/********************************************************************** parse.y - $Author$ created at: Fri May 28 18:02:42 JST 1993 Copyright (C) 1993-2007 Yukihiro Matsumoto **********************************************************************/ %{ #if !YYPURE # error needs pure parser #endif #ifndef PARSER_DEBUG #define PARSER_DEBUG 0 #endif #define YYDEBUG 1 #define YYERROR_VERBOSE 1 #define YYSTACK_USE_ALLOCA 0 #include "ruby/ruby.h" #include "ruby/st.h" #include "ruby/encoding.h" #include "internal.h" #include "node.h" #include "parse.h" #include "symbol.h" #include "regenc.h" #include #include #include #include "probes.h" #ifndef WARN_PAST_SCOPE # define WARN_PAST_SCOPE 0 #endif #define TAB_WIDTH 8 #define YYMALLOC(size) rb_parser_malloc(parser, (size)) #define YYREALLOC(ptr, size) rb_parser_realloc(parser, (ptr), (size)) #define YYCALLOC(nelem, size) rb_parser_calloc(parser, (nelem), (size)) #define YYFREE(ptr) rb_parser_free(parser, (ptr)) #define YYFPRINTF rb_parser_printf #define YYLLOC_DEFAULT(Current, Rhs, N) \ do \ if (N) \ { \ (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ } \ else \ { \ (Current).first_line = (Current).last_line = \ ruby_sourceline; \ (Current).first_column = (Current).last_column = \ (int)(parser->tokp - lex_pbeg); \ } \ while (0) #if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL # define YY_LOCATION_PRINT(File, Loc) \ rb_parser_printf(parser, "%d.%d-%d.%d", \ (Loc).first_line, (Loc).first_column, \ (Loc).last_line, (Loc).last_column) #endif #undef malloc #undef realloc #undef calloc #undef free #define malloc YYMALLOC #define realloc YYREALLOC #define calloc YYCALLOC #define free YYFREE enum lex_state_bits { EXPR_BEG_bit, /* ignore newline, +/- is a sign. */ EXPR_END_bit, /* newline significant, +/- is an operator. */ EXPR_ENDARG_bit, /* ditto, and unbound braces. */ EXPR_ENDFN_bit, /* ditto, and unbound braces. */ EXPR_ARG_bit, /* newline significant, +/- is an operator. */ EXPR_CMDARG_bit, /* newline significant, +/- is an operator. */ EXPR_MID_bit, /* newline significant, +/- is an operator. */ EXPR_FNAME_bit, /* ignore newline, no reserved words. */ EXPR_DOT_bit, /* right after `.' or `::', no reserved words. */ EXPR_CLASS_bit, /* immediate after `class', no here document. */ EXPR_LABEL_bit, /* flag bit, label is allowed. */ EXPR_LABELED_bit, /* flag bit, just after a label. */ EXPR_FITEM_bit, /* symbol literal as FNAME. */ EXPR_MAX_STATE }; /* examine combinations */ enum lex_state_e { #define DEF_EXPR(n) EXPR_##n = (1 << EXPR_##n##_bit) DEF_EXPR(BEG), DEF_EXPR(END), DEF_EXPR(ENDARG), DEF_EXPR(ENDFN), DEF_EXPR(ARG), DEF_EXPR(CMDARG), DEF_EXPR(MID), DEF_EXPR(FNAME), DEF_EXPR(DOT), DEF_EXPR(CLASS), DEF_EXPR(LABEL), DEF_EXPR(LABELED), DEF_EXPR(FITEM), EXPR_VALUE = EXPR_BEG, EXPR_BEG_ANY = (EXPR_BEG | EXPR_MID | EXPR_CLASS), EXPR_ARG_ANY = (EXPR_ARG | EXPR_CMDARG), EXPR_END_ANY = (EXPR_END | EXPR_ENDARG | EXPR_ENDFN) }; #define IS_lex_state_for(x, ls) ((x) & (ls)) #define IS_lex_state_all_for(x, ls) (((x) & (ls)) == (ls)) #define IS_lex_state(ls) IS_lex_state_for(lex_state, (ls)) #define IS_lex_state_all(ls) IS_lex_state_all_for(lex_state, (ls)) # define SET_LEX_STATE(ls) \ (lex_state = \ (yydebug ? \ rb_parser_trace_lex_state(parser, lex_state, (ls), __LINE__) : \ (enum lex_state_e)(ls))) typedef VALUE stack_type; # define SHOW_BITSTACK(stack, name) (yydebug ? rb_parser_show_bitstack(parser, stack, name, __LINE__) : (void)0) # define BITSTACK_PUSH(stack, n) (((stack) = ((stack)<<1)|((n)&1)), SHOW_BITSTACK(stack, #stack"(push)")) # define BITSTACK_POP(stack) (((stack) = (stack) >> 1), SHOW_BITSTACK(stack, #stack"(pop)")) # define BITSTACK_LEXPOP(stack) (((stack) = ((stack) >> 1) | ((stack) & 1)), SHOW_BITSTACK(stack, #stack"(lexpop)")) # define BITSTACK_SET_P(stack) (SHOW_BITSTACK(stack, #stack), (stack)&1) # define BITSTACK_SET(stack, n) ((stack)=(n), SHOW_BITSTACK(stack, #stack"(set)")) #define COND_PUSH(n) BITSTACK_PUSH(cond_stack, (n)) #define COND_POP() BITSTACK_POP(cond_stack) #define COND_LEXPOP() BITSTACK_LEXPOP(cond_stack) #define COND_P() BITSTACK_SET_P(cond_stack) #define COND_SET(n) BITSTACK_SET(cond_stack, (n)) #define CMDARG_PUSH(n) BITSTACK_PUSH(cmdarg_stack, (n)) #define CMDARG_POP() BITSTACK_POP(cmdarg_stack) #define CMDARG_LEXPOP() BITSTACK_LEXPOP(cmdarg_stack) #define CMDARG_P() BITSTACK_SET_P(cmdarg_stack) #define CMDARG_SET(n) BITSTACK_SET(cmdarg_stack, (n)) struct vtable { ID *tbl; int pos; int capa; struct vtable *prev; }; struct local_vars { struct vtable *args; struct vtable *vars; struct vtable *used; # if WARN_PAST_SCOPE struct vtable *past; # endif struct local_vars *prev; stack_type cmdargs; }; #define DVARS_INHERIT ((void*)1) #define DVARS_TOPSCOPE NULL #define DVARS_SPECIAL_P(tbl) (!POINTER_P(tbl)) #define POINTER_P(val) ((VALUE)(val) & ~(VALUE)3) typedef struct token_info { const char *token; int linenum; int column; int nonspc; struct token_info *next; } token_info; typedef struct rb_strterm_struct rb_strterm_t; /* Structure of Lexer Buffer: lex_pbeg tokp lex_p lex_pend | | | | |-----------+--------------+------------| |<------------>| token */ struct parser_params { rb_imemo_alloc_t *heap; YYSTYPE *lval; struct { rb_strterm_t *strterm; VALUE (*gets)(struct parser_params*,VALUE); VALUE input; VALUE lastline; VALUE nextline; const char *pbeg; const char *pcur; const char *pend; const char *ptok; long gets_ptr; enum lex_state_e state; int paren_nest; int lpar_beg; int brace_nest; } lex; stack_type cond_stack; stack_type cmdarg_stack; int tokidx; int toksiz; int tokline; int heredoc_end; int heredoc_indent; int heredoc_line_indent; char *tokenbuf; struct local_vars *lvtbl; int line_count; int ruby_sourceline; /* current line no. */ char *ruby_sourcefile; /* current source file */ VALUE ruby_sourcefile_string; rb_encoding *enc; token_info *token_info; VALUE compile_option; VALUE debug_buffer; VALUE debug_output; ID cur_arg; rb_ast_t *ast; unsigned int command_start:1; unsigned int eofp: 1; unsigned int ruby__end__seen: 1; unsigned int yydebug: 1; unsigned int has_shebang: 1; unsigned int in_defined: 1; unsigned int in_main: 1; unsigned int in_kwarg: 1; unsigned int in_single: 1; unsigned int in_def: 1; unsigned int token_seen: 1; unsigned int token_info_enabled: 1; # if WARN_PAST_SCOPE unsigned int past_scope_enabled: 1; # endif unsigned int error_p: 1; unsigned int cr_seen: 1; #ifndef RIPPER /* Ruby core only */ unsigned int do_print: 1; unsigned int do_loop: 1; unsigned int do_chomp: 1; unsigned int do_split: 1; NODE *eval_tree_begin; NODE *eval_tree; VALUE error_buffer; VALUE debug_lines; VALUE coverage; const struct rb_block *base_block; #else /* Ripper only */ VALUE delayed; int delayed_line; int delayed_col; VALUE value; VALUE result; VALUE parsing_thread; #endif }; #define intern_cstr(n,l,en) rb_intern3(n,l,en) #define STR_NEW(p,n) rb_enc_str_new((p),(n),current_enc) #define STR_NEW0() rb_enc_str_new(0,0,current_enc) #define STR_NEW2(p) rb_enc_str_new((p),strlen(p),current_enc) #define STR_NEW3(p,n,e,func) parser_str_new((p),(n),(e),(func),current_enc) #define TOK_INTERN() intern_cstr(tok(), toklen(), current_enc) static int parser_yyerror(struct parser_params*, const char*); #define yyerror0(msg) parser_yyerror(parser, (msg)) #define yyerror(yylloc, parser, msg) yyerror0(msg) #define token_flush(p) ((p)->lex.ptok = (p)->lex.pcur) #define lex_strterm (parser->lex.strterm) #define lex_state (parser->lex.state) #define cond_stack (parser->cond_stack) #define cmdarg_stack (parser->cmdarg_stack) #define paren_nest (parser->lex.paren_nest) #define lpar_beg (parser->lex.lpar_beg) #define brace_nest (parser->lex.brace_nest) #define in_single (parser->in_single) #define in_def (parser->in_def) #define in_main (parser->in_main) #define in_defined (parser->in_defined) #define tokenbuf (parser->tokenbuf) #define tokidx (parser->tokidx) #define toksiz (parser->toksiz) #define tokline (parser->tokline) #define lex_input (parser->lex.input) #define lex_lastline (parser->lex.lastline) #define lex_nextline (parser->lex.nextline) #define lex_pbeg (parser->lex.pbeg) #define lex_p (parser->lex.pcur) #define lex_pend (parser->lex.pend) #define heredoc_end (parser->heredoc_end) #define heredoc_indent (parser->heredoc_indent) #define heredoc_line_indent (parser->heredoc_line_indent) #define command_start (parser->command_start) #define lex_gets_ptr (parser->lex.gets_ptr) #define lex_gets (parser->lex.gets) #define lvtbl (parser->lvtbl) #define ruby__end__seen (parser->ruby__end__seen) #define ruby_sourceline (parser->ruby_sourceline) #define ruby_sourcefile (parser->ruby_sourcefile) #define ruby_sourcefile_string (parser->ruby_sourcefile_string) #define current_enc (parser->enc) #define current_arg (parser->cur_arg) #define yydebug (parser->yydebug) #ifdef RIPPER #define compile_for_eval (0) #else #define compile_for_eval (parser->base_block != 0 && !in_main) #define ruby_eval_tree (parser->eval_tree) #define ruby_eval_tree_begin (parser->eval_tree_begin) #define ruby_debug_lines (parser->debug_lines) #define ruby_coverage (parser->coverage) #endif #define tokp lex.ptok #define token_column ((int)(parser->tokp - lex_pbeg)) #define CALL_Q_P(q) ((q) == TOKEN2VAL(tANDDOT)) #define NODE_CALL_Q(q) (CALL_Q_P(q) ? NODE_QCALL : NODE_CALL) #define NEW_QCALL(q,r,m,a) NEW_NODE(NODE_CALL_Q(q),r,m,a) #define lambda_beginning_p() (lpar_beg && lpar_beg == paren_nest) static enum yytokentype yylex(YYSTYPE*, YYLTYPE*, struct parser_params*); #ifndef RIPPER static inline void rb_discard_node_gen(struct parser_params *parser, NODE *n) { rb_ast_delete_node(parser->ast, n); } #define rb_discard_node(n) rb_discard_node_gen(parser, (n)) #endif static inline void add_mark_object_gen(struct parser_params *parser, VALUE obj) { if (!SPECIAL_CONST_P(obj) #ifdef RIPPER && !RB_TYPE_P(obj, T_NODE) /* Ripper jumbles NODE objects and other objects... */ #endif ) { rb_ast_add_mark_object(parser->ast, obj); } } #define add_mark_object(obj) add_mark_object_gen(parser, (obj)) static NODE* node_newnode(struct parser_params *, enum node_type, VALUE, VALUE, VALUE); #define rb_node_newnode(type, a1, a2, a3) node_newnode(parser, (type), (a1), (a2), (a3)) #ifndef RIPPER static inline void set_line_body(NODE *body, int line) { if (!body) return; switch (nd_type(body)) { case NODE_RESCUE: case NODE_ENSURE: nd_set_line(body, line); } } #define yyparse ruby_yyparse static NODE *cond_gen(struct parser_params*,NODE*,int,YYLTYPE*); #define cond(node,location) cond_gen(parser, (node), FALSE, location) #define method_cond(node,location) cond_gen(parser, (node), TRUE, location) #define new_nil() NEW_NIL() static NODE *new_if_gen(struct parser_params*,NODE*,NODE*,NODE*,YYLTYPE*); #define new_if(cc,left,right,location) new_if_gen(parser, (cc), (left), (right), (location)) static NODE *new_unless_gen(struct parser_params*,NODE*,NODE*,NODE*,YYLTYPE*); #define new_unless(cc,left,right,location) new_unless_gen(parser, (cc), (left), (right), (location)) static NODE *logop_gen(struct parser_params*,enum node_type,NODE*,NODE*,YYLTYPE*); #define logop(id,node1,node2,location) \ logop_gen(parser, ((id)==idAND||(id)==idANDOP)?NODE_AND:NODE_OR, \ (node1), (node2), (location)) static NODE *newline_node(NODE*); static void fixpos(NODE*,NODE*); static int value_expr_gen(struct parser_params*,NODE*); static void void_expr_gen(struct parser_params*,NODE*); static NODE *remove_begin(NODE*); static NODE *remove_begin_all(NODE*); #define value_expr(node) value_expr_gen(parser, (node) = remove_begin(node)) #define void_expr0(node) void_expr_gen(parser, (node)) #define void_expr(node) void_expr0((node) = remove_begin(node)) static void void_stmts_gen(struct parser_params*,NODE*); #define void_stmts(node) void_stmts_gen(parser, (node)) static void reduce_nodes_gen(struct parser_params*,NODE**); #define reduce_nodes(n) reduce_nodes_gen(parser,(n)) static void block_dup_check_gen(struct parser_params*,NODE*,NODE*); #define block_dup_check(n1,n2) block_dup_check_gen(parser,(n1),(n2)) static NODE *block_append_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define block_append(h,t,location) block_append_gen(parser,(h),(t),(location)) static NODE *list_append_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define list_append(l,i,location) list_append_gen(parser,(l),(i),(location)) static NODE *list_concat(NODE*,NODE*); static NODE *arg_append_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define arg_append(h,t,location) arg_append_gen(parser,(h),(t),(location)) static NODE *arg_concat_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define arg_concat(h,t,location) arg_concat_gen(parser,(h),(t),(location)) static NODE *literal_concat_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define literal_concat(h,t,location) literal_concat_gen(parser,(h),(t),(location)) static int literal_concat0(struct parser_params *, VALUE, VALUE); static NODE *new_evstr_gen(struct parser_params*,NODE*,YYLTYPE*); #define new_evstr(n, location) new_evstr_gen(parser,(n),(location)) static NODE *evstr2dstr_gen(struct parser_params*,NODE*,YYLTYPE*); #define evstr2dstr(n,location) evstr2dstr_gen(parser,(n),(location)) static NODE *splat_array(NODE*); static NODE *call_bin_op_gen(struct parser_params*,NODE*,ID,NODE*,YYLTYPE*); #define call_bin_op(recv,id,arg1,location) call_bin_op_gen(parser, (recv),(id),(arg1),(location)) static NODE *call_uni_op_gen(struct parser_params*,NODE*,ID,YYLTYPE*); #define call_uni_op(recv,id,location) call_uni_op_gen(parser, (recv),(id),(location)) static NODE *new_qcall_gen(struct parser_params* parser, ID atype, NODE *recv, ID mid, NODE *args, YYLTYPE *location); #define new_qcall(q,r,m,a,location) new_qcall_gen(parser,q,r,m,a,location) #define new_command_qcall(q,r,m,a,location) new_qcall_gen(parser,q,r,m,a,location) static NODE *new_command_gen(struct parser_params*parser, NODE *m, NODE *a) {m->nd_args = a; return m;} #define new_command(m,a) new_command_gen(parser, m, a) static NODE *method_add_block_gen(struct parser_params*parser, NODE *m, NODE *b) {b->nd_iter = m; return b;} #define method_add_block(m,b) method_add_block_gen(parser, m, b) static NODE *new_args_gen(struct parser_params*,NODE*,NODE*,ID,NODE*,NODE*); #define new_args(f,o,r,p,t) new_args_gen(parser, (f),(o),(r),(p),(t)) static NODE *new_args_tail_gen(struct parser_params*,NODE*,ID,ID,YYLTYPE*); #define new_args_tail(k,kr,b,location) new_args_tail_gen(parser, (k),(kr),(b),(location)) static NODE *new_kw_arg_gen(struct parser_params *parser, NODE *k, YYLTYPE *location); #define new_kw_arg(k,location) new_kw_arg_gen(parser, k, location) static VALUE negate_lit_gen(struct parser_params*, VALUE); #define negate_lit(lit) negate_lit_gen(parser, lit) static NODE *ret_args_gen(struct parser_params*,NODE*); #define ret_args(node) ret_args_gen(parser, (node)) static NODE *arg_blk_pass(NODE*,NODE*); static NODE *new_yield_gen(struct parser_params*,NODE*,YYLTYPE*); #define new_yield(node,location) new_yield_gen(parser, (node), (location)) static NODE *dsym_node_gen(struct parser_params*,NODE*,YYLTYPE*); #define dsym_node(node,location) dsym_node_gen(parser, (node), (location)) static NODE *gettable_gen(struct parser_params*,ID,YYLTYPE*); #define gettable(id,location) gettable_gen(parser,(id),(location)) static NODE *assignable_gen(struct parser_params*,ID,NODE*,YYLTYPE*); #define assignable(id,node,location) assignable_gen(parser, (id), (node), (location)) static NODE *aryset_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define aryset(node1,node2,location) aryset_gen(parser, (node1), (node2), (location)) static NODE *attrset_gen(struct parser_params*,NODE*,ID,ID,YYLTYPE*); #define attrset(node,q,id,location) attrset_gen(parser, (node), (q), (id), (location)) static void rb_backref_error_gen(struct parser_params*,NODE*); #define rb_backref_error(n) rb_backref_error_gen(parser,(n)) static NODE *node_assign_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define node_assign(node1, node2, location) node_assign_gen(parser, (node1), (node2), (location)) static NODE *new_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs, YYLTYPE *location); #define new_op_assign(lhs, op, rhs, location) new_op_assign_gen(parser, (lhs), (op), (rhs), (location)) static NODE *new_attr_op_assign_gen(struct parser_params *parser, NODE *lhs, ID atype, ID attr, ID op, NODE *rhs, YYLTYPE *location); #define new_attr_op_assign(lhs, type, attr, op, rhs, location) new_attr_op_assign_gen(parser, (lhs), (type), (attr), (op), (rhs), (location)) static NODE *new_const_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs, YYLTYPE *location); #define new_const_op_assign(lhs, op, rhs, location) new_const_op_assign_gen(parser, (lhs), (op), (rhs), (location)) static NODE *const_path_field_gen(struct parser_params *parser, NODE *head, ID mid, YYLTYPE *location); #define const_path_field(w, n, location) const_path_field_gen(parser, w, n, location) #define top_const_field(n) NEW_COLON3(n) static NODE *const_decl_gen(struct parser_params *parser, NODE* path, YYLTYPE *location); #define const_decl(path, location) const_decl_gen(parser, path, location) #define var_field(n) (n) #define backref_assign_error(n, a, location) (rb_backref_error(n), new_begin(0, location)) static NODE *kwd_append(NODE*, NODE*); static NODE *new_hash_gen(struct parser_params *parser, NODE *hash, YYLTYPE *location); #define new_hash(hash, location) new_hash_gen(parser, (hash), location) static NODE *new_defined_gen(struct parser_params *parser, NODE *expr, YYLTYPE *location); #define new_defined(expr, location) new_defined_gen(parser, expr, location) static NODE *new_regexp_gen(struct parser_params *, NODE *, int, YYLTYPE *); #define new_regexp(node, opt, location) new_regexp_gen(parser, node, opt, location) static NODE *new_lit_gen(struct parser_params *parser, VALUE sym, YYLTYPE *location); #define new_lit(sym, location) new_lit_gen(parser, sym, location) static NODE *new_list_gen(struct parser_params *parser, NODE *item, YYLTYPE *location); #define new_list(item, location) new_list_gen(parser, item, location) static NODE *new_str_gen(struct parser_params *parser, VALUE str, YYLTYPE *location); #define new_str(s,location) new_str_gen(parser, s, location) static NODE *new_dvar_gen(struct parser_params *parser, ID id, YYLTYPE *location); #define new_dvar(id, location) new_dvar_gen(parser, id, location) static NODE *new_resbody_gen(struct parser_params *parser, NODE *exc_list, NODE *stmt, NODE *rescue, YYLTYPE *location); #define new_resbody(e,s,r,location) new_resbody_gen(parser, (e),(s),(r),(location)) static NODE *new_errinfo_gen(struct parser_params *parser, YYLTYPE *location); #define new_errinfo(location) new_errinfo_gen(parser, location) static NODE *new_call_gen(struct parser_params *parser, NODE *recv, ID mid, NODE *args, YYLTYPE *location); #define new_call(recv,mid,args,location) new_call_gen(parser, recv,mid,args,location) static NODE *new_fcall_gen(struct parser_params *parser, ID mid, NODE *args, YYLTYPE *location); #define new_fcall(mid,args,location) new_fcall_gen(parser, mid, args, location) static NODE *new_for_gen(struct parser_params *parser, NODE *var, NODE *iter, NODE *body, YYLTYPE *location); #define new_for(var,iter,body,location) new_for_gen(parser, var, iter, body, location) static NODE *new_gvar_gen(struct parser_params *parser, ID id, YYLTYPE *location); #define new_gvar(id, location) new_gvar_gen(parser, id, location) static NODE *new_lvar_gen(struct parser_params *parser, ID id, YYLTYPE *location); #define new_lvar(id, location) new_lvar_gen(parser, id, location) static NODE *new_dstr_gen(struct parser_params *parser, VALUE str, YYLTYPE *location); #define new_dstr(s, location) new_dstr_gen(parser, s, location) static NODE *new_rescue_gen(struct parser_params *parser, NODE *b, NODE *res, NODE *e, YYLTYPE *location); #define new_rescue(b,res,e,location) new_rescue_gen(parser,b,res,e,location) static NODE *new_undef_gen(struct parser_params *parser, NODE *i, YYLTYPE *location); #define new_undef(i, location) new_undef_gen(parser, i, location) static NODE *new_zarray_gen(struct parser_params *parser, YYLTYPE *location); #define new_zarray(location) new_zarray_gen(parser, location) static NODE *new_ivar_gen(struct parser_params *parser, ID id, YYLTYPE *location); #define new_ivar(id, location) new_ivar_gen(parser,id,location) static NODE *new_postarg_gen(struct parser_params *parser, NODE *i, NODE *v, YYLTYPE *location); #define new_postarg(i,v,location) new_postarg_gen(parser,i,v,location) static NODE *new_cdecl_gen(struct parser_params *parser, ID v, NODE *val, NODE *path, YYLTYPE *location); #define new_cdecl(v,val,path,location) new_cdecl_gen(parser,v,val,path,location) static NODE *new_scope_gen(struct parser_params *parser, NODE *a, NODE *b, YYLTYPE *location); #define new_scope(a,b,location) new_scope_gen(parser,a,b,location) static NODE *new_begin_gen(struct parser_params *parser, NODE *b, YYLTYPE *location); #define new_begin(b,location) new_begin_gen(parser,b,location) static NODE *new_masgn_gen(struct parser_params *parser, NODE *l, NODE *r, YYLTYPE *location); #define new_masgn(l,r,location) new_masgn_gen(parser,l,r,location) static NODE *new_xstring_gen(struct parser_params *, NODE *, YYLTYPE *location); #define new_xstring(node, location) new_xstring_gen(parser, node, location) #define new_string1(str) (str) static NODE *new_body_gen(struct parser_params *parser, NODE *param, NODE *stmt, YYLTYPE *location); #define new_brace_body(param, stmt, location) new_body_gen(parser, param, stmt, location) #define new_do_body(param, stmt, location) new_body_gen(parser, param, stmt, location) static NODE *match_op_gen(struct parser_params*,NODE*,NODE*,YYLTYPE*); #define match_op(node1,node2,location) match_op_gen(parser, (node1), (node2), (location)) static ID *local_tbl_gen(struct parser_params*); #define local_tbl() local_tbl_gen(parser) static VALUE reg_compile_gen(struct parser_params*, VALUE, int); #define reg_compile(str,options) reg_compile_gen(parser, (str), (options)) static void reg_fragment_setenc_gen(struct parser_params*, VALUE, int); #define reg_fragment_setenc(str,options) reg_fragment_setenc_gen(parser, (str), (options)) static int reg_fragment_check_gen(struct parser_params*, VALUE, int); #define reg_fragment_check(str,options) reg_fragment_check_gen(parser, (str), (options)) static NODE *reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp, YYLTYPE *location); #define reg_named_capture_assign(regexp,location) reg_named_capture_assign_gen(parser,(regexp),location) static NODE *parser_heredoc_dedent(struct parser_params*,NODE*); # define heredoc_dedent(str) parser_heredoc_dedent(parser, (str)) #define get_id(id) (id) #define get_value(val) (val) #else /* RIPPER */ #define NODE_RIPPER NODE_CDECL static inline VALUE ripper_new_yylval_gen(struct parser_params *parser, ID a, VALUE b, VALUE c) { add_mark_object(b); add_mark_object(c); return (VALUE)NEW_CDECL(a, b, c); } #define ripper_new_yylval(a, b, c) ripper_new_yylval_gen(parser, a, b, c) static inline int ripper_is_node_yylval(VALUE n) { return RB_TYPE_P(n, T_NODE) && nd_type(RNODE(n)) == NODE_RIPPER; } #define value_expr(node) ((void)(node)) #define remove_begin(node) (node) #define rb_dvar_defined(id, base) 0 #define rb_local_defined(id, base) 0 static ID ripper_get_id(VALUE); #define get_id(id) ripper_get_id(id) static VALUE ripper_get_value(VALUE); #define get_value(val) ripper_get_value(val) static VALUE assignable_gen(struct parser_params*,VALUE); #define assignable(lhs,node,location) assignable_gen(parser, (lhs)) static int id_is_var_gen(struct parser_params *parser, ID id); #define id_is_var(id) id_is_var_gen(parser, (id)) #define method_cond(node,location) (node) #define call_bin_op(recv,id,arg1,location) dispatch3(binary, (recv), STATIC_ID2SYM(id), (arg1)) #define match_op(node1,node2,location) call_bin_op((node1), idEqTilde, (node2), location) #define call_uni_op(recv,id,location) dispatch2(unary, STATIC_ID2SYM(id), (recv)) #define logop(id,node1,node2,location) call_bin_op((node1), (id), (node2), location) #define node_assign(node1, node2, location) dispatch2(assign, (node1), (node2)) static VALUE new_qcall_gen(struct parser_params *parser, VALUE q, VALUE r, VALUE m, VALUE a); #define new_qcall(q,r,m,a,location) new_qcall_gen(parser, (r), (q), (m), (a)) #define new_command_qcall(q,r,m,a,location) dispatch4(command_call, (r), (q), (m), (a)) #define new_command_call(q,r,m,a) dispatch4(command_call, (r), (q), (m), (a)) #define new_command(m,a) dispatch2(command, (m), (a)); #define new_nil() Qnil static VALUE new_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE op, VALUE rhs); #define new_op_assign(lhs, op, rhs, location) new_op_assign_gen(parser, (lhs), (op), (rhs)) static VALUE new_attr_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE type, VALUE attr, VALUE op, VALUE rhs); #define new_attr_op_assign(lhs, type, attr, op, rhs, location) new_attr_op_assign_gen(parser, (lhs), (type), (attr), (op), (rhs)) #define new_const_op_assign(lhs, op, rhs, location) new_op_assign(lhs, op, rhs, location) static VALUE new_regexp_gen(struct parser_params *, VALUE, VALUE); #define new_regexp(node, opt, location) new_regexp_gen(parser, node, opt) static VALUE new_xstring_gen(struct parser_params *, VALUE); #define new_xstring(str, location) new_xstring_gen(parser, str) #define new_string1(str) dispatch1(string_literal, str) #define new_brace_body(param, stmt, location) dispatch2(brace_block, escape_Qundef(param), stmt) #define new_do_body(param, stmt, location) dispatch2(do_block, escape_Qundef(param), stmt) #define const_path_field(w, n, location) dispatch2(const_path_field, (w), (n)) #define top_const_field(n) dispatch1(top_const_field, (n)) static VALUE const_decl_gen(struct parser_params *parser, VALUE path); #define const_decl(path, location) const_decl_gen(parser, path) static VALUE var_field_gen(struct parser_params *parser, VALUE a); #define var_field(a) var_field_gen(parser, (a)) static VALUE assign_error_gen(struct parser_params *parser, VALUE a); #define assign_error(a) assign_error_gen(parser, (a)) #define backref_assign_error(n, a, location) assign_error(a) #define block_dup_check(n1,n2) ((void)(n1), (void)(n2)) #define fixpos(n1,n2) ((void)(n1), (void)(n2)) #undef nd_set_line #define nd_set_line(n,l) ((void)(n)) static VALUE parser_reg_compile(struct parser_params*, VALUE, int, VALUE *); #endif /* !RIPPER */ RUBY_SYMBOL_EXPORT_BEGIN VALUE rb_parser_reg_compile(struct parser_params* parser, VALUE str, int options); int rb_reg_fragment_setenc(struct parser_params*, VALUE, int); enum lex_state_e rb_parser_trace_lex_state(struct parser_params *, enum lex_state_e, enum lex_state_e, int); VALUE rb_parser_lex_state_name(enum lex_state_e state); void rb_parser_show_bitstack(struct parser_params *, stack_type, const char *, int); PRINTF_ARGS(void rb_parser_fatal(struct parser_params *parser, const char *fmt, ...), 2, 3); RUBY_SYMBOL_EXPORT_END static ID formal_argument_gen(struct parser_params*, ID); #define formal_argument(id) formal_argument_gen(parser, (id)) static ID shadowing_lvar_gen(struct parser_params*,ID); #define shadowing_lvar(name) shadowing_lvar_gen(parser, (name)) static void new_bv_gen(struct parser_params*,ID); #define new_bv(id) new_bv_gen(parser, (id)) static void local_push_gen(struct parser_params*,int); #define local_push(top) local_push_gen(parser,(top)) static void local_pop_gen(struct parser_params*); #define local_pop() local_pop_gen(parser) static void local_var_gen(struct parser_params*, ID); #define local_var(id) local_var_gen(parser, (id)) static void arg_var_gen(struct parser_params*, ID); #define arg_var(id) arg_var_gen(parser, (id)) static int local_id_gen(struct parser_params*, ID, ID **); #define local_id_ref(id, vidp) local_id_gen(parser, (id), &(vidp)) #define local_id(id) local_id_gen(parser, (id), NULL) static ID internal_id_gen(struct parser_params*); #define internal_id() internal_id_gen(parser) static const struct vtable *dyna_push_gen(struct parser_params *); #define dyna_push() dyna_push_gen(parser) static void dyna_pop_gen(struct parser_params*, const struct vtable *); #define dyna_pop(node) dyna_pop_gen(parser, (node)) static int dyna_in_block_gen(struct parser_params*); #define dyna_in_block() dyna_in_block_gen(parser) #define dyna_var(id) local_var(id) static int dvar_defined_gen(struct parser_params*, ID, ID**); #define dvar_defined_ref(id, vidp) dvar_defined_gen(parser, (id), &(vidp)) #define dvar_defined(id) dvar_defined_gen(parser, (id), NULL) static int dvar_curr_gen(struct parser_params*,ID); #define dvar_curr(id) dvar_curr_gen(parser, (id)) static int lvar_defined_gen(struct parser_params*, ID); #define lvar_defined(id) lvar_defined_gen(parser, (id)) #ifdef RIPPER # define METHOD_NOT idNOT #else # define METHOD_NOT '!' #endif #define RE_OPTION_ONCE (1<<16) #define RE_OPTION_ENCODING_SHIFT 8 #define RE_OPTION_ENCODING(e) (((e)&0xff)<>RE_OPTION_ENCODING_SHIFT)&0xff) #define RE_OPTION_ENCODING_NONE(o) ((o)&RE_OPTION_ARG_ENCODING_NONE) #define RE_OPTION_MASK 0xff #define RE_OPTION_ARG_ENCODING_NONE 32 /* structs for managing terminator of string literal and heredocment */ typedef struct rb_strterm_literal_struct { union { VALUE dummy; long nest; } u0; union { VALUE dummy; long func; /* STR_FUNC_* (e.g., STR_FUNC_ESCAPE and STR_FUNC_EXPAND) */ } u1; union { VALUE dummy; long paren; /* '(' of `%q(...)` */ } u2; union { VALUE dummy; long term; /* ')' of `%q(...)` */ } u3; } rb_strterm_literal_t; typedef struct rb_strterm_heredoc_struct { union { VALUE dummy; int sourceline; } u1; VALUE term; /* `"END"` of `<<"END"` */ VALUE lastline; /* the string of line that contains `<<"END"` */ union { VALUE dummy; long lastidx; /* the column of `<<"END"` */ } u3; } rb_strterm_heredoc_t; #define STRTERM_HEREDOC IMEMO_FL_USER0 struct rb_strterm_struct { VALUE flags; union { rb_strterm_literal_t literal; rb_strterm_heredoc_t heredoc; } u; }; #ifndef RIPPER void rb_strterm_mark(VALUE obj) { rb_strterm_t *strterm = (rb_strterm_t*)obj; if (RBASIC(obj)->flags & STRTERM_HEREDOC) { rb_strterm_heredoc_t *heredoc = &strterm->u.heredoc; rb_gc_mark(heredoc->term); rb_gc_mark(heredoc->lastline); } } #endif #define TOKEN2ID(tok) ( \ tTOKEN_LOCAL_BEGIN<(tok)&&(tok)=128 || rb_ispunct(tok))))) /****** Ripper *******/ #ifdef RIPPER #define RIPPER_VERSION "0.1.0" static inline VALUE intern_sym(const char *name); #include "eventids1.c" #include "eventids2.c" static VALUE ripper_dispatch0(struct parser_params*,ID); static VALUE ripper_dispatch1(struct parser_params*,ID,VALUE); static VALUE ripper_dispatch2(struct parser_params*,ID,VALUE,VALUE); static VALUE ripper_dispatch3(struct parser_params*,ID,VALUE,VALUE,VALUE); static VALUE ripper_dispatch4(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE); static VALUE ripper_dispatch5(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE); static VALUE ripper_dispatch7(struct parser_params*,ID,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE,VALUE); static void ripper_error_gen(struct parser_params *parser); #define ripper_error() ripper_error_gen(parser) #define dispatch0(n) ripper_dispatch0(parser, TOKEN_PASTE(ripper_id_, n)) #define dispatch1(n,a) ripper_dispatch1(parser, TOKEN_PASTE(ripper_id_, n), (a)) #define dispatch2(n,a,b) ripper_dispatch2(parser, TOKEN_PASTE(ripper_id_, n), (a), (b)) #define dispatch3(n,a,b,c) ripper_dispatch3(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c)) #define dispatch4(n,a,b,c,d) ripper_dispatch4(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d)) #define dispatch5(n,a,b,c,d,e) ripper_dispatch5(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e)) #define dispatch7(n,a,b,c,d,e,f,g) ripper_dispatch7(parser, TOKEN_PASTE(ripper_id_, n), (a), (b), (c), (d), (e), (f), (g)) #define yyparse ripper_yyparse #define ID2VAL(id) STATIC_ID2SYM(id) #define TOKEN2VAL(t) ID2VAL(TOKEN2ID(t)) #define KWD2EID(t, v) ripper_new_yylval(keyword_##t, get_value(v), 0) #define arg_new() dispatch0(args_new) #define arg_add(l,a) dispatch2(args_add, (l), (a)) #define arg_add_star(l,a) dispatch2(args_add_star, (l), (a)) #define arg_add_block(l,b) dispatch2(args_add_block, (l), (b)) #define arg_add_optblock(l,b) ((b)==Qundef? (l) : dispatch2(args_add_block, (l), (b))) #define bare_assoc(v) dispatch1(bare_assoc_hash, (v)) #define arg_add_assocs(l,b) arg_add((l), bare_assoc(b)) #define args2mrhs(a) dispatch1(mrhs_new_from_args, (a)) #define mrhs_new() dispatch0(mrhs_new) #define mrhs_add(l,a) dispatch2(mrhs_add, (l), (a)) #define mrhs_add_star(l,a) dispatch2(mrhs_add_star, (l), (a)) #define mlhs_new() dispatch0(mlhs_new) #define mlhs_add(l,a) dispatch2(mlhs_add, (l), (a)) #define mlhs_add_star(l,a) dispatch2(mlhs_add_star, (l), (a)) #define mlhs_add_post(l,a) dispatch2(mlhs_add_post, (l), (a)) #define params_new(pars, opts, rest, pars2, kws, kwrest, blk) \ dispatch7(params, (pars), (opts), (rest), (pars2), (kws), (kwrest), (blk)) #define blockvar_new(p,v) dispatch2(block_var, (p), (v)) #define method_optarg(m,a) ((a)==Qundef ? (m) : dispatch2(method_add_arg,(m),(a))) #define method_arg(m,a) dispatch2(method_add_arg,(m),(a)) #define method_add_block(m,b) dispatch2(method_add_block, (m), (b)) #define escape_Qundef(x) ((x)==Qundef ? Qnil : (x)) static inline VALUE new_args_gen(struct parser_params *parser, VALUE f, VALUE o, VALUE r, VALUE p, VALUE tail) { NODE *t = (NODE *)tail; VALUE k = t->u1.value, kr = t->u2.value, b = t->u3.value; return params_new(f, o, r, p, k, kr, escape_Qundef(b)); } #define new_args(f,o,r,p,t) new_args_gen(parser, (f),(o),(r),(p),(t)) static inline VALUE new_args_tail_gen(struct parser_params *parser, VALUE k, VALUE kr, VALUE b) { NODE *t = rb_node_newnode(NODE_ARGS_AUX, k, kr, b); add_mark_object(k); add_mark_object(kr); add_mark_object(b); return (VALUE)t; } #define new_args_tail(k,kr,b,location) new_args_tail_gen(parser, (k),(kr),(b)) #define new_defined(expr,location) dispatch1(defined, (expr)) static VALUE parser_heredoc_dedent(struct parser_params*,VALUE); # define heredoc_dedent(str) parser_heredoc_dedent(parser, (str)) #define FIXME 0 #else #define ID2VAL(id) ((VALUE)(id)) #define TOKEN2VAL(t) ID2VAL(t) #define KWD2EID(t, v) keyword_##t #endif /* RIPPER */ #ifndef RIPPER # define Qnone 0 # define Qnull 0 # define ifndef_ripper(x) (x) #else # define Qnone Qnil # define Qnull Qundef # define ifndef_ripper(x) #endif # define rb_warn0(fmt) WARN_CALL(WARN_ARGS(fmt, 1)) # define rb_warn1(fmt,a) WARN_CALL(WARN_ARGS(fmt, 2), (a)) # define rb_warn2(fmt,a,b) WARN_CALL(WARN_ARGS(fmt, 3), (a), (b)) # define rb_warn3(fmt,a,b,c) WARN_CALL(WARN_ARGS(fmt, 4), (a), (b), (c)) # define rb_warn4(fmt,a,b,c,d) WARN_CALL(WARN_ARGS(fmt, 5), (a), (b), (c), (d)) # define rb_warning0(fmt) WARNING_CALL(WARNING_ARGS(fmt, 1)) # define rb_warning1(fmt,a) WARNING_CALL(WARNING_ARGS(fmt, 2), (a)) # define rb_warning2(fmt,a,b) WARNING_CALL(WARNING_ARGS(fmt, 3), (a), (b)) # define rb_warning3(fmt,a,b,c) WARNING_CALL(WARNING_ARGS(fmt, 4), (a), (b), (c)) # define rb_warning4(fmt,a,b,c,d) WARNING_CALL(WARNING_ARGS(fmt, 5), (a), (b), (c), (d)) # define rb_warn0L(l,fmt) WARN_CALL(WARN_ARGS_L(l, fmt, 1)) # define rb_warn1L(l,fmt,a) WARN_CALL(WARN_ARGS_L(l, fmt, 2), (a)) # define rb_warn2L(l,fmt,a,b) WARN_CALL(WARN_ARGS_L(l, fmt, 3), (a), (b)) # define rb_warn3L(l,fmt,a,b,c) WARN_CALL(WARN_ARGS_L(l, fmt, 4), (a), (b), (c)) # define rb_warn4L(l,fmt,a,b,c,d) WARN_CALL(WARN_ARGS_L(l, fmt, 5), (a), (b), (c), (d)) # define rb_warning0L(l,fmt) WARNING_CALL(WARNING_ARGS_L(l, fmt, 1)) # define rb_warning1L(l,fmt,a) WARNING_CALL(WARNING_ARGS_L(l, fmt, 2), (a)) # define rb_warning2L(l,fmt,a,b) WARNING_CALL(WARNING_ARGS_L(l, fmt, 3), (a), (b)) # define rb_warning3L(l,fmt,a,b,c) WARNING_CALL(WARNING_ARGS_L(l, fmt, 4), (a), (b), (c)) # define rb_warning4L(l,fmt,a,b,c,d) WARNING_CALL(WARNING_ARGS_L(l, fmt, 5), (a), (b), (c), (d)) #ifdef RIPPER static ID id_warn, id_warning, id_gets; # define WARN_S_L(s,l) STR_NEW(s,l) # define WARN_S(s) STR_NEW2(s) # define WARN_I(i) INT2NUM(i) # define WARN_ID(i) rb_id2str(i) # define PRIsWARN "s" # define WARN_ARGS(fmt,n) parser->value, id_warn, n, rb_usascii_str_new_lit(fmt) # define WARN_ARGS_L(l,fmt,n) WARN_ARGS(fmt,n) # ifdef HAVE_VA_ARGS_MACRO # define WARN_CALL(...) rb_funcall(__VA_ARGS__) # else # define WARN_CALL rb_funcall # endif # define WARNING_ARGS(fmt,n) parser->value, id_warning, n, rb_usascii_str_new_lit(fmt) # define WARNING_ARGS_L(l, fmt,n) WARNING_ARGS(fmt,n) # ifdef HAVE_VA_ARGS_MACRO # define WARNING_CALL(...) rb_funcall(__VA_ARGS__) # else # define WARNING_CALL rb_funcall # endif PRINTF_ARGS(static void ripper_compile_error(struct parser_params*, const char *fmt, ...), 2, 3); # define compile_error ripper_compile_error # define PARSER_ARG parser, #else # define WARN_S_L(s,l) s # define WARN_S(s) s # define WARN_I(i) i # define WARN_ID(i) rb_id2name(i) # define PRIsWARN PRIsVALUE # define WARN_ARGS(fmt,n) WARN_ARGS_L(ruby_sourceline,fmt,n) # define WARN_ARGS_L(l,fmt,n) ruby_sourcefile, (l), (fmt) # define WARN_CALL rb_compile_warn # define WARNING_ARGS(fmt,n) WARN_ARGS(fmt,n) # define WARNING_ARGS_L(l,fmt,n) WARN_ARGS_L(l,fmt,n) # define WARNING_CALL rb_compile_warning PRINTF_ARGS(static void parser_compile_error(struct parser_params*, const char *fmt, ...), 2, 3); # define compile_error parser_compile_error # define PARSER_ARG parser, #endif /* Older versions of Yacc set YYMAXDEPTH to a very low value by default (150, for instance). This is too low for Ruby to parse some files, such as date/format.rb, therefore bump the value up to at least Bison's default. */ #ifdef OLD_YACC #ifndef YYMAXDEPTH #define YYMAXDEPTH 10000 #endif #endif static void token_info_push_gen(struct parser_params*, const char *token, size_t len); static void token_info_pop_gen(struct parser_params*, const char *token, size_t len); #define token_info_push(token) token_info_push_gen(parser, (token), rb_strlen_lit(token)) #define token_info_pop(token) token_info_pop_gen(parser, (token), rb_strlen_lit(token)) %} %pure-parser %lex-param {struct parser_params *parser} %parse-param {struct parser_params *parser} %union { VALUE val; NODE *node; ID id; int num; const struct vtable *vars; struct rb_strterm_struct *strterm; } %token keyword_class keyword_module keyword_def keyword_undef keyword_begin keyword_rescue keyword_ensure keyword_end keyword_if keyword_unless keyword_then keyword_elsif keyword_else keyword_case keyword_when keyword_while keyword_until keyword_for keyword_break keyword_next keyword_redo keyword_retry keyword_in keyword_do keyword_do_cond keyword_do_block keyword_do_LAMBDA keyword_return keyword_yield keyword_super keyword_self keyword_nil keyword_true keyword_false keyword_and keyword_or keyword_not modifier_if modifier_unless modifier_while modifier_until modifier_rescue keyword_alias keyword_defined keyword_BEGIN keyword_END keyword__LINE__ keyword__FILE__ keyword__ENCODING__ %token tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL %token tINTEGER tFLOAT tRATIONAL tIMAGINARY tSTRING_CONTENT tCHAR %token tNTH_REF tBACK_REF %token tREGEXP_END %type singleton strings string string1 xstring regexp %type string_contents xstring_contents regexp_contents string_content %type words symbols symbol_list qwords qsymbols word_list qword_list qsym_list word %type literal numeric simple_numeric dsym cpath %type top_compstmt top_stmts top_stmt %type bodystmt compstmt stmts stmt_or_begin stmt expr arg primary command command_call method_call %type expr_value arg_value primary_value fcall rel_expr %type if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure %type args call_args opt_call_args %type paren_args opt_paren_args args_tail opt_args_tail block_args_tail opt_block_args_tail %type command_args aref_args opt_block_arg block_arg var_ref var_lhs %type command_rhs arg_rhs %type command_asgn mrhs mrhs_arg superclass block_call block_command %type f_block_optarg f_block_opt %type f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs %type assoc_list assocs assoc undef_list backref string_dvar for_var %type block_param opt_block_param block_param_def f_opt %type f_kwarg f_kw f_block_kwarg f_block_kw %type bv_decls opt_bv_decl bvar %type lambda f_larglist lambda_body brace_body do_body %type brace_block cmd_brace_block do_block lhs none fitem %type mlhs mlhs_head mlhs_basic mlhs_item mlhs_node mlhs_post mlhs_inner %type fsym keyword_variable user_variable sym symbol operation operation2 operation3 %type cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg f_bad_arg %type f_kwrest f_label f_arg_asgn call_op call_op2 reswords relop /*%%%*/ /*% %type program then do %*/ %token END_OF_INPUT 0 "end-of-input" %token tUPLUS RUBY_TOKEN(UPLUS) "unary+" %token tUMINUS RUBY_TOKEN(UMINUS) "unary-" %token tPOW RUBY_TOKEN(POW) "**" %token tCMP RUBY_TOKEN(CMP) "<=>" %token tEQ RUBY_TOKEN(EQ) "==" %token tEQQ RUBY_TOKEN(EQQ) "===" %token tNEQ RUBY_TOKEN(NEQ) "!=" %token tGEQ RUBY_TOKEN(GEQ) ">=" %token tLEQ RUBY_TOKEN(LEQ) "<=" %token tANDOP RUBY_TOKEN(ANDOP) "&&" %token tOROP RUBY_TOKEN(OROP) "||" %token tMATCH RUBY_TOKEN(MATCH) "=~" %token tNMATCH RUBY_TOKEN(NMATCH) "!~" %token tDOT2 RUBY_TOKEN(DOT2) ".." %token tDOT3 RUBY_TOKEN(DOT3) "..." %token tAREF RUBY_TOKEN(AREF) "[]" %token tASET RUBY_TOKEN(ASET) "[]=" %token tLSHFT RUBY_TOKEN(LSHFT) "<<" %token tRSHFT RUBY_TOKEN(RSHFT) ">>" %token tANDDOT RUBY_TOKEN(ANDDOT) "&." %token tCOLON2 RUBY_TOKEN(COLON2) "::" %token tCOLON3 ":: at EXPR_BEG" %token tOP_ASGN /* +=, -= etc. */ %token tASSOC "=>" %token tLPAREN "(" %token tLPAREN_ARG "( arg" %token tRPAREN ")" %token tLBRACK "[" %token tLBRACE "{" %token tLBRACE_ARG "{ arg" %token tSTAR "*" %token tDSTAR "**arg" %token tAMPER "&" %token tLAMBDA "->" %token tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG tSYMBOLS_BEG tQSYMBOLS_BEG %token tSTRING_DBEG tSTRING_DEND tSTRING_DVAR tSTRING_END tLAMBEG tLABEL_END /* * precedence table */ %nonassoc tLOWEST %nonassoc tLBRACE_ARG %nonassoc modifier_if modifier_unless modifier_while modifier_until %left keyword_or keyword_and %right keyword_not %nonassoc keyword_defined %right '=' tOP_ASGN %left modifier_rescue %right '?' ':' %nonassoc tDOT2 tDOT3 %left tOROP %left tANDOP %nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH %left '>' tGEQ '<' tLEQ %left '|' '^' %left '&' %left tLSHFT tRSHFT %left '+' '-' %left '*' '/' '%' %right tUMINUS_NUM tUMINUS %right tPOW %right '!' '~' tUPLUS %token tLAST_TOKEN %% program : { SET_LEX_STATE(EXPR_BEG); /*%%%*/ local_push(compile_for_eval || in_main); /*% local_push(0); %*/ } top_compstmt { /*%%%*/ if ($2 && !compile_for_eval) { /* last expression should not be void */ if (nd_type($2) != NODE_BLOCK) void_expr($2); else { NODE *node = $2; while (node->nd_next) { node = node->nd_next; } void_expr(node->nd_head); } } ruby_eval_tree = new_scope(0, block_append(ruby_eval_tree, $2, &@1), &@1); /*% $$ = $2; parser->result = dispatch1(program, $$); %*/ local_pop(); } ; top_compstmt : top_stmts opt_terms { /*%%%*/ void_stmts($1); /*% %*/ $$ = $1; } ; top_stmts : none { /*%%%*/ $$ = new_begin(0, &@1); /*% $$ = dispatch2(stmts_add, dispatch0(stmts_new), dispatch0(void_stmt)); %*/ } | top_stmt { /*%%%*/ $$ = newline_node($1); /*% $$ = dispatch2(stmts_add, dispatch0(stmts_new), $1); %*/ } | top_stmts terms top_stmt { /*%%%*/ $$ = block_append($1, newline_node($3), &@1); /*% $$ = dispatch2(stmts_add, $1, $3); %*/ } | error top_stmt { $$ = remove_begin($2); } ; top_stmt : stmt | keyword_BEGIN { /*%%%*/ /* local_push(0); */ /*% %*/ } '{' top_compstmt '}' { /*%%%*/ ruby_eval_tree_begin = block_append(ruby_eval_tree_begin, $4, &@1); /* NEW_PREEXE($4)); */ /* local_pop(); */ $$ = new_begin(0, &@1); /*% $$ = dispatch1(BEGIN, $4); %*/ } ; bodystmt : compstmt opt_rescue opt_else opt_ensure { /*%%%*/ $$ = $1; if ($2) { $$ = new_rescue($1, $2, $3, &@1); } else if ($3) { rb_warn0("else without rescue is useless"); $$ = block_append($$, $3, &@1); } if ($4) { if ($$) { $$ = NEW_ENSURE($$, $4); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); } else { NODE *nil = NEW_NIL(); nd_set_lineno(nil, @1.first_line); nd_set_column(nil, @1.first_column); $$ = block_append($4, nil, &@1); } } fixpos($$, $1); /*% $$ = dispatch4(bodystmt, escape_Qundef($1), escape_Qundef($2), escape_Qundef($3), escape_Qundef($4)); %*/ } ; compstmt : stmts opt_terms { /*%%%*/ void_stmts($1); /*% %*/ $$ = $1; } ; stmts : none { /*%%%*/ $$ = new_begin(0, &@1); /*% $$ = dispatch2(stmts_add, dispatch0(stmts_new), dispatch0(void_stmt)); %*/ } | stmt_or_begin { /*%%%*/ $$ = newline_node($1); /*% $$ = dispatch2(stmts_add, dispatch0(stmts_new), $1); %*/ } | stmts terms stmt_or_begin { /*%%%*/ $$ = block_append($1, newline_node($3), &@1); /*% $$ = dispatch2(stmts_add, $1, $3); %*/ } | error stmt { $$ = remove_begin($2); } ; stmt_or_begin : stmt { $$ = $1; } | keyword_BEGIN { yyerror0("BEGIN is permitted only at toplevel"); /*%%%*/ /* local_push(0); */ /*% %*/ } '{' top_compstmt '}' { /*%%%*/ ruby_eval_tree_begin = block_append(ruby_eval_tree_begin, $4, &@1); /* NEW_PREEXE($4)); */ /* local_pop(); */ $$ = new_begin(0, &@1); /*% $$ = dispatch1(BEGIN, $4); %*/ } ; stmt : keyword_alias fitem {SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);} fitem { /*%%%*/ $$ = NEW_ALIAS($2, $4); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(alias, $2, $4); %*/ } | keyword_alias tGVAR tGVAR { /*%%%*/ $$ = NEW_VALIAS($2, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(var_alias, $2, $3); %*/ } | keyword_alias tGVAR tBACK_REF { /*%%%*/ char buf[2]; buf[0] = '$'; buf[1] = (char)$3->nd_nth; $$ = NEW_VALIAS($2, rb_intern2(buf, 2)); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(var_alias, $2, $3); %*/ } | keyword_alias tGVAR tNTH_REF { /*%%%*/ yyerror0("can't make alias for the number variables"); $$ = new_begin(0, &@1); /*% $$ = dispatch2(var_alias, $2, $3); $$ = dispatch1(alias_error, $$); ripper_error(); %*/ } | keyword_undef undef_list { /*%%%*/ $$ = $2; /*% $$ = dispatch1(undef, $2); %*/ } | stmt modifier_if expr_value { /*%%%*/ $$ = new_if($3, remove_begin($1), 0, &@1); fixpos($$, $3); /*% $$ = dispatch2(if_mod, $3, $1); %*/ } | stmt modifier_unless expr_value { /*%%%*/ $$ = new_unless($3, remove_begin($1), 0, &@1); fixpos($$, $3); /*% $$ = dispatch2(unless_mod, $3, $1); %*/ } | stmt modifier_while expr_value { /*%%%*/ if ($1 && nd_type($1) == NODE_BEGIN) { $$ = NEW_WHILE(cond($3, &@1), $1->nd_body, 0); } else { $$ = NEW_WHILE(cond($3, &@1), $1, 1); } nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(while_mod, $3, $1); %*/ } | stmt modifier_until expr_value { /*%%%*/ if ($1 && nd_type($1) == NODE_BEGIN) { $$ = NEW_UNTIL(cond($3, &@1), $1->nd_body, 0); } else { $$ = NEW_UNTIL(cond($3, &@1), $1, 1); } nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(until_mod, $3, $1); %*/ } | stmt modifier_rescue stmt { /*%%%*/ NODE *resq = new_resbody(0, remove_begin($3), 0, &@1); $$ = new_rescue(remove_begin($1), resq, 0, &@1); /*% $$ = dispatch2(rescue_mod, $1, $3); %*/ } | keyword_END '{' compstmt '}' { if (in_def || in_single) { rb_warn0("END in method; use at_exit"); } /*%%%*/ { NODE *scope = NEW_NODE( NODE_SCOPE, 0 /* tbl */, $3 /* body */, 0 /* args */); $$ = NEW_POSTEXE(scope); nd_set_lineno(scope, @1.first_line); nd_set_column(scope, @1.first_column); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); } /*% $$ = dispatch1(END, $3); %*/ } | command_asgn | mlhs '=' command_call { /*%%%*/ value_expr($3); $1->nd_value = $3; $$ = $1; /*% $$ = dispatch2(massign, $1, $3); %*/ } | lhs '=' mrhs { value_expr($3); $$ = node_assign($1, $3, &@1); } | mlhs '=' mrhs_arg { /*%%%*/ $1->nd_value = $3; $$ = $1; /*% $$ = dispatch2(massign, $1, $3); %*/ } | expr ; command_asgn : lhs '=' command_rhs { value_expr($3); $$ = node_assign($1, $3, &@1); } | var_lhs tOP_ASGN command_rhs { value_expr($3); $$ = new_op_assign($1, $2, $3, &@1); } | primary_value '[' opt_call_args rbracket tOP_ASGN command_rhs { /*%%%*/ NODE *args; value_expr($6); if (!$3) $3 = new_zarray(&@1); args = arg_concat($3, $6, &@1); if ($5 == tOROP) { $5 = 0; } else if ($5 == tANDOP) { $5 = 1; } $$ = NEW_OP_ASGN1($1, $5, args); fixpos($$, $1); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(aref_field, $1, escape_Qundef($3)); $$ = dispatch3(opassign, $$, $5, $6); %*/ } | primary_value call_op tIDENTIFIER tOP_ASGN command_rhs { value_expr($5); $$ = new_attr_op_assign($1, $2, $3, $4, $5, &@1); } | primary_value call_op tCONSTANT tOP_ASGN command_rhs { value_expr($5); $$ = new_attr_op_assign($1, $2, $3, $4, $5, &@1); } | primary_value tCOLON2 tCONSTANT tOP_ASGN command_rhs { $$ = const_path_field($1, $3, &@1); $$ = new_const_op_assign($$, $4, $5, &@1); } | primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_rhs { value_expr($5); $$ = new_attr_op_assign($1, ID2VAL(idCOLON2), $3, $4, $5, &@1); } | backref tOP_ASGN command_rhs { $1 = var_field($1); $$ = backref_assign_error($1, node_assign($1, $3, &@1), &@1); } ; command_rhs : command_call %prec tOP_ASGN { /*%%%*/ value_expr($1); $$ = $1; /*% %*/ } | command_call modifier_rescue stmt { /*%%%*/ value_expr($1); $$ = new_rescue($1, new_resbody(0, remove_begin($3), 0, &@1), 0, &@1); /*% $$ = dispatch2(rescue_mod, $1, $3); %*/ } | command_asgn ; expr : command_call | expr keyword_and expr { $$ = logop(idAND, $1, $3, &@1); } | expr keyword_or expr { $$ = logop(idOR, $1, $3, &@1); } | keyword_not opt_nl expr { $$ = call_uni_op(method_cond($3, &@1), METHOD_NOT, &@1); } | '!' command_call { $$ = call_uni_op(method_cond($2, &@1), '!', &@1); } | arg ; expr_value : expr { /*%%%*/ value_expr($1); $$ = $1; if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ } ; command_call : command | block_command ; block_command : block_call | block_call call_op2 operation2 command_args { $$ = new_qcall($2, $1, $3, $4, &@1); } ; cmd_brace_block : tLBRACE_ARG { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } brace_body '}' { $$ = $3; /*%%%*/ nd_set_line($$, $2); /*% %*/ } ; fcall : operation { /*%%%*/ $$ = new_fcall($1, 0, &@1); nd_set_line($$, tokline); /*% %*/ } ; command : fcall command_args %prec tLOWEST { /*%%%*/ $$ = $1; $$->nd_args = $2; /*% $$ = dispatch2(command, $1, $2); %*/ } | fcall command_args cmd_brace_block { block_dup_check($2,$3); $$ = new_command($1, $2); $$ = method_add_block($$, $3); fixpos($$, $1); } | primary_value call_op operation2 command_args %prec tLOWEST { $$ = new_command_qcall($2, $1, $3, $4, &@1); fixpos($$, $1); } | primary_value call_op operation2 command_args cmd_brace_block { block_dup_check($4,$5); $$ = new_command_qcall($2, $1, $3, $4, &@1); $$ = method_add_block($$, $5); fixpos($$, $1); } | primary_value tCOLON2 operation2 command_args %prec tLOWEST { $$ = new_command_qcall(ID2VAL(idCOLON2), $1, $3, $4, &@1); fixpos($$, $1); } | primary_value tCOLON2 operation2 command_args cmd_brace_block { block_dup_check($4,$5); $$ = new_command_qcall(ID2VAL(idCOLON2), $1, $3, $4, &@1); $$ = method_add_block($$, $5); fixpos($$, $1); } | keyword_super command_args { /*%%%*/ $$ = NEW_SUPER($2); fixpos($$, $2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(super, $2); %*/ } | keyword_yield command_args { /*%%%*/ $$ = new_yield($2, &@1); fixpos($$, $2); /*% $$ = dispatch1(yield, $2); %*/ } | keyword_return call_args { /*%%%*/ $$ = NEW_RETURN(ret_args($2)); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(return, $2); %*/ } | keyword_break call_args { /*%%%*/ $$ = NEW_BREAK(ret_args($2)); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(break, $2); %*/ } | keyword_next call_args { /*%%%*/ $$ = NEW_NEXT(ret_args($2)); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(next, $2); %*/ } ; mlhs : mlhs_basic | tLPAREN mlhs_inner rparen { /*%%%*/ $$ = $2; /*% $$ = dispatch1(mlhs_paren, $2); %*/ } ; mlhs_inner : mlhs_basic | tLPAREN mlhs_inner rparen { /*%%%*/ $$ = new_masgn(new_list($2, &@1), 0, &@1); /*% $$ = dispatch1(mlhs_paren, $2); %*/ } ; mlhs_basic : mlhs_head { /*%%%*/ $$ = new_masgn($1, 0, &@1); /*% $$ = $1; %*/ } | mlhs_head mlhs_item { /*%%%*/ $$ = new_masgn(list_append($1,$2,&@1), 0, &@1); /*% $$ = mlhs_add($1, $2); %*/ } | mlhs_head tSTAR mlhs_node { /*%%%*/ $$ = new_masgn($1, $3, &@1); /*% $$ = mlhs_add_star($1, $3); %*/ } | mlhs_head tSTAR mlhs_node ',' mlhs_post { /*%%%*/ $$ = new_masgn($1, new_postarg($3,$5,&@1), &@1); /*% $1 = mlhs_add_star($1, $3); $$ = mlhs_add_post($1, $5); %*/ } | mlhs_head tSTAR { /*%%%*/ $$ = new_masgn($1, NODE_SPECIAL_NO_NAME_REST, &@1); /*% $$ = mlhs_add_star($1, Qnil); %*/ } | mlhs_head tSTAR ',' mlhs_post { /*%%%*/ $$ = new_masgn($1, new_postarg(NODE_SPECIAL_NO_NAME_REST, $4, &@1), &@1); /*% $1 = mlhs_add_star($1, Qnil); $$ = mlhs_add_post($1, $4); %*/ } | tSTAR mlhs_node { /*%%%*/ $$ = new_masgn(0, $2, &@1); /*% $$ = mlhs_add_star(mlhs_new(), $2); %*/ } | tSTAR mlhs_node ',' mlhs_post { /*%%%*/ $$ = new_masgn(0, new_postarg($2,$4,&@1), &@1); /*% $2 = mlhs_add_star(mlhs_new(), $2); $$ = mlhs_add_post($2, $4); %*/ } | tSTAR { /*%%%*/ $$ = new_masgn(0, NODE_SPECIAL_NO_NAME_REST, &@1); /*% $$ = mlhs_add_star(mlhs_new(), Qnil); %*/ } | tSTAR ',' mlhs_post { /*%%%*/ $$ = new_masgn(0, new_postarg(NODE_SPECIAL_NO_NAME_REST, $3, &@1), &@1); /*% $$ = mlhs_add_star(mlhs_new(), Qnil); $$ = mlhs_add_post($$, $3); %*/ } ; mlhs_item : mlhs_node | tLPAREN mlhs_inner rparen { /*%%%*/ $$ = $2; /*% $$ = dispatch1(mlhs_paren, $2); %*/ } ; mlhs_head : mlhs_item ',' { /*%%%*/ $$ = new_list($1, &@1); /*% $$ = mlhs_add(mlhs_new(), $1); %*/ } | mlhs_head mlhs_item ',' { /*%%%*/ $$ = list_append($1, $2, &@1); /*% $$ = mlhs_add($1, $2); %*/ } ; mlhs_post : mlhs_item { /*%%%*/ $$ = new_list($1, &@1); /*% $$ = mlhs_add(mlhs_new(), $1); %*/ } | mlhs_post ',' mlhs_item { /*%%%*/ $$ = list_append($1, $3, &@1); /*% $$ = mlhs_add($1, $3); %*/ } ; mlhs_node : user_variable { $$ = assignable(var_field($1), 0, &@1); } | keyword_variable { $$ = assignable(var_field($1), 0, &@1); } | primary_value '[' opt_call_args rbracket { /*%%%*/ $$ = aryset($1, $3, &@1); /*% $$ = dispatch2(aref_field, $1, escape_Qundef($3)); %*/ } | primary_value call_op tIDENTIFIER { /*%%%*/ $$ = attrset($1, $2, $3, &@1); /*% $$ = dispatch3(field, $1, $2, $3); %*/ } | primary_value tCOLON2 tIDENTIFIER { /*%%%*/ $$ = attrset($1, idCOLON2, $3, &@1); /*% $$ = dispatch2(const_path_field, $1, $3); %*/ } | primary_value call_op tCONSTANT { /*%%%*/ $$ = attrset($1, $2, $3, &@1); /*% $$ = dispatch3(field, $1, $2, $3); %*/ } | primary_value tCOLON2 tCONSTANT { $$ = const_decl(const_path_field($1, $3, &@1), &@1); } | tCOLON3 tCONSTANT { $$ = const_decl(top_const_field($2), &@1); } | backref { $1 = var_field($1); $$ = backref_assign_error($1, $1, &@1); } ; lhs : user_variable { $$ = assignable(var_field($1), 0, &@1); /*%%%*/ if (!$$) $$ = new_begin(0, &@1); /*% %*/ } | keyword_variable { $$ = assignable(var_field($1), 0, &@1); /*%%%*/ if (!$$) $$ = new_begin(0, &@1); /*% %*/ } | primary_value '[' opt_call_args rbracket { /*%%%*/ $$ = aryset($1, $3, &@1); /*% $$ = dispatch2(aref_field, $1, escape_Qundef($3)); %*/ } | primary_value call_op tIDENTIFIER { /*%%%*/ $$ = attrset($1, $2, $3, &@1); /*% $$ = dispatch3(field, $1, $2, $3); %*/ } | primary_value tCOLON2 tIDENTIFIER { /*%%%*/ $$ = attrset($1, idCOLON2, $3, &@1); /*% $$ = dispatch3(field, $1, ID2VAL(idCOLON2), $3); %*/ } | primary_value call_op tCONSTANT { /*%%%*/ $$ = attrset($1, $2, $3, &@1); /*% $$ = dispatch3(field, $1, $2, $3); %*/ } | primary_value tCOLON2 tCONSTANT { $$ = const_decl(const_path_field($1, $3, &@1), &@1); } | tCOLON3 tCONSTANT { $$ = const_decl(top_const_field($2), &@1); } | backref { $1 = var_field($1); $$ = backref_assign_error($1, $1, &@1); } ; cname : tIDENTIFIER { /*%%%*/ yyerror0("class/module name must be CONSTANT"); /*% $$ = dispatch1(class_name_error, $1); ripper_error(); %*/ } | tCONSTANT ; cpath : tCOLON3 cname { /*%%%*/ $$ = NEW_COLON3($2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(top_const_ref, $2); %*/ } | cname { /*%%%*/ $$ = NEW_COLON2(0, $$); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(const_ref, $1); %*/ } | primary_value tCOLON2 cname { /*%%%*/ $$ = NEW_COLON2($1, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(const_path_ref, $1, $3); %*/ } ; fname : tIDENTIFIER | tCONSTANT | tFID | op { SET_LEX_STATE(EXPR_ENDFN); $$ = $1; } | reswords { SET_LEX_STATE(EXPR_ENDFN); $$ = $1; } ; fsym : fname | symbol ; fitem : fsym { /*%%%*/ $$ = new_lit(ID2SYM($1), &@1); /*% $$ = dispatch1(symbol_literal, $1); %*/ } | dsym ; undef_list : fitem { /*%%%*/ $$ = new_undef($1, &@1); /*% $$ = rb_ary_new3(1, get_value($1)); %*/ } | undef_list ',' {SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM);} fitem { /*%%%*/ NODE *undef = new_undef($4, &@1); $$ = block_append($1, undef, &@1); /*% rb_ary_push($1, get_value($4)); %*/ } ; op : '|' { ifndef_ripper($$ = '|'); } | '^' { ifndef_ripper($$ = '^'); } | '&' { ifndef_ripper($$ = '&'); } | tCMP { ifndef_ripper($$ = tCMP); } | tEQ { ifndef_ripper($$ = tEQ); } | tEQQ { ifndef_ripper($$ = tEQQ); } | tMATCH { ifndef_ripper($$ = tMATCH); } | tNMATCH { ifndef_ripper($$ = tNMATCH); } | '>' { ifndef_ripper($$ = '>'); } | tGEQ { ifndef_ripper($$ = tGEQ); } | '<' { ifndef_ripper($$ = '<'); } | tLEQ { ifndef_ripper($$ = tLEQ); } | tNEQ { ifndef_ripper($$ = tNEQ); } | tLSHFT { ifndef_ripper($$ = tLSHFT); } | tRSHFT { ifndef_ripper($$ = tRSHFT); } | '+' { ifndef_ripper($$ = '+'); } | '-' { ifndef_ripper($$ = '-'); } | '*' { ifndef_ripper($$ = '*'); } | tSTAR { ifndef_ripper($$ = '*'); } | '/' { ifndef_ripper($$ = '/'); } | '%' { ifndef_ripper($$ = '%'); } | tPOW { ifndef_ripper($$ = tPOW); } | tDSTAR { ifndef_ripper($$ = tDSTAR); } | '!' { ifndef_ripper($$ = '!'); } | '~' { ifndef_ripper($$ = '~'); } | tUPLUS { ifndef_ripper($$ = tUPLUS); } | tUMINUS { ifndef_ripper($$ = tUMINUS); } | tAREF { ifndef_ripper($$ = tAREF); } | tASET { ifndef_ripper($$ = tASET); } | '`' { ifndef_ripper($$ = '`'); } ; reswords : keyword__LINE__ | keyword__FILE__ | keyword__ENCODING__ | keyword_BEGIN | keyword_END | keyword_alias | keyword_and | keyword_begin | keyword_break | keyword_case | keyword_class | keyword_def | keyword_defined | keyword_do | keyword_else | keyword_elsif | keyword_end | keyword_ensure | keyword_false | keyword_for | keyword_in | keyword_module | keyword_next | keyword_nil | keyword_not | keyword_or | keyword_redo | keyword_rescue | keyword_retry | keyword_return | keyword_self | keyword_super | keyword_then | keyword_true | keyword_undef | keyword_when | keyword_yield | keyword_if | keyword_unless | keyword_while | keyword_until ; arg : lhs '=' arg_rhs { $$ = node_assign($1, $3, &@1); } | var_lhs tOP_ASGN arg_rhs { $$ = new_op_assign($1, $2, $3, &@1); } | primary_value '[' opt_call_args rbracket tOP_ASGN arg_rhs { /*%%%*/ NODE *args; value_expr($6); if (!$3) $3 = new_zarray(&@1); if (nd_type($3) == NODE_BLOCK_PASS) { args = NEW_ARGSCAT($3, $6); nd_set_lineno(args, @1.first_line); nd_set_column(args, @1.first_column); } else { args = arg_concat($3, $6, &@1); } if ($5 == tOROP) { $5 = 0; } else if ($5 == tANDOP) { $5 = 1; } $$ = NEW_OP_ASGN1($1, $5, args); fixpos($$, $1); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $1 = dispatch2(aref_field, $1, escape_Qundef($3)); $$ = dispatch3(opassign, $1, $5, $6); %*/ } | primary_value call_op tIDENTIFIER tOP_ASGN arg_rhs { value_expr($5); $$ = new_attr_op_assign($1, $2, $3, $4, $5, &@1); } | primary_value call_op tCONSTANT tOP_ASGN arg_rhs { value_expr($5); $$ = new_attr_op_assign($1, $2, $3, $4, $5, &@1); } | primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg_rhs { value_expr($5); $$ = new_attr_op_assign($1, ID2VAL(idCOLON2), $3, $4, $5, &@1); } | primary_value tCOLON2 tCONSTANT tOP_ASGN arg_rhs { $$ = const_path_field($1, $3, &@1); $$ = new_const_op_assign($$, $4, $5, &@1); } | tCOLON3 tCONSTANT tOP_ASGN arg_rhs { $$ = top_const_field($2); $$ = new_const_op_assign($$, $3, $4, &@1); } | backref tOP_ASGN arg_rhs { $1 = var_field($1); $$ = backref_assign_error($1, new_op_assign($1, $2, $3, &@1), &@1); } | arg tDOT2 arg { /*%%%*/ value_expr($1); value_expr($3); $$ = NEW_DOT2($1, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(dot2, $1, $3); %*/ } | arg tDOT3 arg { /*%%%*/ value_expr($1); value_expr($3); $$ = NEW_DOT3($1, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(dot3, $1, $3); %*/ } | arg '+' arg { $$ = call_bin_op($1, '+', $3, &@1); } | arg '-' arg { $$ = call_bin_op($1, '-', $3, &@1); } | arg '*' arg { $$ = call_bin_op($1, '*', $3, &@1); } | arg '/' arg { $$ = call_bin_op($1, '/', $3, &@1); } | arg '%' arg { $$ = call_bin_op($1, '%', $3, &@1); } | arg tPOW arg { $$ = call_bin_op($1, idPow, $3, &@1); } | tUMINUS_NUM simple_numeric tPOW arg { $$ = call_uni_op(call_bin_op($2, idPow, $4, &@1), idUMinus, &@1); } | tUPLUS arg { $$ = call_uni_op($2, idUPlus, &@1); } | tUMINUS arg { $$ = call_uni_op($2, idUMinus, &@1); } | arg '|' arg { $$ = call_bin_op($1, '|', $3, &@1); } | arg '^' arg { $$ = call_bin_op($1, '^', $3, &@1); } | arg '&' arg { $$ = call_bin_op($1, '&', $3, &@1); } | arg tCMP arg { $$ = call_bin_op($1, idCmp, $3, &@1); } | rel_expr %prec tCMP | arg tEQ arg { $$ = call_bin_op($1, idEq, $3, &@1); } | arg tEQQ arg { $$ = call_bin_op($1, idEqq, $3, &@1); } | arg tNEQ arg { $$ = call_bin_op($1, idNeq, $3, &@1); } | arg tMATCH arg { $$ = match_op($1, $3, &@1); } | arg tNMATCH arg { $$ = call_bin_op($1, idNeqTilde, $3, &@1); } | '!' arg { $$ = call_uni_op(method_cond($2, &@1), '!', &@1); } | '~' arg { $$ = call_uni_op($2, '~', &@1); } | arg tLSHFT arg { $$ = call_bin_op($1, idLTLT, $3, &@1); } | arg tRSHFT arg { $$ = call_bin_op($1, idGTGT, $3, &@1); } | arg tANDOP arg { $$ = logop(idANDOP, $1, $3, &@1); } | arg tOROP arg { $$ = logop(idOROP, $1, $3, &@1); } | keyword_defined opt_nl {in_defined = 1;} arg { in_defined = 0; $$ = new_defined($4, &@1); } | arg '?' arg opt_nl ':' arg { /*%%%*/ value_expr($1); $$ = new_if($1, $3, $6, &@1); fixpos($$, $1); /*% $$ = dispatch3(ifop, $1, $3, $6); %*/ } | primary { $$ = $1; } ; relop : '>' {$$ = '>';} | '<' {$$ = '<';} | tGEQ {$$ = idGE;} | tLEQ {$$ = idLE;} ; rel_expr : arg relop arg %prec '>' { $$ = call_bin_op($1, $2, $3, &@1); } | rel_expr relop arg %prec '>' { rb_warning1("comparison '%s' after comparison", WARN_ID($2)); $$ = call_bin_op($1, $2, $3, &@1); } ; arg_value : arg { /*%%%*/ value_expr($1); $$ = $1; if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ } ; aref_args : none | args trailer { $$ = $1; } | args ',' assocs trailer { /*%%%*/ $$ = $3 ? arg_append($1, new_hash($3, &@1), &@1) : $1; /*% $$ = arg_add_assocs($1, $3); %*/ } | assocs trailer { /*%%%*/ $$ = $1 ? new_list(new_hash($1, &@1), &@1) : 0; /*% $$ = arg_add_assocs(arg_new(), $1); %*/ } ; arg_rhs : arg %prec tOP_ASGN { /*%%%*/ value_expr($1); $$ = $1; /*% %*/ } | arg modifier_rescue arg { /*%%%*/ value_expr($1); $$ = new_rescue($1, new_resbody(0, remove_begin($3), 0, &@1), 0, &@1); /*% $$ = dispatch2(rescue_mod, $1, $3); %*/ } ; paren_args : '(' opt_call_args rparen { /*%%%*/ $$ = $2; /*% $$ = dispatch1(arg_paren, escape_Qundef($2)); %*/ } ; opt_paren_args : none | paren_args ; opt_call_args : none | call_args | args ',' { $$ = $1; } | args ',' assocs ',' { /*%%%*/ $$ = $3 ? arg_append($1, new_hash($3, &@1), &@1) : $1; /*% $$ = arg_add_assocs($1, $3); %*/ } | assocs ',' { /*%%%*/ $$ = $1 ? new_list(new_hash($1, &@1), &@1) : 0; /*% $$ = arg_add_assocs(arg_new(), $1); %*/ } ; call_args : command { /*%%%*/ value_expr($1); $$ = new_list($1, &@1); /*% $$ = arg_add(arg_new(), $1); %*/ } | args opt_block_arg { /*%%%*/ $$ = arg_blk_pass($1, $2); /*% $$ = arg_add_optblock($1, $2); %*/ } | assocs opt_block_arg { /*%%%*/ $$ = $1 ? new_list(new_hash($1, &@1), &@1) : 0; $$ = arg_blk_pass($$, $2); /*% $$ = arg_add_assocs(arg_new(), $1); $$ = arg_add_optblock($$, $2); %*/ } | args ',' assocs opt_block_arg { /*%%%*/ $$ = $3 ? arg_append($1, new_hash($3, &@1), &@1) : $1; $$ = arg_blk_pass($$, $4); /*% $$ = arg_add_optblock(arg_add_assocs($1, $3), $4); %*/ } | block_arg /*%c%*/ /*%c { $$ = arg_add_block(arg_new(), $1); } %*/ ; command_args : { $$ = cmdarg_stack; CMDARG_PUSH(1); } call_args { /* CMDARG_POP() */ CMDARG_SET($1); $$ = $2; } ; block_arg : tAMPER arg_value { /*%%%*/ $$ = NEW_BLOCK_PASS($2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = $2; %*/ } ; opt_block_arg : ',' block_arg { $$ = $2; } | none { $$ = 0; } ; args : arg_value { /*%%%*/ $$ = new_list($1, &@1); /*% $$ = arg_add(arg_new(), $1); %*/ } | tSTAR arg_value { /*%%%*/ $$ = NEW_SPLAT($2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = arg_add_star(arg_new(), $2); %*/ } | args ',' arg_value { /*%%%*/ NODE *n1; if ((n1 = splat_array($1)) != 0) { $$ = list_append(n1, $3, &@1); } else { $$ = arg_append($1, $3, &@1); } /*% $$ = arg_add($1, $3); %*/ } | args ',' tSTAR arg_value { /*%%%*/ NODE *n1; if ((nd_type($4) == NODE_ARRAY) && (n1 = splat_array($1)) != 0) { $$ = list_concat(n1, $4); } else { $$ = arg_concat($1, $4, &@1); } /*% $$ = arg_add_star($1, $4); %*/ } ; mrhs_arg : mrhs | arg_value ; mrhs : args ',' arg_value { /*%%%*/ NODE *n1; if ((n1 = splat_array($1)) != 0) { $$ = list_append(n1, $3, &@1); } else { $$ = arg_append($1, $3, &@1); } /*% $$ = mrhs_add(args2mrhs($1), $3); %*/ } | args ',' tSTAR arg_value { /*%%%*/ NODE *n1; if (nd_type($4) == NODE_ARRAY && (n1 = splat_array($1)) != 0) { $$ = list_concat(n1, $4); } else { $$ = arg_concat($1, $4, &@1); } /*% $$ = mrhs_add_star(args2mrhs($1), $4); %*/ } | tSTAR arg_value { /*%%%*/ $$ = NEW_SPLAT($2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = mrhs_add_star(mrhs_new(), $2); %*/ } ; primary : literal | strings | xstring | regexp | words | qwords | symbols | qsymbols | var_ref | backref | tFID { /*%%%*/ $$ = new_fcall($1, 0, &@1); /*% $$ = method_arg(dispatch1(fcall, $1), arg_new()); %*/ } | k_begin { $1 = cmdarg_stack; CMDARG_SET(0); /*%%%*/ $$ = ruby_sourceline; /*% %*/ } bodystmt k_end { CMDARG_SET($1); /*%%%*/ if ($3 == NULL) { $$ = NEW_NIL(); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); } else { set_line_body($3, $2); $$ = new_begin($3, &@1); } nd_set_line($$, $2); /*% $$ = dispatch1(begin, $3); %*/ } | tLPAREN_ARG {SET_LEX_STATE(EXPR_ENDARG);} rparen { /*%%%*/ $$ = new_begin(0, &@1); /*% $$ = dispatch1(paren, 0); %*/ } | tLPAREN_ARG { $1 = cmdarg_stack; CMDARG_SET(0); } stmt {SET_LEX_STATE(EXPR_ENDARG);} rparen { CMDARG_SET($1); /*%%%*/ $$ = $3; /*% $$ = dispatch1(paren, $3); %*/ } | tLPAREN compstmt ')' { /*%%%*/ $$ = $2; /*% $$ = dispatch1(paren, $2); %*/ } | primary_value tCOLON2 tCONSTANT { /*%%%*/ $$ = NEW_COLON2($1, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(const_path_ref, $1, $3); %*/ } | tCOLON3 tCONSTANT { /*%%%*/ $$ = NEW_COLON3($2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(top_const_ref, $2); %*/ } | tLBRACK aref_args ']' { /*%%%*/ if ($2 == 0) { $$ = new_zarray(&@1); /* zero length array*/ } else { $$ = $2; } /*% $$ = dispatch1(array, escape_Qundef($2)); %*/ } | tLBRACE assoc_list '}' { /*%%%*/ $$ = new_hash($2, &@1); $$->nd_alen = TRUE; /*% $$ = dispatch1(hash, escape_Qundef($2)); %*/ } | keyword_return { /*%%%*/ $$ = NEW_RETURN(0); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch0(return0); %*/ } | keyword_yield '(' call_args rparen { /*%%%*/ $$ = new_yield($3, &@1); /*% $$ = dispatch1(yield, dispatch1(paren, $3)); %*/ } | keyword_yield '(' rparen { /*%%%*/ $$ = NEW_YIELD(0); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(yield, dispatch1(paren, arg_new())); %*/ } | keyword_yield { /*%%%*/ $$ = NEW_YIELD(0); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch0(yield0); %*/ } | keyword_defined opt_nl '(' {in_defined = 1;} expr rparen { in_defined = 0; $$ = new_defined($5, &@1); } | keyword_not '(' expr rparen { $$ = call_uni_op(method_cond($3, &@1), METHOD_NOT, &@1); } | keyword_not '(' rparen { $$ = call_uni_op(method_cond(new_nil(), &@1), METHOD_NOT, &@1); } | fcall brace_block { /*%%%*/ $2->nd_iter = $1; $$ = $2; /*% $$ = method_arg(dispatch1(fcall, $1), arg_new()); $$ = method_add_block($$, $2); %*/ } | method_call | method_call brace_block { /*%%%*/ block_dup_check($1->nd_args, $2); $2->nd_iter = $1; $$ = $2; /*% $$ = method_add_block($1, $2); %*/ } | tLAMBDA lambda { $$ = $2; } | k_if expr_value then compstmt if_tail k_end { /*%%%*/ $$ = new_if($2, $4, $5, &@1); fixpos($$, $2); /*% $$ = dispatch3(if, $2, $4, escape_Qundef($5)); %*/ } | k_unless expr_value then compstmt opt_else k_end { /*%%%*/ $$ = new_unless($2, $4, $5, &@1); fixpos($$, $2); /*% $$ = dispatch3(unless, $2, $4, escape_Qundef($5)); %*/ } | k_while {COND_PUSH(1);} expr_value do {COND_POP();} compstmt k_end { /*%%%*/ $$ = NEW_WHILE(cond($3, &@1), $6, 1); fixpos($$, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(while, $3, $6); %*/ } | k_until {COND_PUSH(1);} expr_value do {COND_POP();} compstmt k_end { /*%%%*/ $$ = NEW_UNTIL(cond($3, &@1), $6, 1); fixpos($$, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(until, $3, $6); %*/ } | k_case expr_value opt_terms case_body k_end { /*%%%*/ $$ = NEW_CASE($2, $4); fixpos($$, $2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(case, $2, $4); %*/ } | k_case opt_terms case_body k_end { /*%%%*/ $$ = NEW_CASE2(0, $3); nd_set_line($3, $1); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(case, Qnil, $3); %*/ } | k_for for_var keyword_in {COND_PUSH(1);} expr_value do {COND_POP();} compstmt k_end { /*%%%*/ /* * for a, b, c in e * #=> * e.each{|*x| a, b, c = x} * * for a in e * #=> * e.each{|x| a, = x} */ ID id = internal_id(); ID *tbl = ALLOC_N(ID, 2); NODE *m = NEW_ARGS_AUX(0, 0); NODE *args, *scope; switch (nd_type($2)) { case NODE_MASGN: m->nd_next = node_assign($2, new_for(new_dvar(id, &@1), 0, 0, &@1), &@1); args = new_args(m, 0, id, 0, new_args_tail(0, 0, 0, &@1)); break; case NODE_LASGN: case NODE_DASGN: case NODE_DASGN_CURR: $2->nd_value = new_dvar(id, &@1); m->nd_plen = 1; m->nd_next = $2; args = new_args(m, 0, 0, 0, new_args_tail(0, 0, 0, &@1)); break; default: { NODE *masgn = new_masgn(new_list($2, &@1), 0, &@1); m->nd_next = node_assign(masgn, new_dvar(id, &@1), &@1); args = new_args(m, 0, id, 0, new_args_tail(0, 0, 0, &@1)); break; } } add_mark_object((VALUE)rb_imemo_alloc_new((VALUE)tbl, 0, 0, 0)); scope = NEW_NODE(NODE_SCOPE, tbl, $8, args); nd_set_lineno(scope, @1.first_line); nd_set_column(scope, @1.first_column); tbl[0] = 1; tbl[1] = id; $$ = new_for(0, $5, scope, &@1); fixpos($$, $2); /*% $$ = dispatch3(for, $2, $5, $8); %*/ } | k_class cpath superclass { if (in_def || in_single) yyerror0("class definition in method body"); local_push(0); /*%%%*/ $$ = ruby_sourceline; /*% %*/ } bodystmt k_end { /*%%%*/ $$ = NEW_CLASS($2, $5, $3); nd_set_lineno($$->nd_body, @1.first_line); nd_set_column($$->nd_body, @1.first_column); set_line_body($5, $4); nd_set_line($$, $4); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch3(class, $2, $3, $5); %*/ local_pop(); } | k_class tLSHFT expr { $$ = (in_def << 1) | in_single; in_def = 0; in_single = 0; local_push(0); } term bodystmt k_end { /*%%%*/ $$ = NEW_SCLASS($3, $6); nd_set_lineno($$->nd_body, @1.first_line); nd_set_column($$->nd_body, @1.first_column); set_line_body($6, nd_line($3)); fixpos($$, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(sclass, $3, $6); %*/ local_pop(); in_def = ($4 >> 1) & 1; in_single = $4 & 1; } | k_module cpath { if (in_def || in_single) yyerror0("module definition in method body"); local_push(0); /*%%%*/ $$ = ruby_sourceline; /*% %*/ } bodystmt k_end { /*%%%*/ $$ = NEW_MODULE($2, $4); nd_set_lineno($$->nd_body, @1.first_line); nd_set_column($$->nd_body, @1.first_column); set_line_body($4, $3); nd_set_line($$, $3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch2(module, $2, $4); %*/ local_pop(); } | k_def fname { local_push(0); $$ = current_arg; current_arg = 0; } { $$ = in_def; in_def = 1; } f_arglist bodystmt k_end { /*%%%*/ NODE *body = remove_begin($6); reduce_nodes(&body); $$ = NEW_DEFN($2, $5, body, METHOD_VISI_PRIVATE); nd_set_lineno($$->nd_defn, @1.first_line); nd_set_column($$->nd_defn, @1.first_column); set_line_body(body, $1); nd_set_line($$, $1); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch3(def, $2, $5, $6); %*/ local_pop(); in_def = $4 & 1; current_arg = $3; } | k_def singleton dot_or_colon {SET_LEX_STATE(EXPR_FNAME);} fname { $4 = in_single; in_single = 1; SET_LEX_STATE(EXPR_ENDFN|EXPR_LABEL); /* force for args */ local_push(0); $$ = current_arg; current_arg = 0; } f_arglist bodystmt k_end { /*%%%*/ NODE *body = remove_begin($8); reduce_nodes(&body); $$ = NEW_DEFS($2, $5, $7, body); nd_set_lineno($$->nd_defn, @1.first_line); nd_set_column($$->nd_defn, @1.first_column); set_line_body(body, $1); nd_set_line($$, $1); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch5(defs, $2, $3, $5, $7, $8); %*/ local_pop(); in_single = $4 & 1; current_arg = $6; } | keyword_break { /*%%%*/ $$ = NEW_BREAK(0); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(break, arg_new()); %*/ } | keyword_next { /*%%%*/ $$ = NEW_NEXT(0); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(next, arg_new()); %*/ } | keyword_redo { /*%%%*/ $$ = NEW_REDO(); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch0(redo); %*/ } | keyword_retry { /*%%%*/ $$ = NEW_RETRY(); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch0(retry); %*/ } ; primary_value : primary { /*%%%*/ value_expr($1); $$ = $1; if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ } ; k_begin : keyword_begin { token_info_push("begin"); } ; k_if : keyword_if { token_info_push("if"); } ; k_unless : keyword_unless { token_info_push("unless"); } ; k_while : keyword_while { token_info_push("while"); } ; k_until : keyword_until { token_info_push("until"); } ; k_case : keyword_case { token_info_push("case"); /*%%%*/ $$ = ruby_sourceline; /*% %*/ } ; k_for : keyword_for { token_info_push("for"); } ; k_class : keyword_class { token_info_push("class"); } ; k_module : keyword_module { token_info_push("module"); } ; k_def : keyword_def { token_info_push("def"); /*%%%*/ $$ = ruby_sourceline; /*% %*/ } ; k_end : keyword_end { token_info_pop("end"); } ; then : term /*%c%*/ /*%c { $$ = Qnil; } %*/ | keyword_then | term keyword_then /*%c%*/ /*%c { $$ = $2; } %*/ ; do : term /*%c%*/ /*%c { $$ = Qnil; } %*/ | keyword_do_cond ; if_tail : opt_else | keyword_elsif expr_value then compstmt if_tail { /*%%%*/ $$ = new_if($2, $4, $5, &@1); fixpos($$, $2); /*% $$ = dispatch3(elsif, $2, $4, escape_Qundef($5)); %*/ } ; opt_else : none | keyword_else compstmt { /*%%%*/ $$ = $2; /*% $$ = dispatch1(else, $2); %*/ } ; for_var : lhs | mlhs ; f_marg : f_norm_arg { $$ = assignable($1, 0, &@1); /*%%%*/ /*% %*/ } | tLPAREN f_margs rparen { /*%%%*/ $$ = $2; /*% $$ = dispatch1(mlhs_paren, $2); %*/ } ; f_marg_list : f_marg { /*%%%*/ $$ = new_list($1, &@1); /*% $$ = mlhs_add(mlhs_new(), $1); %*/ } | f_marg_list ',' f_marg { /*%%%*/ $$ = list_append($1, $3, &@1); /*% $$ = mlhs_add($1, $3); %*/ } ; f_margs : f_marg_list { /*%%%*/ $$ = new_masgn($1, 0, &@1); /*% $$ = $1; %*/ } | f_marg_list ',' tSTAR f_norm_arg { $$ = assignable($4, 0, &@1); /*%%%*/ $$ = new_masgn($1, $$, &@1); /*% $$ = mlhs_add_star($1, $$); %*/ } | f_marg_list ',' tSTAR f_norm_arg ',' f_marg_list { $$ = assignable($4, 0, &@1); /*%%%*/ $$ = new_masgn($1, new_postarg($$, $6, &@1), &@1); /*% $$ = mlhs_add_star($1, $$); $$ = mlhs_add_post($$, $6); %*/ } | f_marg_list ',' tSTAR { /*%%%*/ $$ = new_masgn($1, NODE_SPECIAL_NO_NAME_REST, &@1); /*% $$ = mlhs_add_star($1, Qnil); %*/ } | f_marg_list ',' tSTAR ',' f_marg_list { /*%%%*/ $$ = new_masgn($1, new_postarg(NODE_SPECIAL_NO_NAME_REST, $5, &@1), &@1); /*% $$ = mlhs_add_star($1, Qnil); $$ = mlhs_add_post($$, $5); %*/ } | tSTAR f_norm_arg { $$ = assignable($2, 0, &@1); /*%%%*/ $$ = new_masgn(0, $$, &@1); /*% $$ = mlhs_add_star(mlhs_new(), $$); %*/ } | tSTAR f_norm_arg ',' f_marg_list { $$ = assignable($2, 0, &@1); /*%%%*/ $$ = new_masgn(0, new_postarg($$, $4, &@1), &@1); /*% $$ = mlhs_add_star(mlhs_new(), $$); $$ = mlhs_add_post($$, $4); %*/ } | tSTAR { /*%%%*/ $$ = new_masgn(0, NODE_SPECIAL_NO_NAME_REST, &@1); /*% $$ = mlhs_add_star(mlhs_new(), Qnil); %*/ } | tSTAR ',' f_marg_list { /*%%%*/ $$ = new_masgn(0, new_postarg(NODE_SPECIAL_NO_NAME_REST, $3, &@1), &@1); /*% $$ = mlhs_add_star(mlhs_new(), Qnil); $$ = mlhs_add_post($$, $3); %*/ } ; block_args_tail : f_block_kwarg ',' f_kwrest opt_f_block_arg { $$ = new_args_tail($1, $3, $4, &@1); } | f_block_kwarg opt_f_block_arg { $$ = new_args_tail($1, Qnone, $2, &@1); } | f_kwrest opt_f_block_arg { $$ = new_args_tail(Qnone, $1, $2, &@1); } | f_block_arg { $$ = new_args_tail(Qnone, Qnone, $1, &@1); } ; opt_block_args_tail : ',' block_args_tail { $$ = $2; } | /* none */ { $$ = new_args_tail(Qnone, Qnone, Qnone, &@0); } ; block_param : f_arg ',' f_block_optarg ',' f_rest_arg opt_block_args_tail { $$ = new_args($1, $3, $5, Qnone, $6); } | f_arg ',' f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail { $$ = new_args($1, $3, $5, $7, $8); } | f_arg ',' f_block_optarg opt_block_args_tail { $$ = new_args($1, $3, Qnone, Qnone, $4); } | f_arg ',' f_block_optarg ',' f_arg opt_block_args_tail { $$ = new_args($1, $3, Qnone, $5, $6); } | f_arg ',' f_rest_arg opt_block_args_tail { $$ = new_args($1, Qnone, $3, Qnone, $4); } | f_arg ',' { $$ = new_args($1, Qnone, 1, Qnone, new_args_tail(Qnone, Qnone, Qnone, &@1)); /*%%%*/ /*% dispatch1(excessed_comma, $$); %*/ } | f_arg ',' f_rest_arg ',' f_arg opt_block_args_tail { $$ = new_args($1, Qnone, $3, $5, $6); } | f_arg opt_block_args_tail { $$ = new_args($1, Qnone, Qnone, Qnone, $2); } | f_block_optarg ',' f_rest_arg opt_block_args_tail { $$ = new_args(Qnone, $1, $3, Qnone, $4); } | f_block_optarg ',' f_rest_arg ',' f_arg opt_block_args_tail { $$ = new_args(Qnone, $1, $3, $5, $6); } | f_block_optarg opt_block_args_tail { $$ = new_args(Qnone, $1, Qnone, Qnone, $2); } | f_block_optarg ',' f_arg opt_block_args_tail { $$ = new_args(Qnone, $1, Qnone, $3, $4); } | f_rest_arg opt_block_args_tail { $$ = new_args(Qnone, Qnone, $1, Qnone, $2); } | f_rest_arg ',' f_arg opt_block_args_tail { $$ = new_args(Qnone, Qnone, $1, $3, $4); } | block_args_tail { $$ = new_args(Qnone, Qnone, Qnone, Qnone, $1); } ; opt_block_param : none | block_param_def { command_start = TRUE; } ; block_param_def : '|' opt_bv_decl '|' { current_arg = 0; /*%%%*/ $$ = 0; /*% $$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil,Qnil,Qnil), escape_Qundef($2)); %*/ } | tOROP { /*%%%*/ $$ = 0; /*% $$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil,Qnil,Qnil), Qnil); %*/ } | '|' block_param opt_bv_decl '|' { current_arg = 0; /*%%%*/ $$ = $2; /*% $$ = blockvar_new(escape_Qundef($2), escape_Qundef($3)); %*/ } ; opt_bv_decl : opt_nl { $$ = 0; } | opt_nl ';' bv_decls opt_nl { /*%%%*/ $$ = 0; /*% $$ = $3; %*/ } ; bv_decls : bvar /*%c%*/ /*%c { $$ = rb_ary_new3(1, get_value($1)); } %*/ | bv_decls ',' bvar /*%c%*/ /*%c { rb_ary_push($1, get_value($3)); } %*/ ; bvar : tIDENTIFIER { new_bv(get_id($1)); /*%%%*/ /*% $$ = get_value($1); %*/ } | f_bad_arg { $$ = 0; } ; lambda : { $$ = dyna_push(); } { $$ = lpar_beg; lpar_beg = ++paren_nest; } f_larglist { $$ = ruby_sourceline; } { $$ = cmdarg_stack; CMDARG_SET(0); } lambda_body { lpar_beg = $2; CMDARG_SET($5); CMDARG_LEXPOP(); /*%%%*/ $$ = NEW_LAMBDA($3, $6); nd_set_line($$, $4); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); nd_set_lineno($$->nd_body, @1.first_line); nd_set_column($$->nd_body, @1.first_column); /*% $$ = dispatch2(lambda, $3, $6); %*/ dyna_pop($1); } ; f_larglist : '(' f_args opt_bv_decl ')' { /*%%%*/ $$ = $2; /*% $$ = dispatch1(paren, $2); %*/ } | f_args { $$ = $1; } ; lambda_body : tLAMBEG compstmt '}' { token_info_pop("}"); $$ = $2; } | keyword_do_LAMBDA compstmt k_end { $$ = $2; } ; do_block : keyword_do_block { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } do_body keyword_end { $$ = $3; /*%%%*/ nd_set_line($$, $2); /*% %*/ } ; block_call : command do_block { /*%%%*/ if (nd_type($1) == NODE_YIELD) { compile_error(PARSER_ARG "block given to yield"); } else { block_dup_check($1->nd_args, $2); } $2->nd_iter = $1; $$ = $2; fixpos($$, $1); /*% $$ = method_add_block($1, $2); %*/ } | block_call call_op2 operation2 opt_paren_args { $$ = new_qcall($2, $1, $3, $4, &@1); } | block_call call_op2 operation2 opt_paren_args brace_block { /*%%%*/ block_dup_check($4, $5); $5->nd_iter = new_command_qcall($2, $1, $3, $4, &@1); $$ = $5; fixpos($$, $1); /*% $$ = dispatch4(command_call, $1, $2, $3, $4); $$ = method_add_block($$, $5); %*/ } | block_call call_op2 operation2 command_args do_block { /*%%%*/ block_dup_check($4, $5); $5->nd_iter = new_command_qcall($2, $1, $3, $4, &@1); $$ = $5; fixpos($$, $1); /*% $$ = dispatch4(command_call, $1, $2, $3, $4); $$ = method_add_block($$, $5); %*/ } ; method_call : fcall paren_args { /*%%%*/ $$ = $1; $$->nd_args = $2; /*% $$ = method_arg(dispatch1(fcall, $1), $2); %*/ } | primary_value call_op operation2 { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } opt_paren_args { $$ = new_qcall($2, $1, $3, $5, &@1); nd_set_line($$, $4); } | primary_value tCOLON2 operation2 { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } paren_args { $$ = new_qcall(ID2VAL(idCOLON2), $1, $3, $5, &@1); nd_set_line($$, $4); } | primary_value tCOLON2 operation3 { $$ = new_qcall(ID2VAL(idCOLON2), $1, $3, Qnull, &@1); } | primary_value call_op { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } paren_args { $$ = new_qcall($2, $1, ID2VAL(idCall), $4, &@1); nd_set_line($$, $3); } | primary_value tCOLON2 { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } paren_args { $$ = new_qcall(ID2VAL(idCOLON2), $1, ID2VAL(idCall), $4, &@1); nd_set_line($$, $3); } | keyword_super paren_args { /*%%%*/ $$ = NEW_SUPER($2); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(super, $2); %*/ } | keyword_super { /*%%%*/ $$ = NEW_ZSUPER(); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch0(zsuper); %*/ } | primary_value '[' opt_call_args rbracket { /*%%%*/ if ($1 && nd_type($1) == NODE_SELF) $$ = new_fcall(tAREF, $3, &@1); else $$ = new_call($1, tAREF, $3, &@1); fixpos($$, $1); /*% $$ = dispatch2(aref, $1, escape_Qundef($3)); %*/ } ; brace_block : '{' { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } brace_body '}' { $$ = $3; /*%%%*/ nd_set_line($$, $2); /*% %*/ } | keyword_do { /*%%%*/ $$ = ruby_sourceline; /*% %*/ } do_body keyword_end { $$ = $3; /*%%%*/ nd_set_line($$, $2); /*% %*/ } ; brace_body : {$$ = dyna_push();} {$$ = cmdarg_stack >> 1; CMDARG_SET(0);} opt_block_param compstmt { $$ = new_brace_body($3, $4, &@1); dyna_pop($1); CMDARG_SET($2); } ; do_body : {$$ = dyna_push();} {$$ = cmdarg_stack; CMDARG_SET(0);} opt_block_param bodystmt { $$ = new_do_body($3, $4, &@1); dyna_pop($1); CMDARG_SET($2); } ; case_body : keyword_when args then compstmt cases { /*%%%*/ $$ = NEW_WHEN($2, $4, $5); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch3(when, $2, $4, escape_Qundef($5)); %*/ } ; cases : opt_else | case_body ; opt_rescue : keyword_rescue exc_list exc_var then compstmt opt_rescue { /*%%%*/ if ($3) { $3 = node_assign($3, new_errinfo(&@1), &@1); $5 = block_append($3, $5, &@1); } $$ = new_resbody($2, $5, $6, &@1); fixpos($$, $2?$2:$5); /*% $$ = dispatch4(rescue, escape_Qundef($2), escape_Qundef($3), escape_Qundef($5), escape_Qundef($6)); %*/ } | none ; exc_list : arg_value { /*%%%*/ $$ = new_list($1, &@1); /*% $$ = rb_ary_new3(1, get_value($1)); %*/ } | mrhs { /*%%%*/ if (!($$ = splat_array($1))) $$ = $1; /*% $$ = $1; %*/ } | none ; exc_var : tASSOC lhs { $$ = $2; } | none ; opt_ensure : keyword_ensure compstmt { /*%%%*/ $$ = $2; /*% $$ = dispatch1(ensure, $2); %*/ } | none ; literal : numeric | symbol { /*%%%*/ $$ = new_lit(ID2SYM($1), &@1); /*% $$ = dispatch1(symbol_literal, $1); %*/ } | dsym ; strings : string { /*%%%*/ NODE *node = $1; if (!node) { node = new_str(STR_NEW0(), &@1); } else { node = evstr2dstr(node, &@1); } $$ = node; /*% $$ = $1; %*/ } ; string : tCHAR { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } | string1 | string string1 { /*%%%*/ $$ = literal_concat($1, $2, &@1); /*% $$ = dispatch2(string_concat, $1, $2); %*/ } ; string1 : tSTRING_BEG string_contents tSTRING_END { $$ = new_string1(heredoc_dedent($2)); } ; xstring : tXSTRING_BEG xstring_contents tSTRING_END { $$ = new_xstring(heredoc_dedent($2), &@1); } ; regexp : tREGEXP_BEG regexp_contents tREGEXP_END { $$ = new_regexp($2, $3, &@1); } ; words : tWORDS_BEG ' ' tSTRING_END { /*%%%*/ $$ = new_zarray(&@1); /*% $$ = dispatch0(words_new); $$ = dispatch1(array, $$); %*/ } | tWORDS_BEG word_list tSTRING_END { /*%%%*/ $$ = $2; /*% $$ = dispatch1(array, $2); %*/ } ; word_list : /* none */ { /*%%%*/ $$ = 0; /*% $$ = dispatch0(words_new); %*/ } | word_list word ' ' { /*%%%*/ $$ = list_append($1, evstr2dstr($2, &@1), &@1); /*% $$ = dispatch2(words_add, $1, $2); %*/ } ; word : string_content /*%c%*/ /*%c { $$ = dispatch0(word_new); $$ = dispatch2(word_add, $$, $1); } %*/ | word string_content { /*%%%*/ $$ = literal_concat($1, $2, &@1); /*% $$ = dispatch2(word_add, $1, $2); %*/ } ; symbols : tSYMBOLS_BEG ' ' tSTRING_END { /*%%%*/ $$ = new_zarray(&@1); /*% $$ = dispatch0(symbols_new); $$ = dispatch1(array, $$); %*/ } | tSYMBOLS_BEG symbol_list tSTRING_END { /*%%%*/ $$ = $2; /*% $$ = dispatch1(array, $2); %*/ } ; symbol_list : /* none */ { /*%%%*/ $$ = 0; /*% $$ = dispatch0(symbols_new); %*/ } | symbol_list word ' ' { /*%%%*/ $2 = evstr2dstr($2, &@1); if (nd_type($2) == NODE_DSTR) { nd_set_type($2, NODE_DSYM); } else { nd_set_type($2, NODE_LIT); add_mark_object($2->nd_lit = rb_str_intern($2->nd_lit)); } $$ = list_append($1, $2, &@1); /*% $$ = dispatch2(symbols_add, $1, $2); %*/ } ; qwords : tQWORDS_BEG ' ' tSTRING_END { /*%%%*/ $$ = new_zarray(&@1); /*% $$ = dispatch0(qwords_new); $$ = dispatch1(array, $$); %*/ } | tQWORDS_BEG qword_list tSTRING_END { /*%%%*/ $$ = $2; /*% $$ = dispatch1(array, $2); %*/ } ; qsymbols : tQSYMBOLS_BEG ' ' tSTRING_END { /*%%%*/ $$ = new_zarray(&@1); /*% $$ = dispatch0(qsymbols_new); $$ = dispatch1(array, $$); %*/ } | tQSYMBOLS_BEG qsym_list tSTRING_END { /*%%%*/ $$ = $2; /*% $$ = dispatch1(array, $2); %*/ } ; qword_list : /* none */ { /*%%%*/ $$ = 0; /*% $$ = dispatch0(qwords_new); %*/ } | qword_list tSTRING_CONTENT ' ' { /*%%%*/ $$ = list_append($1, $2, &@1); nd_set_lineno($2, @1.first_line); nd_set_column($2, @1.first_column); /*% $$ = dispatch2(qwords_add, $1, $2); %*/ } ; qsym_list : /* none */ { /*%%%*/ $$ = 0; /*% $$ = dispatch0(qsymbols_new); %*/ } | qsym_list tSTRING_CONTENT ' ' { /*%%%*/ VALUE lit; lit = $2->nd_lit; nd_set_type($2, NODE_LIT); add_mark_object($2->nd_lit = ID2SYM(rb_intern_str(lit))); $$ = list_append($1, $2, &@1); nd_set_lineno($2, @1.first_line); nd_set_column($2, @1.first_column); /*% $$ = dispatch2(qsymbols_add, $1, $2); %*/ } ; string_contents : /* none */ { /*%%%*/ $$ = 0; /*% $$ = dispatch0(string_content); %*/ } | string_contents string_content { /*%%%*/ $$ = literal_concat($1, $2, &@1); /*% $$ = dispatch2(string_add, $1, $2); %*/ } ; xstring_contents: /* none */ { /*%%%*/ $$ = 0; /*% $$ = dispatch0(xstring_new); %*/ } | xstring_contents string_content { /*%%%*/ $$ = literal_concat($1, $2, &@1); /*% $$ = dispatch2(xstring_add, $1, $2); %*/ } ; regexp_contents: /* none */ { /*%%%*/ $$ = 0; /*% $$ = ripper_new_yylval(0, dispatch0(regexp_new), 0); %*/ } | regexp_contents string_content { /*%%%*/ NODE *head = $1, *tail = $2; if (!head) { $$ = tail; } else if (!tail) { $$ = head; } else { switch (nd_type(head)) { case NODE_STR: nd_set_type(head, NODE_DSTR); break; case NODE_DSTR: break; default: head = list_append(new_dstr(Qnil, &@1), head, &@1); break; } $$ = list_append(head, tail, &@1); } /*% VALUE s1 = 1, s2 = 0, n1 = $1, n2 = $2; if (ripper_is_node_yylval(n1)) { s1 = RNODE(n1)->nd_cval; n1 = RNODE(n1)->nd_rval; } if (ripper_is_node_yylval(n2)) { s2 = RNODE(n2)->nd_cval; n2 = RNODE(n2)->nd_rval; } $$ = dispatch2(regexp_add, n1, n2); if (!s1 && s2) { $$ = ripper_new_yylval(0, $$, s2); } %*/ } ; string_content : tSTRING_CONTENT { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } | tSTRING_DVAR { /* need to backup lex_stream so that a string literal `%&foo,#$&,bar&` can be parsed */ $$ = lex_strterm; lex_strterm = 0; SET_LEX_STATE(EXPR_BEG); } string_dvar { lex_strterm = $2; /*%%%*/ $$ = NEW_EVSTR($3); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(string_dvar, $3); %*/ } | tSTRING_DBEG { $1 = cond_stack; $$ = cmdarg_stack; COND_SET(0); CMDARG_SET(0); } { /* need to backup lex_stream so that a string literal `%!foo,#{ !0 },bar!` can be parsed */ $$ = lex_strterm; lex_strterm = 0; } { $$ = lex_state; SET_LEX_STATE(EXPR_BEG); } { $$ = brace_nest; brace_nest = 0; } { $$ = heredoc_indent; heredoc_indent = 0; } compstmt tSTRING_DEND { COND_SET($1); CMDARG_SET($2); lex_strterm = $3; SET_LEX_STATE($4); brace_nest = $5; heredoc_indent = $6; heredoc_line_indent = -1; /*%%%*/ if ($7) $7->flags &= ~NODE_FL_NEWLINE; $$ = new_evstr($7, &@1); /*% $$ = dispatch1(string_embexpr, $7); %*/ } ; string_dvar : tGVAR { /*%%%*/ $$ = new_gvar($1, &@1); /*% $$ = dispatch1(var_ref, $1); %*/ } | tIVAR { /*%%%*/ $$ = new_ivar($1, &@1); /*% $$ = dispatch1(var_ref, $1); %*/ } | tCVAR { /*%%%*/ $$ = NEW_CVAR($1); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = dispatch1(var_ref, $1); %*/ } | backref ; symbol : tSYMBEG sym { SET_LEX_STATE(EXPR_END|EXPR_ENDARG); /*%%%*/ $$ = $2; /*% $$ = dispatch1(symbol, $2); %*/ } ; sym : fname | tIVAR | tGVAR | tCVAR ; dsym : tSYMBEG xstring_contents tSTRING_END { SET_LEX_STATE(EXPR_END|EXPR_ENDARG); /*%%%*/ $$ = dsym_node($2, &@1); /*% $$ = dispatch1(dyna_symbol, $2); %*/ } ; numeric : simple_numeric | tUMINUS_NUM simple_numeric %prec tLOWEST { /*%%%*/ $$ = $2; add_mark_object($$->nd_lit = negate_lit($$->nd_lit)); /*% $$ = dispatch2(unary, ID2VAL(idUMinus), $2); %*/ } ; simple_numeric : tINTEGER { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } | tFLOAT { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } | tRATIONAL { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } | tIMAGINARY { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } ; user_variable : tIDENTIFIER | tIVAR | tGVAR | tCONSTANT | tCVAR ; keyword_variable: keyword_nil {$$ = KWD2EID(nil, $1);} | keyword_self {$$ = KWD2EID(self, $1);} | keyword_true {$$ = KWD2EID(true, $1);} | keyword_false {$$ = KWD2EID(false, $1);} | keyword__FILE__ {$$ = KWD2EID(_FILE__, $1);} | keyword__LINE__ {$$ = KWD2EID(_LINE__, $1);} | keyword__ENCODING__ {$$ = KWD2EID(_ENCODING__, $1);} ; var_ref : user_variable { /*%%%*/ if (!($$ = gettable($1, &@1))) $$ = new_begin(0, &@1); /*% if (id_is_var(get_id($1))) { $$ = dispatch1(var_ref, $1); } else { $$ = dispatch1(vcall, $1); } %*/ } | keyword_variable { /*%%%*/ if (!($$ = gettable($1, &@1))) $$ = new_begin(0, &@1); /*% $$ = dispatch1(var_ref, $1); %*/ } ; var_lhs : user_variable { $$ = assignable(var_field($1), 0, &@1); } | keyword_variable { $$ = assignable(var_field($1), 0, &@1); } ; backref : tNTH_REF { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } | tBACK_REF { /*%%%*/ nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% %*/ } ; superclass : '<' { SET_LEX_STATE(EXPR_BEG); command_start = TRUE; } expr_value term { $$ = $3; } | /* none */ { /*%%%*/ $$ = 0; /*% $$ = Qnil; %*/ } ; f_arglist : '(' f_args rparen { /*%%%*/ $$ = $2; /*% $$ = dispatch1(paren, $2); %*/ SET_LEX_STATE(EXPR_BEG); command_start = TRUE; } | { $$ = parser->in_kwarg; parser->in_kwarg = 1; SET_LEX_STATE(lex_state|EXPR_LABEL); /* force for args */ } f_args term { parser->in_kwarg = !!$1; $$ = $2; SET_LEX_STATE(EXPR_BEG); command_start = TRUE; } ; args_tail : f_kwarg ',' f_kwrest opt_f_block_arg { $$ = new_args_tail($1, $3, $4, &@1); } | f_kwarg opt_f_block_arg { $$ = new_args_tail($1, Qnone, $2, &@1); } | f_kwrest opt_f_block_arg { $$ = new_args_tail(Qnone, $1, $2, &@1); } | f_block_arg { $$ = new_args_tail(Qnone, Qnone, $1, &@1); } ; opt_args_tail : ',' args_tail { $$ = $2; } | /* none */ { $$ = new_args_tail(Qnone, Qnone, Qnone, &@0); } ; f_args : f_arg ',' f_optarg ',' f_rest_arg opt_args_tail { $$ = new_args($1, $3, $5, Qnone, $6); } | f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_args_tail { $$ = new_args($1, $3, $5, $7, $8); } | f_arg ',' f_optarg opt_args_tail { $$ = new_args($1, $3, Qnone, Qnone, $4); } | f_arg ',' f_optarg ',' f_arg opt_args_tail { $$ = new_args($1, $3, Qnone, $5, $6); } | f_arg ',' f_rest_arg opt_args_tail { $$ = new_args($1, Qnone, $3, Qnone, $4); } | f_arg ',' f_rest_arg ',' f_arg opt_args_tail { $$ = new_args($1, Qnone, $3, $5, $6); } | f_arg opt_args_tail { $$ = new_args($1, Qnone, Qnone, Qnone, $2); } | f_optarg ',' f_rest_arg opt_args_tail { $$ = new_args(Qnone, $1, $3, Qnone, $4); } | f_optarg ',' f_rest_arg ',' f_arg opt_args_tail { $$ = new_args(Qnone, $1, $3, $5, $6); } | f_optarg opt_args_tail { $$ = new_args(Qnone, $1, Qnone, Qnone, $2); } | f_optarg ',' f_arg opt_args_tail { $$ = new_args(Qnone, $1, Qnone, $3, $4); } | f_rest_arg opt_args_tail { $$ = new_args(Qnone, Qnone, $1, Qnone, $2); } | f_rest_arg ',' f_arg opt_args_tail { $$ = new_args(Qnone, Qnone, $1, $3, $4); } | args_tail { $$ = new_args(Qnone, Qnone, Qnone, Qnone, $1); } | /* none */ { $$ = new_args_tail(Qnone, Qnone, Qnone, &@0); $$ = new_args(Qnone, Qnone, Qnone, Qnone, $$); } ; f_bad_arg : tCONSTANT { /*%%%*/ yyerror0("formal argument cannot be a constant"); $$ = 0; /*% $$ = dispatch1(param_error, $1); ripper_error(); %*/ } | tIVAR { /*%%%*/ yyerror0("formal argument cannot be an instance variable"); $$ = 0; /*% $$ = dispatch1(param_error, $1); ripper_error(); %*/ } | tGVAR { /*%%%*/ yyerror0("formal argument cannot be a global variable"); $$ = 0; /*% $$ = dispatch1(param_error, $1); ripper_error(); %*/ } | tCVAR { /*%%%*/ yyerror0("formal argument cannot be a class variable"); $$ = 0; /*% $$ = dispatch1(param_error, $1); ripper_error(); %*/ } ; f_norm_arg : f_bad_arg | tIDENTIFIER { formal_argument(get_id($1)); $$ = $1; } ; f_arg_asgn : f_norm_arg { ID id = get_id($1); arg_var(id); current_arg = id; $$ = $1; } ; f_arg_item : f_arg_asgn { current_arg = 0; /*%%%*/ $$ = NEW_ARGS_AUX($1, 1); /*% $$ = get_value($1); %*/ } | tLPAREN f_margs rparen { ID tid = internal_id(); arg_var(tid); /*%%%*/ if (dyna_in_block()) { $2->nd_value = new_dvar(tid, &@1); } else { $2->nd_value = new_lvar(tid, &@1); } $$ = NEW_ARGS_AUX(tid, 1); $$->nd_next = $2; /*% $$ = dispatch1(mlhs_paren, $2); %*/ } ; f_arg : f_arg_item /*%c%*/ /*%c { $$ = rb_ary_new3(1, get_value($1)); } c%*/ | f_arg ',' f_arg_item { /*%%%*/ $$ = $1; $$->nd_plen++; $$->nd_next = block_append($$->nd_next, $3->nd_next, &@1); rb_discard_node($3); /*% $$ = rb_ary_push($1, get_value($3)); %*/ } ; f_label : tLABEL { ID id = get_id($1); arg_var(formal_argument(id)); current_arg = id; $$ = $1; } ; f_kw : f_label arg_value { current_arg = 0; $$ = assignable($1, $2, &@1); /*%%%*/ $$ = new_kw_arg($$, &@1); /*% $$ = rb_assoc_new(get_value($$), get_value($2)); %*/ } | f_label { current_arg = 0; $$ = assignable($1, NODE_SPECIAL_REQUIRED_KEYWORD, &@1); /*%%%*/ $$ = new_kw_arg($$, &@1); /*% $$ = rb_assoc_new(get_value($$), 0); %*/ } ; f_block_kw : f_label primary_value { $$ = assignable($1, $2, &@1); /*%%%*/ $$ = new_kw_arg($$, &@1); /*% $$ = rb_assoc_new(get_value($$), get_value($2)); %*/ } | f_label { $$ = assignable($1, NODE_SPECIAL_REQUIRED_KEYWORD, &@1); /*%%%*/ $$ = new_kw_arg($$, &@1); /*% $$ = rb_assoc_new(get_value($$), 0); %*/ } ; f_block_kwarg : f_block_kw { /*%%%*/ $$ = $1; /*% $$ = rb_ary_new3(1, get_value($1)); %*/ } | f_block_kwarg ',' f_block_kw { /*%%%*/ $$ = kwd_append($1, $3); /*% $$ = rb_ary_push($1, get_value($3)); %*/ } ; f_kwarg : f_kw { /*%%%*/ $$ = $1; /*% $$ = rb_ary_new3(1, get_value($1)); %*/ } | f_kwarg ',' f_kw { /*%%%*/ $$ = kwd_append($1, $3); /*% $$ = rb_ary_push($1, get_value($3)); %*/ } ; kwrest_mark : tPOW | tDSTAR ; f_kwrest : kwrest_mark tIDENTIFIER { shadowing_lvar(get_id($2)); /*%%%*/ $$ = $2; /*% $$ = dispatch1(kwrest_param, $2); %*/ } | kwrest_mark { /*%%%*/ $$ = internal_id(); arg_var($$); /*% $$ = dispatch1(kwrest_param, Qnil); %*/ } ; f_opt : f_arg_asgn '=' arg_value { current_arg = 0; $$ = assignable($1, $3, &@1); /*%%%*/ $$ = NEW_OPT_ARG(0, $$); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = rb_assoc_new(get_value($$), get_value($3)); %*/ } ; f_block_opt : f_arg_asgn '=' primary_value { current_arg = 0; $$ = assignable($1, $3, &@1); /*%%%*/ $$ = NEW_OPT_ARG(0, $$); nd_set_lineno($$, @1.first_line); nd_set_column($$, @1.first_column); /*% $$ = rb_assoc_new(get_value($$), get_value($3)); %*/ } ; f_block_optarg : f_block_opt { /*%%%*/ $$ = $1; /*% $$ = rb_ary_new3(1, get_value($1)); %*/ } | f_block_optarg ',' f_block_opt { /*%%%*/ NODE *opts = $1; while (opts->nd_next) { opts = opts->nd_next; } opts->nd_next = $3; $$ = $1; /*% $$ = rb_ary_push($1, get_value($3)); %*/ } ; f_optarg : f_opt { /*%%%*/ $$ = $1; /*% $$ = rb_ary_new3(1, get_value($1)); %*/ } | f_optarg ',' f_opt { /*%%%*/ NODE *opts = $1; while (opts->nd_next) { opts = opts->nd_next; } opts->nd_next = $3; $$ = $1; /*% $$ = rb_ary_push($1, get_value($3)); %*/ } ; restarg_mark : '*' | tSTAR ; f_rest_arg : restarg_mark tIDENTIFIER { /*%%%*/ if (!is_local_id($2)) yyerror0("rest argument must be local variable"); /*% %*/ arg_var(shadowing_lvar(get_id($2))); /*%%%*/ $$ = $2; /*% $$ = dispatch1(rest_param, $2); %*/ } | restarg_mark { /*%%%*/ $$ = internal_id(); arg_var($$); /*% $$ = dispatch1(rest_param, Qnil); %*/ } ; blkarg_mark : '&' | tAMPER ; f_block_arg : blkarg_mark tIDENTIFIER { /*%%%*/ if (!is_local_id($2)) yyerror0("block argument must be local variable"); else if (!dyna_in_block() && local_id($2)) yyerror0("duplicated block argument name"); /*% %*/ arg_var(shadowing_lvar(get_id($2))); /*%%%*/ $$ = $2; /*% $$ = dispatch1(blockarg, $2); %*/ } ; opt_f_block_arg : ',' f_block_arg { $$ = $2; } | none { /*%%%*/ $$ = 0; /*% $$ = Qundef; %*/ } ; singleton : var_ref { /*%%%*/ value_expr($1); $$ = $1; if (!$$) $$ = NEW_NIL(); /*% $$ = $1; %*/ } | '(' {SET_LEX_STATE(EXPR_BEG);} expr rparen { /*%%%*/ if ($3 == 0) { yyerror0("can't define singleton method for ()."); } else { switch (nd_type($3)) { case NODE_STR: case NODE_DSTR: case NODE_XSTR: case NODE_DXSTR: case NODE_DREGX: case NODE_LIT: case NODE_ARRAY: case NODE_ZARRAY: yyerror0("can't define singleton method for literals"); break; default: value_expr($3); break; } } $$ = $3; /*% $$ = dispatch1(paren, $3); %*/ } ; assoc_list : none | assocs trailer { /*%%%*/ $$ = $1; /*% $$ = dispatch1(assoclist_from_args, $1); %*/ } ; assocs : assoc /*%c%*/ /*%c { $$ = rb_ary_new3(1, get_value($1)); } %*/ | assocs ',' assoc { /*%%%*/ NODE *assocs = $1; NODE *tail = $3; if (!assocs) { assocs = tail; } else if (tail) { if (assocs->nd_head && !tail->nd_head && nd_type(tail->nd_next) == NODE_ARRAY && nd_type(tail->nd_next->nd_head) == NODE_HASH) { /* DSTAR */ tail = tail->nd_next->nd_head->nd_head; } assocs = list_concat(assocs, tail); } $$ = assocs; /*% $$ = rb_ary_push($1, get_value($3)); %*/ } ; assoc : arg_value tASSOC arg_value { /*%%%*/ if (nd_type($1) == NODE_STR) { nd_set_type($1, NODE_LIT); add_mark_object($1->nd_lit = rb_fstring($1->nd_lit)); } $$ = list_append(new_list($1, &@1), $3, &@1); /*% $$ = dispatch2(assoc_new, $1, $3); %*/ } | tLABEL arg_value { /*%%%*/ $$ = list_append(new_list(new_lit(ID2SYM($1), &@1), &@1), $2, &@1); /*% $$ = dispatch2(assoc_new, $1, $2); %*/ } | tSTRING_BEG string_contents tLABEL_END arg_value { /*%%%*/ $$ = list_append(new_list(dsym_node($2, &@1), &@1), $4, &@1); /*% $$ = dispatch2(assoc_new, dispatch1(dyna_symbol, $2), $4); %*/ } | tDSTAR arg_value { /*%%%*/ if (nd_type($2) == NODE_HASH && !($2->nd_head && $2->nd_head->nd_alen)) $$ = 0; else $$ = list_append(new_list(0, &@1), $2, &@1); /*% $$ = dispatch1(assoc_splat, $2); %*/ } ; operation : tIDENTIFIER | tCONSTANT | tFID ; operation2 : tIDENTIFIER | tCONSTANT | tFID | op ; operation3 : tIDENTIFIER | tFID | op ; dot_or_colon : '.' | tCOLON2 ; call_op : '.' { $$ = TOKEN2VAL('.'); } | tANDDOT { $$ = ID2VAL(idANDDOT); } ; call_op2 : call_op | tCOLON2 { $$ = ID2VAL(idCOLON2); } ; opt_terms : /* none */ | terms ; opt_nl : /* none */ | '\n' ; rparen : opt_nl ')' ; rbracket : opt_nl ']' ; trailer : /* none */ | '\n' | ',' ; term : ';' {yyerrok;token_flush(parser);} | '\n' {token_flush(parser);} ; terms : term | terms ';' {yyerrok;} ; none : /* none */ { $$ = Qnull; } ; %% # undef parser # undef yylex # undef yylval # define yylval (*parser->lval) static int parser_regx_options(struct parser_params*); static int parser_tokadd_string(struct parser_params*,int,int,int,long*,rb_encoding**); static void parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc); static enum yytokentype parser_parse_string(struct parser_params*,rb_strterm_literal_t*); static enum yytokentype parser_here_document(struct parser_params*,rb_strterm_heredoc_t*); # define nextc() parser_nextc(parser) # define pushback(c) parser_pushback(parser, (c)) # define newtok() parser_newtok(parser) # define tokspace(n) parser_tokspace(parser, (n)) # define tokadd(c) parser_tokadd(parser, (c)) # define tok_hex(numlen) parser_tok_hex(parser, (numlen)) # define read_escape(flags,e) parser_read_escape(parser, (flags), (e)) # define tokadd_escape(e) parser_tokadd_escape(parser, (e)) # define regx_options() parser_regx_options(parser) # define tokadd_string(f,t,p,n,e) parser_tokadd_string(parser,(f),(t),(p),(n),(e)) # define parse_string(n) parser_parse_string(parser,(n)) # define tokaddmbc(c, enc) parser_tokaddmbc(parser, (c), (enc)) # define here_document(n) parser_here_document(parser,(n)) # define heredoc_identifier() parser_heredoc_identifier(parser) # define heredoc_restore(n) parser_heredoc_restore(parser,(n)) # define whole_match_p(e,l,i) parser_whole_match_p(parser,(e),(l),(i)) # define number_literal_suffix(f) parser_number_literal_suffix(parser, (f)) # define set_number_literal(v, t, f) parser_set_number_literal(parser, (v), (t), (f)) # define set_integer_literal(v, f) parser_set_integer_literal(parser, (v), (f)) #ifndef RIPPER # define set_yylval_str(x) (yylval.node = NEW_STR(x)) # define set_yylval_num(x) (yylval.num = (x)) # define set_yylval_id(x) (yylval.id = (x)) # define set_yylval_name(x) (yylval.id = (x)) # define set_yylval_literal(x) (yylval.node = NEW_LIT(x)) # define set_yylval_node(x) (yylval.node = (x)) # define yylval_id() (yylval.id) #else static inline VALUE ripper_yylval_id_gen(struct parser_params *parser, ID x) { return ripper_new_yylval(x, ID2SYM(x), 0); } #define ripper_yylval_id(x) ripper_yylval_id_gen(parser, x) # define set_yylval_str(x) (yylval.val = (x)) # define set_yylval_num(x) (yylval.val = ripper_new_yylval((x), 0, 0)) # define set_yylval_id(x) (void)(x) # define set_yylval_name(x) (void)(yylval.val = ripper_yylval_id(x)) # define set_yylval_literal(x) (void)(x) # define set_yylval_node(x) (void)(x) # define yylval_id() yylval.id #endif #ifndef RIPPER #define literal_flush(p) (parser->tokp = (p)) #define dispatch_scan_event(t) ((void)0) #define dispatch_delayed_token(t) ((void)0) #define has_delayed_token() (0) #else #define literal_flush(p) ((void)0) #define yylval_rval (*(RB_TYPE_P(yylval.val, T_NODE) ? &yylval.node->nd_rval : &yylval.val)) static inline VALUE intern_sym(const char *name) { ID id = rb_intern_const(name); return ID2SYM(id); } static int ripper_has_scan_event(struct parser_params *parser) { if (lex_p < parser->tokp) rb_raise(rb_eRuntimeError, "lex_p < tokp"); return lex_p > parser->tokp; } static VALUE ripper_scan_event_val(struct parser_params *parser, int t) { VALUE str = STR_NEW(parser->tokp, lex_p - parser->tokp); VALUE rval = ripper_dispatch1(parser, ripper_token2eventid(t), str); token_flush(parser); return rval; } static void ripper_dispatch_scan_event(struct parser_params *parser, int t) { if (!ripper_has_scan_event(parser)) return; add_mark_object(yylval_rval = ripper_scan_event_val(parser, t)); } #define dispatch_scan_event(t) ripper_dispatch_scan_event(parser, t) static void ripper_dispatch_delayed_token(struct parser_params *parser, int t) { int saved_line = ruby_sourceline; const char *saved_tokp = parser->tokp; ruby_sourceline = parser->delayed_line; parser->tokp = lex_pbeg + parser->delayed_col; add_mark_object(yylval_rval = ripper_dispatch1(parser, ripper_token2eventid(t), parser->delayed)); parser->delayed = Qnil; ruby_sourceline = saved_line; parser->tokp = saved_tokp; } #define dispatch_delayed_token(t) ripper_dispatch_delayed_token(parser, t) #define has_delayed_token() (!NIL_P(parser->delayed)) #endif /* RIPPER */ #include "ruby/regex.h" #include "ruby/util.h" #define parser_encoding_name() (current_enc->name) #define parser_mbclen() mbclen((lex_p-1),lex_pend,current_enc) #define is_identchar(p,e,enc) (rb_enc_isalnum((unsigned char)(*(p)),(enc)) || (*(p)) == '_' || !ISASCII(*(p))) #define parser_is_identchar() (!parser->eofp && is_identchar((lex_p-1),lex_pend,current_enc)) #define parser_isascii() ISASCII(*(lex_p-1)) static int token_info_get_column(struct parser_params *parser, const char *pend) { int column = 1; const char *p; for (p = lex_pbeg; p < pend; p++) { if (*p == '\t') { column = (((column - 1) / TAB_WIDTH) + 1) * TAB_WIDTH; } column++; } return column; } static int token_info_has_nonspaces(struct parser_params *parser, const char *pend) { const char *p; for (p = lex_pbeg; p < pend; p++) { if (*p != ' ' && *p != '\t') { return 1; } } return 0; } static void token_info_push_gen(struct parser_params *parser, const char *token, size_t len) { token_info *ptinfo; const char *t = lex_p - len; if (!parser->token_info_enabled) return; ptinfo = ALLOC(token_info); ptinfo->token = token; ptinfo->linenum = ruby_sourceline; ptinfo->column = token_info_get_column(parser, t); ptinfo->nonspc = token_info_has_nonspaces(parser, t); ptinfo->next = parser->token_info; parser->token_info = ptinfo; } static void token_info_pop_gen(struct parser_params *parser, const char *token, size_t len) { int linenum; token_info *ptinfo = parser->token_info; const char *t = lex_p - len; if (!ptinfo) return; parser->token_info = ptinfo->next; linenum = ruby_sourceline; if (parser->token_info_enabled && linenum != ptinfo->linenum && !ptinfo->nonspc && !token_info_has_nonspaces(parser, t) && token_info_get_column(parser, t) != ptinfo->column) { rb_warn3L(linenum, "mismatched indentations at '%s' with '%s' at %d", WARN_S(token), WARN_S(ptinfo->token), WARN_I(ptinfo->linenum)); } xfree(ptinfo); } static int parser_precise_mbclen(struct parser_params *parser, const char *p) { int len = rb_enc_precise_mbclen(p, lex_pend, current_enc); if (!MBCLEN_CHARFOUND_P(len)) { compile_error(PARSER_ARG "invalid multibyte char (%s)", parser_encoding_name()); return -1; } return len; } static int parser_yyerror(struct parser_params *parser, const char *msg) { #ifndef RIPPER const int max_line_margin = 30; const char *p, *pe; const char *pre = "", *post = "", *pend; const char *code = "", *caret = "", *newline = ""; const char *lim; char *buf; long len; int i; pend = lex_pend; if (pend > lex_pbeg && pend[-1] == '\n') { if (--pend > lex_pbeg && pend[-1] == '\r') --pend; } p = pe = lex_p < pend ? lex_p : pend; lim = p - lex_pbeg > max_line_margin ? p - max_line_margin : lex_pbeg; while ((lim < p) && (*(p-1) != '\n')) p--; lim = pend - pe > max_line_margin ? pe + max_line_margin : pend; while ((pe < lim) && (*pe != '\n')) pe++; len = pe - p; if (len > 4) { char *p2; if (p > lex_pbeg) { p = rb_enc_prev_char(lex_pbeg, p, lex_p, rb_enc_get(lex_lastline)); if (p > lex_pbeg) pre = "..."; } if (pe < pend) { pe = rb_enc_prev_char(lex_p, pe, pend, rb_enc_get(lex_lastline)); if (pe < pend) post = "..."; } len = pe - p; lim = lex_p < pend ? lex_p : pend; i = (int)(lim - p); buf = ALLOCA_N(char, i+2); code = p; caret = p2 = buf; pe = (parser->tokp < lim ? parser->tokp : lim); if (p <= pe) { while (p < pe) { *p2++ = *p++ == '\t' ? '\t' : ' '; } *p2++ = '^'; p++; } if (lim > p) { memset(p2, '~', (lim - p)); p2 += (lim - p); } *p2 = '\0'; newline = "\n"; } else { len = 0; } compile_error(PARSER_ARG "%s%s""%s%.*s%s%s""%s%s", msg, newline, pre, (int)len, code, post, newline, pre, caret); #else dispatch1(parse_error, STR_NEW2(msg)); ripper_error(); #endif /* !RIPPER */ return 0; } static int vtable_size(const struct vtable *tbl) { if (POINTER_P(tbl)) { return tbl->pos; } else { return 0; } } static struct vtable * vtable_alloc_gen(struct parser_params *parser, int line, struct vtable *prev) { struct vtable *tbl = ALLOC(struct vtable); tbl->pos = 0; tbl->capa = 8; tbl->tbl = ALLOC_N(ID, tbl->capa); tbl->prev = prev; #ifndef RIPPER if (yydebug) { rb_parser_printf(parser, "vtable_alloc:%d: %p\n", line, tbl); } #endif return tbl; } #define vtable_alloc(prev) vtable_alloc_gen(parser, __LINE__, prev) static void vtable_free_gen(struct parser_params *parser, int line, const char *name, struct vtable *tbl) { #ifndef RIPPER if (yydebug) { rb_parser_printf(parser, "vtable_free:%d: %s(%p)\n", line, name, tbl); } #endif if (POINTER_P(tbl)) { if (tbl->tbl) { xfree(tbl->tbl); } xfree(tbl); } } #define vtable_free(tbl) vtable_free_gen(parser, __LINE__, #tbl, tbl) static void vtable_add_gen(struct parser_params *parser, int line, const char *name, struct vtable *tbl, ID id) { #ifndef RIPPER if (yydebug) { rb_parser_printf(parser, "vtable_add:%d: %s(%p), %s\n", line, name, tbl, rb_id2name(id)); } #endif if (!POINTER_P(tbl)) { rb_parser_fatal(parser, "vtable_add: vtable is not allocated (%p)", (void *)tbl); return; } if (tbl->pos == tbl->capa) { tbl->capa = tbl->capa * 2; REALLOC_N(tbl->tbl, ID, tbl->capa); } tbl->tbl[tbl->pos++] = id; } #define vtable_add(tbl, id) vtable_add_gen(parser, __LINE__, #tbl, tbl, id) #ifndef RIPPER static void vtable_pop_gen(struct parser_params *parser, int line, const char *name, struct vtable *tbl, int n) { if (yydebug) { rb_parser_printf(parser, "vtable_pop:%d: %s(%p), %d\n", line, name, tbl, n); } if (tbl->pos < n) { rb_parser_fatal(parser, "vtable_pop: unreachable (%d < %d)", tbl->pos, n); return; } tbl->pos -= n; } #define vtable_pop(tbl, n) vtable_pop_gen(parser, __LINE__, #tbl, tbl, n) #endif static int vtable_included(const struct vtable * tbl, ID id) { int i; if (POINTER_P(tbl)) { for (i = 0; i < tbl->pos; i++) { if (tbl->tbl[i] == id) { return i+1; } } } return 0; } static void parser_prepare(struct parser_params *parser); #ifndef RIPPER static NODE *parser_append_options(struct parser_params *parser, NODE *node); static VALUE debug_lines(VALUE fname) { ID script_lines; CONST_ID(script_lines, "SCRIPT_LINES__"); if (rb_const_defined_at(rb_cObject, script_lines)) { VALUE hash = rb_const_get_at(rb_cObject, script_lines); if (RB_TYPE_P(hash, T_HASH)) { VALUE lines = rb_ary_new(); rb_hash_aset(hash, fname, lines); return lines; } } return 0; } static VALUE coverage(VALUE fname, int n) { VALUE coverages = rb_get_coverages(); if (RTEST(coverages) && RBASIC(coverages)->klass == 0) { VALUE coverage = rb_default_coverage(n); VALUE lines = RARRAY_AREF(coverage, COVERAGE_INDEX_LINES); rb_hash_aset(coverages, fname, coverage); return lines == Qnil ? Qfalse : lines; } return 0; } static int e_option_supplied(struct parser_params *parser) { return strcmp(ruby_sourcefile, "-e") == 0; } static VALUE yycompile0(VALUE arg) { int n; NODE *tree; struct parser_params *parser = (struct parser_params *)arg; VALUE cov = Qfalse; if (!compile_for_eval && rb_safe_level() == 0) { ruby_debug_lines = debug_lines(ruby_sourcefile_string); if (ruby_debug_lines && ruby_sourceline > 0) { VALUE str = STR_NEW0(); n = ruby_sourceline; do { rb_ary_push(ruby_debug_lines, str); } while (--n); } if (!e_option_supplied(parser)) { ruby_coverage = coverage(ruby_sourcefile_string, ruby_sourceline); cov = Qtrue; } } parser_prepare(parser); #ifndef RIPPER #define RUBY_DTRACE_PARSE_HOOK(name) \ if (RUBY_DTRACE_PARSE_##name##_ENABLED()) { \ RUBY_DTRACE_PARSE_##name(ruby_sourcefile, ruby_sourceline); \ } RUBY_DTRACE_PARSE_HOOK(BEGIN); #endif n = yyparse((void*)parser); #ifndef RIPPER RUBY_DTRACE_PARSE_HOOK(END); #endif ruby_debug_lines = 0; ruby_coverage = 0; lex_strterm = 0; lex_p = lex_pbeg = lex_pend = 0; lex_lastline = lex_nextline = 0; if (parser->error_p) { VALUE mesg = parser->error_buffer; if (!mesg) { mesg = rb_class_new_instance(0, 0, rb_eSyntaxError); } rb_set_errinfo(mesg); return 0; } tree = ruby_eval_tree; if (!tree) { tree = NEW_NIL(); } else { VALUE opt = parser->compile_option; NODE *prelude; NODE *body = parser_append_options(parser, tree->nd_body); if (!opt) opt = rb_obj_hide(rb_ident_hash_new()); rb_hash_aset(opt, rb_sym_intern_ascii_cstr("coverage_enabled"), cov); prelude = NEW_PRELUDE(ruby_eval_tree_begin, body, opt); add_mark_object(opt); nd_set_lineno(prelude, nd_lineno(body)); nd_set_column(prelude, nd_column(body)); tree->nd_body = prelude; } return (VALUE)tree; } static NODE* yycompile(struct parser_params *parser, VALUE fname, int line) { ruby_sourcefile_string = rb_str_new_frozen(fname); ruby_sourcefile = RSTRING_PTR(fname); ruby_sourceline = line - 1; return (NODE *)rb_suppress_tracing(yycompile0, (VALUE)parser); } #endif /* !RIPPER */ static rb_encoding * must_be_ascii_compatible(VALUE s) { rb_encoding *enc = rb_enc_get(s); if (!rb_enc_asciicompat(enc)) { rb_raise(rb_eArgError, "invalid source encoding"); } return enc; } static VALUE lex_get_str(struct parser_params *parser, VALUE s) { char *beg, *end, *start; long len; beg = RSTRING_PTR(s); len = RSTRING_LEN(s); start = beg; if (lex_gets_ptr) { if (len == lex_gets_ptr) return Qnil; beg += lex_gets_ptr; len -= lex_gets_ptr; } end = memchr(beg, '\n', len); if (end) len = ++end - beg; lex_gets_ptr += len; return rb_str_subseq(s, beg - start, len); } static VALUE lex_getline(struct parser_params *parser) { VALUE line = (*lex_gets)(parser, lex_input); if (NIL_P(line)) return line; must_be_ascii_compatible(line); #ifndef RIPPER if (ruby_debug_lines) { rb_enc_associate(line, current_enc); rb_ary_push(ruby_debug_lines, line); } if (ruby_coverage) { rb_ary_push(ruby_coverage, Qnil); } #endif return line; } static const rb_data_type_t parser_data_type; #ifndef RIPPER static rb_ast_t* parser_compile_string(VALUE vparser, VALUE fname, VALUE s, int line) { struct parser_params *parser; rb_ast_t *ast; TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); parser->ast = ast = rb_ast_new(); lex_gets = lex_get_str; lex_gets_ptr = 0; lex_input = rb_str_new_frozen(s); lex_pbeg = lex_p = lex_pend = 0; ast->root = yycompile(parser, fname, line); parser->ast = 0; RB_GC_GUARD(vparser); /* prohibit tail call optimization */ return ast; } rb_ast_t* rb_compile_string(const char *f, VALUE s, int line) { must_be_ascii_compatible(s); return parser_compile_string(rb_parser_new(), rb_filesystem_str_new_cstr(f), s, line); } rb_ast_t* rb_parser_compile_string(VALUE vparser, const char *f, VALUE s, int line) { return rb_parser_compile_string_path(vparser, rb_filesystem_str_new_cstr(f), s, line); } rb_ast_t* rb_parser_compile_string_path(VALUE vparser, VALUE f, VALUE s, int line) { must_be_ascii_compatible(s); return parser_compile_string(vparser, f, s, line); } rb_ast_t* rb_compile_cstr(const char *f, const char *s, int len, int line) { VALUE str = rb_str_new(s, len); return parser_compile_string(rb_parser_new(), rb_filesystem_str_new_cstr(f), str, line); } rb_ast_t* rb_parser_compile_cstr(VALUE vparser, const char *f, const char *s, int len, int line) { VALUE str = rb_str_new(s, len); return parser_compile_string(vparser, rb_filesystem_str_new_cstr(f), str, line); } VALUE rb_io_gets_internal(VALUE io); static VALUE lex_io_gets(struct parser_params *parser, VALUE io) { return rb_io_gets_internal(io); } rb_ast_t* rb_compile_file(const char *f, VALUE file, int start) { VALUE vparser = rb_parser_new(); return rb_parser_compile_file(vparser, f, file, start); } rb_ast_t* rb_parser_compile_file(VALUE vparser, const char *f, VALUE file, int start) { return rb_parser_compile_file_path(vparser, rb_filesystem_str_new_cstr(f), file, start); } rb_ast_t* rb_parser_compile_file_path(VALUE vparser, VALUE fname, VALUE file, int start) { struct parser_params *parser; rb_ast_t *ast; TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); parser->ast = ast = rb_ast_new(); lex_gets = lex_io_gets; lex_input = file; lex_pbeg = lex_p = lex_pend = 0; ast->root = yycompile(parser, fname, start); parser->ast = 0; RB_GC_GUARD(vparser); /* prohibit tail call optimization */ return ast; } #endif /* !RIPPER */ #define STR_FUNC_ESCAPE 0x01 #define STR_FUNC_EXPAND 0x02 #define STR_FUNC_REGEXP 0x04 #define STR_FUNC_QWORDS 0x08 #define STR_FUNC_SYMBOL 0x10 #define STR_FUNC_INDENT 0x20 #define STR_FUNC_LABEL 0x40 #define STR_FUNC_TERM 0x8000 enum string_type { str_label = STR_FUNC_LABEL, str_squote = (0), str_dquote = (STR_FUNC_EXPAND), str_xquote = (STR_FUNC_EXPAND), str_regexp = (STR_FUNC_REGEXP|STR_FUNC_ESCAPE|STR_FUNC_EXPAND), str_sword = (STR_FUNC_QWORDS), str_dword = (STR_FUNC_QWORDS|STR_FUNC_EXPAND), str_ssym = (STR_FUNC_SYMBOL), str_dsym = (STR_FUNC_SYMBOL|STR_FUNC_EXPAND) }; static VALUE parser_str_new(const char *p, long n, rb_encoding *enc, int func, rb_encoding *enc0) { VALUE str; str = rb_enc_str_new(p, n, enc); if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) { if (rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) { } else if (enc0 == rb_usascii_encoding() && enc != rb_utf8_encoding()) { rb_enc_associate(str, rb_ascii8bit_encoding()); } } return str; } #define lex_goto_eol(parser) ((parser)->lex.pcur = (parser)->lex.pend) #define lex_eol_p() (lex_p >= lex_pend) #define peek(c) peek_n((c), 0) #define peek_n(c,n) (lex_p+(n) < lex_pend && (c) == (unsigned char)lex_p[n]) #define peekc() peekc_n(0) #define peekc_n(n) (lex_p+(n) < lex_pend ? (unsigned char)lex_p[n] : -1) static int parser_nextline(struct parser_params *parser) { VALUE v = lex_nextline; lex_nextline = 0; if (!v) { if (parser->eofp) return -1; if (!lex_input || NIL_P(v = lex_getline(parser))) { parser->eofp = 1; lex_goto_eol(parser); return -1; } parser->cr_seen = FALSE; } #ifdef RIPPER if (parser->tokp < lex_pend) { if (!has_delayed_token()) { parser->delayed = rb_str_buf_new(1024); rb_enc_associate(parser->delayed, current_enc); rb_str_buf_cat(parser->delayed, parser->tokp, lex_pend - parser->tokp); parser->delayed_line = ruby_sourceline; parser->delayed_col = (int)(parser->tokp - lex_pbeg); } else { rb_str_buf_cat(parser->delayed, parser->tokp, lex_pend - parser->tokp); } } #endif if (heredoc_end > 0) { ruby_sourceline = heredoc_end; heredoc_end = 0; } ruby_sourceline++; parser->line_count++; lex_pbeg = lex_p = RSTRING_PTR(v); lex_pend = lex_p + RSTRING_LEN(v); token_flush(parser); lex_lastline = v; return 0; } static int parser_cr(struct parser_params *parser, int c) { if (peek('\n')) { lex_p++; c = '\n'; } else if (!parser->cr_seen) { parser->cr_seen = TRUE; /* carried over with lex_nextline for nextc() */ rb_warn0("encountered \\r in middle of line, treated as a mere space"); } return c; } static inline int parser_nextc(struct parser_params *parser) { int c; if (UNLIKELY(lex_p == lex_pend)) { if (parser_nextline(parser)) return -1; } c = (unsigned char)*lex_p++; if (UNLIKELY(c == '\r')) { c = parser_cr(parser, c); } return c; } static void parser_pushback(struct parser_params *parser, int c) { if (c == -1) return; lex_p--; if (lex_p > lex_pbeg && lex_p[0] == '\n' && lex_p[-1] == '\r') { lex_p--; } } #define was_bol() (lex_p == lex_pbeg + 1) #define tokfix() (tokenbuf[tokidx]='\0') #define tok() tokenbuf #define toklen() tokidx #define toklast() (tokidx>0?tokenbuf[tokidx-1]:0) static char* parser_newtok(struct parser_params *parser) { tokidx = 0; tokline = ruby_sourceline; if (!tokenbuf) { toksiz = 60; tokenbuf = ALLOC_N(char, 60); } if (toksiz > 4096) { toksiz = 60; REALLOC_N(tokenbuf, char, 60); } return tokenbuf; } static char * parser_tokspace(struct parser_params *parser, int n) { tokidx += n; if (tokidx >= toksiz) { do {toksiz *= 2;} while (toksiz < tokidx); REALLOC_N(tokenbuf, char, toksiz); } return &tokenbuf[tokidx-n]; } static void parser_tokadd(struct parser_params *parser, int c) { tokenbuf[tokidx++] = (char)c; if (tokidx >= toksiz) { toksiz *= 2; REALLOC_N(tokenbuf, char, toksiz); } } static int parser_tok_hex(struct parser_params *parser, size_t *numlen) { int c; c = scan_hex(lex_p, 2, numlen); if (!*numlen) { parser->tokp = lex_p; yyerror0("invalid hex escape"); return 0; } lex_p += *numlen; return c; } #define tokcopy(n) memcpy(tokspace(n), lex_p - (n), (n)) static int parser_tokadd_codepoint(struct parser_params *parser, rb_encoding **encp, int regexp_literal, int wide) { size_t numlen; int codepoint = scan_hex(lex_p, wide ? lex_pend - lex_p : 4, &numlen); literal_flush(lex_p); lex_p += numlen; if (wide ? (numlen == 0 || numlen > 6) : (numlen < 4)) { yyerror0("invalid Unicode escape"); return wide && numlen > 0; } if (codepoint > 0x10ffff) { yyerror0("invalid Unicode codepoint (too large)"); return wide; } if ((codepoint & 0xfffff800) == 0xd800) { yyerror0("invalid Unicode codepoint"); return wide; } if (regexp_literal) { tokcopy((int)numlen); } else if (codepoint >= 0x80) { rb_encoding *utf8 = rb_utf8_encoding(); if (*encp && utf8 != *encp) { static const char mixed_utf8[] = "UTF-8 mixed within %s source"; size_t len = sizeof(mixed_utf8) - 2 + strlen(rb_enc_name(*encp)); char *mesg = alloca(len); snprintf(mesg, len, mixed_utf8, rb_enc_name(*encp)); yyerror0(mesg); return wide; } *encp = utf8; tokaddmbc(codepoint, *encp); } else { tokadd(codepoint); } return TRUE; } /* return value is for ?\u3042 */ static int parser_tokadd_utf8(struct parser_params *parser, rb_encoding **encp, int string_literal, int symbol_literal, int regexp_literal) { /* * If string_literal is true, then we allow multiple codepoints * in \u{}, and add the codepoints to the current token. * Otherwise we're parsing a character literal and return a single * codepoint without adding it */ const int open_brace = '{', close_brace = '}'; if (regexp_literal) { tokadd('\\'); tokadd('u'); } if (peek(open_brace)) { /* handle \u{...} form */ int c, last = nextc(); if (lex_p >= lex_pend) goto unterminated; while (ISSPACE(c = *lex_p) && ++lex_p < lex_pend); do { if (regexp_literal) tokadd(last); if (!parser_tokadd_codepoint(parser, encp, regexp_literal, TRUE)) { break; } while (ISSPACE(c = *lex_p)) { if (++lex_p >= lex_pend) goto unterminated; last = c; } } while (c != close_brace); if (c != close_brace) { unterminated: literal_flush(lex_p); yyerror0("unterminated Unicode escape"); return 0; } if (regexp_literal) tokadd(close_brace); nextc(); } else { /* handle \uxxxx form */ if (!parser_tokadd_codepoint(parser, encp, regexp_literal, FALSE)) { return 0; } } return TRUE; } #define ESCAPE_CONTROL 1 #define ESCAPE_META 2 static int parser_read_escape(struct parser_params *parser, int flags, rb_encoding **encp) { int c; size_t numlen; switch (c = nextc()) { case '\\': /* Backslash */ return c; case 'n': /* newline */ return '\n'; case 't': /* horizontal tab */ return '\t'; case 'r': /* carriage-return */ return '\r'; case 'f': /* form-feed */ return '\f'; case 'v': /* vertical tab */ return '\13'; case 'a': /* alarm(bell) */ return '\007'; case 'e': /* escape */ return 033; case '0': case '1': case '2': case '3': /* octal constant */ case '4': case '5': case '6': case '7': pushback(c); c = scan_oct(lex_p, 3, &numlen); lex_p += numlen; return c; case 'x': /* hex constant */ c = tok_hex(&numlen); if (numlen == 0) return 0; return c; case 'b': /* backspace */ return '\010'; case 's': /* space */ return ' '; case 'M': if (flags & ESCAPE_META) goto eof; if ((c = nextc()) != '-') { goto eof; } if ((c = nextc()) == '\\') { if (peek('u')) goto eof; return read_escape(flags|ESCAPE_META, encp) | 0x80; } else if (c == -1 || !ISASCII(c)) goto eof; else { return ((c & 0xff) | 0x80); } case 'C': if ((c = nextc()) != '-') { goto eof; } case 'c': if (flags & ESCAPE_CONTROL) goto eof; if ((c = nextc())== '\\') { if (peek('u')) goto eof; c = read_escape(flags|ESCAPE_CONTROL, encp); } else if (c == '?') return 0177; else if (c == -1 || !ISASCII(c)) goto eof; return c & 0x9f; eof: case -1: yyerror0("Invalid escape character syntax"); pushback(c); return '\0'; default: return c; } } static void parser_tokaddmbc(struct parser_params *parser, int c, rb_encoding *enc) { int len = rb_enc_codelen(c, enc); rb_enc_mbcput(c, tokspace(len), enc); } static int parser_tokadd_escape(struct parser_params *parser, rb_encoding **encp) { int c; int flags = 0; size_t numlen; first: switch (c = nextc()) { case '\n': return 0; /* just ignore */ case '0': case '1': case '2': case '3': /* octal constant */ case '4': case '5': case '6': case '7': { ruby_scan_oct(--lex_p, 3, &numlen); if (numlen == 0) goto eof; lex_p += numlen; tokcopy((int)numlen + 1); } return 0; case 'x': /* hex constant */ { tok_hex(&numlen); if (numlen == 0) return -1; tokcopy((int)numlen + 2); } return 0; case 'M': if (flags & ESCAPE_META) goto eof; if ((c = nextc()) != '-') { pushback(c); goto eof; } tokcopy(3); flags |= ESCAPE_META; goto escaped; case 'C': if (flags & ESCAPE_CONTROL) goto eof; if ((c = nextc()) != '-') { pushback(c); goto eof; } tokcopy(3); goto escaped; case 'c': if (flags & ESCAPE_CONTROL) goto eof; tokcopy(2); flags |= ESCAPE_CONTROL; escaped: if ((c = nextc()) == '\\') { goto first; } else if (c == -1) goto eof; tokadd(c); return 0; eof: case -1: yyerror0("Invalid escape character syntax"); return -1; default: tokadd('\\'); tokadd(c); } return 0; } static int parser_regx_options(struct parser_params *parser) { int kcode = 0; int kopt = 0; int options = 0; int c, opt, kc; newtok(); while (c = nextc(), ISALPHA(c)) { if (c == 'o') { options |= RE_OPTION_ONCE; } else if (rb_char_to_option_kcode(c, &opt, &kc)) { if (kc >= 0) { if (kc != rb_ascii8bit_encindex()) kcode = c; kopt = opt; } else { options |= opt; } } else { tokadd(c); } } options |= kopt; pushback(c); if (toklen()) { tokfix(); compile_error(PARSER_ARG "unknown regexp option%s - %s", toklen() > 1 ? "s" : "", tok()); } return options | RE_OPTION_ENCODING(kcode); } static void dispose_string(struct parser_params *parser, VALUE str) { rb_ast_delete_mark_object(parser->ast, str); rb_str_free(str); rb_gc_force_recycle(str); } static int parser_tokadd_mbchar(struct parser_params *parser, int c) { int len = parser_precise_mbclen(parser, lex_p-1); if (len < 0) return -1; tokadd(c); lex_p += --len; if (len > 0) tokcopy(len); return c; } #define tokadd_mbchar(c) parser_tokadd_mbchar(parser, (c)) static inline int simple_re_meta(int c) { switch (c) { case '$': case '*': case '+': case '.': case '?': case '^': case '|': case ')': case ']': case '}': case '>': return TRUE; default: return FALSE; } } static int parser_update_heredoc_indent(struct parser_params *parser, int c) { if (heredoc_line_indent == -1) { if (c == '\n') heredoc_line_indent = 0; } else { if (c == ' ') { heredoc_line_indent++; return TRUE; } else if (c == '\t') { int w = (heredoc_line_indent / TAB_WIDTH) + 1; heredoc_line_indent = w * TAB_WIDTH; return TRUE; } else if (c != '\n') { if (heredoc_indent > heredoc_line_indent) { heredoc_indent = heredoc_line_indent; } heredoc_line_indent = -1; } } return FALSE; } static int parser_tokadd_string(struct parser_params *parser, int func, int term, int paren, long *nest, rb_encoding **encp) { int c; rb_encoding *enc = 0; char *errbuf = 0; static const char mixed_msg[] = "%s mixed within %s source"; #define mixed_error(enc1, enc2) if (!errbuf) { \ size_t len = sizeof(mixed_msg) - 4; \ len += strlen(rb_enc_name(enc1)); \ len += strlen(rb_enc_name(enc2)); \ errbuf = ALLOCA_N(char, len); \ snprintf(errbuf, len, mixed_msg, \ rb_enc_name(enc1), \ rb_enc_name(enc2)); \ yyerror0(errbuf); \ } #define mixed_escape(beg, enc1, enc2) do { \ const char *pos = lex_p; \ lex_p = (beg); \ mixed_error((enc1), (enc2)); \ lex_p = pos; \ } while (0) while ((c = nextc()) != -1) { if (heredoc_indent > 0) { parser_update_heredoc_indent(parser, c); } if (paren && c == paren) { ++*nest; } else if (c == term) { if (!nest || !*nest) { pushback(c); break; } --*nest; } else if ((func & STR_FUNC_EXPAND) && c == '#' && lex_p < lex_pend) { int c2 = *lex_p; if (c2 == '$' || c2 == '@' || c2 == '{') { pushback(c); break; } } else if (c == '\\') { literal_flush(lex_p - 1); c = nextc(); switch (c) { case '\n': if (func & STR_FUNC_QWORDS) break; if (func & STR_FUNC_EXPAND) continue; tokadd('\\'); break; case '\\': if (func & STR_FUNC_ESCAPE) tokadd(c); break; case 'u': if ((func & STR_FUNC_EXPAND) == 0) { tokadd('\\'); break; } if (!parser_tokadd_utf8(parser, &enc, term, func & STR_FUNC_SYMBOL, func & STR_FUNC_REGEXP)) { return -1; } continue; default: if (c == -1) return -1; if (!ISASCII(c)) { if ((func & STR_FUNC_EXPAND) == 0) tokadd('\\'); goto non_ascii; } if (func & STR_FUNC_REGEXP) { if (c == term && !simple_re_meta(c)) { tokadd(c); continue; } pushback(c); if ((c = tokadd_escape(&enc)) < 0) return -1; if (enc && enc != *encp) { mixed_escape(parser->tokp+2, enc, *encp); } continue; } else if (func & STR_FUNC_EXPAND) { pushback(c); if (func & STR_FUNC_ESCAPE) tokadd('\\'); c = read_escape(0, &enc); } else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) { /* ignore backslashed spaces in %w */ } else if (c != term && !(paren && c == paren)) { tokadd('\\'); pushback(c); continue; } } } else if (!parser_isascii()) { non_ascii: if (!enc) { enc = *encp; } else if (enc != *encp) { mixed_error(enc, *encp); continue; } if (tokadd_mbchar(c) == -1) return -1; continue; } else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) { pushback(c); break; } if (c & 0x80) { if (!enc) { enc = *encp; } else if (enc != *encp) { mixed_error(enc, *encp); continue; } } tokadd(c); } if (enc) *encp = enc; return c; } /* imemo_parser_strterm for literal */ #define NEW_STRTERM(func, term, paren) \ (rb_strterm_t*)rb_imemo_new(imemo_parser_strterm, (VALUE)(func), (VALUE)(paren), (VALUE)(term), 0) #ifdef RIPPER static void token_flush_string_content(struct parser_params *parser, rb_encoding *enc) { VALUE content = yylval.val; if (!ripper_is_node_yylval(content)) content = ripper_new_yylval(0, 0, content); if (has_delayed_token()) { ptrdiff_t len = lex_p - parser->tokp; if (len > 0) { rb_enc_str_buf_cat(parser->delayed, parser->tokp, len, enc); } dispatch_delayed_token(tSTRING_CONTENT); parser->tokp = lex_p; RNODE(content)->nd_rval = yylval.val; } dispatch_scan_event(tSTRING_CONTENT); if (yylval.val != content) RNODE(content)->nd_rval = yylval.val; yylval.val = content; } #define flush_string_content(enc) token_flush_string_content(parser, (enc)) #else #define flush_string_content(enc) ((void)(enc)) #endif RUBY_FUNC_EXPORTED const unsigned int ruby_global_name_punct_bits[(0x7e - 0x20 + 31) / 32]; /* this can be shared with ripper, since it's independent from struct * parser_params. */ #ifndef RIPPER #define BIT(c, idx) (((c) / 32 - 1 == idx) ? (1U << ((c) % 32)) : 0) #define SPECIAL_PUNCT(idx) ( \ BIT('~', idx) | BIT('*', idx) | BIT('$', idx) | BIT('?', idx) | \ BIT('!', idx) | BIT('@', idx) | BIT('/', idx) | BIT('\\', idx) | \ BIT(';', idx) | BIT(',', idx) | BIT('.', idx) | BIT('=', idx) | \ BIT(':', idx) | BIT('<', idx) | BIT('>', idx) | BIT('\"', idx) | \ BIT('&', idx) | BIT('`', idx) | BIT('\'', idx) | BIT('+', idx) | \ BIT('0', idx)) const unsigned int ruby_global_name_punct_bits[] = { SPECIAL_PUNCT(0), SPECIAL_PUNCT(1), SPECIAL_PUNCT(2), }; #undef BIT #undef SPECIAL_PUNCT #endif static enum yytokentype parser_peek_variable_name(struct parser_params *parser) { int c; const char *p = lex_p; if (p + 1 >= lex_pend) return 0; c = *p++; switch (c) { case '$': if ((c = *p) == '-') { if (++p >= lex_pend) return 0; c = *p; } else if (is_global_name_punct(c) || ISDIGIT(c)) { return tSTRING_DVAR; } break; case '@': if ((c = *p) == '@') { if (++p >= lex_pend) return 0; c = *p; } break; case '{': lex_p = p; command_start = TRUE; return tSTRING_DBEG; default: return 0; } if (!ISASCII(c) || c == '_' || ISALPHA(c)) return tSTRING_DVAR; return 0; } #define IS_ARG() IS_lex_state(EXPR_ARG_ANY) #define IS_END() IS_lex_state(EXPR_END_ANY) #define IS_BEG() (IS_lex_state(EXPR_BEG_ANY) || IS_lex_state_all(EXPR_ARG|EXPR_LABELED)) #define IS_SPCARG(c) (IS_ARG() && space_seen && !ISSPACE(c)) #define IS_LABEL_POSSIBLE() (\ (IS_lex_state(EXPR_LABEL|EXPR_ENDFN) && !cmd_state) || \ IS_ARG()) #define IS_LABEL_SUFFIX(n) (peek_n(':',(n)) && !peek_n(':', (n)+1)) #define IS_AFTER_OPERATOR() IS_lex_state(EXPR_FNAME | EXPR_DOT) static inline enum yytokentype parser_string_term(struct parser_params *parser, int func) { lex_strterm = 0; if (func & STR_FUNC_REGEXP) { set_yylval_num(regx_options()); dispatch_scan_event(tREGEXP_END); SET_LEX_STATE(EXPR_END|EXPR_ENDARG); return tREGEXP_END; } if ((func & STR_FUNC_LABEL) && IS_LABEL_SUFFIX(0)) { nextc(); SET_LEX_STATE(EXPR_BEG|EXPR_LABEL); return tLABEL_END; } SET_LEX_STATE(EXPR_END|EXPR_ENDARG); return tSTRING_END; } static enum yytokentype parser_parse_string(struct parser_params *parser, rb_strterm_literal_t *quote) { int func = (int)quote->u1.func; int term = (int)quote->u3.term; int paren = (int)quote->u2.paren; int c, space = 0; rb_encoding *enc = current_enc; VALUE lit; if (func & STR_FUNC_TERM) { SET_LEX_STATE(EXPR_END|EXPR_ENDARG); lex_strterm = 0; return func & STR_FUNC_REGEXP ? tREGEXP_END : tSTRING_END; } c = nextc(); if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) { do {c = nextc();} while (ISSPACE(c)); space = 1; } if (c == term && !quote->u0.nest) { if (func & STR_FUNC_QWORDS) { quote->u1.func |= STR_FUNC_TERM; return ' '; } return parser_string_term(parser, func); } if (space) { pushback(c); return ' '; } newtok(); if ((func & STR_FUNC_EXPAND) && c == '#') { int t = parser_peek_variable_name(parser); if (t) return t; tokadd('#'); c = nextc(); } pushback(c); if (tokadd_string(func, term, paren, "e->u0.nest, &enc) == -1) { if (parser->eofp) { #ifndef RIPPER # define unterminated_literal(mesg) yyerror0(mesg) #else # define unterminated_literal(mesg) compile_error(PARSER_ARG mesg) #endif literal_flush(lex_p); if (func & STR_FUNC_REGEXP) { unterminated_literal("unterminated regexp meets end of file"); } else { unterminated_literal("unterminated string meets end of file"); } quote->u1.func |= STR_FUNC_TERM; } } tokfix(); add_mark_object(lit = STR_NEW3(tok(), toklen(), enc, func)); set_yylval_str(lit); flush_string_content(enc); return tSTRING_CONTENT; } static enum yytokentype parser_heredoc_identifier(struct parser_params *parser) { int c = nextc(), term, func = 0; enum yytokentype token = tSTRING_BEG; long len; int newline = 0; int indent = 0; if (c == '-') { c = nextc(); func = STR_FUNC_INDENT; } else if (c == '~') { c = nextc(); func = STR_FUNC_INDENT; indent = INT_MAX; } switch (c) { case '\'': func |= str_squote; goto quoted; case '"': func |= str_dquote; goto quoted; case '`': token = tXSTRING_BEG; func |= str_xquote; goto quoted; quoted: newtok(); tokadd(func); term = c; while ((c = nextc()) != -1 && c != term) { if (tokadd_mbchar(c) == -1) return 0; if (!newline && c == '\n') newline = 1; else if (newline) newline = 2; } if (c == -1) { compile_error(PARSER_ARG "unterminated here document identifier"); return 0; } switch (newline) { case 1: rb_warn0("here document identifier ends with a newline"); if (--tokidx > 0 && tokenbuf[tokidx] == '\r') --tokidx; break; case 2: compile_error(PARSER_ARG "here document identifier across newlines, never match"); return -1; } break; default: if (!parser_is_identchar()) { pushback(c); if (func & STR_FUNC_INDENT) { pushback(indent > 0 ? '~' : '-'); } return 0; } newtok(); tokadd(func |= str_dquote); do { if (tokadd_mbchar(c) == -1) return 0; } while ((c = nextc()) != -1 && parser_is_identchar()); pushback(c); break; } tokfix(); dispatch_scan_event(tHEREDOC_BEG); len = lex_p - lex_pbeg; lex_goto_eol(parser); lex_strterm = (rb_strterm_t*)rb_imemo_new(imemo_parser_strterm, STR_NEW(tok(), toklen()), /* term */ lex_lastline, /* lastline */ len, /* lastidx */ ruby_sourceline); lex_strterm->flags |= STRTERM_HEREDOC; token_flush(parser); heredoc_indent = indent; heredoc_line_indent = 0; return token; } static void parser_heredoc_restore(struct parser_params *parser, rb_strterm_heredoc_t *here) { VALUE line; lex_strterm = 0; line = here->lastline; lex_lastline = line; lex_pbeg = RSTRING_PTR(line); lex_pend = lex_pbeg + RSTRING_LEN(line); lex_p = lex_pbeg + here->u3.lastidx; heredoc_end = ruby_sourceline; ruby_sourceline = here->u1.sourceline; token_flush(parser); } static int dedent_string(VALUE string, int width) { char *str; long len; int i, col = 0; RSTRING_GETMEM(string, str, len); for (i = 0; i < len && col < width; i++) { if (str[i] == ' ') { col++; } else if (str[i] == '\t') { int n = TAB_WIDTH * (col / TAB_WIDTH + 1); if (n > width) break; col = n; } else { break; } } if (!i) return 0; rb_str_modify(string); str = RSTRING_PTR(string); if (RSTRING_LEN(string) != len) rb_fatal("literal string changed: %+"PRIsVALUE, string); MEMMOVE(str, str + i, char, len - i); rb_str_set_len(string, len - i); return i; } #ifndef RIPPER static NODE * parser_heredoc_dedent(struct parser_params *parser, NODE *root) { NODE *node, *str_node; int bol = TRUE; int indent = heredoc_indent; if (indent <= 0) return root; heredoc_indent = 0; if (!root) return root; node = str_node = root; if (nd_type(root) == NODE_ARRAY) str_node = root->nd_head; while (str_node) { VALUE lit = str_node->nd_lit; if (bol) dedent_string(lit, indent); bol = TRUE; str_node = 0; while ((node = node->nd_next) != 0 && nd_type(node) == NODE_ARRAY) { if ((str_node = node->nd_head) != 0) { enum node_type type = nd_type(str_node); if (type == NODE_STR || type == NODE_DSTR) break; bol = FALSE; str_node = 0; } } } return root; } #else /* RIPPER */ static VALUE parser_heredoc_dedent(struct parser_params *parser, VALUE array) { int indent = heredoc_indent; if (indent <= 0) return array; heredoc_indent = 0; dispatch2(heredoc_dedent, array, INT2NUM(indent)); return array; } static VALUE parser_dedent_string(VALUE self, VALUE input, VALUE width) { int wid, col; StringValue(input); wid = NUM2UINT(width); col = dedent_string(input, wid); return INT2NUM(col); } #endif static int parser_whole_match_p(struct parser_params *parser, const char *eos, long len, int indent) { const char *p = lex_pbeg; long n; if (indent) { while (*p && ISSPACE(*p)) p++; } n = lex_pend - (p + len); if (n < 0) return FALSE; if (n > 0 && p[len] != '\n') { if (p[len] != '\r') return FALSE; if (n <= 1 || p[len+1] != '\n') return FALSE; } return strncmp(eos, p, len) == 0; } #define NUM_SUFFIX_R (1<<0) #define NUM_SUFFIX_I (1<<1) #define NUM_SUFFIX_ALL 3 static int parser_number_literal_suffix(struct parser_params *parser, int mask) { int c, result = 0; const char *lastp = lex_p; while ((c = nextc()) != -1) { if ((mask & NUM_SUFFIX_I) && c == 'i') { result |= (mask & NUM_SUFFIX_I); mask &= ~NUM_SUFFIX_I; /* r after i, rational of complex is disallowed */ mask &= ~NUM_SUFFIX_R; continue; } if ((mask & NUM_SUFFIX_R) && c == 'r') { result |= (mask & NUM_SUFFIX_R); mask &= ~NUM_SUFFIX_R; continue; } if (!ISASCII(c) || ISALPHA(c) || c == '_') { lex_p = lastp; literal_flush(lex_p); return 0; } pushback(c); if (c == '.') { c = peekc_n(1); if (ISDIGIT(c)) { yyerror0("unexpected fraction part after numeric literal"); lex_p += 2; while (parser_is_identchar()) nextc(); } } break; } return result; } static enum yytokentype parser_set_number_literal(struct parser_params *parser, VALUE v, enum yytokentype type, int suffix) { if (suffix & NUM_SUFFIX_I) { v = rb_complex_raw(INT2FIX(0), v); type = tIMAGINARY; } set_yylval_literal(v); add_mark_object(v); SET_LEX_STATE(EXPR_END|EXPR_ENDARG); return type; } static int parser_set_integer_literal(struct parser_params *parser, VALUE v, int suffix) { enum yytokentype type = tINTEGER; if (suffix & NUM_SUFFIX_R) { v = rb_rational_raw1(v); type = tRATIONAL; } return set_number_literal(v, type, suffix); } #ifdef RIPPER static void ripper_dispatch_heredoc_end(struct parser_params *parser) { VALUE str; if (has_delayed_token()) dispatch_delayed_token(tSTRING_CONTENT); str = STR_NEW(parser->tokp, lex_pend - parser->tokp); ripper_dispatch1(parser, ripper_token2eventid(tHEREDOC_END), str); lex_goto_eol(parser); token_flush(parser); } #define dispatch_heredoc_end() ripper_dispatch_heredoc_end(parser) #else #define dispatch_heredoc_end() ((void)0) #endif static enum yytokentype parser_here_document(struct parser_params *parser, rb_strterm_heredoc_t *here) { int c, func, indent = 0; const char *eos, *p, *pend; long len; VALUE str = 0; rb_encoding *enc = current_enc; eos = RSTRING_PTR(here->term); len = RSTRING_LEN(here->term) - 1; indent = (func = *eos++) & STR_FUNC_INDENT; if ((c = nextc()) == -1) { error: compile_error(PARSER_ARG "can't find string \"%s\" anywhere before EOF", eos); #ifdef RIPPER if (!has_delayed_token()) { dispatch_scan_event(tSTRING_CONTENT); } else { if (str) { rb_str_append(parser->delayed, str); } else if ((len = lex_p - parser->tokp) > 0) { if (!(func & STR_FUNC_REGEXP) && rb_enc_asciicompat(enc)) { int cr = ENC_CODERANGE_UNKNOWN; rb_str_coderange_scan_restartable(parser->tokp, lex_p, enc, &cr); if (cr != ENC_CODERANGE_7BIT && current_enc == rb_usascii_encoding() && enc != rb_utf8_encoding()) { enc = rb_ascii8bit_encoding(); } } rb_enc_str_buf_cat(parser->delayed, parser->tokp, len, enc); } dispatch_delayed_token(tSTRING_CONTENT); } lex_goto_eol(parser); #endif restore: heredoc_restore(&lex_strterm->u.heredoc); lex_strterm = 0; return 0; } if (was_bol() && whole_match_p(eos, len, indent)) { dispatch_heredoc_end(); heredoc_restore(&lex_strterm->u.heredoc); lex_strterm = 0; SET_LEX_STATE(EXPR_END); return tSTRING_END; } if (!(func & STR_FUNC_EXPAND)) { do { p = RSTRING_PTR(lex_lastline); pend = lex_pend; if (pend > p) { switch (pend[-1]) { case '\n': if (--pend == p || pend[-1] != '\r') { pend++; break; } case '\r': --pend; } } if (heredoc_indent > 0) { long i = 0; while (p + i < pend && parser_update_heredoc_indent(parser, p[i])) i++; heredoc_line_indent = 0; } if (str) rb_str_cat(str, p, pend - p); else str = STR_NEW(p, pend - p); if (pend < lex_pend) rb_str_cat(str, "\n", 1); lex_goto_eol(parser); if (heredoc_indent > 0) { set_yylval_str(str); add_mark_object(str); flush_string_content(enc); return tSTRING_CONTENT; } if (nextc() == -1) { if (str) { dispose_string(parser, str); str = 0; } goto error; } } while (!whole_match_p(eos, len, indent)); } else { /* int mb = ENC_CODERANGE_7BIT, *mbp = &mb;*/ newtok(); if (c == '#') { int t = parser_peek_variable_name(parser); if (heredoc_line_indent != -1) { if (heredoc_indent > heredoc_line_indent) { heredoc_indent = heredoc_line_indent; } heredoc_line_indent = -1; } if (t) return t; tokadd('#'); c = nextc(); } do { pushback(c); if ((c = tokadd_string(func, '\n', 0, NULL, &enc)) == -1) { if (parser->eofp) goto error; goto restore; } if (c != '\n') { VALUE lit; flush: add_mark_object(lit = STR_NEW3(tok(), toklen(), enc, func)); set_yylval_str(lit); flush_string_content(enc); return tSTRING_CONTENT; } tokadd(nextc()); if (heredoc_indent > 0) { lex_goto_eol(parser); goto flush; } /* if (mbp && mb == ENC_CODERANGE_UNKNOWN) mbp = 0;*/ if ((c = nextc()) == -1) goto error; } while (!whole_match_p(eos, len, indent)); str = STR_NEW3(tok(), toklen(), enc, func); } dispatch_heredoc_end(); #ifdef RIPPER str = ripper_new_yylval(ripper_token2eventid(tSTRING_CONTENT), yylval.val, str); #endif heredoc_restore(&lex_strterm->u.heredoc); lex_strterm = NEW_STRTERM(func | STR_FUNC_TERM, 0, 0); set_yylval_str(str); add_mark_object(str); return tSTRING_CONTENT; } #include "lex.c" static void arg_ambiguous_gen(struct parser_params *parser, char c) { #ifndef RIPPER rb_warning1("ambiguous first argument; put parentheses or a space even after `%c' operator", WARN_I(c)); #else dispatch1(arg_ambiguous, rb_usascii_str_new(&c, 1)); #endif } #define arg_ambiguous(c) (arg_ambiguous_gen(parser, (c)), 1) static ID formal_argument_gen(struct parser_params *parser, ID lhs) { switch (id_type(lhs)) { case ID_LOCAL: break; #ifndef RIPPER case ID_CONST: yyerror0("formal argument cannot be a constant"); return 0; case ID_INSTANCE: yyerror0("formal argument cannot be an instance variable"); return 0; case ID_GLOBAL: yyerror0("formal argument cannot be a global variable"); return 0; case ID_CLASS: yyerror0("formal argument cannot be a class variable"); return 0; default: yyerror0("formal argument must be local variable"); return 0; #else default: lhs = dispatch1(param_error, lhs); ripper_error(); return 0; #endif } shadowing_lvar(lhs); return lhs; } static int lvar_defined_gen(struct parser_params *parser, ID id) { return (dyna_in_block() && dvar_defined(id)) || local_id(id); } /* emacsen -*- hack */ static long parser_encode_length(struct parser_params *parser, const char *name, long len) { long nlen; if (len > 5 && name[nlen = len - 5] == '-') { if (rb_memcicmp(name + nlen + 1, "unix", 4) == 0) return nlen; } if (len > 4 && name[nlen = len - 4] == '-') { if (rb_memcicmp(name + nlen + 1, "dos", 3) == 0) return nlen; if (rb_memcicmp(name + nlen + 1, "mac", 3) == 0 && !(len == 8 && rb_memcicmp(name, "utf8-mac", len) == 0)) /* exclude UTF8-MAC because the encoding named "UTF8" doesn't exist in Ruby */ return nlen; } return len; } static void parser_set_encode(struct parser_params *parser, const char *name) { int idx = rb_enc_find_index(name); rb_encoding *enc; VALUE excargs[3]; if (idx < 0) { excargs[1] = rb_sprintf("unknown encoding name: %s", name); error: excargs[0] = rb_eArgError; excargs[2] = rb_make_backtrace(); rb_ary_unshift(excargs[2], rb_sprintf("%"PRIsVALUE":%d", ruby_sourcefile_string, ruby_sourceline)); rb_exc_raise(rb_make_exception(3, excargs)); } enc = rb_enc_from_index(idx); if (!rb_enc_asciicompat(enc)) { excargs[1] = rb_sprintf("%s is not ASCII compatible", rb_enc_name(enc)); goto error; } parser->enc = enc; #ifndef RIPPER if (ruby_debug_lines) { VALUE lines = ruby_debug_lines; long i, n = RARRAY_LEN(lines); for (i = 0; i < n; ++i) { rb_enc_associate_index(RARRAY_AREF(lines, i), idx); } } #endif } static int comment_at_top(struct parser_params *parser) { const char *p = lex_pbeg, *pend = lex_p - 1; if (parser->line_count != (parser->has_shebang ? 2 : 1)) return 0; while (p < pend) { if (!ISSPACE(*p)) return 0; p++; } return 1; } typedef long (*rb_magic_comment_length_t)(struct parser_params *parser, const char *name, long len); typedef void (*rb_magic_comment_setter_t)(struct parser_params *parser, const char *name, const char *val); static void magic_comment_encoding(struct parser_params *parser, const char *name, const char *val) { if (!comment_at_top(parser)) { return; } parser_set_encode(parser, val); } static int parser_get_bool(struct parser_params *parser, const char *name, const char *val) { switch (*val) { case 't': case 'T': if (strcasecmp(val, "true") == 0) { return TRUE; } break; case 'f': case 'F': if (strcasecmp(val, "false") == 0) { return FALSE; } break; } rb_compile_warning(ruby_sourcefile, ruby_sourceline, "invalid value for %s: %s", name, val); return -1; } static void parser_set_token_info(struct parser_params *parser, const char *name, const char *val) { int b = parser_get_bool(parser, name, val); if (b >= 0) parser->token_info_enabled = b; } static void parser_set_compile_option_flag(struct parser_params *parser, const char *name, const char *val) { int b; if (parser->token_seen) { rb_warning1("`%s' is ignored after any tokens", WARN_S(name)); return; } b = parser_get_bool(parser, name, val); if (b < 0) return; if (!parser->compile_option) parser->compile_option = rb_obj_hide(rb_ident_hash_new()); rb_hash_aset(parser->compile_option, ID2SYM(rb_intern(name)), (b ? Qtrue : Qfalse)); } # if WARN_PAST_SCOPE static void parser_set_past_scope(struct parser_params *parser, const char *name, const char *val) { int b = parser_get_bool(parser, name, val); if (b >= 0) parser->past_scope_enabled = b; } # endif struct magic_comment { const char *name; rb_magic_comment_setter_t func; rb_magic_comment_length_t length; }; static const struct magic_comment magic_comments[] = { {"coding", magic_comment_encoding, parser_encode_length}, {"encoding", magic_comment_encoding, parser_encode_length}, {"frozen_string_literal", parser_set_compile_option_flag}, {"warn_indent", parser_set_token_info}, # if WARN_PAST_SCOPE {"warn_past_scope", parser_set_past_scope}, # endif }; static const char * magic_comment_marker(const char *str, long len) { long i = 2; while (i < len) { switch (str[i]) { case '-': if (str[i-1] == '*' && str[i-2] == '-') { return str + i + 1; } i += 2; break; case '*': if (i + 1 >= len) return 0; if (str[i+1] != '-') { i += 4; } else if (str[i-1] != '-') { i += 2; } else { return str + i + 2; } break; default: i += 3; break; } } return 0; } static int parser_magic_comment(struct parser_params *parser, const char *str, long len) { int indicator = 0; VALUE name = 0, val = 0; const char *beg, *end, *vbeg, *vend; #define str_copy(_s, _p, _n) ((_s) \ ? (void)(rb_str_resize((_s), (_n)), \ MEMCPY(RSTRING_PTR(_s), (_p), char, (_n)), (_s)) \ : (void)((_s) = STR_NEW((_p), (_n)))) if (len <= 7) return FALSE; if (!!(beg = magic_comment_marker(str, len))) { if (!(end = magic_comment_marker(beg, str + len - beg))) return FALSE; indicator = TRUE; str = beg; len = end - beg - 3; } /* %r"([^\\s\'\":;]+)\\s*:\\s*(\"(?:\\\\.|[^\"])*\"|[^\"\\s;]+)[\\s;]*" */ while (len > 0) { const struct magic_comment *p = magic_comments; char *s; int i; long n = 0; for (; len > 0 && *str; str++, --len) { switch (*str) { case '\'': case '"': case ':': case ';': continue; } if (!ISSPACE(*str)) break; } for (beg = str; len > 0; str++, --len) { switch (*str) { case '\'': case '"': case ':': case ';': break; default: if (ISSPACE(*str)) break; continue; } break; } for (end = str; len > 0 && ISSPACE(*str); str++, --len); if (!len) break; if (*str != ':') { if (!indicator) return FALSE; continue; } do str++; while (--len > 0 && ISSPACE(*str)); if (!len) break; if (*str == '"') { for (vbeg = ++str; --len > 0 && *str != '"'; str++) { if (*str == '\\') { --len; ++str; } } vend = str; if (len) { --len; ++str; } } else { for (vbeg = str; len > 0 && *str != '"' && *str != ';' && !ISSPACE(*str); --len, str++); vend = str; } if (indicator) { while (len > 0 && (*str == ';' || ISSPACE(*str))) --len, str++; } else { while (len > 0 && (ISSPACE(*str))) --len, str++; if (len) return FALSE; } n = end - beg; str_copy(name, beg, n); s = RSTRING_PTR(name); for (i = 0; i < n; ++i) { if (s[i] == '-') s[i] = '_'; } do { if (STRNCASECMP(p->name, s, n) == 0 && !p->name[n]) { n = vend - vbeg; if (p->length) { n = (*p->length)(parser, vbeg, n); } str_copy(val, vbeg, n); (*p->func)(parser, p->name, RSTRING_PTR(val)); break; } } while (++p < magic_comments + numberof(magic_comments)); #ifdef RIPPER str_copy(val, vbeg, vend - vbeg); dispatch2(magic_comment, name, val); #endif } return TRUE; } static void set_file_encoding(struct parser_params *parser, const char *str, const char *send) { int sep = 0; const char *beg = str; VALUE s; for (;;) { if (send - str <= 6) return; switch (str[6]) { case 'C': case 'c': str += 6; continue; case 'O': case 'o': str += 5; continue; case 'D': case 'd': str += 4; continue; case 'I': case 'i': str += 3; continue; case 'N': case 'n': str += 2; continue; case 'G': case 'g': str += 1; continue; case '=': case ':': sep = 1; str += 6; break; default: str += 6; if (ISSPACE(*str)) break; continue; } if (STRNCASECMP(str-6, "coding", 6) == 0) break; } for (;;) { do { if (++str >= send) return; } while (ISSPACE(*str)); if (sep) break; if (*str != '=' && *str != ':') return; sep = 1; str++; } beg = str; while ((*str == '-' || *str == '_' || ISALNUM(*str)) && ++str < send); s = rb_str_new(beg, parser_encode_length(parser, beg, str - beg)); parser_set_encode(parser, RSTRING_PTR(s)); rb_str_resize(s, 0); } static void parser_prepare(struct parser_params *parser) { int c = nextc(); parser->token_info_enabled = !compile_for_eval && RTEST(ruby_verbose); switch (c) { case '#': if (peek('!')) parser->has_shebang = 1; break; case 0xef: /* UTF-8 BOM marker */ if (lex_pend - lex_p >= 2 && (unsigned char)lex_p[0] == 0xbb && (unsigned char)lex_p[1] == 0xbf) { parser->enc = rb_utf8_encoding(); lex_p += 2; lex_pbeg = lex_p; return; } break; case EOF: return; } pushback(c); parser->enc = rb_enc_get(lex_lastline); } #ifndef RIPPER #define ambiguous_operator(tok, op, syn) ( \ rb_warning0("`"op"' after local variable or literal is interpreted as binary operator"), \ rb_warning0("even though it seems like "syn"")) #else #define ambiguous_operator(tok, op, syn) \ dispatch2(operator_ambiguous, TOKEN2VAL(tok), rb_str_new_cstr(syn)) #endif #define warn_balanced(tok, op, syn) ((void) \ (!IS_lex_state_for(last_state, EXPR_CLASS|EXPR_DOT|EXPR_FNAME|EXPR_ENDFN) && \ space_seen && !ISSPACE(c) && \ (ambiguous_operator(tok, op, syn), 0)), \ (enum yytokentype)(tok)) static VALUE parse_rational(struct parser_params *parser, char *str, int len, int seen_point) { VALUE v; char *point = &str[seen_point]; size_t fraclen = len-seen_point-1; memmove(point, point+1, fraclen+1); v = rb_cstr_to_inum(str, 10, FALSE); return rb_rational_new(v, rb_int_positive_pow(10, fraclen)); } static int parse_numeric(struct parser_params *parser, int c) { int is_float, seen_point, seen_e, nondigit; int suffix; is_float = seen_point = seen_e = nondigit = 0; SET_LEX_STATE(EXPR_END); newtok(); if (c == '-' || c == '+') { tokadd(c); c = nextc(); } if (c == '0') { #define no_digits() do {yyerror0("numeric literal without digits"); return 0;} while (0) int start = toklen(); c = nextc(); if (c == 'x' || c == 'X') { /* hexadecimal */ c = nextc(); if (c != -1 && ISXDIGIT(c)) { do { if (c == '_') { if (nondigit) break; nondigit = c; continue; } if (!ISXDIGIT(c)) break; nondigit = 0; tokadd(c); } while ((c = nextc()) != -1); } pushback(c); tokfix(); if (toklen() == start) { no_digits(); } else if (nondigit) goto trailing_uc; suffix = number_literal_suffix(NUM_SUFFIX_ALL); return set_integer_literal(rb_cstr_to_inum(tok(), 16, FALSE), suffix); } if (c == 'b' || c == 'B') { /* binary */ c = nextc(); if (c == '0' || c == '1') { do { if (c == '_') { if (nondigit) break; nondigit = c; continue; } if (c != '0' && c != '1') break; nondigit = 0; tokadd(c); } while ((c = nextc()) != -1); } pushback(c); tokfix(); if (toklen() == start) { no_digits(); } else if (nondigit) goto trailing_uc; suffix = number_literal_suffix(NUM_SUFFIX_ALL); return set_integer_literal(rb_cstr_to_inum(tok(), 2, FALSE), suffix); } if (c == 'd' || c == 'D') { /* decimal */ c = nextc(); if (c != -1 && ISDIGIT(c)) { do { if (c == '_') { if (nondigit) break; nondigit = c; continue; } if (!ISDIGIT(c)) break; nondigit = 0; tokadd(c); } while ((c = nextc()) != -1); } pushback(c); tokfix(); if (toklen() == start) { no_digits(); } else if (nondigit) goto trailing_uc; suffix = number_literal_suffix(NUM_SUFFIX_ALL); return set_integer_literal(rb_cstr_to_inum(tok(), 10, FALSE), suffix); } if (c == '_') { /* 0_0 */ goto octal_number; } if (c == 'o' || c == 'O') { /* prefixed octal */ c = nextc(); if (c == -1 || c == '_' || !ISDIGIT(c)) { no_digits(); } } if (c >= '0' && c <= '7') { /* octal */ octal_number: do { if (c == '_') { if (nondigit) break; nondigit = c; continue; } if (c < '0' || c > '9') break; if (c > '7') goto invalid_octal; nondigit = 0; tokadd(c); } while ((c = nextc()) != -1); if (toklen() > start) { pushback(c); tokfix(); if (nondigit) goto trailing_uc; suffix = number_literal_suffix(NUM_SUFFIX_ALL); return set_integer_literal(rb_cstr_to_inum(tok(), 8, FALSE), suffix); } if (nondigit) { pushback(c); goto trailing_uc; } } if (c > '7' && c <= '9') { invalid_octal: yyerror0("Invalid octal digit"); } else if (c == '.' || c == 'e' || c == 'E') { tokadd('0'); } else { pushback(c); suffix = number_literal_suffix(NUM_SUFFIX_ALL); return set_integer_literal(INT2FIX(0), suffix); } } for (;;) { switch (c) { case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': nondigit = 0; tokadd(c); break; case '.': if (nondigit) goto trailing_uc; if (seen_point || seen_e) { goto decode_num; } else { int c0 = nextc(); if (c0 == -1 || !ISDIGIT(c0)) { pushback(c0); goto decode_num; } c = c0; } seen_point = toklen(); tokadd('.'); tokadd(c); is_float++; nondigit = 0; break; case 'e': case 'E': if (nondigit) { pushback(c); c = nondigit; goto decode_num; } if (seen_e) { goto decode_num; } nondigit = c; c = nextc(); if (c != '-' && c != '+' && !ISDIGIT(c)) { pushback(c); nondigit = 0; goto decode_num; } tokadd(nondigit); seen_e++; is_float++; tokadd(c); nondigit = (c == '-' || c == '+') ? c : 0; break; case '_': /* `_' in number just ignored */ if (nondigit) goto decode_num; nondigit = c; break; default: goto decode_num; } c = nextc(); } decode_num: pushback(c); if (nondigit) { char tmp[30]; trailing_uc: literal_flush(lex_p - 1); snprintf(tmp, sizeof(tmp), "trailing `%c' in number", nondigit); yyerror0(tmp); } tokfix(); if (is_float) { int type = tFLOAT; VALUE v; suffix = number_literal_suffix(seen_e ? NUM_SUFFIX_I : NUM_SUFFIX_ALL); if (suffix & NUM_SUFFIX_R) { type = tRATIONAL; v = parse_rational(parser, tok(), toklen(), seen_point); } else { double d = strtod(tok(), 0); if (errno == ERANGE) { rb_warning1("Float %s out of range", WARN_S(tok())); errno = 0; } v = DBL2NUM(d); } return set_number_literal(v, type, suffix); } suffix = number_literal_suffix(NUM_SUFFIX_ALL); return set_integer_literal(rb_cstr_to_inum(tok(), 10, FALSE), suffix); } static enum yytokentype parse_qmark(struct parser_params *parser, int space_seen) { rb_encoding *enc; register int c; VALUE lit; if (IS_END()) { SET_LEX_STATE(EXPR_VALUE); return '?'; } c = nextc(); if (c == -1) { compile_error(PARSER_ARG "incomplete character syntax"); return 0; } if (rb_enc_isspace(c, current_enc)) { if (!IS_ARG()) { int c2 = 0; switch (c) { case ' ': c2 = 's'; break; case '\n': c2 = 'n'; break; case '\t': c2 = 't'; break; case '\v': c2 = 'v'; break; case '\r': c2 = 'r'; break; case '\f': c2 = 'f'; break; } if (c2) { rb_warn1("invalid character syntax; use ?\\%c", WARN_I(c2)); } } ternary: pushback(c); SET_LEX_STATE(EXPR_VALUE); return '?'; } newtok(); enc = current_enc; if (!parser_isascii()) { if (tokadd_mbchar(c) == -1) return 0; } else if ((rb_enc_isalnum(c, current_enc) || c == '_') && lex_p < lex_pend && is_identchar(lex_p, lex_pend, current_enc)) { if (space_seen) { const char *start = lex_p - 1, *p = start; do { int n = parser_precise_mbclen(parser, p); if (n < 0) return -1; p += n; } while (p < lex_pend && is_identchar(p, lex_pend, current_enc)); rb_warn2("`?' just followed by `%.*s' is interpreted as" \ " a conditional operator, put a space after `?'", WARN_I((int)(p - start)), WARN_S_L(start, (p - start))); } goto ternary; } else if (c == '\\') { if (peek('u')) { nextc(); enc = rb_utf8_encoding(); if (!parser_tokadd_utf8(parser, &enc, -1, 0, 0)) return 0; } else if (!lex_eol_p() && !(c = *lex_p, ISASCII(c))) { nextc(); if (tokadd_mbchar(c) == -1) return 0; } else { c = read_escape(0, &enc); tokadd(c); } } else { tokadd(c); } tokfix(); add_mark_object(lit = STR_NEW3(tok(), toklen(), enc, 0)); set_yylval_str(lit); SET_LEX_STATE(EXPR_END); return tCHAR; } static enum yytokentype parse_percent(struct parser_params *parser, const int space_seen, const enum lex_state_e last_state) { register int c; if (IS_BEG()) { int term; int paren; c = nextc(); quotation: if (c == -1 || !ISALNUM(c)) { term = c; c = 'Q'; } else { term = nextc(); if (rb_enc_isalnum(term, current_enc) || !parser_isascii()) { yyerror0("unknown type of %string"); return 0; } } if (c == -1 || term == -1) { compile_error(PARSER_ARG "unterminated quoted string meets end of file"); return 0; } paren = term; if (term == '(') term = ')'; else if (term == '[') term = ']'; else if (term == '{') term = '}'; else if (term == '<') term = '>'; else paren = 0; switch (c) { case 'Q': lex_strterm = NEW_STRTERM(str_dquote, term, paren); return tSTRING_BEG; case 'q': lex_strterm = NEW_STRTERM(str_squote, term, paren); return tSTRING_BEG; case 'W': lex_strterm = NEW_STRTERM(str_dword, term, paren); do {c = nextc();} while (ISSPACE(c)); pushback(c); return tWORDS_BEG; case 'w': lex_strterm = NEW_STRTERM(str_sword, term, paren); do {c = nextc();} while (ISSPACE(c)); pushback(c); return tQWORDS_BEG; case 'I': lex_strterm = NEW_STRTERM(str_dword, term, paren); do {c = nextc();} while (ISSPACE(c)); pushback(c); return tSYMBOLS_BEG; case 'i': lex_strterm = NEW_STRTERM(str_sword, term, paren); do {c = nextc();} while (ISSPACE(c)); pushback(c); return tQSYMBOLS_BEG; case 'x': lex_strterm = NEW_STRTERM(str_xquote, term, paren); return tXSTRING_BEG; case 'r': lex_strterm = NEW_STRTERM(str_regexp, term, paren); return tREGEXP_BEG; case 's': lex_strterm = NEW_STRTERM(str_ssym, term, paren); SET_LEX_STATE(EXPR_FNAME|EXPR_FITEM); return tSYMBEG; default: yyerror0("unknown type of %string"); return 0; } } if ((c = nextc()) == '=') { set_yylval_id('%'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } if (IS_SPCARG(c) || (IS_lex_state(EXPR_FITEM) && c == 's')) { goto quotation; } SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG); pushback(c); return warn_balanced('%', "%%", "string literal"); } static int tokadd_ident(struct parser_params *parser, int c) { do { if (tokadd_mbchar(c) == -1) return -1; c = nextc(); } while (parser_is_identchar()); pushback(c); return 0; } static ID tokenize_ident(struct parser_params *parser, const enum lex_state_e last_state) { ID ident = TOK_INTERN(); set_yylval_name(ident); return ident; } static int parse_numvar(struct parser_params *parser) { size_t len; int overflow; unsigned long n = ruby_scan_digits(tok()+1, toklen()-1, 10, &len, &overflow); const unsigned long nth_ref_max = ((FIXNUM_MAX < INT_MAX) ? FIXNUM_MAX : INT_MAX) >> 1; /* NTH_REF is left-shifted to be ORed with back-ref flag and * turned into a Fixnum, in compile.c */ if (overflow || n > nth_ref_max) { /* compile_error()? */ rb_warn1("`%s' is too big for a number variable, always nil", WARN_S(tok())); return 0; /* $0 is $PROGRAM_NAME, not NTH_REF */ } else { return (int)n; } } static enum yytokentype parse_gvar(struct parser_params *parser, const enum lex_state_e last_state) { register int c; SET_LEX_STATE(EXPR_END); newtok(); c = nextc(); switch (c) { case '_': /* $_: last read line string */ c = nextc(); if (parser_is_identchar()) { tokadd('$'); tokadd('_'); break; } pushback(c); c = '_'; /* fall through */ case '~': /* $~: match-data */ case '*': /* $*: argv */ case '$': /* $$: pid */ case '?': /* $?: last status */ case '!': /* $!: error string */ case '@': /* $@: error position */ case '/': /* $/: input record separator */ case '\\': /* $\: output record separator */ case ';': /* $;: field separator */ case ',': /* $,: output field separator */ case '.': /* $.: last read line number */ case '=': /* $=: ignorecase */ case ':': /* $:: load path */ case '<': /* $<: reading filename */ case '>': /* $>: default output handle */ case '\"': /* $": already loaded files */ tokadd('$'); tokadd(c); goto gvar; case '-': tokadd('$'); tokadd(c); c = nextc(); if (parser_is_identchar()) { if (tokadd_mbchar(c) == -1) return 0; } else { pushback(c); pushback('-'); return '$'; } gvar: set_yylval_name(TOK_INTERN()); return tGVAR; case '&': /* $&: last match */ case '`': /* $`: string before last match */ case '\'': /* $': string after last match */ case '+': /* $+: string matches last paren. */ if (IS_lex_state_for(last_state, EXPR_FNAME)) { tokadd('$'); tokadd(c); goto gvar; } set_yylval_node(NEW_BACK_REF(c)); return tBACK_REF; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': tokadd('$'); do { tokadd(c); c = nextc(); } while (c != -1 && ISDIGIT(c)); pushback(c); if (IS_lex_state_for(last_state, EXPR_FNAME)) goto gvar; tokfix(); set_yylval_node(NEW_NTH_REF(parse_numvar(parser))); return tNTH_REF; default: if (!parser_is_identchar()) { if (c == -1 || ISSPACE(c)) { compile_error(PARSER_ARG "`$' without identifiers is not allowed as a global variable name"); } else { pushback(c); compile_error(PARSER_ARG "`$%c' is not allowed as a global variable name", c); } return 0; } case '0': tokadd('$'); } if (tokadd_ident(parser, c)) return 0; SET_LEX_STATE(EXPR_END); tokenize_ident(parser, last_state); return tGVAR; } static enum yytokentype parse_atmark(struct parser_params *parser, const enum lex_state_e last_state) { enum yytokentype result = tIVAR; register int c = nextc(); newtok(); tokadd('@'); if (c == '@') { result = tCVAR; tokadd('@'); c = nextc(); } if (c == -1 || ISSPACE(c)) { if (result == tIVAR) { compile_error(PARSER_ARG "`@' without identifiers is not allowed as an instance variable name"); } else { compile_error(PARSER_ARG "`@@' without identifiers is not allowed as a class variable name"); } return 0; } else if (ISDIGIT(c) || !parser_is_identchar()) { pushback(c); if (result == tIVAR) { compile_error(PARSER_ARG "`@%c' is not allowed as an instance variable name", c); } else { compile_error(PARSER_ARG "`@@%c' is not allowed as a class variable name", c); } return 0; } if (tokadd_ident(parser, c)) return 0; SET_LEX_STATE(EXPR_END); tokenize_ident(parser, last_state); return result; } static enum yytokentype parse_ident(struct parser_params *parser, int c, int cmd_state) { enum yytokentype result; int mb = ENC_CODERANGE_7BIT; const enum lex_state_e last_state = lex_state; ID ident; do { if (!ISASCII(c)) mb = ENC_CODERANGE_UNKNOWN; if (tokadd_mbchar(c) == -1) return 0; c = nextc(); } while (parser_is_identchar()); if ((c == '!' || c == '?') && !peek('=')) { result = tFID; tokadd(c); } else if (c == '=' && IS_lex_state(EXPR_FNAME) && (!peek('~') && !peek('>') && (!peek('=') || (peek_n('>', 1))))) { result = tIDENTIFIER; tokadd(c); } else { result = tCONSTANT; /* assume provisionally */ pushback(c); } tokfix(); if (IS_LABEL_POSSIBLE()) { if (IS_LABEL_SUFFIX(0)) { SET_LEX_STATE(EXPR_ARG|EXPR_LABELED); nextc(); set_yylval_name(TOK_INTERN()); return tLABEL; } } if (mb == ENC_CODERANGE_7BIT && !IS_lex_state(EXPR_DOT)) { const struct kwtable *kw; /* See if it is a reserved word. */ kw = rb_reserved_word(tok(), toklen()); if (kw) { enum lex_state_e state = lex_state; SET_LEX_STATE(kw->state); if (IS_lex_state_for(state, EXPR_FNAME)) { set_yylval_name(rb_intern2(tok(), toklen())); return kw->id[0]; } if (IS_lex_state(EXPR_BEG)) { command_start = TRUE; } if (kw->id[0] == keyword_do) { if (lambda_beginning_p()) { lpar_beg = 0; --paren_nest; return keyword_do_LAMBDA; } if (COND_P()) return keyword_do_cond; if (CMDARG_P() && !IS_lex_state_for(state, EXPR_CMDARG)) return keyword_do_block; if (IS_lex_state_for(state, (EXPR_BEG | EXPR_ENDARG))) return keyword_do_block; return keyword_do; } if (IS_lex_state_for(state, (EXPR_BEG | EXPR_LABELED))) return kw->id[0]; else { if (kw->id[0] != kw->id[1]) SET_LEX_STATE(EXPR_BEG | EXPR_LABEL); return kw->id[1]; } } } if (IS_lex_state(EXPR_BEG_ANY | EXPR_ARG_ANY | EXPR_DOT)) { if (cmd_state) { SET_LEX_STATE(EXPR_CMDARG); } else { SET_LEX_STATE(EXPR_ARG); } } else if (lex_state == EXPR_FNAME) { SET_LEX_STATE(EXPR_ENDFN); } else { SET_LEX_STATE(EXPR_END); } ident = tokenize_ident(parser, last_state); if (result == tCONSTANT && is_local_id(ident)) result = tIDENTIFIER; if (!IS_lex_state_for(last_state, EXPR_DOT|EXPR_FNAME) && (result == tIDENTIFIER) && /* not EXPR_FNAME, not attrasgn */ lvar_defined(ident)) { SET_LEX_STATE(EXPR_END|EXPR_LABEL); } return result; } static enum yytokentype parser_yylex(struct parser_params *parser) { register int c; int space_seen = 0; int cmd_state; int label; enum lex_state_e last_state; int fallthru = FALSE; int token_seen = parser->token_seen; if (lex_strterm) { if (lex_strterm->flags & STRTERM_HEREDOC) { return here_document(&lex_strterm->u.heredoc); } else { return parse_string(&lex_strterm->u.literal); } } cmd_state = command_start; command_start = FALSE; parser->token_seen = TRUE; retry: last_state = lex_state; #ifndef RIPPER token_flush(parser); #endif switch (c = nextc()) { case '\0': /* NUL */ case '\004': /* ^D */ case '\032': /* ^Z */ case -1: /* end of script. */ return 0; /* white spaces */ case ' ': case '\t': case '\f': case '\r': case '\13': /* '\v' */ space_seen = 1; #ifdef RIPPER while ((c = nextc())) { switch (c) { case ' ': case '\t': case '\f': case '\r': case '\13': /* '\v' */ break; default: goto outofloop; } } outofloop: pushback(c); dispatch_scan_event(tSP); #endif goto retry; case '#': /* it's a comment */ parser->token_seen = token_seen; /* no magic_comment in shebang line */ if (!parser_magic_comment(parser, lex_p, lex_pend - lex_p)) { if (comment_at_top(parser)) { set_file_encoding(parser, lex_p, lex_pend); } } lex_p = lex_pend; dispatch_scan_event(tCOMMENT); fallthru = TRUE; /* fall through */ case '\n': parser->token_seen = token_seen; c = (IS_lex_state(EXPR_BEG|EXPR_CLASS|EXPR_FNAME|EXPR_DOT) && !IS_lex_state(EXPR_LABELED)); if (c || IS_lex_state_all(EXPR_ARG|EXPR_LABELED)) { if (!fallthru) { dispatch_scan_event(tIGNORED_NL); } fallthru = FALSE; if (!c && parser->in_kwarg) { goto normal_newline; } goto retry; } while ((c = nextc())) { switch (c) { case ' ': case '\t': case '\f': case '\r': case '\13': /* '\v' */ space_seen = 1; break; case '&': case '.': { dispatch_delayed_token(tIGNORED_NL); if (peek('.') == (c == '&')) { pushback(c); dispatch_scan_event(tSP); goto retry; } } default: --ruby_sourceline; lex_nextline = lex_lastline; case -1: /* EOF no decrement*/ lex_goto_eol(parser); #ifdef RIPPER if (c != -1) { parser->tokp = lex_p; } #endif goto normal_newline; } } normal_newline: command_start = TRUE; SET_LEX_STATE(EXPR_BEG); return '\n'; case '*': if ((c = nextc()) == '*') { if ((c = nextc()) == '=') { set_yylval_id(tPOW); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } pushback(c); if (IS_SPCARG(c)) { rb_warning0("`**' interpreted as argument prefix"); c = tDSTAR; } else if (IS_BEG()) { c = tDSTAR; } else { c = warn_balanced((enum ruby_method_ids)tPOW, "**", "argument prefix"); } } else { if (c == '=') { set_yylval_id('*'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } pushback(c); if (IS_SPCARG(c)) { rb_warning0("`*' interpreted as argument prefix"); c = tSTAR; } else if (IS_BEG()) { c = tSTAR; } else { c = warn_balanced('*', "*", "argument prefix"); } } SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG); return c; case '!': c = nextc(); if (IS_AFTER_OPERATOR()) { SET_LEX_STATE(EXPR_ARG); if (c == '@') { return '!'; } } else { SET_LEX_STATE(EXPR_BEG); } if (c == '=') { return tNEQ; } if (c == '~') { return tNMATCH; } pushback(c); return '!'; case '=': if (was_bol()) { /* skip embedded rd document */ if (strncmp(lex_p, "begin", 5) == 0 && ISSPACE(lex_p[5])) { int first_p = TRUE; lex_goto_eol(parser); dispatch_scan_event(tEMBDOC_BEG); for (;;) { lex_goto_eol(parser); if (!first_p) { dispatch_scan_event(tEMBDOC); } first_p = FALSE; c = nextc(); if (c == -1) { compile_error(PARSER_ARG "embedded document meets end of file"); return 0; } if (c != '=') continue; if (c == '=' && strncmp(lex_p, "end", 3) == 0 && (lex_p + 3 == lex_pend || ISSPACE(lex_p[3]))) { break; } } lex_goto_eol(parser); dispatch_scan_event(tEMBDOC_END); goto retry; } } SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG); if ((c = nextc()) == '=') { if ((c = nextc()) == '=') { return tEQQ; } pushback(c); return tEQ; } if (c == '~') { return tMATCH; } else if (c == '>') { return tASSOC; } pushback(c); return '='; case '<': last_state = lex_state; c = nextc(); if (c == '<' && !IS_lex_state(EXPR_DOT | EXPR_CLASS) && !IS_END() && (!IS_ARG() || IS_lex_state(EXPR_LABELED) || space_seen)) { int token = heredoc_identifier(); if (token) return token; } if (IS_AFTER_OPERATOR()) { SET_LEX_STATE(EXPR_ARG); } else { if (IS_lex_state(EXPR_CLASS)) command_start = TRUE; SET_LEX_STATE(EXPR_BEG); } if (c == '=') { if ((c = nextc()) == '>') { return tCMP; } pushback(c); return tLEQ; } if (c == '<') { if ((c = nextc()) == '=') { set_yylval_id(tLSHFT); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } pushback(c); return warn_balanced((enum ruby_method_ids)tLSHFT, "<<", "here document"); } pushback(c); return '<'; case '>': SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG); if ((c = nextc()) == '=') { return tGEQ; } if (c == '>') { if ((c = nextc()) == '=') { set_yylval_id(tRSHFT); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } pushback(c); return tRSHFT; } pushback(c); return '>'; case '"': label = (IS_LABEL_POSSIBLE() ? str_label : 0); lex_strterm = NEW_STRTERM(str_dquote | label, '"', 0); return tSTRING_BEG; case '`': if (IS_lex_state(EXPR_FNAME)) { SET_LEX_STATE(EXPR_ENDFN); return c; } if (IS_lex_state(EXPR_DOT)) { if (cmd_state) SET_LEX_STATE(EXPR_CMDARG); else SET_LEX_STATE(EXPR_ARG); return c; } lex_strterm = NEW_STRTERM(str_xquote, '`', 0); return tXSTRING_BEG; case '\'': label = (IS_LABEL_POSSIBLE() ? str_label : 0); lex_strterm = NEW_STRTERM(str_squote | label, '\'', 0); return tSTRING_BEG; case '?': return parse_qmark(parser, space_seen); case '&': if ((c = nextc()) == '&') { SET_LEX_STATE(EXPR_BEG); if ((c = nextc()) == '=') { set_yylval_id(tANDOP); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } pushback(c); return tANDOP; } else if (c == '=') { set_yylval_id('&'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } else if (c == '.') { SET_LEX_STATE(EXPR_DOT); return tANDDOT; } pushback(c); if (IS_SPCARG(c)) { if ((c != ':') || (c = peekc_n(1)) == -1 || !(c == '\'' || c == '"' || is_identchar((lex_p+1), lex_pend, current_enc))) { rb_warning0("`&' interpreted as argument prefix"); } c = tAMPER; } else if (IS_BEG()) { c = tAMPER; } else { c = warn_balanced('&', "&", "argument prefix"); } SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG); return c; case '|': if ((c = nextc()) == '|') { SET_LEX_STATE(EXPR_BEG); if ((c = nextc()) == '=') { set_yylval_id(tOROP); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } pushback(c); return tOROP; } if (c == '=') { set_yylval_id('|'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG|EXPR_LABEL); pushback(c); return '|'; case '+': c = nextc(); if (IS_AFTER_OPERATOR()) { SET_LEX_STATE(EXPR_ARG); if (c == '@') { return tUPLUS; } pushback(c); return '+'; } if (c == '=') { set_yylval_id('+'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous('+'))) { SET_LEX_STATE(EXPR_BEG); pushback(c); if (c != -1 && ISDIGIT(c)) { return parse_numeric(parser, '+'); } return tUPLUS; } SET_LEX_STATE(EXPR_BEG); pushback(c); return warn_balanced('+', "+", "unary operator"); case '-': c = nextc(); if (IS_AFTER_OPERATOR()) { SET_LEX_STATE(EXPR_ARG); if (c == '@') { return tUMINUS; } pushback(c); return '-'; } if (c == '=') { set_yylval_id('-'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } if (c == '>') { SET_LEX_STATE(EXPR_ENDFN); token_info_push("->"); return tLAMBDA; } if (IS_BEG() || (IS_SPCARG(c) && arg_ambiguous('-'))) { SET_LEX_STATE(EXPR_BEG); pushback(c); if (c != -1 && ISDIGIT(c)) { return tUMINUS_NUM; } return tUMINUS; } SET_LEX_STATE(EXPR_BEG); pushback(c); return warn_balanced('-', "-", "unary operator"); case '.': SET_LEX_STATE(EXPR_BEG); if ((c = nextc()) == '.') { if ((c = nextc()) == '.') { return tDOT3; } pushback(c); return tDOT2; } pushback(c); if (c != -1 && ISDIGIT(c)) { yyerror0("no . floating literal anymore; put 0 before dot"); } SET_LEX_STATE(EXPR_DOT); return '.'; case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': return parse_numeric(parser, c); case ')': case ']': paren_nest--; case '}': COND_LEXPOP(); CMDARG_LEXPOP(); if (c == ')') SET_LEX_STATE(EXPR_ENDFN); else SET_LEX_STATE(EXPR_END); if (c == '}') { if (!brace_nest--) c = tSTRING_DEND; } return c; case ':': c = nextc(); if (c == ':') { if (IS_BEG() || IS_lex_state(EXPR_CLASS) || IS_SPCARG(-1)) { SET_LEX_STATE(EXPR_BEG); return tCOLON3; } SET_LEX_STATE(EXPR_DOT); return tCOLON2; } if (IS_END() || ISSPACE(c) || c == '#') { pushback(c); c = warn_balanced(':', ":", "symbol literal"); SET_LEX_STATE(EXPR_BEG); return c; } switch (c) { case '\'': lex_strterm = NEW_STRTERM(str_ssym, c, 0); break; case '"': lex_strterm = NEW_STRTERM(str_dsym, c, 0); break; default: pushback(c); break; } SET_LEX_STATE(EXPR_FNAME); return tSYMBEG; case '/': if (IS_BEG()) { lex_strterm = NEW_STRTERM(str_regexp, '/', 0); return tREGEXP_BEG; } if ((c = nextc()) == '=') { set_yylval_id('/'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } pushback(c); if (IS_SPCARG(c)) { (void)arg_ambiguous('/'); lex_strterm = NEW_STRTERM(str_regexp, '/', 0); return tREGEXP_BEG; } SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG); return warn_balanced('/', "/", "regexp literal"); case '^': if ((c = nextc()) == '=') { set_yylval_id('^'); SET_LEX_STATE(EXPR_BEG); return tOP_ASGN; } SET_LEX_STATE(IS_AFTER_OPERATOR() ? EXPR_ARG : EXPR_BEG); pushback(c); return '^'; case ';': SET_LEX_STATE(EXPR_BEG); command_start = TRUE; return ';'; case ',': SET_LEX_STATE(EXPR_BEG|EXPR_LABEL); return ','; case '~': if (IS_AFTER_OPERATOR()) { if ((c = nextc()) != '@') { pushback(c); } SET_LEX_STATE(EXPR_ARG); } else { SET_LEX_STATE(EXPR_BEG); } return '~'; case '(': if (IS_BEG()) { c = tLPAREN; } else if (!space_seen) { /* foo( ... ) => method call, no ambiguity */ } else if (IS_ARG() || IS_lex_state_all(EXPR_END|EXPR_LABEL)) { c = tLPAREN_ARG; } else if (IS_lex_state(EXPR_ENDFN) && !lambda_beginning_p()) { rb_warning0("parentheses after method name is interpreted as " "an argument list, not a decomposed argument"); } paren_nest++; COND_PUSH(0); CMDARG_PUSH(0); SET_LEX_STATE(EXPR_BEG|EXPR_LABEL); return c; case '[': paren_nest++; if (IS_AFTER_OPERATOR()) { if ((c = nextc()) == ']') { SET_LEX_STATE(EXPR_ARG); if ((c = nextc()) == '=') { return tASET; } pushback(c); return tAREF; } pushback(c); SET_LEX_STATE(EXPR_ARG|EXPR_LABEL); return '['; } else if (IS_BEG()) { c = tLBRACK; } else if (IS_ARG() && (space_seen || IS_lex_state(EXPR_LABELED))) { c = tLBRACK; } SET_LEX_STATE(EXPR_BEG|EXPR_LABEL); COND_PUSH(0); CMDARG_PUSH(0); return c; case '{': ++brace_nest; if (lambda_beginning_p()) { SET_LEX_STATE(EXPR_BEG); lpar_beg = 0; --paren_nest; COND_PUSH(0); CMDARG_PUSH(0); return tLAMBEG; } if (IS_lex_state(EXPR_LABELED)) c = tLBRACE; /* hash */ else if (IS_lex_state(EXPR_ARG_ANY | EXPR_END | EXPR_ENDFN)) c = '{'; /* block (primary) */ else if (IS_lex_state(EXPR_ENDARG)) c = tLBRACE_ARG; /* block (expr) */ else c = tLBRACE; /* hash */ COND_PUSH(0); CMDARG_PUSH(0); SET_LEX_STATE(c == tLBRACE_ARG ? EXPR_BEG : EXPR_BEG|EXPR_LABEL); if (c != tLBRACE) command_start = TRUE; return c; case '\\': c = nextc(); if (c == '\n') { space_seen = 1; dispatch_scan_event(tSP); goto retry; /* skip \\n */ } pushback(c); return '\\'; case '%': return parse_percent(parser, space_seen, last_state); case '$': return parse_gvar(parser, last_state); case '@': return parse_atmark(parser, last_state); case '_': if (was_bol() && whole_match_p("__END__", 7, 0)) { ruby__end__seen = 1; parser->eofp = 1; #ifndef RIPPER return -1; #else lex_goto_eol(parser); dispatch_scan_event(k__END__); return 0; #endif } newtok(); break; default: if (!parser_is_identchar()) { compile_error(PARSER_ARG "Invalid char `\\x%02X' in expression", c); goto retry; } newtok(); break; } return parse_ident(parser, c, cmd_state); } static enum yytokentype yylex(YYSTYPE *lval, YYLTYPE *yylloc, struct parser_params *parser) { enum yytokentype t; parser->lval = lval; lval->val = Qundef; t = parser_yylex(parser); if (has_delayed_token()) dispatch_delayed_token(t); else if (t != 0) dispatch_scan_event(t); yylloc->first_line = ruby_sourceline; yylloc->first_column = (int)(parser->tokp - lex_pbeg); yylloc->last_column = (int)(lex_p - lex_pbeg); return t; } #define LVAR_USED ((ID)1 << (sizeof(ID) * CHAR_BIT - 1)) static NODE* node_newnode(struct parser_params *parser, enum node_type type, VALUE a0, VALUE a1, VALUE a2) { NODE *n = rb_ast_newnode(parser->ast); rb_node_init(n, type, a0, a1, a2); nd_set_line(n, ruby_sourceline); /* mark not cared lineno to 0 and column to -1 */ nd_set_lineno(n, 0); nd_set_column(n, -1); return n; } #ifndef RIPPER static enum node_type nodetype(NODE *node) /* for debug */ { return (enum node_type)nd_type(node); } static int nodeline(NODE *node) { return nd_line(node); } static NODE* newline_node(NODE *node) { if (node) { node = remove_begin(node); node->flags |= NODE_FL_NEWLINE; } return node; } static void fixpos(NODE *node, NODE *orig) { if (!node) return; if (!orig) return; nd_set_line(node, nd_line(orig)); } static void parser_warning(struct parser_params *parser, NODE *node, const char *mesg) { rb_compile_warning(ruby_sourcefile, nd_line(node), "%s", mesg); } #define parser_warning(node, mesg) parser_warning(parser, (node), (mesg)) static void parser_warn(struct parser_params *parser, NODE *node, const char *mesg) { rb_compile_warn(ruby_sourcefile, nd_line(node), "%s", mesg); } #define parser_warn(node, mesg) parser_warn(parser, (node), (mesg)) static NODE* block_append_gen(struct parser_params *parser, NODE *head, NODE *tail, YYLTYPE *location) { NODE *end, *h = head, *nd; if (tail == 0) return head; if (h == 0) return tail; switch (nd_type(h)) { case NODE_LIT: case NODE_STR: case NODE_SELF: case NODE_TRUE: case NODE_FALSE: case NODE_NIL: parser_warning(h, "unused literal ignored"); return tail; default: h = end = NEW_BLOCK(head); nd_set_lineno(end, location->first_line); nd_set_column(end, location->first_column); end->nd_end = end; fixpos(end, head); head = end; break; case NODE_BLOCK: end = h->nd_end; break; } nd = end->nd_head; switch (nd_type(nd)) { case NODE_RETURN: case NODE_BREAK: case NODE_NEXT: case NODE_REDO: case NODE_RETRY: if (RTEST(ruby_verbose)) { parser_warning(tail, "statement not reached"); } break; default: break; } if (nd_type(tail) != NODE_BLOCK) { tail = NEW_BLOCK(tail); nd_set_lineno(tail, location->first_line); nd_set_column(tail, location->first_column); tail->nd_end = tail; } end->nd_next = tail; h->nd_end = tail->nd_end; return head; } /* append item to the list */ static NODE* list_append_gen(struct parser_params *parser, NODE *list, NODE *item, YYLTYPE *location) { NODE *last; if (list == 0) return new_list(item, location); if (list->nd_next) { last = list->nd_next->nd_end; } else { last = list; } list->nd_alen += 1; last->nd_next = new_list(item, location); list->nd_next->nd_end = last->nd_next; return list; } /* concat two lists */ static NODE* list_concat(NODE *head, NODE *tail) { NODE *last; if (head->nd_next) { last = head->nd_next->nd_end; } else { last = head; } head->nd_alen += tail->nd_alen; last->nd_next = tail; if (tail->nd_next) { head->nd_next->nd_end = tail->nd_next->nd_end; } else { head->nd_next->nd_end = tail; } return head; } static int literal_concat0(struct parser_params *parser, VALUE head, VALUE tail) { if (NIL_P(tail)) return 1; if (!rb_enc_compatible(head, tail)) { compile_error(PARSER_ARG "string literal encodings differ (%s / %s)", rb_enc_name(rb_enc_get(head)), rb_enc_name(rb_enc_get(tail))); rb_str_resize(head, 0); rb_str_resize(tail, 0); return 0; } rb_str_buf_append(head, tail); return 1; } /* concat two string literals */ static NODE * literal_concat_gen(struct parser_params *parser, NODE *head, NODE *tail, YYLTYPE *location) { enum node_type htype; NODE *headlast; VALUE lit; if (!head) return tail; if (!tail) return head; htype = nd_type(head); if (htype == NODE_EVSTR) { NODE *node = new_dstr(STR_NEW0(), location); head = list_append(node, head, location); htype = NODE_DSTR; } if (heredoc_indent > 0) { switch (htype) { case NODE_STR: nd_set_type(head, NODE_DSTR); case NODE_DSTR: return list_append(head, tail, location); default: break; } } switch (nd_type(tail)) { case NODE_STR: if (htype == NODE_DSTR && (headlast = head->nd_next->nd_end->nd_head) && nd_type(headlast) == NODE_STR) { htype = NODE_STR; lit = headlast->nd_lit; } else { lit = head->nd_lit; } if (htype == NODE_STR) { if (!literal_concat0(parser, lit, tail->nd_lit)) { error: rb_discard_node(head); rb_discard_node(tail); return 0; } rb_discard_node(tail); } else { list_append(head, tail, location); } break; case NODE_DSTR: if (htype == NODE_STR) { if (!literal_concat0(parser, head->nd_lit, tail->nd_lit)) goto error; tail->nd_lit = head->nd_lit; rb_discard_node(head); head = tail; } else if (NIL_P(tail->nd_lit)) { append: head->nd_alen += tail->nd_alen - 1; head->nd_next->nd_end->nd_next = tail->nd_next; head->nd_next->nd_end = tail->nd_next->nd_end; rb_discard_node(tail); } else if (htype == NODE_DSTR && (headlast = head->nd_next->nd_end->nd_head) && nd_type(headlast) == NODE_STR) { lit = headlast->nd_lit; if (!literal_concat0(parser, lit, tail->nd_lit)) goto error; tail->nd_lit = Qnil; goto append; } else { nd_set_type(tail, NODE_ARRAY); tail->nd_head = new_str(tail->nd_lit, location); list_concat(head, tail); } break; case NODE_EVSTR: if (htype == NODE_STR) { nd_set_type(head, NODE_DSTR); head->nd_alen = 1; } list_append(head, tail, location); break; } return head; } static NODE * evstr2dstr_gen(struct parser_params *parser, NODE *node, YYLTYPE *location) { if (nd_type(node) == NODE_EVSTR) { node = list_append(new_dstr(STR_NEW0(), location), node, location); } return node; } static NODE * new_evstr_gen(struct parser_params *parser, NODE *node, YYLTYPE *location) { NODE *head = node; NODE *evstr; if (node) { switch (nd_type(node)) { case NODE_STR: case NODE_DSTR: case NODE_EVSTR: return node; } } evstr = NEW_EVSTR(head); nd_set_lineno(evstr, location->first_line); nd_set_column(evstr, location->first_column); return evstr; } static NODE * call_bin_op_gen(struct parser_params *parser, NODE *recv, ID id, NODE *arg1, YYLTYPE *location) { NODE *expr; value_expr(recv); value_expr(arg1); expr = NEW_OPCALL(recv, id, new_list(arg1, location)); fixpos(expr, recv); nd_set_lineno(expr, location->first_line); nd_set_column(expr, location->first_column); return expr; } static NODE * call_uni_op_gen(struct parser_params *parser, NODE *recv, ID id, YYLTYPE *location) { NODE *opcall; value_expr(recv); opcall = NEW_OPCALL(recv, id, 0); nd_set_lineno(opcall, location->first_line); nd_set_column(opcall, location->first_column); return opcall; } static NODE * new_qcall_gen(struct parser_params* parser, ID atype, NODE *recv, ID mid, NODE *args, YYLTYPE *location) { NODE *qcall = NEW_QCALL(atype, recv, mid, args); nd_set_lineno(qcall, location->first_line); nd_set_column(qcall, location->first_column); return qcall; } #define nd_once_body(node) (nd_type(node) == NODE_SCOPE ? (node)->nd_body : node) static NODE* match_op_gen(struct parser_params *parser, NODE *node1, NODE *node2, YYLTYPE *location) { NODE *n; value_expr(node1); value_expr(node2); if (node1 && (n = nd_once_body(node1)) != 0) { switch (nd_type(n)) { case NODE_DREGX: { NODE *match = NEW_MATCH2(node1, node2); nd_set_lineno(match, location->first_line); nd_set_column(match, location->first_column); return match; } case NODE_LIT: if (RB_TYPE_P(n->nd_lit, T_REGEXP)) { const VALUE lit = n->nd_lit; NODE *match = NEW_MATCH2(node1, node2); match->nd_args = reg_named_capture_assign(lit, location); nd_set_lineno(match, location->first_line); nd_set_column(match, location->first_column); return match; } } } if (node2 && (n = nd_once_body(node2)) != 0) { NODE *match3; switch (nd_type(n)) { case NODE_DREGX: match3 = NEW_MATCH3(node2, node1); nd_set_lineno(match3, location->first_line); nd_set_column(match3, location->first_column); return match3; case NODE_LIT: if (RB_TYPE_P(n->nd_lit, T_REGEXP)) { match3 = NEW_MATCH3(node2, node1); nd_set_lineno(match3, location->first_line); nd_set_column(match3, location->first_column); return match3; } } } return new_call(node1, tMATCH, new_list(node2, location), location); } # if WARN_PAST_SCOPE static int past_dvar_p(struct parser_params *parser, ID id) { struct vtable *past = lvtbl->past; while (past) { if (vtable_included(past, id)) return 1; past = past->prev; } return 0; } # endif static NODE* gettable_gen(struct parser_params *parser, ID id, YYLTYPE *location) { ID *vidp = NULL; NODE *node; switch (id) { case keyword_self: node = NEW_SELF(); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); return node; case keyword_nil: node = NEW_NIL(); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); return node; case keyword_true: node = NEW_TRUE(); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); return node; case keyword_false: node = NEW_FALSE(); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); return node; case keyword__FILE__: node = new_str(rb_str_dup(ruby_sourcefile_string), location); return node; case keyword__LINE__: return new_lit(INT2FIX(tokline), location); case keyword__ENCODING__: return new_lit(rb_enc_from_encoding(current_enc), location); } switch (id_type(id)) { case ID_LOCAL: if (dyna_in_block() && dvar_defined_ref(id, vidp)) { if (id == current_arg) { rb_warn1("circular argument reference - %"PRIsWARN, rb_id2str(id)); } if (vidp) *vidp |= LVAR_USED; node = new_dvar(id, location); return node; } if (local_id_ref(id, vidp)) { if (id == current_arg) { rb_warn1("circular argument reference - %"PRIsWARN, rb_id2str(id)); } if (vidp) *vidp |= LVAR_USED; node = new_lvar(id, location); return node; } # if WARN_PAST_SCOPE if (!in_defined && RTEST(ruby_verbose) && past_dvar_p(parser, id)) { rb_warning1("possible reference to past scope - %"PRIsWARN, rb_id2str(id)); } # endif /* method call without arguments */ node = NEW_VCALL(id); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); return node; case ID_GLOBAL: node = new_gvar(id, location); return node; case ID_INSTANCE: node = new_ivar(id, location); return node; case ID_CONST: node = NEW_CONST(id); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); return node; case ID_CLASS: node = NEW_CVAR(id); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); return node; } compile_error(PARSER_ARG "identifier %"PRIsVALUE" is not valid to get", rb_id2str(id)); return 0; } static NODE * kwd_append(NODE *kwlist, NODE *kw) { if (kwlist) { NODE *kws = kwlist; while (kws->nd_next) { kws = kws->nd_next; } kws->nd_next = kw; } return kwlist; } static NODE * new_defined_gen(struct parser_params *parser, NODE *expr, YYLTYPE *location) { NODE *defined = NEW_DEFINED(remove_begin_all(expr)); nd_set_lineno(defined, location->first_line); nd_set_column(defined, location->first_column); return defined; } static NODE * new_regexp_gen(struct parser_params *parser, NODE *node, int options, YYLTYPE *location) { NODE *list, *prev; VALUE lit; if (!node) { return new_lit(reg_compile(STR_NEW0(), options), location); } switch (nd_type(node)) { case NODE_STR: { VALUE src = node->nd_lit; nd_set_type(node, NODE_LIT); add_mark_object(node->nd_lit = reg_compile(src, options)); } break; default: add_mark_object(lit = STR_NEW0()); node = NEW_NODE(NODE_DSTR, lit, 1, new_list(node, location)); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); case NODE_DSTR: nd_set_type(node, NODE_DREGX); node->nd_cflag = options & RE_OPTION_MASK; if (!NIL_P(node->nd_lit)) reg_fragment_check(node->nd_lit, options); for (list = (prev = node)->nd_next; list; list = list->nd_next) { if (nd_type(list->nd_head) == NODE_STR) { VALUE tail = list->nd_head->nd_lit; if (reg_fragment_check(tail, options) && prev && !NIL_P(prev->nd_lit)) { VALUE lit = prev == node ? prev->nd_lit : prev->nd_head->nd_lit; if (!literal_concat0(parser, lit, tail)) { node = 0; break; } rb_str_resize(tail, 0); prev->nd_next = list->nd_next; rb_discard_node(list->nd_head); rb_discard_node(list); list = prev; } else { prev = list; } } else { prev = 0; } } if (!node->nd_next) { VALUE src = node->nd_lit; nd_set_type(node, NODE_LIT); add_mark_object(node->nd_lit = reg_compile(src, options)); } if (options & RE_OPTION_ONCE) { node = NEW_NODE(NODE_SCOPE, 0, node, 0); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); } break; } return node; } static NODE * new_lit_gen(struct parser_params *parser, VALUE sym, YYLTYPE *location) { NODE *lit = NEW_LIT(sym); add_mark_object(sym); nd_set_lineno(lit, location->first_line); nd_set_column(lit, location->first_column); return lit; } static NODE * new_list_gen(struct parser_params *parser, NODE *item, YYLTYPE *location) { NODE *list = NEW_LIST(item); nd_set_lineno(list, location->first_line); nd_set_column(list, location->first_column); return list; } static NODE * new_str_gen(struct parser_params *parser, VALUE str, YYLTYPE *location) { NODE *nd_str = NEW_STR(str); add_mark_object(str); nd_set_lineno(nd_str, location->first_line); nd_set_column(nd_str, location->first_column); return nd_str; } static NODE * new_dvar_gen(struct parser_params *parser, ID id, YYLTYPE *location) { NODE *dvar = NEW_DVAR(id); nd_set_lineno(dvar, location->first_line); nd_set_column(dvar, location->first_column); return dvar; } static NODE * new_resbody_gen(struct parser_params *parser, NODE *exc_list, NODE *stmt, NODE *rescue, YYLTYPE *location) { NODE *resbody = NEW_RESBODY(exc_list, stmt, rescue); nd_set_lineno(resbody, location->first_line); nd_set_column(resbody, location->first_column); return resbody; } static NODE * new_errinfo_gen(struct parser_params *parser, YYLTYPE *location) { NODE *errinfo = NEW_ERRINFO(); nd_set_lineno(errinfo, location->first_line); nd_set_column(errinfo, location->first_column); return errinfo; } static NODE * new_call_gen(struct parser_params *parser, NODE *recv, ID mid, NODE *args, YYLTYPE *location) { NODE *call = NEW_CALL(recv, mid, args); nd_set_lineno(call, location->first_line); nd_set_column(call, location->first_column); return call; } static NODE * new_fcall_gen(struct parser_params *parser, ID mid, NODE *args, YYLTYPE *location) { NODE *fcall = NEW_FCALL(mid, args); nd_set_lineno(fcall, location->first_line); nd_set_column(fcall, location->first_column); return fcall; } static NODE * new_for_gen(struct parser_params *parser, NODE *var, NODE *iter, NODE *body, YYLTYPE *location) { NODE *nd_for = NEW_FOR(var, iter, body); nd_set_lineno(nd_for, location->first_line); nd_set_column(nd_for, location->first_column); return nd_for; } static NODE * new_gvar_gen(struct parser_params *parser, ID id, YYLTYPE *location) { NODE *gvar = NEW_GVAR(id); nd_set_lineno(gvar, location->first_line); nd_set_column(gvar, location->first_column); return gvar; } static NODE * new_lvar_gen(struct parser_params *parser, ID id, YYLTYPE *location) { NODE *lvar = NEW_LVAR(id); nd_set_lineno(lvar, location->first_line); nd_set_column(lvar, location->first_column); return lvar; } static NODE * new_dstr_gen(struct parser_params *parser, VALUE str, YYLTYPE *location) { NODE *dstr = NEW_DSTR(str); add_mark_object(str); nd_set_lineno(dstr, location->first_line); nd_set_column(dstr, location->first_column); return dstr; } static NODE * new_rescue_gen(struct parser_params *parser, NODE *b, NODE *res, NODE *e, YYLTYPE *location) { NODE *rescue = NEW_RESCUE(b, res, e); nd_set_lineno(rescue, location->first_line); nd_set_column(rescue, location->first_column); return rescue; } static NODE * new_undef_gen(struct parser_params *parser, NODE *i, YYLTYPE *location) { NODE *undef = NEW_UNDEF(i); nd_set_lineno(undef, location->first_line); nd_set_column(undef, location->first_column); return undef; } static NODE * new_zarray_gen(struct parser_params *parser, YYLTYPE *location) { NODE *zarray = NEW_ZARRAY(); nd_set_lineno(zarray, location->first_line); nd_set_column(zarray, location->first_column); return zarray; } static NODE * new_ivar_gen(struct parser_params *parser, ID id, YYLTYPE *location) { NODE *ivar = NEW_IVAR(id); nd_set_lineno(ivar, location->first_line); nd_set_column(ivar, location->first_column); return ivar; } static NODE * new_postarg_gen(struct parser_params *parser, NODE *i, NODE *v, YYLTYPE *location) { NODE *postarg = NEW_POSTARG(i, v); nd_set_lineno(postarg, location->first_line); nd_set_column(postarg, location->first_column); return postarg; } static NODE * new_cdecl_gen(struct parser_params *parser, ID v, NODE *val, NODE *path, YYLTYPE *location) { NODE *nd_cdecl = NEW_CDECL(v, val, path); nd_set_lineno(nd_cdecl, location->first_line); nd_set_column(nd_cdecl, location->first_column); return nd_cdecl; } static NODE * new_scope_gen(struct parser_params *parser, NODE *a, NODE *b, YYLTYPE *location) { NODE *scope = NEW_SCOPE(a, b); nd_set_lineno(scope, location->first_line); nd_set_column(scope, location->first_column); return scope; } static NODE * new_begin_gen(struct parser_params *parser, NODE *b, YYLTYPE *location) { NODE *begin = NEW_BEGIN(b); nd_set_lineno(begin, location->first_line); nd_set_column(begin, location->first_column); return begin; } static NODE * new_masgn_gen(struct parser_params *parser, NODE *l, NODE *r, YYLTYPE *location) { NODE *masgn = NEW_MASGN(l, r); nd_set_lineno(masgn, location->first_line); nd_set_column(masgn, location->first_column); return masgn; } static NODE * new_kw_arg_gen(struct parser_params *parser, NODE *k, YYLTYPE *location) { NODE *kw_arg; if (!k) return 0; kw_arg = NEW_KW_ARG(0, (k)); nd_set_lineno(kw_arg, location->first_line); nd_set_column(kw_arg, location->first_column); return kw_arg; } static NODE * new_xstring_gen(struct parser_params *parser, NODE *node, YYLTYPE *location) { if (!node) { VALUE lit = STR_NEW0(); NODE *xstr = NEW_XSTR(lit); add_mark_object(lit); nd_set_lineno(xstr, location->first_line); nd_set_column(xstr, location->first_column); return xstr; } switch (nd_type(node)) { case NODE_STR: nd_set_type(node, NODE_XSTR); break; case NODE_DSTR: nd_set_type(node, NODE_DXSTR); break; default: node = NEW_NODE(NODE_DXSTR, Qnil, 1, new_list(node, location)); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); break; } return node; } static NODE * new_body_gen(struct parser_params *parser, NODE *param, NODE *stmt, YYLTYPE *location) { NODE *iter = NEW_ITER(param, stmt); nd_set_lineno(iter->nd_body, location->first_line); nd_set_column(iter->nd_body, location->first_column); nd_set_lineno(iter, location->first_line); nd_set_column(iter, location->first_column); return iter; } #else /* !RIPPER */ static int id_is_var_gen(struct parser_params *parser, ID id) { if (is_notop_id(id)) { switch (id & ID_SCOPE_MASK) { case ID_GLOBAL: case ID_INSTANCE: case ID_CONST: case ID_CLASS: return 1; case ID_LOCAL: if (dyna_in_block() && dvar_defined(id)) return 1; if (local_id(id)) return 1; /* method call without arguments */ return 0; } } compile_error(PARSER_ARG "identifier %"PRIsVALUE" is not valid to get", rb_id2str(id)); return 0; } static VALUE new_regexp_gen(struct parser_params *parser, VALUE re, VALUE opt) { VALUE src = 0, err; int options = 0; if (ripper_is_node_yylval(re)) { src = RNODE(re)->nd_cval; re = RNODE(re)->nd_rval; } if (ripper_is_node_yylval(opt)) { options = (int)RNODE(opt)->nd_tag; opt = RNODE(opt)->nd_rval; } if (src && NIL_P(parser_reg_compile(parser, src, options, &err))) { compile_error(PARSER_ARG "%"PRIsVALUE, err); } return dispatch2(regexp_literal, re, opt); } static VALUE new_xstring_gen(struct parser_params *parser, VALUE str) { return dispatch1(xstring_literal, str); } #endif /* !RIPPER */ #ifndef RIPPER const char rb_parser_lex_state_names[][13] = { "EXPR_BEG", "EXPR_END", "EXPR_ENDARG", "EXPR_ENDFN", "EXPR_ARG", "EXPR_CMDARG", "EXPR_MID", "EXPR_FNAME", "EXPR_DOT", "EXPR_CLASS", "EXPR_LABEL", "EXPR_LABELED","EXPR_FITEM", }; static VALUE append_lex_state_name(enum lex_state_e state, VALUE buf) { int i, sep = 0; unsigned int mask = 1; static const char none[] = "EXPR_NONE"; for (i = 0; i < EXPR_MAX_STATE; ++i, mask <<= 1) { if ((unsigned)state & mask) { if (sep) { rb_str_cat(buf, "|", 1); } sep = 1; rb_str_cat_cstr(buf, rb_parser_lex_state_names[i]); } } if (!sep) { rb_str_cat(buf, none, sizeof(none)-1); } return buf; } static void flush_debug_buffer(struct parser_params *parser, VALUE out, VALUE str) { VALUE mesg = parser->debug_buffer; if (!NIL_P(mesg) && RSTRING_LEN(mesg)) { parser->debug_buffer = Qnil; rb_io_puts(1, &mesg, out); } if (!NIL_P(str) && RSTRING_LEN(str)) { rb_io_write(parser->debug_output, str); } } enum lex_state_e rb_parser_trace_lex_state(struct parser_params *parser, enum lex_state_e from, enum lex_state_e to, int line) { VALUE mesg; mesg = rb_str_new_cstr("lex_state: "); append_lex_state_name(from, mesg); rb_str_cat_cstr(mesg, " -> "); append_lex_state_name(to, mesg); rb_str_catf(mesg, " at line %d\n", line); flush_debug_buffer(parser, parser->debug_output, mesg); return to; } VALUE rb_parser_lex_state_name(enum lex_state_e state) { return rb_fstring(append_lex_state_name(state, rb_str_new(0, 0))); } static void append_bitstack_value(stack_type stack, VALUE mesg) { if (stack == 0) { rb_str_cat_cstr(mesg, "0"); } else { stack_type mask = (stack_type)1U << (CHAR_BIT * sizeof(stack_type) - 1); for (; mask && !(stack & mask); mask >>= 1) continue; for (; mask; mask >>= 1) rb_str_cat(mesg, stack & mask ? "1" : "0", 1); } } void rb_parser_show_bitstack(struct parser_params *parser, stack_type stack, const char *name, int line) { VALUE mesg = rb_sprintf("%s: ", name); append_bitstack_value(stack, mesg); rb_str_catf(mesg, " at line %d\n", line); flush_debug_buffer(parser, parser->debug_output, mesg); } void rb_parser_fatal(struct parser_params *parser, const char *fmt, ...) { va_list ap; VALUE mesg = rb_str_new_cstr("internal parser error: "); va_start(ap, fmt); rb_str_vcatf(mesg, fmt, ap); va_end(ap); #ifndef RIPPER parser_yyerror(parser, RSTRING_PTR(mesg)); RB_GC_GUARD(mesg); #else dispatch1(parse_error, mesg); ripper_error(); #endif /* !RIPPER */ mesg = rb_str_new(0, 0); append_lex_state_name(lex_state, mesg); compile_error(PARSER_ARG "lex_state: %"PRIsVALUE, mesg); rb_str_resize(mesg, 0); append_bitstack_value(cond_stack, mesg); compile_error(PARSER_ARG "cond_stack: %"PRIsVALUE, mesg); rb_str_resize(mesg, 0); append_bitstack_value(cmdarg_stack, mesg); compile_error(PARSER_ARG "cmdarg_stack: %"PRIsVALUE, mesg); if (parser->debug_output == rb_stdout) parser->debug_output = rb_stderr; yydebug = TRUE; } #endif /* !RIPPER */ #ifndef RIPPER static NODE* assignable_result0(NODE *node, YYLTYPE *location) { if (node) { nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); } return node; } #endif /* !RIPPER */ #ifdef RIPPER static VALUE assignable_gen(struct parser_params *parser, VALUE lhs) #else static NODE* assignable_gen(struct parser_params *parser, ID id, NODE *val, YYLTYPE *location) #endif { #ifdef RIPPER ID id = get_id(lhs); # define assignable_result(x) (lhs) # define parser_yyerror(parser, x) (lhs = assign_error_gen(parser, lhs)) #else # define assignable_result(x) assignable_result0(x, location) #endif if (!id) return assignable_result(0); switch (id) { case keyword_self: yyerror0("Can't change the value of self"); goto error; case keyword_nil: yyerror0("Can't assign to nil"); goto error; case keyword_true: yyerror0("Can't assign to true"); goto error; case keyword_false: yyerror0("Can't assign to false"); goto error; case keyword__FILE__: yyerror0("Can't assign to __FILE__"); goto error; case keyword__LINE__: yyerror0("Can't assign to __LINE__"); goto error; case keyword__ENCODING__: yyerror0("Can't assign to __ENCODING__"); goto error; } switch (id_type(id)) { case ID_LOCAL: if (dyna_in_block()) { if (dvar_curr(id)) { return assignable_result(NEW_DASGN_CURR(id, val)); } else if (dvar_defined(id)) { return assignable_result(NEW_DASGN(id, val)); } else if (local_id(id)) { return assignable_result(NEW_LASGN(id, val)); } else { dyna_var(id); return assignable_result(NEW_DASGN_CURR(id, val)); } } else { if (!local_id(id)) { local_var(id); } return assignable_result(NEW_LASGN(id, val)); } break; case ID_GLOBAL: return assignable_result(NEW_GASGN(id, val)); case ID_INSTANCE: return assignable_result(NEW_IASGN(id, val)); case ID_CONST: if (!in_def && !in_single) return assignable_result(new_cdecl(id, val, 0, location)); yyerror0("dynamic constant assignment"); break; case ID_CLASS: return assignable_result(NEW_CVASGN(id, val)); default: compile_error(PARSER_ARG "identifier %"PRIsVALUE" is not valid to set", rb_id2str(id)); } error: return assignable_result(0); #undef assignable_result #undef parser_yyerror } static int is_private_local_id(ID name) { VALUE s; if (name == idUScore) return 1; if (!is_local_id(name)) return 0; s = rb_id2str(name); if (!s) return 0; return RSTRING_PTR(s)[0] == '_'; } static int shadowing_lvar_0(struct parser_params *parser, ID name) { if (is_private_local_id(name)) return 1; if (dyna_in_block()) { if (dvar_curr(name)) { yyerror0("duplicated argument name"); } else if (dvar_defined(name) || local_id(name)) { rb_warning1("shadowing outer local variable - %"PRIsWARN, rb_id2str(name)); vtable_add(lvtbl->vars, name); if (lvtbl->used) { vtable_add(lvtbl->used, (ID)ruby_sourceline | LVAR_USED); } return 0; } } else { if (local_id(name)) { yyerror0("duplicated argument name"); } } return 1; } static ID shadowing_lvar_gen(struct parser_params *parser, ID name) { shadowing_lvar_0(parser, name); return name; } static void new_bv_gen(struct parser_params *parser, ID name) { if (!name) return; if (!is_local_id(name)) { compile_error(PARSER_ARG "invalid local variable - %"PRIsVALUE, rb_id2str(name)); return; } if (!shadowing_lvar_0(parser, name)) return; dyna_var(name); } #ifndef RIPPER static NODE * aryset_gen(struct parser_params *parser, NODE *recv, NODE *idx, YYLTYPE *location) { NODE *attrasgn = NEW_ATTRASGN(recv, tASET, idx); nd_set_lineno(attrasgn, location->first_line); nd_set_column(attrasgn, location->first_column); return attrasgn; } static void block_dup_check_gen(struct parser_params *parser, NODE *node1, NODE *node2) { if (node2 && node1 && nd_type(node1) == NODE_BLOCK_PASS) { compile_error(PARSER_ARG "both block arg and actual block given"); } } static NODE * attrset_gen(struct parser_params *parser, NODE *recv, ID atype, ID id, YYLTYPE *location) { NODE *attrasgn; if (!CALL_Q_P(atype)) id = rb_id_attrset(id); attrasgn = NEW_ATTRASGN(recv, id, 0); nd_set_lineno(attrasgn, location->first_line); nd_set_column(attrasgn, location->first_column); return attrasgn; } static void rb_backref_error_gen(struct parser_params *parser, NODE *node) { switch (nd_type(node)) { case NODE_NTH_REF: compile_error(PARSER_ARG "Can't set variable $%ld", node->nd_nth); break; case NODE_BACK_REF: compile_error(PARSER_ARG "Can't set variable $%c", (int)node->nd_nth); break; } } static NODE * arg_concat_gen(struct parser_params *parser, NODE *node1, NODE *node2, YYLTYPE *location) { NODE *argscat; if (!node2) return node1; switch (nd_type(node1)) { case NODE_BLOCK_PASS: if (node1->nd_head) node1->nd_head = arg_concat(node1->nd_head, node2, location); else node1->nd_head = new_list(node2, location); return node1; case NODE_ARGSPUSH: if (nd_type(node2) != NODE_ARRAY) break; node1->nd_body = list_concat(new_list(node1->nd_body, location), node2); nd_set_type(node1, NODE_ARGSCAT); return node1; case NODE_ARGSCAT: if (nd_type(node2) != NODE_ARRAY || nd_type(node1->nd_body) != NODE_ARRAY) break; node1->nd_body = list_concat(node1->nd_body, node2); return node1; } argscat = NEW_ARGSCAT(node1, node2); nd_set_lineno(argscat, location->first_line); nd_set_column(argscat, location->first_column); return argscat; } static NODE * arg_append_gen(struct parser_params *parser, NODE *node1, NODE *node2, YYLTYPE *location) { NODE *argspush; if (!node1) return new_list(node2, location); switch (nd_type(node1)) { case NODE_ARRAY: return list_append(node1, node2, location); case NODE_BLOCK_PASS: node1->nd_head = arg_append(node1->nd_head, node2, location); return node1; case NODE_ARGSPUSH: node1->nd_body = list_append(new_list(node1->nd_body, location), node2, location); nd_set_type(node1, NODE_ARGSCAT); return node1; } argspush = NEW_ARGSPUSH(node1, node2); nd_set_lineno(argspush, location->first_line); nd_set_column(argspush, location->first_column); return argspush; } static NODE * splat_array(NODE* node) { if (nd_type(node) == NODE_SPLAT) node = node->nd_head; if (nd_type(node) == NODE_ARRAY) return node; return 0; } static void mark_lvar_used(struct parser_params *parser, NODE *rhs) { ID *vidp = NULL; if (!rhs) return; switch (nd_type(rhs)) { case NODE_LASGN: if (local_id_ref(rhs->nd_vid, vidp)) { if (vidp) *vidp |= LVAR_USED; } break; case NODE_DASGN: case NODE_DASGN_CURR: if (dvar_defined_ref(rhs->nd_vid, vidp)) { if (vidp) *vidp |= LVAR_USED; } break; #if 0 case NODE_MASGN: for (rhs = rhs->nd_head; rhs; rhs = rhs->nd_next) { mark_lvar_used(parser, rhs->nd_head); } break; #endif } } static NODE * node_assign_gen(struct parser_params *parser, NODE *lhs, NODE *rhs, YYLTYPE *location) { if (!lhs) return 0; switch (nd_type(lhs)) { case NODE_GASGN: case NODE_IASGN: case NODE_LASGN: case NODE_DASGN: case NODE_DASGN_CURR: case NODE_MASGN: case NODE_CDECL: case NODE_CVASGN: lhs->nd_value = rhs; break; case NODE_ATTRASGN: case NODE_CALL: lhs->nd_args = arg_append(lhs->nd_args, rhs, location); break; default: /* should not happen */ break; } return lhs; } static int value_expr_gen(struct parser_params *parser, NODE *node) { int cond = 0; if (!node) { rb_warning0("empty expression"); } while (node) { switch (nd_type(node)) { case NODE_RETURN: case NODE_BREAK: case NODE_NEXT: case NODE_REDO: case NODE_RETRY: if (!cond) yyerror0("void value expression"); /* or "control never reach"? */ return FALSE; case NODE_BLOCK: while (node->nd_next) { node = node->nd_next; } node = node->nd_head; break; case NODE_BEGIN: node = node->nd_body; break; case NODE_IF: case NODE_UNLESS: if (!node->nd_body) { node = node->nd_else; break; } else if (!node->nd_else) { node = node->nd_body; break; } if (!value_expr(node->nd_body)) return FALSE; node = node->nd_else; break; case NODE_AND: case NODE_OR: cond = 1; node = node->nd_2nd; break; case NODE_LASGN: case NODE_DASGN: case NODE_DASGN_CURR: case NODE_MASGN: mark_lvar_used(parser, node); return TRUE; default: return TRUE; } } return TRUE; } static void void_expr_gen(struct parser_params *parser, NODE *node) { const char *useless = 0; if (!RTEST(ruby_verbose)) return; if (!node || !(node = nd_once_body(node))) return; switch (nd_type(node)) { case NODE_OPCALL: switch (node->nd_mid) { case '+': case '-': case '*': case '/': case '%': case tPOW: case tUPLUS: case tUMINUS: case '|': case '^': case '&': case tCMP: case '>': case tGEQ: case '<': case tLEQ: case tEQ: case tNEQ: useless = rb_id2name(node->nd_mid); break; } break; case NODE_LVAR: case NODE_DVAR: case NODE_GVAR: case NODE_IVAR: case NODE_CVAR: case NODE_NTH_REF: case NODE_BACK_REF: useless = "a variable"; break; case NODE_CONST: useless = "a constant"; break; case NODE_LIT: case NODE_STR: case NODE_DSTR: case NODE_DREGX: useless = "a literal"; break; case NODE_COLON2: case NODE_COLON3: useless = "::"; break; case NODE_DOT2: useless = ".."; break; case NODE_DOT3: useless = "..."; break; case NODE_SELF: useless = "self"; break; case NODE_NIL: useless = "nil"; break; case NODE_TRUE: useless = "true"; break; case NODE_FALSE: useless = "false"; break; case NODE_DEFINED: useless = "defined?"; break; } if (useless) { rb_warn1L(nd_line(node), "possibly useless use of %s in void context", WARN_S(useless)); } } static void void_stmts_gen(struct parser_params *parser, NODE *node) { if (!RTEST(ruby_verbose)) return; if (!node) return; if (nd_type(node) != NODE_BLOCK) return; for (;;) { if (!node->nd_next) return; void_expr0(node->nd_head); node = node->nd_next; } } static NODE * remove_begin(NODE *node) { NODE **n = &node, *n1 = node; while (n1 && nd_type(n1) == NODE_BEGIN && n1->nd_body) { *n = n1 = n1->nd_body; } return node; } static NODE * remove_begin_all(NODE *node) { NODE **n = &node, *n1 = node; while (n1 && nd_type(n1) == NODE_BEGIN) { *n = n1 = n1->nd_body; } return node; } static void reduce_nodes_gen(struct parser_params *parser, NODE **body) { NODE *node = *body; if (!node) { *body = NEW_NIL(); return; } #define subnodes(n1, n2) \ ((!node->n1) ? (node->n2 ? (body = &node->n2, 1) : 0) : \ (!node->n2) ? (body = &node->n1, 1) : \ (reduce_nodes(&node->n1), body = &node->n2, 1)) while (node) { int newline = (int)(node->flags & NODE_FL_NEWLINE); switch (nd_type(node)) { end: case NODE_NIL: *body = 0; return; case NODE_RETURN: *body = node = node->nd_stts; if (newline && node) node->flags |= NODE_FL_NEWLINE; continue; case NODE_BEGIN: *body = node = node->nd_body; if (newline && node) node->flags |= NODE_FL_NEWLINE; continue; case NODE_BLOCK: body = &node->nd_end->nd_head; break; case NODE_IF: case NODE_UNLESS: if (subnodes(nd_body, nd_else)) break; return; case NODE_CASE: body = &node->nd_body; break; case NODE_WHEN: if (!subnodes(nd_body, nd_next)) goto end; break; case NODE_ENSURE: if (!subnodes(nd_head, nd_resq)) goto end; break; case NODE_RESCUE: if (node->nd_else) { body = &node->nd_resq; break; } if (!subnodes(nd_head, nd_resq)) goto end; break; default: return; } node = *body; if (newline && node) node->flags |= NODE_FL_NEWLINE; } #undef subnodes } static int is_static_content(NODE *node) { if (!node) return 1; switch (nd_type(node)) { case NODE_HASH: if (!(node = node->nd_head)) break; case NODE_ARRAY: do { if (!is_static_content(node->nd_head)) return 0; } while ((node = node->nd_next) != 0); case NODE_LIT: case NODE_STR: case NODE_NIL: case NODE_TRUE: case NODE_FALSE: case NODE_ZARRAY: break; default: return 0; } return 1; } static int assign_in_cond(struct parser_params *parser, NODE *node) { switch (nd_type(node)) { case NODE_MASGN: case NODE_LASGN: case NODE_DASGN: case NODE_DASGN_CURR: case NODE_GASGN: case NODE_IASGN: break; default: return 0; } if (!node->nd_value) return 1; if (is_static_content(node->nd_value)) { /* reports always */ parser_warn(node->nd_value, "found = in conditional, should be =="); } return 1; } static void warn_unless_e_option(struct parser_params *parser, NODE *node, const char *str) { if (!e_option_supplied(parser)) parser_warn(node, str); } static void warning_unless_e_option(struct parser_params *parser, NODE *node, const char *str) { if (!e_option_supplied(parser)) parser_warning(node, str); } static NODE *cond0(struct parser_params*,NODE*,int,YYLTYPE*); static NODE* range_op(struct parser_params *parser, NODE *node, YYLTYPE *location) { enum node_type type; if (node == 0) return 0; type = nd_type(node); value_expr(node); if (type == NODE_LIT && FIXNUM_P(node->nd_lit)) { warn_unless_e_option(parser, node, "integer literal in conditional range"); return new_call(node, tEQ, new_list(new_gvar(rb_intern("$."), location), location), location); } return cond0(parser, node, FALSE, location); } static int literal_node(NODE *node) { if (!node) return 1; /* same as NODE_NIL */ if (!(node = nd_once_body(node))) return 1; switch (nd_type(node)) { case NODE_LIT: case NODE_STR: case NODE_DSTR: case NODE_EVSTR: case NODE_DREGX: case NODE_DSYM: return 2; case NODE_TRUE: case NODE_FALSE: case NODE_NIL: return 1; } return 0; } static NODE* cond0(struct parser_params *parser, NODE *node, int method_op, YYLTYPE *location) { if (node == 0) return 0; if (!(node = nd_once_body(node))) return 0; assign_in_cond(parser, node); switch (nd_type(node)) { case NODE_DSTR: case NODE_EVSTR: case NODE_STR: if (!method_op) rb_warn0("string literal in condition"); break; case NODE_DREGX: { NODE *match; if (!method_op) warning_unless_e_option(parser, node, "regex literal in condition"); match = NEW_MATCH2(node, new_gvar(idLASTLINE, location)); nd_set_lineno(match, location->first_line); nd_set_column(match, location->first_column); return match; } case NODE_AND: case NODE_OR: node->nd_1st = cond0(parser, node->nd_1st, FALSE, location); node->nd_2nd = cond0(parser, node->nd_2nd, FALSE, location); break; case NODE_DOT2: case NODE_DOT3: node->nd_beg = range_op(parser, node->nd_beg, location); node->nd_end = range_op(parser, node->nd_end, location); if (nd_type(node) == NODE_DOT2) nd_set_type(node,NODE_FLIP2); else if (nd_type(node) == NODE_DOT3) nd_set_type(node, NODE_FLIP3); if (!method_op && !e_option_supplied(parser)) { int b = literal_node(node->nd_beg); int e = literal_node(node->nd_end); if ((b == 1 && e == 1) || (b + e >= 2 && RTEST(ruby_verbose))) { parser_warn(node, "range literal in condition"); } } break; case NODE_DSYM: if (!method_op) parser_warning(node, "literal in condition"); break; case NODE_LIT: if (RB_TYPE_P(node->nd_lit, T_REGEXP)) { if (!method_op) warn_unless_e_option(parser, node, "regex literal in condition"); nd_set_type(node, NODE_MATCH); } else { if (!method_op) parser_warning(node, "literal in condition"); } default: break; } return node; } static NODE* cond_gen(struct parser_params *parser, NODE *node, int method_op, YYLTYPE *location) { if (node == 0) return 0; return cond0(parser, node, method_op, location); } static NODE* new_if_gen(struct parser_params *parser, NODE *cc, NODE *left, NODE *right, YYLTYPE *location) { NODE *node_if; if (!cc) return right; cc = cond0(parser, cc, FALSE, location); node_if = NEW_IF(cc, left, right); nd_set_lineno(node_if, location->first_line); nd_set_column(node_if, location->first_column); return newline_node(node_if); } static NODE* new_unless_gen(struct parser_params *parser, NODE *cc, NODE *left, NODE *right, YYLTYPE *location) { NODE *node_unless; if (!cc) return right; cc = cond0(parser, cc, FALSE, location); node_unless = NEW_UNLESS(cc, left, right); nd_set_lineno(node_unless, location->first_line); nd_set_column(node_unless, location->first_column); return newline_node(node_unless); } static NODE* logop_gen(struct parser_params *parser, enum node_type type, NODE *left, NODE *right, YYLTYPE *location) { NODE *op; value_expr(left); if (left && (enum node_type)nd_type(left) == type) { NODE *node = left, *second; while ((second = node->nd_2nd) != 0 && (enum node_type)nd_type(second) == type) { node = second; } node->nd_2nd = NEW_NODE(type, second, right, 0); nd_set_lineno(node->nd_2nd, location->first_line); nd_set_column(node->nd_2nd, location->first_column); return left; } op = NEW_NODE(type, left, right, 0); nd_set_lineno(op, location->first_line); nd_set_column(op, location->first_column); return op; } static void no_blockarg(struct parser_params *parser, NODE *node) { if (node && nd_type(node) == NODE_BLOCK_PASS) { compile_error(PARSER_ARG "block argument should not be given"); } } static NODE * ret_args_gen(struct parser_params *parser, NODE *node) { if (node) { no_blockarg(parser, node); if (nd_type(node) == NODE_ARRAY) { if (node->nd_next == 0) { node = node->nd_head; } else { nd_set_type(node, NODE_VALUES); } } } return node; } static NODE * new_yield_gen(struct parser_params *parser, NODE *node, YYLTYPE *location) { NODE *yield; if (node) no_blockarg(parser, node); yield = NEW_YIELD(node); nd_set_lineno(yield, location->first_line); nd_set_column(yield, location->first_column); return yield; } static VALUE negate_lit_gen(struct parser_params *parser, VALUE lit) { int type = TYPE(lit); switch (type) { case T_FIXNUM: lit = LONG2FIX(-FIX2LONG(lit)); break; case T_BIGNUM: BIGNUM_NEGATE(lit); lit = rb_big_norm(lit); break; case T_RATIONAL: RRATIONAL_SET_NUM(lit, negate_lit(RRATIONAL(lit)->num)); break; case T_COMPLEX: RCOMPLEX_SET_REAL(lit, negate_lit(RCOMPLEX(lit)->real)); RCOMPLEX_SET_IMAG(lit, negate_lit(RCOMPLEX(lit)->imag)); break; case T_FLOAT: #if USE_FLONUM if (FLONUM_P(lit)) { lit = DBL2NUM(-RFLOAT_VALUE(lit)); break; } #endif RFLOAT(lit)->float_value = -RFLOAT_VALUE(lit); break; default: rb_parser_fatal(parser, "unknown literal type (%d) passed to negate_lit", type); break; } return lit; } static NODE * arg_blk_pass(NODE *node1, NODE *node2) { if (node2) { node2->nd_head = node1; return node2; } return node1; } static NODE* new_args_gen(struct parser_params *parser, NODE *m, NODE *o, ID r, NODE *p, NODE *tail) { int saved_line = ruby_sourceline; struct rb_args_info *args = tail->nd_ainfo; args->pre_args_num = m ? rb_long2int(m->nd_plen) : 0; args->pre_init = m ? m->nd_next : 0; args->post_args_num = p ? rb_long2int(p->nd_plen) : 0; args->post_init = p ? p->nd_next : 0; args->first_post_arg = p ? p->nd_pid : 0; args->rest_arg = r; args->opt_args = o; ruby_sourceline = saved_line; return tail; } static NODE* new_args_tail_gen(struct parser_params *parser, NODE *k, ID kr, ID b, YYLTYPE *location) { int saved_line = ruby_sourceline; struct rb_args_info *args; NODE *node; args = ZALLOC(struct rb_args_info); add_mark_object((VALUE)rb_imemo_alloc_new((VALUE)args, 0, 0, 0)); node = NEW_NODE(NODE_ARGS, 0, 0, args); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); if (parser->error_p) return node; args->block_arg = b; args->kw_args = k; if (k) { /* * def foo(k1: 1, kr1:, k2: 2, **krest, &b) * variable order: k1, kr1, k2, &b, internal_id, krest * #=> * variable order: kr1, k1, k2, internal_id, krest, &b */ ID kw_bits; NODE *kwn = k; struct vtable *required_kw_vars = vtable_alloc(NULL); struct vtable *kw_vars = vtable_alloc(NULL); int i; while (kwn) { NODE *val_node = kwn->nd_body->nd_value; ID vid = kwn->nd_body->nd_vid; if (val_node == NODE_SPECIAL_REQUIRED_KEYWORD) { vtable_add(required_kw_vars, vid); } else { vtable_add(kw_vars, vid); } kwn = kwn->nd_next; } kw_bits = internal_id(); if (kr && is_junk_id(kr)) vtable_pop(lvtbl->args, 1); vtable_pop(lvtbl->args, vtable_size(required_kw_vars) + vtable_size(kw_vars) + (b != 0)); for (i=0; itbl[i]); for (i=0; itbl[i]); vtable_free(required_kw_vars); vtable_free(kw_vars); arg_var(kw_bits); if (kr) arg_var(kr); if (b) arg_var(b); args->kw_rest_arg = new_dvar(kr, location); args->kw_rest_arg->nd_cflag = kw_bits; } else if (kr) { if (b) vtable_pop(lvtbl->args, 1); /* reorder */ arg_var(kr); if (b) arg_var(b); args->kw_rest_arg = new_dvar(kr, location); } ruby_sourceline = saved_line; return node; } static NODE* dsym_node_gen(struct parser_params *parser, NODE *node, YYLTYPE *location) { VALUE lit; if (!node) { return new_lit(ID2SYM(idNULL), location); } switch (nd_type(node)) { case NODE_DSTR: nd_set_type(node, NODE_DSYM); break; case NODE_STR: lit = node->nd_lit; add_mark_object(node->nd_lit = ID2SYM(rb_intern_str(lit))); nd_set_type(node, NODE_LIT); break; default: node = NEW_NODE(NODE_DSYM, Qnil, 1, new_list(node, location)); nd_set_lineno(node, location->first_line); nd_set_column(node, location->first_column); break; } return node; } static int append_literal_keys(st_data_t k, st_data_t v, st_data_t h) { NODE *node = (NODE *)v; NODE **result = (NODE **)h; node->nd_alen = 2; node->nd_next->nd_end = node->nd_next; node->nd_next->nd_next = 0; if (*result) list_concat(*result, node); else *result = node; return ST_CONTINUE; } static NODE * remove_duplicate_keys(struct parser_params *parser, NODE *hash, YYLTYPE *location) { st_table *literal_keys = st_init_numtable_with_size(hash->nd_alen / 2); NODE *result = 0; while (hash && hash->nd_head && hash->nd_next) { NODE *head = hash->nd_head; NODE *value = hash->nd_next; NODE *next = value->nd_next; VALUE key = (VALUE)head; st_data_t data; if (nd_type(head) == NODE_LIT && st_lookup(literal_keys, (key = head->nd_lit), &data)) { rb_compile_warn(ruby_sourcefile, nd_line((NODE *)data), "key %+"PRIsVALUE" is duplicated and overwritten on line %d", head->nd_lit, nd_line(head)); head = ((NODE *)data)->nd_next; head->nd_head = block_append(head->nd_head, value->nd_head, location); } else { st_insert(literal_keys, (st_data_t)key, (st_data_t)hash); } hash = next; } st_foreach(literal_keys, append_literal_keys, (st_data_t)&result); st_free_table(literal_keys); if (hash) { if (!result) result = hash; else list_concat(result, hash); } return result; } static NODE * new_hash_gen(struct parser_params *parser, NODE *hash, YYLTYPE *location) { NODE *nd_hash; if (hash) hash = remove_duplicate_keys(parser, hash, location); nd_hash = NEW_HASH(hash); nd_set_lineno(nd_hash, location->first_line); nd_set_column(nd_hash, location->first_column); return nd_hash; } #endif /* !RIPPER */ #ifndef RIPPER static NODE * new_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs, YYLTYPE *location) { NODE *asgn; if (lhs) { ID vid = lhs->nd_vid; if (op == tOROP) { lhs->nd_value = rhs; asgn = NEW_OP_ASGN_OR(gettable(vid, location), lhs); nd_set_lineno(asgn, location->first_line); nd_set_column(asgn, location->first_column); if (is_notop_id(vid)) { switch (id_type(vid)) { case ID_GLOBAL: case ID_INSTANCE: case ID_CLASS: asgn->nd_aid = vid; } } } else if (op == tANDOP) { lhs->nd_value = rhs; asgn = NEW_OP_ASGN_AND(gettable(vid, location), lhs); nd_set_lineno(asgn, location->first_line); nd_set_column(asgn, location->first_column); } else { asgn = lhs; asgn->nd_value = new_call(gettable(vid, location), op, new_list(rhs, location), location); } } else { asgn = new_begin(0, location); } return asgn; } static NODE * new_attr_op_assign_gen(struct parser_params *parser, NODE *lhs, ID atype, ID attr, ID op, NODE *rhs, YYLTYPE *location) { NODE *asgn; if (op == tOROP) { op = 0; } else if (op == tANDOP) { op = 1; } asgn = NEW_OP_ASGN2(lhs, CALL_Q_P(atype), attr, op, rhs); nd_set_lineno(asgn, location->first_line); nd_set_column(asgn, location->first_column); fixpos(asgn, lhs); return asgn; } static NODE * new_const_op_assign_gen(struct parser_params *parser, NODE *lhs, ID op, NODE *rhs, YYLTYPE *location) { NODE *asgn; if (op == tOROP) { op = 0; } else if (op == tANDOP) { op = 1; } if (lhs) { asgn = NEW_OP_CDECL(lhs, op, rhs); } else { asgn = new_begin(0, location); } fixpos(asgn, lhs); nd_set_lineno(asgn, location->first_line); nd_set_column(asgn, location->first_column); return asgn; } static NODE * const_path_field_gen(struct parser_params *parser, NODE *head, ID mid, YYLTYPE *location) { NODE *colon2 = NEW_COLON2(head, mid); nd_set_lineno(colon2, location->first_line); nd_set_column(colon2, location->first_column); return colon2; } static NODE * const_decl_gen(struct parser_params *parser, NODE *path, YYLTYPE *location) { if (in_def || in_single) { yyerror0("dynamic constant assignment"); } return new_cdecl(0, 0, (path), location); } #else static VALUE new_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE op, VALUE rhs) { return dispatch3(opassign, lhs, op, rhs); } static VALUE new_attr_op_assign_gen(struct parser_params *parser, VALUE lhs, VALUE type, VALUE attr, VALUE op, VALUE rhs) { VALUE recv = dispatch3(field, lhs, type, attr); return dispatch3(opassign, recv, op, rhs); } static VALUE new_qcall_gen(struct parser_params *parser, VALUE r, VALUE q, VALUE m, VALUE a) { VALUE ret = dispatch3(call, (r), (q), (m)); return method_optarg(ret, (a)); } static VALUE const_decl_gen(struct parser_params *parser, VALUE path) { if (in_def || in_single) { path = dispatch1(assign_error, path); ripper_error(); } return path; } static VALUE assign_error_gen(struct parser_params *parser, VALUE a) { a = dispatch1(assign_error, a); ripper_error(); return a; } static VALUE var_field_gen(struct parser_params *parser, VALUE a) { return ripper_new_yylval(get_id(a), dispatch1(var_field, a), 0); } #endif static void warn_unused_var(struct parser_params *parser, struct local_vars *local) { int i, cnt; ID *v, *u; if (!local->used) return; v = local->vars->tbl; u = local->used->tbl; cnt = local->used->pos; if (cnt != local->vars->pos) { rb_parser_fatal(parser, "local->used->pos != local->vars->pos"); } for (i = 0; i < cnt; ++i) { if (!v[i] || (u[i] & LVAR_USED)) continue; if (is_private_local_id(v[i])) continue; rb_warn1L((int)u[i], "assigned but unused variable - %"PRIsWARN, rb_id2str(v[i])); } } static void local_push_gen(struct parser_params *parser, int inherit_dvars) { struct local_vars *local; local = ALLOC(struct local_vars); local->prev = lvtbl; local->args = vtable_alloc(0); local->vars = vtable_alloc(inherit_dvars ? DVARS_INHERIT : DVARS_TOPSCOPE); local->used = !(inherit_dvars && (ifndef_ripper(compile_for_eval || e_option_supplied(parser))+0)) && RTEST(ruby_verbose) ? vtable_alloc(0) : 0; # if WARN_PAST_SCOPE local->past = 0; # endif local->cmdargs = cmdarg_stack; CMDARG_SET(0); lvtbl = local; } static void local_pop_gen(struct parser_params *parser) { struct local_vars *local = lvtbl->prev; if (lvtbl->used) { warn_unused_var(parser, lvtbl); vtable_free(lvtbl->used); } # if WARN_PAST_SCOPE while (lvtbl->past) { struct vtable *past = lvtbl->past; lvtbl->past = past->prev; vtable_free(past); } # endif vtable_free(lvtbl->args); vtable_free(lvtbl->vars); CMDARG_SET(lvtbl->cmdargs); xfree(lvtbl); lvtbl = local; } #ifndef RIPPER static ID* local_tbl_gen(struct parser_params *parser) { int cnt_args = vtable_size(lvtbl->args); int cnt_vars = vtable_size(lvtbl->vars); int cnt = cnt_args + cnt_vars; int i, j; ID *buf; if (cnt <= 0) return 0; buf = ALLOC_N(ID, cnt + 1); MEMCPY(buf+1, lvtbl->args->tbl, ID, cnt_args); /* remove IDs duplicated to warn shadowing */ for (i = 0, j = cnt_args+1; i < cnt_vars; ++i) { ID id = lvtbl->vars->tbl[i]; if (!vtable_included(lvtbl->args, id)) { buf[j++] = id; } } if (--j < cnt) REALLOC_N(buf, ID, (cnt = j) + 1); buf[0] = cnt; add_mark_object((VALUE)rb_imemo_alloc_new((VALUE)buf, 0, 0, 0)); return buf; } #endif static void arg_var_gen(struct parser_params *parser, ID id) { vtable_add(lvtbl->args, id); } static void local_var_gen(struct parser_params *parser, ID id) { vtable_add(lvtbl->vars, id); if (lvtbl->used) { vtable_add(lvtbl->used, (ID)ruby_sourceline); } } static int local_id_gen(struct parser_params *parser, ID id, ID **vidrefp) { struct vtable *vars, *args, *used; vars = lvtbl->vars; args = lvtbl->args; used = lvtbl->used; while (vars && POINTER_P(vars->prev)) { vars = vars->prev; args = args->prev; if (used) used = used->prev; } if (vars && vars->prev == DVARS_INHERIT) { return rb_local_defined(id, parser->base_block); } else if (vtable_included(args, id)) { return 1; } else { int i = vtable_included(vars, id); if (i && used && vidrefp) *vidrefp = &used->tbl[i-1]; return i != 0; } } static const struct vtable * dyna_push_gen(struct parser_params *parser) { lvtbl->args = vtable_alloc(lvtbl->args); lvtbl->vars = vtable_alloc(lvtbl->vars); if (lvtbl->used) { lvtbl->used = vtable_alloc(lvtbl->used); } return lvtbl->args; } static void dyna_pop_vtable(struct parser_params *parser, struct vtable **vtblp) { struct vtable *tmp = *vtblp; *vtblp = tmp->prev; # if WARN_PAST_SCOPE if (parser->past_scope_enabled) { tmp->prev = lvtbl->past; lvtbl->past = tmp; return; } # endif vtable_free(tmp); } static void dyna_pop_1(struct parser_params *parser) { struct vtable *tmp; if ((tmp = lvtbl->used) != 0) { warn_unused_var(parser, lvtbl); lvtbl->used = lvtbl->used->prev; vtable_free(tmp); } dyna_pop_vtable(parser, &lvtbl->args); dyna_pop_vtable(parser, &lvtbl->vars); } static void dyna_pop_gen(struct parser_params *parser, const struct vtable *lvargs) { while (lvtbl->args != lvargs) { dyna_pop_1(parser); if (!lvtbl->args) { struct local_vars *local = lvtbl->prev; xfree(lvtbl); lvtbl = local; } } dyna_pop_1(parser); } static int dyna_in_block_gen(struct parser_params *parser) { return POINTER_P(lvtbl->vars) && lvtbl->vars->prev != DVARS_TOPSCOPE; } static int dvar_defined_gen(struct parser_params *parser, ID id, ID **vidrefp) { struct vtable *vars, *args, *used; int i; args = lvtbl->args; vars = lvtbl->vars; used = lvtbl->used; while (POINTER_P(vars)) { if (vtable_included(args, id)) { return 1; } if ((i = vtable_included(vars, id)) != 0) { if (used && vidrefp) *vidrefp = &used->tbl[i-1]; return 1; } args = args->prev; vars = vars->prev; if (!vidrefp) used = 0; if (used) used = used->prev; } if (vars == DVARS_INHERIT) { return rb_dvar_defined(id, parser->base_block); } return 0; } static int dvar_curr_gen(struct parser_params *parser, ID id) { return (vtable_included(lvtbl->args, id) || vtable_included(lvtbl->vars, id)); } static void reg_fragment_enc_error(struct parser_params* parser, VALUE str, int c) { compile_error(PARSER_ARG "regexp encoding option '%c' differs from source encoding '%s'", c, rb_enc_name(rb_enc_get(str))); } #ifndef RIPPER int rb_reg_fragment_setenc(struct parser_params* parser, VALUE str, int options) { int c = RE_OPTION_ENCODING_IDX(options); if (c) { int opt, idx; rb_char_to_option_kcode(c, &opt, &idx); if (idx != ENCODING_GET(str) && rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) { goto error; } ENCODING_SET(str, idx); } else if (RE_OPTION_ENCODING_NONE(options)) { if (!ENCODING_IS_ASCII8BIT(str) && rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) { c = 'n'; goto error; } rb_enc_associate(str, rb_ascii8bit_encoding()); } else if (current_enc == rb_usascii_encoding()) { if (rb_enc_str_coderange(str) != ENC_CODERANGE_7BIT) { /* raise in re.c */ rb_enc_associate(str, rb_usascii_encoding()); } else { rb_enc_associate(str, rb_ascii8bit_encoding()); } } return 0; error: return c; } static void reg_fragment_setenc_gen(struct parser_params* parser, VALUE str, int options) { int c = rb_reg_fragment_setenc(parser, str, options); if (c) reg_fragment_enc_error(parser, str, c); } static int reg_fragment_check_gen(struct parser_params* parser, VALUE str, int options) { VALUE err; reg_fragment_setenc(str, options); err = rb_reg_check_preprocess(str); if (err != Qnil) { err = rb_obj_as_string(err); compile_error(PARSER_ARG "%"PRIsVALUE, err); return 0; } return 1; } typedef struct { struct parser_params* parser; rb_encoding *enc; NODE *succ_block; YYLTYPE *location; } reg_named_capture_assign_t; static int reg_named_capture_assign_iter(const OnigUChar *name, const OnigUChar *name_end, int back_num, int *back_refs, OnigRegex regex, void *arg0) { reg_named_capture_assign_t *arg = (reg_named_capture_assign_t*)arg0; struct parser_params* parser = arg->parser; rb_encoding *enc = arg->enc; long len = name_end - name; const char *s = (const char *)name; ID var; NODE *node, *succ; if (!len || (*name != '_' && ISASCII(*name) && !rb_enc_islower(*name, enc)) || (len < MAX_WORD_LENGTH && rb_reserved_word(s, (int)len)) || !rb_enc_symname2_p(s, len, enc)) { return ST_CONTINUE; } var = intern_cstr(s, len, enc); node = node_assign(assignable(var, 0, arg->location), new_lit(ID2SYM(var), arg->location), arg->location); succ = arg->succ_block; if (!succ) succ = new_begin(0, arg->location); succ = block_append(succ, node, arg->location); arg->succ_block = succ; return ST_CONTINUE; } static NODE * reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp, YYLTYPE *location) { reg_named_capture_assign_t arg; arg.parser = parser; arg.enc = rb_enc_get(regexp); arg.succ_block = 0; arg.location = location; onig_foreach_name(RREGEXP_PTR(regexp), reg_named_capture_assign_iter, &arg); if (!arg.succ_block) return 0; return arg.succ_block->nd_next; } static VALUE parser_reg_compile(struct parser_params* parser, VALUE str, int options) { reg_fragment_setenc(str, options); return rb_parser_reg_compile(parser, str, options); } VALUE rb_parser_reg_compile(struct parser_params* parser, VALUE str, int options) { return rb_reg_compile(str, options & RE_OPTION_MASK, ruby_sourcefile, ruby_sourceline); } static VALUE reg_compile_gen(struct parser_params* parser, VALUE str, int options) { VALUE re; VALUE err; err = rb_errinfo(); re = parser_reg_compile(parser, str, options); if (NIL_P(re)) { VALUE m = rb_attr_get(rb_errinfo(), idMesg); rb_set_errinfo(err); compile_error(PARSER_ARG "%"PRIsVALUE, m); return Qnil; } return re; } #else static VALUE parser_reg_compile(struct parser_params* parser, VALUE str, int options, VALUE *errmsg) { VALUE err = rb_errinfo(); VALUE re; int c = rb_reg_fragment_setenc(parser, str, options); if (c) reg_fragment_enc_error(parser, str, c); re = rb_parser_reg_compile(parser, str, options); if (NIL_P(re)) { *errmsg = rb_attr_get(rb_errinfo(), idMesg); rb_set_errinfo(err); } return re; } #endif #ifndef RIPPER void rb_parser_set_options(VALUE vparser, int print, int loop, int chomp, int split) { struct parser_params *parser; TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); parser->do_print = print; parser->do_loop = loop; parser->do_chomp = chomp; parser->do_split = split; } static NODE * parser_append_options(struct parser_params *parser, NODE *node) { struct YYLTYPE default_location = {1, 0, 1, 0}; if (parser->do_print) { node = block_append(node, new_fcall(rb_intern("print"), NEW_ARRAY(new_gvar(idLASTLINE, &default_location)), &default_location), &default_location); } if (parser->do_loop) { if (parser->do_split) { node = block_append(NEW_GASGN(rb_intern("$F"), new_call(new_gvar(idLASTLINE, &default_location), rb_intern("split"), 0, &default_location)), node, &default_location); } if (parser->do_chomp) { node = block_append(new_call(new_gvar(idLASTLINE, &default_location), rb_intern("chomp!"), 0, &default_location), node, &default_location); } node = NEW_WHILE(NEW_VCALL(idGets), node, 1); } return node; } void rb_init_parse(void) { /* just to suppress unused-function warnings */ (void)nodetype; (void)nodeline; } #endif /* !RIPPER */ static ID internal_id_gen(struct parser_params *parser) { ID id = (ID)vtable_size(lvtbl->args) + (ID)vtable_size(lvtbl->vars); id += ((tLAST_TOKEN - ID_INTERNAL) >> ID_SCOPE_SHIFT) + 1; return ID_STATIC_SYM | ID_INTERNAL | (id << ID_SCOPE_SHIFT); } static void parser_initialize(struct parser_params *parser) { /* note: we rely on TypedData_Make_Struct to set most fields to 0 */ command_start = TRUE; ruby_sourcefile_string = Qnil; #ifdef RIPPER parser->delayed = Qnil; parser->result = Qnil; parser->parsing_thread = Qnil; #else parser->error_buffer = Qfalse; #endif parser->debug_buffer = Qnil; parser->debug_output = rb_stdout; parser->enc = rb_utf8_encoding(); } #ifdef RIPPER #define parser_mark ripper_parser_mark #define parser_free ripper_parser_free #endif static void parser_mark(void *ptr) { struct parser_params *parser = (struct parser_params*)ptr; rb_gc_mark(lex_input); rb_gc_mark(lex_lastline); rb_gc_mark(lex_nextline); rb_gc_mark(ruby_sourcefile_string); rb_gc_mark((VALUE)lex_strterm); rb_gc_mark((VALUE)parser->ast); #ifndef RIPPER rb_gc_mark(ruby_debug_lines); rb_gc_mark(parser->compile_option); rb_gc_mark(parser->error_buffer); #else rb_gc_mark(parser->delayed); rb_gc_mark(parser->value); rb_gc_mark(parser->result); rb_gc_mark(parser->parsing_thread); #endif rb_gc_mark(parser->debug_buffer); rb_gc_mark(parser->debug_output); #ifdef YYMALLOC rb_gc_mark((VALUE)parser->heap); #endif } static void parser_free(void *ptr) { struct parser_params *parser = (struct parser_params*)ptr; struct local_vars *local, *prev; if (tokenbuf) { xfree(tokenbuf); } for (local = lvtbl; local; local = prev) { if (local->vars) xfree(local->vars); prev = local->prev; xfree(local); } { token_info *ptinfo; while ((ptinfo = parser->token_info) != 0) { parser->token_info = ptinfo->next; xfree(ptinfo); } } xfree(ptr); } static size_t parser_memsize(const void *ptr) { struct parser_params *parser = (struct parser_params*)ptr; struct local_vars *local; size_t size = sizeof(*parser); size += toksiz; for (local = lvtbl; local; local = local->prev) { size += sizeof(*local); if (local->vars) size += local->vars->capa * sizeof(ID); } return size; } static const rb_data_type_t parser_data_type = { #ifndef RIPPER "parser", #else "ripper", #endif { parser_mark, parser_free, parser_memsize, }, 0, 0, RUBY_TYPED_FREE_IMMEDIATELY }; #ifndef RIPPER #undef rb_reserved_word const struct kwtable * rb_reserved_word(const char *str, unsigned int len) { return reserved_word(str, len); } VALUE rb_parser_new(void) { struct parser_params *p; VALUE parser = TypedData_Make_Struct(0, struct parser_params, &parser_data_type, p); parser_initialize(p); return parser; } VALUE rb_parser_set_context(VALUE vparser, const struct rb_block *base, int main) { struct parser_params *parser; TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); parser->error_buffer = main ? Qfalse : Qnil; parser->base_block = base; in_main = main; return vparser; } #endif #ifdef RIPPER #define rb_parser_end_seen_p ripper_parser_end_seen_p #define rb_parser_encoding ripper_parser_encoding #define rb_parser_get_yydebug ripper_parser_get_yydebug #define rb_parser_set_yydebug ripper_parser_set_yydebug static VALUE ripper_parser_end_seen_p(VALUE vparser); static VALUE ripper_parser_encoding(VALUE vparser); static VALUE ripper_parser_get_yydebug(VALUE self); static VALUE ripper_parser_set_yydebug(VALUE self, VALUE flag); /* * call-seq: * ripper.error? -> Boolean * * Return true if parsed source has errors. */ static VALUE ripper_error_p(VALUE vparser) { struct parser_params *parser; TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); return parser->error_p ? Qtrue : Qfalse; } #endif /* * call-seq: * ripper.end_seen? -> Boolean * * Return true if parsed source ended by +\_\_END\_\_+. */ VALUE rb_parser_end_seen_p(VALUE vparser) { struct parser_params *parser; TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); return ruby__end__seen ? Qtrue : Qfalse; } /* * call-seq: * ripper.encoding -> encoding * * Return encoding of the source. */ VALUE rb_parser_encoding(VALUE vparser) { struct parser_params *parser; TypedData_Get_Struct(vparser, struct parser_params, &parser_data_type, parser); return rb_enc_from_encoding(current_enc); } /* * call-seq: * ripper.yydebug -> true or false * * Get yydebug. */ VALUE rb_parser_get_yydebug(VALUE self) { struct parser_params *parser; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); return yydebug ? Qtrue : Qfalse; } /* * call-seq: * ripper.yydebug = flag * * Set yydebug. */ VALUE rb_parser_set_yydebug(VALUE self, VALUE flag) { struct parser_params *parser; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); yydebug = RTEST(flag); return flag; } #ifndef RIPPER #ifdef YYMALLOC #define HEAPCNT(n, size) ((n) * (size) / sizeof(YYSTYPE)) #define NEWHEAP() rb_imemo_alloc_new(0, (VALUE)parser->heap, 0, 0) #define ADD2HEAP(n, c, p) ((parser->heap = (n))->ptr = (p), \ (n)->cnt = (c), (p)) void * rb_parser_malloc(struct parser_params *parser, size_t size) { size_t cnt = HEAPCNT(1, size); rb_imemo_alloc_t *n = NEWHEAP(); void *ptr = xmalloc(size); return ADD2HEAP(n, cnt, ptr); } void * rb_parser_calloc(struct parser_params *parser, size_t nelem, size_t size) { size_t cnt = HEAPCNT(nelem, size); rb_imemo_alloc_t *n = NEWHEAP(); void *ptr = xcalloc(nelem, size); return ADD2HEAP(n, cnt, ptr); } void * rb_parser_realloc(struct parser_params *parser, void *ptr, size_t size) { rb_imemo_alloc_t *n; size_t cnt = HEAPCNT(1, size); if (ptr && (n = parser->heap) != NULL) { do { if (n->ptr == ptr) { n->ptr = ptr = xrealloc(ptr, size); if (n->cnt) n->cnt = cnt; return ptr; } } while ((n = n->next) != NULL); } n = NEWHEAP(); ptr = xrealloc(ptr, size); return ADD2HEAP(n, cnt, ptr); } void rb_parser_free(struct parser_params *parser, void *ptr) { rb_imemo_alloc_t **prev = &parser->heap, *n; while ((n = *prev) != NULL) { if (n->ptr == ptr) { *prev = n->next; rb_gc_force_recycle((VALUE)n); break; } prev = &n->next; } xfree(ptr); } #endif void rb_parser_printf(struct parser_params *parser, const char *fmt, ...) { va_list ap; VALUE mesg = parser->debug_buffer; if (NIL_P(mesg)) parser->debug_buffer = mesg = rb_str_new(0, 0); va_start(ap, fmt); rb_str_vcatf(mesg, fmt, ap); va_end(ap); if (RSTRING_END(mesg)[-1] == '\n') { rb_io_write(parser->debug_output, mesg); parser->debug_buffer = Qnil; } } static void parser_compile_error(struct parser_params *parser, const char *fmt, ...) { va_list ap; rb_io_flush(parser->debug_output); parser->error_p = 1; va_start(ap, fmt); parser->error_buffer = rb_syntax_error_append(parser->error_buffer, ruby_sourcefile_string, ruby_sourceline, rb_long2int(lex_p - lex_pbeg), current_enc, fmt, ap); va_end(ap); } #endif #ifdef RIPPER #ifdef RIPPER_DEBUG extern int rb_is_pointer_to_heap(VALUE); /* :nodoc: */ static VALUE ripper_validate_object(VALUE self, VALUE x) { if (x == Qfalse) return x; if (x == Qtrue) return x; if (x == Qnil) return x; if (x == Qundef) rb_raise(rb_eArgError, "Qundef given"); if (FIXNUM_P(x)) return x; if (SYMBOL_P(x)) return x; if (!rb_is_pointer_to_heap(x)) rb_raise(rb_eArgError, "invalid pointer: %p", x); switch (BUILTIN_TYPE(x)) { case T_STRING: case T_OBJECT: case T_ARRAY: case T_BIGNUM: case T_FLOAT: case T_COMPLEX: case T_RATIONAL: return x; case T_NODE: if (nd_type(x) != NODE_RIPPER) { rb_raise(rb_eArgError, "NODE given: %p", x); } return ((NODE *)x)->nd_rval; default: rb_raise(rb_eArgError, "wrong type of ruby object: %p (%s)", x, rb_obj_classname(x)); } return x; } #endif #define validate(x) ((x) = get_value(x)) static VALUE ripper_dispatch0(struct parser_params *parser, ID mid) { return rb_funcall(parser->value, mid, 0); } static VALUE ripper_dispatch1(struct parser_params *parser, ID mid, VALUE a) { validate(a); return rb_funcall(parser->value, mid, 1, a); } static VALUE ripper_dispatch2(struct parser_params *parser, ID mid, VALUE a, VALUE b) { validate(a); validate(b); return rb_funcall(parser->value, mid, 2, a, b); } static VALUE ripper_dispatch3(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c) { validate(a); validate(b); validate(c); return rb_funcall(parser->value, mid, 3, a, b, c); } static VALUE ripper_dispatch4(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d) { validate(a); validate(b); validate(c); validate(d); return rb_funcall(parser->value, mid, 4, a, b, c, d); } static VALUE ripper_dispatch5(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d, VALUE e) { validate(a); validate(b); validate(c); validate(d); validate(e); return rb_funcall(parser->value, mid, 5, a, b, c, d, e); } static VALUE ripper_dispatch7(struct parser_params *parser, ID mid, VALUE a, VALUE b, VALUE c, VALUE d, VALUE e, VALUE f, VALUE g) { validate(a); validate(b); validate(c); validate(d); validate(e); validate(f); validate(g); return rb_funcall(parser->value, mid, 7, a, b, c, d, e, f, g); } static ID ripper_get_id(VALUE v) { NODE *nd; if (!RB_TYPE_P(v, T_NODE)) return 0; nd = (NODE *)v; if (nd_type(nd) != NODE_RIPPER) return 0; return nd->nd_vid; } static VALUE ripper_get_value(VALUE v) { NODE *nd; if (v == Qundef) return Qnil; if (!RB_TYPE_P(v, T_NODE)) return v; nd = (NODE *)v; if (nd_type(nd) != NODE_RIPPER) return Qnil; return nd->nd_rval; } static void ripper_error_gen(struct parser_params *parser) { parser->error_p = TRUE; } static void ripper_compile_error(struct parser_params *parser, const char *fmt, ...) { VALUE str; va_list args; va_start(args, fmt); str = rb_vsprintf(fmt, args); va_end(args); rb_funcall(parser->value, rb_intern("compile_error"), 1, str); ripper_error_gen(parser); } static VALUE ripper_lex_get_generic(struct parser_params *parser, VALUE src) { VALUE line = rb_funcallv_public(src, id_gets, 0, 0); if (!NIL_P(line) && !RB_TYPE_P(line, T_STRING)) { rb_raise(rb_eTypeError, "gets returned %"PRIsVALUE" (expected String or nil)", rb_obj_class(line)); } return line; } static VALUE ripper_lex_io_get(struct parser_params *parser, VALUE src) { return rb_io_gets(src); } static VALUE ripper_s_allocate(VALUE klass) { struct parser_params *p; VALUE self = TypedData_Make_Struct(klass, struct parser_params, &parser_data_type, p); p->value = self; return self; } #define ripper_initialized_p(r) ((r)->lex.input != 0) /* * call-seq: * Ripper.new(src, filename="(ripper)", lineno=1) -> ripper * * Create a new Ripper object. * _src_ must be a String, an IO, or an Object which has #gets method. * * This method does not starts parsing. * See also Ripper#parse and Ripper.parse. */ static VALUE ripper_initialize(int argc, VALUE *argv, VALUE self) { struct parser_params *parser; VALUE src, fname, lineno; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); rb_scan_args(argc, argv, "12", &src, &fname, &lineno); if (RB_TYPE_P(src, T_FILE)) { lex_gets = ripper_lex_io_get; } else if (rb_respond_to(src, id_gets)) { lex_gets = ripper_lex_get_generic; } else { StringValue(src); lex_gets = lex_get_str; } lex_input = src; parser->eofp = 0; if (NIL_P(fname)) { fname = STR_NEW2("(ripper)"); OBJ_FREEZE(fname); } else { StringValueCStr(fname); fname = rb_str_new_frozen(fname); } parser_initialize(parser); ruby_sourcefile_string = fname; ruby_sourcefile = RSTRING_PTR(fname); ruby_sourceline = NIL_P(lineno) ? 0 : NUM2INT(lineno) - 1; return Qnil; } struct ripper_args { struct parser_params *parser; int argc; VALUE *argv; }; static VALUE ripper_parse0(VALUE parser_v) { struct parser_params *parser; TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, parser); parser_prepare(parser); parser->ast = rb_ast_new(); ripper_yyparse((void*)parser); rb_ast_free(parser->ast); parser->ast = 0; return parser->result; } static VALUE ripper_ensure(VALUE parser_v) { struct parser_params *parser; TypedData_Get_Struct(parser_v, struct parser_params, &parser_data_type, parser); parser->parsing_thread = Qnil; return Qnil; } /* * call-seq: * ripper.parse * * Start parsing and returns the value of the root action. */ static VALUE ripper_parse(VALUE self) { struct parser_params *parser; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); if (!ripper_initialized_p(parser)) { rb_raise(rb_eArgError, "method called for uninitialized object"); } if (!NIL_P(parser->parsing_thread)) { if (parser->parsing_thread == rb_thread_current()) rb_raise(rb_eArgError, "Ripper#parse is not reentrant"); else rb_raise(rb_eArgError, "Ripper#parse is not multithread-safe"); } parser->parsing_thread = rb_thread_current(); rb_ensure(ripper_parse0, self, ripper_ensure, self); return parser->result; } /* * call-seq: * ripper.column -> Integer * * Return column number of current parsing line. * This number starts from 0. */ static VALUE ripper_column(VALUE self) { struct parser_params *parser; long col; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); if (!ripper_initialized_p(parser)) { rb_raise(rb_eArgError, "method called for uninitialized object"); } if (NIL_P(parser->parsing_thread)) return Qnil; col = parser->tokp - lex_pbeg; return LONG2NUM(col); } /* * call-seq: * ripper.filename -> String * * Return current parsing filename. */ static VALUE ripper_filename(VALUE self) { struct parser_params *parser; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); if (!ripper_initialized_p(parser)) { rb_raise(rb_eArgError, "method called for uninitialized object"); } return ruby_sourcefile_string; } /* * call-seq: * ripper.lineno -> Integer * * Return line number of current parsing line. * This number starts from 1. */ static VALUE ripper_lineno(VALUE self) { struct parser_params *parser; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); if (!ripper_initialized_p(parser)) { rb_raise(rb_eArgError, "method called for uninitialized object"); } if (NIL_P(parser->parsing_thread)) return Qnil; return INT2NUM(ruby_sourceline); } /* * call-seq: * ripper.state -> Integer * * Return scanner state of current token. */ static VALUE ripper_state(VALUE self) { struct parser_params *parser; TypedData_Get_Struct(self, struct parser_params, &parser_data_type, parser); if (!ripper_initialized_p(parser)) { rb_raise(rb_eArgError, "method called for uninitialized object"); } if (NIL_P(parser->parsing_thread)) return Qnil; return INT2NUM(lex_state); } #ifdef RIPPER_DEBUG /* :nodoc: */ static VALUE ripper_assert_Qundef(VALUE self, VALUE obj, VALUE msg) { StringValue(msg); if (obj == Qundef) { rb_raise(rb_eArgError, "%"PRIsVALUE, msg); } return Qnil; } /* :nodoc: */ static VALUE ripper_value(VALUE self, VALUE obj) { return ULONG2NUM(obj); } #endif static VALUE ripper_lex_state_name(VALUE self, VALUE state) { return rb_parser_lex_state_name(NUM2INT(state)); } void Init_ripper(void) { ripper_init_eventids1(); ripper_init_eventids2(); id_warn = rb_intern_const("warn"); id_warning = rb_intern_const("warning"); id_gets = rb_intern_const("gets"); InitVM(ripper); } void InitVM_ripper(void) { VALUE Ripper; Ripper = rb_define_class("Ripper", rb_cObject); /* version of Ripper */ rb_define_const(Ripper, "Version", rb_usascii_str_new2(RIPPER_VERSION)); rb_define_alloc_func(Ripper, ripper_s_allocate); rb_define_method(Ripper, "initialize", ripper_initialize, -1); rb_define_method(Ripper, "parse", ripper_parse, 0); rb_define_method(Ripper, "column", ripper_column, 0); rb_define_method(Ripper, "filename", ripper_filename, 0); rb_define_method(Ripper, "lineno", ripper_lineno, 0); rb_define_method(Ripper, "state", ripper_state, 0); rb_define_method(Ripper, "end_seen?", rb_parser_end_seen_p, 0); rb_define_method(Ripper, "encoding", rb_parser_encoding, 0); rb_define_method(Ripper, "yydebug", rb_parser_get_yydebug, 0); rb_define_method(Ripper, "yydebug=", rb_parser_set_yydebug, 1); rb_define_method(Ripper, "error?", ripper_error_p, 0); #ifdef RIPPER_DEBUG rb_define_method(rb_mKernel, "assert_Qundef", ripper_assert_Qundef, 2); rb_define_method(rb_mKernel, "rawVALUE", ripper_value, 1); rb_define_method(rb_mKernel, "validate_object", ripper_validate_object, 1); #endif rb_define_singleton_method(Ripper, "dedent_string", parser_dedent_string, 2); rb_define_private_method(Ripper, "dedent_string", parser_dedent_string, 2); rb_define_singleton_method(Ripper, "lex_state_name", ripper_lex_state_name, 1); <% @exprs.each do |expr, desc| -%> /* <%=desc%> */ rb_define_const(Ripper, "<%=expr%>", INT2NUM(<%=expr%>)); <% end %> ripper_init_eventids1_table(Ripper); ripper_init_eventids2_table(Ripper); # if 0 /* Hack to let RDoc document SCRIPT_LINES__ */ /* * When a Hash is assigned to +SCRIPT_LINES__+ the contents of files loaded * after the assignment will be added as an Array of lines with the file * name as the key. */ rb_define_global_const("SCRIPT_LINES__", Qnil); #endif } #endif /* RIPPER */