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authoryugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-08-25 15:02:05 +0000
committeryugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2008-08-25 15:02:05 +0000
commit0dc342de848a642ecce8db697b8fecd83a63e117 (patch)
tree2b7ed4724aff1f86073e4740134bda9c4aac1a39 /trunk/parse.y
parentef70cf7138ab8034b5b806f466e4b484b24f0f88 (diff)
added tag v1_9_0_4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'trunk/parse.y')
-rw-r--r--trunk/parse.y10013
1 files changed, 10013 insertions, 0 deletions
diff --git a/trunk/parse.y b/trunk/parse.y
new file mode 100644
index 0000000000..10e0c2c128
--- /dev/null
+++ b/trunk/parse.y
@@ -0,0 +1,10013 @@
+/**********************************************************************
+
+ parse.y -
+
+ $Author$
+ created at: Fri May 28 18:02:42 JST 1993
+
+ Copyright (C) 1993-2007 Yukihiro Matsumoto
+
+**********************************************************************/
+
+%{
+
+#define YYDEBUG 1
+#define YYERROR_VERBOSE 1
+#define YYSTACK_USE_ALLOCA 0
+
+#include "ruby/ruby.h"
+#include "ruby/intern.h"
+#include "ruby/node.h"
+#include "ruby/st.h"
+#include "ruby/encoding.h"
+#include "id.h"
+#include "regenc.h"
+#include <stdio.h>
+#include <errno.h>
+#include <ctype.h>
+
+#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 malloc YYMALLOC
+#define realloc YYREALLOC
+#define calloc YYCALLOC
+#define free YYFREE
+
+#ifndef RIPPER
+static ID register_symid(ID, const char *, long, rb_encoding *);
+#define REGISTER_SYMID(id, name) register_symid(id, name, strlen(name), enc)
+#include "id.c"
+#endif
+
+#define is_notop_id(id) ((id)>tLAST_TOKEN)
+#define is_local_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_LOCAL)
+#define is_global_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_GLOBAL)
+#define is_instance_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_INSTANCE)
+#define is_attrset_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_ATTRSET)
+#define is_const_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CONST)
+#define is_class_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_CLASS)
+#define is_junk_id(id) (is_notop_id(id)&&((id)&ID_SCOPE_MASK)==ID_JUNK)
+
+#define is_asgn_or_id(id) ((is_notop_id(id)) && \
+ (((id)&ID_SCOPE_MASK) == ID_GLOBAL || \
+ ((id)&ID_SCOPE_MASK) == ID_INSTANCE || \
+ ((id)&ID_SCOPE_MASK) == ID_CLASS))
+
+enum lex_state_e {
+ EXPR_BEG, /* ignore newline, +/- is a sign. */
+ EXPR_END, /* newline significant, +/- is a operator. */
+ EXPR_ENDARG, /* ditto, and unbound braces. */
+ EXPR_ARG, /* newline significant, +/- is a operator. */
+ EXPR_CMDARG, /* newline significant, +/- is a operator. */
+ EXPR_MID, /* newline significant, +/- is a operator. */
+ EXPR_FNAME, /* ignore newline, no reserved words. */
+ EXPR_DOT, /* right after `.' or `::', no reserved words. */
+ EXPR_CLASS, /* immediate after `class', no here document. */
+ EXPR_VALUE /* alike EXPR_BEG but label is disallowed. */
+};
+
+# ifdef HAVE_LONG_LONG
+typedef unsigned LONG_LONG stack_type;
+# else
+typedef unsigned long stack_type;
+# endif
+
+# define BITSTACK_PUSH(stack, n) (stack = (stack<<1)|((n)&1))
+# define BITSTACK_POP(stack) (stack = stack >> 1)
+# define BITSTACK_LEXPOP(stack) (stack = (stack >> 1) | (stack & 1))
+# define BITSTACK_SET_P(stack) (stack&1)
+
+#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 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)
+
+struct vtable {
+ ID *tbl;
+ int pos;
+ int capa;
+ struct vtable *prev;
+};
+
+struct local_vars {
+ struct vtable *args;
+ struct vtable *vars;
+ struct local_vars *prev;
+};
+
+#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)
+
+#ifndef RIPPER
+static int
+vtable_size(const struct vtable *tbl)
+{
+ if (POINTER_P(tbl)) {
+ return tbl->pos;
+ }
+ else {
+ return 0;
+ }
+}
+
+#define VTBL_DEBUG 0
+
+static struct vtable *
+vtable_alloc(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;
+ if (VTBL_DEBUG) printf("vtable_alloc: %p\n", tbl);
+ return tbl;
+}
+
+static void
+vtable_free(struct vtable *tbl)
+{
+ if (VTBL_DEBUG)printf("vtable_free: %p\n", tbl);
+ if (POINTER_P(tbl)) {
+ if (tbl->tbl) {
+ xfree(tbl->tbl);
+ }
+ xfree(tbl);
+ }
+}
+
+static void
+vtable_add(struct vtable *tbl, ID id)
+{
+ if (!POINTER_P(tbl)) {
+ rb_bug("vtable_add: vtable is not allocated (%p)", tbl);
+ }
+ if (VTBL_DEBUG) printf("vtable_add: %p, %s\n", tbl, rb_id2name(id));
+
+ if (tbl->pos == tbl->capa) {
+ tbl->capa = tbl->capa * 2;
+ REALLOC_N(tbl->tbl, ID, tbl->capa);
+ }
+ tbl->tbl[tbl->pos++] = id;
+}
+
+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 1;
+ }
+ }
+ }
+ return 0;
+}
+#endif
+
+/*
+ Structure of Lexer Buffer:
+
+ lex_pbeg tokp lex_p lex_pend
+ | | | |
+ |-----------+--------------+------------|
+ |<------------>|
+ token
+*/
+struct parser_params {
+ int is_ripper;
+ NODE *heap;
+
+ YYSTYPE *parser_yylval;
+ VALUE eofp;
+
+ NODE *parser_lex_strterm;
+ enum lex_state_e parser_lex_state;
+ stack_type parser_cond_stack;
+ stack_type parser_cmdarg_stack;
+ int parser_class_nest;
+ int parser_paren_nest;
+ int parser_lpar_beg;
+ int parser_in_single;
+ int parser_in_def;
+ int parser_compile_for_eval;
+ VALUE parser_cur_mid;
+ int parser_in_defined;
+ char *parser_tokenbuf;
+ int parser_tokidx;
+ int parser_toksiz;
+ VALUE parser_lex_input;
+ VALUE parser_lex_lastline;
+ VALUE parser_lex_nextline;
+ const char *parser_lex_pbeg;
+ const char *parser_lex_p;
+ const char *parser_lex_pend;
+ int parser_heredoc_end;
+ int parser_command_start;
+ NODE *parser_deferred_nodes;
+ int parser_lex_gets_ptr;
+ VALUE (*parser_lex_gets)(struct parser_params*,VALUE);
+ struct local_vars *parser_lvtbl;
+ int parser_ruby__end__seen;
+ int line_count;
+ int has_shebang;
+ char *parser_ruby_sourcefile; /* current source file */
+ int parser_ruby_sourceline; /* current line no. */
+ rb_encoding *enc;
+ rb_encoding *utf8;
+
+ int parser_yydebug;
+
+#ifndef RIPPER
+ /* Ruby core only */
+ NODE *parser_eval_tree_begin;
+ NODE *parser_eval_tree;
+ VALUE debug_lines;
+ VALUE coverage;
+ int nerr;
+#else
+ /* Ripper only */
+ VALUE parser_ruby_sourcefile_string;
+ const char *tokp;
+ VALUE delayed;
+ int delayed_line;
+ int delayed_col;
+
+ VALUE value;
+ VALUE result;
+ VALUE parsing_thread;
+ int toplevel_p;
+#endif
+};
+
+#define UTF8_ENC() (parser->utf8 ? parser->utf8 : \
+ (parser->utf8 = rb_utf8_encoding()))
+#define STR_NEW(p,n) rb_enc_str_new((p),(n),parser->enc)
+#define STR_NEW0() rb_usascii_str_new(0,0)
+#define STR_NEW2(p) rb_enc_str_new((p),strlen(p),parser->enc)
+#define STR_NEW3(p,n,e,func) parser_str_new((p),(n),(e),(func),parser->enc)
+#define STR_ENC(m) ((m)?parser->enc:rb_usascii_encoding())
+#define ENC_SINGLE(cr) ((cr)==ENC_CODERANGE_7BIT)
+#define TOK_INTERN(mb) rb_intern3(tok(), toklen(), STR_ENC(mb))
+
+#ifdef YYMALLOC
+void *rb_parser_malloc(struct parser_params *, size_t);
+void *rb_parser_realloc(struct parser_params *, void *, size_t);
+void *rb_parser_calloc(struct parser_params *, size_t, size_t);
+void rb_parser_free(struct parser_params *, void *);
+#endif
+
+static int parser_yyerror(struct parser_params*, const char*);
+#define yyerror(msg) parser_yyerror(parser, msg)
+
+#define YYLEX_PARAM parser
+
+#define lex_strterm (parser->parser_lex_strterm)
+#define lex_state (parser->parser_lex_state)
+#define cond_stack (parser->parser_cond_stack)
+#define cmdarg_stack (parser->parser_cmdarg_stack)
+#define class_nest (parser->parser_class_nest)
+#define paren_nest (parser->parser_paren_nest)
+#define lpar_beg (parser->parser_lpar_beg)
+#define in_single (parser->parser_in_single)
+#define in_def (parser->parser_in_def)
+#define compile_for_eval (parser->parser_compile_for_eval)
+#define cur_mid (parser->parser_cur_mid)
+#define in_defined (parser->parser_in_defined)
+#define tokenbuf (parser->parser_tokenbuf)
+#define tokidx (parser->parser_tokidx)
+#define toksiz (parser->parser_toksiz)
+#define lex_input (parser->parser_lex_input)
+#define lex_lastline (parser->parser_lex_lastline)
+#define lex_nextline (parser->parser_lex_nextline)
+#define lex_pbeg (parser->parser_lex_pbeg)
+#define lex_p (parser->parser_lex_p)
+#define lex_pend (parser->parser_lex_pend)
+#define heredoc_end (parser->parser_heredoc_end)
+#define command_start (parser->parser_command_start)
+#define deferred_nodes (parser->parser_deferred_nodes)
+#define lex_gets_ptr (parser->parser_lex_gets_ptr)
+#define lex_gets (parser->parser_lex_gets)
+#define lvtbl (parser->parser_lvtbl)
+#define ruby__end__seen (parser->parser_ruby__end__seen)
+#define ruby_sourceline (parser->parser_ruby_sourceline)
+#define ruby_sourcefile (parser->parser_ruby_sourcefile)
+#define yydebug (parser->parser_yydebug)
+#ifdef RIPPER
+#else
+#define ruby_eval_tree (parser->parser_eval_tree)
+#define ruby_eval_tree_begin (parser->parser_eval_tree_begin)
+#define ruby_debug_lines (parser->debug_lines)
+#define ruby_coverage (parser->coverage)
+#endif
+
+static int yylex(void*, void*);
+
+#ifndef RIPPER
+#define yyparse ruby_yyparse
+
+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)
+
+static NODE *cond_gen(struct parser_params*,NODE*);
+#define cond(node) cond_gen(parser, node)
+static NODE *logop_gen(struct parser_params*,enum node_type,NODE*,NODE*);
+#define logop(type,node1,node2) logop_gen(parser, type, node1, node2)
+
+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*);
+#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*);
+#define block_append(h,t) block_append_gen(parser,h,t)
+static NODE *list_append_gen(struct parser_params*,NODE*,NODE*);
+#define list_append(l,i) list_append_gen(parser,l,i)
+static NODE *list_concat_gen(struct parser_params*,NODE*,NODE*);
+#define list_concat(h,t) list_concat_gen(parser,h,t)
+static NODE *arg_append_gen(struct parser_params*,NODE*,NODE*);
+#define arg_append(h,t) arg_append_gen(parser,h,t)
+static NODE *arg_concat_gen(struct parser_params*,NODE*,NODE*);
+#define arg_concat(h,t) arg_concat_gen(parser,h,t)
+static NODE *literal_concat_gen(struct parser_params*,NODE*,NODE*);
+#define literal_concat(h,t) literal_concat_gen(parser,h,t)
+static NODE *new_evstr_gen(struct parser_params*,NODE*);
+#define new_evstr(n) new_evstr_gen(parser,n)
+static NODE *evstr2dstr_gen(struct parser_params*,NODE*);
+#define evstr2dstr(n) evstr2dstr_gen(parser,n)
+static NODE *splat_array(NODE*);
+
+static NODE *call_bin_op_gen(struct parser_params*,NODE*,ID,NODE*);
+#define call_bin_op(recv,id,arg1) call_bin_op_gen(parser, recv,id,arg1)
+static NODE *call_uni_op_gen(struct parser_params*,NODE*,ID);
+#define call_uni_op(recv,id) call_uni_op_gen(parser, recv,id)
+
+static NODE *new_args_gen(struct parser_params*,NODE*,NODE*,ID,NODE*,ID);
+#define new_args(f,o,r,p,b) new_args_gen(parser, f,o,r,p,b)
+static void shadowing_lvar_gen(struct parser_params*,ID);
+#define shadowing_lvar(name) shadowing_lvar_gen(parser, name)
+
+static NODE *negate_lit(NODE*);
+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*);
+#define new_yield(node) new_yield_gen(parser, node)
+
+static NODE *gettable_gen(struct parser_params*,ID);
+#define gettable(id) gettable_gen(parser,id)
+static NODE *assignable_gen(struct parser_params*,ID,NODE*);
+#define assignable(id,node) assignable_gen(parser, id, node)
+static void new_bv_gen(struct parser_params*,ID);
+#define new_bv(id) new_bv_gen(parser, id)
+static NODE *aryset_gen(struct parser_params*,NODE*,NODE*);
+#define aryset(node1,node2) aryset_gen(parser, node1, node2)
+static NODE *attrset_gen(struct parser_params*,NODE*,ID);
+#define attrset(node,id) attrset_gen(parser, node, id)
+
+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*);
+#define node_assign(node1, node2) node_assign_gen(parser, node1, node2)
+
+static NODE *match_op_gen(struct parser_params*,NODE*,NODE*);
+#define match_op(node1,node2) match_op_gen(parser, node1, node2)
+
+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 int local_var_gen(struct parser_params*, ID);
+#define local_var(id) local_var_gen(parser, id);
+static int 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);
+#define local_id(id) local_id_gen(parser, id)
+static ID *local_tbl_gen(struct parser_params*);
+#define local_tbl() local_tbl_gen(parser)
+static ID internal_id_gen(struct parser_params*);
+#define internal_id() internal_id_gen(parser)
+
+static void dyna_push_gen(struct parser_params*);
+#define dyna_push() dyna_push_gen(parser)
+static void dyna_pop_gen(struct parser_params*);
+#define dyna_pop() dyna_pop_gen(parser)
+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);
+#define dvar_defined(id) dvar_defined_gen(parser, id)
+static int dvar_curr_gen(struct parser_params*,ID);
+#define dvar_curr(id) dvar_curr_gen(parser, id)
+
+static void fixup_nodes(NODE **);
+
+extern int rb_dvar_defined(ID);
+extern int rb_local_defined(ID);
+extern int rb_parse_in_eval(void);
+
+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 void 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, NODE *match);
+#define reg_named_capture_assign(regexp,match) reg_named_capture_assign_gen(parser,regexp,match)
+int rb_enc_symname2_p(const char *, int, rb_encoding *);
+#else
+#define remove_begin(node) (node)
+#endif /* !RIPPER */
+static int lvar_defined_gen(struct parser_params*, ID);
+#define lvar_defined(id) lvar_defined_gen(parser, id)
+
+#define RE_OPTION_ONCE (1<<16)
+#define RE_OPTION_ENCODING_SHIFT 8
+#define RE_OPTION_ENCODING(e) (((e)&0xff)<<RE_OPTION_ENCODING_SHIFT)
+#define RE_OPTION_ENCODING_IDX(o) (((o)>>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
+
+#define NODE_STRTERM NODE_ZARRAY /* nothing to gc */
+#define NODE_HEREDOC NODE_ARRAY /* 1, 3 to gc */
+#define SIGN_EXTEND(x,n) (((1<<(n)-1)^((x)&~(~0<<(n))))-(1<<(n)-1))
+#define nd_func u1.id
+#if SIZEOF_SHORT == 2
+#define nd_term(node) ((signed short)(node)->u2.id)
+#else
+#define nd_term(node) SIGN_EXTEND((node)->u2.id, CHAR_BIT*2)
+#endif
+#define nd_paren(node) (char)((node)->u2.id >> CHAR_BIT*2)
+#define nd_nest u3.cnt
+
+/****** Ripper *******/
+
+#ifdef RIPPER
+#define RIPPER_VERSION "0.1.0"
+
+#include "eventids1.c"
+#include "eventids2.c"
+static ID ripper_id_gets;
+
+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);
+
+#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 yyparse ripper_yyparse
+
+static VALUE ripper_intern(const char*);
+static VALUE ripper_id2sym(ID);
+#ifdef __GNUC__
+#define ripper_id2sym(id) ((id) < 256 && rb_ispunct(id) ? \
+ ID2SYM(id) : ripper_id2sym(id))
+#endif
+
+#define arg_new() dispatch0(args_new)
+#define arg_add(l,a) dispatch2(args_add, l, a)
+#define arg_prepend(l,a) dispatch2(args_prepend, 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 params_new(pars, opts, rest, pars2, blk) \
+ dispatch5(params, pars, opts, rest, pars2, blk)
+
+#define blockvar_new(p,v) dispatch2(block_var, p, v)
+#define blockvar_add_star(l,a) dispatch2(block_var_add_star, l, a)
+#define blockvar_add_block(l,a) dispatch2(block_var_add_block, l, a)
+
+#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))
+
+#define FIXME 0
+
+#endif /* RIPPER */
+
+#ifndef RIPPER
+# define ifndef_ripper(x) x
+#else
+# define ifndef_ripper(x)
+#endif
+
+#ifndef RIPPER
+# define rb_warn0(fmt) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt)
+# define rb_warnI(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt, a)
+# define rb_warnS(fmt,a) rb_compile_warn(ruby_sourcefile, ruby_sourceline, fmt, a)
+# define rb_warning0(fmt) rb_compile_warning(ruby_sourcefile, ruby_sourceline, fmt)
+# define rb_warningS(fmt,a) rb_compile_warning(ruby_sourcefile, ruby_sourceline, fmt, a)
+#else
+# define rb_warn0(fmt) ripper_warn0(parser, fmt)
+# define rb_warnI(fmt,a) ripper_warnI(parser, fmt, a)
+# define rb_warnS(fmt,a) ripper_warnS(parser, fmt, a)
+# define rb_warning0(fmt) ripper_warning0(parser, fmt)
+# define rb_warningS(fmt,a) ripper_warningS(parser, fmt, a)
+static void ripper_warn0(struct parser_params*, const char*);
+static void ripper_warnI(struct parser_params*, const char*, int);
+#if 0
+static void ripper_warnS(struct parser_params*, const char*, const char*);
+#endif
+static void ripper_warning0(struct parser_params*, const char*);
+static void ripper_warningS(struct parser_params*, const char*, const char*);
+#endif
+
+#ifdef RIPPER
+static void ripper_compile_error(struct parser_params*, const char *fmt, ...);
+# define rb_compile_error ripper_compile_error
+# define compile_error ripper_compile_error
+# define PARSER_ARG parser,
+#else
+# define compile_error parser->nerr++,rb_compile_error
+# define PARSER_ARG ruby_sourcefile, ruby_sourceline,
+#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
+
+%}
+
+%pure_parser
+%parse-param {struct parser_params *parser}
+
+%union {
+ VALUE val;
+ NODE *node;
+ ID id;
+ int num;
+}
+
+/*%%%*/
+%token
+/*%
+%token <val>
+%*/
+ 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 <id> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR tLABEL
+%token <node> tINTEGER tFLOAT tSTRING_CONTENT tCHAR
+%token <node> tNTH_REF tBACK_REF
+%token <num> tREGEXP_END
+
+%type <node> singleton strings string string1 xstring regexp
+%type <node> string_contents xstring_contents string_content
+%type <node> words qwords word_list qword_list word
+%type <node> literal numeric dsym cpath
+%type <node> bodystmt compstmt stmts stmt expr arg primary command command_call method_call
+%type <node> expr_value arg_value primary_value
+%type <node> if_tail opt_else case_body cases opt_rescue exc_list exc_var opt_ensure
+%type <node> args call_args opt_call_args
+%type <node> paren_args opt_paren_args
+%type <node> command_args aref_args opt_block_arg block_arg var_ref var_lhs
+%type <node> mrhs superclass block_call block_command
+%type <node> f_arglist f_args f_arg f_arg_item f_optarg f_marg f_marg_list f_margs
+%type <node> assoc_list assocs assoc undef_list backref string_dvar for_var
+%type <node> block_param opt_block_param block_param_def f_opt
+%type <node> bv_decls opt_bv_decl bvar
+%type <node> lambda f_larglist lambda_body
+%type <node> brace_block cmd_brace_block do_block lhs none fitem
+%type <node> mlhs mlhs_head mlhs_basic mlhs_item mlhs_node mlhs_post mlhs_inner
+%type <id> fsym variable sym symbol operation operation2 operation3
+%type <id> cname fname op f_rest_arg f_block_arg opt_f_block_arg f_norm_arg f_bad_arg
+/*%%%*/
+/*%
+%type <val> program reswords then do dot_or_colon
+%*/
+%token tUPLUS /* unary+ */
+%token tUMINUS /* unary- */
+%token tPOW /* ** */
+%token tCMP /* <=> */
+%token tEQ /* == */
+%token tEQQ /* === */
+%token tNEQ /* != */
+%token tGEQ /* >= */
+%token tLEQ /* <= */
+%token tANDOP tOROP /* && and || */
+%token tMATCH tNMATCH /* =~ and !~ */
+%token tDOT2 tDOT3 /* .. and ... */
+%token tAREF tASET /* [] and []= */
+%token tLSHFT tRSHFT /* << and >> */
+%token tCOLON2 /* :: */
+%token tCOLON3 /* :: at EXPR_BEG */
+%token <id> tOP_ASGN /* +=, -= etc. */
+%token tASSOC /* => */
+%token tLPAREN /* ( */
+%token tLPAREN_ARG /* ( */
+%token tRPAREN /* ) */
+%token tLBRACK /* [ */
+%token tLBRACE /* { */
+%token tLBRACE_ARG /* { */
+%token tSTAR /* * */
+%token tAMPER /* & */
+%token tLAMBDA /* -> */
+%token tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG
+%token tSTRING_DBEG tSTRING_DVAR tSTRING_END tLAMBEG
+
+/*
+ * 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
+
+%nonassoc idNULL
+%nonassoc idRespond_to
+%nonassoc idIFUNC
+%nonassoc idCFUNC
+%nonassoc idThrowState
+%nonassoc id_core_set_method_alias
+%nonassoc id_core_set_variable_alias
+%nonassoc id_core_undef_method
+%nonassoc id_core_define_method
+%nonassoc id_core_define_singleton_method
+%nonassoc id_core_set_postexe
+
+%token tLAST_TOKEN
+
+%%
+program : {
+ lex_state = EXPR_BEG;
+ /*%%%*/
+ local_push(compile_for_eval);
+ /*%
+ %*/
+ }
+ 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));
+ local_pop();
+ /*%
+ $$ = $2;
+ parser->result = dispatch1(program, $$);
+ %*/
+ }
+ ;
+
+bodystmt : compstmt
+ opt_rescue
+ opt_else
+ opt_ensure
+ {
+ /*%%%*/
+ $$ = $1;
+ if ($2) {
+ $$ = NEW_RESCUE($1, $2, $3);
+ }
+ else if ($3) {
+ rb_warn0("else without rescue is useless");
+ $$ = block_append($$, $3);
+ }
+ if ($4) {
+ if ($$) {
+ $$ = NEW_ENSURE($$, $4);
+ }
+ else {
+ $$ = block_append($4, NEW_NIL());
+ }
+ }
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch4(body_stmt,
+ escape_Qundef($1),
+ escape_Qundef($2),
+ escape_Qundef($3),
+ escape_Qundef($4));
+ %*/
+ }
+ ;
+
+compstmt : stmts opt_terms
+ {
+ /*%%%*/
+ void_stmts($1);
+ fixup_nodes(&deferred_nodes);
+ /*%
+ %*/
+ $$ = $1;
+ }
+ ;
+
+stmts : none
+ {
+ /*%%%*/
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch2(stmts_add, dispatch0(stmts_new),
+ dispatch0(void_stmt));
+ %*/
+ }
+ | stmt
+ {
+ /*%%%*/
+ $$ = newline_node($1);
+ /*%
+ $$ = dispatch2(stmts_add, dispatch0(stmts_new), $1);
+ %*/
+ }
+ | stmts terms stmt
+ {
+ /*%%%*/
+ $$ = block_append($1, newline_node($3));
+ /*%
+ $$ = dispatch2(stmts_add, $1, $3);
+ %*/
+ }
+ | error stmt
+ {
+ $$ = remove_begin($2);
+ }
+ ;
+
+stmt : keyword_alias fitem {lex_state = EXPR_FNAME;} fitem
+ {
+ /*%%%*/
+ $$ = NEW_ALIAS($2, $4);
+ /*%
+ $$ = dispatch2(alias, $2, $4);
+ %*/
+ }
+ | keyword_alias tGVAR tGVAR
+ {
+ /*%%%*/
+ $$ = NEW_VALIAS($2, $3);
+ /*%
+ $$ = dispatch2(var_alias, $2, $3);
+ %*/
+ }
+ | keyword_alias tGVAR tBACK_REF
+ {
+ /*%%%*/
+ char buf[3];
+
+ sprintf(buf, "$%c", (char)$3->nd_nth);
+ $$ = NEW_VALIAS($2, rb_intern(buf));
+ /*%
+ $$ = dispatch2(var_alias, $2, $3);
+ %*/
+ }
+ | keyword_alias tGVAR tNTH_REF
+ {
+ /*%%%*/
+ yyerror("can't make alias for the number variables");
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch2(var_alias, $2, $3);
+ $$ = dispatch1(alias_error, $$);
+ %*/
+ }
+ | keyword_undef undef_list
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(undef, $2);
+ %*/
+ }
+ | stmt modifier_if expr_value
+ {
+ /*%%%*/
+ $$ = NEW_IF(cond($3), remove_begin($1), 0);
+ fixpos($$, $3);
+ /*%
+ $$ = dispatch2(if_mod, $3, $1);
+ %*/
+ }
+ | stmt modifier_unless expr_value
+ {
+ /*%%%*/
+ $$ = NEW_UNLESS(cond($3), remove_begin($1), 0);
+ fixpos($$, $3);
+ /*%
+ $$ = dispatch2(unless_mod, $3, $1);
+ %*/
+ }
+ | stmt modifier_while expr_value
+ {
+ /*%%%*/
+ if ($1 && nd_type($1) == NODE_BEGIN) {
+ $$ = NEW_WHILE(cond($3), $1->nd_body, 0);
+ }
+ else {
+ $$ = NEW_WHILE(cond($3), $1, 1);
+ }
+ /*%
+ $$ = dispatch2(while_mod, $3, $1);
+ %*/
+ }
+ | stmt modifier_until expr_value
+ {
+ /*%%%*/
+ if ($1 && nd_type($1) == NODE_BEGIN) {
+ $$ = NEW_UNTIL(cond($3), $1->nd_body, 0);
+ }
+ else {
+ $$ = NEW_UNTIL(cond($3), $1, 1);
+ }
+ /*%
+ $$ = dispatch2(until_mod, $3, $1);
+ %*/
+ }
+ | stmt modifier_rescue stmt
+ {
+ /*%%%*/
+ NODE *resq = NEW_RESBODY(0, remove_begin($3), 0);
+ $$ = NEW_RESCUE(remove_begin($1), resq, 0);
+ /*%
+ $$ = dispatch2(rescue_mod, $3, $1);
+ %*/
+ }
+ | keyword_BEGIN
+ {
+ if (in_def || in_single) {
+ yyerror("BEGIN in method");
+ }
+ /*%%%*/
+ /* local_push(0); */
+ /*%
+ %*/
+ }
+ '{' compstmt '}'
+ {
+ /*%%%*/
+ ruby_eval_tree_begin = block_append(ruby_eval_tree_begin,
+ $4);
+ /* NEW_PREEXE($4)); */
+ /* local_pop(); */
+ $$ = 0;
+ /*%
+ $$ = dispatch1(BEGIN, $4);
+ %*/
+ }
+ | keyword_END '{' compstmt '}'
+ {
+ if (in_def || in_single) {
+ rb_warn0("END in method; use at_exit");
+ }
+ /*%%%*/
+ $$ = NEW_POSTEXE(NEW_NODE(
+ NODE_SCOPE, 0 /* tbl */, $3 /* body */, 0 /* args */));
+ /*%
+ $$ = dispatch1(END, $3);
+ %*/
+ }
+ | lhs '=' command_call
+ {
+ /*%%%*/
+ value_expr($3);
+ $$ = node_assign($1, $3);
+ /*%
+ $$ = dispatch2(assign, $1, $3);
+ %*/
+ }
+ | mlhs '=' command_call
+ {
+ /*%%%*/
+ value_expr($3);
+ $1->nd_value = $3;
+ $$ = $1;
+ /*%
+ $$ = dispatch2(massign, $1, $3);
+ %*/
+ }
+ | var_lhs tOP_ASGN command_call
+ {
+ /*%%%*/
+ value_expr($3);
+ if ($1) {
+ ID vid = $1->nd_vid;
+ if ($2 == tOROP) {
+ $1->nd_value = $3;
+ $$ = NEW_OP_ASGN_OR(gettable(vid), $1);
+ if (is_asgn_or_id(vid)) {
+ $$->nd_aid = vid;
+ }
+ }
+ else if ($2 == tANDOP) {
+ $1->nd_value = $3;
+ $$ = NEW_OP_ASGN_AND(gettable(vid), $1);
+ }
+ else {
+ $$ = $1;
+ $$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3));
+ }
+ }
+ else {
+ $$ = NEW_BEGIN(0);
+ }
+ /*%
+ $$ = dispatch3(opassign, $1, $2, $3);
+ %*/
+ }
+ | primary_value '[' opt_call_args rbracket tOP_ASGN command_call
+ {
+ /*%%%*/
+ NODE *args;
+
+ value_expr($6);
+ if (!$3) $3 = NEW_ZARRAY();
+ args = arg_concat($6, $3);
+ if ($5 == tOROP) {
+ $5 = 0;
+ }
+ else if ($5 == tANDOP) {
+ $5 = 1;
+ }
+ $$ = NEW_OP_ASGN1($1, $5, args);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch2(aref_field, $1, escape_Qundef($3));
+ $$ = dispatch3(opassign, $$, $5, $6);
+ %*/
+ }
+ | primary_value '.' tIDENTIFIER tOP_ASGN command_call
+ {
+ /*%%%*/
+ value_expr($5);
+ if ($4 == tOROP) {
+ $4 = 0;
+ }
+ else if ($4 == tANDOP) {
+ $4 = 1;
+ }
+ $$ = NEW_OP_ASGN2($1, $3, $4, $5);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ $$ = dispatch3(opassign, $$, $4, $5);
+ %*/
+ }
+ | primary_value '.' tCONSTANT tOP_ASGN command_call
+ {
+ /*%%%*/
+ value_expr($5);
+ if ($4 == tOROP) {
+ $4 = 0;
+ }
+ else if ($4 == tANDOP) {
+ $4 = 1;
+ }
+ $$ = NEW_OP_ASGN2($1, $3, $4, $5);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ $$ = dispatch3(opassign, $$, $4, $5);
+ %*/
+ }
+ | primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call
+ {
+ /*%%%*/
+ value_expr($5);
+ if ($4 == tOROP) {
+ $4 = 0;
+ }
+ else if ($4 == tANDOP) {
+ $4 = 1;
+ }
+ $$ = NEW_OP_ASGN2($1, $3, $4, $5);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(field, $1, ripper_intern("::"), $3);
+ $$ = dispatch3(opassign, $$, $4, $5);
+ %*/
+ }
+ | backref tOP_ASGN command_call
+ {
+ /*%%%*/
+ rb_backref_error($1);
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch2(assign, dispatch1(var_field, $1), $3);
+ $$ = dispatch1(assign_error, $$);
+ %*/
+ }
+ | lhs '=' mrhs
+ {
+ /*%%%*/
+ value_expr($3);
+ $$ = node_assign($1, $3);
+ /*%
+ $$ = dispatch2(assign, $1, $3);
+ %*/
+ }
+ | mlhs '=' arg_value
+ {
+ /*%%%*/
+ $1->nd_value = $3;
+ $$ = $1;
+ /*%
+ dispatch2(massign, $1, $3);
+ %*/
+ }
+ | mlhs '=' mrhs
+ {
+ /*%%%*/
+ $1->nd_value = $3;
+ $$ = $1;
+ /*%
+ $$ = dispatch2(massign, $1, $3);
+ %*/
+ }
+ | expr
+ ;
+
+expr : command_call
+ | expr keyword_and expr
+ {
+ /*%%%*/
+ $$ = logop(NODE_AND, $1, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("and"), $3);
+ %*/
+ }
+ | expr keyword_or expr
+ {
+ /*%%%*/
+ $$ = logop(NODE_OR, $1, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("or"), $3);
+ %*/
+ }
+ | keyword_not expr
+ {
+ /*%%%*/
+ $$ = call_uni_op(cond($2), '!');
+ /*%
+ $$ = dispatch2(unary, ripper_intern("not"), $2);
+ %*/
+ }
+ | '!' command_call
+ {
+ /*%%%*/
+ $$ = call_uni_op(cond($2), '!');
+ /*%
+ $$ = dispatch2(unary, ripper_id2sym('!'), $2);
+ %*/
+ }
+ | arg
+ ;
+
+expr_value : expr
+ {
+ /*%%%*/
+ value_expr($1);
+ $$ = $1;
+ if (!$$) $$ = NEW_NIL();
+ /*%
+ $$ = $1;
+ %*/
+ }
+ ;
+
+command_call : command
+ | block_command
+ | keyword_return call_args
+ {
+ /*%%%*/
+ $$ = NEW_RETURN(ret_args($2));
+ /*%
+ $$ = dispatch1(return, $2);
+ %*/
+ }
+ | keyword_break call_args
+ {
+ /*%%%*/
+ $$ = NEW_BREAK(ret_args($2));
+ /*%
+ $$ = dispatch1(break, $2);
+ %*/
+ }
+ | keyword_next call_args
+ {
+ /*%%%*/
+ $$ = NEW_NEXT(ret_args($2));
+ /*%
+ $$ = dispatch1(next, $2);
+ %*/
+ }
+ ;
+
+block_command : block_call
+ | block_call '.' operation2 command_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ /*%
+ $$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
+ $$ = method_arg($$, $4);
+ %*/
+ }
+ | block_call tCOLON2 operation2 command_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ /*%
+ $$ = dispatch3(call, $1, ripper_intern("::"), $3);
+ $$ = method_arg($$, $4);
+ %*/
+ }
+ ;
+
+cmd_brace_block : tLBRACE_ARG
+ {
+ /*%%%*/
+ dyna_push();
+ $<num>$ = ruby_sourceline;
+ /*%
+ %*/
+ }
+ opt_block_param
+ compstmt
+ '}'
+ {
+ /*%%%*/
+ $$ = NEW_ITER($3,$4);
+ nd_set_line($$, $<num>2);
+ dyna_pop();
+ /*%
+ $$ = dispatch2(brace_block, escape_Qundef($3), $4);
+ %*/
+ }
+ ;
+
+command : operation command_args %prec tLOWEST
+ {
+ /*%%%*/
+ $$ = NEW_FCALL($1, $2);
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch2(command, $1, $2);
+ %*/
+ }
+ | operation command_args cmd_brace_block
+ {
+ /*%%%*/
+ block_dup_check($2,$3);
+ $3->nd_iter = NEW_FCALL($1, $2);
+ $$ = $3;
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch2(command, $1, $2);
+ $$ = method_add_block($$, $3);
+ %*/
+ }
+ | primary_value '.' operation2 command_args %prec tLOWEST
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4);
+ %*/
+ }
+ | primary_value '.' operation2 command_args cmd_brace_block
+ {
+ /*%%%*/
+ block_dup_check($4,$5);
+ $5->nd_iter = NEW_CALL($1, $3, $4);
+ $$ = $5;
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch4(command_call, $1, ripper_id2sym('.'), $3, $4);
+ $$ = method_add_block($$, $5);
+ %*/
+ }
+ | primary_value tCOLON2 operation2 command_args %prec tLOWEST
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4);
+ %*/
+ }
+ | primary_value tCOLON2 operation2 command_args cmd_brace_block
+ {
+ /*%%%*/
+ block_dup_check($4,$5);
+ $5->nd_iter = NEW_CALL($1, $3, $4);
+ $$ = $5;
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch4(command_call, $1, ripper_intern("::"), $3, $4);
+ $$ = method_add_block($$, $5);
+ %*/
+ }
+ | keyword_super command_args
+ {
+ /*%%%*/
+ $$ = NEW_SUPER($2);
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch1(super, $2);
+ %*/
+ }
+ | keyword_yield command_args
+ {
+ /*%%%*/
+ $$ = new_yield($2);
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch1(yield, $2);
+ %*/
+ }
+ ;
+
+mlhs : mlhs_basic
+ | tLPAREN mlhs_inner rparen
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(mlhs_paren, $2);
+ %*/
+ }
+ ;
+
+mlhs_inner : mlhs_basic
+ | tLPAREN mlhs_inner rparen
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(NEW_LIST($2), 0);
+ /*%
+ $$ = dispatch1(mlhs_paren, $2);
+ %*/
+ }
+ ;
+
+mlhs_basic : mlhs_head
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, 0);
+ /*%
+ $$ = $1;
+ %*/
+ }
+ | mlhs_head mlhs_item
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(list_append($1,$2), 0);
+ /*%
+ $$ = mlhs_add($1, $2);
+ %*/
+ }
+ | mlhs_head tSTAR mlhs_node
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, $3);
+ /*%
+ $$ = mlhs_add_star($1, $3);
+ %*/
+ }
+ | mlhs_head tSTAR mlhs_node ',' mlhs_post
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, NEW_POSTARG($3,$5));
+ /*%
+ $$ = mlhs_add_star($1, $3);
+ %*/
+ }
+ | mlhs_head tSTAR
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, -1);
+ /*%
+ $$ = mlhs_add_star($1, Qnil);
+ %*/
+ }
+ | mlhs_head tSTAR ',' mlhs_post
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, NEW_POSTARG(-1, $4));
+ /*%
+ $$ = mlhs_add_star($1, Qnil);
+ %*/
+ }
+ | tSTAR mlhs_node
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, $2);
+ /*%
+ $$ = mlhs_add_star(mlhs_new(), $2);
+ %*/
+ }
+ | tSTAR mlhs_node ',' mlhs_post
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, NEW_POSTARG($2,$4));
+ /*%
+ $$ = mlhs_add_star(mlhs_new(), $2);
+ %*/
+ }
+ | tSTAR
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, -1);
+ /*%
+ $$ = mlhs_add_star(mlhs_new(), Qnil);
+ %*/
+ }
+ | tSTAR ',' mlhs_post
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, NEW_POSTARG(-1, $3));
+ /*%
+ $$ = mlhs_add_star(mlhs_new(), Qnil);
+ %*/
+ }
+ ;
+
+mlhs_item : mlhs_node
+ | tLPAREN mlhs_inner rparen
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(mlhs_paren, $2);
+ %*/
+ }
+ ;
+
+mlhs_head : mlhs_item ','
+ {
+ /*%%%*/
+ $$ = NEW_LIST($1);
+ /*%
+ $$ = mlhs_add(mlhs_new(), $1);
+ %*/
+ }
+ | mlhs_head mlhs_item ','
+ {
+ /*%%%*/
+ $$ = list_append($1, $2);
+ /*%
+ $$ = mlhs_add($1, $2);
+ %*/
+ }
+ ;
+
+mlhs_post : mlhs_item
+ {
+ /*%%%*/
+ $$ = NEW_LIST($1);
+ /*%
+ $$ = mlhs_add(mlhs_new(), $1);
+ %*/
+ }
+ | mlhs_post ',' mlhs_item
+ {
+ /*%%%*/
+ $$ = list_append($1, $3);
+ /*%
+ $$ = mlhs_add($1, $3);
+ %*/
+ }
+ ;
+
+mlhs_node : variable
+ {
+ /*%%%*/
+ $$ = assignable($1, 0);
+ /*%
+ $$ = $1;
+ %*/
+ }
+ | primary_value '[' opt_call_args rbracket
+ {
+ /*%%%*/
+ $$ = aryset($1, $3);
+ /*%
+ $$ = dispatch2(aref_field, $1, escape_Qundef($3));
+ %*/
+ }
+ | primary_value '.' tIDENTIFIER
+ {
+ /*%%%*/
+ $$ = attrset($1, $3);
+ /*%
+ $$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ %*/
+ }
+ | primary_value tCOLON2 tIDENTIFIER
+ {
+ /*%%%*/
+ $$ = attrset($1, $3);
+ /*%
+ $$ = dispatch2(const_path_field, $1, $3);
+ %*/
+ }
+ | primary_value '.' tCONSTANT
+ {
+ /*%%%*/
+ $$ = attrset($1, $3);
+ /*%
+ $$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ %*/
+ }
+ | primary_value tCOLON2 tCONSTANT
+ {
+ /*%%%*/
+ if (in_def || in_single)
+ yyerror("dynamic constant assignment");
+ $$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
+ /*%
+ if (in_def || in_single)
+ yyerror("dynamic constant assignment");
+ $$ = dispatch2(const_path_field, $1, $3);
+ %*/
+ }
+ | tCOLON3 tCONSTANT
+ {
+ /*%%%*/
+ if (in_def || in_single)
+ yyerror("dynamic constant assignment");
+ $$ = NEW_CDECL(0, 0, NEW_COLON3($2));
+ /*%
+ $$ = dispatch1(top_const_field, $2);
+ %*/
+ }
+ | backref
+ {
+ /*%%%*/
+ rb_backref_error($1);
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch1(var_field, $1);
+ $$ = dispatch1(assign_error, $$);
+ %*/
+ }
+ ;
+
+lhs : variable
+ {
+ /*%%%*/
+ if (!($$ = assignable($1, 0))) $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch1(var_field, $1);
+ %*/
+ }
+ | primary_value '[' opt_call_args rbracket
+ {
+ /*%%%*/
+ $$ = aryset($1, $3);
+ /*%
+ $$ = dispatch2(aref_field, $1, escape_Qundef($3));
+ %*/
+ }
+ | primary_value '.' tIDENTIFIER
+ {
+ /*%%%*/
+ $$ = attrset($1, $3);
+ /*%
+ $$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ %*/
+ }
+ | primary_value tCOLON2 tIDENTIFIER
+ {
+ /*%%%*/
+ $$ = attrset($1, $3);
+ /*%
+ $$ = dispatch3(field, $1, ripper_intern("::"), $3);
+ %*/
+ }
+ | primary_value '.' tCONSTANT
+ {
+ /*%%%*/
+ $$ = attrset($1, $3);
+ /*%
+ $$ = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ %*/
+ }
+ | primary_value tCOLON2 tCONSTANT
+ {
+ /*%%%*/
+ if (in_def || in_single)
+ yyerror("dynamic constant assignment");
+ $$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
+ /*%
+ $$ = dispatch2(const_path_field, $1, $3);
+ if (in_def || in_single) {
+ $$ = dispatch1(assign_error, $$);
+ }
+ %*/
+ }
+ | tCOLON3 tCONSTANT
+ {
+ /*%%%*/
+ if (in_def || in_single)
+ yyerror("dynamic constant assignment");
+ $$ = NEW_CDECL(0, 0, NEW_COLON3($2));
+ /*%
+ $$ = dispatch1(top_const_field, $2);
+ if (in_def || in_single) {
+ $$ = dispatch1(assign_error, $$);
+ }
+ %*/
+ }
+ | backref
+ {
+ /*%%%*/
+ rb_backref_error($1);
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch1(assign_error, $1);
+ %*/
+ }
+ ;
+
+cname : tIDENTIFIER
+ {
+ /*%%%*/
+ yyerror("class/module name must be CONSTANT");
+ /*%
+ $$ = dispatch1(class_name_error, $1);
+ %*/
+ }
+ | tCONSTANT
+ ;
+
+cpath : tCOLON3 cname
+ {
+ /*%%%*/
+ $$ = NEW_COLON3($2);
+ /*%
+ $$ = dispatch1(top_const_ref, $2);
+ %*/
+ }
+ | cname
+ {
+ /*%%%*/
+ $$ = NEW_COLON2(0, $$);
+ /*%
+ $$ = dispatch1(const_ref, $1);
+ %*/
+ }
+ | primary_value tCOLON2 cname
+ {
+ /*%%%*/
+ $$ = NEW_COLON2($1, $3);
+ /*%
+ $$ = dispatch2(const_path_ref, $1, $3);
+ %*/
+ }
+ ;
+
+fname : tIDENTIFIER
+ | tCONSTANT
+ | tFID
+ | op
+ {
+ /*%%%*/
+ lex_state = EXPR_END;
+ $$ = $1;
+ /*%
+ lex_state = EXPR_END;
+ $$ = $1;
+ %*/
+ }
+ | reswords
+ {
+ /*%%%*/
+ lex_state = EXPR_END;
+ $$ = $<id>1;
+ /*%
+ lex_state = EXPR_END;
+ $$ = $1;
+ %*/
+ }
+ ;
+
+fsym : fname
+ | symbol
+ ;
+
+fitem : fsym
+ {
+ /*%%%*/
+ $$ = NEW_LIT(ID2SYM($1));
+ /*%
+ $$ = dispatch1(symbol_literal, $1);
+ %*/
+ }
+ | dsym
+ ;
+
+undef_list : fitem
+ {
+ /*%%%*/
+ $$ = NEW_UNDEF($1);
+ /*%
+ $$ = rb_ary_new3(1, $1);
+ %*/
+ }
+ | undef_list ',' {lex_state = EXPR_FNAME;} fitem
+ {
+ /*%%%*/
+ $$ = block_append($1, NEW_UNDEF($4));
+ /*%
+ rb_ary_push($1, $4);
+ %*/
+ }
+ ;
+
+op : '|' { ifndef_ripper($$ = '|'); }
+ | '^' { 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($$ = tPOW); }
+ | '!' { ifndef_ripper($$ = '!'); }
+ | '~' { 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
+ {
+ /*%%%*/
+ value_expr($3);
+ $$ = node_assign($1, $3);
+ /*%
+ $$ = dispatch2(assign, $1, $3);
+ %*/
+ }
+ | lhs '=' arg modifier_rescue arg
+ {
+ /*%%%*/
+ value_expr($3);
+ $3 = NEW_RESCUE($3, NEW_RESBODY(0,$5,0), 0);
+ $$ = node_assign($1, $3);
+ /*%
+ $$ = dispatch2(assign, $1, dispatch2(rescue_mod, $3, $5));
+ %*/
+ }
+ | var_lhs tOP_ASGN arg
+ {
+ /*%%%*/
+ value_expr($3);
+ if ($1) {
+ ID vid = $1->nd_vid;
+ if ($2 == tOROP) {
+ $1->nd_value = $3;
+ $$ = NEW_OP_ASGN_OR(gettable(vid), $1);
+ if (is_asgn_or_id(vid)) {
+ $$->nd_aid = vid;
+ }
+ }
+ else if ($2 == tANDOP) {
+ $1->nd_value = $3;
+ $$ = NEW_OP_ASGN_AND(gettable(vid), $1);
+ }
+ else {
+ $$ = $1;
+ $$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3));
+ }
+ }
+ else {
+ $$ = NEW_BEGIN(0);
+ }
+ /*%
+ $$ = dispatch3(opassign, $1, $2, $3);
+ %*/
+ }
+ | var_lhs tOP_ASGN arg modifier_rescue arg
+ {
+ /*%%%*/
+ value_expr($3);
+ $3 = NEW_RESCUE($3, NEW_RESBODY(0,$5,0), 0);
+ if ($1) {
+ ID vid = $1->nd_vid;
+ if ($2 == tOROP) {
+ $1->nd_value = $3;
+ $$ = NEW_OP_ASGN_OR(gettable(vid), $1);
+ if (is_asgn_or_id(vid)) {
+ $$->nd_aid = vid;
+ }
+ }
+ else if ($2 == tANDOP) {
+ $1->nd_value = $3;
+ $$ = NEW_OP_ASGN_AND(gettable(vid), $1);
+ }
+ else {
+ $$ = $1;
+ $$->nd_value = NEW_CALL(gettable(vid), $2, NEW_LIST($3));
+ }
+ }
+ else {
+ $$ = NEW_BEGIN(0);
+ }
+ /*%
+ $3 = dispatch2(rescue_mod, $3, $5);
+ $$ = dispatch3(opassign, $1, $2, $3);
+ %*/
+ }
+ | primary_value '[' opt_call_args rbracket tOP_ASGN arg
+ {
+ /*%%%*/
+ NODE *args;
+
+ value_expr($6);
+ if (!$3) $3 = NEW_ZARRAY();
+ args = arg_concat($6, $3);
+ if ($5 == tOROP) {
+ $5 = 0;
+ }
+ else if ($5 == tANDOP) {
+ $5 = 1;
+ }
+ $$ = NEW_OP_ASGN1($1, $5, args);
+ fixpos($$, $1);
+ /*%
+ $1 = dispatch2(aref_field, $1, escape_Qundef($3));
+ $$ = dispatch3(opassign, $1, $5, $6);
+ %*/
+ }
+ | primary_value '.' tIDENTIFIER tOP_ASGN arg
+ {
+ /*%%%*/
+ value_expr($5);
+ if ($4 == tOROP) {
+ $4 = 0;
+ }
+ else if ($4 == tANDOP) {
+ $4 = 1;
+ }
+ $$ = NEW_OP_ASGN2($1, $3, $4, $5);
+ fixpos($$, $1);
+ /*%
+ $1 = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ $$ = dispatch3(opassign, $1, $4, $5);
+ %*/
+ }
+ | primary_value '.' tCONSTANT tOP_ASGN arg
+ {
+ /*%%%*/
+ value_expr($5);
+ if ($4 == tOROP) {
+ $4 = 0;
+ }
+ else if ($4 == tANDOP) {
+ $4 = 1;
+ }
+ $$ = NEW_OP_ASGN2($1, $3, $4, $5);
+ fixpos($$, $1);
+ /*%
+ $1 = dispatch3(field, $1, ripper_id2sym('.'), $3);
+ $$ = dispatch3(opassign, $1, $4, $5);
+ %*/
+ }
+ | primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg
+ {
+ /*%%%*/
+ value_expr($5);
+ if ($4 == tOROP) {
+ $4 = 0;
+ }
+ else if ($4 == tANDOP) {
+ $4 = 1;
+ }
+ $$ = NEW_OP_ASGN2($1, $3, $4, $5);
+ fixpos($$, $1);
+ /*%
+ $1 = dispatch3(field, $1, ripper_intern("::"), $3);
+ $$ = dispatch3(opassign, $1, $4, $5);
+ %*/
+ }
+ | primary_value tCOLON2 tCONSTANT tOP_ASGN arg
+ {
+ /*%%%*/
+ yyerror("constant re-assignment");
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch2(const_path_field, $1, $3);
+ $$ = dispatch3(opassign, $$, $4, $5);
+ $$ = dispatch1(assign_error, $$);
+ %*/
+ }
+ | tCOLON3 tCONSTANT tOP_ASGN arg
+ {
+ /*%%%*/
+ yyerror("constant re-assignment");
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch1(top_const_field, $2);
+ $$ = dispatch3(opassign, $$, $3, $4);
+ $$ = dispatch1(assign_error, $$);
+ %*/
+ }
+ | backref tOP_ASGN arg
+ {
+ /*%%%*/
+ rb_backref_error($1);
+ $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch1(var_field, $1);
+ $$ = dispatch3(opassign, $$, $2, $3);
+ $$ = dispatch1(assign_error, $$);
+ %*/
+ }
+ | arg tDOT2 arg
+ {
+ /*%%%*/
+ value_expr($1);
+ value_expr($3);
+ $$ = NEW_DOT2($1, $3);
+ if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
+ nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
+ deferred_nodes = list_append(deferred_nodes, $$);
+ }
+ /*%
+ $$ = dispatch2(dot2, $1, $3);
+ %*/
+ }
+ | arg tDOT3 arg
+ {
+ /*%%%*/
+ value_expr($1);
+ value_expr($3);
+ $$ = NEW_DOT3($1, $3);
+ if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
+ nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
+ deferred_nodes = list_append(deferred_nodes, $$);
+ }
+ /*%
+ $$ = dispatch2(dot3, $1, $3);
+ %*/
+ }
+ | arg '+' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '+', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('+'), $3);
+ %*/
+ }
+ | arg '-' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '-', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('-'), $3);
+ %*/
+ }
+ | arg '*' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '*', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('*'), $3);
+ %*/
+ }
+ | arg '/' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '/', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('/'), $3);
+ %*/
+ }
+ | arg '%' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '%', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('%'), $3);
+ %*/
+ }
+ | arg tPOW arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tPOW, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("**"), $3);
+ %*/
+ }
+ | tUMINUS_NUM tINTEGER tPOW arg
+ {
+ /*%%%*/
+ $$ = NEW_CALL(call_bin_op($2, tPOW, $4), tUMINUS, 0);
+ /*%
+ $$ = dispatch3(binary, $2, ripper_intern("**"), $4);
+ $$ = dispatch2(unary, ripper_intern("-@"), $$);
+ %*/
+ }
+ | tUMINUS_NUM tFLOAT tPOW arg
+ {
+ /*%%%*/
+ $$ = NEW_CALL(call_bin_op($2, tPOW, $4), tUMINUS, 0);
+ /*%
+ $$ = dispatch3(binary, $2, ripper_intern("**"), $4);
+ $$ = dispatch2(unary, ripper_intern("-@"), $$);
+ %*/
+ }
+ | tUPLUS arg
+ {
+ /*%%%*/
+ $$ = call_uni_op($2, tUPLUS);
+ /*%
+ $$ = dispatch2(unary, ripper_intern("+@"), $2);
+ %*/
+ }
+ | tUMINUS arg
+ {
+ /*%%%*/
+ $$ = call_uni_op($2, tUMINUS);
+ /*%
+ $$ = dispatch2(unary, ripper_intern("-@"), $2);
+ %*/
+ }
+ | arg '|' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '|', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('|'), $3);
+ %*/
+ }
+ | arg '^' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '^', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('^'), $3);
+ %*/
+ }
+ | arg '&' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '&', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('&'), $3);
+ %*/
+ }
+ | arg tCMP arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tCMP, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("<=>"), $3);
+ %*/
+ }
+ | arg '>' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '>', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('>'), $3);
+ %*/
+ }
+ | arg tGEQ arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tGEQ, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern(">="), $3);
+ %*/
+ }
+ | arg '<' arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, '<', $3);
+ /*%
+ $$ = dispatch3(binary, $1, ID2SYM('<'), $3);
+ %*/
+ }
+ | arg tLEQ arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tLEQ, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("<="), $3);
+ %*/
+ }
+ | arg tEQ arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tEQ, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("=="), $3);
+ %*/
+ }
+ | arg tEQQ arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tEQQ, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("==="), $3);
+ %*/
+ }
+ | arg tNEQ arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tNEQ, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("!="), $3);
+ %*/
+ }
+ | arg tMATCH arg
+ {
+ /*%%%*/
+ $$ = match_op($1, $3);
+ if (nd_type($1) == NODE_LIT && TYPE($1->nd_lit) == T_REGEXP) {
+ $$ = reg_named_capture_assign($1->nd_lit, $$);
+ }
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("=~"), $3);
+ %*/
+ }
+ | arg tNMATCH arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tNMATCH, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("!~"), $3);
+ %*/
+ }
+ | '!' arg
+ {
+ /*%%%*/
+ $$ = call_uni_op(cond($2), '!');
+ /*%
+ $$ = dispatch2(unary, ID2SYM('!'), $2);
+ %*/
+ }
+ | '~' arg
+ {
+ /*%%%*/
+ $$ = call_uni_op($2, '~');
+ /*%
+ $$ = dispatch2(unary, ID2SYM('~'), $2);
+ %*/
+ }
+ | arg tLSHFT arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tLSHFT, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("<<"), $3);
+ %*/
+ }
+ | arg tRSHFT arg
+ {
+ /*%%%*/
+ $$ = call_bin_op($1, tRSHFT, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern(">>"), $3);
+ %*/
+ }
+ | arg tANDOP arg
+ {
+ /*%%%*/
+ $$ = logop(NODE_AND, $1, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("&&"), $3);
+ %*/
+ }
+ | arg tOROP arg
+ {
+ /*%%%*/
+ $$ = logop(NODE_OR, $1, $3);
+ /*%
+ $$ = dispatch3(binary, $1, ripper_intern("||"), $3);
+ %*/
+ }
+ | keyword_defined opt_nl {in_defined = 1;} arg
+ {
+ /*%%%*/
+ in_defined = 0;
+ $$ = NEW_DEFINED($4);
+ /*%
+ in_defined = 0;
+ $$ = dispatch1(defined, $4);
+ %*/
+ }
+ | arg '?' arg opt_nl ':' arg
+ {
+ /*%%%*/
+ value_expr($1);
+ $$ = NEW_IF(cond($1), $3, $6);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(ifop, $1, $3, $6);
+ %*/
+ }
+ | primary
+ {
+ $$ = $1;
+ }
+ ;
+
+arg_value : arg
+ {
+ /*%%%*/
+ value_expr($1);
+ $$ = $1;
+ if (!$$) $$ = NEW_NIL();
+ /*%
+ $$ = $1;
+ %*/
+ }
+ ;
+
+aref_args : none
+ | args trailer
+ {
+ $$ = $1;
+ }
+ | args ',' assocs trailer
+ {
+ /*%%%*/
+ $$ = arg_append($1, NEW_HASH($3));
+ /*%
+ $$ = arg_add_assocs($1, $3);
+ %*/
+ }
+ | assocs trailer
+ {
+ /*%%%*/
+ $$ = NEW_LIST(NEW_HASH($1));
+ /*%
+ $$ = arg_add_assocs(arg_new(), $1);
+ %*/
+ }
+ ;
+
+paren_args : '(' opt_call_args rparen
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(arg_paren, escape_Qundef($2));
+ %*/
+ }
+ ;
+
+opt_paren_args : none
+ | paren_args
+ ;
+
+opt_call_args : none
+ | call_args
+ ;
+
+call_args : command
+ {
+ /*%%%*/
+ $$ = NEW_LIST($1);
+ /*%
+ $$ = arg_add(arg_new(), $1);
+ %*/
+ }
+ | args opt_block_arg
+ {
+ /*%%%*/
+ $$ = arg_blk_pass($1, $2);
+ /*%
+ $$ = arg_add_optblock($1, $2);
+ %*/
+ }
+ | assocs opt_block_arg
+ {
+ /*%%%*/
+ $$ = NEW_LIST(NEW_HASH($1));
+ $$ = arg_blk_pass($$, $2);
+ /*%
+ $$ = arg_add_assocs(arg_new(), $1);
+ $$ = arg_add_optblock($$, $2);
+ %*/
+ }
+ | args ',' assocs opt_block_arg
+ {
+ /*%%%*/
+ $$ = arg_append($1, NEW_HASH($3));
+ $$ = arg_blk_pass($$, $4);
+ /*%
+ $$ = arg_add_optblock(arg_add_assocs($1, $3), $4);
+ %*/
+ }
+ | block_arg
+ /*%c%*/
+ /*%c
+ {
+ $$ = arg_add_block(arg_new(), $1);
+ }
+ %*/
+ ;
+
+command_args : {
+ $<num>$ = cmdarg_stack;
+ CMDARG_PUSH(1);
+ }
+ call_args
+ {
+ /* CMDARG_POP() */
+ cmdarg_stack = $<num>1;
+ $$ = $2;
+ }
+ ;
+
+block_arg : tAMPER arg_value
+ {
+ /*%%%*/
+ $$ = NEW_BLOCK_PASS($2);
+ /*%
+ $$ = $2;
+ %*/
+ }
+ ;
+
+opt_block_arg : ',' block_arg
+ {
+ $$ = $2;
+ }
+ | none
+ {
+ $$ = 0;
+ }
+ ;
+
+args : arg_value
+ {
+ /*%%%*/
+ $$ = NEW_LIST($1);
+ /*%
+ $$ = arg_add(arg_new(), $1);
+ %*/
+ }
+ | tSTAR arg_value
+ {
+ /*%%%*/
+ $$ = NEW_SPLAT($2);
+ /*%
+ $$ = arg_add_star(arg_new(), $2);
+ %*/
+ }
+ | args ',' arg_value
+ {
+ /*%%%*/
+ NODE *n1;
+ if ((n1 = splat_array($1)) != 0) {
+ $$ = list_append(n1, $3);
+ }
+ else {
+ $$ = arg_append($1, $3);
+ }
+ /*%
+ $$ = 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);
+ }
+ /*%
+ $$ = arg_add_star($1, $4);
+ %*/
+ }
+ ;
+
+mrhs : args ',' arg_value
+ {
+ /*%%%*/
+ NODE *n1;
+ if ((n1 = splat_array($1)) != 0) {
+ $$ = list_append(n1, $3);
+ }
+ else {
+ $$ = arg_append($1, $3);
+ }
+ /*%
+ $$ = 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);
+ }
+ /*%
+ $$ = mrhs_add_star(args2mrhs($1), $4);
+ %*/
+ }
+ | tSTAR arg_value
+ {
+ /*%%%*/
+ $$ = NEW_SPLAT($2);
+ /*%
+ $$ = mrhs_add_star(mrhs_new(), $2);
+ %*/
+ }
+ ;
+
+primary : literal
+ | strings
+ | xstring
+ | regexp
+ | words
+ | qwords
+ | var_ref
+ | backref
+ | tFID
+ {
+ /*%%%*/
+ $$ = NEW_FCALL($1, 0);
+ /*%
+ $$ = method_arg(dispatch1(fcall, $1), arg_new());
+ %*/
+ }
+ | keyword_begin
+ {
+ /*%%%*/
+ $<num>$ = ruby_sourceline;
+ /*%
+ %*/
+ }
+ bodystmt
+ keyword_end
+ {
+ /*%%%*/
+ if ($3 == NULL) {
+ $$ = NEW_NIL();
+ }
+ else {
+ if (nd_type($3) == NODE_RESCUE ||
+ nd_type($3) == NODE_ENSURE)
+ nd_set_line($3, $<num>2);
+ $$ = NEW_BEGIN($3);
+ }
+ nd_set_line($$, $<num>2);
+ /*%
+ $$ = dispatch1(begin, $3);
+ %*/
+ }
+ | tLPAREN_ARG expr {lex_state = EXPR_ENDARG;} rparen
+ {
+ rb_warning0("(...) interpreted as grouped expression");
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(paren, $2);
+ %*/
+ }
+ | tLPAREN compstmt ')'
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(paren, $2);
+ %*/
+ }
+ | primary_value tCOLON2 tCONSTANT
+ {
+ /*%%%*/
+ $$ = NEW_COLON2($1, $3);
+ /*%
+ $$ = dispatch2(const_path_ref, $1, $3);
+ %*/
+ }
+ | tCOLON3 tCONSTANT
+ {
+ /*%%%*/
+ $$ = NEW_COLON3($2);
+ /*%
+ $$ = dispatch1(top_const_ref, $2);
+ %*/
+ }
+ | tLBRACK aref_args ']'
+ {
+ /*%%%*/
+ if ($2 == 0) {
+ $$ = NEW_ZARRAY(); /* zero length array*/
+ }
+ else {
+ $$ = $2;
+ }
+ /*%
+ $$ = dispatch1(array, escape_Qundef($2));
+ %*/
+ }
+ | tLBRACE assoc_list '}'
+ {
+ /*%%%*/
+ $$ = NEW_HASH($2);
+ /*%
+ $$ = dispatch1(hash, escape_Qundef($2));
+ %*/
+ }
+ | keyword_return
+ {
+ /*%%%*/
+ $$ = NEW_RETURN(0);
+ /*%
+ $$ = dispatch0(return0);
+ %*/
+ }
+ | keyword_yield '(' call_args rparen
+ {
+ /*%%%*/
+ $$ = new_yield($3);
+ /*%
+ $$ = dispatch1(yield, dispatch1(paren, $3));
+ %*/
+ }
+ | keyword_yield '(' rparen
+ {
+ /*%%%*/
+ $$ = NEW_YIELD(0, Qfalse);
+ /*%
+ $$ = dispatch1(yield, dispatch1(paren, arg_new()));
+ %*/
+ }
+ | keyword_yield
+ {
+ /*%%%*/
+ $$ = NEW_YIELD(0, Qfalse);
+ /*%
+ $$ = dispatch0(yield0);
+ %*/
+ }
+ | keyword_defined opt_nl '(' {in_defined = 1;} expr rparen
+ {
+ /*%%%*/
+ in_defined = 0;
+ $$ = NEW_DEFINED($5);
+ /*%
+ in_defined = 0;
+ $$ = dispatch1(defined, $5);
+ %*/
+ }
+ | keyword_not '(' expr rparen
+ {
+ /*%%%*/
+ $$ = call_uni_op(cond($3), '!');
+ /*%
+ $$ = dispatch2(unary, ripper_intern("not"), $3);
+ %*/
+ }
+ | keyword_not '(' rparen
+ {
+ /*%%%*/
+ $$ = call_uni_op(cond(NEW_NIL()), '!');
+ /*%
+ $$ = dispatch2(unary, ripper_intern("not"), Qnil);
+ %*/
+ }
+ | operation brace_block
+ {
+ /*%%%*/
+ $2->nd_iter = NEW_FCALL($1, 0);
+ $$ = $2;
+ fixpos($2->nd_iter, $2);
+ /*%
+ $$ = 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;
+ $$ = $2;
+ fixpos($$, $1);
+ /*%
+ $$ = method_add_block($1, $2);
+ %*/
+ }
+ | tLAMBDA lambda
+ {
+ $$ = $2;
+ }
+ | keyword_if expr_value then
+ compstmt
+ if_tail
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_IF(cond($2), $4, $5);
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch3(if, $2, $4, escape_Qundef($5));
+ %*/
+ }
+ | keyword_unless expr_value then
+ compstmt
+ opt_else
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_UNLESS(cond($2), $4, $5);
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch3(unless, $2, $4, escape_Qundef($5));
+ %*/
+ }
+ | keyword_while {COND_PUSH(1);} expr_value do {COND_POP();}
+ compstmt
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_WHILE(cond($3), $6, 1);
+ fixpos($$, $3);
+ /*%
+ $$ = dispatch2(while, $3, $6);
+ %*/
+ }
+ | keyword_until {COND_PUSH(1);} expr_value do {COND_POP();}
+ compstmt
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_UNTIL(cond($3), $6, 1);
+ fixpos($$, $3);
+ /*%
+ $$ = dispatch2(until, $3, $6);
+ %*/
+ }
+ | keyword_case expr_value opt_terms
+ case_body
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_CASE($2, $4);
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch2(case, $2, $4);
+ %*/
+ }
+ | keyword_case opt_terms case_body keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_CASE(0, $3);
+ /*%
+ $$ = dispatch2(case, Qnil, $3);
+ %*/
+ }
+ | keyword_for for_var keyword_in
+ {COND_PUSH(1);}
+ expr_value do
+ {COND_POP();}
+ compstmt
+ keyword_end
+ {
+ /*%%%*/
+ /*
+ * for a, b, c in e
+ * #=>
+ * e.each{|*x| a, b, c = x
+ *
+ * for a in e
+ * #=>
+ * e.each{|x| a, = x}
+ */
+ ID id = internal_id();
+ ID *tbl = ALLOC_N(ID, 2);
+ NODE *m = NEW_ARGS_AUX(0, 0);
+ NODE *args, *scope;
+
+ if (nd_type($2) == NODE_MASGN) {
+ /* if args.length == 1 && args[0].kind_of?(Array)
+ * args = args[0]
+ * end
+ */
+ NODE *one = NEW_LIST(NEW_LIT(INT2FIX(1)));
+ NODE *zero = NEW_LIST(NEW_LIT(INT2FIX(0)));
+ m->nd_next = block_append(
+ NEW_IF(
+ NEW_NODE(NODE_AND,
+ NEW_CALL(NEW_CALL(NEW_DVAR(id), rb_intern("length"), 0),
+ rb_intern("=="), one),
+ NEW_CALL(NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero),
+ rb_intern("kind_of?"), NEW_LIST(NEW_LIT(rb_cArray))),
+ 0),
+ NEW_DASGN_CURR(id,
+ NEW_CALL(NEW_DVAR(id), rb_intern("[]"), zero)),
+ 0),
+ node_assign($2, NEW_DVAR(id)));
+ }
+ else {
+ m->nd_next = node_assign(NEW_MASGN(NEW_LIST($2), 0), NEW_DVAR(id));
+ }
+
+ args = new_args(m, 0, id, 0, 0);
+ scope = NEW_NODE(NODE_SCOPE, tbl, $8, args);
+ tbl[0] = 1; tbl[1] = id;
+ $$ = NEW_FOR(0, $5, scope);
+ fixpos($$, $2);
+ /*%
+ $$ = dispatch3(for, $2, $5, $8);
+ %*/
+ }
+ | keyword_class cpath superclass
+ {
+ if (in_def || in_single)
+ yyerror("class definition in method body");
+ /*%%%*/
+ local_push(0);
+ $<num>$ = ruby_sourceline;
+ /*%
+ %*/
+ }
+ bodystmt
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_CLASS($2, $5, $3);
+ nd_set_line($$, $<num>4);
+ local_pop();
+ /*%
+ $$ = dispatch3(class, $2, $3, $5);
+ %*/
+ }
+ | keyword_class tLSHFT expr
+ {
+ /*%%%*/
+ $<num>$ = in_def;
+ in_def = 0;
+ /*%
+ in_def = 0;
+ %*/
+ }
+ term
+ {
+ /*%%%*/
+ $<num>$ = in_single;
+ in_single = 0;
+ local_push(0);
+ /*%
+ $$ = in_single;
+ in_single = 0;
+ %*/
+ }
+ bodystmt
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_SCLASS($3, $7);
+ fixpos($$, $3);
+ local_pop();
+ in_def = $<num>4;
+ in_single = $<num>6;
+ /*%
+ $$ = dispatch2(sclass, $3, $7);
+ in_def = $<val>4;
+ in_single = $<val>6;
+ %*/
+ }
+ | keyword_module cpath
+ {
+ if (in_def || in_single)
+ yyerror("module definition in method body");
+ /*%%%*/
+ local_push(0);
+ $<num>$ = ruby_sourceline;
+ /*%
+ %*/
+ }
+ bodystmt
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_MODULE($2, $4);
+ nd_set_line($$, $<num>3);
+ local_pop();
+ /*%
+ $$ = dispatch2(module, $2, $4);
+ %*/
+ }
+ | keyword_def fname
+ {
+ $<id>$ = cur_mid;
+ cur_mid = $2;
+ in_def++;
+ /*%%%*/
+ local_push(0);
+ /*%
+ %*/
+ }
+ f_arglist
+ bodystmt
+ keyword_end
+ {
+ /*%%%*/
+ NODE *body = remove_begin($5);
+ reduce_nodes(&body);
+ $$ = NEW_DEFN($2, $4, body, NOEX_PRIVATE);
+ fixpos($$, $4);
+ local_pop();
+ in_def--;
+ cur_mid = $<id>3;
+ /*%
+ $$ = dispatch3(def, $2, $4, $5);
+ in_def--;
+ cur_mid = $<id>3;
+ %*/
+ }
+ | keyword_def singleton dot_or_colon {lex_state = EXPR_FNAME;} fname
+ {
+ in_single++;
+ lex_state = EXPR_END; /* force for args */
+ /*%%%*/
+ local_push(0);
+ /*%
+ %*/
+ }
+ f_arglist
+ bodystmt
+ keyword_end
+ {
+ /*%%%*/
+ NODE *body = remove_begin($8);
+ reduce_nodes(&body);
+ $$ = NEW_DEFS($2, $5, $7, body);
+ fixpos($$, $2);
+ local_pop();
+ in_single--;
+ /*%
+ $$ = dispatch5(defs, $2, $3, $5, $7, $8);
+ in_single--;
+ %*/
+ }
+ | keyword_break
+ {
+ /*%%%*/
+ $$ = NEW_BREAK(0);
+ /*%
+ $$ = dispatch1(break, arg_new());
+ %*/
+ }
+ | keyword_next
+ {
+ /*%%%*/
+ $$ = NEW_NEXT(0);
+ /*%
+ $$ = dispatch1(next, arg_new());
+ %*/
+ }
+ | keyword_redo
+ {
+ /*%%%*/
+ $$ = NEW_REDO();
+ /*%
+ $$ = dispatch0(redo);
+ %*/
+ }
+ | keyword_retry
+ {
+ /*%%%*/
+ $$ = NEW_RETRY();
+ /*%
+ $$ = dispatch0(retry);
+ %*/
+ }
+ ;
+
+primary_value : primary
+ {
+ /*%%%*/
+ value_expr($1);
+ $$ = $1;
+ if (!$$) $$ = NEW_NIL();
+ /*%
+ $$ = $1;
+ %*/
+ }
+ ;
+
+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(cond($2), $4, $5);
+ 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
+ {
+ /*%%%*/
+ $$ = assignable($1, 0);
+ /*%
+ $$ = dispatch1(mlhs_paren, $1);
+ %*/
+ }
+ | tLPAREN f_margs rparen
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(mlhs_paren, $2);
+ %*/
+ }
+ ;
+
+f_marg_list : f_marg
+ {
+ /*%%%*/
+ $$ = NEW_LIST($1);
+ /*%
+ $$ = mlhs_add(mlhs_new(), $1);
+ %*/
+ }
+ | f_marg_list ',' f_marg
+ {
+ /*%%%*/
+ $$ = list_append($1, $3);
+ /*%
+ $$ = mlhs_add($1, $3);
+ %*/
+ }
+ ;
+
+f_margs : f_marg_list
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, 0);
+ /*%
+ $$ = $1;
+ %*/
+ }
+ | f_marg_list ',' tSTAR f_norm_arg
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, assignable($4, 0));
+ /*%
+ $$ = mlhs_add_star($1, $4);
+ %*/
+ }
+ | f_marg_list ',' tSTAR f_norm_arg ',' f_marg_list
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, NEW_POSTARG(assignable($4, 0), $6));
+ /*%
+ $$ = mlhs_add_star($1, $4);
+ %*/
+ }
+ | f_marg_list ',' tSTAR
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, -1);
+ /*%
+ $$ = mlhs_add_star($1, Qnil);
+ %*/
+ }
+ | f_marg_list ',' tSTAR ',' f_marg_list
+ {
+ /*%%%*/
+ $$ = NEW_MASGN($1, NEW_POSTARG(-1, $5));
+ /*%
+ $$ = mlhs_add_star($1, $5);
+ %*/
+ }
+ | tSTAR f_norm_arg
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, assignable($2, 0));
+ /*%
+ $$ = mlhs_add_star(mlhs_new(), $2);
+ %*/
+ }
+ | tSTAR f_norm_arg ',' f_marg_list
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, NEW_POSTARG(assignable($2, 0), $4));
+ /*%
+ #if 0
+ TODO: Check me
+ #endif
+ $$ = mlhs_add_star($2, $4);
+ %*/
+ }
+ | tSTAR
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, -1);
+ /*%
+ $$ = mlhs_add_star(mlhs_new(), Qnil);
+ %*/
+ }
+ | tSTAR ',' f_marg_list
+ {
+ /*%%%*/
+ $$ = NEW_MASGN(0, NEW_POSTARG(-1, $3));
+ /*%
+ $$ = mlhs_add_star(mlhs_new(), Qnil);
+ %*/
+ }
+ ;
+
+block_param : f_arg ',' f_rest_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, 0, $3, 0, $4);
+ /*%
+ $$ = params_new($1, Qnil, $3, Qnil, escape_Qundef($4));
+ %*/
+ }
+ | f_arg ','
+ {
+ /*%%%*/
+ $$ = new_args($1, 0, 1, 0, 0);
+ /*%
+ $$ = params_new($1, Qnil, Qnil, Qnil, Qnil);
+ dispatch1(excessed_comma, $$);
+ %*/
+ }
+ | f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, 0, $3, $5, $6);
+ /*%
+ $$ = params_new($1, Qnil, $3, $5, escape_Qundef($6));
+ %*/
+ }
+ | f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, 0, 0, 0, $2);
+ /*%
+ $$ = params_new($1, Qnil,Qnil, Qnil, escape_Qundef($2));
+ %*/
+ }
+ | f_rest_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, 0, $1, 0, $2);
+ /*%
+ $$ = params_new(Qnil, Qnil, $1, Qnil, escape_Qundef($2));
+ %*/
+ }
+ | f_rest_arg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, 0, $1, $3, $4);
+ /*%
+ $$ = params_new(Qnil, Qnil, $1, $3, escape_Qundef($4));
+ %*/
+ }
+ | f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, 0, 0, 0, $1);
+ /*%
+ $$ = params_new(Qnil, Qnil, Qnil, Qnil, $1);
+ %*/
+ }
+ ;
+
+opt_block_param : none
+ | block_param_def
+ {
+ command_start = Qtrue;
+ }
+ ;
+
+block_param_def : '|' opt_bv_decl '|'
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil),
+ escape_Qundef($2));
+ %*/
+ }
+ | tOROP
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = blockvar_new(params_new(Qnil,Qnil,Qnil,Qnil,Qnil),
+ Qnil);
+ %*/
+ }
+ | '|' block_param opt_bv_decl '|'
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = blockvar_new(escape_Qundef($2), escape_Qundef($3));
+ %*/
+ }
+ ;
+
+
+opt_bv_decl : none
+ | ';' bv_decls
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = $2;
+ %*/
+ }
+ ;
+
+bv_decls : bvar
+ /*%c%*/
+ /*%c
+ {
+ $$ = rb_ary_new2($1);
+ }
+ %*/
+ | bv_decls ',' bvar
+ /*%c%*/
+ /*%c
+ {
+ rb_ary_push($$, $3);
+ }
+ %*/
+ ;
+
+bvar : tIDENTIFIER
+ {
+ /*%%%*/
+ new_bv($1);
+ /*%
+ $$ = $1;
+ %*/
+ }
+ | f_bad_arg
+ {
+ $$ = 0;
+ }
+ ;
+
+lambda : {
+ /*%%%*/
+ dyna_push();
+ $<num>$ = lpar_beg;
+ lpar_beg = ++paren_nest;
+ /*%
+ %*/
+ }
+ f_larglist
+ lambda_body
+ {
+ /*%%%*/
+ $$ = $2;
+ $$->nd_body = NEW_SCOPE($2->nd_head, $3);
+ dyna_pop();
+ lpar_beg = $<num>1;
+ /*%
+ $$ = dispatch2(lambda, $2, $3);
+ %*/
+ }
+ ;
+
+f_larglist : '(' f_args opt_bv_decl rparen
+ {
+ /*%%%*/
+ $$ = NEW_LAMBDA($2);
+ /*%
+ $$ = dispatch1(paren, $2);
+ %*/
+ }
+ | f_args opt_bv_decl
+ {
+ /*%%%*/
+ $$ = NEW_LAMBDA($1);
+ /*%
+ $$ = $1;
+ %*/
+ }
+ ;
+
+lambda_body : tLAMBEG compstmt '}'
+ {
+ $$ = $2;
+ }
+ | keyword_do_LAMBDA compstmt keyword_end
+ {
+ $$ = $2;
+ }
+ ;
+
+do_block : keyword_do_block
+ {
+ /*%%%*/
+ dyna_push();
+ $<num>$ = ruby_sourceline;
+ /*% %*/
+ }
+ opt_block_param
+ compstmt
+ keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_ITER($3,$4);
+ nd_set_line($$, $<num>2);
+ dyna_pop();
+ /*%
+ $$ = dispatch2(do_block, escape_Qundef($3), $4);
+ %*/
+ }
+ ;
+
+block_call : command do_block
+ {
+ /*%%%*/
+ block_dup_check($1->nd_args, $2);
+ $2->nd_iter = $1;
+ $$ = $2;
+ fixpos($$, $1);
+ /*%
+ $$ = method_add_block($1, $2);
+ %*/
+ }
+ | block_call '.' operation2 opt_paren_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ /*%
+ $$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
+ $$ = method_optarg($$, $4);
+ %*/
+ }
+ | block_call tCOLON2 operation2 opt_paren_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ /*%
+ $$ = dispatch3(call, $1, ripper_intern("::"), $3);
+ $$ = method_optarg($$, $4);
+ %*/
+ }
+ ;
+
+method_call : operation paren_args
+ {
+ /*%%%*/
+ $$ = NEW_FCALL($1, $2);
+ fixpos($$, $2);
+ /*%
+ $$ = method_arg(dispatch1(fcall, $1), $2);
+ %*/
+ }
+ | primary_value '.' operation2 opt_paren_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
+ $$ = method_optarg($$, $4);
+ %*/
+ }
+ | primary_value tCOLON2 operation2 paren_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, $4);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(call, $1, ripper_id2sym('.'), $3);
+ $$ = method_optarg($$, $4);
+ %*/
+ }
+ | primary_value tCOLON2 operation3
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, $3, 0);
+ /*%
+ $$ = dispatch3(call, $1, ripper_intern("::"), $3);
+ %*/
+ }
+ | primary_value '.' paren_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, rb_intern("call"), $3);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(call, dispatch1(paren, $1),
+ ripper_id2sym('.'), rb_intern("call"));
+ $$ = method_optarg($$, $3);
+ %*/
+ }
+ | primary_value tCOLON2 paren_args
+ {
+ /*%%%*/
+ $$ = NEW_CALL($1, rb_intern("call"), $3);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch3(call, dispatch1(paren, $1),
+ ripper_id2sym('.'), rb_intern("call"));
+ $$ = method_optarg($$, $3);
+ %*/
+ }
+ | keyword_super paren_args
+ {
+ /*%%%*/
+ $$ = NEW_SUPER($2);
+ /*%
+ $$ = dispatch1(super, $2);
+ %*/
+ }
+ | keyword_super
+ {
+ /*%%%*/
+ $$ = NEW_ZSUPER();
+ /*%
+ $$ = dispatch0(zsuper);
+ %*/
+ }
+ | primary_value '[' opt_call_args rbracket
+ {
+ /*%%%*/
+ if ($1 && nd_type($1) == NODE_SELF)
+ $$ = NEW_FCALL(tAREF, $3);
+ else
+ $$ = NEW_CALL($1, tAREF, $3);
+ fixpos($$, $1);
+ /*%
+ $$ = dispatch2(aref, $1, escape_Qundef($3));
+ %*/
+ }
+ ;
+
+brace_block : '{'
+ {
+ /*%%%*/
+ dyna_push();
+ $<num>$ = ruby_sourceline;
+ /*%
+ %*/
+ }
+ opt_block_param
+ compstmt '}'
+ {
+ /*%%%*/
+ $$ = NEW_ITER($3,$4);
+ nd_set_line($$, $<num>2);
+ dyna_pop();
+ /*%
+ $$ = dispatch2(brace_block, escape_Qundef($3), $4);
+ %*/
+ }
+ | keyword_do
+ {
+ /*%%%*/
+ dyna_push();
+ $<num>$ = ruby_sourceline;
+ /*%
+ %*/
+ }
+ opt_block_param
+ compstmt keyword_end
+ {
+ /*%%%*/
+ $$ = NEW_ITER($3,$4);
+ nd_set_line($$, $<num>2);
+ dyna_pop();
+ /*%
+ $$ = dispatch2(do_block, escape_Qundef($3), $4);
+ %*/
+ }
+ ;
+
+case_body : keyword_when args then
+ compstmt
+ cases
+ {
+ /*%%%*/
+ $$ = NEW_WHEN($2, $4, $5);
+ /*%
+ $$ = dispatch3(when, $2, $4, escape_Qundef($5));
+ %*/
+ }
+ ;
+
+cases : opt_else
+ | case_body
+ ;
+
+opt_rescue : keyword_rescue exc_list exc_var then
+ compstmt
+ opt_rescue
+ {
+ /*%%%*/
+ if ($3) {
+ $3 = node_assign($3, NEW_ERRINFO());
+ $5 = block_append($3, $5);
+ }
+ $$ = NEW_RESBODY($2, $5, $6);
+ fixpos($$, $2?$2:$5);
+ /*%
+ $$ = dispatch4(rescue,
+ escape_Qundef($2),
+ escape_Qundef($3),
+ escape_Qundef($5),
+ escape_Qundef($6));
+ %*/
+ }
+ | none
+ ;
+
+exc_list : arg_value
+ {
+ /*%%%*/
+ $$ = NEW_LIST($1);
+ /*%
+ $$ = rb_ary_new3(1, $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
+ {
+ /*%%%*/
+ $$ = NEW_LIT(ID2SYM($1));
+ /*%
+ $$ = dispatch1(symbol_literal, $1);
+ %*/
+ }
+ | dsym
+ ;
+
+strings : string
+ {
+ /*%%%*/
+ NODE *node = $1;
+ if (!node) {
+ node = NEW_STR(STR_NEW0());
+ }
+ else {
+ node = evstr2dstr(node);
+ }
+ $$ = node;
+ /*%
+ $$ = $1;
+ %*/
+ }
+ ;
+
+string : tCHAR
+ | string1
+ | string string1
+ {
+ /*%%%*/
+ $$ = literal_concat($1, $2);
+ /*%
+ $$ = dispatch2(string_concat, $1, $2);
+ %*/
+ }
+ ;
+
+string1 : tSTRING_BEG string_contents tSTRING_END
+ {
+ /*%%%*/
+ $$ = $2;
+ /*%
+ $$ = dispatch1(string_literal, $2);
+ %*/
+ }
+ ;
+
+xstring : tXSTRING_BEG xstring_contents tSTRING_END
+ {
+ /*%%%*/
+ NODE *node = $2;
+ if (!node) {
+ node = NEW_XSTR(STR_NEW0());
+ }
+ else {
+ 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, STR_NEW0(), 1, NEW_LIST(node));
+ break;
+ }
+ }
+ $$ = node;
+ /*%
+ $$ = dispatch1(xstring_literal, $2);
+ %*/
+ }
+ ;
+
+regexp : tREGEXP_BEG xstring_contents tREGEXP_END
+ {
+ /*%%%*/
+ int options = $3;
+ NODE *node = $2;
+ NODE *list;
+ if (!node) {
+ node = NEW_LIT(reg_compile(STR_NEW0(), options));
+ }
+ else switch (nd_type(node)) {
+ case NODE_STR:
+ {
+ VALUE src = node->nd_lit;
+ nd_set_type(node, NODE_LIT);
+ node->nd_lit = reg_compile(src, options);
+ }
+ break;
+ default:
+ node = NEW_NODE(NODE_DSTR, STR_NEW0(), 1, NEW_LIST(node));
+ case NODE_DSTR:
+ if (options & RE_OPTION_ONCE) {
+ nd_set_type(node, NODE_DREGX_ONCE);
+ }
+ else {
+ nd_set_type(node, NODE_DREGX);
+ }
+ node->nd_cflag = options & RE_OPTION_MASK;
+ reg_fragment_check(node->nd_lit, options);
+ for (list = node->nd_next; list; list = list->nd_next) {
+ if (nd_type(list->nd_head) == NODE_STR) {
+ reg_fragment_check(list->nd_head->nd_lit, options);
+ }
+ }
+ break;
+ }
+ $$ = node;
+ /*%
+ $$ = dispatch2(regexp_literal, $2, $3);
+ %*/
+ }
+ ;
+
+words : tWORDS_BEG ' ' tSTRING_END
+ {
+ /*%%%*/
+ $$ = NEW_ZARRAY();
+ /*%
+ $$ = dispatch0(words_new);
+ %*/
+ }
+ | tWORDS_BEG word_list tSTRING_END
+ {
+ $$ = $2;
+ }
+ ;
+
+word_list : /* none */
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = dispatch0(words_new);
+ %*/
+ }
+ | word_list word ' '
+ {
+ /*%%%*/
+ $$ = list_append($1, evstr2dstr($2));
+ /*%
+ $$ = dispatch2(words_add, $1, $2);
+ %*/
+ }
+ ;
+
+word : string_content
+ /*%c%*/
+ /*%c
+ {
+ $$ = dispatch0(word_new);
+ $$ = dispatch2(word_add, $$, $1);
+ }
+ %*/
+ | word string_content
+ {
+ /*%%%*/
+ $$ = literal_concat($1, $2);
+ /*%
+ $$ = dispatch2(word_add, $1, $2);
+ %*/
+ }
+ ;
+
+qwords : tQWORDS_BEG ' ' tSTRING_END
+ {
+ /*%%%*/
+ $$ = NEW_ZARRAY();
+ /*%
+ $$ = dispatch0(qwords_new);
+ %*/
+ }
+ | tQWORDS_BEG qword_list tSTRING_END
+ {
+ $$ = $2;
+ }
+ ;
+
+qword_list : /* none */
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = dispatch0(qwords_new);
+ %*/
+ }
+ | qword_list tSTRING_CONTENT ' '
+ {
+ /*%%%*/
+ $$ = list_append($1, $2);
+ /*%
+ $$ = dispatch2(qwords_add, $1, $2);
+ %*/
+ }
+ ;
+
+string_contents : /* none */
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = dispatch0(string_content);
+ %*/
+ }
+ | string_contents string_content
+ {
+ /*%%%*/
+ $$ = literal_concat($1, $2);
+ /*%
+ $$ = dispatch2(string_add, $1, $2);
+ %*/
+ }
+ ;
+
+xstring_contents: /* none */
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = dispatch0(xstring_new);
+ %*/
+ }
+ | xstring_contents string_content
+ {
+ /*%%%*/
+ $$ = literal_concat($1, $2);
+ /*%
+ $$ = dispatch2(xstring_add, $1, $2);
+ %*/
+ }
+ ;
+
+string_content : tSTRING_CONTENT
+ | tSTRING_DVAR
+ {
+ $<node>$ = lex_strterm;
+ lex_strterm = 0;
+ lex_state = EXPR_BEG;
+ }
+ string_dvar
+ {
+ /*%%%*/
+ lex_strterm = $<node>2;
+ $$ = NEW_EVSTR($3);
+ /*%
+ lex_strterm = $<node>2;
+ $$ = dispatch1(string_dvar, $3);
+ %*/
+ }
+ | tSTRING_DBEG
+ {
+ $<node>$ = lex_strterm;
+ lex_strterm = 0;
+ lex_state = EXPR_BEG;
+ COND_PUSH(0);
+ CMDARG_PUSH(0);
+ }
+ compstmt '}'
+ {
+ lex_strterm = $<node>2;
+ COND_LEXPOP();
+ CMDARG_LEXPOP();
+ /*%%%*/
+ if ($3) $3->flags &= ~NODE_FL_NEWLINE;
+ $$ = new_evstr($3);
+ /*%
+ $$ = dispatch1(string_embexpr, $3);
+ %*/
+ }
+ ;
+
+string_dvar : tGVAR
+ {
+ /*%%%*/
+ $$ = NEW_GVAR($1);
+ /*%
+ $$ = dispatch1(var_ref, $1);
+ %*/
+ }
+ | tIVAR
+ {
+ /*%%%*/
+ $$ = NEW_IVAR($1);
+ /*%
+ $$ = dispatch1(var_ref, $1);
+ %*/
+ }
+ | tCVAR
+ {
+ /*%%%*/
+ $$ = NEW_CVAR($1);
+ /*%
+ $$ = dispatch1(var_ref, $1);
+ %*/
+ }
+ | backref
+ ;
+
+symbol : tSYMBEG sym
+ {
+ /*%%%*/
+ lex_state = EXPR_ENDARG;
+ $$ = $2;
+ /*%
+ lex_state = EXPR_ENDARG;
+ $$ = dispatch1(symbol, $2);
+ %*/
+ }
+ ;
+
+sym : fname
+ | tIVAR
+ | tGVAR
+ | tCVAR
+ ;
+
+dsym : tSYMBEG xstring_contents tSTRING_END
+ {
+ /*%%%*/
+ lex_state = EXPR_ENDARG;
+ if (!($$ = $2)) {
+ $$ = NEW_LIT(ID2SYM(rb_intern("")));
+ }
+ else {
+ VALUE lit;
+
+ switch (nd_type($$)) {
+ case NODE_DSTR:
+ nd_set_type($$, NODE_DSYM);
+ break;
+ case NODE_STR:
+ lit = $$->nd_lit;
+ $$->nd_lit = ID2SYM(rb_intern_str(lit));
+ nd_set_type($$, NODE_LIT);
+ break;
+ default:
+ $$ = NEW_NODE(NODE_DSYM, STR_NEW0(), 1, NEW_LIST($$));
+ break;
+ }
+ }
+ /*%
+ lex_state = EXPR_ENDARG;
+ $$ = dispatch1(dyna_symbol, $2);
+ %*/
+ }
+ ;
+
+numeric : tINTEGER
+ | tFLOAT
+ | tUMINUS_NUM tINTEGER %prec tLOWEST
+ {
+ /*%%%*/
+ $$ = negate_lit($2);
+ /*%
+ $$ = dispatch2(unary, ripper_intern("-@"), $2);
+ %*/
+ }
+ | tUMINUS_NUM tFLOAT %prec tLOWEST
+ {
+ /*%%%*/
+ $$ = negate_lit($2);
+ /*%
+ $$ = dispatch2(unary, ripper_intern("-@"), $2);
+ %*/
+ }
+ ;
+
+variable : tIDENTIFIER
+ | tIVAR
+ | tGVAR
+ | tCONSTANT
+ | tCVAR
+ | keyword_nil {ifndef_ripper($$ = keyword_nil);}
+ | keyword_self {ifndef_ripper($$ = keyword_self);}
+ | keyword_true {ifndef_ripper($$ = keyword_true);}
+ | keyword_false {ifndef_ripper($$ = keyword_false);}
+ | keyword__FILE__ {ifndef_ripper($$ = keyword__FILE__);}
+ | keyword__LINE__ {ifndef_ripper($$ = keyword__LINE__);}
+ | keyword__ENCODING__ {ifndef_ripper($$ = keyword__ENCODING__);}
+ ;
+
+var_ref : variable
+ {
+ /*%%%*/
+ if (!($$ = gettable($1))) $$ = NEW_BEGIN(0);
+ /*%
+ $$ = dispatch1(var_ref, $1);
+ %*/
+ }
+ ;
+
+var_lhs : variable
+ {
+ /*%%%*/
+ $$ = assignable($1, 0);
+ /*%
+ $$ = dispatch1(var_field, $1);
+ %*/
+ }
+ ;
+
+backref : tNTH_REF
+ | tBACK_REF
+ ;
+
+superclass : term
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = Qnil;
+ %*/
+ }
+ | '<'
+ {
+ lex_state = EXPR_BEG;
+ }
+ expr_value term
+ {
+ $$ = $3;
+ }
+ | error term
+ {
+ /*%%%*/
+ yyerrok;
+ $$ = 0;
+ /*%
+ yyerrok;
+ $$ = Qnil;
+ %*/
+ }
+ ;
+
+f_arglist : '(' f_args rparen
+ {
+ /*%%%*/
+ $$ = $2;
+ lex_state = EXPR_BEG;
+ command_start = Qtrue;
+ /*%
+ $$ = dispatch1(paren, $2);
+ lex_state = EXPR_BEG;
+ command_start = Qtrue;
+ %*/
+ }
+ | f_args term
+ {
+ $$ = $1;
+ }
+ ;
+
+f_args : f_arg ',' f_optarg ',' f_rest_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, $3, $5, 0, $6);
+ /*%
+ $$ = params_new($1, $3, $5, Qnil, escape_Qundef($6));
+ %*/
+ }
+ | f_arg ',' f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, $3, $5, $7, $8);
+ /*%
+ $$ = params_new($1, $3, $5, $7, escape_Qundef($8));
+ %*/
+ }
+ | f_arg ',' f_optarg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, $3, 0, 0, $4);
+ /*%
+ $$ = params_new($1, $3, Qnil, Qnil, escape_Qundef($4));
+ %*/
+ }
+ | f_arg ',' f_optarg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, $3, 0, $5, $6);
+ /*%
+ $$ = params_new($1, $3, Qnil, $5, escape_Qundef($6));
+ %*/
+ }
+ | f_arg ',' f_rest_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, 0, $3, 0, $4);
+ /*%
+ $$ = params_new($1, Qnil, $3, Qnil, escape_Qundef($4));
+ %*/
+ }
+ | f_arg ',' f_rest_arg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, 0, $3, $5, $6);
+ /*%
+ $$ = params_new($1, Qnil, $3, $5, escape_Qundef($6));
+ %*/
+ }
+ | f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args($1, 0, 0, 0, $2);
+ /*%
+ $$ = params_new($1, Qnil, Qnil, Qnil,escape_Qundef($2));
+ %*/
+ }
+ | f_optarg ',' f_rest_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, $1, $3, 0, $4);
+ /*%
+ $$ = params_new(Qnil, $1, $3, Qnil, escape_Qundef($4));
+ %*/
+ }
+ | f_optarg ',' f_rest_arg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, $1, $3, $5, $6);
+ /*%
+ $$ = params_new(Qnil, $1, $3, $5, escape_Qundef($6));
+ %*/
+ }
+ | f_optarg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, $1, 0, 0, $2);
+ /*%
+ $$ = params_new(Qnil, $1, Qnil, Qnil,escape_Qundef($2));
+ %*/
+ }
+ | f_optarg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, $1, 0, $3, $4);
+ /*%
+ $$ = params_new(Qnil, $1, Qnil, $3, escape_Qundef($4));
+ %*/
+ }
+ | f_rest_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, 0, $1, 0, $2);
+ /*%
+ $$ = params_new(Qnil, Qnil, $1, Qnil,escape_Qundef($2));
+ %*/
+ }
+ | f_rest_arg ',' f_arg opt_f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, 0, $1, $3, $4);
+ /*%
+ $$ = params_new(Qnil, Qnil, $1, $3, escape_Qundef($4));
+ %*/
+ }
+ | f_block_arg
+ {
+ /*%%%*/
+ $$ = new_args(0, 0, 0, 0, $1);
+ /*%
+ $$ = params_new(Qnil, Qnil, Qnil, Qnil, $1);
+ %*/
+ }
+ | /* none */
+ {
+ /*%%%*/
+ $$ = new_args(0, 0, 0, 0, 0);
+ /*%
+ $$ = params_new(Qnil, Qnil, Qnil, Qnil, Qnil);
+ %*/
+ }
+ ;
+
+f_bad_arg : tCONSTANT
+ {
+ /*%%%*/
+ yyerror("formal argument cannot be a constant");
+ $$ = 0;
+ /*%
+ $$ = dispatch1(param_error, $1);
+ %*/
+ }
+ | tIVAR
+ {
+ /*%%%*/
+ yyerror("formal argument cannot be an instance variable");
+ $$ = 0;
+ /*%
+ $$ = dispatch1(param_error, $1);
+ %*/
+ }
+ | tGVAR
+ {
+ /*%%%*/
+ yyerror("formal argument cannot be a global variable");
+ $$ = 0;
+ /*%
+ $$ = dispatch1(param_error, $1);
+ %*/
+ }
+ | tCVAR
+ {
+ /*%%%*/
+ yyerror("formal argument cannot be a class variable");
+ $$ = 0;
+ /*%
+ $$ = dispatch1(param_error, $1);
+ %*/
+ }
+ ;
+
+f_norm_arg : f_bad_arg
+ | tIDENTIFIER
+ {
+ /*%%%*/
+ if (!is_local_id($1))
+ yyerror("formal argument must be local variable");
+ shadowing_lvar($1);
+ /*%
+ %*/
+ $$ = $1;
+ }
+ ;
+
+f_arg_item : f_norm_arg
+ {
+ /*%%%*/
+ arg_var($1);
+ $$ = NEW_ARGS_AUX($1, 1);
+ /*%
+ %*/
+ }
+ | tLPAREN f_margs rparen
+ {
+ /*%%%*/
+ ID tid = internal_id();
+ arg_var(tid);
+ if (dyna_in_block()) {
+ $2->nd_value = NEW_DVAR(tid);
+ }
+ else {
+ $2->nd_value = NEW_LVAR(tid);
+ }
+ $$ = NEW_ARGS_AUX(tid, 1);
+ $$->nd_next = $2;
+ /*%
+ $$ = dispatch1(mlhs_paren, $2);
+ %*/
+ }
+ ;
+
+f_arg : f_arg_item
+ /*%c%*/
+ /*%c
+ {
+ $$ = rb_ary_new3(1, $1);
+ }
+ c%*/
+ | f_arg ',' f_arg_item
+ {
+ /*%%%*/
+ $$ = $1;
+ $$->nd_plen++;
+ $$->nd_next = block_append($$->nd_next, $3->nd_next);
+ rb_gc_force_recycle((VALUE)$3);
+ /*%
+ $$ = rb_ary_push($1, $3);
+ %*/
+ }
+ ;
+
+f_opt : tIDENTIFIER '=' arg_value
+ {
+ /*%%%*/
+ if (!is_local_id($1))
+ yyerror("formal argument must be local variable");
+ shadowing_lvar($1);
+ arg_var($1);
+ $$ = NEW_OPT_ARG(0, assignable($1, $3));
+ /*%
+ $$ = rb_assoc_new($1, $3);
+ %*/
+ }
+ ;
+
+f_optarg : f_opt
+ {
+ /*%%%*/
+ $$ = $1;
+ /*%
+ $$ = rb_ary_new3(1, $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, $3);
+ %*/
+ }
+ ;
+
+restarg_mark : '*'
+ | tSTAR
+ ;
+
+f_rest_arg : restarg_mark tIDENTIFIER
+ {
+ /*%%%*/
+ if (!is_local_id($2))
+ yyerror("rest argument must be local variable");
+ shadowing_lvar($2);
+ arg_var($2);
+ $$ = $2;
+ /*%
+ $$ = dispatch1(rest_param, $2);
+ %*/
+ }
+ | restarg_mark
+ {
+ /*%%%*/
+ $$ = internal_id();
+ arg_var($$);
+ /*%
+ $$ = dispatch1(rest_param, Qnil);
+ %*/
+ }
+ ;
+
+blkarg_mark : '&'
+ | tAMPER
+ ;
+
+f_block_arg : blkarg_mark tIDENTIFIER
+ {
+ /*%%%*/
+ if (!is_local_id($2))
+ yyerror("block argument must be local variable");
+ else if (!dyna_in_block() && local_id($2))
+ yyerror("duplicated block argument name");
+ shadowing_lvar($2);
+ arg_var($2);
+ $$ = $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;
+ %*/
+ }
+ | '(' {lex_state = EXPR_BEG;} expr rparen
+ {
+ /*%%%*/
+ if ($3 == 0) {
+ yyerror("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:
+ yyerror("can't define singleton method for literals");
+ default:
+ value_expr($3);
+ break;
+ }
+ }
+ $$ = $3;
+ /*%
+ $$ = dispatch1(paren, $3);
+ %*/
+ }
+ ;
+
+assoc_list : none
+ | assocs trailer
+ {
+ /*%%%*/
+ $$ = $1;
+ /*%
+ $$ = dispatch1(assoclist_from_args, $1);
+ %*/
+ }
+ ;
+
+assocs : assoc
+ /*%c%*/
+ /*%c
+ {
+ $$ = rb_ary_new3(1, $1);
+ }
+ %*/
+ | assocs ',' assoc
+ {
+ /*%%%*/
+ $$ = list_concat($1, $3);
+ /*%
+ $$ = rb_ary_push($1, $3);
+ %*/
+ }
+ ;
+
+assoc : arg_value tASSOC arg_value
+ {
+ /*%%%*/
+ $$ = list_append(NEW_LIST($1), $3);
+ /*%
+ $$ = dispatch2(assoc_new, $1, $3);
+ %*/
+ }
+ | tLABEL arg_value
+ {
+ /*%%%*/
+ $$ = list_append(NEW_LIST(NEW_LIT(ID2SYM($1))), $2);
+ /*%
+ $$ = dispatch2(assoc_new, $1, $2);
+ %*/
+ }
+ ;
+
+operation : tIDENTIFIER
+ | tCONSTANT
+ | tFID
+ ;
+
+operation2 : tIDENTIFIER
+ | tCONSTANT
+ | tFID
+ | op
+ ;
+
+operation3 : tIDENTIFIER
+ | tFID
+ | op
+ ;
+
+dot_or_colon : '.'
+ /*%c%*/
+ /*%c
+ { $$ = $<val>1; }
+ %*/
+ | tCOLON2
+ /*%c%*/
+ /*%c
+ { $$ = $<val>1; }
+ %*/
+ ;
+
+opt_terms : /* none */
+ | terms
+ ;
+
+opt_nl : /* none */
+ | '\n'
+ ;
+
+rparen : opt_nl ')'
+ ;
+
+rbracket : opt_nl ']'
+ ;
+
+trailer : /* none */
+ | '\n'
+ | ','
+ ;
+
+term : ';' {yyerrok;}
+ | '\n'
+ ;
+
+terms : term
+ | terms ';' {yyerrok;}
+ ;
+
+none : /* none */
+ {
+ /*%%%*/
+ $$ = 0;
+ /*%
+ $$ = Qundef;
+ %*/
+ }
+ ;
+%%
+# undef parser
+# undef yylex
+# undef yylval
+# define yylval (*((YYSTYPE*)(parser->parser_yylval)))
+
+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 int parser_parse_string(struct parser_params*,NODE*);
+static int parser_here_document(struct parser_params*,NODE*);
+
+
+# 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)
+
+#ifdef RIPPER
+/* FIXME */
+# define local_id(x) 1
+# define dyna_in_block() 1
+#endif /* RIPPER */
+
+#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_literal(x) yylval.node = NEW_LIT(x)
+# define set_yylval_node(x) yylval.node = x
+# define yylval_id() yylval.id
+#else
+# define set_yylval_str(x) (void)(x)
+# define set_yylval_num(x) (void)(x)
+# define set_yylval_id(x) (void)(x)
+# define set_yylval_literal(x) (void)(x)
+# define set_yylval_node(x) (void)(x)
+# define yylval_id() SYM2ID(yylval.val)
+#endif
+
+#ifdef RIPPER
+#define ripper_flush(p) (p->tokp = p->parser_lex_p)
+
+static void
+ripper_dispatch_scan_event(struct parser_params *parser, int t)
+{
+ VALUE str;
+
+ if (lex_p < parser->tokp) rb_raise(rb_eRuntimeError, "lex_p < tokp");
+ if (lex_p == parser->tokp) return;
+ str = STR_NEW(parser->tokp, lex_p - parser->tokp);
+ yylval.val = ripper_dispatch1(parser, ripper_token2eventid(t), str);
+ ripper_flush(parser);
+}
+
+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;
+ yylval.val = ripper_dispatch1(parser, ripper_token2eventid(t), parser->delayed);
+ parser->delayed = Qnil;
+ ruby_sourceline = saved_line;
+ parser->tokp = saved_tokp;
+}
+#endif /* RIPPER */
+
+#include "ruby/regex.h"
+#include "ruby/util.h"
+
+/* We remove any previous definition of `SIGN_EXTEND_CHAR',
+ since ours (we hope) works properly with all combinations of
+ machines, compilers, `char' and `unsigned char' argument types.
+ (Per Bothner suggested the basic approach.) */
+#undef SIGN_EXTEND_CHAR
+#if __STDC__
+# define SIGN_EXTEND_CHAR(c) ((signed char)(c))
+#else /* not __STDC__ */
+/* As in Harbison and Steele. */
+# define SIGN_EXTEND_CHAR(c) ((((unsigned char)(c)) ^ 128) - 128)
+#endif
+
+#define parser_mbclen() mbclen((lex_p-1),lex_pend,parser->enc)
+#define parser_precise_mbclen() rb_enc_precise_mbclen((lex_p-1),lex_pend,parser->enc)
+#define is_identchar(p,e,enc) (rb_enc_isalnum(*p,enc) || (*p) == '_' || !ISASCII(*p))
+#define parser_is_identchar() (!parser->eofp && is_identchar((lex_p-1),lex_pend,parser->enc))
+
+#define parser_isascii() ISASCII(*(lex_p-1))
+
+static int
+parser_yyerror(struct parser_params *parser, const char *msg)
+{
+#ifndef RIPPER
+ const int max_line_margin = 30;
+ const char *p, *pe;
+ char *buf;
+ int len, i;
+
+ compile_error(PARSER_ARG "%s", msg);
+ p = lex_p;
+ while (lex_pbeg <= p) {
+ if (*p == '\n') break;
+ p--;
+ }
+ p++;
+
+ pe = lex_p;
+ while (pe < lex_pend) {
+ if (*pe == '\n') break;
+ pe++;
+ }
+
+ len = pe - p;
+ if (len > 4) {
+ char *p2;
+ const char *pre = "", *post = "";
+
+ if (len > max_line_margin * 2 + 10) {
+ if (lex_p - p > max_line_margin) {
+ p = rb_enc_prev_char(p, lex_p - max_line_margin, rb_enc_get(lex_lastline));
+ pre = "...";
+ }
+ if (pe - lex_p > max_line_margin) {
+ pe = rb_enc_prev_char(lex_p, lex_p + max_line_margin, rb_enc_get(lex_lastline));
+ post = "...";
+ }
+ len = pe - p;
+ }
+ buf = ALLOCA_N(char, len+2);
+ MEMCPY(buf, p, char, len);
+ buf[len] = '\0';
+ rb_compile_error_append("%s%s%s", pre, buf, post);
+
+ i = lex_p - p;
+ p2 = buf; pe = buf + len;
+
+ while (p2 < pe) {
+ if (*p2 != '\t') *p2 = ' ';
+ p2++;
+ }
+ buf[i] = '^';
+ buf[i+1] = '\0';
+ rb_compile_error_append("%s%s", pre, buf);
+ }
+#else
+ dispatch1(parse_error, STR_NEW2(msg));
+#endif /* !RIPPER */
+ return 0;
+}
+
+static void parser_prepare(struct parser_params *parser);
+
+#ifndef RIPPER
+VALUE ruby_suppress_tracing(VALUE (*func)(VALUE, int), VALUE arg, int always);
+
+static VALUE
+debug_lines(const char *f)
+{
+ if (rb_const_defined_at(rb_cObject, rb_intern("SCRIPT_LINES__"))) {
+ VALUE hash = rb_const_get_at(rb_cObject, rb_intern("SCRIPT_LINES__"));
+ if (TYPE(hash) == T_HASH) {
+ VALUE fname = rb_str_new2(f);
+ VALUE lines = rb_ary_new();
+ rb_hash_aset(hash, fname, lines);
+ return lines;
+ }
+ }
+ return 0;
+}
+
+static VALUE
+coverage(const char *f, int n)
+{
+ extern VALUE rb_get_coverages(void);
+ VALUE coverages = rb_get_coverages();
+ if (RTEST(coverages) && RBASIC(coverages)->klass == 0) {
+ VALUE fname = rb_str_new2(f);
+ VALUE lines = rb_ary_new2(n);
+ int i;
+ RBASIC(lines)->klass = 0;
+ for (i = 0; i < n; i++) RARRAY_PTR(lines)[i] = Qnil;
+ RARRAY(lines)->len = n;
+ rb_hash_aset(coverages, fname, lines);
+ return lines;
+ }
+ return 0;
+}
+
+static int
+e_option_supplied(struct parser_params *parser)
+{
+ if (strcmp(ruby_sourcefile, "-e") == 0)
+ return Qtrue;
+ return Qfalse;
+}
+
+static VALUE
+yycompile0(VALUE arg, int tracing)
+{
+ int n;
+ NODE *tree;
+ struct parser_params *parser = (struct parser_params *)arg;
+
+ if (!compile_for_eval && rb_safe_level() == 0) {
+ ruby_debug_lines = debug_lines(ruby_sourcefile);
+ 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, ruby_sourceline);
+ }
+ }
+
+ parser_prepare(parser);
+ deferred_nodes = 0;
+ n = yyparse((void*)parser);
+ ruby_debug_lines = 0;
+ ruby_coverage = 0;
+ compile_for_eval = 0;
+
+ lex_strterm = 0;
+ lex_p = lex_pbeg = lex_pend = 0;
+ lex_lastline = lex_nextline = 0;
+ if (parser->nerr) {
+ return 0;
+ }
+ tree = ruby_eval_tree;
+ if (!tree) {
+ tree = NEW_NIL();
+ }
+ if (ruby_eval_tree_begin) {
+ NODE *scope = ruby_eval_tree;
+
+ if (scope) {
+ scope->nd_body = NEW_PRELUDE(ruby_eval_tree_begin, scope->nd_body);
+ }
+ tree = scope;
+ }
+ else {
+ tree = ruby_eval_tree;
+ }
+ return (VALUE)tree;
+}
+
+static NODE*
+yycompile(struct parser_params *parser, const char *f, int line)
+{
+ ruby_sourcefile = ruby_strdup(f);
+ ruby_sourceline = line - 1;
+ return (NODE *)ruby_suppress_tracing(yycompile0, (VALUE)parser, Qtrue);
+}
+#endif /* !RIPPER */
+
+static VALUE
+lex_get_str(struct parser_params *parser, VALUE s)
+{
+ char *beg, *end, *pend;
+
+ beg = RSTRING_PTR(s);
+ if (lex_gets_ptr) {
+ if (RSTRING_LEN(s) == lex_gets_ptr) return Qnil;
+ beg += lex_gets_ptr;
+ }
+ pend = RSTRING_PTR(s) + RSTRING_LEN(s);
+ end = beg;
+ while (end < pend) {
+ if (*end++ == '\n') break;
+ }
+ lex_gets_ptr = end - RSTRING_PTR(s);
+ return rb_enc_str_new(beg, end - beg, rb_enc_get(s));
+}
+
+static VALUE
+lex_getline(struct parser_params *parser)
+{
+ VALUE line = (*parser->parser_lex_gets)(parser, parser->parser_lex_input);
+#ifndef RIPPER
+ if (ruby_debug_lines && !NIL_P(line)) {
+ rb_ary_push(ruby_debug_lines, line);
+ }
+ if (ruby_coverage && !NIL_P(line)) {
+ rb_ary_push(ruby_coverage, Qnil);
+ }
+#endif
+ return line;
+}
+
+#ifndef RIPPER
+NODE*
+rb_compile_string(const char *f, VALUE s, int line)
+{
+ VALUE volatile vparser = rb_parser_new();
+
+ return rb_parser_compile_string(vparser, f, s, line);
+}
+
+NODE*
+rb_parser_compile_string(volatile VALUE vparser, const char *f, VALUE s, int line)
+{
+ struct parser_params *parser;
+ NODE *node;
+ volatile VALUE tmp;
+
+ Data_Get_Struct(vparser, struct parser_params, parser);
+ lex_gets = lex_get_str;
+ lex_gets_ptr = 0;
+ lex_input = s;
+ lex_pbeg = lex_p = lex_pend = 0;
+ compile_for_eval = rb_parse_in_eval();
+
+ node = yycompile(parser, f, line);
+ tmp = vparser; /* prohibit tail call optimization */
+
+ return node;
+}
+
+NODE*
+rb_compile_cstr(const char *f, const char *s, int len, int line)
+{
+ return rb_compile_string(f, rb_str_new(s, len), line);
+}
+
+NODE*
+rb_parser_compile_cstr(volatile VALUE vparser, const char *f, const char *s, int len, int line)
+{
+ return rb_parser_compile_string(vparser, f, rb_str_new(s, len), line);
+}
+
+static VALUE
+lex_io_gets(struct parser_params *parser, VALUE io)
+{
+ return rb_io_gets(io);
+}
+
+NODE*
+rb_compile_file(const char *f, VALUE file, int start)
+{
+ VALUE volatile vparser = rb_parser_new();
+
+ return rb_parser_compile_file(vparser, f, file, start);
+}
+
+NODE*
+rb_parser_compile_file(volatile VALUE vparser, const char *f, VALUE file, int start)
+{
+ struct parser_params *parser;
+ volatile VALUE tmp;
+ NODE *node;
+
+ Data_Get_Struct(vparser, struct parser_params, parser);
+ lex_gets = lex_io_gets;
+ lex_input = file;
+ lex_pbeg = lex_p = lex_pend = 0;
+
+ node = yycompile(parser, f, start);
+ tmp = vparser; /* prohibit tail call optimization */
+
+ return node;
+}
+#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
+
+enum string_type {
+ 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) {
+ rb_enc_associate(str, rb_usascii_encoding());
+ }
+ 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->parser_lex_p = parser->parser_lex_pend)
+
+static inline int
+parser_nextc(struct parser_params *parser)
+{
+ int c;
+
+ if (lex_p == lex_pend) {
+ 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 = Qtrue;
+ lex_goto_eol(parser);
+ return -1;
+ }
+ }
+ {
+#ifdef RIPPER
+ if (parser->tokp < lex_pend) {
+ if (NIL_P(parser->delayed)) {
+ parser->delayed = rb_str_buf_new(1024);
+ rb_str_buf_cat(parser->delayed,
+ parser->tokp, lex_pend - parser->tokp);
+ parser->delayed_line = ruby_sourceline;
+ parser->delayed_col = 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);
+#ifdef RIPPER
+ ripper_flush(parser);
+#endif
+ lex_lastline = v;
+ }
+ }
+ c = (unsigned char)*lex_p++;
+ if (c == '\r' && lex_p < lex_pend && *lex_p == '\n') {
+ lex_p++;
+ c = '\n';
+ }
+
+ 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 peek(c) (lex_p != lex_pend && (c) == *lex_p)
+
+#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;
+ 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, int *numlen)
+{
+ int c;
+
+ c = scan_hex(lex_p, 2, numlen);
+ if (!*numlen) {
+ yyerror("invalid hex escape");
+ return 0;
+ }
+ lex_p += *numlen;
+ return c;
+}
+
+#define tokcopy(n) memcpy(tokspace(n), lex_p - (n), (n))
+
+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
+ */
+
+ int codepoint;
+ int numlen;
+
+ if (regexp_literal) { tokadd('\\'); tokadd('u'); }
+
+ if (peek('{')) { /* handle \u{...} form */
+ do {
+ if (regexp_literal) { tokadd(*lex_p); }
+ nextc();
+ codepoint = scan_hex(lex_p, 6, &numlen);
+ if (numlen == 0) {
+ yyerror("invalid Unicode escape");
+ return 0;
+ }
+ if (codepoint > 0x10ffff) {
+ yyerror("invalid Unicode codepoint (too large)");
+ return 0;
+ }
+ lex_p += numlen;
+ if (regexp_literal) {
+ tokcopy(numlen);
+ }
+ else if (codepoint >= 0x80) {
+ *encp = UTF8_ENC();
+ if (string_literal) tokaddmbc(codepoint, *encp);
+ }
+ else if (string_literal) {
+ if (codepoint == 0 && symbol_literal) {
+ yyerror("symbol cannot contain '\\u{0}'");
+ return 0;
+ }
+
+ tokadd(codepoint);
+ }
+ } while (string_literal && (peek(' ') || peek('\t')));
+
+ if (!peek('}')) {
+ yyerror("unterminated Unicode escape");
+ return 0;
+ }
+
+ if (regexp_literal) { tokadd('}'); }
+ nextc();
+ }
+ else { /* handle \uxxxx form */
+ codepoint = scan_hex(lex_p, 4, &numlen);
+ if (numlen < 4) {
+ yyerror("invalid Unicode escape");
+ return 0;
+ }
+ lex_p += 4;
+ if (regexp_literal) {
+ tokcopy(4);
+ }
+ else if (codepoint >= 0x80) {
+ *encp = UTF8_ENC();
+ if (string_literal) tokaddmbc(codepoint, *encp);
+ }
+ else if (string_literal) {
+ if (codepoint == 0 && symbol_literal) {
+ yyerror("symbol cannot contain '\\u0000'");
+ return 0;
+ }
+
+ tokadd(codepoint);
+ }
+ }
+
+ return codepoint;
+}
+
+#define ESCAPE_CONTROL 1
+#define ESCAPE_META 2
+
+static int
+parser_read_escape(struct parser_params *parser, int flags,
+ rb_encoding **encp)
+{
+ int c;
+ int 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':
+ if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
+ {
+ int numlen;
+
+ pushback(c);
+ c = scan_oct(lex_p, 3, &numlen);
+ lex_p += numlen;
+ }
+ return c;
+
+ case 'x': /* hex constant */
+ if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
+ 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()) != '-') {
+ pushback(c);
+ goto eof;
+ }
+ if ((c = nextc()) == '\\') {
+ 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()) != '-') {
+ pushback(c);
+ goto eof;
+ }
+ case 'c':
+ if (flags & ESCAPE_CONTROL) goto eof;
+ if ((c = nextc())== '\\') {
+ 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:
+ yyerror("Invalid escape character syntax");
+ 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;
+
+ 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':
+ if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
+ {
+ int numlen;
+ int oct;
+
+ oct = scan_oct(--lex_p, 3, &numlen);
+ if (numlen == 0) goto eof;
+ lex_p += numlen;
+ tokcopy(numlen + 1);
+ }
+ return 0;
+
+ case 'x': /* hex constant */
+ if (flags & (ESCAPE_CONTROL|ESCAPE_META)) goto eof;
+ {
+ int numlen;
+ int hex;
+
+ hex = tok_hex(&numlen);
+ if (numlen == 0) goto eof;
+ tokcopy(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:
+ yyerror("Invalid escape character syntax");
+ return -1;
+
+ default:
+ tokadd('\\');
+ tokadd(c);
+ }
+ return 0;
+}
+
+extern int rb_char_to_option_kcode(int c, int *option, int *kcode);
+
+static int
+parser_regx_options(struct parser_params *parser)
+{
+ int kcode = 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)) {
+ options |= opt;
+ if (kc >= 0) kcode = c;
+ }
+ else {
+ tokadd(c);
+ }
+ }
+ 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(VALUE str)
+{
+ /* TODO: should use another API? */
+ if (RBASIC(str)->flags & RSTRING_NOEMBED)
+ xfree(RSTRING_PTR(str));
+ rb_gc_force_recycle(str);
+}
+
+static int
+parser_tokadd_mbchar(struct parser_params *parser, int c)
+{
+ int len = parser_precise_mbclen();
+ if (!MBCLEN_CHARFOUND_P(len)) {
+ compile_error(PARSER_ARG "invalid multibyte char");
+ return -1;
+ }
+ tokadd(c);
+ lex_p += --len;
+ if (len > 0) tokcopy(len);
+ return c;
+}
+
+#define tokadd_mbchar(c) parser_tokadd_mbchar(parser, c)
+
+static int
+parser_tokadd_string(struct parser_params *parser,
+ int func, int term, int paren, long *nest,
+ rb_encoding **encp)
+{
+ int c;
+ int has_nonascii = 0;
+ rb_encoding *enc = *encp;
+ char *errbuf = 0;
+ static const char mixed_msg[] = "%s mixed within %s source";
+
+#define mixed_error(enc1, enc2) if (!errbuf) { \
+ int 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)); \
+ yyerror(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 (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 == '\\') {
+ const char *beg = 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;
+ }
+ parser_tokadd_utf8(parser, &enc, 1,
+ func & STR_FUNC_SYMBOL,
+ func & STR_FUNC_REGEXP);
+ if (has_nonascii && enc != *encp) {
+ mixed_escape(beg, enc, *encp);
+ }
+ continue;
+
+ default:
+ if (func & STR_FUNC_REGEXP) {
+ pushback(c);
+ if ((c = tokadd_escape(&enc)) < 0)
+ return -1;
+ if (has_nonascii && enc != *encp) {
+ mixed_escape(beg, 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('\\');
+ }
+ }
+ }
+ else if (!parser_isascii()) {
+ has_nonascii = 1;
+ 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 && (func & STR_FUNC_SYMBOL)) {
+ func &= ~STR_FUNC_SYMBOL;
+ compile_error(PARSER_ARG "symbol cannot contain '\\0'");
+ continue;
+ }
+ if (c & 0x80) {
+ has_nonascii = 1;
+ if (enc != *encp) {
+ mixed_error(enc, *encp);
+ continue;
+ }
+ }
+ tokadd(c);
+ }
+ *encp = enc;
+ return c;
+}
+
+#define NEW_STRTERM(func, term, paren) \
+ rb_node_newnode(NODE_STRTERM, (func), (term) | ((paren) << (CHAR_BIT * 2)), 0)
+
+static int
+parser_parse_string(struct parser_params *parser, NODE *quote)
+{
+ int func = quote->nd_func;
+ int term = nd_term(quote);
+ int paren = nd_paren(quote);
+ int c, space = 0;
+ rb_encoding *enc = parser->enc;
+
+ if (func == -1) return tSTRING_END;
+ c = nextc();
+ if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
+ do {c = nextc();} while (ISSPACE(c));
+ space = 1;
+ }
+ if (c == term && !quote->nd_nest) {
+ if (func & STR_FUNC_QWORDS) {
+ quote->nd_func = -1;
+ return ' ';
+ }
+ if (!(func & STR_FUNC_REGEXP)) return tSTRING_END;
+ set_yylval_num(regx_options());
+ return tREGEXP_END;
+ }
+ if (space) {
+ pushback(c);
+ return ' ';
+ }
+ newtok();
+ if ((func & STR_FUNC_EXPAND) && c == '#') {
+ switch (c = nextc()) {
+ case '$':
+ case '@':
+ pushback(c);
+ return tSTRING_DVAR;
+ case '{':
+ return tSTRING_DBEG;
+ }
+ tokadd('#');
+ }
+ pushback(c);
+ if (tokadd_string(func, term, paren, &quote->nd_nest,
+ &enc) == -1) {
+ ruby_sourceline = nd_line(quote);
+ if (func & STR_FUNC_REGEXP) {
+ if (parser->eofp)
+ compile_error(PARSER_ARG "unterminated regexp meets end of file");
+ return tREGEXP_END;
+ }
+ else {
+ if (parser->eofp)
+ compile_error(PARSER_ARG "unterminated string meets end of file");
+ return tSTRING_END;
+ }
+ }
+
+ tokfix();
+ set_yylval_str(STR_NEW3(tok(), toklen(), enc, func));
+ return tSTRING_CONTENT;
+}
+
+static int
+parser_heredoc_identifier(struct parser_params *parser)
+{
+ int c = nextc(), term, func = 0, len;
+
+ if (c == '-') {
+ c = nextc();
+ func = STR_FUNC_INDENT;
+ }
+ switch (c) {
+ case '\'':
+ func |= str_squote; goto quoted;
+ case '"':
+ func |= str_dquote; goto quoted;
+ case '`':
+ func |= str_xquote;
+ quoted:
+ newtok();
+ tokadd(func);
+ term = c;
+ while ((c = nextc()) != -1 && c != term) {
+ if (tokadd_mbchar(c) == -1) return 0;
+ }
+ if (c == -1) {
+ compile_error(PARSER_ARG "unterminated here document identifier");
+ return 0;
+ }
+ break;
+
+ default:
+ if (!parser_is_identchar()) {
+ pushback(c);
+ if (func & STR_FUNC_INDENT) {
+ pushback('-');
+ }
+ return 0;
+ }
+ newtok();
+ term = '"';
+ tokadd(func |= str_dquote);
+ do {
+ if (tokadd_mbchar(c) == -1) return 0;
+ } while ((c = nextc()) != -1 && parser_is_identchar());
+ pushback(c);
+ break;
+ }
+
+ tokfix();
+#ifdef RIPPER
+ ripper_dispatch_scan_event(parser, tHEREDOC_BEG);
+#endif
+ len = lex_p - lex_pbeg;
+ lex_goto_eol(parser);
+ lex_strterm = rb_node_newnode(NODE_HEREDOC,
+ STR_NEW(tok(), toklen()), /* nd_lit */
+ len, /* nd_nth */
+ lex_lastline); /* nd_orig */
+ nd_set_line(lex_strterm, ruby_sourceline);
+#ifdef RIPPER
+ ripper_flush(parser);
+#endif
+ return term == '`' ? tXSTRING_BEG : tSTRING_BEG;
+}
+
+static void
+parser_heredoc_restore(struct parser_params *parser, NODE *here)
+{
+ VALUE line;
+
+#ifdef RIPPER
+ if (!NIL_P(parser->delayed))
+ ripper_dispatch_delayed_token(parser, tSTRING_CONTENT);
+ lex_goto_eol(parser);
+ ripper_dispatch_scan_event(parser, tHEREDOC_END);
+#endif
+ line = here->nd_orig;
+ lex_lastline = line;
+ lex_pbeg = RSTRING_PTR(line);
+ lex_pend = lex_pbeg + RSTRING_LEN(line);
+ lex_p = lex_pbeg + here->nd_nth;
+ heredoc_end = ruby_sourceline;
+ ruby_sourceline = nd_line(here);
+ dispose_string(here->nd_lit);
+ rb_gc_force_recycle((VALUE)here);
+#ifdef RIPPER
+ ripper_flush(parser);
+#endif
+}
+
+static int
+parser_whole_match_p(struct parser_params *parser,
+ const char *eos, int len, int indent)
+{
+ const char *p = lex_pbeg;
+ int n;
+
+ if (indent) {
+ while (*p && ISSPACE(*p)) p++;
+ }
+ n= lex_pend - (p + len);
+ if (n < 0 || (n > 0 && p[len] != '\n' && p[len] != '\r')) return Qfalse;
+ if (strncmp(eos, p, len) == 0) return Qtrue;
+ return Qfalse;
+}
+
+static int
+parser_here_document(struct parser_params *parser, NODE *here)
+{
+ int c, func, indent = 0;
+ const char *eos, *p, *pend;
+ long len;
+ VALUE str = 0;
+
+ eos = RSTRING_PTR(here->nd_lit);
+ len = RSTRING_LEN(here->nd_lit) - 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);
+ restore:
+ heredoc_restore(lex_strterm);
+ lex_strterm = 0;
+ return 0;
+ }
+ if (was_bol() && whole_match_p(eos, len, indent)) {
+ heredoc_restore(lex_strterm);
+ 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 (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 (nextc() == -1) {
+ if (str) dispose_string(str);
+ goto error;
+ }
+ } while (!whole_match_p(eos, len, indent));
+ }
+ else {
+ /* int mb = ENC_CODERANGE_7BIT, *mbp = &mb;*/
+ rb_encoding *enc = parser->enc;
+ newtok();
+ if (c == '#') {
+ switch (c = nextc()) {
+ case '$':
+ case '@':
+ pushback(c);
+ return tSTRING_DVAR;
+ case '{':
+ return tSTRING_DBEG;
+ }
+ tokadd('#');
+ }
+ do {
+ pushback(c);
+ if ((c = tokadd_string(func, '\n', 0, NULL, &enc)) == -1) {
+ if (parser->eofp) goto error;
+ goto restore;
+ }
+ if (c != '\n') {
+ set_yylval_str(STR_NEW3(tok(), toklen(), enc, func));
+ return tSTRING_CONTENT;
+ }
+ tokadd(nextc());
+ /* 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);
+ }
+ heredoc_restore(lex_strterm);
+ lex_strterm = NEW_STRTERM(-1, 0, 0);
+ set_yylval_str(str);
+ return tSTRING_CONTENT;
+}
+
+#include "lex.c"
+
+#ifndef RIPPER
+static void
+arg_ambiguous_gen(struct parser_params *parser)
+{
+ rb_warning0("ambiguous first argument; put parentheses or even spaces");
+}
+#else
+static void
+arg_ambiguous_gen(struct parser_params *parser)
+{
+ dispatch0(arg_ambiguous);
+}
+#endif
+#define arg_ambiguous() arg_ambiguous_gen(parser)
+
+static int
+lvar_defined_gen(struct parser_params *parser, ID id)
+{
+#ifndef RIPPER
+ return (dyna_in_block() && dvar_defined(id)) || local_id(id);
+#else
+ return 0;
+#endif
+}
+
+/* emacsen -*- hack */
+static int
+parser_encode_length(struct parser_params *parser, const char *name, int len)
+{
+ int 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 - 5] == '-') {
+ if (rb_memcicmp(name + nlen + 1, "dos", 3) == 0)
+ return nlen;
+ if (rb_memcicmp(name + nlen + 1, "mac", 3) == 0)
+ 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;
+
+ if (idx < 0) {
+ rb_raise(rb_eArgError, "unknown encoding name: %s", name);
+ }
+ enc = rb_enc_from_index(idx);
+ if (!rb_enc_asciicompat(enc)) {
+ rb_raise(rb_eArgError, "%s is not ASCII compatible", rb_enc_name(enc));
+ }
+ parser->enc = enc;
+}
+
+#ifndef RIPPER
+typedef int (*rb_magic_comment_length_t)(struct parser_params *parser, const char *name, int 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 (parser->line_count != (parser->has_shebang ? 2 : 1))
+ return;
+ parser_set_encode(parser, val);
+}
+
+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},
+};
+#endif
+
+static const char *
+magic_comment_marker(const char *str, int len)
+{
+ int 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, int len)
+{
+ VALUE name = 0, val = 0;
+ const char *beg, *end, *vbeg, *vend;
+#define str_copy(_s, _p, _n) ((_s) \
+ ? (rb_str_resize((_s), (_n)), \
+ MEMCPY(RSTRING_PTR(_s), (_p), char, (_n)), (_s)) \
+ : ((_s) = STR_NEW((_p), (_n))))
+
+ if (len <= 7) return Qfalse;
+ if (!(beg = magic_comment_marker(str, len))) return Qfalse;
+ if (!(end = magic_comment_marker(beg, str + len - beg))) return Qfalse;
+ str = beg;
+ len = end - beg - 3;
+
+ /* %r"([^\\s\'\":;]+)\\s*:\\s*(\"(?:\\\\.|[^\"])*\"|[^\"\\s;]+)[\\s;]*" */
+ while (len > 0) {
+#ifndef RIPPER
+ const struct magic_comment *p = magic_comments;
+#endif
+ int 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 != ':') 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;
+ }
+ while (len > 0 && (*str == ';' || ISSPACE(*str))) --len, str++;
+
+ n = end - beg;
+ str_copy(name, beg, n);
+#ifndef RIPPER
+ do {
+ if (STRNCASECMP(p->name, RSTRING_PTR(name), n) == 0) {
+ n = vend - vbeg;
+ if (p->length) {
+ n = (*p->length)(parser, vbeg, n);
+ }
+ str_copy(val, vbeg, n);
+ (*p->func)(parser, RSTRING_PTR(name), RSTRING_PTR(val));
+ break;
+ }
+ } while (++p < magic_comments + sizeof(magic_comments) / sizeof(*p));
+#else
+ dispatch2(magic_comment, name, val);
+#endif
+ }
+
+ return Qtrue;
+}
+
+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();
+ 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_set_encode(parser, "UTF-8");
+ lex_p += 2;
+ lex_pbeg = lex_p;
+ return;
+ }
+ break;
+ case EOF:
+ return;
+ }
+ pushback(c);
+ parser->enc = rb_enc_get(lex_lastline);
+}
+
+#define IS_ARG() (lex_state == EXPR_ARG || lex_state == EXPR_CMDARG)
+#define IS_BEG() (lex_state == EXPR_BEG || lex_state == EXPR_MID || lex_state == EXPR_VALUE || lex_state == EXPR_CLASS)
+
+static int
+parser_yylex(struct parser_params *parser)
+{
+ register int c;
+ int space_seen = 0;
+ int cmd_state;
+ enum lex_state_e last_state;
+ rb_encoding *enc;
+ int mb;
+#ifdef RIPPER
+ int fallthru = Qfalse;
+#endif
+
+ if (lex_strterm) {
+ int token;
+ if (nd_type(lex_strterm) == NODE_HEREDOC) {
+ token = here_document(lex_strterm);
+ if (token == tSTRING_END) {
+ lex_strterm = 0;
+ lex_state = EXPR_ENDARG;
+ }
+ }
+ else {
+ token = parse_string(lex_strterm);
+ if (token == tSTRING_END || token == tREGEXP_END) {
+ rb_gc_force_recycle((VALUE)lex_strterm);
+ lex_strterm = 0;
+ lex_state = EXPR_ENDARG;
+ }
+ }
+ return token;
+ }
+ cmd_state = command_start;
+ command_start = Qfalse;
+ retry:
+ 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++;
+#ifdef RIPPER
+ while ((c = nextc())) {
+ switch (c) {
+ case ' ': case '\t': case '\f': case '\r':
+ case '\13': /* '\v' */
+ break;
+ default:
+ goto outofloop;
+ }
+ }
+ outofloop:
+ pushback(c);
+ ripper_dispatch_scan_event(parser, tSP);
+#endif
+ goto retry;
+
+ case '#': /* it's a comment */
+ /* no magic_comment in shebang line */
+ if (parser->line_count == (parser->has_shebang ? 2 : 1)
+ && (lex_p - lex_pbeg) == 1) {
+ if (!parser_magic_comment(parser, lex_p, lex_pend - lex_p)) {
+ set_file_encoding(parser, lex_p, lex_pend);
+ }
+ }
+ lex_p = lex_pend;
+#ifdef RIPPER
+ ripper_dispatch_scan_event(parser, tCOMMENT);
+ fallthru = Qtrue;
+#endif
+ /* fall through */
+ case '\n':
+ switch (lex_state) {
+ case EXPR_BEG:
+ case EXPR_FNAME:
+ case EXPR_DOT:
+ case EXPR_CLASS:
+ case EXPR_VALUE:
+#ifdef RIPPER
+ if (!fallthru) {
+ ripper_dispatch_scan_event(parser, tIGNORED_NL);
+ }
+ fallthru = Qfalse;
+#endif
+ goto retry;
+ default:
+ break;
+ }
+ while ((c = nextc())) {
+ switch (c) {
+ case ' ': case '\t': case '\f': case '\r':
+ case '\13': /* '\v' */
+ space_seen++;
+ break;
+ case '.': {
+ if ((c = nextc()) != '.') {
+ pushback(c);
+ pushback('.');
+ 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 = Qtrue;
+ lex_state = EXPR_BEG;
+ return '\n';
+
+ case '*':
+ if ((c = nextc()) == '*') {
+ if ((c = nextc()) == '=') {
+ set_yylval_id(tPOW);
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ c = tPOW;
+ }
+ else {
+ if (c == '=') {
+ set_yylval_id('*');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ if (IS_ARG() && space_seen && !ISSPACE(c)) {
+ rb_warning0("`*' interpreted as argument prefix");
+ c = tSTAR;
+ }
+ else if (IS_BEG()) {
+ c = tSTAR;
+ }
+ else {
+ c = '*';
+ }
+ }
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG; break;
+ }
+ return c;
+
+ case '!':
+ c = nextc();
+ if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
+ lex_state = EXPR_ARG;
+ if (c == '@') {
+ return '!';
+ }
+ }
+ else {
+ 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])) {
+#ifdef RIPPER
+ int first_p = Qtrue;
+
+ lex_goto_eol(parser);
+ ripper_dispatch_scan_event(parser, tEMBDOC_BEG);
+#endif
+ for (;;) {
+ lex_goto_eol(parser);
+#ifdef RIPPER
+ if (!first_p) {
+ ripper_dispatch_scan_event(parser, tEMBDOC);
+ }
+ first_p = Qfalse;
+#endif
+ c = nextc();
+ if (c == -1) {
+ compile_error(PARSER_ARG "embedded document meets end of file");
+ return 0;
+ }
+ if (c != '=') continue;
+ if (strncmp(lex_p, "end", 3) == 0 &&
+ (lex_p + 3 == lex_pend || ISSPACE(lex_p[3]))) {
+ break;
+ }
+ }
+ lex_goto_eol(parser);
+#ifdef RIPPER
+ ripper_dispatch_scan_event(parser, tEMBDOC_END);
+#endif
+ goto retry;
+ }
+ }
+
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG; break;
+ }
+ 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 '<':
+ c = nextc();
+ if (c == '<' &&
+ lex_state != EXPR_END &&
+ lex_state != EXPR_DOT &&
+ lex_state != EXPR_ENDARG &&
+ lex_state != EXPR_CLASS &&
+ (!IS_ARG() || space_seen)) {
+ int token = heredoc_identifier();
+ if (token) return token;
+ }
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG; break;
+ }
+ if (c == '=') {
+ if ((c = nextc()) == '>') {
+ return tCMP;
+ }
+ pushback(c);
+ return tLEQ;
+ }
+ if (c == '<') {
+ if ((c = nextc()) == '=') {
+ set_yylval_id(tLSHFT);
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ return tLSHFT;
+ }
+ pushback(c);
+ return '<';
+
+ case '>':
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG; break;
+ }
+ if ((c = nextc()) == '=') {
+ return tGEQ;
+ }
+ if (c == '>') {
+ if ((c = nextc()) == '=') {
+ set_yylval_id(tRSHFT);
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ return tRSHFT;
+ }
+ pushback(c);
+ return '>';
+
+ case '"':
+ lex_strterm = NEW_STRTERM(str_dquote, '"', 0);
+ return tSTRING_BEG;
+
+ case '`':
+ if (lex_state == EXPR_FNAME) {
+ lex_state = EXPR_END;
+ return c;
+ }
+ if (lex_state == EXPR_DOT) {
+ if (cmd_state)
+ lex_state = EXPR_CMDARG;
+ else
+ lex_state = EXPR_ARG;
+ return c;
+ }
+ lex_strterm = NEW_STRTERM(str_xquote, '`', 0);
+ return tXSTRING_BEG;
+
+ case '\'':
+ lex_strterm = NEW_STRTERM(str_squote, '\'', 0);
+ return tSTRING_BEG;
+
+ case '?':
+ if (lex_state == EXPR_END ||
+ lex_state == EXPR_ENDARG) {
+ lex_state = EXPR_VALUE;
+ return '?';
+ }
+ c = nextc();
+ if (c == -1) {
+ compile_error(PARSER_ARG "incomplete character syntax");
+ return 0;
+ }
+ if (rb_enc_isspace(c, parser->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_warnI("invalid character syntax; use ?\\%c", c2);
+ }
+ }
+ ternary:
+ pushback(c);
+ lex_state = EXPR_VALUE;
+ return '?';
+ }
+ newtok();
+ enc = parser->enc;
+ if (!parser_isascii()) {
+ if (tokadd_mbchar(c) == -1) return 0;
+ }
+ else if ((rb_enc_isalnum(c, parser->enc) || c == '_') &&
+ lex_p < lex_pend && is_identchar(lex_p, lex_pend, parser->enc)) {
+ goto ternary;
+ }
+ else if (c == '\\') {
+ if (peek('u')) {
+ nextc();
+ c = parser_tokadd_utf8(parser, &enc, 0, 0, 0);
+ if (0x80 <= c) {
+ tokaddmbc(c, enc);
+ }
+ else {
+ tokadd(c);
+ }
+ }
+ else {
+ c = read_escape(0, &enc);
+ tokadd(c);
+ }
+ }
+ else {
+ tokadd(c);
+ }
+ tokfix();
+ set_yylval_str(STR_NEW3(tok(), toklen(), enc, 0));
+ lex_state = EXPR_ENDARG;
+ return tCHAR;
+
+ case '&':
+ if ((c = nextc()) == '&') {
+ lex_state = EXPR_BEG;
+ if ((c = nextc()) == '=') {
+ set_yylval_id(tANDOP);
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ return tANDOP;
+ }
+ else if (c == '=') {
+ set_yylval_id('&');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ if (IS_ARG() && space_seen && !ISSPACE(c)) {
+ rb_warning0("`&' interpreted as argument prefix");
+ c = tAMPER;
+ }
+ else if (IS_BEG()) {
+ c = tAMPER;
+ }
+ else {
+ c = '&';
+ }
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG;
+ }
+ return c;
+
+ case '|':
+ if ((c = nextc()) == '|') {
+ lex_state = EXPR_BEG;
+ if ((c = nextc()) == '=') {
+ set_yylval_id(tOROP);
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ return tOROP;
+ }
+ if (c == '=') {
+ set_yylval_id('|');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
+ lex_state = EXPR_ARG;
+ }
+ else {
+ lex_state = EXPR_BEG;
+ }
+ pushback(c);
+ return '|';
+
+ case '+':
+ c = nextc();
+ if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
+ lex_state = EXPR_ARG;
+ if (c == '@') {
+ return tUPLUS;
+ }
+ pushback(c);
+ return '+';
+ }
+ if (c == '=') {
+ set_yylval_id('+');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ if (IS_BEG() ||
+ (IS_ARG() && space_seen && !ISSPACE(c))) {
+ if (IS_ARG()) arg_ambiguous();
+ lex_state = EXPR_BEG;
+ pushback(c);
+ if (ISDIGIT(c)) {
+ c = '+';
+ goto start_num;
+ }
+ return tUPLUS;
+ }
+ lex_state = EXPR_BEG;
+ pushback(c);
+ return '+';
+
+ case '-':
+ c = nextc();
+ if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
+ lex_state = EXPR_ARG;
+ if (c == '@') {
+ return tUMINUS;
+ }
+ pushback(c);
+ return '-';
+ }
+ if (c == '=') {
+ set_yylval_id('-');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ if (c == '>') {
+ lex_state = EXPR_ARG;
+ return tLAMBDA;
+ }
+ if (IS_BEG() ||
+ (IS_ARG() && space_seen && !ISSPACE(c))) {
+ if (IS_ARG()) arg_ambiguous();
+ lex_state = EXPR_BEG;
+ pushback(c);
+ if (ISDIGIT(c)) {
+ return tUMINUS_NUM;
+ }
+ return tUMINUS;
+ }
+ lex_state = EXPR_BEG;
+ pushback(c);
+ return '-';
+
+ case '.':
+ lex_state = EXPR_BEG;
+ if ((c = nextc()) == '.') {
+ if ((c = nextc()) == '.') {
+ return tDOT3;
+ }
+ pushback(c);
+ return tDOT2;
+ }
+ pushback(c);
+ if (ISDIGIT(c)) {
+ yyerror("no .<digit> floating literal anymore; put 0 before dot");
+ }
+ lex_state = EXPR_DOT;
+ return '.';
+
+ start_num:
+ case '0': case '1': case '2': case '3': case '4':
+ case '5': case '6': case '7': case '8': case '9':
+ {
+ int is_float, seen_point, seen_e, nondigit;
+
+ is_float = seen_point = seen_e = nondigit = 0;
+ lex_state = EXPR_ENDARG;
+ newtok();
+ if (c == '-' || c == '+') {
+ tokadd(c);
+ c = nextc();
+ }
+ if (c == '0') {
+ int start = toklen();
+ c = nextc();
+ if (c == 'x' || c == 'X') {
+ /* hexadecimal */
+ c = nextc();
+ if (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) {
+ yyerror("numeric literal without digits");
+ }
+ else if (nondigit) goto trailing_uc;
+ set_yylval_literal(rb_cstr_to_inum(tok(), 16, Qfalse));
+ return tINTEGER;
+ }
+ 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) {
+ yyerror("numeric literal without digits");
+ }
+ else if (nondigit) goto trailing_uc;
+ set_yylval_literal(rb_cstr_to_inum(tok(), 2, Qfalse));
+ return tINTEGER;
+ }
+ if (c == 'd' || c == 'D') {
+ /* decimal */
+ c = nextc();
+ if (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) {
+ yyerror("numeric literal without digits");
+ }
+ else if (nondigit) goto trailing_uc;
+ set_yylval_literal(rb_cstr_to_inum(tok(), 10, Qfalse));
+ return tINTEGER;
+ }
+ if (c == '_') {
+ /* 0_0 */
+ goto octal_number;
+ }
+ if (c == 'o' || c == 'O') {
+ /* prefixed octal */
+ c = nextc();
+ if (c == '_' || !ISDIGIT(c)) {
+ yyerror("numeric literal without 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;
+ set_yylval_literal(rb_cstr_to_inum(tok(), 8, Qfalse));
+ return tINTEGER;
+ }
+ if (nondigit) {
+ pushback(c);
+ goto trailing_uc;
+ }
+ }
+ if (c > '7' && c <= '9') {
+ invalid_octal:
+ yyerror("Invalid octal digit");
+ }
+ else if (c == '.' || c == 'e' || c == 'E') {
+ tokadd('0');
+ }
+ else {
+ pushback(c);
+ set_yylval_literal(INT2FIX(0));
+ return tINTEGER;
+ }
+ }
+
+ 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 (!ISDIGIT(c0)) {
+ pushback(c0);
+ goto decode_num;
+ }
+ c = c0;
+ }
+ tokadd('.');
+ tokadd(c);
+ is_float++;
+ seen_point++;
+ nondigit = 0;
+ break;
+
+ case 'e':
+ case 'E':
+ if (nondigit) {
+ pushback(c);
+ c = nondigit;
+ goto decode_num;
+ }
+ if (seen_e) {
+ goto decode_num;
+ }
+ tokadd(c);
+ seen_e++;
+ is_float++;
+ nondigit = c;
+ c = nextc();
+ if (c != '-' && c != '+') continue;
+ tokadd(c);
+ nondigit = c;
+ break;
+
+ case '_': /* `_' in number just ignored */
+ if (nondigit) goto decode_num;
+ nondigit = c;
+ break;
+
+ default:
+ goto decode_num;
+ }
+ c = nextc();
+ }
+
+ decode_num:
+ pushback(c);
+ tokfix();
+ if (nondigit) {
+ char tmp[30];
+ trailing_uc:
+ sprintf(tmp, "trailing `%c' in number", nondigit);
+ yyerror(tmp);
+ }
+ if (is_float) {
+ double d = strtod(tok(), 0);
+ if (errno == ERANGE) {
+ rb_warningS("Float %s out of range", tok());
+ errno = 0;
+ }
+ set_yylval_literal(DOUBLE2NUM(d));
+ return tFLOAT;
+ }
+ set_yylval_literal(rb_cstr_to_inum(tok(), 10, Qfalse));
+ return tINTEGER;
+ }
+
+ case ')':
+ case ']':
+ paren_nest--;
+ case '}':
+ COND_LEXPOP();
+ CMDARG_LEXPOP();
+ if (c == ')')
+ lex_state = EXPR_END;
+ else
+ lex_state = EXPR_ENDARG;
+ return c;
+
+ case ':':
+ c = nextc();
+ if (c == ':') {
+ if (IS_BEG() ||
+ lex_state == EXPR_CLASS || (IS_ARG() && space_seen)) {
+ lex_state = EXPR_BEG;
+ return tCOLON3;
+ }
+ lex_state = EXPR_DOT;
+ return tCOLON2;
+ }
+ if (lex_state == EXPR_END ||
+ lex_state == EXPR_ENDARG || ISSPACE(c)) {
+ pushback(c);
+ lex_state = EXPR_BEG;
+ return ':';
+ }
+ 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;
+ }
+ 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('/');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ pushback(c);
+ if (IS_ARG() && space_seen) {
+ if (!ISSPACE(c)) {
+ arg_ambiguous();
+ lex_strterm = NEW_STRTERM(str_regexp, '/', 0);
+ return tREGEXP_BEG;
+ }
+ }
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG; break;
+ }
+ return '/';
+
+ case '^':
+ if ((c = nextc()) == '=') {
+ set_yylval_id('^');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG; break;
+ }
+ pushback(c);
+ return '^';
+
+ case ';':
+ lex_state = EXPR_BEG;
+ command_start = Qtrue;
+ return ';';
+
+ case ',':
+ lex_state = EXPR_BEG;
+ return ',';
+
+ case '~':
+ if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
+ if ((c = nextc()) != '@') {
+ pushback(c);
+ }
+ lex_state = EXPR_ARG;
+ }
+ else {
+ lex_state = EXPR_BEG;
+ }
+ return '~';
+
+ case '(':
+ if (IS_BEG()) {
+ c = tLPAREN;
+ }
+ else if (space_seen) {
+ if (IS_ARG()) {
+ c = tLPAREN_ARG;
+ }
+ }
+ paren_nest++;
+ COND_PUSH(0);
+ CMDARG_PUSH(0);
+ lex_state = EXPR_BEG;
+ return c;
+
+ case '[':
+ paren_nest++;
+ if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
+ lex_state = EXPR_ARG;
+ if ((c = nextc()) == ']') {
+ if ((c = nextc()) == '=') {
+ return tASET;
+ }
+ pushback(c);
+ return tAREF;
+ }
+ pushback(c);
+ return '[';
+ }
+ else if (IS_BEG()) {
+ c = tLBRACK;
+ }
+ else if (IS_ARG() && space_seen) {
+ c = tLBRACK;
+ }
+ lex_state = EXPR_BEG;
+ COND_PUSH(0);
+ CMDARG_PUSH(0);
+ return c;
+
+ case '{':
+ if (lpar_beg && lpar_beg == paren_nest) {
+ lex_state = EXPR_BEG;
+ lpar_beg = 0;
+ --paren_nest;
+ return tLAMBEG;
+ }
+ if (IS_ARG() || lex_state == EXPR_END)
+ c = '{'; /* block (primary) */
+ else if (lex_state == EXPR_ENDARG)
+ c = tLBRACE_ARG; /* block (expr) */
+ else
+ c = tLBRACE; /* hash */
+ COND_PUSH(0);
+ CMDARG_PUSH(0);
+ lex_state = EXPR_BEG;
+ if (c != tLBRACE) command_start = Qtrue;
+ return c;
+
+ case '\\':
+ c = nextc();
+ if (c == '\n') {
+ space_seen = 1;
+#ifdef RIPPER
+ ripper_dispatch_scan_event(parser, tSP);
+#endif
+ goto retry; /* skip \\n */
+ }
+ pushback(c);
+ return '\\';
+
+ case '%':
+ if (IS_BEG()) {
+ int term;
+ int paren;
+
+ c = nextc();
+ quotation:
+ if (!ISALNUM(c)) {
+ term = c;
+ c = 'Q';
+ }
+ else {
+ term = nextc();
+ if (rb_enc_isalnum(term, parser->enc) || !parser_isascii()) {
+ yyerror("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 '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);
+ lex_state = EXPR_FNAME;
+ return tSYMBEG;
+
+ default:
+ yyerror("unknown type of %string");
+ return 0;
+ }
+ }
+ if ((c = nextc()) == '=') {
+ set_yylval_id('%');
+ lex_state = EXPR_BEG;
+ return tOP_ASGN;
+ }
+ if (IS_ARG() && space_seen && !ISSPACE(c)) {
+ goto quotation;
+ }
+ switch (lex_state) {
+ case EXPR_FNAME: case EXPR_DOT:
+ lex_state = EXPR_ARG; break;
+ default:
+ lex_state = EXPR_BEG; break;
+ }
+ pushback(c);
+ return '%';
+
+ case '$':
+ last_state = lex_state;
+ lex_state = EXPR_ENDARG;
+ 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);
+ tokfix();
+ set_yylval_id(rb_intern(tok()));
+ return tGVAR;
+
+ case '-':
+ tokadd('$');
+ tokadd(c);
+ c = nextc();
+ if (parser_is_identchar()) {
+ if (tokadd_mbchar(c) == -1) return 0;
+ }
+ else {
+ pushback(c);
+ }
+ gvar:
+ tokfix();
+ set_yylval_id(rb_intern(tok()));
+ return tGVAR;
+
+ case '&': /* $&: last match */
+ case '`': /* $`: string before last match */
+ case '\'': /* $': string after last match */
+ case '+': /* $+: string matches last paren. */
+ if (last_state == EXPR_FNAME) {
+ tokadd('$');
+ 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('$');
+ do {
+ tokadd(c);
+ c = nextc();
+ } while (ISDIGIT(c));
+ pushback(c);
+ if (last_state == EXPR_FNAME) goto gvar;
+ tokfix();
+ set_yylval_node(NEW_NTH_REF(atoi(tok()+1)));
+ return tNTH_REF;
+
+ default:
+ if (!parser_is_identchar()) {
+ pushback(c);
+ return '$';
+ }
+ case '0':
+ tokadd('$');
+ }
+ break;
+
+ case '@':
+ c = nextc();
+ newtok();
+ tokadd('@');
+ if (c == '@') {
+ tokadd('@');
+ c = nextc();
+ }
+ if (ISDIGIT(c)) {
+ if (tokidx == 1) {
+ compile_error(PARSER_ARG "`@%c' is not allowed as an instance variable name", c);
+ }
+ else {
+ compile_error(PARSER_ARG "`@@%c' is not allowed as a class variable name", c);
+ }
+ return 0;
+ }
+ if (!parser_is_identchar()) {
+ pushback(c);
+ return '@';
+ }
+ break;
+
+ case '_':
+ if (was_bol() && whole_match_p("__END__", 7, 0)) {
+ ruby__end__seen = 1;
+ parser->eofp = Qtrue;
+#ifndef RIPPER
+ return -1;
+#else
+ lex_goto_eol(parser);
+ ripper_dispatch_scan_event(parser, k__END__);
+ return 0;
+#endif
+ }
+ newtok();
+ break;
+
+ default:
+ if (!parser_is_identchar()) {
+ rb_compile_error(PARSER_ARG "Invalid char `\\x%02X' in expression", c);
+ goto retry;
+ }
+
+ newtok();
+ break;
+ }
+
+ mb = ENC_CODERANGE_7BIT;
+ do {
+ if (!ISASCII(c)) mb = ENC_CODERANGE_UNKNOWN;
+ if (tokadd_mbchar(c) == -1) return 0;
+ c = nextc();
+ } while (parser_is_identchar());
+ switch (tok()[0]) {
+ case '@': case '$':
+ pushback(c);
+ break;
+ default:
+ if ((c == '!' || c == '?') && !peek('=')) {
+ tokadd(c);
+ }
+ else {
+ pushback(c);
+ }
+ }
+ tokfix();
+
+ {
+ int result = 0;
+
+ last_state = lex_state;
+ switch (tok()[0]) {
+ case '$':
+ lex_state = EXPR_ENDARG;
+ result = tGVAR;
+ break;
+ case '@':
+ lex_state = EXPR_ENDARG;
+ if (tok()[1] == '@')
+ result = tCVAR;
+ else
+ result = tIVAR;
+ break;
+
+ default:
+ if (toklast() == '!' || toklast() == '?') {
+ result = tFID;
+ }
+ else {
+ if (lex_state == EXPR_FNAME) {
+ if ((c = nextc()) == '=' && !peek('~') && !peek('>') &&
+ (!peek('=') || (lex_p + 1 < lex_pend && lex_p[1] == '>'))) {
+ result = tIDENTIFIER;
+ tokadd(c);
+ tokfix();
+ }
+ else {
+ pushback(c);
+ }
+ }
+ if (result == 0 && ISUPPER(tok()[0])) {
+ result = tCONSTANT;
+ }
+ else {
+ result = tIDENTIFIER;
+ }
+ }
+
+ if (mb == ENC_CODERANGE_7BIT && 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;
+ lex_state = kw->state;
+ if (state == EXPR_FNAME) {
+ set_yylval_id(rb_intern(kw->name));
+ return kw->id[0];
+ }
+ if (kw->id[0] == keyword_do) {
+ command_start = Qtrue;
+ if (lpar_beg && lpar_beg == paren_nest) {
+ lpar_beg = 0;
+ --paren_nest;
+ return keyword_do_LAMBDA;
+ }
+ if (COND_P()) return keyword_do_cond;
+ if (CMDARG_P() && state != EXPR_CMDARG)
+ return keyword_do_block;
+ if (state == EXPR_ENDARG || state == EXPR_BEG)
+ return keyword_do_block;
+ return keyword_do;
+ }
+ if (state == EXPR_BEG || state == EXPR_VALUE)
+ return kw->id[0];
+ else {
+ if (kw->id[0] != kw->id[1])
+ lex_state = EXPR_BEG;
+ return kw->id[1];
+ }
+ }
+ }
+
+ if ((lex_state == EXPR_BEG && !cmd_state) ||
+ lex_state == EXPR_ARG ||
+ lex_state == EXPR_CMDARG) {
+ if (peek(':') && !(lex_p + 1 < lex_pend && lex_p[1] == ':')) {
+ lex_state = EXPR_BEG;
+ nextc();
+ set_yylval_id(TOK_INTERN(!ENC_SINGLE(mb)));
+ return tLABEL;
+ }
+ }
+ if (IS_BEG() ||
+ lex_state == EXPR_DOT ||
+ IS_ARG()) {
+ if (cmd_state) {
+ lex_state = EXPR_CMDARG;
+ }
+ else {
+ lex_state = EXPR_ARG;
+ }
+ }
+ else {
+ lex_state = EXPR_END;
+ }
+ }
+ {
+ ID ident = TOK_INTERN(!ENC_SINGLE(mb));
+
+ set_yylval_id(ident);
+ if (last_state != EXPR_DOT && is_local_id(ident) && lvar_defined(ident)) {
+ lex_state = EXPR_END;
+ }
+ }
+ return result;
+ }
+}
+
+#if YYPURE
+static int
+yylex(void *lval, void *p)
+#else
+yylex(void *p)
+#endif
+{
+ struct parser_params *parser = (struct parser_params*)p;
+ int t;
+
+#if YYPURE
+ parser->parser_yylval = lval;
+ parser->parser_yylval->val = Qundef;
+#endif
+ t = parser_yylex(parser);
+#ifdef RIPPER
+ if (!NIL_P(parser->delayed)) {
+ ripper_dispatch_delayed_token(parser, t);
+ return t;
+ }
+ if (t != 0)
+ ripper_dispatch_scan_event(parser, t);
+#endif
+
+ return t;
+}
+
+#ifndef RIPPER
+static NODE*
+node_newnode(struct parser_params *parser, enum node_type type, VALUE a0, VALUE a1, VALUE a2)
+{
+ NODE *n = (rb_node_newnode)(type, a0, a1, a2);
+ nd_set_line(n, ruby_sourceline);
+ return n;
+}
+
+enum node_type
+nodetype(NODE *node) /* for debug */
+{
+ return (enum node_type)nd_type(node);
+}
+
+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;
+ if (orig == (NODE*)1) 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)
+{
+ 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);
+ 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(nd, "statement not reached");
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ if (nd_type(tail) != NODE_BLOCK) {
+ tail = NEW_BLOCK(tail);
+ 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)
+{
+ NODE *last;
+
+ if (list == 0) return NEW_LIST(item);
+ if (list->nd_next) {
+ last = list->nd_next->nd_end;
+ }
+ else {
+ last = list;
+ }
+
+ list->nd_alen += 1;
+ last->nd_next = NEW_LIST(item);
+ list->nd_next->nd_end = last->nd_next;
+ return list;
+}
+
+/* concat two lists */
+static NODE*
+list_concat_gen(struct parser_params *parser, 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 (!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)
+{
+ enum node_type htype;
+
+ if (!head) return tail;
+ if (!tail) return head;
+
+ htype = nd_type(head);
+ if (htype == NODE_EVSTR) {
+ NODE *node = NEW_DSTR(STR_NEW0());
+ head = list_append(node, head);
+ }
+ switch (nd_type(tail)) {
+ case NODE_STR:
+ if (htype == NODE_STR) {
+ if (!literal_concat0(parser, head->nd_lit, tail->nd_lit)) {
+ error:
+ rb_gc_force_recycle((VALUE)head);
+ rb_gc_force_recycle((VALUE)tail);
+ return 0;
+ }
+ rb_gc_force_recycle((VALUE)tail);
+ }
+ else {
+ list_append(head, tail);
+ }
+ 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_gc_force_recycle((VALUE)head);
+ head = tail;
+ }
+ else {
+ nd_set_type(tail, NODE_ARRAY);
+ tail->nd_head = NEW_STR(tail->nd_lit);
+ 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);
+ break;
+ }
+ return head;
+}
+
+static NODE *
+evstr2dstr_gen(struct parser_params *parser, NODE *node)
+{
+ if (nd_type(node) == NODE_EVSTR) {
+ node = list_append(NEW_DSTR(STR_NEW0()), node);
+ }
+ return node;
+}
+
+static NODE *
+new_evstr_gen(struct parser_params *parser, NODE *node)
+{
+ NODE *head = node;
+
+ if (node) {
+ switch (nd_type(node)) {
+ case NODE_STR: case NODE_DSTR: case NODE_EVSTR:
+ return node;
+ }
+ }
+ return NEW_EVSTR(head);
+}
+
+static NODE *
+call_bin_op_gen(struct parser_params *parser, NODE *recv, ID id, NODE *arg1)
+{
+ value_expr(recv);
+ value_expr(arg1);
+ return NEW_CALL(recv, id, NEW_LIST(arg1));
+}
+
+static NODE *
+call_uni_op_gen(struct parser_params *parser, NODE *recv, ID id)
+{
+ value_expr(recv);
+ return NEW_CALL(recv, id, 0);
+}
+
+static NODE*
+match_op_gen(struct parser_params *parser, NODE *node1, NODE *node2)
+{
+ value_expr(node1);
+ value_expr(node2);
+ if (node1) {
+ switch (nd_type(node1)) {
+ case NODE_DREGX:
+ case NODE_DREGX_ONCE:
+ return NEW_MATCH2(node1, node2);
+
+ case NODE_LIT:
+ if (TYPE(node1->nd_lit) == T_REGEXP) {
+ return NEW_MATCH2(node1, node2);
+ }
+ }
+ }
+
+ if (node2) {
+ switch (nd_type(node2)) {
+ case NODE_DREGX:
+ case NODE_DREGX_ONCE:
+ return NEW_MATCH3(node2, node1);
+
+ case NODE_LIT:
+ if (TYPE(node2->nd_lit) == T_REGEXP) {
+ return NEW_MATCH3(node2, node1);
+ }
+ }
+ }
+
+ return NEW_CALL(node1, tMATCH, NEW_LIST(node2));
+}
+
+static NODE*
+gettable_gen(struct parser_params *parser, ID id)
+{
+ if (id == keyword_self) {
+ return NEW_SELF();
+ }
+ else if (id == keyword_nil) {
+ return NEW_NIL();
+ }
+ else if (id == keyword_true) {
+ return NEW_TRUE();
+ }
+ else if (id == keyword_false) {
+ return NEW_FALSE();
+ }
+ else if (id == keyword__FILE__) {
+ return NEW_STR(STR_NEW2(ruby_sourcefile));
+ }
+ else if (id == keyword__LINE__) {
+ return NEW_LIT(INT2FIX(ruby_sourceline));
+ }
+ else if (id == keyword__ENCODING__) {
+ return NEW_LIT(rb_enc_from_encoding(parser->enc));
+ }
+ else if (is_local_id(id)) {
+ if (dyna_in_block() && dvar_defined(id)) return NEW_DVAR(id);
+ if (local_id(id)) return NEW_LVAR(id);
+ /* method call without arguments */
+ return NEW_VCALL(id);
+ }
+ else if (is_global_id(id)) {
+ return NEW_GVAR(id);
+ }
+ else if (is_instance_id(id)) {
+ return NEW_IVAR(id);
+ }
+ else if (is_const_id(id)) {
+ return NEW_CONST(id);
+ }
+ else if (is_class_id(id)) {
+ return NEW_CVAR(id);
+ }
+ compile_error(PARSER_ARG "identifier %s is not valid to get", rb_id2name(id));
+ return 0;
+}
+
+static NODE*
+assignable_gen(struct parser_params *parser, ID id, NODE *val)
+{
+ if (!id) return 0;
+ if (id == keyword_self) {
+ yyerror("Can't change the value of self");
+ }
+ else if (id == keyword_nil) {
+ yyerror("Can't assign to nil");
+ }
+ else if (id == keyword_true) {
+ yyerror("Can't assign to true");
+ }
+ else if (id == keyword_false) {
+ yyerror("Can't assign to false");
+ }
+ else if (id == keyword__FILE__) {
+ yyerror("Can't assign to __FILE__");
+ }
+ else if (id == keyword__LINE__) {
+ yyerror("Can't assign to __LINE__");
+ }
+ else if (id == keyword__ENCODING__) {
+ yyerror("Can't assign to __ENCODING__");
+ }
+ else if (is_local_id(id)) {
+ if (dyna_in_block()) {
+ if (dvar_curr(id)) {
+ return NEW_DASGN_CURR(id, val);
+ }
+ else if (dvar_defined(id)) {
+ return NEW_DASGN(id, val);
+ }
+ else if (local_id(id)) {
+ return NEW_LASGN(id, val);
+ }
+ else{
+ dyna_var(id);
+ return NEW_DASGN_CURR(id, val);
+ }
+ }
+ else {
+ if (!local_id(id)) {
+ local_var(id);
+ }
+ return NEW_LASGN(id, val);
+ }
+ }
+ else if (is_global_id(id)) {
+ return NEW_GASGN(id, val);
+ }
+ else if (is_instance_id(id)) {
+ return NEW_IASGN(id, val);
+ }
+ else if (is_const_id(id)) {
+ if (in_def || in_single)
+ yyerror("dynamic constant assignment");
+ return NEW_CDECL(id, val, 0);
+ }
+ else if (is_class_id(id)) {
+ return NEW_CVASGN(id, val);
+ }
+ else {
+ compile_error(PARSER_ARG "identifier %s is not valid to set", rb_id2name(id));
+ }
+ return 0;
+}
+
+static void
+shadowing_lvar_gen(struct parser_params *parser, ID name)
+{
+ ID uscore;
+
+ CONST_ID(uscore, "_");
+ if (uscore == name) return;
+ if (dyna_in_block()) {
+ if (dvar_curr(name)) {
+ yyerror("duplicated argument name");
+ }
+ else if (dvar_defined(name) || local_id(name)) {
+ rb_warningS("shadowing outer local variable - %s", rb_id2name(name));
+ vtable_add(lvtbl->vars, name);
+ }
+ }
+ else {
+ if (local_id(name)) {
+ yyerror("duplicated argument 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 - %s",
+ rb_id2name(name));
+ return;
+ }
+ shadowing_lvar(name);
+ dyna_var(name);
+}
+
+static NODE *
+aryset_gen(struct parser_params *parser, NODE *recv, NODE *idx)
+{
+ if (recv && nd_type(recv) == NODE_SELF)
+ recv = (NODE *)1;
+ return NEW_ATTRASGN(recv, tASET, idx);
+}
+
+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");
+ }
+}
+
+ID
+rb_id_attrset(ID id)
+{
+ id &= ~ID_SCOPE_MASK;
+ id |= ID_ATTRSET;
+ return id;
+}
+
+static NODE *
+attrset_gen(struct parser_params *parser, NODE *recv, ID id)
+{
+ if (recv && nd_type(recv) == NODE_SELF)
+ recv = (NODE *)1;
+ return NEW_ATTRASGN(recv, rb_id_attrset(id), 0);
+}
+
+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)
+{
+ if (!node2) return node1;
+ switch (nd_type(node1)) {
+ case NODE_BLOCK_PASS:
+ node1->nd_iter = arg_concat(node1->nd_iter, node2);
+ return node1;
+ case NODE_ARGSPUSH:
+ if (nd_type(node2) != NODE_ARRAY) break;
+ node1->nd_body = list_concat(NEW_LIST(node1->nd_body), node2);
+ nd_set_type(node1, NODE_ARGSCAT);
+ return node1;
+ case NODE_ARGSCAT:
+ if (nd_type(node2) != NODE_ARRAY) break;
+ node1->nd_body = list_concat(node1->nd_body, node2);
+ return node1;
+ }
+ return NEW_ARGSCAT(node1, node2);
+}
+
+static NODE *
+arg_append_gen(struct parser_params *parser, NODE *node1, NODE *node2)
+{
+ if (!node1) return NEW_LIST(node2);
+ switch (nd_type(node1)) {
+ case NODE_ARRAY:
+ return list_append(node1, node2);
+ case NODE_BLOCK_PASS:
+ node1->nd_head = arg_append(node1->nd_head, node2);
+ return node1;
+ case NODE_ARGSPUSH:
+ node1->nd_body = list_append(NEW_LIST(node1->nd_body), node2);
+ nd_set_type(node1, NODE_ARGSCAT);
+ return node1;
+ }
+ return NEW_ARGSPUSH(node1, node2);
+}
+
+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 NODE *
+node_assign_gen(struct parser_params *parser, NODE *lhs, NODE *rhs)
+{
+ if (!lhs) return 0;
+
+ switch (nd_type(lhs)) {
+ case NODE_GASGN:
+ case NODE_IASGN:
+ case NODE_IASGN2:
+ 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);
+ 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_DEFN:
+ case NODE_DEFS:
+ parser_warning(node, "void value expression");
+ return Qfalse;
+
+ case NODE_RETURN:
+ case NODE_BREAK:
+ case NODE_NEXT:
+ case NODE_REDO:
+ case NODE_RETRY:
+ if (!cond) yyerror("void value expression");
+ /* or "control never reach"? */
+ return Qfalse;
+
+ 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:
+ 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 Qfalse;
+ node = node->nd_else;
+ break;
+
+ case NODE_AND:
+ case NODE_OR:
+ cond = 1;
+ node = node->nd_2nd;
+ break;
+
+ default:
+ return Qtrue;
+ }
+ }
+
+ return Qtrue;
+}
+
+static void
+void_expr_gen(struct parser_params *parser, NODE *node)
+{
+ const char *useless = 0;
+
+ if (!RTEST(ruby_verbose)) return;
+
+ if (!node) return;
+ switch (nd_type(node)) {
+ case NODE_CALL:
+ 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:
+ case NODE_DREGX_ONCE:
+ 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) {
+ int line = ruby_sourceline;
+
+ ruby_sourceline = nd_line(node);
+ rb_warnS("useless use of %s in void context", useless);
+ ruby_sourceline = line;
+ }
+}
+
+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 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) {
+ switch (nd_type(node)) {
+ end:
+ case NODE_NIL:
+ *body = 0;
+ return;
+ case NODE_RETURN:
+ *body = node = node->nd_stts;
+ continue;
+ case NODE_BEGIN:
+ *body = node = node->nd_body;
+ continue;
+ case NODE_BLOCK:
+ body = &node->nd_end->nd_head;
+ break;
+ case NODE_IF:
+ 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 (!subnodes(nd_head, nd_resq)) goto end;
+ break;
+ default:
+ return;
+ }
+ node = *body;
+ }
+
+#undef subnodes
+}
+
+static int
+assign_in_cond(struct parser_params *parser, NODE *node)
+{
+ switch (nd_type(node)) {
+ case NODE_MASGN:
+ yyerror("multiple assignment in conditional");
+ return 1;
+
+ case NODE_LASGN:
+ case NODE_DASGN:
+ case NODE_GASGN:
+ case NODE_IASGN:
+ break;
+
+ default:
+ return 0;
+ }
+
+ switch (nd_type(node->nd_value)) {
+ case NODE_LIT:
+ case NODE_STR:
+ case NODE_NIL:
+ case NODE_TRUE:
+ case NODE_FALSE:
+ /* reports always */
+ parser_warn(node->nd_value, "found = in conditional, should be ==");
+ return 1;
+
+ case NODE_DSTR:
+ case NODE_XSTR:
+ case NODE_DXSTR:
+ case NODE_EVSTR:
+ case NODE_DREGX:
+ default:
+ break;
+ }
+ 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 void
+fixup_nodes(NODE **rootnode)
+{
+ NODE *node, *next, *head;
+
+ for (node = *rootnode; node; node = next) {
+ enum node_type type;
+ VALUE val;
+
+ next = node->nd_next;
+ head = node->nd_head;
+ rb_gc_force_recycle((VALUE)node);
+ *rootnode = next;
+ switch (type = nd_type(head)) {
+ case NODE_DOT2:
+ case NODE_DOT3:
+ val = rb_range_new(head->nd_beg->nd_lit, head->nd_end->nd_lit,
+ type == NODE_DOT3 ? Qtrue : Qfalse);
+ rb_gc_force_recycle((VALUE)head->nd_beg);
+ rb_gc_force_recycle((VALUE)head->nd_end);
+ nd_set_type(head, NODE_LIT);
+ head->nd_lit = val;
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static NODE *cond0(struct parser_params*,NODE*);
+
+static NODE*
+range_op(struct parser_params *parser, NODE *node)
+{
+ 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("$."))));
+ }
+ return cond0(parser, node);
+}
+
+static int
+literal_node(NODE *node)
+{
+ if (!node) return 1; /* same as NODE_NIL */
+ switch (nd_type(node)) {
+ case NODE_LIT:
+ case NODE_STR:
+ case NODE_DSTR:
+ case NODE_EVSTR:
+ case NODE_DREGX:
+ case NODE_DREGX_ONCE:
+ 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)
+{
+ if (node == 0) return 0;
+ assign_in_cond(parser, node);
+
+ switch (nd_type(node)) {
+ case NODE_DSTR:
+ case NODE_EVSTR:
+ case NODE_STR:
+ rb_warn0("string literal in condition");
+ break;
+
+ case NODE_DREGX:
+ case NODE_DREGX_ONCE:
+ warning_unless_e_option(parser, node, "regex literal in condition");
+ return NEW_MATCH2(node, NEW_GVAR(rb_intern("$_")));
+
+ case NODE_AND:
+ case NODE_OR:
+ node->nd_1st = cond0(parser, node->nd_1st);
+ node->nd_2nd = cond0(parser, node->nd_2nd);
+ break;
+
+ case NODE_DOT2:
+ case NODE_DOT3:
+ node->nd_beg = range_op(parser, node->nd_beg);
+ node->nd_end = range_op(parser, node->nd_end);
+ 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 (!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:
+ parser_warning(node, "literal in condition");
+ break;
+
+ case NODE_LIT:
+ if (TYPE(node->nd_lit) == T_REGEXP) {
+ warn_unless_e_option(parser, node, "regex literal in condition");
+ nd_set_type(node, NODE_MATCH);
+ }
+ else {
+ parser_warning(node, "literal in condition");
+ }
+ default:
+ break;
+ }
+ return node;
+}
+
+static NODE*
+cond_gen(struct parser_params *parser, NODE *node)
+{
+ if (node == 0) return 0;
+ return cond0(parser, node);
+}
+
+static NODE*
+logop_gen(struct parser_params *parser, enum node_type type, NODE *left, NODE *right)
+{
+ value_expr(left);
+ if (left && nd_type(left) == type) {
+ NODE *node = left, *second;
+ while ((second = node->nd_2nd) != 0 && nd_type(second) == type) {
+ node = second;
+ }
+ node->nd_2nd = NEW_NODE(type, second, right, 0);
+ return left;
+ }
+ return NEW_NODE(type, left, right, 0);
+}
+
+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)
+{
+ long state = Qtrue;
+
+ if (node) {
+ no_blockarg(parser, node);
+ if (node && nd_type(node) == NODE_SPLAT) {
+ state = Qtrue;
+ }
+ }
+ else {
+ state = Qfalse;
+ }
+ return NEW_YIELD(node, state);
+}
+
+static NODE*
+negate_lit(NODE *node)
+{
+ switch (TYPE(node->nd_lit)) {
+ case T_FIXNUM:
+ node->nd_lit = LONG2FIX(-FIX2LONG(node->nd_lit));
+ break;
+ case T_BIGNUM:
+ node->nd_lit = rb_funcall(node->nd_lit,tUMINUS,0,0);
+ break;
+ case T_FLOAT:
+ RFLOAT(node->nd_lit)->float_value = -RFLOAT_VALUE(node->nd_lit);
+ break;
+ default:
+ break;
+ }
+ return node;
+}
+
+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, ID b)
+{
+ int saved_line = ruby_sourceline;
+ NODE *node;
+ NODE *i1, *i2 = 0;
+
+ node = NEW_ARGS(m ? m->nd_plen : 0, o);
+ i1 = m ? m->nd_next : 0;
+ node->nd_next = NEW_ARGS_AUX(r, b);
+
+ if (p) {
+ i2 = p->nd_next;
+ node->nd_next->nd_next = NEW_ARGS_AUX(p->nd_pid, p->nd_plen);
+ }
+ else if (i1) {
+ node->nd_next->nd_next = NEW_ARGS_AUX(0, 0);
+ }
+ if (i1 || i2) {
+ node->nd_next->nd_next->nd_next = NEW_NODE(NODE_AND, i1, i2, 0);
+ }
+ ruby_sourceline = saved_line;
+ return node;
+}
+
+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);
+ lvtbl = local;
+}
+
+static void
+local_pop_gen(struct parser_params *parser)
+{
+ struct local_vars *local = lvtbl->prev;
+ vtable_free(lvtbl->args);
+ vtable_free(lvtbl->vars);
+ xfree(lvtbl);
+ lvtbl = local;
+}
+
+static ID*
+vtable_tblcpy(ID *buf, const struct vtable *src)
+{
+ int i, cnt = vtable_size(src);
+
+ if (cnt > 0) {
+ buf[0] = cnt;
+ for (i = 0; i < cnt; i++) {
+ buf[i] = src->tbl[i];
+ }
+ return buf;
+ }
+ return 0;
+}
+
+static ID*
+local_tbl_gen(struct parser_params *parser)
+{
+ int cnt = vtable_size(lvtbl->args) + vtable_size(lvtbl->vars);
+ ID *buf;
+
+ if (cnt <= 0) return 0;
+ buf = ALLOC_N(ID, cnt + 1);
+ vtable_tblcpy(buf+1, lvtbl->args);
+ vtable_tblcpy(buf+vtable_size(lvtbl->args)+1, lvtbl->vars);
+ buf[0] = cnt;
+ return buf;
+}
+
+#include "debug.h"
+static int
+arg_var_gen(struct parser_params *parser, ID id)
+{
+ vtable_add(lvtbl->args, id);
+ return vtable_size(lvtbl->args) - 1;
+}
+
+static int
+local_var_gen(struct parser_params *parser, ID id)
+{
+ vtable_add(lvtbl->vars, id);
+ return vtable_size(lvtbl->vars) - 1;
+}
+
+static int
+local_id_gen(struct parser_params *parser, ID id)
+{
+ struct vtable *vars, *args;
+
+ vars = lvtbl->vars;
+ args = lvtbl->args;
+
+ while (vars && POINTER_P(vars->prev)) {
+ vars = vars->prev;
+ args = args->prev;
+ }
+
+ if (vars && vars->prev == DVARS_INHERIT) {
+ return rb_local_defined(id);
+ }
+ else {
+ return (vtable_included(args, id) ||
+ vtable_included(vars, id));
+ }
+}
+
+static void
+dyna_push_gen(struct parser_params *parser)
+{
+ lvtbl->args = vtable_alloc(lvtbl->args);
+ lvtbl->vars = vtable_alloc(lvtbl->vars);
+}
+
+static void
+dyna_pop_gen(struct parser_params *parser)
+{
+ struct vtable *tmp;
+
+ tmp = lvtbl->args;
+ lvtbl->args = lvtbl->args->prev;
+ vtable_free(tmp);
+ tmp = lvtbl->vars;
+ lvtbl->vars = lvtbl->vars->prev;
+ vtable_free(tmp);
+}
+
+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)
+{
+ struct vtable *vars, *args;
+
+ args = lvtbl->args;
+ vars = lvtbl->vars;
+
+ while (POINTER_P(vars)) {
+ if (vtable_included(args, id)) {
+ return 1;
+ }
+ if (vtable_included(vars, id)) {
+ return 1;
+ }
+ args = args->prev;
+ vars = vars->prev;
+ }
+
+ if (vars == DVARS_INHERIT) {
+ return rb_dvar_defined(id);
+ }
+
+ return 0;
+}
+
+static int
+dvar_curr_gen(struct parser_params *parser, ID id)
+{
+ return (vtable_included(lvtbl->args, id) ||
+ vtable_included(lvtbl->vars, id));
+}
+
+VALUE rb_reg_compile(VALUE str, int options);
+VALUE rb_reg_check_preprocess(VALUE);
+
+static void
+reg_fragment_setenc_gen(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 (parser->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;
+
+ error:
+ compile_error(PARSER_ARG
+ "regexp encoding option '%c' differs from source encoding '%s'",
+ c, rb_enc_name(rb_enc_get(str)));
+}
+
+static void
+reg_fragment_check_gen(struct parser_params* parser, VALUE str, int options)
+{
+ VALUE err;
+ reg_fragment_setenc_gen(parser, str, options);
+ err = rb_reg_check_preprocess(str);
+ if (err != Qnil) {
+ err = rb_obj_as_string(err);
+ compile_error(PARSER_ARG "%s", RSTRING_PTR(err));
+ RB_GC_GUARD(err);
+ }
+}
+
+typedef struct {
+ struct parser_params* parser;
+ rb_encoding *enc;
+ NODE *succ_block;
+ NODE *fail_block;
+ int num;
+} 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;
+ int len = name_end - name;
+ const char *s = (const char *)name;
+ ID var;
+
+ arg->num++;
+
+ if (arg->succ_block == 0) {
+ arg->succ_block = NEW_BEGIN(0);
+ arg->fail_block = NEW_BEGIN(0);
+ }
+
+ if (!len || (*name != '_' && ISASCII(*name) && !rb_enc_islower(*name, enc)) ||
+ rb_reserved_word(s, len) || !rb_enc_symname2_p(s, len, enc)) {
+ return ST_CONTINUE;
+ }
+ var = rb_intern3(s, len, enc);
+ if (dvar_defined(var) || local_id(var)) {
+ rb_warningS("named capture conflicts a local variable - %s",
+ rb_id2name(var));
+ }
+ arg->succ_block = block_append(arg->succ_block,
+ newline_node(node_assign(assignable(var,0),
+ NEW_CALL(
+ gettable(rb_intern("$~")),
+ idAREF,
+ NEW_LIST(NEW_LIT(ID2SYM(var))))
+ )));
+ arg->fail_block = block_append(arg->fail_block,
+ newline_node(node_assign(assignable(var,0), NEW_LIT(Qnil))));
+ return ST_CONTINUE;
+}
+
+static NODE *
+reg_named_capture_assign_gen(struct parser_params* parser, VALUE regexp, NODE *match)
+{
+ reg_named_capture_assign_t arg;
+
+ arg.parser = parser;
+ arg.enc = rb_enc_get(regexp);
+ arg.succ_block = 0;
+ arg.fail_block = 0;
+ arg.num = 0;
+ onig_foreach_name(RREGEXP(regexp)->ptr, reg_named_capture_assign_iter, (void*)&arg);
+
+ if (arg.num == 0)
+ return match;
+
+ return
+ block_append(
+ newline_node(match),
+ NEW_IF(gettable(rb_intern("$~")),
+ block_append(
+ newline_node(arg.succ_block),
+ newline_node(
+ NEW_CALL(
+ gettable(rb_intern("$~")),
+ rb_intern("begin"),
+ NEW_LIST(NEW_LIT(INT2FIX(0)))))),
+ block_append(
+ newline_node(arg.fail_block),
+ newline_node(
+ NEW_LIT(Qnil)))));
+}
+
+static VALUE
+reg_compile_gen(struct parser_params* parser, VALUE str, int options)
+{
+ VALUE re;
+ VALUE err;
+
+ reg_fragment_setenc(str, options);
+ err = rb_errinfo();
+ re = rb_reg_compile(str, options & RE_OPTION_MASK);
+ if (NIL_P(re)) {
+ ID mesg = rb_intern("mesg");
+ VALUE m = rb_attr_get(rb_errinfo(), mesg);
+ rb_set_errinfo(err);
+ if (!NIL_P(err)) {
+ rb_str_append(rb_str_cat(rb_attr_get(err, mesg), "\n", 1), m);
+ }
+ else {
+ compile_error(PARSER_ARG "%s", RSTRING_PTR(m));
+ }
+ return Qnil;
+ }
+ return re;
+}
+
+void
+rb_gc_mark_parser(void)
+{
+}
+
+NODE*
+rb_parser_append_print(VALUE vparser, NODE *node)
+{
+ NODE *prelude = 0;
+ NODE *scope = node;
+ struct parser_params *parser;
+
+ if (!node) return node;
+
+ Data_Get_Struct(vparser, struct parser_params, parser);
+
+ node = node->nd_body;
+
+ if (nd_type(node) == NODE_PRELUDE) {
+ prelude = node;
+ node = node->nd_body;
+ }
+
+ node = block_append(node,
+ NEW_FCALL(rb_intern("print"),
+ NEW_ARRAY(NEW_GVAR(rb_intern("$_")))));
+ if (prelude) {
+ prelude->nd_body = node;
+ scope->nd_body = prelude;
+ }
+ else {
+ scope->nd_body = node;
+ }
+
+ return scope;
+}
+
+NODE *
+rb_parser_while_loop(VALUE vparser, NODE *node, int chop, int split)
+{
+ NODE *prelude = 0;
+ NODE *scope = node;
+ struct parser_params *parser;
+
+ if (!node) return node;
+
+ Data_Get_Struct(vparser, struct parser_params, parser);
+
+ node = node->nd_body;
+
+ if (nd_type(node) == NODE_PRELUDE) {
+ prelude = node;
+ node = node->nd_body;
+ }
+ if (split) {
+ node = block_append(NEW_GASGN(rb_intern("$F"),
+ NEW_CALL(NEW_GVAR(rb_intern("$_")),
+ rb_intern("split"), 0)),
+ node);
+ }
+ if (chop) {
+ node = block_append(NEW_CALL(NEW_GVAR(rb_intern("$_")),
+ rb_intern("chop!"), 0), node);
+ }
+
+ node = NEW_OPT_N(node);
+
+ if (prelude) {
+ prelude->nd_body = node;
+ scope->nd_body = prelude;
+ }
+ else {
+ scope->nd_body = node;
+ }
+
+ return scope;
+}
+
+static const struct {
+ ID token;
+ const char *name;
+} op_tbl[] = {
+ {tDOT2, ".."},
+ {tDOT3, "..."},
+ {'+', "+(binary)"},
+ {'-', "-(binary)"},
+ {tPOW, "**"},
+ {tUPLUS, "+@"},
+ {tUMINUS, "-@"},
+ {tCMP, "<=>"},
+ {tGEQ, ">="},
+ {tLEQ, "<="},
+ {tEQ, "=="},
+ {tEQQ, "==="},
+ {tNEQ, "!="},
+ {tMATCH, "=~"},
+ {tNMATCH, "!~"},
+ {tAREF, "[]"},
+ {tASET, "[]="},
+ {tLSHFT, "<<"},
+ {tRSHFT, ">>"},
+ {tCOLON2, "::"},
+};
+
+#define op_tbl_count (sizeof(op_tbl) / sizeof(op_tbl[0]))
+
+static struct symbols {
+ ID last_id;
+ st_table *sym_id;
+ st_table *id_str;
+ st_table *ivar2_id;
+ st_table *id_ivar2;
+ VALUE op_sym[tLAST_TOKEN];
+} global_symbols = {tLAST_ID};
+
+static const struct st_hash_type symhash = {
+ rb_str_hash_cmp,
+ rb_str_hash,
+};
+
+struct ivar2_key {
+ ID id;
+ VALUE klass;
+};
+
+static int
+ivar2_cmp(struct ivar2_key *key1, struct ivar2_key *key2)
+{
+ if (key1->id == key2->id && key1->klass == key2->klass) {
+ return 0;
+ }
+ return 1;
+}
+
+static int
+ivar2_hash(struct ivar2_key *key)
+{
+ return (key->id << 8) ^ (key->klass >> 2);
+}
+
+static const struct st_hash_type ivar2_hash_type = {
+ ivar2_cmp,
+ ivar2_hash,
+};
+
+void
+Init_sym(void)
+{
+ global_symbols.sym_id = st_init_table_with_size(&symhash, 1000);
+ global_symbols.id_str = st_init_numtable_with_size(1000);
+ global_symbols.ivar2_id = st_init_table_with_size(&ivar2_hash_type, 1000);
+ global_symbols.id_ivar2 = st_init_numtable_with_size(1000);
+
+ Init_id();
+}
+
+void
+rb_gc_mark_symbols(void)
+{
+ rb_mark_tbl(global_symbols.id_str);
+ rb_gc_mark_locations(global_symbols.op_sym,
+ global_symbols.op_sym + tLAST_TOKEN);
+}
+
+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_INTERNAL | (id << ID_SCOPE_SHIFT);
+}
+
+static int
+is_special_global_name(const char *m, const char *e, rb_encoding *enc)
+{
+ int mb = 0;
+
+ if (m >= e) return 0;
+ switch (*m) {
+ case '~': case '*': case '$': case '?': case '!': case '@':
+ case '/': case '\\': case ';': case ',': case '.': case '=':
+ case ':': case '<': case '>': case '\"':
+ case '&': case '`': case '\'': case '+':
+ case '0':
+ ++m;
+ break;
+ case '-':
+ ++m;
+ if (m < e && is_identchar(m, e, enc)) {
+ if (!ISASCII(*m)) mb = 1;
+ m += rb_enc_mbclen(m, e, enc);
+ }
+ break;
+ default:
+ if (!rb_enc_isdigit(*m, enc)) return 0;
+ do {
+ if (!ISASCII(*m)) mb = 1;
+ ++m;
+ } while (rb_enc_isdigit(*m, enc));
+ }
+ return m == e ? mb + 1 : 0;
+}
+
+int
+rb_symname_p(const char *name)
+{
+ return rb_enc_symname_p(name, rb_ascii8bit_encoding());
+}
+
+int
+rb_enc_symname_p(const char *name, rb_encoding *enc)
+{
+ return rb_enc_symname2_p(name, strlen(name), enc);
+}
+
+int
+rb_enc_symname2_p(const char *name, int len, rb_encoding *enc)
+{
+ const char *m = name;
+ const char *e = m + len;
+ int localid = Qfalse;
+
+ if (!m) return Qfalse;
+ switch (*m) {
+ case '\0':
+ return Qfalse;
+
+ case '$':
+ if (is_special_global_name(++m, e, enc)) return Qtrue;
+ goto id;
+
+ case '@':
+ if (*++m == '@') ++m;
+ goto id;
+
+ case '<':
+ switch (*++m) {
+ case '<': ++m; break;
+ case '=': if (*++m == '>') ++m; break;
+ default: break;
+ }
+ break;
+
+ case '>':
+ switch (*++m) {
+ case '>': case '=': ++m; break;
+ }
+ break;
+
+ case '=':
+ switch (*++m) {
+ case '~': ++m; break;
+ case '=': if (*++m == '=') ++m; break;
+ default: return Qfalse;
+ }
+ break;
+
+ case '*':
+ if (*++m == '*') ++m;
+ break;
+
+ case '+': case '-':
+ if (*++m == '@') ++m;
+ break;
+
+ case '|': case '^': case '&': case '/': case '%': case '~': case '`':
+ ++m;
+ break;
+
+ case '[':
+ if (*++m != ']') return Qfalse;
+ if (*++m == '=') ++m;
+ break;
+
+ case '!':
+ switch (*++m) {
+ case '\0': return Qtrue;
+ case '=': case '~': ++m; break;
+ default: return Qfalse;
+ }
+ break;
+
+ default:
+ localid = !rb_enc_isupper(*m, enc);
+ id:
+ if (m >= e || (*m != '_' && !rb_enc_isalpha(*m, enc) && ISASCII(*m)))
+ return Qfalse;
+ while (m < e && is_identchar(m, e, enc)) m += rb_enc_mbclen(m, e, enc);
+ if (localid) {
+ switch (*m) {
+ case '!': case '?': case '=': ++m;
+ }
+ }
+ break;
+ }
+ return *m ? Qfalse : Qtrue;
+}
+
+static ID
+register_symid(ID id, const char *name, long len, rb_encoding *enc)
+{
+ VALUE str = rb_enc_str_new(name, len, enc);
+ OBJ_FREEZE(str);
+ st_add_direct(global_symbols.sym_id, (st_data_t)str, id);
+ st_add_direct(global_symbols.id_str, id, (st_data_t)str);
+ return id;
+}
+
+ID
+rb_intern3(const char *name, long len, rb_encoding *enc)
+{
+ const char *m = name;
+ const char *e = m + len;
+ unsigned char c;
+ VALUE str;
+ ID id;
+ int last;
+ int mb;
+ struct RString fake_str;
+ fake_str.basic.flags = T_STRING|RSTRING_NOEMBED|FL_FREEZE;
+ fake_str.basic.klass = rb_cString;
+ fake_str.as.heap.len = len;
+ fake_str.as.heap.ptr = (char *)name;
+ fake_str.as.heap.aux.capa = len;
+ str = (VALUE)&fake_str;
+ rb_enc_associate(str, enc);
+
+ if (st_lookup(global_symbols.sym_id, str, (st_data_t *)&id))
+ return id;
+
+ if (rb_cString && !rb_enc_asciicompat(enc)) {
+ id = ID_JUNK;
+ goto new_id;
+ }
+ last = len-1;
+ id = 0;
+ switch (*m) {
+ case '$':
+ id |= ID_GLOBAL;
+ if ((mb = is_special_global_name(++m, e, enc)) != 0) {
+ if (!--mb) enc = rb_ascii8bit_encoding();
+ goto new_id;
+ }
+ break;
+ case '@':
+ if (m[1] == '@') {
+ m++;
+ id |= ID_CLASS;
+ }
+ else {
+ id |= ID_INSTANCE;
+ }
+ m++;
+ break;
+ default:
+ c = m[0];
+ if (c != '_' && rb_enc_isascii(c, enc) && rb_enc_ispunct(c, enc)) {
+ /* operators */
+ int i;
+
+ if (len == 1) {
+ id = c;
+ goto id_register;
+ }
+ for (i = 0; i < op_tbl_count; i++) {
+ if (*op_tbl[i].name == *m &&
+ strcmp(op_tbl[i].name, m) == 0) {
+ id = op_tbl[i].token;
+ goto id_register;
+ }
+ }
+ }
+
+ if (m[last] == '=') {
+ /* attribute assignment */
+ id = rb_intern3(name, last, enc);
+ if (id > tLAST_TOKEN && !is_attrset_id(id)) {
+ enc = rb_enc_get(rb_id2str(id));
+ id = rb_id_attrset(id);
+ goto id_register;
+ }
+ id = ID_ATTRSET;
+ }
+ else if (rb_enc_isupper(m[0], enc)) {
+ id = ID_CONST;
+ }
+ else {
+ id = ID_LOCAL;
+ }
+ break;
+ }
+ mb = 0;
+ if (!rb_enc_isdigit(*m, enc)) {
+ while (m <= name + last && is_identchar(m, e, enc)) {
+ if (ISASCII(*m)) {
+ m++;
+ }
+ else {
+ mb = 1;
+ m += rb_enc_mbclen(m, e, enc);
+ }
+ }
+ }
+ if (m - name < len) id = ID_JUNK;
+ if (enc != rb_usascii_encoding()) {
+ /*
+ * this clause makes sense only when called from other than
+ * rb_intern_str() taking care of code-range.
+ */
+ if (!mb) {
+ for (; m <= name + len; ++m) {
+ if (!ISASCII(*m)) goto mbstr;
+ }
+ enc = rb_usascii_encoding();
+ }
+ mbstr:;
+ }
+ new_id:
+ id |= ++global_symbols.last_id << ID_SCOPE_SHIFT;
+ id_register:
+ return register_symid(id, name, len, enc);
+}
+
+ID
+rb_intern2(const char *name, long len)
+{
+ return rb_intern3(name, len, rb_usascii_encoding());
+}
+
+#undef rb_intern
+ID
+rb_intern(const char *name)
+{
+ return rb_intern2(name, strlen(name));
+}
+
+ID
+rb_intern_str(VALUE str)
+{
+ rb_encoding *enc;
+ ID id;
+
+ if (rb_enc_str_coderange(str) == ENC_CODERANGE_7BIT) {
+ enc = rb_usascii_encoding();
+ }
+ else {
+ enc = rb_enc_get(str);
+ }
+ id = rb_intern3(RSTRING_PTR(str), RSTRING_LEN(str), enc);
+ RB_GC_GUARD(str);
+ return id;
+}
+
+VALUE
+rb_id2str(ID id)
+{
+ st_data_t data;
+
+ if (id < tLAST_TOKEN) {
+ int i = 0;
+
+ if (rb_ispunct(id)) {
+ VALUE str = global_symbols.op_sym[i = (int)id];
+ if (!str) {
+ char name[2];
+ name[0] = (char)id;
+ name[1] = 0;
+ str = rb_usascii_str_new(name, 1);
+ OBJ_FREEZE(str);
+ global_symbols.op_sym[i] = str;
+ }
+ return str;
+ }
+ for (i = 0; i < op_tbl_count; i++) {
+ if (op_tbl[i].token == id) {
+ VALUE str = global_symbols.op_sym[i];
+ if (!str) {
+ str = rb_usascii_str_new2(op_tbl[i].name);
+ OBJ_FREEZE(str);
+ global_symbols.op_sym[i] = str;
+ }
+ return str;
+ }
+ }
+ }
+
+ if (st_lookup(global_symbols.id_str, id, &data)) {
+ VALUE str = (VALUE)data;
+ if (RBASIC(str)->klass == 0)
+ RBASIC(str)->klass = rb_cString;
+ return str;
+ }
+
+ if (is_attrset_id(id)) {
+ ID id2 = (id & ~ID_SCOPE_MASK) | ID_LOCAL;
+ VALUE str;
+
+ while (!(str = rb_id2str(id2))) {
+ if (!is_local_id(id2)) return 0;
+ id2 = (id & ~ID_SCOPE_MASK) | ID_CONST;
+ }
+ str = rb_str_dup(str);
+ rb_str_cat(str, "=", 1);
+ rb_intern_str(str);
+ if (st_lookup(global_symbols.id_str, id, &data)) {
+ VALUE str = (VALUE)data;
+ if (RBASIC(str)->klass == 0)
+ RBASIC(str)->klass = rb_cString;
+ return str;
+ }
+ }
+ return 0;
+}
+
+const char *
+rb_id2name(ID id)
+{
+ VALUE str = rb_id2str(id);
+
+ if (!str) return 0;
+ return RSTRING_PTR(str);
+}
+
+static int
+symbols_i(VALUE sym, ID value, VALUE ary)
+{
+ rb_ary_push(ary, ID2SYM(value));
+ return ST_CONTINUE;
+}
+
+/*
+ * call-seq:
+ * Symbol.all_symbols => array
+ *
+ * Returns an array of all the symbols currently in Ruby's symbol
+ * table.
+ *
+ * Symbol.all_symbols.size #=> 903
+ * Symbol.all_symbols[1,20] #=> [:floor, :ARGV, :Binding, :symlink,
+ * :chown, :EOFError, :$;, :String,
+ * :LOCK_SH, :"setuid?", :$<,
+ * :default_proc, :compact, :extend,
+ * :Tms, :getwd, :$=, :ThreadGroup,
+ * :wait2, :$>]
+ */
+
+VALUE
+rb_sym_all_symbols(void)
+{
+ VALUE ary = rb_ary_new2(global_symbols.sym_id->num_entries);
+
+ st_foreach(global_symbols.sym_id, symbols_i, ary);
+ return ary;
+}
+
+int
+rb_is_const_id(ID id)
+{
+ if (is_const_id(id)) return Qtrue;
+ return Qfalse;
+}
+
+int
+rb_is_class_id(ID id)
+{
+ if (is_class_id(id)) return Qtrue;
+ return Qfalse;
+}
+
+int
+rb_is_instance_id(ID id)
+{
+ if (is_instance_id(id)) return Qtrue;
+ return Qfalse;
+}
+
+int
+rb_is_local_id(ID id)
+{
+ if (is_local_id(id)) return Qtrue;
+ return Qfalse;
+}
+
+int
+rb_is_junk_id(ID id)
+{
+ if (is_junk_id(id)) return Qtrue;
+ return Qfalse;
+}
+
+#endif /* !RIPPER */
+
+static void
+parser_initialize(struct parser_params *parser)
+{
+ parser->eofp = Qfalse;
+
+ parser->parser_lex_strterm = 0;
+ parser->parser_cond_stack = 0;
+ parser->parser_cmdarg_stack = 0;
+ parser->parser_class_nest = 0;
+ parser->parser_paren_nest = 0;
+ parser->parser_lpar_beg = 0;
+ parser->parser_in_single = 0;
+ parser->parser_in_def = 0;
+ parser->parser_in_defined = 0;
+ parser->parser_compile_for_eval = 0;
+ parser->parser_cur_mid = 0;
+ parser->parser_tokenbuf = NULL;
+ parser->parser_tokidx = 0;
+ parser->parser_toksiz = 0;
+ parser->parser_heredoc_end = 0;
+ parser->parser_command_start = Qtrue;
+ parser->parser_deferred_nodes = 0;
+ parser->parser_lex_pbeg = 0;
+ parser->parser_lex_p = 0;
+ parser->parser_lex_pend = 0;
+ parser->parser_lvtbl = 0;
+ parser->parser_ruby__end__seen = 0;
+ parser->parser_ruby_sourcefile = 0;
+#ifndef RIPPER
+ parser->is_ripper = 0;
+ parser->parser_eval_tree_begin = 0;
+ parser->parser_eval_tree = 0;
+#else
+ parser->is_ripper = 1;
+ parser->parser_ruby_sourcefile_string = Qnil;
+ parser->delayed = Qnil;
+
+ parser->result = Qnil;
+ parser->parsing_thread = Qnil;
+ parser->toplevel_p = Qtrue;
+#endif
+#ifdef YYMALLOC
+ parser->heap = NULL;
+#endif
+ parser->enc = rb_usascii_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 *p = (struct parser_params*)ptr;
+
+ rb_gc_mark((VALUE)p->parser_lex_strterm);
+ rb_gc_mark((VALUE)p->parser_deferred_nodes);
+ rb_gc_mark(p->parser_lex_input);
+ rb_gc_mark(p->parser_lex_lastline);
+ rb_gc_mark(p->parser_lex_nextline);
+#ifndef RIPPER
+ rb_gc_mark((VALUE)p->parser_eval_tree_begin) ;
+ rb_gc_mark((VALUE)p->parser_eval_tree) ;
+ rb_gc_mark(p->debug_lines);
+#else
+ rb_gc_mark(p->parser_ruby_sourcefile_string);
+ rb_gc_mark(p->delayed);
+ rb_gc_mark(p->value);
+ rb_gc_mark(p->result);
+ rb_gc_mark(p->parsing_thread);
+#endif
+#ifdef YYMALLOC
+ rb_gc_mark((VALUE)p->heap);
+#endif
+}
+
+static void
+parser_free(void *ptr)
+{
+ struct parser_params *p = (struct parser_params*)ptr;
+ struct local_vars *local, *prev;
+
+ if (p->parser_tokenbuf) {
+ xfree(p->parser_tokenbuf);
+ }
+ for (local = p->parser_lvtbl; local; local = prev) {
+ if (local->vars) xfree(local->vars);
+ prev = local->prev;
+ xfree(local);
+ }
+#ifndef RIPPER
+ xfree(p->parser_ruby_sourcefile);
+#endif
+ xfree(p);
+}
+
+VALUE rb_parser_get_yydebug(VALUE);
+VALUE rb_parser_set_yydebug(VALUE, VALUE);
+
+#ifndef RIPPER
+static struct parser_params *
+parser_new(void)
+{
+ struct parser_params *p;
+
+ p = ALLOC_N(struct parser_params, 1);
+ MEMZERO(p, struct parser_params, 1);
+ parser_initialize(p);
+ return p;
+}
+
+VALUE
+rb_parser_new(void)
+{
+ struct parser_params *p = parser_new();
+
+ return Data_Wrap_Struct(0, parser_mark, parser_free, p);
+}
+
+/*
+ * call-seq:
+ * ripper#end_seen? -> Boolean
+ *
+ * Return if parsed source ended by +\_\_END\_\_+.
+ * This number starts from 1.
+ */
+VALUE
+rb_parser_end_seen_p(VALUE vparser)
+{
+ struct parser_params *parser;
+
+ Data_Get_Struct(vparser, struct parser_params, 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;
+
+ Data_Get_Struct(vparser, struct parser_params, parser);
+ return rb_enc_from_encoding(parser->enc);
+}
+
+/*
+ * call-seq:
+ * ripper.yydebug -> true or false
+ *
+ * Get yydebug.
+ */
+VALUE
+rb_parser_get_yydebug(VALUE self)
+{
+ struct parser_params *parser;
+
+ Data_Get_Struct(self, struct parser_params, 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;
+
+ Data_Get_Struct(self, struct parser_params, parser);
+ yydebug = RTEST(flag);
+ return flag;
+}
+
+#ifdef YYMALLOC
+#define HEAPCNT(n, size) ((n) * (size) / sizeof(YYSTYPE))
+#define NEWHEAP() rb_node_newnode(NODE_ALLOCA, 0, (VALUE)parser->heap, 0)
+#define ADD2HEAP(n, c, p) ((parser->heap = (n))->u1.node = (p), \
+ (n)->u3.cnt = (c), (p))
+
+void *
+rb_parser_malloc(struct parser_params *parser, size_t size)
+{
+ size_t cnt = HEAPCNT(1, size);
+ NODE *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);
+ NODE *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)
+{
+ NODE *n;
+ size_t cnt = HEAPCNT(1, size);
+
+ if (ptr && (n = parser->heap) != NULL) {
+ do {
+ if (n->u1.node == ptr) {
+ n->u1.node = ptr = xrealloc(ptr, size);
+ if (n->u3.cnt) n->u3.cnt = cnt;
+ return ptr;
+ }
+ } while ((n = n->u2.node) != NULL);
+ }
+ n = NEWHEAP();
+ ptr = xrealloc(ptr, size);
+ return ADD2HEAP(n, cnt, ptr);
+}
+
+void
+rb_parser_free(struct parser_params *parser, void *ptr)
+{
+ NODE **prev = &parser->heap, *n;
+
+ while ((n = *prev) != NULL) {
+ if (n->u1.node == ptr) {
+ *prev = n->u2.node;
+ rb_gc_force_recycle((VALUE)n);
+ break;
+ }
+ prev = &n->u2.node;
+ }
+ xfree(ptr);
+}
+#endif
+#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 (TYPE(x)) {
+ case T_STRING:
+ case T_OBJECT:
+ case T_ARRAY:
+ case T_BIGNUM:
+ case T_FLOAT:
+ return x;
+ case T_NODE:
+ rb_raise(rb_eArgError, "NODE given: %p", x);
+ default:
+ rb_raise(rb_eArgError, "wrong type of ruby object: %p (%s)",
+ x, rb_obj_classname(x));
+ }
+ return x;
+}
+#endif
+
+#define validate(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 const struct kw_assoc {
+ ID id;
+ const char *name;
+} keyword_to_name[] = {
+ {keyword_class, "class"},
+ {keyword_module, "module"},
+ {keyword_def, "def"},
+ {keyword_undef, "undef"},
+ {keyword_begin, "begin"},
+ {keyword_rescue, "rescue"},
+ {keyword_ensure, "ensure"},
+ {keyword_end, "end"},
+ {keyword_if, "if"},
+ {keyword_unless, "unless"},
+ {keyword_then, "then"},
+ {keyword_elsif, "elsif"},
+ {keyword_else, "else"},
+ {keyword_case, "case"},
+ {keyword_when, "when"},
+ {keyword_while, "while"},
+ {keyword_until, "until"},
+ {keyword_for, "for"},
+ {keyword_break, "break"},
+ {keyword_next, "next"},
+ {keyword_redo, "redo"},
+ {keyword_retry, "retry"},
+ {keyword_in, "in"},
+ {keyword_do, "do"},
+ {keyword_do_cond, "do"},
+ {keyword_do_block, "do"},
+ {keyword_return, "return"},
+ {keyword_yield, "yield"},
+ {keyword_super, "super"},
+ {keyword_self, "self"},
+ {keyword_nil, "nil"},
+ {keyword_true, "true"},
+ {keyword_false, "false"},
+ {keyword_and, "and"},
+ {keyword_or, "or"},
+ {keyword_not, "not"},
+ {modifier_if, "if"},
+ {modifier_unless, "unless"},
+ {modifier_while, "while"},
+ {modifier_until, "until"},
+ {modifier_rescue, "rescue"},
+ {keyword_alias, "alias"},
+ {keyword_defined, "defined?"},
+ {keyword_BEGIN, "BEGIN"},
+ {keyword_END, "END"},
+ {keyword__LINE__, "__LINE__"},
+ {keyword__FILE__, "__FILE__"},
+ {keyword__ENCODING__, "__ENCODING__"},
+ {0, NULL}
+};
+
+static const char*
+keyword_id_to_str(ID id)
+{
+ const struct kw_assoc *a;
+
+ for (a = keyword_to_name; a->id; a++) {
+ if (a->id == id)
+ return a->name;
+ }
+ return NULL;
+}
+
+#undef ripper_id2sym
+static VALUE
+ripper_id2sym(ID id)
+{
+ const char *name;
+ char buf[8];
+
+ if (id <= 256) {
+ buf[0] = id;
+ buf[1] = '\0';
+ return ID2SYM(rb_intern(buf));
+ }
+ if ((name = keyword_id_to_str(id))) {
+ return ID2SYM(rb_intern(name));
+ }
+ switch (id) {
+ case tOROP:
+ name = "||";
+ break;
+ case tANDOP:
+ name = "&&";
+ break;
+ default:
+ name = rb_id2name(id);
+ if (!name) {
+ rb_bug("cannot convert ID to string: %ld", (unsigned long)id);
+ }
+ break;
+ }
+ return ID2SYM(rb_intern(name));
+}
+
+static VALUE
+ripper_intern(const char *s)
+{
+ return ID2SYM(rb_intern(s));
+}
+
+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);
+}
+
+static void
+ripper_warn0(struct parser_params *parser, const char *fmt)
+{
+ rb_funcall(parser->value, rb_intern("warn"), 1, STR_NEW2(fmt));
+}
+
+static void
+ripper_warnI(struct parser_params *parser, const char *fmt, int a)
+{
+ rb_funcall(parser->value, rb_intern("warn"), 2,
+ STR_NEW2(fmt), INT2NUM(a));
+}
+
+#if 0
+static void
+ripper_warnS(struct parser_params *parser, const char *fmt, const char *str)
+{
+ rb_funcall(parser->value, rb_intern("warn"), 2,
+ STR_NEW2(fmt), STR_NEW2(str));
+}
+#endif
+
+static void
+ripper_warning0(struct parser_params *parser, const char *fmt)
+{
+ rb_funcall(parser->value, rb_intern("warning"), 1, STR_NEW2(fmt));
+}
+
+static void
+ripper_warningS(struct parser_params *parser, const char *fmt, const char *str)
+{
+ rb_funcall(parser->value, rb_intern("warning"), 2,
+ STR_NEW2(fmt), STR_NEW2(str));
+}
+
+static VALUE
+ripper_lex_get_generic(struct parser_params *parser, VALUE src)
+{
+ return rb_funcall(src, ripper_id_gets, 0);
+}
+
+static VALUE
+ripper_s_allocate(VALUE klass)
+{
+ struct parser_params *p;
+ VALUE self;
+
+ p = ALLOC_N(struct parser_params, 1);
+ MEMZERO(p, struct parser_params, 1);
+ self = Data_Wrap_Struct(klass, parser_mark, parser_free, p);
+ p->value = self;
+ return self;
+}
+
+#define ripper_initialized_p(r) ((r)->parser_lex_input != 0)
+
+/*
+ * call-seq:
+ * Ripper.new(src, filename="(ripper)", lineno=1) -> ripper
+ *
+ * Create a new Ripper object.
+ * _src_ must be a String, a 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;
+
+ Data_Get_Struct(self, struct parser_params, parser);
+ rb_scan_args(argc, argv, "12", &src, &fname, &lineno);
+ if (rb_obj_respond_to(src, ripper_id_gets, 0)) {
+ parser->parser_lex_gets = ripper_lex_get_generic;
+ }
+ else {
+ StringValue(src);
+ parser->parser_lex_gets = lex_get_str;
+ }
+ parser->parser_lex_input = src;
+ parser->eofp = Qfalse;
+ if (NIL_P(fname)) {
+ fname = STR_NEW2("(ripper)");
+ }
+ else {
+ StringValue(fname);
+ }
+ parser_initialize(parser);
+
+ parser->parser_ruby_sourcefile_string = fname;
+ parser->parser_ruby_sourcefile = RSTRING_PTR(fname);
+ parser->parser_ruby_sourceline = NIL_P(lineno) ? 0 : NUM2INT(lineno) - 1;
+
+ return Qnil;
+}
+
+extern VALUE rb_thread_pass(void);
+
+struct ripper_args {
+ struct parser_params *parser;
+ int argc;
+ VALUE *argv;
+};
+
+static VALUE
+ripper_parse0(VALUE parser_v)
+{
+ struct parser_params *parser;
+
+ Data_Get_Struct(parser_v, struct parser_params, parser);
+ parser_prepare(parser);
+ ripper_yyparse((void*)parser);
+ return parser->result;
+}
+
+static VALUE
+ripper_ensure(VALUE parser_v)
+{
+ struct parser_params *parser;
+
+ Data_Get_Struct(parser_v, struct parser_params, 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;
+
+ Data_Get_Struct(self, struct parser_params, 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;
+
+ Data_Get_Struct(self, struct parser_params, 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 - parser->parser_lex_pbeg;
+ return LONG2NUM(col);
+}
+
+/*
+ * 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;
+
+ Data_Get_Struct(self, struct parser_params, 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(parser->parser_ruby_sourceline);
+}
+
+#ifdef RIPPER_DEBUG
+/* :nodoc: */
+static VALUE
+ripper_assert_Qundef(VALUE self, VALUE obj, VALUE msg)
+{
+ StringValue(msg);
+ if (obj == Qundef) {
+ rb_raise(rb_eArgError, "%s", RSTRING_PTR(msg));
+ }
+ return Qnil;
+}
+
+/* :nodoc: */
+static VALUE
+ripper_value(VALUE self, VALUE obj)
+{
+ return ULONG2NUM(obj);
+}
+#endif
+
+void
+Init_ripper(void)
+{
+ VALUE Ripper;
+
+ Ripper = rb_define_class("Ripper", rb_cObject);
+ 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, "lineno", ripper_lineno, 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);
+#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
+
+ ripper_id_gets = rb_intern("gets");
+ ripper_init_eventids1(Ripper);
+ ripper_init_eventids2(Ripper);
+ /* ensure existing in symbol table */
+ rb_intern("||");
+ rb_intern("&&");
+}
+#endif /* RIPPER */
generated by cgit v1.2.3 (git 2.25.1) at 2024-05-17 21:03:21 +0000