summaryrefslogtreecommitdiff
path: root/trunk/parse.y
diff options
context:
space:
mode:
Diffstat (limited to 'trunk/parse.y')
-rw-r--r--trunk/parse.y10013
1 files changed, 0 insertions, 10013 deletions
diff --git a/trunk/parse.y b/trunk/parse.y
deleted file mode 100644
index 10e0c2c128..0000000000
--- a/trunk/parse.y
+++ /dev/null
@@ -1,10013 +0,0 @@
-/**********************************************************************
-
- 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 2024-04-16 10:43:04 +0000