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-rw-r--r--ruby_1_8_6/parse.y6368
1 files changed, 0 insertions, 6368 deletions
diff --git a/ruby_1_8_6/parse.y b/ruby_1_8_6/parse.y
deleted file mode 100644
index 0dde920b2b..0000000000
--- a/ruby_1_8_6/parse.y
+++ /dev/null
@@ -1,6368 +0,0 @@
-/**********************************************************************
-
- parse.y -
-
- $Author$
- $Date$
- created at: Fri May 28 18:02:42 JST 1993
-
- Copyright (C) 1993-2003 Yukihiro Matsumoto
-
-**********************************************************************/
-
-%{
-
-#define YYDEBUG 1
-#define YYERROR_VERBOSE 1
-#ifndef YYSTACK_USE_ALLOCA
-#define YYSTACK_USE_ALLOCA 0
-#endif
-
-#include "ruby.h"
-#include "env.h"
-#include "intern.h"
-#include "node.h"
-#include "st.h"
-#include <stdio.h>
-#include <errno.h>
-#include <ctype.h>
-
-#define YYMALLOC rb_parser_malloc
-#define YYREALLOC rb_parser_realloc
-#define YYCALLOC rb_parser_calloc
-#define YYFREE rb_parser_free
-#define malloc YYMALLOC
-#define realloc YYREALLOC
-#define calloc YYCALLOC
-#define free YYFREE
-static void *rb_parser_malloc _((size_t));
-static void *rb_parser_realloc _((void *, size_t));
-static void *rb_parser_calloc _((size_t, size_t));
-static void rb_parser_free _((void *));
-
-#define yyparse ruby_yyparse
-#define yylex ruby_yylex
-#define yyerror ruby_yyerror
-#define yylval ruby_yylval
-#define yychar ruby_yychar
-#define yydebug ruby_yydebug
-
-#define ID_SCOPE_SHIFT 3
-#define ID_SCOPE_MASK 0x07
-#define ID_LOCAL 0x01
-#define ID_INSTANCE 0x02
-#define ID_GLOBAL 0x03
-#define ID_ATTRSET 0x04
-#define ID_CONST 0x05
-#define ID_CLASS 0x06
-#define ID_JUNK 0x07
-#define ID_INTERNAL ID_JUNK
-
-#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))
-
-NODE *ruby_eval_tree_begin = 0;
-NODE *ruby_eval_tree = 0;
-
-char *ruby_sourcefile; /* current source file */
-int ruby_sourceline; /* current line no. */
-
-static int yylex();
-static int yyerror();
-
-static enum lex_state {
- EXPR_BEG, /* ignore newline, +/- is a sign. */
- EXPR_END, /* newline significant, +/- is an operator. */
- EXPR_ARG, /* newline significant, +/- is an operator. */
- EXPR_CMDARG, /* newline significant, +/- is an operator. */
- EXPR_ENDARG, /* newline significant, +/- is an operator. */
- EXPR_MID, /* newline significant, +/- is an operator. */
- EXPR_FNAME, /* ignore newline, no reserved words. */
- EXPR_DOT, /* right after `.' or `::', no reserved words. */
- EXPR_CLASS, /* immediate after `class', no here document. */
-} lex_state;
-static NODE *lex_strterm;
-
-#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 >>= 1)
-#define BITSTACK_LEXPOP(stack) (stack = (stack >> 1) | (stack & 1))
-#define BITSTACK_SET_P(stack) (stack&1)
-
-static stack_type cond_stack = 0;
-#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)
-
-static stack_type cmdarg_stack = 0;
-#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)
-
-static int class_nest = 0;
-static int in_single = 0;
-static int in_def = 0;
-static int compile_for_eval = 0;
-static ID cur_mid = 0;
-static int command_start = Qtrue;
-
-static NODE *cond();
-static NODE *logop();
-static int cond_negative();
-
-static NODE *newline_node();
-static void fixpos();
-
-static int value_expr0();
-static void void_expr0();
-static void void_stmts();
-static NODE *remove_begin();
-#define value_expr(node) value_expr0((node) = remove_begin(node))
-#define void_expr(node) void_expr0((node) = remove_begin(node))
-
-static NODE *block_append();
-static NODE *list_append();
-static NODE *list_concat();
-static NODE *arg_concat();
-static NODE *arg_prepend();
-static NODE *literal_concat();
-static NODE *new_evstr();
-static NODE *evstr2dstr();
-static NODE *call_op();
-static int in_defined = 0;
-
-static NODE *negate_lit();
-static NODE *ret_args();
-static NODE *arg_blk_pass();
-static NODE *new_call();
-static NODE *new_fcall();
-static NODE *new_super();
-static NODE *new_yield();
-
-static NODE *gettable();
-static NODE *assignable();
-static NODE *aryset();
-static NODE *attrset();
-static void rb_backref_error();
-static NODE *node_assign();
-
-static NODE *match_gen();
-static void local_push();
-static void local_pop();
-static int local_append();
-static int local_cnt();
-static int local_id();
-static ID *local_tbl();
-static ID internal_id();
-
-static struct RVarmap *dyna_push();
-static void dyna_pop();
-static int dyna_in_block();
-static NODE *dyna_init();
-
-static void top_local_init();
-static void top_local_setup();
-
-#define RE_OPTION_ONCE 0x80
-
-#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.id
-
-/* 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
-
-%}
-
-%union {
- NODE *node;
- ID id;
- int num;
- struct RVarmap *vars;
-}
-
-%token kCLASS
- kMODULE
- kDEF
- kUNDEF
- kBEGIN
- kRESCUE
- kENSURE
- kEND
- kIF
- kUNLESS
- kTHEN
- kELSIF
- kELSE
- kCASE
- kWHEN
- kWHILE
- kUNTIL
- kFOR
- kBREAK
- kNEXT
- kREDO
- kRETRY
- kIN
- kDO
- kDO_COND
- kDO_BLOCK
- kRETURN
- kYIELD
- kSUPER
- kSELF
- kNIL
- kTRUE
- kFALSE
- kAND
- kOR
- kNOT
- kIF_MOD
- kUNLESS_MOD
- kWHILE_MOD
- kUNTIL_MOD
- kRESCUE_MOD
- kALIAS
- kDEFINED
- klBEGIN
- klEND
- k__LINE__
- k__FILE__
-
-%token <id> tIDENTIFIER tFID tGVAR tIVAR tCONSTANT tCVAR
-%token <node> tINTEGER tFLOAT tSTRING_CONTENT
-%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 when_args call_args call_args2 open_args 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_optarg f_opt f_rest_arg f_block_arg opt_f_block_arg
-%type <node> assoc_list assocs assoc undef_list backref string_dvar
-%type <node> block_var opt_block_var brace_block cmd_brace_block do_block lhs none fitem
-%type <node> mlhs mlhs_head mlhs_basic mlhs_entry mlhs_item mlhs_node
-%type <id> fsym variable sym symbol operation operation2 operation3
-%type <id> cname fname op
-%type <num> f_norm_arg f_arg
-%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 tSYMBEG tSTRING_BEG tXSTRING_BEG tREGEXP_BEG tWORDS_BEG tQWORDS_BEG
-%token tSTRING_DBEG tSTRING_DVAR tSTRING_END
-
-/*
- * precedence table
- */
-
-%nonassoc tLOWEST
-%nonassoc tLBRACE_ARG
-
-%nonassoc kIF_MOD kUNLESS_MOD kWHILE_MOD kUNTIL_MOD
-%left kOR kAND
-%right kNOT
-%nonassoc kDEFINED
-%right '=' tOP_ASGN
-%left kRESCUE_MOD
-%right '?' ':'
-%nonassoc tDOT2 tDOT3
-%left tOROP
-%left tANDOP
-%nonassoc tCMP tEQ tEQQ tNEQ tMATCH tNMATCH
-%left '>' tGEQ '<' tLEQ
-%left '|' '^'
-%left '&'
-%left tLSHFT tRSHFT
-%left '+' '-'
-%left '*' '/' '%'
-%right tUMINUS_NUM tUMINUS
-%right tPOW
-%right '!' '~' tUPLUS
-
-%token tLAST_TOKEN
-
-%%
-program : {
- lex_state = EXPR_BEG;
- top_local_init();
- if (ruby_class == rb_cObject) class_nest = 0;
- else class_nest = 1;
- }
- 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 = block_append(ruby_eval_tree, $2);
- top_local_setup();
- class_nest = 0;
- }
- ;
-
-bodystmt : compstmt
- opt_rescue
- opt_else
- opt_ensure
- {
- $$ = $1;
- if ($2) {
- $$ = NEW_RESCUE($1, $2, $3);
- }
- else if ($3) {
- rb_warn("else without rescue is useless");
- $$ = block_append($$, $3);
- }
- if ($4) {
- $$ = NEW_ENSURE($$, $4);
- }
- fixpos($$, $1);
- }
- ;
-
-compstmt : stmts opt_terms
- {
- void_stmts($1);
- $$ = $1;
- }
- ;
-
-stmts : none
- | stmt
- {
- $$ = newline_node($1);
- }
- | stmts terms stmt
- {
- $$ = block_append($1, newline_node($3));
- }
- | error stmt
- {
- $$ = remove_begin($2);
- }
- ;
-
-stmt : kALIAS fitem {lex_state = EXPR_FNAME;} fitem
- {
- $$ = NEW_ALIAS($2, $4);
- }
- | kALIAS tGVAR tGVAR
- {
- $$ = NEW_VALIAS($2, $3);
- }
- | kALIAS tGVAR tBACK_REF
- {
- char buf[3];
-
- sprintf(buf, "$%c", (char)$3->nd_nth);
- $$ = NEW_VALIAS($2, rb_intern(buf));
- }
- | kALIAS tGVAR tNTH_REF
- {
- yyerror("can't make alias for the number variables");
- $$ = 0;
- }
- | kUNDEF undef_list
- {
- $$ = $2;
- }
- | stmt kIF_MOD expr_value
- {
- $$ = NEW_IF(cond($3), remove_begin($1), 0);
- fixpos($$, $3);
- if (cond_negative(&$$->nd_cond)) {
- $$->nd_else = $$->nd_body;
- $$->nd_body = 0;
- }
- }
- | stmt kUNLESS_MOD expr_value
- {
- $$ = NEW_UNLESS(cond($3), remove_begin($1), 0);
- fixpos($$, $3);
- if (cond_negative(&$$->nd_cond)) {
- $$->nd_body = $$->nd_else;
- $$->nd_else = 0;
- }
- }
- | stmt kWHILE_MOD expr_value
- {
- if ($1 && nd_type($1) == NODE_BEGIN) {
- $$ = NEW_WHILE(cond($3), $1->nd_body, 0);
- }
- else {
- $$ = NEW_WHILE(cond($3), $1, 1);
- }
- if (cond_negative(&$$->nd_cond)) {
- nd_set_type($$, NODE_UNTIL);
- }
- }
- | stmt kUNTIL_MOD expr_value
- {
- if ($1 && nd_type($1) == NODE_BEGIN) {
- $$ = NEW_UNTIL(cond($3), $1->nd_body, 0);
- }
- else {
- $$ = NEW_UNTIL(cond($3), $1, 1);
- }
- if (cond_negative(&$$->nd_cond)) {
- nd_set_type($$, NODE_WHILE);
- }
- }
- | stmt kRESCUE_MOD stmt
- {
- NODE *resq = NEW_RESBODY(0, remove_begin($3), 0);
- $$ = NEW_RESCUE(remove_begin($1), resq, 0);
- }
- | klBEGIN
- {
- if (in_def || in_single) {
- yyerror("BEGIN in method");
- }
- local_push(0);
- }
- '{' compstmt '}'
- {
- ruby_eval_tree_begin = block_append(ruby_eval_tree_begin,
- NEW_PREEXE($4));
- local_pop();
- $$ = 0;
- }
- | klEND '{' compstmt '}'
- {
- if (in_def || in_single) {
- rb_warn("END in method; use at_exit");
- }
-
- $$ = NEW_ITER(0, NEW_POSTEXE(), $3);
- }
- | lhs '=' command_call
- {
- $$ = node_assign($1, $3);
- }
- | mlhs '=' command_call
- {
- value_expr($3);
- $1->nd_value = ($1->nd_head) ? NEW_TO_ARY($3) : NEW_ARRAY($3);
- $$ = $1;
- }
- | var_lhs tOP_ASGN command_call
- {
- value_expr($3);
- if ($1) {
- ID vid = $1->nd_vid;
- if ($2 == tOROP) {
- $1->nd_value = $3;
- $$ = 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 = call_op(gettable(vid),$2,1,$3);
- }
- }
- else {
- $$ = 0;
- }
- }
- | primary_value '[' aref_args ']' tOP_ASGN command_call
- {
- NODE *args;
-
- value_expr($6);
- if (!$3) $3 = NEW_ZARRAY();
- args = arg_concat($6, $3);
- if ($5 == tOROP) {
- $5 = 0;
- }
- else if ($5 == tANDOP) {
- $5 = 1;
- }
- $$ = NEW_OP_ASGN1($1, $5, args);
- fixpos($$, $1);
- }
- | primary_value '.' tIDENTIFIER tOP_ASGN command_call
- {
- value_expr($5);
- if ($4 == tOROP) {
- $4 = 0;
- }
- else if ($4 == tANDOP) {
- $4 = 1;
- }
- $$ = NEW_OP_ASGN2($1, $3, $4, $5);
- fixpos($$, $1);
- }
- | primary_value '.' tCONSTANT tOP_ASGN command_call
- {
- value_expr($5);
- if ($4 == tOROP) {
- $4 = 0;
- }
- else if ($4 == tANDOP) {
- $4 = 1;
- }
- $$ = NEW_OP_ASGN2($1, $3, $4, $5);
- fixpos($$, $1);
- }
- | primary_value tCOLON2 tIDENTIFIER tOP_ASGN command_call
- {
- value_expr($5);
- if ($4 == tOROP) {
- $4 = 0;
- }
- else if ($4 == tANDOP) {
- $4 = 1;
- }
- $$ = NEW_OP_ASGN2($1, $3, $4, $5);
- fixpos($$, $1);
- }
- | backref tOP_ASGN command_call
- {
- rb_backref_error($1);
- $$ = 0;
- }
- | lhs '=' mrhs
- {
- $$ = node_assign($1, NEW_SVALUE($3));
- }
- | mlhs '=' arg_value
- {
- $1->nd_value = ($1->nd_head) ? NEW_TO_ARY($3) : NEW_ARRAY($3);
- $$ = $1;
- }
- | mlhs '=' mrhs
- {
- $1->nd_value = $3;
- $$ = $1;
- }
- | expr
- ;
-
-expr : command_call
- | expr kAND expr
- {
- $$ = logop(NODE_AND, $1, $3);
- }
- | expr kOR expr
- {
- $$ = logop(NODE_OR, $1, $3);
- }
- | kNOT expr
- {
- $$ = NEW_NOT(cond($2));
- }
- | '!' command_call
- {
- $$ = NEW_NOT(cond($2));
- }
- | arg
- ;
-
-expr_value : expr
- {
- value_expr($$);
- $$ = $1;
- }
- ;
-
-command_call : command
- | block_command
- | kRETURN call_args
- {
- $$ = NEW_RETURN(ret_args($2));
- }
- | kBREAK call_args
- {
- $$ = NEW_BREAK(ret_args($2));
- }
- | kNEXT call_args
- {
- $$ = NEW_NEXT(ret_args($2));
- }
- ;
-
-block_command : block_call
- | block_call '.' operation2 command_args
- {
- $$ = new_call($1, $3, $4);
- }
- | block_call tCOLON2 operation2 command_args
- {
- $$ = new_call($1, $3, $4);
- }
- ;
-
-cmd_brace_block : tLBRACE_ARG
- {
- $<vars>$ = dyna_push();
- $<num>1 = ruby_sourceline;
- }
- opt_block_var {$<vars>$ = ruby_dyna_vars;}
- compstmt
- '}'
- {
- $$ = NEW_ITER($3, 0, dyna_init($5, $<vars>4));
- nd_set_line($$, $<num>1);
- dyna_pop($<vars>2);
- }
- ;
-
-command : operation command_args %prec tLOWEST
- {
- $$ = new_fcall($1, $2);
- fixpos($$, $2);
- }
- | operation command_args cmd_brace_block
- {
- $$ = new_fcall($1, $2);
- if ($3) {
- if (nd_type($$) == NODE_BLOCK_PASS) {
- rb_compile_error("both block arg and actual block given");
- }
- $3->nd_iter = $$;
- $$ = $3;
- }
- fixpos($$, $2);
- }
- | primary_value '.' operation2 command_args %prec tLOWEST
- {
- $$ = new_call($1, $3, $4);
- fixpos($$, $1);
- }
- | primary_value '.' operation2 command_args cmd_brace_block
- {
- $$ = new_call($1, $3, $4);
- if ($5) {
- if (nd_type($$) == NODE_BLOCK_PASS) {
- rb_compile_error("both block arg and actual block given");
- }
- $5->nd_iter = $$;
- $$ = $5;
- }
- fixpos($$, $1);
- }
- | primary_value tCOLON2 operation2 command_args %prec tLOWEST
- {
- $$ = new_call($1, $3, $4);
- fixpos($$, $1);
- }
- | primary_value tCOLON2 operation2 command_args cmd_brace_block
- {
- $$ = new_call($1, $3, $4);
- if ($5) {
- if (nd_type($$) == NODE_BLOCK_PASS) {
- rb_compile_error("both block arg and actual block given");
- }
- $5->nd_iter = $$;
- $$ = $5;
- }
- fixpos($$, $1);
- }
- | kSUPER command_args
- {
- $$ = new_super($2);
- fixpos($$, $2);
- }
- | kYIELD command_args
- {
- $$ = new_yield($2);
- fixpos($$, $2);
- }
- ;
-
-mlhs : mlhs_basic
- | tLPAREN mlhs_entry ')'
- {
- $$ = $2;
- }
- ;
-
-mlhs_entry : mlhs_basic
- | tLPAREN mlhs_entry ')'
- {
- $$ = NEW_MASGN(NEW_LIST($2), 0);
- }
- ;
-
-mlhs_basic : mlhs_head
- {
- $$ = NEW_MASGN($1, 0);
- }
- | mlhs_head mlhs_item
- {
- $$ = NEW_MASGN(list_append($1,$2), 0);
- }
- | mlhs_head tSTAR mlhs_node
- {
- $$ = NEW_MASGN($1, $3);
- }
- | mlhs_head tSTAR
- {
- $$ = NEW_MASGN($1, -1);
- }
- | tSTAR mlhs_node
- {
- $$ = NEW_MASGN(0, $2);
- }
- | tSTAR
- {
- $$ = NEW_MASGN(0, -1);
- }
- ;
-
-mlhs_item : mlhs_node
- | tLPAREN mlhs_entry ')'
- {
- $$ = $2;
- }
- ;
-
-mlhs_head : mlhs_item ','
- {
- $$ = NEW_LIST($1);
- }
- | mlhs_head mlhs_item ','
- {
- $$ = list_append($1, $2);
- }
- ;
-
-mlhs_node : variable
- {
- $$ = assignable($1, 0);
- }
- | primary_value '[' aref_args ']'
- {
- $$ = aryset($1, $3);
- }
- | primary_value '.' tIDENTIFIER
- {
- $$ = attrset($1, $3);
- }
- | primary_value tCOLON2 tIDENTIFIER
- {
- $$ = attrset($1, $3);
- }
- | primary_value '.' tCONSTANT
- {
- $$ = attrset($1, $3);
- }
- | primary_value tCOLON2 tCONSTANT
- {
- if (in_def || in_single)
- yyerror("dynamic constant assignment");
- $$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
- }
- | tCOLON3 tCONSTANT
- {
- if (in_def || in_single)
- yyerror("dynamic constant assignment");
- $$ = NEW_CDECL(0, 0, NEW_COLON3($2));
- }
- | backref
- {
- rb_backref_error($1);
- $$ = 0;
- }
- ;
-
-lhs : variable
- {
- $$ = assignable($1, 0);
- }
- | primary_value '[' aref_args ']'
- {
- $$ = aryset($1, $3);
- }
- | primary_value '.' tIDENTIFIER
- {
- $$ = attrset($1, $3);
- }
- | primary_value tCOLON2 tIDENTIFIER
- {
- $$ = attrset($1, $3);
- }
- | primary_value '.' tCONSTANT
- {
- $$ = attrset($1, $3);
- }
- | primary_value tCOLON2 tCONSTANT
- {
- if (in_def || in_single)
- yyerror("dynamic constant assignment");
- $$ = NEW_CDECL(0, 0, NEW_COLON2($1, $3));
- }
- | tCOLON3 tCONSTANT
- {
- if (in_def || in_single)
- yyerror("dynamic constant assignment");
- $$ = NEW_CDECL(0, 0, NEW_COLON3($2));
- }
- | backref
- {
- rb_backref_error($1);
- $$ = 0;
- }
- ;
-
-cname : tIDENTIFIER
- {
- yyerror("class/module name must be CONSTANT");
- }
- | tCONSTANT
- ;
-
-cpath : tCOLON3 cname
- {
- $$ = NEW_COLON3($2);
- }
- | cname
- {
- $$ = NEW_COLON2(0, $$);
- }
- | primary_value tCOLON2 cname
- {
- $$ = NEW_COLON2($1, $3);
- }
- ;
-
-fname : tIDENTIFIER
- | tCONSTANT
- | tFID
- | op
- {
- lex_state = EXPR_END;
- $$ = $1;
- }
- | reswords
- {
- lex_state = EXPR_END;
- $$ = $<id>1;
- }
- ;
-
-fsym : fname
- | symbol
- ;
-
-fitem : fsym
- {
- $$ = NEW_LIT(ID2SYM($1));
- }
- | dsym
- ;
-
-undef_list : fitem
- {
- $$ = NEW_UNDEF($1);
- }
- | undef_list ',' {lex_state = EXPR_FNAME;} fitem
- {
- $$ = block_append($1, NEW_UNDEF($4));
- }
- ;
-
-op : '|' { $$ = '|'; }
- | '^' { $$ = '^'; }
- | '&' { $$ = '&'; }
- | tCMP { $$ = tCMP; }
- | tEQ { $$ = tEQ; }
- | tEQQ { $$ = tEQQ; }
- | tMATCH { $$ = tMATCH; }
- | '>' { $$ = '>'; }
- | tGEQ { $$ = tGEQ; }
- | '<' { $$ = '<'; }
- | tLEQ { $$ = tLEQ; }
- | tLSHFT { $$ = tLSHFT; }
- | tRSHFT { $$ = tRSHFT; }
- | '+' { $$ = '+'; }
- | '-' { $$ = '-'; }
- | '*' { $$ = '*'; }
- | tSTAR { $$ = '*'; }
- | '/' { $$ = '/'; }
- | '%' { $$ = '%'; }
- | tPOW { $$ = tPOW; }
- | '~' { $$ = '~'; }
- | tUPLUS { $$ = tUPLUS; }
- | tUMINUS { $$ = tUMINUS; }
- | tAREF { $$ = tAREF; }
- | tASET { $$ = tASET; }
- | '`' { $$ = '`'; }
- ;
-
-reswords : k__LINE__ | k__FILE__ | klBEGIN | klEND
- | kALIAS | kAND | kBEGIN | kBREAK | kCASE | kCLASS | kDEF
- | kDEFINED | kDO | kELSE | kELSIF | kEND | kENSURE | kFALSE
- | kFOR | kIN | kMODULE | kNEXT | kNIL | kNOT
- | kOR | kREDO | kRESCUE | kRETRY | kRETURN | kSELF | kSUPER
- | kTHEN | kTRUE | kUNDEF | kWHEN | kYIELD
- | kIF | kUNLESS | kWHILE | kUNTIL
- ;
-
-arg : lhs '=' arg
- {
- $$ = node_assign($1, $3);
- }
- | lhs '=' arg kRESCUE_MOD arg
- {
- $$ = node_assign($1, NEW_RESCUE($3, NEW_RESBODY(0,$5,0), 0));
- }
- | var_lhs tOP_ASGN arg
- {
- value_expr($3);
- if ($1) {
- ID vid = $1->nd_vid;
- if ($2 == tOROP) {
- $1->nd_value = $3;
- $$ = 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 = call_op(gettable(vid),$2,1,$3);
- }
- }
- else {
- $$ = 0;
- }
- }
- | primary_value '[' aref_args ']' tOP_ASGN arg
- {
- NODE *args;
-
- value_expr($6);
- if (!$3) $3 = NEW_ZARRAY();
- args = arg_concat($6, $3);
- if ($5 == tOROP) {
- $5 = 0;
- }
- else if ($5 == tANDOP) {
- $5 = 1;
- }
- $$ = NEW_OP_ASGN1($1, $5, args);
- fixpos($$, $1);
- }
- | primary_value '.' tIDENTIFIER tOP_ASGN arg
- {
- value_expr($5);
- if ($4 == tOROP) {
- $4 = 0;
- }
- else if ($4 == tANDOP) {
- $4 = 1;
- }
- $$ = NEW_OP_ASGN2($1, $3, $4, $5);
- fixpos($$, $1);
- }
- | primary_value '.' tCONSTANT tOP_ASGN arg
- {
- value_expr($5);
- if ($4 == tOROP) {
- $4 = 0;
- }
- else if ($4 == tANDOP) {
- $4 = 1;
- }
- $$ = NEW_OP_ASGN2($1, $3, $4, $5);
- fixpos($$, $1);
- }
- | primary_value tCOLON2 tIDENTIFIER tOP_ASGN arg
- {
- value_expr($5);
- if ($4 == tOROP) {
- $4 = 0;
- }
- else if ($4 == tANDOP) {
- $4 = 1;
- }
- $$ = NEW_OP_ASGN2($1, $3, $4, $5);
- fixpos($$, $1);
- }
- | primary_value tCOLON2 tCONSTANT tOP_ASGN arg
- {
- yyerror("constant re-assignment");
- $$ = 0;
- }
- | tCOLON3 tCONSTANT tOP_ASGN arg
- {
- yyerror("constant re-assignment");
- $$ = 0;
- }
- | backref tOP_ASGN arg
- {
- rb_backref_error($1);
- $$ = 0;
- }
- | arg tDOT2 arg
- {
- value_expr($1);
- value_expr($3);
- if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
- nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
- $1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qfalse);
- $$ = $1;
- }
- else {
- $$ = NEW_DOT2($1, $3);
- }
- }
- | arg tDOT3 arg
- {
- value_expr($1);
- value_expr($3);
- if (nd_type($1) == NODE_LIT && FIXNUM_P($1->nd_lit) &&
- nd_type($3) == NODE_LIT && FIXNUM_P($3->nd_lit)) {
- $1->nd_lit = rb_range_new($1->nd_lit, $3->nd_lit, Qtrue);
- $$ = $1;
- }
- else {
- $$ = NEW_DOT3($1, $3);
- }
- }
- | arg '+' arg
- {
- $$ = call_op($1, '+', 1, $3);
- }
- | arg '-' arg
- {
- $$ = call_op($1, '-', 1, $3);
- }
- | arg '*' arg
- {
- $$ = call_op($1, '*', 1, $3);
- }
- | arg '/' arg
- {
- $$ = call_op($1, '/', 1, $3);
- }
- | arg '%' arg
- {
- $$ = call_op($1, '%', 1, $3);
- }
- | arg tPOW arg
- {
- $$ = call_op($1, tPOW, 1, $3);
- }
- | tUMINUS_NUM tINTEGER tPOW arg
- {
- $$ = call_op(call_op($2, tPOW, 1, $4), tUMINUS, 0, 0);
- }
- | tUMINUS_NUM tFLOAT tPOW arg
- {
- $$ = call_op(call_op($2, tPOW, 1, $4), tUMINUS, 0, 0);
- }
- | tUPLUS arg
- {
- if ($2 && nd_type($2) == NODE_LIT) {
- $$ = $2;
- }
- else {
- $$ = call_op($2, tUPLUS, 0, 0);
- }
- }
- | tUMINUS arg
- {
- $$ = call_op($2, tUMINUS, 0, 0);
- }
- | arg '|' arg
- {
- $$ = call_op($1, '|', 1, $3);
- }
- | arg '^' arg
- {
- $$ = call_op($1, '^', 1, $3);
- }
- | arg '&' arg
- {
- $$ = call_op($1, '&', 1, $3);
- }
- | arg tCMP arg
- {
- $$ = call_op($1, tCMP, 1, $3);
- }
- | arg '>' arg
- {
- $$ = call_op($1, '>', 1, $3);
- }
- | arg tGEQ arg
- {
- $$ = call_op($1, tGEQ, 1, $3);
- }
- | arg '<' arg
- {
- $$ = call_op($1, '<', 1, $3);
- }
- | arg tLEQ arg
- {
- $$ = call_op($1, tLEQ, 1, $3);
- }
- | arg tEQ arg
- {
- $$ = call_op($1, tEQ, 1, $3);
- }
- | arg tEQQ arg
- {
- $$ = call_op($1, tEQQ, 1, $3);
- }
- | arg tNEQ arg
- {
- $$ = NEW_NOT(call_op($1, tEQ, 1, $3));
- }
- | arg tMATCH arg
- {
- $$ = match_gen($1, $3);
- }
- | arg tNMATCH arg
- {
- $$ = NEW_NOT(match_gen($1, $3));
- }
- | '!' arg
- {
- $$ = NEW_NOT(cond($2));
- }
- | '~' arg
- {
- $$ = call_op($2, '~', 0, 0);
- }
- | arg tLSHFT arg
- {
- $$ = call_op($1, tLSHFT, 1, $3);
- }
- | arg tRSHFT arg
- {
- $$ = call_op($1, tRSHFT, 1, $3);
- }
- | arg tANDOP arg
- {
- $$ = logop(NODE_AND, $1, $3);
- }
- | arg tOROP arg
- {
- $$ = logop(NODE_OR, $1, $3);
- }
- | kDEFINED opt_nl {in_defined = 1;} arg
- {
- in_defined = 0;
- $$ = NEW_DEFINED($4);
- }
- | arg '?' arg ':' arg
- {
- $$ = NEW_IF(cond($1), $3, $5);
- fixpos($$, $1);
- }
- | primary
- {
- $$ = $1;
- }
- ;
-
-arg_value : arg
- {
- value_expr($1);
- $$ = $1;
- }
- ;
-
-aref_args : none
- | command opt_nl
- {
- rb_warn("parenthesize argument(s) for future version");
- $$ = NEW_LIST($1);
- }
- | args trailer
- {
- $$ = $1;
- }
- | args ',' tSTAR arg opt_nl
- {
- value_expr($4);
- $$ = arg_concat($1, $4);
- }
- | assocs trailer
- {
- $$ = NEW_LIST(NEW_HASH($1));
- }
- | tSTAR arg opt_nl
- {
- value_expr($2);
- $$ = NEW_NEWLINE(NEW_SPLAT($2));
- }
- ;
-
-paren_args : '(' none ')'
- {
- $$ = $2;
- }
- | '(' call_args opt_nl ')'
- {
- $$ = $2;
- }
- | '(' block_call opt_nl ')'
- {
- rb_warn("parenthesize argument for future version");
- $$ = NEW_LIST($2);
- }
- | '(' args ',' block_call opt_nl ')'
- {
- rb_warn("parenthesize argument for future version");
- $$ = list_append($2, $4);
- }
- ;
-
-opt_paren_args : none
- | paren_args
- ;
-
-call_args : command
- {
- rb_warn("parenthesize argument(s) for future version");
- $$ = NEW_LIST($1);
- }
- | args opt_block_arg
- {
- $$ = arg_blk_pass($1, $2);
- }
- | args ',' tSTAR arg_value opt_block_arg
- {
- $$ = arg_concat($1, $4);
- $$ = arg_blk_pass($$, $5);
- }
- | assocs opt_block_arg
- {
- $$ = NEW_LIST(NEW_HASH($1));
- $$ = arg_blk_pass($$, $2);
- }
- | assocs ',' tSTAR arg_value opt_block_arg
- {
- $$ = arg_concat(NEW_LIST(NEW_HASH($1)), $4);
- $$ = arg_blk_pass($$, $5);
- }
- | args ',' assocs opt_block_arg
- {
- $$ = list_append($1, NEW_HASH($3));
- $$ = arg_blk_pass($$, $4);
- }
- | args ',' assocs ',' tSTAR arg opt_block_arg
- {
- value_expr($6);
- $$ = arg_concat(list_append($1, NEW_HASH($3)), $6);
- $$ = arg_blk_pass($$, $7);
- }
- | tSTAR arg_value opt_block_arg
- {
- $$ = arg_blk_pass(NEW_SPLAT($2), $3);
- }
- | block_arg
- ;
-
-call_args2 : arg_value ',' args opt_block_arg
- {
- $$ = arg_blk_pass(list_concat(NEW_LIST($1),$3), $4);
- }
- | arg_value ',' block_arg
- {
- $$ = arg_blk_pass($1, $3);
- }
- | arg_value ',' tSTAR arg_value opt_block_arg
- {
- $$ = arg_concat(NEW_LIST($1), $4);
- $$ = arg_blk_pass($$, $5);
- }
- | arg_value ',' args ',' tSTAR arg_value opt_block_arg
- {
- $$ = arg_concat(list_concat(NEW_LIST($1),$3), $6);
- $$ = arg_blk_pass($$, $7);
- }
- | assocs opt_block_arg
- {
- $$ = NEW_LIST(NEW_HASH($1));
- $$ = arg_blk_pass($$, $2);
- }
- | assocs ',' tSTAR arg_value opt_block_arg
- {
- $$ = arg_concat(NEW_LIST(NEW_HASH($1)), $4);
- $$ = arg_blk_pass($$, $5);
- }
- | arg_value ',' assocs opt_block_arg
- {
- $$ = list_append(NEW_LIST($1), NEW_HASH($3));
- $$ = arg_blk_pass($$, $4);
- }
- | arg_value ',' args ',' assocs opt_block_arg
- {
- $$ = list_append(list_concat(NEW_LIST($1),$3), NEW_HASH($5));
- $$ = arg_blk_pass($$, $6);
- }
- | arg_value ',' assocs ',' tSTAR arg_value opt_block_arg
- {
- $$ = arg_concat(list_append(NEW_LIST($1), NEW_HASH($3)), $6);
- $$ = arg_blk_pass($$, $7);
- }
- | arg_value ',' args ',' assocs ',' tSTAR arg_value opt_block_arg
- {
- $$ = arg_concat(list_append(list_concat(NEW_LIST($1), $3), NEW_HASH($5)), $8);
- $$ = arg_blk_pass($$, $9);
- }
- | tSTAR arg_value opt_block_arg
- {
- $$ = arg_blk_pass(NEW_SPLAT($2), $3);
- }
- | block_arg
- ;
-
-command_args : {
- $<num>$ = cmdarg_stack;
- CMDARG_PUSH(1);
- }
- open_args
- {
- /* CMDARG_POP() */
- cmdarg_stack = $<num>1;
- $$ = $2;
- }
- ;
-
-open_args : call_args
- | tLPAREN_ARG {lex_state = EXPR_ENDARG;} ')'
- {
- rb_warn("don't put space before argument parentheses");
- $$ = 0;
- }
- | tLPAREN_ARG call_args2 {lex_state = EXPR_ENDARG;} ')'
- {
- rb_warn("don't put space before argument parentheses");
- $$ = $2;
- }
- ;
-
-block_arg : tAMPER arg_value
- {
- $$ = NEW_BLOCK_PASS($2);
- }
- ;
-
-opt_block_arg : ',' block_arg
- {
- $$ = $2;
- }
- | none
- ;
-
-args : arg_value
- {
- $$ = NEW_LIST($1);
- }
- | args ',' arg_value
- {
- $$ = list_append($1, $3);
- }
- ;
-
-mrhs : args ',' arg_value
- {
- $$ = list_append($1, $3);
- }
- | args ',' tSTAR arg_value
- {
- $$ = arg_concat($1, $4);
- }
- | tSTAR arg_value
- {
- $$ = NEW_SPLAT($2);
- }
- ;
-
-primary : literal
- | strings
- | xstring
- | regexp
- | words
- | qwords
- | var_ref
- | backref
- | tFID
- {
- $$ = NEW_FCALL($1, 0);
- }
- | kBEGIN
- {
- $<num>1 = ruby_sourceline;
- }
- bodystmt
- kEND
- {
- if ($3 == NULL)
- $$ = NEW_NIL();
- else
- $$ = NEW_BEGIN($3);
- nd_set_line($$, $<num>1);
- }
- | tLPAREN_ARG expr {lex_state = EXPR_ENDARG;} opt_nl ')'
- {
- rb_warning("(...) interpreted as grouped expression");
- $$ = $2;
- }
- | tLPAREN compstmt ')'
- {
- if (!$2) $$ = NEW_NIL();
- else $$ = $2;
- }
- | primary_value tCOLON2 tCONSTANT
- {
- $$ = NEW_COLON2($1, $3);
- }
- | tCOLON3 tCONSTANT
- {
- $$ = NEW_COLON3($2);
- }
- | primary_value '[' aref_args ']'
- {
- if ($1 && nd_type($1) == NODE_SELF)
- $$ = NEW_FCALL(tAREF, $3);
- else
- $$ = NEW_CALL($1, tAREF, $3);
- fixpos($$, $1);
- }
- | tLBRACK aref_args ']'
- {
- if ($2 == 0) {
- $$ = NEW_ZARRAY(); /* zero length array*/
- }
- else {
- $$ = $2;
- }
- }
- | tLBRACE assoc_list '}'
- {
- $$ = NEW_HASH($2);
- }
- | kRETURN
- {
- $$ = NEW_RETURN(0);
- }
- | kYIELD '(' call_args ')'
- {
- $$ = new_yield($3);
- }
- | kYIELD '(' ')'
- {
- $$ = NEW_YIELD(0, Qfalse);
- }
- | kYIELD
- {
- $$ = NEW_YIELD(0, Qfalse);
- }
- | kDEFINED opt_nl '(' {in_defined = 1;} expr ')'
- {
- in_defined = 0;
- $$ = NEW_DEFINED($5);
- }
- | operation brace_block
- {
- $2->nd_iter = NEW_FCALL($1, 0);
- $$ = $2;
- fixpos($2->nd_iter, $2);
- }
- | method_call
- | method_call brace_block
- {
- if ($1 && nd_type($1) == NODE_BLOCK_PASS) {
- rb_compile_error("both block arg and actual block given");
- }
- $2->nd_iter = $1;
- $$ = $2;
- fixpos($$, $1);
- }
- | kIF expr_value then
- compstmt
- if_tail
- kEND
- {
- $$ = NEW_IF(cond($2), $4, $5);
- fixpos($$, $2);
- if (cond_negative(&$$->nd_cond)) {
- NODE *tmp = $$->nd_body;
- $$->nd_body = $$->nd_else;
- $$->nd_else = tmp;
- }
- }
- | kUNLESS expr_value then
- compstmt
- opt_else
- kEND
- {
- $$ = NEW_UNLESS(cond($2), $4, $5);
- fixpos($$, $2);
- if (cond_negative(&$$->nd_cond)) {
- NODE *tmp = $$->nd_body;
- $$->nd_body = $$->nd_else;
- $$->nd_else = tmp;
- }
- }
- | kWHILE {COND_PUSH(1);} expr_value do {COND_POP();}
- compstmt
- kEND
- {
- $$ = NEW_WHILE(cond($3), $6, 1);
- fixpos($$, $3);
- if (cond_negative(&$$->nd_cond)) {
- nd_set_type($$, NODE_UNTIL);
- }
- }
- | kUNTIL {COND_PUSH(1);} expr_value do {COND_POP();}
- compstmt
- kEND
- {
- $$ = NEW_UNTIL(cond($3), $6, 1);
- fixpos($$, $3);
- if (cond_negative(&$$->nd_cond)) {
- nd_set_type($$, NODE_WHILE);
- }
- }
- | kCASE expr_value opt_terms
- case_body
- kEND
- {
- $$ = NEW_CASE($2, $4);
- fixpos($$, $2);
- }
- | kCASE opt_terms case_body kEND
- {
- $$ = $3;
- }
- | kCASE opt_terms kELSE compstmt kEND
- {
- $$ = $4;
- }
- | kFOR block_var kIN {COND_PUSH(1);} expr_value do {COND_POP();}
- compstmt
- kEND
- {
- $$ = NEW_FOR($2, $5, $8);
- fixpos($$, $2);
- }
- | kCLASS cpath superclass
- {
- if (in_def || in_single)
- yyerror("class definition in method body");
- class_nest++;
- local_push(0);
- $<num>$ = ruby_sourceline;
- }
- bodystmt
- kEND
- {
- $$ = NEW_CLASS($2, $5, $3);
- nd_set_line($$, $<num>4);
- local_pop();
- class_nest--;
- }
- | kCLASS tLSHFT expr
- {
- $<num>$ = in_def;
- in_def = 0;
- }
- term
- {
- $<num>$ = in_single;
- in_single = 0;
- class_nest++;
- local_push(0);
- }
- bodystmt
- kEND
- {
- $$ = NEW_SCLASS($3, $7);
- fixpos($$, $3);
- local_pop();
- class_nest--;
- in_def = $<num>4;
- in_single = $<num>6;
- }
- | kMODULE cpath
- {
- if (in_def || in_single)
- yyerror("module definition in method body");
- class_nest++;
- local_push(0);
- $<num>$ = ruby_sourceline;
- }
- bodystmt
- kEND
- {
- $$ = NEW_MODULE($2, $4);
- nd_set_line($$, $<num>3);
- local_pop();
- class_nest--;
- }
- | kDEF fname
- {
- $<id>$ = cur_mid;
- cur_mid = $2;
- in_def++;
- local_push(0);
- }
- f_arglist
- bodystmt
- kEND
- {
- if (!$5) $5 = NEW_NIL();
- $$ = NEW_DEFN($2, $4, $5, NOEX_PRIVATE);
- fixpos($$, $4);
- local_pop();
- in_def--;
- cur_mid = $<id>3;
- }
- | kDEF singleton dot_or_colon {lex_state = EXPR_FNAME;} fname
- {
- in_single++;
- local_push(0);
- lex_state = EXPR_END; /* force for args */
- }
- f_arglist
- bodystmt
- kEND
- {
- $$ = NEW_DEFS($2, $5, $7, $8);
- fixpos($$, $2);
- local_pop();
- in_single--;
- }
- | kBREAK
- {
- $$ = NEW_BREAK(0);
- }
- | kNEXT
- {
- $$ = NEW_NEXT(0);
- }
- | kREDO
- {
- $$ = NEW_REDO();
- }
- | kRETRY
- {
- $$ = NEW_RETRY();
- }
- ;
-
-primary_value : primary
- {
- value_expr($1);
- $$ = $1;
- }
- ;
-
-then : term
- | ':'
- | kTHEN
- | term kTHEN
- ;
-
-do : term
- | ':'
- | kDO_COND
- ;
-
-if_tail : opt_else
- | kELSIF expr_value then
- compstmt
- if_tail
- {
- $$ = NEW_IF(cond($2), $4, $5);
- fixpos($$, $2);
- }
- ;
-
-opt_else : none
- | kELSE compstmt
- {
- $$ = $2;
- }
- ;
-
-block_var : lhs
- | mlhs
- ;
-
-opt_block_var : none
- | '|' /* none */ '|'
- {
- $$ = (NODE*)1;
- }
- | tOROP
- {
- $$ = (NODE*)1;
- }
- | '|' block_var '|'
- {
- $$ = $2;
- }
- ;
-
-do_block : kDO_BLOCK
- {
- $<vars>$ = dyna_push();
- $<num>1 = ruby_sourceline;
- }
- opt_block_var {$<vars>$ = ruby_dyna_vars;}
- compstmt
- kEND
- {
- $$ = NEW_ITER($3, 0, dyna_init($5, $<vars>4));
- nd_set_line($$, $<num>1);
- dyna_pop($<vars>2);
- }
- ;
-
-block_call : command do_block
- {
- if ($1 && nd_type($1) == NODE_BLOCK_PASS) {
- rb_compile_error("both block arg and actual block given");
- }
- $2->nd_iter = $1;
- $$ = $2;
- fixpos($$, $1);
- }
- | block_call '.' operation2 opt_paren_args
- {
- $$ = new_call($1, $3, $4);
- }
- | block_call tCOLON2 operation2 opt_paren_args
- {
- $$ = new_call($1, $3, $4);
- }
- ;
-
-method_call : operation paren_args
- {
- $$ = new_fcall($1, $2);
- fixpos($$, $2);
- }
- | primary_value '.' operation2 opt_paren_args
- {
- $$ = new_call($1, $3, $4);
- fixpos($$, $1);
- }
- | primary_value tCOLON2 operation2 paren_args
- {
- $$ = new_call($1, $3, $4);
- fixpos($$, $1);
- }
- | primary_value tCOLON2 operation3
- {
- $$ = new_call($1, $3, 0);
- }
- | kSUPER paren_args
- {
- $$ = new_super($2);
- }
- | kSUPER
- {
- $$ = NEW_ZSUPER();
- }
- ;
-
-brace_block : '{'
- {
- $<vars>$ = dyna_push();
- $<num>1 = ruby_sourceline;
- }
- opt_block_var {$<vars>$ = ruby_dyna_vars;}
- compstmt '}'
- {
- $$ = NEW_ITER($3, 0, dyna_init($5, $<vars>4));
- nd_set_line($$, $<num>1);
- dyna_pop($<vars>2);
- }
- | kDO
- {
- $<vars>$ = dyna_push();
- $<num>1 = ruby_sourceline;
- }
- opt_block_var {$<vars>$ = ruby_dyna_vars;}
- compstmt kEND
- {
- $$ = NEW_ITER($3, 0, dyna_init($5, $<vars>4));
- nd_set_line($$, $<num>1);
- dyna_pop($<vars>2);
- }
- ;
-
-case_body : kWHEN when_args then
- compstmt
- cases
- {
- $$ = NEW_WHEN($2, $4, $5);
- }
- ;
-when_args : args
- | args ',' tSTAR arg_value
- {
- $$ = list_append($1, NEW_WHEN($4, 0, 0));
- }
- | tSTAR arg_value
- {
- $$ = NEW_LIST(NEW_WHEN($2, 0, 0));
- }
- ;
-
-cases : opt_else
- | case_body
- ;
-
-opt_rescue : kRESCUE exc_list exc_var then
- compstmt
- opt_rescue
- {
- if ($3) {
- $3 = node_assign($3, NEW_GVAR(rb_intern("$!")));
- $5 = block_append($3, $5);
- }
- $$ = NEW_RESBODY($2, $5, $6);
- fixpos($$, $2?$2:$5);
- }
- | none
- ;
-
-exc_list : arg_value
- {
- $$ = NEW_LIST($1);
- }
- | mrhs
- | none
- ;
-
-exc_var : tASSOC lhs
- {
- $$ = $2;
- }
- | none
- ;
-
-opt_ensure : kENSURE compstmt
- {
- if ($2)
- $$ = $2;
- else
- /* place holder */
- $$ = NEW_NIL();
- }
- | none
- ;
-
-literal : numeric
- | symbol
- {
- $$ = NEW_LIT(ID2SYM($1));
- }
- | dsym
- ;
-
-strings : string
- {
- NODE *node = $1;
- if (!node) {
- node = NEW_STR(rb_str_new(0, 0));
- }
- else {
- node = evstr2dstr(node);
- }
- $$ = node;
- }
- ;
-
-string : string1
- | string string1
- {
- $$ = literal_concat($1, $2);
- }
- ;
-
-string1 : tSTRING_BEG string_contents tSTRING_END
- {
- $$ = $2;
- }
- ;
-
-xstring : tXSTRING_BEG xstring_contents tSTRING_END
- {
- NODE *node = $2;
- if (!node) {
- node = NEW_XSTR(rb_str_new(0, 0));
- }
- else {
- switch (nd_type(node)) {
- case NODE_STR:
- nd_set_type(node, NODE_XSTR);
- break;
- case NODE_DSTR:
- nd_set_type(node, NODE_DXSTR);
- break;
- default:
- node = NEW_NODE(NODE_DXSTR, rb_str_new(0, 0), 1, NEW_LIST(node));
- break;
- }
- }
- $$ = node;
- }
- ;
-
-regexp : tREGEXP_BEG xstring_contents tREGEXP_END
- {
- int options = $3;
- NODE *node = $2;
- if (!node) {
- node = NEW_LIT(rb_reg_new("", 0, options & ~RE_OPTION_ONCE));
- }
- else switch (nd_type(node)) {
- case NODE_STR:
- {
- VALUE src = node->nd_lit;
- nd_set_type(node, NODE_LIT);
- node->nd_lit = rb_reg_new(RSTRING(src)->ptr,
- RSTRING(src)->len,
- options & ~RE_OPTION_ONCE);
- }
- break;
- default:
- node = NEW_NODE(NODE_DSTR, rb_str_new(0, 0), 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_ONCE;
- break;
- }
- $$ = node;
- }
- ;
-
-words : tWORDS_BEG ' ' tSTRING_END
- {
- $$ = NEW_ZARRAY();
- }
- | tWORDS_BEG word_list tSTRING_END
- {
- $$ = $2;
- }
- ;
-
-word_list : /* none */
- {
- $$ = 0;
- }
- | word_list word ' '
- {
- $$ = list_append($1, evstr2dstr($2));
- }
- ;
-
-word : string_content
- | word string_content
- {
- $$ = literal_concat($1, $2);
- }
- ;
-
-qwords : tQWORDS_BEG ' ' tSTRING_END
- {
- $$ = NEW_ZARRAY();
- }
- | tQWORDS_BEG qword_list tSTRING_END
- {
- $$ = $2;
- }
- ;
-
-qword_list : /* none */
- {
- $$ = 0;
- }
- | qword_list tSTRING_CONTENT ' '
- {
- $$ = list_append($1, $2);
- }
- ;
-
-string_contents : /* none */
- {
- $$ = 0;
- }
- | string_contents string_content
- {
- $$ = literal_concat($1, $2);
- }
- ;
-
-xstring_contents: /* none */
- {
- $$ = 0;
- }
- | xstring_contents string_content
- {
- $$ = literal_concat($1, $2);
- }
- ;
-
-string_content : tSTRING_CONTENT
- | tSTRING_DVAR
- {
- $<node>$ = lex_strterm;
- lex_strterm = 0;
- lex_state = EXPR_BEG;
- }
- string_dvar
- {
- lex_strterm = $<node>2;
- $$ = NEW_EVSTR($3);
- }
- | tSTRING_DBEG
- {
- $<node>$ = lex_strterm;
- lex_strterm = 0;
- lex_state = EXPR_BEG;
- COND_PUSH(0);
- CMDARG_PUSH(0);
- }
- compstmt '}'
- {
- lex_strterm = $<node>2;
- COND_LEXPOP();
- CMDARG_LEXPOP();
- if (($$ = $3) && nd_type($$) == NODE_NEWLINE) {
- $$ = $$->nd_next;
- rb_gc_force_recycle((VALUE)$3);
- }
- $$ = new_evstr($$);
- }
- ;
-
-string_dvar : tGVAR {$$ = NEW_GVAR($1);}
- | tIVAR {$$ = NEW_IVAR($1);}
- | tCVAR {$$ = NEW_CVAR($1);}
- | backref
- ;
-
-symbol : tSYMBEG sym
- {
- lex_state = EXPR_END;
- $$ = $2;
- }
- ;
-
-sym : fname
- | tIVAR
- | tGVAR
- | tCVAR
- ;
-
-dsym : tSYMBEG xstring_contents tSTRING_END
- {
- lex_state = EXPR_END;
- if (!($$ = $2)) {
- $$ = NEW_NIL();
- yyerror("empty symbol literal");
- }
- else {
- VALUE lit;
-
- switch (nd_type($$)) {
- case NODE_DSTR:
- nd_set_type($$, NODE_DSYM);
- break;
- case NODE_STR:
- lit = $$->nd_lit;
- if (RSTRING(lit)->len == 0) {
- yyerror("empty symbol literal");
- break;
- }
- if (strlen(RSTRING(lit)->ptr) == RSTRING(lit)->len) {
- $$->nd_lit = ID2SYM(rb_intern(RSTRING($$->nd_lit)->ptr));
- nd_set_type($$, NODE_LIT);
- break;
- }
- /* fall through */
- default:
- $$ = NEW_NODE(NODE_DSYM, rb_str_new(0, 0), 1, NEW_LIST($$));
- break;
- }
- }
- }
- ;
-
-numeric : tINTEGER
- | tFLOAT
- | tUMINUS_NUM tINTEGER %prec tLOWEST
- {
- $$ = negate_lit($2);
- }
- | tUMINUS_NUM tFLOAT %prec tLOWEST
- {
- $$ = negate_lit($2);
- }
- ;
-
-variable : tIDENTIFIER
- | tIVAR
- | tGVAR
- | tCONSTANT
- | tCVAR
- | kNIL {$$ = kNIL;}
- | kSELF {$$ = kSELF;}
- | kTRUE {$$ = kTRUE;}
- | kFALSE {$$ = kFALSE;}
- | k__FILE__ {$$ = k__FILE__;}
- | k__LINE__ {$$ = k__LINE__;}
- ;
-
-var_ref : variable
- {
- $$ = gettable($1);
- }
- ;
-
-var_lhs : variable
- {
- $$ = assignable($1, 0);
- }
- ;
-
-backref : tNTH_REF
- | tBACK_REF
- ;
-
-superclass : term
- {
- $$ = 0;
- }
- | '<'
- {
- lex_state = EXPR_BEG;
- }
- expr_value term
- {
- $$ = $3;
- }
- | error term {yyerrok; $$ = 0;}
- ;
-
-f_arglist : '(' f_args opt_nl ')'
- {
- $$ = $2;
- lex_state = EXPR_BEG;
- command_start = Qtrue;
- }
- | f_args term
- {
- $$ = $1;
- }
- ;
-
-f_args : f_arg ',' f_optarg ',' f_rest_arg opt_f_block_arg
- {
- $$ = block_append(NEW_ARGS($1, $3, $5), $6);
- }
- | f_arg ',' f_optarg opt_f_block_arg
- {
- $$ = block_append(NEW_ARGS($1, $3, 0), $4);
- }
- | f_arg ',' f_rest_arg opt_f_block_arg
- {
- $$ = block_append(NEW_ARGS($1, 0, $3), $4);
- }
- | f_arg opt_f_block_arg
- {
- $$ = block_append(NEW_ARGS($1, 0, 0), $2);
- }
- | f_optarg ',' f_rest_arg opt_f_block_arg
- {
- $$ = block_append(NEW_ARGS(0, $1, $3), $4);
- }
- | f_optarg opt_f_block_arg
- {
- $$ = block_append(NEW_ARGS(0, $1, 0), $2);
- }
- | f_rest_arg opt_f_block_arg
- {
- $$ = block_append(NEW_ARGS(0, 0, $1), $2);
- }
- | f_block_arg
- {
- $$ = block_append(NEW_ARGS(0, 0, 0), $1);
- }
- | /* none */
- {
- $$ = NEW_ARGS(0, 0, 0);
- }
- ;
-
-f_norm_arg : tCONSTANT
- {
- yyerror("formal argument cannot be a constant");
- }
- | tIVAR
- {
- yyerror("formal argument cannot be an instance variable");
- }
- | tGVAR
- {
- yyerror("formal argument cannot be a global variable");
- }
- | tCVAR
- {
- yyerror("formal argument cannot be a class variable");
- }
- | tIDENTIFIER
- {
- if (!is_local_id($1))
- yyerror("formal argument must be local variable");
- else if (local_id($1))
- yyerror("duplicate argument name");
- local_cnt($1);
- $$ = 1;
- }
- ;
-
-f_arg : f_norm_arg
- | f_arg ',' f_norm_arg
- {
- $$ += 1;
- }
- ;
-
-f_opt : tIDENTIFIER '=' arg_value
- {
- if (!is_local_id($1))
- yyerror("formal argument must be local variable");
- else if (local_id($1))
- yyerror("duplicate optional argument name");
- $$ = assignable($1, $3);
- }
- ;
-
-f_optarg : f_opt
- {
- $$ = NEW_BLOCK($1);
- $$->nd_end = $$;
- }
- | f_optarg ',' f_opt
- {
- $$ = block_append($1, $3);
- }
- ;
-
-restarg_mark : '*'
- | tSTAR
- ;
-
-f_rest_arg : restarg_mark tIDENTIFIER
- {
- if (!is_local_id($2))
- yyerror("rest argument must be local variable");
- else if (local_id($2))
- yyerror("duplicate rest argument name");
- if (dyna_in_block()) {
- rb_dvar_push($2, Qnil);
- }
- $$ = assignable($2, 0);
- }
- | restarg_mark
- {
- if (dyna_in_block()) {
- $$ = NEW_DASGN_CURR(internal_id(), 0);
- }
- else {
- $$ = NEW_NODE(NODE_LASGN,0,0,local_append(0));
- }
- }
- ;
-
-blkarg_mark : '&'
- | tAMPER
- ;
-
-f_block_arg : blkarg_mark tIDENTIFIER
- {
- if (!is_local_id($2))
- yyerror("block argument must be local variable");
- else if (local_id($2))
- yyerror("duplicate block argument name");
- $$ = NEW_BLOCK_ARG($2);
- }
- ;
-
-opt_f_block_arg : ',' f_block_arg
- {
- $$ = $2;
- }
- | none
- ;
-
-singleton : var_ref
- {
- $$ = $1;
- value_expr($$);
- }
- | '(' {lex_state = EXPR_BEG;} expr opt_nl ')'
- {
- if ($3 == 0) {
- yyerror("can't define singleton method for ().");
- }
- else {
- switch (nd_type($3)) {
- case NODE_STR:
- case NODE_DSTR:
- case NODE_XSTR:
- case NODE_DXSTR:
- case NODE_DREGX:
- case NODE_LIT:
- case NODE_ARRAY:
- case NODE_ZARRAY:
- yyerror("can't define singleton method for literals");
- default:
- value_expr($3);
- break;
- }
- }
- $$ = $3;
- }
- ;
-
-assoc_list : none
- | assocs trailer
- {
- $$ = $1;
- }
- | args trailer
- {
- if ($1->nd_alen%2 != 0) {
- yyerror("odd number list for Hash");
- }
- $$ = $1;
- }
- ;
-
-assocs : assoc
- | assocs ',' assoc
- {
- $$ = list_concat($1, $3);
- }
- ;
-
-assoc : arg_value tASSOC arg_value
- {
- $$ = list_append(NEW_LIST($1), $3);
- }
- ;
-
-operation : tIDENTIFIER
- | tCONSTANT
- | tFID
- ;
-
-operation2 : tIDENTIFIER
- | tCONSTANT
- | tFID
- | op
- ;
-
-operation3 : tIDENTIFIER
- | tFID
- | op
- ;
-
-dot_or_colon : '.'
- | tCOLON2
- ;
-
-opt_terms : /* none */
- | terms
- ;
-
-opt_nl : /* none */
- | '\n'
- ;
-
-trailer : /* none */
- | '\n'
- | ','
- ;
-
-term : ';' {yyerrok;}
- | '\n'
- ;
-
-terms : term
- | terms ';' {yyerrok;}
- ;
-
-none : /* none */ {$$ = 0;}
- ;
-%%
-#ifdef yystacksize
-#undef YYMALLOC
-#endif
-
-#include "regex.h"
-#include "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 is_identchar(c) (SIGN_EXTEND_CHAR(c)!=-1&&(ISALNUM(c) || (c) == '_' || ismbchar(c)))
-
-static char *tokenbuf = NULL;
-static int tokidx, toksiz = 0;
-
-#define LEAVE_BS 1
-
-static VALUE (*lex_gets)(); /* gets function */
-static VALUE lex_input; /* non-nil if File */
-static VALUE lex_lastline; /* gc protect */
-static char *lex_pbeg;
-static char *lex_p;
-static char *lex_pend;
-
-static int
-yyerror(msg)
- const char *msg;
-{
- const int max_line_margin = 30;
- const char *p, *pe;
- char *buf;
- int len, i;
-
- rb_compile_error("%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) {
- int re_mbc_startpos _((const char *, int, int, int));
- if ((len = lex_p - p) > max_line_margin) {
- p = p + re_mbc_startpos(p, len, len - max_line_margin, 0);
- pre = "...";
- }
- if ((len = pe - lex_p) > max_line_margin) {
- pe = lex_p + re_mbc_startpos(lex_p, len, max_line_margin, 1);
- 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", buf);
- }
-
- return 0;
-}
-
-static int heredoc_end;
-
-int ruby_in_compile = 0;
-int ruby__end__seen;
-
-static VALUE ruby_debug_lines;
-#ifdef YYMALLOC
-static NODE *parser_heap;
-#endif
-
-static NODE*
-yycompile(f, line)
- char *f;
- int line;
-{
- int n;
- NODE *node = 0;
- struct RVarmap *vp, *vars = ruby_dyna_vars;
-
- ruby_in_compile = 1;
- if (!compile_for_eval && rb_safe_level() == 0 &&
- rb_const_defined(rb_cObject, rb_intern("SCRIPT_LINES__"))) {
- VALUE hash, fname;
-
- hash = rb_const_get(rb_cObject, rb_intern("SCRIPT_LINES__"));
- if (TYPE(hash) == T_HASH) {
- fname = rb_str_new2(f);
- ruby_debug_lines = rb_ary_new();
- rb_hash_aset(hash, fname, ruby_debug_lines);
- }
- if (line > 1) {
- VALUE str = rb_str_new(0,0);
- while (line > 1) {
- rb_ary_push(ruby_debug_lines, str);
- line--;
- }
- }
- }
-
- ruby__end__seen = 0;
- ruby_eval_tree = 0;
- ruby_eval_tree_begin = 0;
- heredoc_end = 0;
- lex_strterm = 0;
- ruby_current_node = 0;
- ruby_sourcefile = rb_source_filename(f);
- n = yyparse();
- ruby_debug_lines = 0;
- compile_for_eval = 0;
- ruby_in_compile = 0;
- cond_stack = 0;
- cmdarg_stack = 0;
- command_start = 1;
- class_nest = 0;
- in_single = 0;
- in_def = 0;
- cur_mid = 0;
-
- vp = ruby_dyna_vars;
- ruby_dyna_vars = vars;
- lex_strterm = 0;
- while (vp && vp != vars) {
- struct RVarmap *tmp = vp;
- vp = vp->next;
- rb_gc_force_recycle((VALUE)tmp);
- }
- if (n == 0) node = ruby_eval_tree;
- if (ruby_nerrs) ruby_eval_tree_begin = 0;
- return node;
-}
-
-static int lex_gets_ptr;
-
-static VALUE
-lex_get_str(s)
- VALUE s;
-{
- char *beg, *end, *pend;
-
- beg = RSTRING(s)->ptr;
- if (lex_gets_ptr) {
- if (RSTRING(s)->len == lex_gets_ptr) return Qnil;
- beg += lex_gets_ptr;
- }
- pend = RSTRING(s)->ptr + RSTRING(s)->len;
- end = beg;
- while (end < pend) {
- if (*end++ == '\n') break;
- }
- lex_gets_ptr = end - RSTRING(s)->ptr;
- return rb_str_new(beg, end - beg);
-}
-
-static VALUE
-lex_getline()
-{
- VALUE line = (*lex_gets)(lex_input);
- if (ruby_debug_lines && !NIL_P(line)) {
- rb_ary_push(ruby_debug_lines, line);
- }
- return line;
-}
-
-NODE*
-rb_compile_string(f, s, line)
- const char *f;
- VALUE s;
- int line;
-{
- lex_gets = lex_get_str;
- lex_gets_ptr = 0;
- lex_input = s;
- lex_pbeg = lex_p = lex_pend = 0;
- ruby_sourceline = line - 1;
- compile_for_eval = ruby_in_eval;
-
- return yycompile(f, line);
-}
-
-NODE*
-rb_compile_cstr(f, s, len, line)
- const char *f, *s;
- int len, line;
-{
- return rb_compile_string(f, rb_str_new(s, len), line);
-}
-
-NODE*
-rb_compile_file(f, file, start)
- const char *f;
- VALUE file;
- int start;
-{
- lex_gets = rb_io_gets;
- lex_input = file;
- lex_pbeg = lex_p = lex_pend = 0;
- ruby_sourceline = start - 1;
-
- return yycompile(f, start);
-}
-
-static inline int
-nextc()
-{
- int c;
-
- if (lex_p == lex_pend) {
- if (lex_input) {
- VALUE v = lex_getline();
-
- if (NIL_P(v)) return -1;
- if (heredoc_end > 0) {
- ruby_sourceline = heredoc_end;
- heredoc_end = 0;
- }
- ruby_sourceline++;
- lex_pbeg = lex_p = RSTRING(v)->ptr;
- lex_pend = lex_p + RSTRING(v)->len;
- lex_lastline = v;
- }
- else {
- lex_lastline = 0;
- return -1;
- }
- }
- c = (unsigned char)*lex_p++;
- if (c == '\r' && lex_p < lex_pend && *lex_p == '\n') {
- lex_p++;
- c = '\n';
- }
-
- return c;
-}
-
-static void
-pushback(c)
- int c;
-{
- if (c == -1) return;
- 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*
-newtok()
-{
- tokidx = 0;
- if (!tokenbuf) {
- toksiz = 60;
- tokenbuf = ALLOC_N(char, 60);
- }
- if (toksiz > 4096) {
- toksiz = 60;
- REALLOC_N(tokenbuf, char, 60);
- }
- return tokenbuf;
-}
-
-static void
-tokadd(c)
- char c;
-{
- tokenbuf[tokidx++] = c;
- if (tokidx >= toksiz) {
- toksiz *= 2;
- REALLOC_N(tokenbuf, char, toksiz);
- }
-}
-
-static int
-read_escape()
-{
- int c;
-
- 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':
- {
- int numlen;
-
- pushback(c);
- c = scan_oct(lex_p, 3, &numlen);
- lex_p += numlen;
- }
- return c;
-
- case 'x': /* hex constant */
- {
- int numlen;
-
- c = scan_hex(lex_p, 2, &numlen);
- if (numlen == 0) {
- yyerror("Invalid escape character syntax");
- return 0;
- }
- lex_p += numlen;
- }
- return c;
-
- case 'b': /* backspace */
- return '\010';
-
- case 's': /* space */
- return ' ';
-
- case 'M':
- if ((c = nextc()) != '-') {
- yyerror("Invalid escape character syntax");
- pushback(c);
- return '\0';
- }
- if ((c = nextc()) == '\\') {
- return read_escape() | 0x80;
- }
- else if (c == -1) goto eof;
- else {
- return ((c & 0xff) | 0x80);
- }
-
- case 'C':
- if ((c = nextc()) != '-') {
- yyerror("Invalid escape character syntax");
- pushback(c);
- return '\0';
- }
- case 'c':
- if ((c = nextc())== '\\') {
- c = read_escape();
- }
- else if (c == '?')
- return 0177;
- else if (c == -1) goto eof;
- return c & 0x9f;
-
- eof:
- case -1:
- yyerror("Invalid escape character syntax");
- return '\0';
-
- default:
- return c;
- }
-}
-
-static int
-tokadd_escape(term)
- int term;
-{
- int c;
-
- 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':
- {
- int i;
-
- tokadd('\\');
- tokadd(c);
- for (i=0; i<2; i++) {
- c = nextc();
- if (c == -1) goto eof;
- if (c < '0' || '7' < c) {
- pushback(c);
- break;
- }
- tokadd(c);
- }
- }
- return 0;
-
- case 'x': /* hex constant */
- {
- int numlen;
-
- tokadd('\\');
- tokadd(c);
- scan_hex(lex_p, 2, &numlen);
- if (numlen == 0) {
- yyerror("Invalid escape character syntax");
- return -1;
- }
- while (numlen--)
- tokadd(nextc());
- }
- return 0;
-
- case 'M':
- if ((c = nextc()) != '-') {
- yyerror("Invalid escape character syntax");
- pushback(c);
- return 0;
- }
- tokadd('\\'); tokadd('M'); tokadd('-');
- goto escaped;
-
- case 'C':
- if ((c = nextc()) != '-') {
- yyerror("Invalid escape character syntax");
- pushback(c);
- return 0;
- }
- tokadd('\\'); tokadd('C'); tokadd('-');
- goto escaped;
-
- case 'c':
- tokadd('\\'); tokadd('c');
- escaped:
- if ((c = nextc()) == '\\') {
- return tokadd_escape(term);
- }
- else if (c == -1) goto eof;
- tokadd(c);
- return 0;
-
- eof:
- case -1:
- yyerror("Invalid escape character syntax");
- return -1;
-
- default:
- if (c != '\\' || c != term)
- tokadd('\\');
- tokadd(c);
- }
- return 0;
-}
-
-static int
-regx_options()
-{
- char kcode = 0;
- int options = 0;
- int c;
-
- newtok();
- while (c = nextc(), ISALPHA(c)) {
- switch (c) {
- case 'i':
- options |= RE_OPTION_IGNORECASE;
- break;
- case 'x':
- options |= RE_OPTION_EXTENDED;
- break;
- case 'm':
- options |= RE_OPTION_MULTILINE;
- break;
- case 'o':
- options |= RE_OPTION_ONCE;
- break;
- case 'n':
- kcode = 16;
- break;
- case 'e':
- kcode = 32;
- break;
- case 's':
- kcode = 48;
- break;
- case 'u':
- kcode = 64;
- break;
- default:
- tokadd(c);
- break;
- }
- }
- pushback(c);
- if (toklen()) {
- tokfix();
- rb_compile_error("unknown regexp option%s - %s",
- toklen() > 1 ? "s" : "", tok());
- }
- return options | kcode;
-}
-
-#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 void
-dispose_string(str)
- VALUE str;
-{
- xfree(RSTRING(str)->ptr);
- rb_gc_force_recycle(str);
-}
-
-static int
-tokadd_string(func, term, paren, nest)
- int func, term, paren, *nest;
-{
- int c;
-
- 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 == '\\') {
- 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;
-
- default:
- if (func & STR_FUNC_REGEXP) {
- pushback(c);
- if (tokadd_escape(term) < 0)
- return -1;
- continue;
- }
- else if (func & STR_FUNC_EXPAND) {
- pushback(c);
- if (func & STR_FUNC_ESCAPE) tokadd('\\');
- c = read_escape();
- }
- else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
- /* ignore backslashed spaces in %w */
- }
- else if (c != term && !(paren && c == paren)) {
- tokadd('\\');
- }
- }
- }
- else if (ismbchar(c)) {
- int i, len = mbclen(c)-1;
-
- for (i = 0; i < len; i++) {
- tokadd(c);
- c = nextc();
- }
- }
- else if ((func & STR_FUNC_QWORDS) && ISSPACE(c)) {
- pushback(c);
- break;
- }
- if (!c && (func & STR_FUNC_SYMBOL)) {
- func &= ~STR_FUNC_SYMBOL;
- rb_compile_error("symbol cannot contain '\\0'");
- continue;
- }
- tokadd(c);
- }
- return c;
-}
-
-#define NEW_STRTERM(func, term, paren) \
- rb_node_newnode(NODE_STRTERM, (func), (term) | ((paren) << (CHAR_BIT * 2)), 0)
-
-static int
-parse_string(quote)
- NODE *quote;
-{
- int func = quote->nd_func;
- int term = nd_term(quote);
- int paren = nd_paren(quote);
- int c, space = 0;
-
- 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;
- 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) == -1) {
- ruby_sourceline = nd_line(quote);
- rb_compile_error("unterminated string meets end of file");
- return tSTRING_END;
- }
-
- tokfix();
- yylval.node = NEW_STR(rb_str_new(tok(), toklen()));
- return tSTRING_CONTENT;
-}
-
-static int
-heredoc_identifier()
-{
- 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) {
- len = mbclen(c);
- do {tokadd(c);} while (--len > 0 && (c = nextc()) != -1);
- }
- if (c == -1) {
- rb_compile_error("unterminated here document identifier");
- return 0;
- }
- break;
-
- default:
- if (!is_identchar(c)) {
- pushback(c);
- if (func & STR_FUNC_INDENT) {
- pushback('-');
- }
- return 0;
- }
- newtok();
- term = '"';
- tokadd(func |= str_dquote);
- do {
- len = mbclen(c);
- do {tokadd(c);} while (--len > 0 && (c = nextc()) != -1);
- } while ((c = nextc()) != -1 && is_identchar(c));
- pushback(c);
- break;
- }
-
- tokfix();
- len = lex_p - lex_pbeg;
- lex_p = lex_pend;
- lex_strterm = rb_node_newnode(NODE_HEREDOC,
- rb_str_new(tok(), toklen()), /* nd_lit */
- len, /* nd_nth */
- lex_lastline); /* nd_orig */
- return term == '`' ? tXSTRING_BEG : tSTRING_BEG;
-}
-
-static void
-heredoc_restore(here)
- NODE *here;
-{
- VALUE line = here->nd_orig;
- lex_lastline = line;
- lex_pbeg = RSTRING(line)->ptr;
- lex_pend = lex_pbeg + RSTRING(line)->len;
- 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);
-}
-
-static int
-whole_match_p(eos, len, indent)
- char *eos;
- int len, indent;
-{
- 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
-here_document(here)
- NODE *here;
-{
- int c, func, indent = 0;
- char *eos, *p, *pend;
- long len;
- VALUE str = 0;
-
- eos = RSTRING(here->nd_lit)->ptr;
- len = RSTRING(here->nd_lit)->len - 1;
- indent = (func = *eos++) & STR_FUNC_INDENT;
-
- if ((c = nextc()) == -1) {
- error:
- rb_compile_error("can't find string \"%s\" anywhere before EOF", eos);
- 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(lex_lastline)->ptr;
- 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 = rb_str_new(p, pend - p);
- if (pend < lex_pend) rb_str_cat(str, "\n", 1);
- lex_p = lex_pend;
- if (nextc() == -1) {
- if (str) dispose_string(str);
- goto error;
- }
- } while (!whole_match_p(eos, len, indent));
- }
- else {
- 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)) == -1) goto error;
- if (c != '\n') {
- yylval.node = NEW_STR(rb_str_new(tok(), toklen()));
- return tSTRING_CONTENT;
- }
- tokadd(nextc());
- if ((c = nextc()) == -1) goto error;
- } while (!whole_match_p(eos, len, indent));
- str = rb_str_new(tok(), toklen());
- }
- heredoc_restore(lex_strterm);
- lex_strterm = NEW_STRTERM(-1, 0, 0);
- yylval.node = NEW_STR(str);
- return tSTRING_CONTENT;
-}
-
-#include "lex.c"
-
-static void
-arg_ambiguous()
-{
- rb_warning("ambiguous first argument; put parentheses or even spaces");
-}
-
-#define IS_ARG() (lex_state == EXPR_ARG || lex_state == EXPR_CMDARG)
-
-static int
-yylex()
-{
- register int c;
- int space_seen = 0;
- int cmd_state;
- enum lex_state last_state;
-
- 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_END;
- }
- }
- 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_END;
- }
- }
- 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++;
- goto retry;
-
- case '#': /* it's a comment */
- while ((c = nextc()) != '\n') {
- if (c == -1)
- return 0;
- }
- /* fall through */
- case '\n':
- switch (lex_state) {
- case EXPR_BEG:
- case EXPR_FNAME:
- case EXPR_DOT:
- case EXPR_CLASS:
- goto retry;
- default:
- break;
- }
- command_start = Qtrue;
- lex_state = EXPR_BEG;
- return '\n';
-
- case '*':
- if ((c = nextc()) == '*') {
- if ((c = nextc()) == '=') {
- yylval.id = tPOW;
- lex_state = EXPR_BEG;
- return tOP_ASGN;
- }
- pushback(c);
- c = tPOW;
- }
- else {
- if (c == '=') {
- yylval.id = '*';
- lex_state = EXPR_BEG;
- return tOP_ASGN;
- }
- pushback(c);
- if (IS_ARG() && space_seen && !ISSPACE(c)){
- rb_warning("`*' interpreted as argument prefix");
- c = tSTAR;
- }
- else if (lex_state == EXPR_BEG || lex_state == EXPR_MID) {
- 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 '!':
- lex_state = EXPR_BEG;
- if ((c = nextc()) == '=') {
- 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])) {
- for (;;) {
- lex_p = lex_pend;
- c = nextc();
- if (c == -1) {
- rb_compile_error("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_p = lex_pend;
- 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()) == '=') {
- 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()) == '=') {
- 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_BEG;
- return '?';
- }
- c = nextc();
- if (c == -1) {
- rb_compile_error("incomplete character syntax");
- return 0;
- }
- if (ISSPACE(c)){
- 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_warn("invalid character syntax; use ?\\%c", c2);
- }
- }
- ternary:
- pushback(c);
- lex_state = EXPR_BEG;
- return '?';
- }
- else if (ismbchar(c)) {
- rb_warn("multibyte character literal not supported yet; use ?\\%.3o", c);
- goto ternary;
- }
- else if ((ISALNUM(c) || c == '_') && lex_p < lex_pend && is_identchar(*lex_p)) {
- goto ternary;
- }
- else if (c == '\\') {
- c = read_escape();
- }
- c &= 0xff;
- lex_state = EXPR_END;
- yylval.node = NEW_LIT(INT2FIX(c));
- return tINTEGER;
-
- case '&':
- if ((c = nextc()) == '&') {
- lex_state = EXPR_BEG;
- if ((c = nextc()) == '=') {
- yylval.id = tANDOP;
- lex_state = EXPR_BEG;
- return tOP_ASGN;
- }
- pushback(c);
- return tANDOP;
- }
- else if (c == '=') {
- yylval.id = '&';
- lex_state = EXPR_BEG;
- return tOP_ASGN;
- }
- pushback(c);
- if (IS_ARG() && space_seen && !ISSPACE(c)){
- rb_warning("`&' interpreted as argument prefix");
- c = tAMPER;
- }
- else if (lex_state == EXPR_BEG || lex_state == EXPR_MID) {
- 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()) == '=') {
- yylval.id = tOROP;
- lex_state = EXPR_BEG;
- return tOP_ASGN;
- }
- pushback(c);
- return tOROP;
- }
- if (c == '=') {
- 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 == '=') {
- yylval.id = '+';
- lex_state = EXPR_BEG;
- return tOP_ASGN;
- }
- if (lex_state == EXPR_BEG || lex_state == EXPR_MID ||
- (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 == '=') {
- yylval.id = '-';
- lex_state = EXPR_BEG;
- return tOP_ASGN;
- }
- if (lex_state == EXPR_BEG || lex_state == EXPR_MID ||
- (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_END;
- 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;
- yylval.node = NEW_LIT(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;
- yylval.node = NEW_LIT(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;
- yylval.node = NEW_LIT(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 == '_') {
- 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 > '7') break;
- nondigit = 0;
- tokadd(c);
- } while ((c = nextc()) != -1);
- if (toklen() > start) {
- pushback(c);
- tokfix();
- if (nondigit) goto trailing_uc;
- yylval.node = NEW_LIT(rb_cstr_to_inum(tok(), 8, Qfalse));
- return tINTEGER;
- }
- if (nondigit) {
- pushback(c);
- goto trailing_uc;
- }
- }
- if (c > '7' && c <= '9') {
- yyerror("Illegal octal digit");
- }
- else if (c == '.' || c == 'e' || c == 'E') {
- tokadd('0');
- }
- else {
- pushback(c);
- yylval.node = NEW_LIT(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_warn("Float %s out of range", tok());
- errno = 0;
- }
- yylval.node = NEW_LIT(rb_float_new(d));
- return tFLOAT;
- }
- yylval.node = NEW_LIT(rb_cstr_to_inum(tok(), 10, Qfalse));
- return tINTEGER;
- }
-
- case ']':
- case '}':
- case ')':
- COND_LEXPOP();
- CMDARG_LEXPOP();
- lex_state = EXPR_END;
- return c;
-
- case ':':
- c = nextc();
- if (c == ':') {
- if (lex_state == EXPR_BEG || lex_state == EXPR_MID ||
- 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 (lex_state == EXPR_BEG || lex_state == EXPR_MID) {
- lex_strterm = NEW_STRTERM(str_regexp, '/', 0);
- return tREGEXP_BEG;
- }
- if ((c = nextc()) == '=') {
- 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()) == '=') {
- 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 ';':
- command_start = Qtrue;
- case ',':
- lex_state = EXPR_BEG;
- return c;
-
- case '~':
- if (lex_state == EXPR_FNAME || lex_state == EXPR_DOT) {
- if ((c = nextc()) != '@') {
- pushback(c);
- }
- }
- switch (lex_state) {
- case EXPR_FNAME: case EXPR_DOT:
- lex_state = EXPR_ARG; break;
- default:
- lex_state = EXPR_BEG; break;
- }
- return '~';
-
- case '(':
- command_start = Qtrue;
- if (lex_state == EXPR_BEG || lex_state == EXPR_MID) {
- c = tLPAREN;
- }
- else if (space_seen) {
- if (lex_state == EXPR_CMDARG) {
- c = tLPAREN_ARG;
- }
- else if (lex_state == EXPR_ARG) {
- rb_warn("don't put space before argument parentheses");
- c = '(';
- }
- }
- COND_PUSH(0);
- CMDARG_PUSH(0);
- lex_state = EXPR_BEG;
- return c;
-
- case '[':
- 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 (lex_state == EXPR_BEG || lex_state == EXPR_MID) {
- c = tLBRACK;
- }
- else if (IS_ARG() && space_seen) {
- c = tLBRACK;
- }
- lex_state = EXPR_BEG;
- COND_PUSH(0);
- CMDARG_PUSH(0);
- return c;
-
- case '{':
- 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;
- return c;
-
- case '\\':
- c = nextc();
- if (c == '\n') {
- space_seen = 1;
- goto retry; /* skip \\n */
- }
- pushback(c);
- return '\\';
-
- case '%':
- if (lex_state == EXPR_BEG || lex_state == EXPR_MID) {
- int term;
- int paren;
-
- c = nextc();
- quotation:
- if (!ISALNUM(c)) {
- term = c;
- c = 'Q';
- }
- else {
- term = nextc();
- if (ISALNUM(term) || ismbchar(term)) {
- yyerror("unknown type of %string");
- return 0;
- }
- }
- if (c == -1 || term == -1) {
- rb_compile_error("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()) == '=') {
- 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_END;
- newtok();
- c = nextc();
- switch (c) {
- case '_': /* $_: last read line string */
- c = nextc();
- if (is_identchar(c)) {
- tokadd('$');
- tokadd('_');
- break;
- }
- pushback(c);
- c = '_';
- /* fall through */
- case '~': /* $~: match-data */
- local_cnt(c);
- /* fall through */
- 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();
- yylval.id = rb_intern(tok());
- return tGVAR;
-
- case '-':
- tokadd('$');
- tokadd(c);
- c = nextc();
- if (is_identchar(c)) {
- tokadd(c);
- }
- else {
- pushback(c);
- }
- gvar:
- tokfix();
- yylval.id = rb_intern(tok());
- /* xxx shouldn't check if valid option variable */
- 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;
- }
- 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('$');
- do {
- tokadd(c);
- c = nextc();
- } while (ISDIGIT(c));
- pushback(c);
- if (last_state == EXPR_FNAME) goto gvar;
- tokfix();
- yylval.node = NEW_NTH_REF(atoi(tok()+1));
- return tNTH_REF;
-
- default:
- if (!is_identchar(c)) {
- pushback(c);
- return '$';
- }
- case '0':
- tokadd('$');
- }
- break;
-
- case '@':
- c = nextc();
- newtok();
- tokadd('@');
- if (c == '@') {
- tokadd('@');
- c = nextc();
- }
- if (ISDIGIT(c)) {
- if (tokidx == 1) {
- rb_compile_error("`@%c' is not allowed as an instance variable name", c);
- }
- else {
- rb_compile_error("`@@%c' is not allowed as a class variable name", c);
- }
- return 0;
- }
- if (!is_identchar(c)) {
- pushback(c);
- return '@';
- }
- break;
-
- case '_':
- if (was_bol() && whole_match_p("__END__", 7, 0)) {
- ruby__end__seen = 1;
- lex_lastline = 0;
- return -1;
- }
- newtok();
- break;
-
- default:
- if (!is_identchar(c)) {
- rb_compile_error("Invalid char `\\%03o' in expression", c);
- goto retry;
- }
-
- newtok();
- break;
- }
-
- do {
- tokadd(c);
- if (ismbchar(c)) {
- int i, len = mbclen(c)-1;
-
- for (i = 0; i < len; i++) {
- c = nextc();
- tokadd(c);
- }
- }
- c = nextc();
- } while (is_identchar(c));
- if ((c == '!' || c == '?') && is_identchar(tok()[0]) && !peek('=')) {
- tokadd(c);
- }
- else {
- pushback(c);
- }
- tokfix();
-
- {
- int result = 0;
-
- last_state = lex_state;
- switch (tok()[0]) {
- case '$':
- lex_state = EXPR_END;
- result = tGVAR;
- break;
- case '@':
- lex_state = EXPR_END;
- 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 (lex_state != EXPR_DOT) {
- struct kwtable *kw;
-
- /* See if it is a reserved word. */
- kw = rb_reserved_word(tok(), toklen());
- if (kw) {
- enum lex_state state = lex_state;
- lex_state = kw->state;
- if (state == EXPR_FNAME) {
- yylval.id = rb_intern(kw->name);
- return kw->id[0];
- }
- if (kw->id[0] == kDO) {
- if (COND_P()) return kDO_COND;
- if (CMDARG_P() && state != EXPR_CMDARG)
- return kDO_BLOCK;
- if (state == EXPR_ENDARG)
- return kDO_BLOCK;
- return kDO;
- }
- if (state == EXPR_BEG)
- 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 ||
- lex_state == EXPR_MID ||
- lex_state == EXPR_DOT ||
- lex_state == EXPR_ARG ||
- lex_state == EXPR_CMDARG) {
- if (cmd_state) {
- lex_state = EXPR_CMDARG;
- }
- else {
- lex_state = EXPR_ARG;
- }
- }
- else {
- lex_state = EXPR_END;
- }
- }
- yylval.id = rb_intern(tok());
- if (is_local_id(yylval.id) &&
- last_state != EXPR_DOT &&
- ((dyna_in_block() && rb_dvar_defined(yylval.id)) || local_id(yylval.id))) {
- lex_state = EXPR_END;
- }
- return result;
- }
-}
-
-NODE*
-rb_node_newnode(type, a0, a1, a2)
- enum node_type type;
- VALUE a0, a1, a2;
-{
- NODE *n = (NODE*)rb_newobj();
-
- n->flags |= T_NODE;
- nd_set_type(n, type);
- nd_set_line(n, ruby_sourceline);
- n->nd_file = ruby_sourcefile;
-
- n->u1.value = a0;
- n->u2.value = a1;
- n->u3.value = a2;
-
- return n;
-}
-
-static enum node_type
-nodetype(node) /* for debug */
- NODE *node;
-{
- return (enum node_type)nd_type(node);
-}
-
-static int
-nodeline(node)
- NODE *node;
-{
- return nd_line(node);
-}
-
-static NODE*
-newline_node(node)
- NODE *node;
-{
- NODE *nl = 0;
- if (node) {
- int line;
- if (nd_type(node) == NODE_NEWLINE) return node;
- line = nd_line(node);
- node = remove_begin(node);
- nl = NEW_NEWLINE(node);
- nd_set_line(nl, line);
- nl->nd_nth = line;
- }
- return nl;
-}
-
-static void
-fixpos(node, orig)
- NODE *node, *orig;
-{
- if (!node) return;
- if (!orig) return;
- if (orig == (NODE*)1) return;
- node->nd_file = orig->nd_file;
- nd_set_line(node, nd_line(orig));
-}
-
-static void
-parser_warning(node, mesg)
- NODE *node;
- const char *mesg;
-{
- int line = ruby_sourceline;
- ruby_sourceline = nd_line(node);
- rb_warning("%s", mesg);
- ruby_sourceline = line;
-}
-
-static void
-parser_warn(node, mesg)
- NODE *node;
- const char *mesg;
-{
- int line = ruby_sourceline;
- ruby_sourceline = nd_line(node);
- rb_warn("%s", mesg);
- ruby_sourceline = line;
-}
-
-static NODE*
-block_append(head, tail)
- NODE *head, *tail;
-{
- NODE *end, *h = head;
-
- if (tail == 0) return head;
-
- again:
- if (h == 0) return tail;
- switch (nd_type(h)) {
- case NODE_NEWLINE:
- h = h->nd_next;
- goto again;
- case NODE_LIT:
- case NODE_STR:
- 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;
- }
-
- if (RTEST(ruby_verbose)) {
- NODE *nd = end->nd_head;
- newline:
- switch (nd_type(nd)) {
- case NODE_RETURN:
- case NODE_BREAK:
- case NODE_NEXT:
- case NODE_REDO:
- case NODE_RETRY:
- parser_warning(nd, "statement not reached");
- break;
-
- case NODE_NEWLINE:
- nd = nd->nd_next;
- goto newline;
-
- 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(list, item)
- NODE *list, *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(head, tail)
- NODE *head, *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;
-}
-
-/* concat two string literals */
-static NODE *
-literal_concat(head, tail)
- NODE *head, *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(rb_str_new(0, 0));
- head = list_append(node, head);
- }
- switch (nd_type(tail)) {
- case NODE_STR:
- if (htype == NODE_STR) {
- rb_str_concat(head->nd_lit, tail->nd_lit);
- rb_gc_force_recycle((VALUE)tail);
- }
- else {
- list_append(head, tail);
- }
- break;
-
- case NODE_DSTR:
- if (htype == NODE_STR) {
- rb_str_concat(head->nd_lit, tail->nd_lit);
- 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(node)
- NODE *node;
-{
- if (nd_type(node) == NODE_EVSTR) {
- node = list_append(NEW_DSTR(rb_str_new(0, 0)), node);
- }
- return node;
-}
-
-static NODE *
-new_evstr(node)
- NODE *node;
-{
- NODE *head = node;
-
- again:
- if (node) {
- switch (nd_type(node)) {
- case NODE_STR: case NODE_DSTR: case NODE_EVSTR:
- return node;
- case NODE_NEWLINE:
- node = node->nd_next;
- goto again;
- }
- }
- return NEW_EVSTR(head);
-}
-
-static NODE *
-call_op(recv, id, narg, arg1)
- NODE *recv;
- ID id;
- int narg;
- NODE *arg1;
-{
- value_expr(recv);
- if (narg == 1) {
- value_expr(arg1);
- arg1 = NEW_LIST(arg1);
- }
- else {
- arg1 = 0;
- }
- return NEW_CALL(recv, id, arg1);
-}
-
-static NODE*
-match_gen(node1, node2)
- NODE *node1;
- NODE *node2;
-{
- local_cnt('~');
-
- 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(id)
- ID id;
-{
- if (id == kSELF) {
- return NEW_SELF();
- }
- else if (id == kNIL) {
- return NEW_NIL();
- }
- else if (id == kTRUE) {
- return NEW_TRUE();
- }
- else if (id == kFALSE) {
- return NEW_FALSE();
- }
- else if (id == k__FILE__) {
- return NEW_STR(rb_str_new2(ruby_sourcefile));
- }
- else if (id == k__LINE__) {
- return NEW_LIT(INT2FIX(ruby_sourceline));
- }
- else if (is_local_id(id)) {
- if (dyna_in_block() && rb_dvar_defined(id)) return NEW_DVAR(id);
- if (local_id(id)) return NEW_LVAR(id);
- /* method call without arguments */
-#if 0
- /* Rite will warn this */
- rb_warn("ambiguous identifier; %s() or self.%s is better for method call",
- rb_id2name(id), rb_id2name(id));
-#endif
- 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);
- }
- rb_compile_error("identifier %s is not valid", rb_id2name(id));
- return 0;
-}
-
-static VALUE dyna_var_lookup _((ID id));
-
-static NODE*
-assignable(id, val)
- ID id;
- NODE *val;
-{
- value_expr(val);
- if (id == kSELF) {
- yyerror("Can't change the value of self");
- }
- else if (id == kNIL) {
- yyerror("Can't assign to nil");
- }
- else if (id == kTRUE) {
- yyerror("Can't assign to true");
- }
- else if (id == kFALSE) {
- yyerror("Can't assign to false");
- }
- else if (id == k__FILE__) {
- yyerror("Can't assign to __FILE__");
- }
- else if (id == k__LINE__) {
- yyerror("Can't assign to __LINE__");
- }
- else if (is_local_id(id)) {
- if (rb_dvar_curr(id)) {
- return NEW_DASGN_CURR(id, val);
- }
- else if (dyna_var_lookup(id)) {
- return NEW_DASGN(id, val);
- }
- else if (local_id(id) || !dyna_in_block()) {
- return NEW_LASGN(id, val);
- }
- else{
- rb_dvar_push(id, Qnil);
- return NEW_DASGN_CURR(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)) {
- if (in_def || in_single) return NEW_CVASGN(id, val);
- return NEW_CVDECL(id, val);
- }
- else {
- rb_compile_error("identifier %s is not valid", rb_id2name(id));
- }
- return 0;
-}
-
-static NODE *
-aryset(recv, idx)
- NODE *recv, *idx;
-{
- if (recv && nd_type(recv) == NODE_SELF)
- recv = (NODE *)1;
- else
- value_expr(recv);
- return NEW_ATTRASGN(recv, tASET, idx);
-}
-
-ID
-rb_id_attrset(id)
- ID id;
-{
- id &= ~ID_SCOPE_MASK;
- id |= ID_ATTRSET;
- return id;
-}
-
-static NODE *
-attrset(recv, id)
- NODE *recv;
- ID id;
-{
- if (recv && nd_type(recv) == NODE_SELF)
- recv = (NODE *)1;
- else
- value_expr(recv);
- return NEW_ATTRASGN(recv, rb_id_attrset(id), 0);
-}
-
-static void
-rb_backref_error(node)
- NODE *node;
-{
- switch (nd_type(node)) {
- case NODE_NTH_REF:
- rb_compile_error("Can't set variable $%d", node->nd_nth);
- break;
- case NODE_BACK_REF:
- rb_compile_error("Can't set variable $%c", (int)node->nd_nth);
- break;
- }
-}
-
-static NODE *
-arg_concat(node1, node2)
- NODE *node1;
- NODE *node2;
-{
- if (!node2) return node1;
- return NEW_ARGSCAT(node1, node2);
-}
-
-static NODE *
-arg_add(node1, node2)
- NODE *node1;
- NODE *node2;
-{
- if (!node1) return NEW_LIST(node2);
- if (nd_type(node1) == NODE_ARRAY) {
- return list_append(node1, node2);
- }
- else {
- return NEW_ARGSPUSH(node1, node2);
- }
-}
-
-static NODE*
-node_assign(lhs, rhs)
- NODE *lhs, *rhs;
-{
- if (!lhs) return 0;
-
- value_expr(rhs);
- switch (nd_type(lhs)) {
- case NODE_GASGN:
- case NODE_IASGN:
- case NODE_LASGN:
- case NODE_DASGN:
- case NODE_DASGN_CURR:
- case NODE_MASGN:
- case NODE_CDECL:
- case NODE_CVDECL:
- case NODE_CVASGN:
- lhs->nd_value = rhs;
- break;
-
- case NODE_ATTRASGN:
- case NODE_CALL:
- lhs->nd_args = arg_add(lhs->nd_args, rhs);
- break;
-
- default:
- /* should not happen */
- break;
- }
-
- return lhs;
-}
-
-static int
-value_expr0(node)
- NODE *node;
-{
- int cond = 0;
-
- 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 (!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;
-
- case NODE_NEWLINE:
- node = node->nd_next;
- break;
-
- default:
- return Qtrue;
- }
- }
-
- return Qtrue;
-}
-
-static void
-void_expr0(node)
- NODE *node;
-{
- char *useless = 0;
-
- if (!RTEST(ruby_verbose)) return;
-
- again:
- if (!node) return;
- switch (nd_type(node)) {
- case NODE_NEWLINE:
- node = node->nd_next;
- goto again;
-
- 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:
- case NODE_CREF:
- 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_warn("useless use of %s in void context", useless);
- ruby_sourceline = line;
- }
-}
-
-static void
-void_stmts(node)
- 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;
-{
- NODE **n = &node;
- while (*n) {
- switch (nd_type(*n)) {
- case NODE_NEWLINE:
- n = &(*n)->nd_next;
- continue;
- case NODE_BEGIN:
- *n = (*n)->nd_body;
- default:
- return node;
- }
- }
- return node;
-}
-
-static int
-assign_in_cond(node)
- 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;
-
- case NODE_NEWLINE:
- 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;
- }
-#if 0
- if (assign_in_cond(node->nd_value) == 0) {
- parser_warning(node->nd_value, "assignment in condition");
- }
-#endif
- return 1;
-}
-
-static int
-e_option_supplied()
-{
- if (strcmp(ruby_sourcefile, "-e") == 0)
- return Qtrue;
- return Qfalse;
-}
-
-static void
-warn_unless_e_option(node, str)
- NODE *node;
- const char *str;
-{
- if (!e_option_supplied()) parser_warn(node, str);
-}
-
-static void
-warning_unless_e_option(node, str)
- NODE *node;
- const char *str;
-{
- if (!e_option_supplied()) parser_warning(node, str);
-}
-
-static NODE *cond0();
-
-static NODE*
-range_op(node)
- NODE *node;
-{
- enum node_type type;
-
- if (!e_option_supplied()) return node;
- if (node == 0) return 0;
-
- value_expr(node);
- node = cond0(node);
- type = nd_type(node);
- if (type == NODE_NEWLINE) {
- node = node->nd_next;
- type = nd_type(node);
- }
- if (type == NODE_LIT && FIXNUM_P(node->nd_lit)) {
- warn_unless_e_option(node, "integer literal in conditional range");
- return call_op(node,tEQ,1,NEW_GVAR(rb_intern("$.")));
- }
- return node;
-}
-
-static int
-literal_node(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(node)
- NODE *node;
-{
- if (node == 0) return 0;
- assign_in_cond(node);
-
- switch (nd_type(node)) {
- case NODE_DSTR:
- case NODE_EVSTR:
- case NODE_STR:
- rb_warn("string literal in condition");
- break;
-
- case NODE_DREGX:
- case NODE_DREGX_ONCE:
- warning_unless_e_option(node, "regex literal in condition");
- local_cnt('_');
- local_cnt('~');
- return NEW_MATCH2(node, NEW_GVAR(rb_intern("$_")));
-
- case NODE_AND:
- case NODE_OR:
- node->nd_1st = cond0(node->nd_1st);
- node->nd_2nd = cond0(node->nd_2nd);
- break;
-
- case NODE_DOT2:
- case NODE_DOT3:
- node->nd_beg = range_op(node->nd_beg);
- node->nd_end = range_op(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);
- node->nd_cnt = local_append(internal_id());
- if (!e_option_supplied()) {
- 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(node, "regex literal in condition");
- nd_set_type(node, NODE_MATCH);
- local_cnt('_');
- local_cnt('~');
- }
- else {
- parser_warning(node, "literal in condition");
- }
- default:
- break;
- }
- return node;
-}
-
-static NODE*
-cond(node)
- NODE *node;
-{
- if (node == 0) return 0;
- value_expr(node);
- if (nd_type(node) == NODE_NEWLINE){
- node->nd_next = cond0(node->nd_next);
- return node;
- }
- return cond0(node);
-}
-
-static NODE*
-logop(type, left, right)
- enum node_type type;
- NODE *left, *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 int
-cond_negative(nodep)
- NODE **nodep;
-{
- NODE *c = *nodep;
-
- if (!c) return 0;
- switch (nd_type(c)) {
- case NODE_NOT:
- *nodep = c->nd_body;
- return 1;
- case NODE_NEWLINE:
- if (c->nd_next && nd_type(c->nd_next) == NODE_NOT) {
- c->nd_next = c->nd_next->nd_body;
- return 1;
- }
- }
- return 0;
-}
-
-static void
-no_blockarg(node)
- NODE *node;
-{
- if (node && nd_type(node) == NODE_BLOCK_PASS) {
- rb_compile_error("block argument should not be given");
- }
-}
-
-static NODE *
-ret_args(node)
- NODE *node;
-{
- if (node) {
- no_blockarg(node);
- if (nd_type(node) == NODE_ARRAY && node->nd_next == 0) {
- node = node->nd_head;
- }
- if (node && nd_type(node) == NODE_SPLAT) {
- node = NEW_SVALUE(node);
- }
- }
- return node;
-}
-
-static NODE *
-new_yield(node)
- NODE *node;
-{
- long state = Qtrue;
-
- if (node) {
- no_blockarg(node);
- if (nd_type(node) == NODE_ARRAY && node->nd_next == 0) {
- node = node->nd_head;
- state = Qfalse;
- }
- if (node && nd_type(node) == NODE_SPLAT) {
- state = Qtrue;
- }
- }
- else {
- state = Qfalse;
- }
- return NEW_YIELD(node, state);
-}
-
-static NODE*
-negate_lit(node)
- 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)->value = -RFLOAT(node->nd_lit)->value;
- break;
- default:
- break;
- }
- return node;
-}
-
-static NODE *
-arg_blk_pass(node1, node2)
- NODE *node1;
- NODE *node2;
-{
- if (node2) {
- node2->nd_head = node1;
- return node2;
- }
- return node1;
-}
-
-static NODE*
-arg_prepend(node1, node2)
- NODE *node1, *node2;
-{
- switch (nd_type(node2)) {
- case NODE_ARRAY:
- return list_concat(NEW_LIST(node1), node2);
-
- case NODE_SPLAT:
- return arg_concat(node1, node2->nd_head);
-
- case NODE_BLOCK_PASS:
- node2->nd_body = arg_prepend(node1, node2->nd_body);
- return node2;
-
- default:
- rb_bug("unknown nodetype(%d) for arg_prepend", nd_type(node2));
- }
- return 0; /* not reached */
-}
-
-static NODE*
-new_call(r,m,a)
- NODE *r;
- ID m;
- NODE *a;
-{
- if (a && nd_type(a) == NODE_BLOCK_PASS) {
- a->nd_iter = NEW_CALL(r,m,a->nd_head);
- return a;
- }
- return NEW_CALL(r,m,a);
-}
-
-static NODE*
-new_fcall(m,a)
- ID m;
- NODE *a;
-{
- if (a && nd_type(a) == NODE_BLOCK_PASS) {
- a->nd_iter = NEW_FCALL(m,a->nd_head);
- return a;
- }
- return NEW_FCALL(m,a);
-}
-
-static NODE*
-new_super(a)
- NODE *a;
-{
- if (a && nd_type(a) == NODE_BLOCK_PASS) {
- a->nd_iter = NEW_SUPER(a->nd_head);
- return a;
- }
- return NEW_SUPER(a);
-}
-
-static struct local_vars {
- ID *tbl;
- int nofree;
- int cnt;
- int dlev;
- struct RVarmap* dyna_vars;
- struct local_vars *prev;
-} *lvtbl;
-
-static void
-local_push(top)
- int top;
-{
- struct local_vars *local;
-
- local = ALLOC(struct local_vars);
- local->prev = lvtbl;
- local->nofree = 0;
- local->cnt = 0;
- local->tbl = 0;
- local->dlev = 0;
- local->dyna_vars = ruby_dyna_vars;
- lvtbl = local;
- if (!top) {
- /* preserve reference for GC, but link should be cut. */
- rb_dvar_push(0, (VALUE)ruby_dyna_vars);
- ruby_dyna_vars->next = 0;
- }
-}
-
-static void
-local_pop()
-{
- struct local_vars *local = lvtbl->prev;
-
- if (lvtbl->tbl) {
- if (!lvtbl->nofree) xfree(lvtbl->tbl);
- else lvtbl->tbl[0] = lvtbl->cnt;
- }
- ruby_dyna_vars = lvtbl->dyna_vars;
- xfree(lvtbl);
- lvtbl = local;
-}
-
-static ID*
-local_tbl()
-{
- lvtbl->nofree = 1;
- return lvtbl->tbl;
-}
-
-static int
-local_append(id)
- ID id;
-{
- if (lvtbl->tbl == 0) {
- lvtbl->tbl = ALLOC_N(ID, 4);
- lvtbl->tbl[0] = 0;
- lvtbl->tbl[1] = '_';
- lvtbl->tbl[2] = '~';
- lvtbl->cnt = 2;
- if (id == '_') return 0;
- if (id == '~') return 1;
- }
- else {
- REALLOC_N(lvtbl->tbl, ID, lvtbl->cnt+2);
- }
-
- lvtbl->tbl[lvtbl->cnt+1] = id;
- return lvtbl->cnt++;
-}
-
-static int
-local_cnt(id)
- ID id;
-{
- int cnt, max;
-
- if (id == 0) return lvtbl->cnt;
-
- for (cnt=1, max=lvtbl->cnt+1; cnt<max;cnt++) {
- if (lvtbl->tbl[cnt] == id) return cnt-1;
- }
- return local_append(id);
-}
-
-static int
-local_id(id)
- ID id;
-{
- int i, max;
-
- if (lvtbl == 0) return Qfalse;
- for (i=3, max=lvtbl->cnt+1; i<max; i++) {
- if (lvtbl->tbl[i] == id) return Qtrue;
- }
- return Qfalse;
-}
-
-static void
-top_local_init()
-{
- local_push(1);
- lvtbl->cnt = ruby_scope->local_tbl?ruby_scope->local_tbl[0]:0;
- if (lvtbl->cnt > 0) {
- lvtbl->tbl = ALLOC_N(ID, lvtbl->cnt+3);
- MEMCPY(lvtbl->tbl, ruby_scope->local_tbl, ID, lvtbl->cnt+1);
- }
- else {
- lvtbl->tbl = 0;
- }
- if (ruby_dyna_vars)
- lvtbl->dlev = 1;
- else
- lvtbl->dlev = 0;
-}
-
-static void
-top_local_setup()
-{
- int len = lvtbl->cnt;
- int i;
-
- if (len > 0) {
- i = ruby_scope->local_tbl?ruby_scope->local_tbl[0]:0;
-
- if (i < len) {
- if (i == 0 || (ruby_scope->flags & SCOPE_MALLOC) == 0) {
- VALUE *vars = ALLOC_N(VALUE, len+1);
- if (ruby_scope->local_vars) {
- *vars++ = ruby_scope->local_vars[-1];
- MEMCPY(vars, ruby_scope->local_vars, VALUE, i);
- rb_mem_clear(vars+i, len-i);
- }
- else {
- *vars++ = 0;
- rb_mem_clear(vars, len);
- }
- ruby_scope->local_vars = vars;
- ruby_scope->flags |= SCOPE_MALLOC;
- }
- else {
- VALUE *vars = ruby_scope->local_vars-1;
- REALLOC_N(vars, VALUE, len+1);
- ruby_scope->local_vars = vars+1;
- rb_mem_clear(ruby_scope->local_vars+i, len-i);
- }
- if (ruby_scope->local_tbl && ruby_scope->local_vars[-1] == 0) {
- if (!(ruby_scope->flags & SCOPE_CLONE))
- xfree(ruby_scope->local_tbl);
- }
- ruby_scope->local_vars[-1] = 0; /* no reference needed */
- ruby_scope->local_tbl = local_tbl();
- }
- }
- local_pop();
-}
-
-#define DVAR_USED FL_USER6
-
-static VALUE
-dyna_var_lookup(id)
- ID id;
-{
- struct RVarmap *vars = ruby_dyna_vars;
-
- while (vars) {
- if (vars->id == id) {
- FL_SET(vars, DVAR_USED);
- return Qtrue;
- }
- vars = vars->next;
- }
- return Qfalse;
-}
-
-static struct RVarmap*
-dyna_push()
-{
- struct RVarmap* vars = ruby_dyna_vars;
-
- rb_dvar_push(0, 0);
- lvtbl->dlev++;
- return vars;
-}
-
-static void
-dyna_pop(vars)
- struct RVarmap* vars;
-{
- lvtbl->dlev--;
- ruby_dyna_vars = vars;
-}
-
-static int
-dyna_in_block()
-{
- return (lvtbl->dlev > 0);
-}
-
-static NODE *
-dyna_init(node, pre)
- NODE *node;
- struct RVarmap *pre;
-{
- struct RVarmap *post = ruby_dyna_vars;
- NODE *var;
-
- if (!node || !post || pre == post) return node;
- for (var = 0; post != pre && post->id; post = post->next) {
- if (FL_TEST(post, DVAR_USED)) {
- var = NEW_DASGN_CURR(post->id, var);
- }
- }
- return block_append(var, node);
-}
-
-int
-ruby_parser_stack_on_heap()
-{
-#if defined(YYMALLOC)
- return Qfalse;
-#else
- return Qtrue;
-#endif
-}
-
-void
-rb_gc_mark_parser()
-{
-#if defined YYMALLOC
- rb_gc_mark((VALUE)parser_heap);
-#elif defined yystacksize
- if (yyvsp) rb_gc_mark_locations((VALUE *)yyvs, (VALUE *)yyvsp);
-#endif
-
- if (!ruby_in_compile) return;
-
- rb_gc_mark_maybe((VALUE)yylval.node);
- rb_gc_mark(ruby_debug_lines);
- rb_gc_mark(lex_lastline);
- rb_gc_mark(lex_input);
- rb_gc_mark((VALUE)lex_strterm);
-}
-
-void
-rb_parser_append_print()
-{
- ruby_eval_tree =
- block_append(ruby_eval_tree,
- NEW_FCALL(rb_intern("print"),
- NEW_ARRAY(NEW_GVAR(rb_intern("$_")))));
-}
-
-void
-rb_parser_while_loop(chop, split)
- int chop, split;
-{
- if (split) {
- ruby_eval_tree =
- block_append(NEW_GASGN(rb_intern("$F"),
- NEW_CALL(NEW_GVAR(rb_intern("$_")),
- rb_intern("split"), 0)),
- ruby_eval_tree);
- }
- if (chop) {
- ruby_eval_tree =
- block_append(NEW_CALL(NEW_GVAR(rb_intern("$_")),
- rb_intern("chop!"), 0), ruby_eval_tree);
- }
- ruby_eval_tree = NEW_OPT_N(ruby_eval_tree);
-}
-
-static struct {
- ID token;
- char *name;
-} op_tbl[] = {
- {tDOT2, ".."},
- {tDOT3, "..."},
- {'+', "+"},
- {'-', "-"},
- {'+', "+(binary)"},
- {'-', "-(binary)"},
- {'*', "*"},
- {'/', "/"},
- {'%', "%"},
- {tPOW, "**"},
- {tUPLUS, "+@"},
- {tUMINUS, "-@"},
- {tUPLUS, "+(unary)"},
- {tUMINUS, "-(unary)"},
- {'|', "|"},
- {'^', "^"},
- {'&', "&"},
- {tCMP, "<=>"},
- {'>', ">"},
- {tGEQ, ">="},
- {'<', "<"},
- {tLEQ, "<="},
- {tEQ, "=="},
- {tEQQ, "==="},
- {tNEQ, "!="},
- {tMATCH, "=~"},
- {tNMATCH, "!~"},
- {'!', "!"},
- {'~', "~"},
- {'!', "!(unary)"},
- {'~', "~(unary)"},
- {'!', "!@"},
- {'~', "~@"},
- {tAREF, "[]"},
- {tASET, "[]="},
- {tLSHFT, "<<"},
- {tRSHFT, ">>"},
- {tCOLON2, "::"},
- {'`', "`"},
- {0, 0}
-};
-
-static st_table *sym_tbl;
-static st_table *sym_rev_tbl;
-
-void
-Init_sym()
-{
- sym_tbl = st_init_strtable_with_size(200);
- sym_rev_tbl = st_init_numtable_with_size(200);
-}
-
-static ID last_id = tLAST_TOKEN;
-
-static ID
-internal_id()
-{
- return ID_INTERNAL | (++last_id << ID_SCOPE_SHIFT);
-}
-
-static int
-is_special_global_name(m)
- const char *m;
-{
- switch (*m) {
- case '~': case '*': case '$': case '?': case '!': case '@':
- case '/': case '\\': case ';': case ',': case '.': case '=':
- case ':': case '<': case '>': case '\"':
- case '&': case '`': case '\'': case '+':
- case '0':
- ++m;
- break;
- case '-':
- ++m;
- if (is_identchar(*m)) m += mbclen(*m);
- break;
- default:
- if (!ISDIGIT(*m)) return 0;
- do ++m; while (ISDIGIT(*m));
- }
- return !*m;
-}
-
-int
-rb_symname_p(name)
- const char *name;
-{
- const char *m = name;
- int localid = Qfalse;
-
- if (!m) return Qfalse;
- switch (*m) {
- case '\0':
- return Qfalse;
-
- case '$':
- if (is_special_global_name(++m)) return Qtrue;
- goto id;
-
- case '@':
- if (*++m == '@') ++m;
- goto id;
-
- case '<':
- switch (*++m) {
- case '<': ++m; break;
- case '=': if (*++m == '>') ++m; break;
- default: break;
- }
- break;
-
- case '>':
- switch (*++m) {
- case '>': case '=': ++m; break;
- }
- break;
-
- case '=':
- switch (*++m) {
- case '~': ++m; break;
- case '=': if (*++m == '=') ++m; break;
- default: return Qfalse;
- }
- break;
-
- case '*':
- if (*++m == '*') ++m;
- break;
-
- case '+': case '-':
- if (*++m == '@') ++m;
- break;
-
- case '|': case '^': case '&': case '/': case '%': case '~': case '`':
- ++m;
- break;
-
- case '[':
- if (*++m != ']') return Qfalse;
- if (*++m == '=') ++m;
- break;
-
- default:
- localid = !ISUPPER(*m);
- id:
- if (*m != '_' && !ISALPHA(*m) && !ismbchar(*m)) return Qfalse;
- while (is_identchar(*m)) m += mbclen(*m);
- if (localid) {
- switch (*m) {
- case '!': case '?': case '=': ++m;
- }
- }
- break;
- }
- return *m ? Qfalse : Qtrue;
-}
-
-int
-rb_sym_interned_p(str)
- VALUE str;
-{
- ID id;
-
- if (st_lookup(sym_tbl, (st_data_t)RSTRING(str)->ptr, (st_data_t *)&id))
- return Qtrue;
- return Qfalse;
-}
-
-ID
-rb_intern(name)
- const char *name;
-{
- const char *m = name;
- ID id;
- int last;
-
- if (st_lookup(sym_tbl, (st_data_t)name, (st_data_t *)&id))
- return id;
-
- last = strlen(name)-1;
- id = 0;
- switch (*name) {
- case '$':
- id |= ID_GLOBAL;
- if (is_special_global_name(++m)) goto new_id;
- break;
- case '@':
- if (name[1] == '@') {
- m++;
- id |= ID_CLASS;
- }
- else {
- id |= ID_INSTANCE;
- }
- m++;
- break;
- default:
- if (name[0] != '_' && ISASCII(name[0]) && !ISALNUM(name[0])) {
- /* operators */
- int i;
-
- for (i=0; op_tbl[i].token; i++) {
- if (*op_tbl[i].name == *name &&
- strcmp(op_tbl[i].name, name) == 0) {
- id = op_tbl[i].token;
- goto id_regist;
- }
- }
- }
-
- if (name[last] == '=') {
- /* attribute assignment */
- char *buf = ALLOCA_N(char,last+1);
-
- strncpy(buf, name, last);
- buf[last] = '\0';
- id = rb_intern(buf);
- if (id > tLAST_TOKEN && !is_attrset_id(id)) {
- id = rb_id_attrset(id);
- goto id_regist;
- }
- id = ID_ATTRSET;
- }
- else if (ISUPPER(name[0])) {
- id = ID_CONST;
- }
- else {
- id = ID_LOCAL;
- }
- break;
- }
- if (!ISDIGIT(*m)) {
- while (m <= name + last && is_identchar(*m)) {
- m += mbclen(*m);
- }
- }
- if (*m) id = ID_JUNK;
- new_id:
- id |= ++last_id << ID_SCOPE_SHIFT;
- id_regist:
- name = strdup(name);
- st_add_direct(sym_tbl, (st_data_t)name, id);
- st_add_direct(sym_rev_tbl, id, (st_data_t)name);
- return id;
-}
-
-char *
-rb_id2name(id)
- ID id;
-{
- char *name;
- st_data_t data;
-
- if (id < tLAST_TOKEN) {
- int i;
-
- for (i=0; op_tbl[i].token; i++) {
- if (op_tbl[i].token == id)
- return op_tbl[i].name;
- }
- }
-
- if (st_lookup(sym_rev_tbl, id, &data))
- return (char *)data;
-
- if (is_attrset_id(id)) {
- ID id2 = (id & ~ID_SCOPE_MASK) | ID_LOCAL;
-
- again:
- name = rb_id2name(id2);
- if (name) {
- char *buf = ALLOCA_N(char, strlen(name)+2);
-
- strcpy(buf, name);
- strcat(buf, "=");
- rb_intern(buf);
- return rb_id2name(id);
- }
- if (is_local_id(id2)) {
- id2 = (id & ~ID_SCOPE_MASK) | ID_CONST;
- goto again;
- }
- }
- return 0;
-}
-
-static int
-symbols_i(key, value, ary)
- char *key;
- 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()
-{
- VALUE ary = rb_ary_new2(sym_tbl->num_entries);
-
- st_foreach(sym_tbl, symbols_i, ary);
- return ary;
-}
-
-int
-rb_is_const_id(id)
- ID id;
-{
- if (is_const_id(id)) return Qtrue;
- return Qfalse;
-}
-
-int
-rb_is_class_id(id)
- ID id;
-{
- if (is_class_id(id)) return Qtrue;
- return Qfalse;
-}
-
-int
-rb_is_instance_id(id)
- ID id;
-{
- if (is_instance_id(id)) return Qtrue;
- return Qfalse;
-}
-
-int
-rb_is_local_id(id)
- ID id;
-{
- if (is_local_id(id)) return Qtrue;
- return Qfalse;
-}
-
-int
-rb_is_junk_id(id)
- ID id;
-{
- if (is_junk_id(id)) return Qtrue;
- return Qfalse;
-}
-
-static void
-special_local_set(c, val)
- char c;
- VALUE val;
-{
- int cnt;
-
- top_local_init();
- cnt = local_cnt(c);
- top_local_setup();
- ruby_scope->local_vars[cnt] = val;
-}
-
-VALUE
-rb_backref_get()
-{
- VALUE *var = rb_svar(1);
- if (var) {
- return *var;
- }
- return Qnil;
-}
-
-void
-rb_backref_set(val)
- VALUE val;
-{
- VALUE *var = rb_svar(1);
- if (var) {
- *var = val;
- }
- else {
- special_local_set('~', val);
- }
-}
-
-VALUE
-rb_lastline_get()
-{
- VALUE *var = rb_svar(0);
- if (var) {
- return *var;
- }
- return Qnil;
-}
-
-void
-rb_lastline_set(val)
- VALUE val;
-{
- VALUE *var = rb_svar(0);
- if (var) {
- *var = val;
- }
- else {
- special_local_set('_', val);
- }
-}
-
-#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))
-
-static void *
-rb_parser_malloc(size)
- size_t size;
-{
- size_t cnt = HEAPCNT(1, size);
- NODE *n = NEWHEAP();
- void *ptr = xmalloc(size);
-
- return ADD2HEAP(n, cnt, ptr);
-}
-
-static void *
-rb_parser_calloc(nelem, size)
- size_t nelem, size;
-{
- size_t cnt = HEAPCNT(nelem, size);
- NODE *n = NEWHEAP();
- void *ptr = xcalloc(nelem, size);
-
- return ADD2HEAP(n, cnt, ptr);
-}
-
-static void *
-rb_parser_realloc(ptr, size)
- 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);
-}
-
-static void
-rb_parser_free(ptr)
- void *ptr;
-{
- NODE **prev = &parser_heap, *n;
-
- while ((n = *prev) != 0) {
- if (n->u1.node == ptr) {
- *prev = n->u2.node;
- rb_gc_force_recycle((VALUE)n);
- break;
- }
- prev = &n->u2.node;
- }
- xfree(ptr);
-}
-#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-25 20:38:34 +0000