pike.git/src/language.yacc:d68a0775bc87470da29145d52145633dcd60bafa

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3422 3423 3424 3425 3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 3463 3464 3465 3466 3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481 3482 3483 3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 /* -*- C -*- */ /*\ ||| This file a part of Pike, and is copyright by Fredrik Hubinette ||| Pike is distributed as GPL (General Public License) ||| See the files COPYING and DISCLAIMER for more information. \*/ /**/ %pure_parser %token TOK_ARROW /* * Basic value pushing */ %token TOK_CONSTANT TOK_FLOAT TOK_STRING %token TOK_NUMBER /* * These are the predefined functions that can be accessed from Pike. */ %token TOK_INC TOK_DEC %token TOK_RETURN %token TOK_EQ TOK_GE TOK_LE TOK_NE %token TOK_NOT %token TOK_LSH TOK_RSH %token TOK_LAND TOK_LOR %token TOK_SWITCH TOK_SSCANF TOK_CATCH %token TOK_FOREACH /* This is the end of file marker used by the lexer * to enable nicer EOF in error handling. */ %token TOK_LEX_EOF %token TOK_ADD_EQ %token TOK_AND_EQ %token TOK_ARRAY_ID %token TOK_BREAK %token TOK_CASE %token TOK_CLASS %token TOK_COLON_COLON %token TOK_CONTINUE %token TOK_DEFAULT %token TOK_DIV_EQ %token TOK_DO %token TOK_DOT_DOT %token TOK_DOT_DOT_DOT %token TOK_ELSE %token TOK_EXTERN %token TOK_FLOAT_ID %token TOK_FOR %token TOK_FUNCTION_ID %token TOK_GAUGE %token TOK_IDENTIFIER %token TOK_IF %token TOK_IMPORT %token TOK_INHERIT %token TOK_INLINE %token TOK_LOCAL_ID %token TOK_FINAL_ID %token TOK_INT_ID %token TOK_LAMBDA %token TOK_MULTISET_ID %token TOK_MULTISET_END %token TOK_MULTISET_START %token TOK_LSH_EQ %token TOK_MAPPING_ID %token TOK_MIXED_ID %token TOK_MOD_EQ %token TOK_MULT_EQ %token TOK_NO_MASK %token TOK_OBJECT_ID %token TOK_OR_EQ %token TOK_PRIVATE %token TOK_PROGRAM_ID %token TOK_PROTECTED %token TOK_PREDEF %token TOK_PUBLIC %token TOK_RSH_EQ %token TOK_STATIC %token TOK_STRING_ID %token TOK_SUB_EQ %token TOK_TYPEOF %token TOK_VARIANT %token TOK_VOID_ID %token TOK_WHILE %token TOK_XOR_EQ %token TOK_OPTIONAL %right '=' %right '?' %left TOK_LOR %left TOK_LAND %left '|' %left '^' %left '&' %left TOK_EQ TOK_NE %left '>' TOK_GE '<' TOK_LE /* nonassoc? */ %left TOK_LSH TOK_RSH %left '+' '-' %left '*' '%' '/' %right TOK_NOT '~' %nonassoc TOK_INC TOK_DEC %{ /* This is the grammar definition of Pike. */ #include "global.h" RCSID("$Id: language.yacc,v 1.224 2001/02/19 23:50:00 grubba Exp $"); #ifdef HAVE_MEMORY_H #include <memory.h> #endif #include "interpret.h" #include "array.h" #include "object.h" #include "stralloc.h" #include "las.h" #include "interpret.h" #include "program.h" #include "pike_types.h" #include "constants.h" #include "pike_macros.h" #include "pike_error.h" #include "docode.h" #include "machine.h" #include "main.h" #include "opcodes.h" #define YYMAXDEPTH 1000 #ifdef PIKE_DEBUG #ifndef YYDEBUG /* May also be defined by machine.h */ #define YYDEBUG 1 #endif /* YYDEBUG */ #endif int add_local_name(struct pike_string *,struct pike_string *,node *); int low_add_local_name(struct compiler_frame *, struct pike_string *,struct pike_string *,node *); static node *lexical_islocal(struct pike_string *); static int inherit_depth; static struct program_state *inherit_state = NULL; /* * Kludge for Bison not using prototypes. */ #ifndef __GNUC__ #ifndef __cplusplus static void __yy_memcpy(char *to, char *from, YY_COUNT_TYPE count); #endif /* !__cplusplus */ #endif /* !__GNUC__ */ %} %union { int number; FLOAT_TYPE fnum; struct node_s *n; char *str; } %{ /* Needs to be included after YYSTYPE is defined. */ #include "lex.h" %} %{ /* Include <stdio.h> our selves, so that we can do our magic * without being disturbed... */ #include <stdio.h> int yylex(YYSTYPE *yylval); /* Bison is stupid, and tries to optimize for space... */ #ifdef YYBISON #define short int #endif /* YYBISON */ %} %type <fnum> TOK_FLOAT %type <number> TOK_ARRAY_ID %type <number> TOK_BREAK %type <number> TOK_CASE %type <number> TOK_CATCH %type <number> TOK_CONTINUE %type <number> TOK_DEFAULT %type <number> TOK_DO %type <number> TOK_ELSE %type <number> TOK_FLOAT_ID %type <number> TOK_FOR %type <number> TOK_FOREACH %type <number> TOK_FUNCTION_ID %type <number> TOK_GAUGE %type <number> TOK_IF %type <number> TOK_INHERIT %type <number> TOK_INLINE %type <number> TOK_INT_ID %type <number> TOK_LAMBDA %type <number> TOK_LOCAL_ID %type <number> TOK_MAPPING_ID %type <number> TOK_MIXED_ID %type <number> TOK_MULTISET_ID %type <number> TOK_NO_MASK %type <number> TOK_OBJECT_ID %type <number> TOK_PREDEF %type <number> TOK_PRIVATE %type <number> TOK_PROGRAM_ID %type <number> TOK_PROTECTED %type <number> TOK_PUBLIC %type <number> TOK_RETURN %type <number> TOK_SSCANF %type <number> TOK_STATIC %type <number> TOK_STRING_ID %type <number> TOK_SWITCH %type <number> TOK_VOID_ID %type <number> TOK_WHILE %type <number> arguments %type <number> arguments2 %type <number> func_args %type <number> optional_create_arguments %type <number> create_arguments %type <number> create_arguments2 %type <number> create_arg %type <number> assign %type <number> modifier %type <number> modifier_list %type <number> modifiers %type <number> inherit_specifier %type <number> function_type_list %type <number> function_type_list2 %type <number> optional_dot_dot_dot %type <number> optional_comma %type <number> optional_stars %type <str> magic_identifiers %type <str> magic_identifiers1 %type <str> magic_identifiers2 %type <str> magic_identifiers3 /* The following symbols return type information */ %type <n> number_or_minint %type <n> number_or_maxint %type <n> cast %type <n> soft_cast %type <n> simple_type %type <n> simple_type2 %type <n> simple_identifier_type %type <n> string_constant %type <n> string %type <n> TOK_STRING %type <n> TOK_NUMBER %type <n> optional_rename_inherit %type <n> optional_identifier %type <n> TOK_IDENTIFIER %type <n> assoc_pair %type <n> block %type <n> optional_block %type <n> failsafe_block %type <n> close_paren_or_missing %type <n> block_or_semi %type <n> break %type <n> case %type <n> catch %type <n> catch_arg %type <n> class %type <n> safe_comma_expr %type <n> comma_expr %type <n> comma_expr2 %type <n> comma_expr_or_maxint %type <n> comma_expr_or_zero %type <n> cond %type <n> continue %type <n> default %type <n> do %type <n> safe_expr0 %type <n> expr00 %type <n> expr01 %type <n> expr1 %type <n> expr2 %type <n> expr3 expr0 %type <n> expr4 %type <n> expr_list %type <n> expr_list2 %type <n> for %type <n> for_expr %type <n> foreach %type <n> gauge %type <n> idents %type <n> idents2 %type <n> labeled_statement %type <n> lambda %type <n> local_name_list %type <n> local_name_list2 %type <n> low_idents %type <n> safe_lvalue %type <n> lvalue %type <n> lvalue_list %type <n> low_lvalue_list %type <n> m_expr_list %type <n> m_expr_list2 %type <n> new_local_name %type <n> new_local_name2 %type <n> normal_label_statement %type <n> optional_else_part %type <n> optional_label %type <n> return %type <n> sscanf %type <n> statement %type <n> statements %type <n> switch %type <n> typeof %type <n> unused %type <n> unused2 %type <n> while %type <n> optional_comma_expr %type <n> low_program_ref %type <n> local_function %type <n> local_function2 %type <n> magic_identifier %% all: program { YYACCEPT; } | program TOK_LEX_EOF { YYACCEPT; } /* | error TOK_LEX_EOF { YYABORT; } */ ; program: program def | program ';' | /* empty */ ; string_constant: string | string_constant '+' string { struct pike_string *a,*b; copy_shared_string(a,$1->u.sval.u.string); copy_shared_string(b,$3->u.sval.u.string); free_node($1); free_node($3); a=add_and_free_shared_strings(a,b); $$=mkstrnode(a); free_string(a); } ; optional_rename_inherit: ':' TOK_IDENTIFIER { $$=$2; } | ':' bad_identifier { $$=0; } | ':' error { $$=0; } | { $$=0; } ; /* NOTE: This rule pushes a string "name" on the stack in addition * to resolving the program reference. */ low_program_ref: string_constant { ref_push_string($1->u.sval.u.string); ref_push_string($1->u.sval.u.string); ref_push_string(lex.current_file); if (error_handler && error_handler->prog) { ref_push_object(error_handler); SAFE_APPLY_MASTER("handle_inherit", 3); } else { SAFE_APPLY_MASTER("handle_inherit", 2); } if(Pike_sp[-1].type != T_PROGRAM) my_yyerror("Couldn't cast string \"%s\" to program", $1->u.sval.u.string->str); free_node($1); $$=mksvaluenode(Pike_sp-1); if($$->name) free_string($$->name); add_ref( $$->name=Pike_sp[-2].u.string ); pop_stack(); } | idents { if(Pike_compiler->last_identifier) { ref_push_string(Pike_compiler->last_identifier); }else{ push_constant_text(""); } $$=$1; } ; /* NOTE: Pushes the resolved program on the stack. */ program_ref: low_program_ref { resolv_program($1); free_node($1); } ; inheritance: modifiers TOK_INHERIT low_program_ref optional_rename_inherit ';' { if (($1 & ID_EXTERN) && (Pike_compiler->compiler_pass == 1)) { yywarning("Extern declared inherit."); } if(!(Pike_compiler->new_program->flags & PROGRAM_PASS_1_DONE)) { struct pike_string *s=Pike_sp[-1].u.string; if($4) s=$4->u.sval.u.string; compiler_do_inherit($3,$1,s); } if($4) free_node($4); pop_n_elems(1); free_node($3); } | modifiers TOK_INHERIT low_program_ref error ';' { free_node($3); yyerrok; } | modifiers TOK_INHERIT low_program_ref error TOK_LEX_EOF { free_node($3); yyerror("Missing ';'."); yyerror("Unexpected end of file."); } | modifiers TOK_INHERIT low_program_ref error '}' { free_node($3); yyerror("Missing ';'."); } | modifiers TOK_INHERIT error ';' { yyerrok; } | modifiers TOK_INHERIT error TOK_LEX_EOF { yyerror("Missing ';'."); yyerror("Unexpected end of file."); } | modifiers TOK_INHERIT error '}' { yyerror("Missing ';'."); } ; import: TOK_IMPORT idents ';' { resolv_constant($2); free_node($2); use_module(Pike_sp-1); pop_stack(); } | TOK_IMPORT string ';' { ref_push_string($2->u.sval.u.string); free_node($2); ref_push_string(lex.current_file); if (error_handler && error_handler->prog) { ref_push_object(error_handler); SAFE_APPLY_MASTER("handle_import", 3); } else { SAFE_APPLY_MASTER("handle_import", 2); } use_module(Pike_sp-1); pop_stack(); } | TOK_IMPORT error ';' { yyerrok; } | TOK_IMPORT error TOK_LEX_EOF { yyerror("Missing ';'."); yyerror("Unexpected end of file."); } | TOK_IMPORT error '}' { yyerror("Missing ';'."); } ; constant_name: TOK_IDENTIFIER '=' safe_expr0 { /* This can be made more lenient in the future */ /* Ugly hack to make sure that $3 is optimized */ { int tmp=Pike_compiler->compiler_pass; $3=mknode(F_COMMA_EXPR,$3,0); Pike_compiler->compiler_pass=tmp; } if ((Pike_compiler->current_modifiers & ID_EXTERN) && (Pike_compiler->compiler_pass == 1)) { yywarning("Extern declared constant."); } if(!is_const($3)) { if(Pike_compiler->compiler_pass==2) yyerror("Constant definition is not constant."); else add_constant($1->u.sval.u.string, 0, Pike_compiler->current_modifiers & ~ID_EXTERN); } else { if(!Pike_compiler->num_parse_error) { ptrdiff_t tmp=eval_low($3); if(tmp < 1) { yyerror("Error in constant definition."); }else{ pop_n_elems(DO_NOT_WARN((INT32)(tmp - 1))); add_constant($1->u.sval.u.string, Pike_sp-1, Pike_compiler->current_modifiers & ~ID_EXTERN); pop_stack(); } } } if($3) free_node($3); free_node($1); } | bad_identifier '=' safe_expr0 { if ($3) free_node($3); } | error '=' safe_expr0 { if ($3) free_node($3); } ; constant_list: constant_name | constant_list ',' constant_name ; constant: modifiers TOK_CONSTANT constant_list ';' {} | modifiers TOK_CONSTANT error ';' { yyerrok; } | modifiers TOK_CONSTANT error TOK_LEX_EOF { yyerror("Missing ';'."); yyerror("Unexpected end of file."); } | modifiers TOK_CONSTANT error '}' { yyerror("Missing ';'."); } ; block_or_semi: block { $$ = check_node_hash(mknode(F_COMMA_EXPR,$1,mknode(F_RETURN,mkintnode(0),0))); } | ';' { $$ = NULL; } | TOK_LEX_EOF { yyerror("Expected ';'."); $$ = NULL; } | error { $$ = NULL; } ; type_or_error: simple_type { #ifdef PIKE_DEBUG check_type_string(check_node_hash($1)->u.sval.u.string); #endif /* PIKE_DEBUG */ if(Pike_compiler->compiler_frame->current_type) free_type(Pike_compiler->compiler_frame->current_type); copy_type(Pike_compiler->compiler_frame->current_type, $1->u.sval.u.type); free_node($1); } ; close_paren_or_missing: ')' { /* Used to hold line-number info */ $$ = mkintnode(0); } | /* empty */ { yyerror("Missing ')'."); /* Used to hold line-number info */ $$ = mkintnode(0); } ; close_brace_or_missing: '}' | /* empty */ { yyerror("Missing '}'."); } ; close_bracket_or_missing: ']' | /* empty */ { yyerror("Missing ']'."); } ; push_compiler_frame0: /* empty */ { push_compiler_frame(SCOPE_LOCAL); if(!Pike_compiler->compiler_frame->previous || !Pike_compiler->compiler_frame->previous->current_type) { yyerror("Internal compiler fault."); copy_type(Pike_compiler->compiler_frame->current_type, mixed_type_string); }else{ copy_type(Pike_compiler->compiler_frame->current_type, Pike_compiler->compiler_frame->previous->current_type); } } ; def: modifiers type_or_error optional_stars TOK_IDENTIFIER push_compiler_frame0 '(' arguments close_paren_or_missing { int e; /* construct the function type */ push_finished_type(Pike_compiler->compiler_frame->current_type); if ($3 && (Pike_compiler->compiler_pass == 2)) { yywarning("The *-syntax in types is obsolete. Use array instead."); } while(--$3>=0) push_type(T_ARRAY); if(Pike_compiler->compiler_frame->current_return_type) free_type(Pike_compiler->compiler_frame->current_return_type); Pike_compiler->compiler_frame->current_return_type=compiler_pop_type(); push_finished_type(Pike_compiler->compiler_frame->current_return_type); e=$7-1; if(Pike_compiler->varargs) { push_finished_type(Pike_compiler->compiler_frame->variable[e].type); e--; Pike_compiler->varargs=0; pop_type_stack(); }else{ push_type(T_VOID); } push_type(T_MANY); for(; e>=0; e--) { push_finished_type(Pike_compiler->compiler_frame->variable[e].type); } push_type(T_FUNCTION); { struct pike_string *s=compiler_pop_type(); int i = isidentifier($4->u.sval.u.string); if (Pike_compiler->compiler_pass == 1) { if ($1 & ID_VARIANT) { /* FIXME: Lookup the type of any existing variant */ /* Or the types. */ fprintf(stderr, "Pass %d: Identifier %s:\n", Pike_compiler->compiler_pass, $4->u.sval.u.string->str); if (i >= 0) { struct identifier *id = ID_FROM_INT(Pike_compiler->new_program, i); if (id) { struct pike_string *new_type; fprintf(stderr, "Defined, type:\n"); #ifdef PIKE_DEBUG simple_describe_type(id->type); #endif new_type = or_pike_types(s, id->type, 1); free_type(s); s = new_type; fprintf(stderr, "Resulting type:\n"); #ifdef PIKE_DEBUG simple_describe_type(s); #endif } else { my_yyerror("Lost identifier %s (%d).", $4->u.sval.u.string->str, i); } } else { fprintf(stderr, "Not defined.\n"); } fprintf(stderr, "New type:\n"); #ifdef PIKE_DEBUG simple_describe_type(s); #endif } } else { /* FIXME: Second pass reuses the type from the end of * the first pass if this is a variant function. */ if (i >= 0) { if (Pike_compiler->new_program->identifier_references[i].id_flags & ID_VARIANT) { struct identifier *id = ID_FROM_INT(Pike_compiler->new_program, i); fprintf(stderr, "Pass %d: Identifier %s:\n", Pike_compiler->compiler_pass, $4->u.sval.u.string->str); free_type(s); copy_type(s, id->type); fprintf(stderr, "Resulting type:\n"); #ifdef PIKE_DEBUG simple_describe_type(s); #endif } } else { my_yyerror("Identifier %s lost after first pass.", $4->u.sval.u.string->str); } } $<n>$=mkstrnode(s); free_type(s); } /* if(Pike_compiler->compiler_pass==1) */ { /* FIXME: * set current_function_number for local functions as well */ Pike_compiler->compiler_frame->current_function_number= define_function(check_node_hash($4)->u.sval.u.string, check_node_hash($<n>$)->u.sval.u.string, $1 & (~ID_EXTERN), IDENTIFIER_PIKE_FUNCTION, 0, OPT_EXTERNAL_DEPEND|OPT_SIDE_EFFECT); if ($1 & ID_VARIANT) { fprintf(stderr, "Function number: %d\n", Pike_compiler->compiler_frame->current_function_number); } } } block_or_semi { int e; if($10) { int f; node *check_args = NULL; int save_line = lex.current_line; int num_required_args = 0; struct identifier *i; #ifdef PIKE_DEBUG struct pike_string *save_file = lex.current_file; lex.current_file = $8->current_file; #endif /* PIKE_DEBUG */ lex.current_line = $8->line_number; if (($1 & ID_EXTERN) && (Pike_compiler->compiler_pass == 1)) { yywarning("Extern declared function definition."); } for(e=0; e<$7; e++) { if(!Pike_compiler->compiler_frame->variable[e].name || !Pike_compiler->compiler_frame->variable[e].name->len) { my_yyerror("Missing name for argument %d.",e); } else { if (Pike_compiler->compiler_pass == 2) { if ($1 & ID_VARIANT) { struct pike_string *arg_type = Pike_compiler->compiler_frame->variable[e].type; /* FIXME: Generate code that checks the arguments. */ /* If there is a bad argument, call the fallback, and return. */ if (! pike_types_le(void_type_string, arg_type)) { /* Argument my not be void. * ie it's required. */ num_required_args++; } } else { /* FIXME: Should probably use some other flag. */ if ((runtime_options & RUNTIME_CHECK_TYPES) && (Pike_compiler->compiler_frame->variable[e].type != mixed_type_string)) { node *local_node; /* fprintf(stderr, "Creating soft cast node for local #%d\n", e);*/ local_node = mklocalnode(e, 0); /* The following is needed to go around the optimization in * mksoftcastnode(). */ free_type(local_node->type); copy_type(local_node->type, mixed_type_string); check_args = mknode(F_COMMA_EXPR, check_args, mksoftcastnode(Pike_compiler->compiler_frame->variable[e].type, local_node)); } } } } } if ($1 & ID_VARIANT) { struct pike_string *bad_arg_str; MAKE_CONSTANT_SHARED_STRING(bad_arg_str, "Bad number of arguments!\n"); fprintf(stderr, "Required args: %d\n", num_required_args); check_args = mknode('?', mkopernode("`<", mkefuncallnode("query_num_arg", NULL), mkintnode(num_required_args)), mknode(':', mkefuncallnode("throw", mkefuncallnode("aggregate", mkstrnode(bad_arg_str))), NULL)); free_string(bad_arg_str); } if (check_args) { /* Prepend the arg checking code. */ $10 = mknode(F_COMMA_EXPR, mknode(F_POP_VALUE, check_args, NULL), $10); } lex.current_line = save_line; #ifdef PIKE_DEBUG lex.current_file = save_file; #endif /* PIKE_DEBUG */ f=dooptcode(check_node_hash($4)->u.sval.u.string, check_node_hash($10), check_node_hash($<n>9)->u.sval.u.string, $1); i = ID_FROM_INT(Pike_compiler->new_program, f); i->opt_flags = Pike_compiler->compiler_frame->opt_flags; if ($1 & ID_VARIANT) { fprintf(stderr, "Function number: %d\n", f); } #ifdef PIKE_DEBUG if(Pike_interpreter.recoveries && ((Pike_sp - Pike_interpreter.evaluator_stack) < Pike_interpreter.recoveries->stack_pointer)) fatal("Stack error (underflow)\n"); if((Pike_compiler->compiler_pass == 1) && (f != Pike_compiler->compiler_frame->current_function_number)) fatal("define_function screwed up! %d != %d\n", f, Pike_compiler->compiler_frame->current_function_number); #endif } pop_compiler_frame(); free_node($4); free_node($8); free_node($<n>9); } | modifiers type_or_error optional_stars TOK_IDENTIFIER push_compiler_frame0 error { pop_compiler_frame(); free_node($4); } | modifiers type_or_error optional_stars bad_identifier { free_type(compiler_pop_type()); } '(' arguments ')' block_or_semi { if ($9) free_node($9); } | modifiers type_or_error name_list ';' {} | inheritance {} | import {} | constant {} | class { free_node($1); } | error TOK_LEX_EOF { reset_type_stack(); yyerror("Missing ';'."); yyerror("Unexpected end of file"); } | error ';' { reset_type_stack(); yyerrok; /* if(Pike_compiler->num_parse_error>5) YYACCEPT; */ } | error '}' { reset_type_stack(); yyerror("Missing ';'."); /* yychar = '}'; */ /* Put the '}' back on the input stream */ } | modifiers '{' { $<number>$=lex.pragmas; lex.pragmas|=$1; } program '}' { lex.pragmas=$<number>3; } ; optional_dot_dot_dot: TOK_DOT_DOT_DOT { $$=1; } | TOK_DOT_DOT { yyerror("Range indicator ('..') where elipsis ('...') expected."); $$=1; } | /* empty */ { $$=0; } ; optional_identifier: TOK_IDENTIFIER | bad_identifier { $$=0; } | /* empty */ { $$=0; } ; new_arg_name: type7 optional_dot_dot_dot optional_identifier { if(Pike_compiler->varargs) yyerror("Can't define more arguments after ..."); if($2) { push_type(T_ARRAY); Pike_compiler->varargs=1; } if(!$3) { struct pike_string *s; MAKE_CONSTANT_SHARED_STRING(s,""); $3=mkstrnode(s); free_string(s); } if($3->u.sval.u.string->len && islocal($3->u.sval.u.string) >= 0) my_yyerror("Variable '%s' appears twice in argument list.", $3->u.sval.u.string->str); add_local_name($3->u.sval.u.string, compiler_pop_type(),0); free_node($3); } ; func_args: '(' arguments close_paren_or_missing { free_node($3); $$=$2; } ; arguments: /* empty */ optional_comma { $$=0; } | arguments2 optional_comma ; arguments2: new_arg_name { $$ = 1; } | arguments2 ',' new_arg_name { $$ = $1 + 1; } | arguments2 ':' new_arg_name { yyerror("Unexpected ':' in argument list."); $$ = $1 + 1; } ; modifier: TOK_NO_MASK { $$ = ID_NOMASK; } | TOK_FINAL_ID { $$ = ID_NOMASK; } | TOK_STATIC { $$ = ID_STATIC; } | TOK_EXTERN { $$ = ID_EXTERN; } | TOK_OPTIONAL { $$ = ID_OPTIONAL; } | TOK_PRIVATE { $$ = ID_PRIVATE | ID_STATIC; } | TOK_LOCAL_ID { $$ = ID_INLINE; } | TOK_PUBLIC { $$ = ID_PUBLIC; } | TOK_PROTECTED { $$ = ID_PROTECTED; } | TOK_INLINE { $$ = ID_INLINE; } | TOK_VARIANT { $$ = ID_VARIANT; } ; magic_identifiers1: TOK_NO_MASK { $$ = "nomask"; } | TOK_FINAL_ID { $$ = "final"; } | TOK_STATIC { $$ = "static"; } | TOK_EXTERN { $$ = "extern"; } | TOK_PRIVATE { $$ = "private"; } | TOK_LOCAL_ID { $$ = "local"; } | TOK_PUBLIC { $$ = "public"; } | TOK_PROTECTED { $$ = "protected"; } | TOK_INLINE { $$ = "inline"; } | TOK_OPTIONAL { $$ = "optional"; } | TOK_VARIANT { $$ = "variant"; } ; magic_identifiers2: TOK_VOID_ID { $$ = "void"; } | TOK_MIXED_ID { $$ = "mixed"; } | TOK_ARRAY_ID { $$ = "array"; } | TOK_MAPPING_ID { $$ = "mapping"; } | TOK_MULTISET_ID { $$ = "multiset"; } | TOK_OBJECT_ID { $$ = "object"; } | TOK_FUNCTION_ID { $$ = "function"; } | TOK_PROGRAM_ID { $$ = "program"; } | TOK_STRING_ID { $$ = "string"; } | TOK_FLOAT_ID { $$ = "float"; } | TOK_INT_ID { $$ = "int"; } ; magic_identifiers3: TOK_IF { $$ = "if"; } | TOK_DO { $$ = "do"; } | TOK_FOR { $$ = "for"; } | TOK_WHILE { $$ = "while"; } | TOK_ELSE { $$ = "else"; } | TOK_FOREACH { $$ = "foreach"; } | TOK_CATCH { $$ = "catch"; } | TOK_GAUGE { $$ = "gauge"; } | TOK_CLASS { $$ = "class"; } | TOK_BREAK { $$ = "break"; } | TOK_CASE { $$ = "case"; } | TOK_CONSTANT { $$ = "constant"; } | TOK_CONTINUE { $$ = "continue"; } | TOK_DEFAULT { $$ = "default"; } | TOK_IMPORT { $$ = "import"; } | TOK_INHERIT { $$ = "inherit"; } | TOK_LAMBDA { $$ = "lambda"; } | TOK_PREDEF { $$ = "predef"; } | TOK_RETURN { $$ = "return"; } | TOK_SSCANF { $$ = "sscanf"; } | TOK_SWITCH { $$ = "switch"; } | TOK_TYPEOF { $$ = "typeof"; } ; magic_identifiers: magic_identifiers1 | magic_identifiers2 | magic_identifiers3 ; magic_identifier: TOK_IDENTIFIER | magic_identifiers { struct pike_string *tmp=make_shared_string($1); $$=mkstrnode(tmp); free_string(tmp); } ; modifiers: modifier_list { $$=Pike_compiler->current_modifiers=$1 | (lex.pragmas & ID_MODIFIER_MASK); } ; modifier_list: /* empty */ { $$ = 0; } | modifier modifier_list { $$ = $1 | $2; } ; optional_stars: optional_stars '*' { $$=$1 + 1; } | /* empty */ { $$=0; } ; cast: '(' type ')' { struct pike_string *s=compiler_pop_type(); $$=mkstrnode(s); free_type(s); } ; soft_cast: '[' type ']' { struct pike_string *s=compiler_pop_type(); $$=mkstrnode(s); free_type(s); } ; type6: type | identifier_type ; type: type '*' { if (Pike_compiler->compiler_pass == 2) { yywarning("The *-syntax in types is obsolete. Use array instead."); } push_type(T_ARRAY); } | type2 ; type7: type7 '*' { if (Pike_compiler->compiler_pass == 2) { yywarning("The *-syntax in types is obsolete. Use array instead."); } push_type(T_ARRAY); } | type4 ; simple_type: type4 { struct pike_string *s=compiler_pop_type(); $$=mkstrnode(s); #ifdef PIKE_DEBUG if ($$->u.sval.u.string != s) { fatal("mkstrnode(%p:\"%s\") created node with %p:\"%s\"\n", s, s->str, $$->u.sval.u.string, $$->u.sval.u.string->str); } #endif /* PIKE_DEBUG */ free_type(s); } ; simple_type2: type2 { struct pike_string *s=compiler_pop_type(); $$=mkstrnode(s); #ifdef PIKE_DEBUG if ($$->u.sval.u.string != s) { fatal("mkstrnode(%p:\"%s\") created node with %p:\"%s\"\n", s, s->str, $$->u.sval.u.string, $$->u.sval.u.string->str); } #endif /* PIKE_DEBUG */ free_type(s); } ; simple_identifier_type: identifier_type { struct pike_string *s=compiler_pop_type(); $$=mkstrnode(s); #ifdef PIKE_DEBUG if ($$->u.sval.u.string != s) { fatal("mkstrnode(%p:\"%s\") created node with %p:\"%s\"\n", s, s->str, $$->u.sval.u.string, $$->u.sval.u.string->str); } #endif /* PIKE_DEBUG */ free_type(s); } ; identifier_type: idents { resolv_constant($1); if (Pike_sp[-1].type == T_TYPE) { /* "typedef" */ push_finished_type(Pike_sp[-1].u.string); } else { /* object type */ struct program *p = NULL; if (Pike_sp[-1].type == T_OBJECT) { if(!Pike_sp[-1].u.object->prog) { pop_stack(); push_int(0); yyerror("Destructed object used as program identifier."); }else{ extern void f_object_program(INT32); f_object_program(1); } } switch(Pike_sp[-1].type) { case T_FUNCTION: if((p = program_from_function(Pike_sp-1))) break; default: if (Pike_compiler->compiler_pass!=1) yyerror("Illegal program identifier."); pop_stack(); push_int(0); break; case T_PROGRAM: p = Pike_sp[-1].u.program; break; } if(p) { push_type_int(p->id); }else{ push_type_int(0); } push_type(0); push_type(T_OBJECT); } pop_stack(); free_node($1); } ; type4: type4 '|' type8 { push_type(T_OR); } | type8 ; type2: type2 '|' type3 { push_type(T_OR); } | type3 ; type3: TOK_INT_ID opt_int_range { push_type(T_INT); } | TOK_FLOAT_ID { push_type(T_FLOAT); } | TOK_PROGRAM_ID { push_type(T_PROGRAM); } | TOK_VOID_ID { push_type(T_VOID); } | TOK_MIXED_ID { push_type(T_MIXED); } | TOK_STRING_ID { push_type(T_STRING); } | TOK_OBJECT_ID opt_object_type { push_type(T_OBJECT); } | TOK_MAPPING_ID opt_mapping_type { push_type(T_MAPPING); } | TOK_ARRAY_ID opt_array_type { push_type(T_ARRAY); } | TOK_MULTISET_ID opt_array_type { push_type(T_MULTISET); } | TOK_FUNCTION_ID opt_function_type { push_type(T_FUNCTION); } ; type8: type3 | identifier_type ; number_or_maxint: /* Empty */ { $$ = mkintnode(MAX_INT32); } | TOK_NUMBER | '-' TOK_NUMBER { #ifdef PIKE_DEBUG if (($2->token != F_CONSTANT) || ($2->u.sval.type != T_INT)) { fatal("Unexpected number in negative int-range.\n"); } #endif /* PIKE_DEBUG */ $$ = mkintnode(-($2->u.sval.u.integer)); free_node($2); } ; number_or_minint: /* Empty */ { $$ = mkintnode(MIN_INT32); } | TOK_NUMBER | '-' TOK_NUMBER { #ifdef PIKE_DEBUG if (($2->token != F_CONSTANT) || ($2->u.sval.type != T_INT)) { fatal("Unexpected number in negative int-range.\n"); } #endif /* PIKE_DEBUG */ $$ = mkintnode(-($2->u.sval.u.integer)); free_node($2); } ; expected_dot_dot: TOK_DOT_DOT | TOK_DOT_DOT_DOT { yyerror("Elipsis ('...') where range indicator ('..') expected."); } ; opt_int_range: /* Empty */ { push_type_int(MAX_INT32); push_type_int(MIN_INT32); } | '(' number_or_minint expected_dot_dot number_or_maxint ')' { /* FIXME: Check that $4 is >= $2. */ if($4->token == F_CONSTANT && $4->u.sval.type == T_INT) { push_type_int($4->u.sval.u.integer); }else{ push_type_int(MAX_INT32); } if($2->token == F_CONSTANT && $2->u.sval.type == T_INT) { push_type_int($2->u.sval.u.integer); }else{ push_type_int(MIN_INT32); } free_node($2); free_node($4); } ; opt_object_type: /* Empty */ { push_type_int(0); push_type(0); } | '(' program_ref ')' { /* NOTE: On entry, there are two items on the stack: * Pike_sp-2: Name of the program reference (string). * Pike_sp-1: The resolved program (program|function|zero). */ struct program *p=program_from_svalue(Pike_sp-1); if(p) { push_type_int(p->id); }else{ if (Pike_compiler->compiler_pass!=1) { if ((Pike_sp[-2].type == T_STRING) && (Pike_sp[-2].u.string->len > 0) && (Pike_sp[-2].u.string->len < 256)) { my_yyerror("Not a valid program specifier: '%s'", Pike_sp[-2].u.string->str); } else { yyerror("Not a valid program specifier."); } } push_type_int(0); } pop_n_elems(2); push_type(0); } ; opt_function_type: '(' { type_stack_mark(); type_stack_mark(); } function_type_list optional_dot_dot_dot ':' { if ($4) { if ($3) { push_type(T_MANY); type_stack_reverse(); } else { /* function_type_list ends with a comma, or is empty. * FIXME: Should this be a syntax error or not? */ if (Pike_compiler->compiler_pass == 1) { yyerror("Missing type before ... ."); } type_stack_reverse(); push_type(T_MANY); push_type(T_MIXED); } }else{ type_stack_reverse(); push_type(T_MANY); push_type(T_VOID); } type_stack_mark(); } type7 ')' { type_stack_reverse(); type_stack_reverse(); } | /* empty */ { push_type(T_MIXED); push_type(T_VOID); push_type(T_OR); push_type(T_ZERO); push_type(T_VOID); push_type(T_OR); push_type(T_MANY); } ; function_type_list: /* Empty */ optional_comma { $$=0; } | function_type_list2 optional_comma { $$=!$2; } ; function_type_list2: type7 { $$=1; } | function_type_list2 ',' { type_stack_reverse(); type_stack_mark(); } type7 ; opt_array_type: '(' type7 ')' | { push_type(T_MIXED); } ; opt_mapping_type: '(' { type_stack_mark(); type_stack_mark(); } type7 ':' { type_stack_reverse(); type_stack_mark(); } type7 { type_stack_reverse(); type_stack_reverse(); } ')' | /* empty */ { push_type(T_MIXED); push_type(T_MIXED); } ; name_list: new_name | name_list ',' new_name ; new_name: optional_stars TOK_IDENTIFIER { struct pike_string *type; push_finished_type(Pike_compiler->compiler_frame->current_type); if ($1 && (Pike_compiler->compiler_pass == 2)) { yywarning("The *-syntax in types is obsolete. Use array instead."); } while($1--) push_type(T_ARRAY); type=compiler_pop_type(); define_variable($2->u.sval.u.string, type, Pike_compiler->current_modifiers); free_type(type); free_node($2); } | optional_stars bad_identifier {} | optional_stars TOK_IDENTIFIER '=' { struct pike_string *type; push_finished_type(Pike_compiler->compiler_frame->current_type); if ($1 && (Pike_compiler->compiler_pass == 2)) { yywarning("The *-syntax in types is obsolete. Use array instead."); } while($1--) push_type(T_ARRAY); type=compiler_pop_type(); if ((Pike_compiler->current_modifiers & ID_EXTERN) && (Pike_compiler->compiler_pass == 1)) { yywarning("Extern declared variable has initializer."); } $<number>$=define_variable($2->u.sval.u.string, type, Pike_compiler->current_modifiers & (~ID_EXTERN)); free_type(type); } expr0 { Pike_compiler->init_node=mknode(F_COMMA_EXPR,Pike_compiler->init_node, mkcastnode(void_type_string, mknode(F_ASSIGN,$5, mkidentifiernode($<number>4)))); free_node($2); } | optional_stars TOK_IDENTIFIER '=' error { free_node($2); } | optional_stars TOK_IDENTIFIER '=' TOK_LEX_EOF { yyerror("Unexpected end of file in variable definition."); free_node($2); } | optional_stars bad_identifier '=' expr0 { free_node($4); } ; new_local_name: optional_stars TOK_IDENTIFIER { push_finished_type($<n>0->u.sval.u.string); if ($1 && (Pike_compiler->compiler_pass == 2)) { yywarning("The *-syntax in types is obsolete. Use array instead."); } while($1--) push_type(T_ARRAY); add_local_name($2->u.sval.u.string, compiler_pop_type(),0); $$=mknode(F_ASSIGN,mkintnode(0),mklocalnode(islocal($2->u.sval.u.string),0)); free_node($2); } | optional_stars bad_identifier { $$=0; } | optional_stars TOK_IDENTIFIER '=' expr0 { push_finished_type($<n>0->u.sval.u.string); if ($1 && (Pike_compiler->compiler_pass == 2)) { yywarning("The *-syntax in types is obsolete. Use array instead."); } while($1--) push_type(T_ARRAY); add_local_name($2->u.sval.u.string, compiler_pop_type(),0); $$=mknode(F_ASSIGN,$4,mklocalnode(islocal($2->u.sval.u.string),0)); free_node($2); } | optional_stars bad_identifier '=' expr0 { free_node($4); $$=0; } | optional_stars TOK_IDENTIFIER '=' error { free_node($2); /* No yyerok here since we aren't done yet. */ $$=0; } | optional_stars TOK_IDENTIFIER '=' TOK_LEX_EOF { yyerror("Unexpected end of file in local variable definition."); free_node($2); /* No yyerok here since we aren't done yet. */ $$=0; } ; new_local_name2: TOK_IDENTIFIER { add_ref($<n>0->u.sval.u.string); add_local_name($1->u.sval.u.string, $<n>0->u.sval.u.string, 0); $$=mknode(F_ASSIGN,mkintnode(0),mklocalnode(islocal($1->u.sval.u.string),0)); free_node($1); } | bad_identifier { $$=0; } | TOK_IDENTIFIER '=' safe_expr0 { add_ref($<n>0->u.sval.u.string); add_local_name($1->u.sval.u.string, $<n>0->u.sval.u.string, 0); $$=mknode(F_ASSIGN,$3, mklocalnode(islocal($1->u.sval.u.string),0)); free_node($1); } | bad_identifier '=' safe_expr0 { $$=$3; } ; block:'{' { $<number>1=Pike_compiler->num_used_modules; $<number>$=Pike_compiler->compiler_frame->current_number_of_locals; } { /* Trick to store more than one number on compiler stack - Hubbe */ $<number>$=Pike_compiler->compiler_frame->last_block_level; if($<number>$ == -1) /* if 'first block' */ Pike_compiler->compiler_frame->last_block_level=0; /* all variables */ else Pike_compiler->compiler_frame->last_block_level=$<number>2; } statements end_block { unuse_modules(Pike_compiler->num_used_modules - $<number>1); pop_local_variables($<number>2); Pike_compiler->compiler_frame->last_block_level=$<number>3; $$=$4; } ; end_block: '}' | TOK_LEX_EOF { yyerror("Missing '}'."); yyerror("Unexpected end of file."); } ; failsafe_block: block | error { $$=0; } | TOK_LEX_EOF { yyerror("Unexpected end of file."); $$=0; } ; local_name_list: new_local_name | local_name_list ',' { $<n>$=$<n>0; } new_local_name { $$=mknode(F_COMMA_EXPR,mkcastnode(void_type_string,$1),$4); } ; local_name_list2: new_local_name2 | local_name_list2 ',' { $<n>$=$<n>0; } new_local_name { $$=mknode(F_COMMA_EXPR,mkcastnode(void_type_string,$1),$4); } ; local_constant_name: TOK_IDENTIFIER '=' safe_expr0 { struct pike_string *type; /* Ugly hack to make sure that $3 is optimized */ { int tmp=Pike_compiler->compiler_pass; $3=mknode(F_COMMA_EXPR,$3,0); Pike_compiler->compiler_pass=tmp; type=$3->u.node.a->type; } if(!is_const($3)) { if(Pike_compiler->compiler_pass==2) yyerror("Constant definition is not constant."); }else{ ptrdiff_t tmp=eval_low($3); if(tmp < 1) { yyerror("Error in constant definition."); }else{ pop_n_elems(DO_NOT_WARN((INT32)(tmp - 1))); if($3) free_node($3); $3=mksvaluenode(Pike_sp-1); type=$3->type; pop_stack(); } } if(!type) type=mixed_type_string; add_ref(type); low_add_local_name(Pike_compiler->compiler_frame, /*->previous,*/ $1->u.sval.u.string, type, $3); free_node($1); } | bad_identifier '=' safe_expr0 { if ($3) free_node($3); } | error '=' safe_expr0 { if ($3) free_node($3); } ; local_constant_list: local_constant_name | local_constant_list ',' local_constant_name ; local_constant: TOK_CONSTANT local_constant_list ';' | TOK_CONSTANT error ';' { yyerrok; } | TOK_CONSTANT error TOK_LEX_EOF { yyerror("Missing ';'."); yyerror("Unexpected end of file."); } | TOK_CONSTANT error '}' { yyerror("Missing ';'."); } ; statements: { $$=0; } | statements statement { $$=mknode(F_COMMA_EXPR,$1,mkcastnode(void_type_string,$2)); } ; normal_label_statement: unused2 ';' | import { $$=0; } | cond | return expected_semicolon | local_constant { $$=0; } | block | break expected_semicolon | continue expected_semicolon | error ';' { reset_type_stack(); $$=0; yyerrok; } | error TOK_LEX_EOF { reset_type_stack(); yyerror("Missing ';'."); yyerror("Unexpected end of file."); $$=0; } | error '}' { reset_type_stack(); yyerror("Missing ';'."); /* yychar = '}'; */ /* Put the '}' back on the input stream. */ $$=0; } | ';' { $$=0; } ; statement: normal_label_statement { Pike_compiler->compiler_frame->opt_flags &= ~OPT_CUSTOM_LABELS; } | while | do | for | foreach | switch | case | default | labeled_statement ; labeled_statement: TOK_IDENTIFIER { $<number>$ = lex.current_line; Pike_compiler->compiler_frame->opt_flags &= ~OPT_CUSTOM_LABELS; } ':' statement { $$ = mknode(Pike_compiler->compiler_frame->opt_flags & OPT_CUSTOM_LABELS ? F_CUSTOM_STMT_LABEL : F_NORMAL_STMT_LABEL, $1, $4); /* FIXME: This won't be correct if the node happens to be shared. * That's an issue to be solved with shared nodes in general, * though. */ $$->line_number = $<number>2; } ; optional_label: TOK_IDENTIFIER | /* empty */ {$$ = 0;} ; break: TOK_BREAK optional_label { $$=mknode(F_BREAK,$2,0); } ; default: TOK_DEFAULT ':' { $$=mknode(F_DEFAULT,0,0); } | TOK_DEFAULT { $$=mknode(F_DEFAULT,0,0); yyerror("Expected ':' after default."); } ; continue: TOK_CONTINUE optional_label { $$=mknode(F_CONTINUE,$2,0); } ; push_compiler_frame1: /* empty */ { push_compiler_frame(SCOPE_LOCAL); } ; lambda: TOK_LAMBDA push_compiler_frame1 { debug_malloc_touch(Pike_compiler->compiler_frame->current_return_type); if(Pike_compiler->compiler_frame->current_return_type) free_type(Pike_compiler->compiler_frame->current_return_type); copy_type(Pike_compiler->compiler_frame->current_return_type, any_type_string); } func_args { $<number>$ = Pike_compiler->varargs; Pike_compiler->varargs = 0; } failsafe_block { struct pike_string *type; char buf[40]; int f,e; struct pike_string *name; debug_malloc_touch($6); $6=mknode(F_COMMA_EXPR,$6,mknode(F_RETURN,mkintnode(0),0)); type=find_return_type($6); if(type) { push_finished_type(type); free_type(type); } else push_type(T_MIXED); e=$4-1; if($<number>5) { push_finished_type(Pike_compiler->compiler_frame->variable[e].type); e--; pop_type_stack(); }else{ push_type(T_VOID); } Pike_compiler->varargs=0; push_type(T_MANY); for(; e>=0; e--) push_finished_type(Pike_compiler->compiler_frame->variable[e].type); push_type(T_FUNCTION); type=compiler_pop_type(); sprintf(buf,"__lambda_%ld_%ld", (long)Pike_compiler->new_program->id, (long)(Pike_compiler->local_class_counter++ & 0xffffffff)); /* OSF/1 cc bug. */ name=make_shared_string(buf); #ifdef LAMBDA_DEBUG fprintf(stderr, "%d: LAMBDA: %s 0x%08lx 0x%08lx\n", Pike_compiler->compiler_pass, buf, (long)Pike_compiler->new_program->id, Pike_compiler->local_class_counter-1); #endif /* LAMBDA_DEBUG */ f=dooptcode(name, $6, type, ID_STATIC | ID_PRIVATE | ID_INLINE); if(Pike_compiler->compiler_frame->lexical_scope & SCOPE_SCOPED) { $$ = mktrampolinenode(f); } else { $$ = mkidentifiernode(f); } free_string(name); free_type(type); pop_compiler_frame(); } | TOK_LAMBDA push_compiler_frame1 error { pop_compiler_frame(); $$ = mkintnode(0); } ; local_function: TOK_IDENTIFIER push_compiler_frame1 func_args { char buf[40]; struct pike_string *name,*type; int id,e; node *n; struct identifier *i=0; debug_malloc_touch(Pike_compiler->compiler_frame->current_return_type); if(Pike_compiler->compiler_frame->current_return_type) free_type(Pike_compiler->compiler_frame->current_return_type); copy_type(Pike_compiler->compiler_frame->current_return_type, $<n>0->u.sval.u.type); /***/ push_finished_type(Pike_compiler->compiler_frame->current_return_type); e=$3-1; if(Pike_compiler->varargs) { push_finished_type(Pike_compiler->compiler_frame->variable[e].type); e--; Pike_compiler->varargs=0; pop_type_stack(); }else{ push_type(T_VOID); } push_type(T_MANY); for(; e>=0; e--) push_finished_type(Pike_compiler->compiler_frame->variable[e].type); push_type(T_FUNCTION); type=compiler_pop_type(); /***/ sprintf(buf,"__lambda_%ld_%ld", (long)Pike_compiler->new_program->id, (long)(Pike_compiler->local_class_counter++ & 0xffffffff)); /* OSF/1 cc bug. */ #ifdef LAMBDA_DEBUG fprintf(stderr, "%d: LAMBDA: %s 0x%08lx 0x%08lx\n", Pike_compiler->compiler_pass, buf, (long)Pike_compiler->new_program->id, Pike_compiler->local_class_counter-1); #endif /* LAMBDA_DEBUG */ name=make_shared_string(buf); id=define_function(name, type, 0, IDENTIFIER_PIKE_FUNCTION, 0, OPT_SIDE_EFFECT|OPT_EXTERNAL_DEPEND); n=0; #if 0 if(Pike_compiler->compiler_pass > 1 && (i=ID_FROM_INT(Pike_compiler->new_program, id))) if(!(i->identifier_flags & IDENTIFIER_SCOPED)) n = mkidentifiernode(id); #endif low_add_local_name(Pike_compiler->compiler_frame->previous, $1->u.sval.u.string, type, n); $<number>$=id; free_string(name); } failsafe_block { int localid; struct identifier *i=ID_FROM_INT(Pike_compiler->new_program, $<number>4); $5=mknode(F_COMMA_EXPR,$5,mknode(F_RETURN,mkintnode(0),0)); debug_malloc_touch($5); dooptcode(i->name, $5, i->type, ID_STATIC | ID_PRIVATE | ID_INLINE); i->opt_flags = Pike_compiler->compiler_frame->opt_flags; pop_compiler_frame(); free_node($1); /* WARNING: If the local function adds more variables we are screwed */ /* WARNING2: if add_local_name stops adding local variables at the end, * this has to be fixed. */ localid=Pike_compiler->compiler_frame->current_number_of_locals-1; if(Pike_compiler->compiler_frame->variable[localid].def) { $$=copy_node(Pike_compiler->compiler_frame->variable[localid].def); }else{ if(Pike_compiler->compiler_frame->lexical_scope & (SCOPE_SCOPE_USED | SCOPE_SCOPED)) { $$ = mknode(F_ASSIGN, mktrampolinenode($<number>3), mklocalnode(localid,0)); }else{ $$ = mknode(F_ASSIGN, mkidentifiernode($<number>3), mklocalnode(localid,0)); } } } | TOK_IDENTIFIER push_compiler_frame1 error { pop_compiler_frame(); $$=mkintnode(0); } ; local_function2: optional_stars TOK_IDENTIFIER push_compiler_frame1 func_args { char buf[40]; struct pike_string *name,*type; int id,e; node *n; struct identifier *i=0; /***/ debug_malloc_touch(Pike_compiler->compiler_frame->current_return_type); push_finished_type($<n>0->u.sval.u.string); if ($1 && (Pike_compiler->compiler_pass == 2)) { yywarning("The *-syntax in types is obsolete. Use array instead."); } while($1--) push_type(T_ARRAY); if(Pike_compiler->compiler_frame->current_return_type) free_type(Pike_compiler->compiler_frame->current_return_type); Pike_compiler->compiler_frame->current_return_type=compiler_pop_type(); /***/ push_finished_type(Pike_compiler->compiler_frame->current_return_type); e=$4-1; if(Pike_compiler->varargs) { push_finished_type(Pike_compiler->compiler_frame->variable[e].type); e--; Pike_compiler->varargs=0; pop_type_stack(); }else{ push_type(T_VOID); } push_type(T_MANY); for(; e>=0; e--) push_finished_type(Pike_compiler->compiler_frame->variable[e].type); push_type(T_FUNCTION); type=compiler_pop_type(); /***/ sprintf(buf,"__lambda_%ld_%ld", (long)Pike_compiler->new_program->id, (long)(Pike_compiler->local_class_counter++ & 0xffffffff)); /* OSF/1 cc bug. */ #ifdef LAMBDA_DEBUG fprintf(stderr, "%d: LAMBDA: %s 0x%08lx 0x%08lx\n", Pike_compiler->compiler_pass, buf, (long)Pike_compiler->new_program->id, Pike_compiler->local_class_counter-1); #endif /* LAMBDA_DEBUG */ name=make_shared_string(buf); id=define_function(name, type, 0, IDENTIFIER_PIKE_FUNCTION, 0, OPT_SIDE_EFFECT|OPT_EXTERNAL_DEPEND); n=0; #if 0 if(Pike_compiler->compiler_pass > 1 && (i=ID_FROM_INT(Pike_compiler->new_program, id))) if(!(i->identifier_flags & IDENTIFIER_SCOPED)) n = mkidentifiernode(id); #endif low_add_local_name(Pike_compiler->compiler_frame->previous, $2->u.sval.u.string, type, n); $<number>$=id; free_string(name); } failsafe_block { int localid; struct identifier *i=ID_FROM_INT(Pike_compiler->new_program, $<number>5); debug_malloc_touch($6); $6=mknode(F_COMMA_EXPR,$6,mknode(F_RETURN,mkintnode(0),0)); debug_malloc_touch($6); dooptcode(i->name, $6, i->type, ID_STATIC | ID_PRIVATE | ID_INLINE); i->opt_flags = Pike_compiler->compiler_frame->opt_flags; pop_compiler_frame(); free_node($2); /* WARNING: If the local function adds more variables we are screwed */ /* WARNING2: if add_local_name stops adding local variables at the end, * this has to be fixed. */ localid=Pike_compiler->compiler_frame->current_number_of_locals-1; if(Pike_compiler->compiler_frame->variable[localid].def) { $$=copy_node(Pike_compiler->compiler_frame->variable[localid].def); }else{ if(Pike_compiler->compiler_frame->lexical_scope & (SCOPE_SCOPE_USED | SCOPE_SCOPED)) { $$ = mknode(F_ASSIGN, mktrampolinenode($<number>5), mklocalnode(localid,0)); }else{ $$ = mknode(F_ASSIGN, mkidentifiernode($<number>5), mklocalnode(localid,0)); } } } | optional_stars TOK_IDENTIFIER push_compiler_frame1 error { pop_compiler_frame(); free_node($2); $$=mkintnode(0); } ; create_arg: modifiers type_or_error optional_stars TOK_IDENTIFIER { struct pike_string *type; push_finished_type(Pike_compiler->compiler_frame->current_type); if ($3 && (Pike_compiler->compiler_pass == 2)) { yywarning("The *-syntax in types is obsolete. Use array instead."); } while($3--) push_type(T_ARRAY); type=compiler_pop_type(); if(islocal($4->u.sval.u.string) >= 0) my_yyerror("Variable '%s' appears twice in create argument list.", $4->u.sval.u.string->str); /* Add the identifier both globally and locally. */ define_variable($4->u.sval.u.string, type, Pike_compiler->current_modifiers); add_local_name($4->u.sval.u.string, type, 0); /* free_type(type); */ free_node($4); $$=0; } | modifiers type_or_error optional_stars bad_identifier { $$=0; } ; create_arguments2: create_arg { $$ = 1; } | create_arguments2 ',' create_arg { $$ = $1 + 1; } | create_arguments2 ':' create_arg { yyerror("Unexpected ':' in create argument list."); $$ = $1 + 1; } ; create_arguments: /* empty */ optional_comma { $$=0; } | create_arguments2 optional_comma ; push_compiler_frame01: /* empty */ { push_compiler_frame(SCOPE_LOCAL); } ; optional_create_arguments: /* empty */ { $$ = 0; } | '(' push_compiler_frame01 create_arguments close_paren_or_missing { int e; node *create_code = NULL; struct pike_string *type = NULL; struct pike_string *create_string = NULL; int f; MAKE_CONSTANT_SHARED_STRING(create_string, "create"); /* First: Deduce the type for the create() function. */ push_type(T_VOID); /* Return type. */ push_type(T_VOID); /* Not varargs. */ push_type(T_MANY); for(e = $3-1; e>=0; e--) { push_finished_type(Pike_compiler->compiler_frame->variable[e].type); } push_type(T_FUNCTION); type = compiler_pop_type(); /* Second: Declare the function. */ Pike_compiler->compiler_frame->current_function_number= define_function(create_string, type, ID_STATIC, IDENTIFIER_PIKE_FUNCTION, 0, OPT_SIDE_EFFECT); /* Third: Generate the initialization code. * * global_arg = [type]local_arg; * [,..] */ for(e=0; e<$3; e++) { if(!Pike_compiler->compiler_frame->variable[e].name || !Pike_compiler->compiler_frame->variable[e].name->len) { my_yyerror("Missing name for argument %d.",e); } else { node *local_node = mklocalnode(e, 0); /* FIXME: Should probably use some other flag. */ if ((runtime_options & RUNTIME_CHECK_TYPES) && (Pike_compiler->compiler_pass == 2) && (Pike_compiler->compiler_frame->variable[e].type != mixed_type_string)) { /* fprintf(stderr, "Creating soft cast node for local #%d\n", e);*/ /* The following is needed to go around the optimization in * mksoftcastnode(). */ free_type(local_node->type); copy_type(local_node->type, mixed_type_string); local_node = mksoftcastnode(Pike_compiler->compiler_frame-> variable[e].type, local_node); } create_code = mknode(F_COMMA_EXPR, create_code, mknode(F_ASSIGN, local_node, mkidentifiernode(isidentifier(Pike_compiler-> compiler_frame-> variable[e].name)))); } } /* Fourth: Add a return 0; at the end. */ create_code = mknode(F_COMMA_EXPR, mknode(F_POP_VALUE, create_code, NULL), mknode(F_RETURN, mkintnode(0), NULL)); /* Fifth: Define the function. */ f=dooptcode(create_string, check_node_hash(create_code), type, ID_STATIC); #ifdef PIKE_DEBUG if(Pike_interpreter.recoveries && Pike_sp-Pike_interpreter.evaluator_stack < Pike_interpreter.recoveries->stack_pointer) fatal("Stack error (underflow)\n"); if(Pike_compiler->compiler_pass == 1 && f!=Pike_compiler->compiler_frame->current_function_number) fatal("define_function screwed up! %d != %d\n", f, Pike_compiler->compiler_frame->current_function_number); #endif /* Done. */ pop_compiler_frame(); free_node($4); free_type(type); free_string(create_string); } ; failsafe_program: '{' program end_block | error { yyerrok; } | TOK_LEX_EOF { yyerror("End of file where program definition expected."); } ; class: modifiers TOK_CLASS optional_identifier { extern int num_parse_error; int num_errors=Pike_compiler->num_parse_error; if(!$3) { struct pike_string *s; char buffer[42]; sprintf(buffer,"__class_%ld_%ld",(long)Pike_compiler->new_program->id, (long)Pike_compiler->local_class_counter++); s=make_shared_string(buffer); $3=mkstrnode(s); free_string(s); $1|=ID_STATIC | ID_PRIVATE | ID_INLINE; } /* fprintf(stderr, "LANGUAGE.YACC: CLASS start\n"); */ if(Pike_compiler->compiler_pass==1) { if ($1 & ID_EXTERN) { yywarning("Extern declared class definition."); } low_start_new_program(0, $3->u.sval.u.string, $1, &$<number>$); /* fprintf(stderr, "Pass 1: Program %s has id %d\n", $3->u.sval.u.string->str, Pike_compiler->new_program->id); */ if(lex.current_file) { store_linenumber(lex.current_line, lex.current_file); debug_malloc_name(Pike_compiler->new_program, lex.current_file->str, lex.current_line); } }else{ int i; struct program *p; struct identifier *id; int tmp=Pike_compiler->compiler_pass; i=isidentifier($3->u.sval.u.string); if(i<0) { low_start_new_program(Pike_compiler->new_program,0, $1, &$<number>$); yyerror("Pass 2: program not defined!"); }else{ id=ID_FROM_INT(Pike_compiler->new_program, i); if(IDENTIFIER_IS_CONSTANT(id->identifier_flags)) { struct svalue *s; s=&PROG_FROM_INT(Pike_compiler->new_program,i)->constants[id->func.offset].sval; if(s->type==T_PROGRAM) { low_start_new_program(s->u.program, $3->u.sval.u.string, $1, &$<number>$); /* fprintf(stderr, "Pass 2: Program %s has id %d\n", $3->u.sval.u.string->str, Pike_compiler->new_program->id); */ }else{ yyerror("Pass 2: constant redefined!"); low_start_new_program(Pike_compiler->new_program, 0, $1, &$<number>$); } }else{ yyerror("Pass 2: class constant no longer constant!"); low_start_new_program(Pike_compiler->new_program, 0, $1, &$<number>$); } } Pike_compiler->compiler_pass=tmp; } Pike_compiler->num_parse_error=num_errors; /* Kluge to prevent gazillion error messages */ } optional_create_arguments failsafe_program { struct program *p; if(Pike_compiler->compiler_pass == 1) p=end_first_pass(0); else p=end_first_pass(1); /* fprintf(stderr, "LANGUAGE.YACC: CLASS end\n"); */ if(!p) { yyerror("Class definition failed."); }else{ free_program(p); } $$=mkidentifiernode($<number>4); free_node($3); check_tree($$,0); } ; cond: TOK_IF { $<number>$=Pike_compiler->compiler_frame->current_number_of_locals; } { /* Trick to store more than one number on compiler stack - Hubbe */ $<number>$=Pike_compiler->compiler_frame->last_block_level; Pike_compiler->compiler_frame->last_block_level=$<number>2; } '(' safe_comma_expr end_cond statement optional_else_part { $$=mknode('?',$5,mknode(':',$7,$8)); $$->line_number=$1; $$=mkcastnode(void_type_string,$$); $$->line_number=$1; pop_local_variables($<number>2); Pike_compiler->compiler_frame->last_block_level=$<number>3; } ; end_cond: ')' | '}' { yyerror("Missing ')'."); } | TOK_LEX_EOF { yyerror("Missing ')'."); yyerror("Unexpected end of file."); } ; optional_else_part: { $$=0; } | TOK_ELSE statement { $$=$2; } ; safe_lvalue: lvalue | error { $$=0; } ; safe_expr0: expr0 | TOK_LEX_EOF { yyerror("Unexpected end of file."); $$=0; } | error { $$=0; } ; foreach: TOK_FOREACH { $<number>$=Pike_compiler->compiler_frame->current_number_of_locals; } { /* Trick to store more than one number on compiler stack - Hubbe */ $<number>$=Pike_compiler->compiler_frame->last_block_level; Pike_compiler->compiler_frame->last_block_level=$<number>2; } '(' expr0 ',' safe_lvalue end_cond statement { if ($7) { $$=mknode(F_FOREACH, mknode(F_VAL_LVAL,$5,$7),$9); $$->line_number=$1; } else { /* Error in lvalue */ free_node($5); $$=$9; } pop_local_variables($<number>2); Pike_compiler->compiler_frame->last_block_level=$<number>3; Pike_compiler->compiler_frame->opt_flags |= OPT_CUSTOM_LABELS; } ; do: TOK_DO statement TOK_WHILE '(' safe_comma_expr end_cond expected_semicolon { $$=mknode(F_DO,$2,$5); $$->line_number=$1; Pike_compiler->compiler_frame->opt_flags |= OPT_CUSTOM_LABELS; } | TOK_DO statement TOK_WHILE TOK_LEX_EOF { $$=0; yyerror("Missing '(' in do-while loop."); yyerror("Unexpected end of file."); } | TOK_DO statement TOK_LEX_EOF { $$=0; yyerror("Missing 'while' in do-while loop."); yyerror("Unexpected end of file."); } ; expected_semicolon: ';' | TOK_LEX_EOF { yyerror("Missing ';'."); yyerror("Unexpected end of file."); } ; for: TOK_FOR { $<number>$=Pike_compiler->compiler_frame->current_number_of_locals; } { /* Trick to store more than one number on compiler stack - Hubbe */ $<number>$=Pike_compiler->compiler_frame->last_block_level; Pike_compiler->compiler_frame->last_block_level=$<number>2; } '(' unused expected_semicolon for_expr expected_semicolon unused end_cond statement { int i=lex.current_line; lex.current_line=$1; $$=mknode(F_COMMA_EXPR, mkcastnode(void_type_string,$5), mknode(F_FOR,$7,mknode(':',$11,$9))); lex.current_line=i; pop_local_variables($<number>2); Pike_compiler->compiler_frame->last_block_level=$<number>3; Pike_compiler->compiler_frame->opt_flags |= OPT_CUSTOM_LABELS; } ; while: TOK_WHILE { $<number>$=Pike_compiler->compiler_frame->current_number_of_locals; } { /* Trick to store more than one number on compiler stack - Hubbe */ $<number>$=Pike_compiler->compiler_frame->last_block_level; Pike_compiler->compiler_frame->last_block_level=$<number>2; } '(' safe_comma_expr end_cond statement { int i=lex.current_line; lex.current_line=$1; $$=mknode(F_FOR,$5,mknode(':',$7,NULL)); lex.current_line=i; pop_local_variables($<number>2); Pike_compiler->compiler_frame->last_block_level=$<number>3; Pike_compiler->compiler_frame->opt_flags |= OPT_CUSTOM_LABELS; } ; for_expr: /* EMPTY */ { $$=mkintnode(1); } | safe_comma_expr ; switch: TOK_SWITCH { $<number>$=Pike_compiler->compiler_frame->current_number_of_locals; } { /* Trick to store more than one number on compiler stack - Hubbe */ $<number>$=Pike_compiler->compiler_frame->last_block_level; Pike_compiler->compiler_frame->last_block_level=$<number>2; } '(' safe_comma_expr end_cond statement { $$=mknode(F_SWITCH,$5,$7); $$->line_number=$1; pop_local_variables($<number>2); Pike_compiler->compiler_frame->last_block_level=$<number>3; } ; case: TOK_CASE safe_comma_expr expected_colon { $$=mknode(F_CASE,$2,0); } | TOK_CASE safe_comma_expr expected_dot_dot optional_comma_expr expected_colon { $$=mknode(F_CASE,$4?$2:0,$4?$4:$2); } ; expected_colon: ':' | ';' { yyerror("Missing ':'."); } | '}' { yyerror("Missing ':'."); } | TOK_LEX_EOF { yyerror("Missing ':'."); yyerror("Unexpected end of file."); } ; return: TOK_RETURN { if(!TEST_COMPAT(0,6) && !match_types(Pike_compiler->compiler_frame->current_return_type, void_type_string)) { yyerror("Must return a value for a non-void function."); } $$=mknode(F_RETURN,mkintnode(0),0); } | TOK_RETURN safe_comma_expr { $$=mknode(F_RETURN,$2,0); } ; unused: { $$=0; } | safe_comma_expr { $$=mkcastnode(void_type_string,$1); } ; unused2: comma_expr { $$=mkcastnode(void_type_string,$1); } ; optional_comma_expr: { $$=0; } | safe_comma_expr ; safe_comma_expr: comma_expr | error { $$=0; } ; comma_expr: comma_expr2 | simple_type2 local_name_list { $$=$2; free_node($1); } | simple_identifier_type local_name_list2 { $$=$2; free_node($1); } | simple_identifier_type local_function { $$=$2; free_node($1); } | simple_type2 local_function2 { $$=$2; free_node($1); } ; comma_expr2: expr0 | comma_expr2 ',' expr0 { $$ = mknode(F_COMMA_EXPR,mkcastnode(void_type_string,$1),$3); } ; expr00: expr0 | '@' expr0 { $$=mknode(F_PUSH_ARRAY,$2,0); }; expr0: expr01 | expr4 '=' expr0 { $$=mknode(F_ASSIGN,$3,$1); } | expr4 '=' error { $$=$1; reset_type_stack(); yyerrok; } | bad_expr_ident '=' expr0 { $$=$3; } | '[' low_lvalue_list ']' '=' expr0 { $$=mknode(F_ASSIGN,$5,mknode(F_ARRAY_LVALUE,$2,0)); } | expr4 assign expr0 { $$=mknode($2,$1,$3); } | expr4 assign error { $$=$1; reset_type_stack(); yyerrok; } | bad_expr_ident assign expr0 { $$=$3; } | '[' low_lvalue_list ']' assign expr0 { $$=mknode($4,mknode(F_ARRAY_LVALUE,$2,0),$5); } | '[' low_lvalue_list ']' error { $$=$2; reset_type_stack(); yyerrok; } /* | error { $$=0; reset_type_stack(); } */ ; expr01: expr1 | expr1 '?' expr01 ':' expr01 { $$=mknode('?',$1,mknode(':',$3,$5)); } ; assign: TOK_AND_EQ { $$=F_AND_EQ; } | TOK_OR_EQ { $$=F_OR_EQ; } | TOK_XOR_EQ { $$=F_XOR_EQ; } | TOK_LSH_EQ { $$=F_LSH_EQ; } | TOK_RSH_EQ { $$=F_RSH_EQ; } | TOK_ADD_EQ { $$=F_ADD_EQ; } | TOK_SUB_EQ { $$=F_SUB_EQ; } | TOK_MULT_EQ{ $$=F_MULT_EQ; } | TOK_MOD_EQ { $$=F_MOD_EQ; } | TOK_DIV_EQ { $$=F_DIV_EQ; } ; optional_comma: { $$=0; } | ',' { $$=1; }; expr_list: { $$=0; } | expr_list2 optional_comma ; expr_list2: expr00 | expr_list2 ',' expr00 { $$=mknode(F_ARG_LIST,$1,$3); } ; m_expr_list: { $$=0; } | m_expr_list2 optional_comma ; m_expr_list2: assoc_pair | m_expr_list2 ',' assoc_pair { if ($3) { $$=mknode(F_ARG_LIST,$1,$3); } else { /* Error in assoc_pair */ $$=$1; } } | m_expr_list2 ',' error ; assoc_pair: expr0 expected_colon expr0 { $$=mknode(F_ARG_LIST,$1,$3); } | expr0 expected_colon error { free_node($1); $$=0; } ; expr1: expr2 | expr1 TOK_LOR expr1 { $$=mknode(F_LOR,$1,$3); } | expr1 TOK_LAND expr1 { $$=mknode(F_LAND,$1,$3); } | expr1 '|' expr1 { $$=mkopernode("`|",$1,$3); } | expr1 '^' expr1 { $$=mkopernode("`^",$1,$3); } | expr1 '&' expr1 { $$=mkopernode("`&",$1,$3); } | expr1 TOK_EQ expr1 { $$=mkopernode("`==",$1,$3); } | expr1 TOK_NE expr1 { $$=mkopernode("`!=",$1,$3); } | expr1 '>' expr1 { $$=mkopernode("`>",$1,$3); } | expr1 TOK_GE expr1 { $$=mkopernode("`>=",$1,$3); } | expr1 '<' expr1 { $$=mkopernode("`<",$1,$3); } | expr1 TOK_LE expr1 { $$=mkopernode("`<=",$1,$3); } | expr1 TOK_LSH expr1 { $$=mkopernode("`<<",$1,$3); } | expr1 TOK_RSH expr1 { $$=mkopernode("`>>",$1,$3); } | expr1 '+' expr1 { $$=mkopernode("`+",$1,$3); } | expr1 '-' expr1 { $$=mkopernode("`-",$1,$3); } | expr1 '*' expr1 { $$=mkopernode("`*",$1,$3); } | expr1 '%' expr1 { $$=mkopernode("`%",$1,$3); } | expr1 '/' expr1 { $$=mkopernode("`/",$1,$3); } | expr1 TOK_LOR error | expr1 TOK_LAND error | expr1 '|' error | expr1 '^' error | expr1 '&' error | expr1 TOK_EQ error | expr1 TOK_NE error | expr1 '>' error | expr1 TOK_GE error | expr1 '<' error | expr1 TOK_LE error | expr1 TOK_LSH error | expr1 TOK_RSH error | expr1 '+' error | expr1 '-' error | expr1 '*' error | expr1 '%' error | expr1 '/' error ; expr2: expr3 | cast expr2 { $$=mkcastnode($1->u.sval.u.string,$2); free_node($1); } | soft_cast expr2 { $$=mksoftcastnode($1->u.sval.u.string,$2); free_node($1); } | TOK_INC expr4 { $$=mknode(F_INC,$2,0); } | TOK_DEC expr4 { $$=mknode(F_DEC,$2,0); } | TOK_NOT expr2 { $$=mkopernode("`!",$2,0); } | '~' expr2 { $$=mkopernode("`~",$2,0); } | '-' expr2 { $$=mkopernode("`-",$2,0); } ; expr3: expr4 | expr4 TOK_INC { $$=mknode(F_POST_INC,$1,0); } | expr4 TOK_DEC { $$=mknode(F_POST_DEC,$1,0); } ; /* FIXMEs * It would be nice if 'return' would exit from * the surrounding function rather than from the * implicit lambda. (I think) So beware that the * behaviour of 'return' might change some day. * -Hubbe * * It would also be nice if it was possible to send * arguments to the implicit function, but it would * require using ugly implicit variables or extending * the syntax, and if you extend the syntax you might * as well use lambda() instead. * -Hubbe * * We might want to allow having more than block after * a function ( ie. func(args) {} {} {} {} ) * -Hubbe */ optional_block: /* EMPTY */ { $$=0; } | '{' push_compiler_frame0 { debug_malloc_touch(Pike_compiler->compiler_frame->current_return_type); if(Pike_compiler->compiler_frame->current_return_type) free_type(Pike_compiler->compiler_frame->current_return_type); copy_type(Pike_compiler->compiler_frame->current_return_type, any_type_string); /* block code */ $<number>1=Pike_compiler->num_used_modules; $<number>3=Pike_compiler->compiler_frame->current_number_of_locals; } statements end_block { struct pike_string *type; char buf[40]; int f,e; struct pike_string *name; /* block code */ unuse_modules(Pike_compiler->num_used_modules - $<number>1); pop_local_variables($<number>3); debug_malloc_touch($4); $4=mknode(F_COMMA_EXPR,$4,mknode(F_RETURN,mkintnode(0),0)); type=find_return_type($4); if(type) { push_finished_type(type); free_type(type); } else push_type(T_MIXED); push_type(T_VOID); push_type(T_MANY); /* e=$4-1; for(; e>=0; e--) push_finished_type(Pike_compiler->compiler_frame->variable[e].type); */ push_type(T_FUNCTION); type=compiler_pop_type(); sprintf(buf,"__lambda_%ld_%ld", (long)Pike_compiler->new_program->id, (long)(Pike_compiler->local_class_counter++ & 0xffffffff)); /* OSF/1 cc bug. */ name=make_shared_string(buf); #ifdef LAMBDA_DEBUG fprintf(stderr, "%d: IMPLICIT LAMBDA: %s 0x%08lx 0x%08lx\n", Pike_compiler->compiler_pass, buf, (long)Pike_compiler->new_program->id, Pike_compiler->local_class_counter-1); #endif /* LAMBDA_DEBUG */ f=dooptcode(name, $4, type, ID_STATIC | ID_PRIVATE | ID_INLINE); if(Pike_compiler->compiler_frame->lexical_scope & SCOPE_SCOPED) { $$ = mktrampolinenode(f); } else { $$ = mkidentifiernode(f); } free_string(name); free_type(type); pop_compiler_frame(); } ; expr4: string | TOK_NUMBER | TOK_FLOAT { $$=mkfloatnode((FLOAT_TYPE)$1); } | catch | gauge | typeof | sscanf | lambda | class | idents2 | expr4 '(' expr_list ')' optional_block { if($5) $3=mknode(F_ARG_LIST, $3, $5); $$=mkapplynode($1,$3); } | expr4 '(' error ')' { $$=mkapplynode($1, NULL); yyerrok; } | expr4 '(' error TOK_LEX_EOF { yyerror("Missing ')'."); $$=mkapplynode($1, NULL); yyerror("Unexpected end of file."); } | expr4 '(' error ';' { yyerror("Missing ')'."); $$=mkapplynode($1, NULL); } | expr4 '(' error '}' { yyerror("Missing ')'."); $$=mkapplynode($1, NULL); } | expr4 '[' expr0 ']' { $$=mknode(F_INDEX,$1,$3); } | expr4 '[' comma_expr_or_zero expected_dot_dot comma_expr_or_maxint ']' { $$=mknode(F_RANGE,$1,mknode(F_ARG_LIST,$3,$5)); } | expr4 '[' error ']' { $$=$1; yyerrok; } | expr4 '[' error TOK_LEX_EOF { $$=$1; yyerror("Missing ']'."); yyerror("Unexpected end of file."); } | expr4 '[' error ';' { $$=$1; yyerror("Missing ']'."); } | expr4 '[' error '}' { $$=$1; yyerror("Missing ']'."); } | expr4 '[' error ')' { $$=$1; yyerror("Missing ']'."); } | '(' comma_expr2 ')' { $$=$2; } | '(' '{' expr_list close_brace_or_missing ')' { $$=mkefuncallnode("aggregate",$3); } | '(' '[' m_expr_list close_bracket_or_missing ')' { $$=mkefuncallnode("aggregate_mapping",$3); } | TOK_MULTISET_START expr_list TOK_MULTISET_END { $$=mkefuncallnode("aggregate_multiset",$2); } | TOK_MULTISET_START expr_list ')' { yyerror("Missing '>'."); $$=mkefuncallnode("aggregate_multiset",$2); } | '(' error ')' { $$=0; yyerrok; } | '(' error TOK_LEX_EOF { $$=0; yyerror("Missing ')'."); yyerror("Unexpected end of file."); } | '(' error ';' { $$=0; yyerror("Missing ')'."); } | '(' error '}' { $$=0; yyerror("Missing ')'."); } | TOK_MULTISET_START error TOK_MULTISET_END { $$=0; yyerrok; } | TOK_MULTISET_START error ')' { yyerror("Missing '>'."); $$=0; yyerrok; } | TOK_MULTISET_START error TOK_LEX_EOF { $$=0; yyerror("Missing '>)'."); yyerror("Unexpected end of file."); } | TOK_MULTISET_START error ';' { $$=0; yyerror("Missing '>)'."); } | TOK_MULTISET_START error '}' { $$=0; yyerror("Missing '>)'."); } | expr4 TOK_ARROW magic_identifier { $$=mknode(F_ARROW,$1,$3); } | expr4 TOK_ARROW error {} ; idents2: idents | TOK_LOCAL_ID TOK_COLON_COLON TOK_IDENTIFIER { int i; if(Pike_compiler->last_identifier) free_string(Pike_compiler->last_identifier); copy_shared_string(Pike_compiler->last_identifier, $3->u.sval.u.string); if (((i = find_shared_string_identifier(Pike_compiler->last_identifier, Pike_compiler->new_program)) >= 0) || ((i = really_low_find_shared_string_identifier(Pike_compiler->last_identifier, Pike_compiler->new_program, SEE_STATIC| SEE_PRIVATE)) >= 0)) { if (!(Pike_compiler->new_program->identifier_references[i].id_flags & ID_HIDDEN)) { /* We need to generate a new reference. */ int d; struct reference funp = Pike_compiler->new_program->identifier_references[i]; funp.id_flags |= ID_HIDDEN; i = -1; for(d = 0; d < (int)Pike_compiler->new_program->num_identifier_references; d++) { struct reference *refp; refp = Pike_compiler->new_program->identifier_references + d; if(!MEMCMP((char *)refp,(char *)&funp,sizeof funp)) { i = d; break; } } if (i < 0) { add_to_identifier_references(funp); i = Pike_compiler->new_program->num_identifier_references - 1; } } $$ = mkidentifiernode(i); } else { if (!Pike_compiler->num_parse_error) { if (Pike_compiler->compiler_pass == 2) { my_yyerror("'%s' not defined in local scope.", Pike_compiler->last_identifier->str); $$ = 0; } else { $$ = mknode(F_UNDEFINED, 0, 0); } } else { $$ = mkintnode(0); } } free_node($3); } | TOK_LOCAL_ID TOK_COLON_COLON bad_identifier { $$=0; } ; idents: low_idents | idents '.' TOK_IDENTIFIER { $$=index_node($1, Pike_compiler->last_identifier?Pike_compiler->last_identifier->str:NULL, $3->u.sval.u.string); free_node($1); if(Pike_compiler->last_identifier) free_string(Pike_compiler->last_identifier); copy_shared_string(Pike_compiler->last_identifier, $3->u.sval.u.string); free_node($3); } | '.' TOK_IDENTIFIER { node *tmp; push_text("."); ref_push_string(lex.current_file); if (error_handler && error_handler->prog) { ref_push_object(error_handler); SAFE_APPLY_MASTER("handle_import", 3); } else { SAFE_APPLY_MASTER("handle_import", 2); } tmp=mkconstantsvaluenode(Pike_sp-1); pop_stack(); $$=index_node(tmp, ".", $2->u.sval.u.string); free_node(tmp); if(Pike_compiler->last_identifier) free_string(Pike_compiler->last_identifier); copy_shared_string(Pike_compiler->last_identifier, $2->u.sval.u.string); free_node($2); } | idents '.' bad_identifier {} | idents '.' error {} ; inherit_specifier: TOK_IDENTIFIER TOK_COLON_COLON { int e = 0; inherit_state = Pike_compiler; for (inherit_depth = -1; inherit_depth < compilation_depth; inherit_depth++, inherit_state = inherit_state->previous) { if ((e = find_inherit(inherit_state->new_program, $1->u.sval.u.string))) break; } if (!e) { my_yyerror("No such inherit %s.", $1->u.sval.u.string->str); } free_node($1); $$ = e; } | inherit_specifier TOK_IDENTIFIER TOK_COLON_COLON { if ($1) { int e = 0; #if 0 /* FIXME: The inherit modifiers aren't kept. */ if (!(inherit_state->new_program->inherits[$1].flags & ID_PRIVATE)) { #endif /* 0 */ e = find_inherit(inherit_state->new_program->inherits[$1].prog, $2->u.sval.u.string); #if 0 } #endif /* 0 */ if (!e) { if (inherit_state->new_program->inherits[$1].name) { my_yyerror("No such inherit %s::%s.", inherit_state->new_program->inherits[$1].name->str, $2->u.sval.u.string->str); } else { my_yyerror("No such inherit %s.", $2->u.sval.u.string->str); } $$ = 0; } else { /* We know stuff about the inherit structure... */ $$ = e + $1; } } free_node($2); } | inherit_specifier bad_identifier TOK_COLON_COLON { $$ = 0; } ; low_idents: TOK_IDENTIFIER { int i; struct efun *f; if(Pike_compiler->last_identifier) free_string(Pike_compiler->last_identifier); copy_shared_string(Pike_compiler->last_identifier, $1->u.sval.u.string); if(($$=lexical_islocal(Pike_compiler->last_identifier))) { /* done, nothing to do here */ }else if((i=isidentifier(Pike_compiler->last_identifier))>=0){ $$=mkidentifiernode(i); }else if(!($$=find_module_identifier(Pike_compiler->last_identifier,1))){ if(!Pike_compiler->num_parse_error) { if(Pike_compiler->compiler_pass==2) { my_yyerror("'%s' undefined.", Pike_compiler->last_identifier->str); $$=0; }else{ $$=mknode(F_UNDEFINED,0,0); } }else{ $$=mkintnode(0); } } free_node($1); } | TOK_PREDEF TOK_COLON_COLON TOK_IDENTIFIER { node *tmp2; extern dynamic_buffer used_modules; if(Pike_compiler->last_identifier) free_string(Pike_compiler->last_identifier); copy_shared_string(Pike_compiler->last_identifier, $3->u.sval.u.string); tmp2=mkconstantsvaluenode((struct svalue *) used_modules.s.str ); $$=index_node(tmp2, "predef", $3->u.sval.u.string); if(!$$->name) add_ref( $$->name=$3->u.sval.u.string ); free_node(tmp2); free_node($3); } | TOK_PREDEF TOK_COLON_COLON bad_identifier { $$=0; } | inherit_specifier TOK_IDENTIFIER { if ($1) { int id; if(Pike_compiler->last_identifier) free_string(Pike_compiler->last_identifier); copy_shared_string(Pike_compiler->last_identifier, $2->u.sval.u.string); id = low_reference_inherited_identifier(inherit_state, $1, Pike_compiler->last_identifier, SEE_STATIC); if (id != -1) { if (inherit_depth >= 0) { $$ = mkexternalnode(inherit_state->new_program, id); } else { $$ = mkidentifiernode(id); } } else if(ISCONSTSTR(Pike_compiler->last_identifier, "`->") || ISCONSTSTR(Pike_compiler->last_identifier, "`[]")) { $$ = mknode(F_MAGIC_INDEX, mknewintnode($1), mknewintnode(inherit_depth+1)); } else if(ISCONSTSTR(Pike_compiler->last_identifier, "`->=") || ISCONSTSTR(Pike_compiler->last_identifier, "`[]=")) { $$ = mknode(F_MAGIC_SET_INDEX, mknewintnode($1), mknewintnode(inherit_depth+1)); } else { if (inherit_state->new_program->inherits[$1].name) { my_yyerror("Undefined identifier %s::%s.", inherit_state->new_program->inherits[$1].name->str, Pike_compiler->last_identifier->str); } else { my_yyerror("Undefined identifier %s.", Pike_compiler->last_identifier->str); } $$=0; } } else { $$=0; } free_node($2); } | inherit_specifier bad_identifier { $$=0; } | inherit_specifier error { $$=0; } | TOK_COLON_COLON TOK_IDENTIFIER { int e,i; if(Pike_compiler->last_identifier) free_string(Pike_compiler->last_identifier); copy_shared_string(Pike_compiler->last_identifier, $2->u.sval.u.string); $$=0; for(e=1;e<(int)Pike_compiler->new_program->num_inherits;e++) { if(Pike_compiler->new_program->inherits[e].inherit_level!=1) continue; i=low_reference_inherited_identifier(0,e,$2->u.sval.u.string,SEE_STATIC); if(i==-1) continue; if($$) { $$=mknode(F_ARG_LIST,$$,mkidentifiernode(i)); }else{ $$=mkidentifiernode(i); } } if(!$$) { if(ISCONSTSTR($2->u.sval.u.string,"`->") || ISCONSTSTR($2->u.sval.u.string,"`[]") ) { $$=mknode(F_MAGIC_INDEX,mknewintnode(0),mknewintnode(0)); } else if(ISCONSTSTR($2->u.sval.u.string,"`->=") || ISCONSTSTR($2->u.sval.u.string,"`[]=") ) { $$=mknode(F_MAGIC_SET_INDEX,mknewintnode(0),mknewintnode(0)); } else { $$=mkintnode(0); } }else{ if($$->token==F_ARG_LIST) $$=mkefuncallnode("aggregate",$$); } free_node($2); } | TOK_COLON_COLON bad_identifier { $$=0; } ; comma_expr_or_zero: /* empty */ { $$=mkintnode(0); } | comma_expr | TOK_LEX_EOF { yyerror("Unexpected end of file."); $$=0; } ; comma_expr_or_maxint: /* empty */ { $$=mkintnode(0x7fffffff); } | comma_expr | TOK_LEX_EOF { yyerror("Unexpected end of file."); $$=mkintnode(0x7fffffff); } ; gauge: TOK_GAUGE catch_arg { #ifdef HAVE_GETHRVTIME $$=mkefuncallnode("abs", mkopernode("`/", mkopernode("`-", mkefuncallnode("gethrvtime",0), mknode(F_COMMA_EXPR,$2, mkefuncallnode("gethrvtime",0))), mkfloatnode((FLOAT_TYPE)1000000.0))); #else $$=mkefuncallnode("abs", mkopernode("`/", mkopernode("`-", mknode(F_INDEX,mkefuncallnode("rusage",0), mkintnode(GAUGE_RUSAGE_INDEX)), mknode(F_COMMA_EXPR,$2, mknode(F_INDEX,mkefuncallnode("rusage",0), mkintnode(GAUGE_RUSAGE_INDEX)))), mkfloatnode((FLOAT_TYPE)1000.0))); #endif }; typeof: TOK_TYPEOF '(' expr0 ')' { struct pike_string *s; node *tmp; /* FIXME: Why build the node at all? */ /* Because the optimizer cannot optimize the root node of the * tree properly -Hubbe */ tmp=mknode(F_COMMA_EXPR, $3, 0); s=(tmp && CAR(tmp) && CAR(tmp)->type ? CAR(tmp)->type : mixed_type_string); if(TEST_COMPAT(7,0)) { s=describe_type(s); $$ = mkstrnode(s); free_string(s); }else{ $$ = mktypenode(s); } free_node(tmp); } | TOK_TYPEOF '(' error ')' { $$=0; yyerrok; } | TOK_TYPEOF '(' error '}' { $$=0; yyerror("Missing ')'."); } | TOK_TYPEOF '(' error TOK_LEX_EOF { $$=0; yyerror("Missing ')'."); yyerror("Unexpected end of file."); } | TOK_TYPEOF '(' error ';' { $$=0; yyerror("Missing ')'."); } ; catch_arg: '(' comma_expr ')' { $$=$2; } | '(' error ')' { $$=0; yyerrok; } | '(' error TOK_LEX_EOF { $$=0; yyerror("Missing ')'."); yyerror("Unexpected end of file."); } | '(' error '}' { $$=0; yyerror("Missing ')'."); } | '(' error ';' { $$=0; yyerror("Missing ')'."); } | block | error { $$=0; yyerror("Bad expression for catch."); } ; catch: TOK_CATCH { Pike_compiler->catch_level++; } catch_arg { $$=mknode(F_CATCH,$3,NULL); Pike_compiler->catch_level--; } ; sscanf: TOK_SSCANF '(' expr0 ',' expr0 lvalue_list ')' { $$=mknode(F_SSCANF,mknode(F_ARG_LIST,$3,$5),$6); } | TOK_SSCANF '(' expr0 ',' expr0 error ')' { $$=0; free_node($3); free_node($5); yyerrok; } | TOK_SSCANF '(' expr0 ',' expr0 error TOK_LEX_EOF { $$=0; free_node($3); free_node($5); yyerror("Missing ')'."); yyerror("Unexpected end of file."); } | TOK_SSCANF '(' expr0 ',' expr0 error '}' { $$=0; free_node($3); free_node($5); yyerror("Missing ')'."); } | TOK_SSCANF '(' expr0 ',' expr0 error ';' { $$=0; free_node($3); free_node($5); yyerror("Missing ')'."); } | TOK_SSCANF '(' expr0 error ')' { $$=0; free_node($3); yyerrok; } | TOK_SSCANF '(' expr0 error TOK_LEX_EOF { $$=0; free_node($3); yyerror("Missing ')'."); yyerror("Unexpected end of file."); } | TOK_SSCANF '(' expr0 error '}' { $$=0; free_node($3); yyerror("Missing ')'."); } | TOK_SSCANF '(' expr0 error ';' { $$=0; free_node($3); yyerror("Missing ')'."); } | TOK_SSCANF '(' error ')' { $$=0; yyerrok; } | TOK_SSCANF '(' error TOK_LEX_EOF { $$=0; yyerror("Missing ')'."); yyerror("Unexpected end of file."); } | TOK_SSCANF '(' error '}' { $$=0; yyerror("Missing ')'."); } | TOK_SSCANF '(' error ';' { $$=0; yyerror("Missing ')'."); } ; lvalue: expr4 | '[' low_lvalue_list ']' { $$=mknode(F_ARRAY_LVALUE, $2,0); } | type6 TOK_IDENTIFIER { add_local_name($2->u.sval.u.string,compiler_pop_type(),0); $$=mklocalnode(islocal($2->u.sval.u.string),0); free_node($2); } | bad_expr_ident { $$=mknewintnode(0); } ; low_lvalue_list: lvalue lvalue_list { $$=mknode(F_LVALUE_LIST,$1,$2); } ; lvalue_list: /* empty */ { $$ = 0; } | ',' lvalue lvalue_list { $$ = mknode(F_LVALUE_LIST,$2,$3); } ; string: TOK_STRING | string TOK_STRING { struct pike_string *a,*b; copy_shared_string(a,$1->u.sval.u.string); copy_shared_string(b,$2->u.sval.u.string); free_node($1); free_node($2); a=add_and_free_shared_strings(a,b); $$=mkstrnode(a); free_string(a); } ; /* * Some error-handling */ /* FIXME: Should probably set Pike_compiler->last_identifier. */ bad_identifier: bad_expr_ident | TOK_CLASS { yyerror("class is a reserved word."); } | TOK_ARRAY_ID { yyerror("array is a reserved word."); } | TOK_FLOAT_ID { yyerror("float is a reserved word.");} | TOK_FUNCTION_ID { yyerror("function is a reserved word.");} | TOK_INT_ID { yyerror("int is a reserved word."); } | TOK_MAPPING_ID { yyerror("mapping is a reserved word."); } | TOK_MIXED_ID { yyerror("mixed is a reserved word."); } | TOK_MULTISET_ID { yyerror("multiset is a reserved word."); } | TOK_OBJECT_ID { yyerror("object is a reserved word."); } | TOK_PROGRAM_ID { yyerror("program is a reserved word."); } | TOK_STRING_ID { yyerror("string is a reserved word."); } | TOK_VOID_ID { yyerror("void is a reserved word."); } ; bad_expr_ident: TOK_INLINE { yyerror("inline is a reserved word."); } | TOK_LOCAL_ID { yyerror("local is a reserved word."); } | TOK_NO_MASK { yyerror("nomask is a reserved word."); } | TOK_PREDEF { yyerror("predef is a reserved word."); } | TOK_PRIVATE { yyerror("private is a reserved word."); } | TOK_PROTECTED { yyerror("protected is a reserved word."); } | TOK_PUBLIC { yyerror("public is a reserved word."); } | TOK_OPTIONAL { yyerror("optional is a reserved word."); } | TOK_VARIANT { yyerror("variant is a reserved word."); } | TOK_STATIC { yyerror("static is a reserved word."); } | TOK_EXTERN { yyerror("extern is a reserved word."); } | TOK_FINAL_ID { yyerror("final is a reserved word.");} | TOK_DO { yyerror("do is a reserved word."); } | TOK_ELSE { yyerror("else without if."); } | TOK_RETURN { yyerror("return is a reserved word."); } | TOK_IMPORT { yyerror("import is a reserved word."); } | TOK_INHERIT { yyerror("inherit is a reserved word."); } | TOK_CATCH { yyerror("catch is a reserved word."); } | TOK_GAUGE { yyerror("gauge is a reserved word."); } | TOK_LAMBDA { yyerror("lambda is a reserved word."); } | TOK_SSCANF { yyerror("sscanf is a reserved word."); } | TOK_SWITCH { yyerror("switch is a reserved word."); } | TOK_TYPEOF { yyerror("typeof is a reserved word."); } | TOK_BREAK { yyerror("break is a reserved word."); } | TOK_CASE { yyerror("case is a reserved word."); } | TOK_CONTINUE { yyerror("continue is a reserved word."); } | TOK_DEFAULT { yyerror("default is a reserved word."); } | TOK_FOR { yyerror("for is a reserved word."); } | TOK_FOREACH { yyerror("foreach is a reserved word."); } | TOK_IF { yyerror("if is a reserved word."); } ; %% void yyerror(char *str) { extern int num_parse_error; extern int cumulative_parse_error; #ifdef PIKE_DEBUG if(Pike_interpreter.recoveries && Pike_sp-Pike_interpreter.evaluator_stack < Pike_interpreter.recoveries->stack_pointer) fatal("Stack error (underflow)\n"); #endif if (Pike_compiler->num_parse_error > 10) return; Pike_compiler->num_parse_error++; cumulative_parse_error++; if ((error_handler && error_handler->prog) || get_master()) { if (lex.current_file) { ref_push_string(lex.current_file); } else { /* yyerror() can be called from define_function(), which * can be called by the C module initialization code. */ push_constant_text(""); } push_int(lex.current_line); push_text(str); if (error_handler && error_handler->prog) { safe_apply(error_handler, "compile_error", 3); } else { SAFE_APPLY_MASTER("compile_error", 3); } pop_stack(); }else{ if (lex.current_file) { (void)fprintf(stderr, "%s:%ld: %s\n", lex.current_file->str, (long)lex.current_line, str); } else { (void)fprintf(stderr, "NULL:%ld: %s\n", (long)lex.current_line, str); } fflush(stderr); } } static int low_islocal(struct compiler_frame *f, struct pike_string *str) { int e; for(e=f->current_number_of_locals-1;e>=0;e--) if(f->variable[e].name==str) return e; return -1; } int low_add_local_name(struct compiler_frame *frame, struct pike_string *str, struct pike_string *type, node *def) { if (str->len && !TEST_COMPAT(7,0)) { int tmp=low_islocal(frame,str); if(tmp>=0 && tmp >= frame->last_block_level) { if(str->size_shift) my_yyerror("Duplicate local variable, " "previous declaration on line %d\n", frame->variable[tmp].line); else my_yyerror("Duplicate local variable '%s', " "previous declaration on line %d\n", STR0(str), frame->variable[tmp].line); } if(type == void_type_string) { if(str->size_shift) my_yyerror("Local variables cannot be of type of 'void'.\n"); else my_yyerror("Local variable '%s' is void.\n",STR0(str)); } } debug_malloc_touch(def); debug_malloc_touch(type); debug_malloc_touch(str); reference_shared_string(str); if (frame->current_number_of_locals == MAX_LOCAL) { yyerror("Too many local variables."); return 0; }else { #ifdef PIKE_DEBUG check_type_string(type); #endif /* PIKE_DEBUG */ if (pike_types_le(type, void_type_string)) { if (Pike_compiler->compiler_pass != 1) { yywarning("Declaring local variable with type void " "(converted to type zero)."); } free_type(type); copy_type(type, zero_type_string); } frame->variable[frame->current_number_of_locals].type = type; frame->variable[frame->current_number_of_locals].name = str; frame->variable[frame->current_number_of_locals].def = def; frame->variable[frame->current_number_of_locals].line=lex.current_line; frame->variable[frame->current_number_of_locals].file=lex.current_file; add_ref(lex.current_file); frame->current_number_of_locals++; if(frame->current_number_of_locals > frame->max_number_of_locals) { frame->max_number_of_locals= frame->current_number_of_locals; } return frame->current_number_of_locals-1; } } /* argument must be a shared string */ /* Note that this function eats a reference to 'type' */ /* If def is nonzero, it also eats a ref to def */ int add_local_name(struct pike_string *str, struct pike_string *type, node *def) { return low_add_local_name(Pike_compiler->compiler_frame, str, type, def); } int islocal(struct pike_string *str) { return low_islocal(Pike_compiler->compiler_frame, str); } /* argument must be a shared string */ static node *lexical_islocal(struct pike_string *str) { int e,depth=0; struct compiler_frame *f=Pike_compiler->compiler_frame; while(1) { for(e=f->current_number_of_locals-1;e>=0;e--) { if(f->variable[e].name==str) { struct compiler_frame *q=Pike_compiler->compiler_frame; if(f->variable[e].def) return copy_node(f->variable[e].def); while(q!=f) { q->lexical_scope|=SCOPE_SCOPED; q=q->previous; } if(depth) q->lexical_scope|=SCOPE_SCOPE_USED; return mklocalnode(e,depth); } } if(!(f->lexical_scope & SCOPE_LOCAL)) return 0; depth++; f=f->previous; } } void cleanup_compiler(void) { }

pike.git/ src/ language.yacc > d68a0775bc87470da29145d52145633dcd60bafa [Annotate]