5 * Common Trace Format Metadata Grammar.
7 * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
9 * Permission is hereby granted, free of charge, to any person obtaining a copy
10 * of this software and associated documentation files (the "Software"), to deal
11 * in the Software without restriction, including without limitation the rights
12 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
13 * copies of the Software, and to permit persons to whom the Software is
14 * furnished to do so, subject to the following conditions:
16 * The above copyright notice and this permission notice shall be included in
17 * all copies or substantial portions of the Software.
25 #include <helpers/list.h>
27 #include "ctf-scanner.h"
28 #include "ctf-parser.h"
31 #define printf_dbg(fmt, args...) fprintf(stderr, "%s: " fmt, __func__, ## args)
33 int yyparse(struct ctf_scanner *scanner);
34 int yylex(union YYSTYPE *yyval, struct ctf_scanner *scanner);
35 int yylex_init_extra(struct ctf_scanner *scanner, yyscan_t * ptr_yy_globals);
36 int yylex_destroy(yyscan_t yyscanner) ;
37 void yyset_in(FILE * in_str, yyscan_t scanner);
42 struct cds_list_head gc;
46 char *strredup(char **dest, const char *src)
48 size_t len = strlen(src) + 1;
50 *dest = realloc(*dest, len);
57 static struct gc_string *gc_string_alloc(struct ctf_scanner *scanner, size_t len)
59 struct gc_string *gstr;
61 gstr = malloc(sizeof(*gstr) + len);
62 cds_list_add(&gstr->gc, &scanner->allocated_strings);
66 void setstring(struct ctf_scanner *scanner, YYSTYPE *lvalp, const char *src)
68 lvalp->gs = gc_string_alloc(scanner, strlen(src) + 1);
69 strcpy(lvalp->gs->s, src);
72 static void init_scope(struct ctf_scanner_scope *scope,
73 struct ctf_scanner_scope *parent)
75 scope->parent = parent;
76 scope->types = g_hash_table_new_full(g_str_hash, g_str_equal,
77 (GDestroyNotify) free, NULL);
80 static void finalize_scope(struct ctf_scanner_scope *scope)
82 g_hash_table_destroy(scope->types);
85 static void push_scope(struct ctf_scanner *scanner)
87 struct ctf_scanner_scope *ns;
89 printf_dbg("push scope\n");
90 ns = malloc(sizeof(struct ctf_scanner_scope));
91 init_scope(ns, scanner->cs);
95 static void pop_scope(struct ctf_scanner *scanner)
97 struct ctf_scanner_scope *os;
99 printf_dbg("pop scope\n");
101 scanner->cs = os->parent;
106 static int lookup_type(struct ctf_scanner_scope *s, const char *id)
110 ret = (int) g_hash_table_lookup(s->types, id);
111 printf_dbg("lookup %p %s %d\n", s, id, ret);
115 int is_type(struct ctf_scanner *scanner, const char *id)
117 struct ctf_scanner_scope *it;
120 for (it = scanner->cs; it != NULL; it = it->parent) {
121 if (lookup_type(it, id)) {
126 printf_dbg("is type %s %d\n", id, ret);
130 static void add_type(struct ctf_scanner *scanner, const char *id)
132 char *type_id = NULL;
134 printf_dbg("add type %s\n", id);
135 if (lookup_type(scanner->cs, id))
137 strredup(&type_id, id);
138 g_hash_table_insert(scanner->cs->types, type_id, type_id);
141 void yyerror(struct ctf_scanner *scanner, const char *str)
143 fprintf(stderr, "error %s\n", str);
151 static void free_strings(struct cds_list_head *list)
153 struct gc_string *gstr, *tmp;
155 cds_list_for_each_entry_safe(gstr, tmp, list, gc)
159 static struct ctf_ast *ctf_ast_alloc(void)
163 ast = malloc(sizeof(*ast));
166 memset(ast, 0, sizeof(*ast));
170 static void ctf_ast_free(struct ctf_ast *ast)
174 int ctf_scanner_append_ast(struct ctf_scanner *scanner)
176 return yyparse(scanner);
179 struct ctf_scanner *ctf_scanner_alloc(FILE *input)
181 struct ctf_scanner *scanner;
184 scanner = malloc(sizeof(*scanner));
187 memset(scanner, 0, sizeof(*scanner));
189 ret = yylex_init_extra(scanner, &scanner->scanner);
191 fprintf(stderr, "yylex_init error\n");
192 goto cleanup_scanner;
194 yyset_in(input, scanner);
196 scanner->ast = ctf_ast_alloc();
199 init_scope(&scanner->root_scope, NULL);
200 CDS_INIT_LIST_HEAD(&scanner->allocated_strings);
205 ret = yylex_destroy(scanner->scanner);
207 fprintf(stderr, "yylex_destroy error\n");
213 void ctf_scanner_free(struct ctf_scanner *scanner)
217 finalize_scope(&scanner->root_scope);
218 free_strings(&scanner->allocated_strings);
219 ctf_ast_free(scanner->ast);
220 ret = yylex_destroy(scanner->scanner);
222 fprintf(stderr, "yylex_destroy error\n");
230 %parse-param {struct ctf_scanner *scanner}
231 %lex-param {struct ctf_scanner *scanner}
233 %token CHARACTER_CONSTANT_START SQUOTE STRING_LITERAL_START DQUOTE ESCSEQ CHAR_STRING_TOKEN LSBRAC RSBRAC LPAREN RPAREN LBRAC RBRAC RARROW STAR PLUS MINUS LT GT TYPEASSIGN COLON SEMICOLON DOTDOTDOT DOT EQUAL COMMA CONST CHAR DOUBLE ENUM EVENT FLOATING_POINT FLOAT INTEGER INT LONG SHORT SIGNED STREAM STRING STRUCT TRACE TYPEALIAS TYPEDEF UNSIGNED VARIANT VOID _BOOL _COMPLEX _IMAGINARY DECIMAL_CONSTANT OCTAL_CONSTANT HEXADECIMAL_CONSTANT
234 %token <gs> IDENTIFIER ID_TYPE
240 struct gc_string *gs;
280 | c_char_sequence c_char
288 /* 1.6 String literals */
292 | s_char_sequence s_char
300 /* 2: Phrase structure grammar */
308 | HEXADECIMAL_CONSTANT
309 | STRING_LITERAL_START DQUOTE
310 | STRING_LITERAL_START s_char_sequence DQUOTE
311 | CHARACTER_CONSTANT_START c_char_sequence SQUOTE
312 | LPAREN unary_expression RPAREN
313 | postfix_expression LSBRAC unary_expression RSBRAC
314 | postfix_expression DOT IDENTIFIER
315 | postfix_expression DOT ID_TYPE
316 | postfix_expression RARROW IDENTIFIER
317 | postfix_expression RARROW ID_TYPE
322 | PLUS postfix_expression
323 | MINUS postfix_expression
326 unary_expression_or_range:
327 unary_expression DOTDOTDOT unary_expression
331 /* 2.2: Declarations */
334 declaration_specifiers SEMICOLON
338 | declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
339 | TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
340 | declaration_specifiers TYPEDEF type_declarator_list SEMICOLON
341 | TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list SEMICOLON
342 | TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list SEMICOLON
346 event_declaration_begin event_declaration_end
347 | event_declaration_begin ctf_assignment_expression_list event_declaration_end
350 event_declaration_begin:
352 { push_scope(scanner); }
355 event_declaration_end:
357 { pop_scope(scanner); }
362 stream_declaration_begin stream_declaration_end
363 | stream_declaration_begin ctf_assignment_expression_list stream_declaration_end
366 stream_declaration_begin:
368 { push_scope(scanner); }
371 stream_declaration_end:
373 { pop_scope(scanner); }
378 trace_declaration_begin trace_declaration_end
379 | trace_declaration_begin ctf_assignment_expression_list trace_declaration_end
382 trace_declaration_begin:
384 { push_scope(scanner); }
387 trace_declaration_end:
389 { pop_scope(scanner); }
392 declaration_specifiers:
395 | declaration_specifiers CONST
396 | declaration_specifiers type_specifier
399 type_declarator_list:
401 | type_declarator_list COMMA type_declarator
404 abstract_type_declarator_list:
405 abstract_type_declarator
406 | abstract_type_declarator_list COMMA abstract_type_declarator
422 | FLOATING_POINT LBRAC RBRAC
423 | FLOATING_POINT LBRAC ctf_assignment_expression_list RBRAC
424 | INTEGER LBRAC RBRAC
425 | INTEGER LBRAC ctf_assignment_expression_list RBRAC
427 | STRING LBRAC ctf_assignment_expression_list RBRAC
428 | ENUM enum_type_specifier
429 | VARIANT variant_type_specifier
430 | STRUCT struct_type_specifier
433 struct_type_specifier:
434 struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
435 | IDENTIFIER struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
436 | ID_TYPE struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
441 struct_declaration_begin:
443 { push_scope(scanner); }
446 struct_declaration_end:
448 { pop_scope(scanner); }
451 variant_type_specifier:
452 variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
453 | LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
454 | LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
455 | IDENTIFIER variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
456 | IDENTIFIER LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
457 | IDENTIFIER LT IDENTIFIER GT
458 | IDENTIFIER LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
459 | IDENTIFIER LT ID_TYPE GT
460 | ID_TYPE variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
461 | ID_TYPE LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
462 | ID_TYPE LT IDENTIFIER GT
463 | ID_TYPE LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
464 | ID_TYPE LT ID_TYPE GT
467 variant_declaration_begin:
469 { push_scope(scanner); }
472 variant_declaration_end:
474 { pop_scope(scanner); }
477 type_specifier_or_integer_constant:
478 declaration_specifiers
481 | HEXADECIMAL_CONSTANT
485 LBRAC enumerator_list RBRAC
486 | LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
487 | IDENTIFIER LBRAC enumerator_list RBRAC
488 | IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
489 | ID_TYPE LBRAC enumerator_list RBRAC
490 | ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
491 | LBRAC enumerator_list COMMA RBRAC
492 | LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
493 | IDENTIFIER LBRAC enumerator_list COMMA RBRAC
494 | IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
496 | IDENTIFIER LT type_specifier_or_integer_constant GT
497 | ID_TYPE LBRAC enumerator_list COMMA RBRAC
498 | ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
500 | ID_TYPE LT type_specifier_or_integer_constant GT
503 struct_or_variant_declaration_list:
505 | struct_or_variant_declaration_list struct_or_variant_declaration
508 struct_or_variant_declaration:
509 specifier_qualifier_list struct_or_variant_declarator_list SEMICOLON
510 | specifier_qualifier_list TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
511 | TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
512 | specifier_qualifier_list TYPEDEF type_declarator_list SEMICOLON
513 | TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON specifier_qualifier_list abstract_type_declarator_list SEMICOLON
514 | TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON type_declarator_list SEMICOLON
517 specifier_qualifier_list:
520 | specifier_qualifier_list CONST
521 | specifier_qualifier_list type_specifier
524 struct_or_variant_declarator_list:
525 struct_or_variant_declarator
526 | struct_or_variant_declarator_list COMMA struct_or_variant_declarator
529 struct_or_variant_declarator:
531 | COLON unary_expression
532 | declarator COLON unary_expression
537 | enumerator_list COMMA enumerator
544 | STRING_LITERAL_START DQUOTE
545 | STRING_LITERAL_START s_char_sequence DQUOTE
546 | IDENTIFIER EQUAL unary_expression_or_range
547 | ID_TYPE EQUAL unary_expression_or_range
548 | keywords EQUAL unary_expression_or_range
549 | STRING_LITERAL_START DQUOTE EQUAL unary_expression_or_range
550 | STRING_LITERAL_START s_char_sequence DQUOTE EQUAL unary_expression_or_range
553 abstract_declarator_list:
555 | abstract_declarator_list COMMA abstract_declarator
559 direct_abstract_declarator
560 | pointer direct_abstract_declarator
563 direct_abstract_declarator:
566 | LPAREN abstract_declarator RPAREN
567 | direct_abstract_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
568 | direct_abstract_declarator LSBRAC RSBRAC
573 | pointer direct_declarator
578 | LPAREN declarator RPAREN
579 | direct_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
583 direct_type_declarator
584 | pointer direct_type_declarator
587 direct_type_declarator:
589 { add_type(scanner, $1->s); }
590 | LPAREN type_declarator RPAREN
591 | direct_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
594 abstract_type_declarator:
595 direct_abstract_type_declarator
596 | pointer direct_abstract_type_declarator
599 direct_abstract_type_declarator:
602 { add_type(scanner, $1->s); }
603 | LPAREN abstract_type_declarator RPAREN
604 | direct_abstract_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
605 | direct_abstract_type_declarator LSBRAC RSBRAC
611 | STAR type_qualifier_list pointer
616 | type_qualifier_list CONST
619 /* 2.3: CTF-specific declarations */
621 ctf_assignment_expression_list:
622 ctf_assignment_expression SEMICOLON
623 | ctf_assignment_expression_list ctf_assignment_expression SEMICOLON
626 ctf_assignment_expression:
627 unary_expression EQUAL unary_expression
628 | unary_expression TYPEASSIGN type_specifier
629 | declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list
630 | TYPEDEF declaration_specifiers type_declarator_list
631 | declaration_specifiers TYPEDEF type_declarator_list
632 | TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list
633 | TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list