[babeltrace.git] / formats / ctf / metadata / ctf-parser.y

%{
/*
 * ctf-parser.y
 *
 * Common Trace Format Metadata Grammar.
 *
 * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 */

#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <helpers/list.h>
#include <glib.h>
#include "ctf-scanner.h"
#include "ctf-parser.h"
#include "ctf-ast.h"

#define printf_dbg(fmt, args...)	fprintf(stderr, "%s: " fmt, __func__, ## args)

int yyparse(struct ctf_scanner *scanner);
int yylex(union YYSTYPE *yyval, struct ctf_scanner *scanner);
int yylex_init_extra(struct ctf_scanner *scanner, yyscan_t * ptr_yy_globals);
int yylex_destroy(yyscan_t yyscanner) ;
void yyset_in(FILE * in_str, yyscan_t scanner);

int yydebug;

struct gc_string {
	struct cds_list_head gc;
	char s[];
};

char *strredup(char **dest, const char *src)
{
	size_t len = strlen(src) + 1;

	*dest = realloc(*dest, len);
	if (!*dest)
		return NULL;
	strcpy(*dest, src);
	return *dest;
}

static struct gc_string *gc_string_alloc(struct ctf_scanner *scanner, size_t len)
{
	struct gc_string *gstr;

	gstr = malloc(sizeof(*gstr) + len);
	cds_list_add(&gstr->gc, &scanner->allocated_strings);
	return gstr;
}

void setstring(struct ctf_scanner *scanner, YYSTYPE *lvalp, const char *src)
{
	lvalp->gs = gc_string_alloc(scanner, strlen(src) + 1);
	strcpy(lvalp->gs->s, src);
}

static void init_scope(struct ctf_scanner_scope *scope,
		       struct ctf_scanner_scope *parent)
{
	scope->parent = parent;
	scope->types = g_hash_table_new_full(g_str_hash, g_str_equal,
					     (GDestroyNotify) free, NULL);
}

static void finalize_scope(struct ctf_scanner_scope *scope)
{
	g_hash_table_destroy(scope->types);
}

static void push_scope(struct ctf_scanner *scanner)
{
	struct ctf_scanner_scope *ns;

	printf_dbg("push scope\n");
	ns = malloc(sizeof(struct ctf_scanner_scope));
	init_scope(ns, scanner->cs);
	scanner->cs = ns;
}

static void pop_scope(struct ctf_scanner *scanner)
{
	struct ctf_scanner_scope *os;

	printf_dbg("pop scope\n");
	os = scanner->cs;
	scanner->cs = os->parent;
	finalize_scope(os);
	free(os);
}

static int lookup_type(struct ctf_scanner_scope *s, const char *id)
{
	int ret;

	ret = (int) g_hash_table_lookup(s->types, id);
	printf_dbg("lookup %p %s %d\n", s, id, ret);
	return ret;
}

int is_type(struct ctf_scanner *scanner, const char *id)
{
	struct ctf_scanner_scope *it;
	int ret = 0;

	for (it = scanner->cs; it != NULL; it = it->parent) {
		if (lookup_type(it, id)) {
			ret = 1;
			break;
		}
	}
	printf_dbg("is type %s %d\n", id, ret);
	return ret;
}

static void add_type(struct ctf_scanner *scanner, const char *id)
{
	char *type_id = NULL;

	printf_dbg("add type %s\n", id);
	if (lookup_type(scanner->cs, id))
		return;
	strredup(&type_id, id);
	g_hash_table_insert(scanner->cs->types, type_id, type_id);
}

void yyerror(struct ctf_scanner *scanner, const char *str)
{
	fprintf(stderr, "error %s\n", str);
}
 
int yywrap(void)
{
	return 1;
} 

static void free_strings(struct cds_list_head *list)
{
	struct gc_string *gstr, *tmp;

	cds_list_for_each_entry_safe(gstr, tmp, list, gc)
		free(gstr);
}

static struct ctf_ast *ctf_ast_alloc(void)
{
	struct ctf_ast *ast;

	ast = malloc(sizeof(*ast));
	if (!ast)
		return NULL;
	memset(ast, 0, sizeof(*ast));
	return ast;
}

static void ctf_ast_free(struct ctf_ast *ast)
{
}

int ctf_scanner_append_ast(struct ctf_scanner *scanner)
{
	return yyparse(scanner);
}

struct ctf_scanner *ctf_scanner_alloc(FILE *input)
{
	struct ctf_scanner *scanner;
	int ret;

	scanner = malloc(sizeof(*scanner));
	if (!scanner)
		return NULL;
	memset(scanner, 0, sizeof(*scanner));

	ret = yylex_init_extra(scanner, &scanner->scanner);
	if (ret) {
		fprintf(stderr, "yylex_init error\n");
		goto cleanup_scanner;
	}
	yyset_in(input, scanner);

	scanner->ast = ctf_ast_alloc();
	if (!scanner->ast)
		goto cleanup_lexer;
	init_scope(&scanner->root_scope, NULL);
	CDS_INIT_LIST_HEAD(&scanner->allocated_strings);

	return scanner;

cleanup_lexer:
	ret = yylex_destroy(scanner->scanner);
	if (!ret)
		fprintf(stderr, "yylex_destroy error\n");
cleanup_scanner:
	free(scanner);
	return NULL;
}

void ctf_scanner_free(struct ctf_scanner *scanner)
{
	int ret;

	finalize_scope(&scanner->root_scope);
	free_strings(&scanner->allocated_strings);
	ctf_ast_free(scanner->ast);
	ret = yylex_destroy(scanner->scanner);
	if (ret)
		fprintf(stderr, "yylex_destroy error\n");
	free(scanner);
}

%}

%define api.pure
	/* %locations */
%parse-param {struct ctf_scanner *scanner}
%lex-param {struct ctf_scanner *scanner}
%start file
%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
%token <gs> IDENTIFIER ID_TYPE
%token ERROR
%union
{
	long long ll;
	char c;
	struct gc_string *gs;
	struct ctf_node *n;
}

%%

file:
		declaration
	|	file declaration
	;

keywords:
		VOID
	|	CHAR
	|	SHORT
	|	INT
	|	LONG
	|	FLOAT
	|	DOUBLE
	|	SIGNED
	|	UNSIGNED
	|	_BOOL
	|	_COMPLEX
	|	FLOATING_POINT
	|	INTEGER
	|	STRING
	|	ENUM
	|	VARIANT
	|	STRUCT
	|	CONST
	|	TYPEDEF
	|	EVENT
	|	STREAM
	|	TRACE
	;

/* 1.5 Constants */

c_char_sequence:
		c_char
	|	c_char_sequence c_char
	;

c_char:
		CHAR_STRING_TOKEN
	|	ESCSEQ
	;

/* 1.6 String literals */

s_char_sequence:
		s_char
	|	s_char_sequence s_char
	;

s_char:
		CHAR_STRING_TOKEN
	|	ESCSEQ
	;

/* 2: Phrase structure grammar */

postfix_expression:
		IDENTIFIER
	|	ID_TYPE
	|	keywords
	|	DECIMAL_CONSTANT
	|	OCTAL_CONSTANT
	|	HEXADECIMAL_CONSTANT
	|	STRING_LITERAL_START DQUOTE
	|	STRING_LITERAL_START s_char_sequence DQUOTE
	|	CHARACTER_CONSTANT_START c_char_sequence SQUOTE
	|	LPAREN unary_expression RPAREN
	|	postfix_expression LSBRAC unary_expression RSBRAC
	|	postfix_expression DOT IDENTIFIER
	|	postfix_expression DOT ID_TYPE
	|	postfix_expression RARROW IDENTIFIER
	|	postfix_expression RARROW ID_TYPE
	;

unary_expression:
		postfix_expression
	|	PLUS postfix_expression
	|	MINUS postfix_expression
	;

unary_expression_or_range:
		unary_expression DOTDOTDOT unary_expression
	|	unary_expression
	;

/* 2.2: Declarations */

declaration:
		declaration_specifiers SEMICOLON
	|	event_declaration
	|	stream_declaration
	|	trace_declaration
	|	declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
	|	TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
	|	declaration_specifiers TYPEDEF type_declarator_list SEMICOLON
	|	TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list SEMICOLON
	|	TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list SEMICOLON
	;

event_declaration:
		event_declaration_begin event_declaration_end
	|	event_declaration_begin ctf_assignment_expression_list event_declaration_end
	;

event_declaration_begin:
		EVENT LBRAC
		{	push_scope(scanner);	}
	;

event_declaration_end:
		RBRAC SEMICOLON
		{	pop_scope(scanner);	}
	;


stream_declaration:
		stream_declaration_begin stream_declaration_end
	|	stream_declaration_begin ctf_assignment_expression_list stream_declaration_end
	;

stream_declaration_begin:
		STREAM LBRAC
		{	push_scope(scanner);	}
	;

stream_declaration_end:
		RBRAC SEMICOLON
		{	pop_scope(scanner);	}
	;


trace_declaration:
		trace_declaration_begin trace_declaration_end
	|	trace_declaration_begin ctf_assignment_expression_list trace_declaration_end
	;

trace_declaration_begin:
		TRACE LBRAC
		{	push_scope(scanner);	}
	;

trace_declaration_end:
		RBRAC SEMICOLON
		{	pop_scope(scanner);	}
	;

declaration_specifiers:
		CONST
	|	type_specifier
	|	declaration_specifiers CONST
	|	declaration_specifiers type_specifier
	;

type_declarator_list:
		type_declarator
	|	type_declarator_list COMMA type_declarator
	;

abstract_type_declarator_list:
		abstract_type_declarator
	|	abstract_type_declarator_list COMMA abstract_type_declarator
	;

type_specifier:
		VOID
	|	CHAR
	|	SHORT
	|	INT
	|	LONG
	|	FLOAT
	|	DOUBLE
	|	SIGNED
	|	UNSIGNED
	|	_BOOL
	|	_COMPLEX
	|	ID_TYPE
	|	FLOATING_POINT LBRAC RBRAC
	|	FLOATING_POINT LBRAC ctf_assignment_expression_list RBRAC
	|	INTEGER LBRAC RBRAC
	|	INTEGER LBRAC ctf_assignment_expression_list RBRAC
	|	STRING LBRAC RBRAC
	|	STRING LBRAC ctf_assignment_expression_list RBRAC
	|	ENUM enum_type_specifier
	|	VARIANT variant_type_specifier
	|	STRUCT struct_type_specifier
	;

struct_type_specifier:
		struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
	|	IDENTIFIER struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
	|	ID_TYPE struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
	|	IDENTIFIER
	|	ID_TYPE
	;

struct_declaration_begin:
		LBRAC
		{	push_scope(scanner);	}
	;

struct_declaration_end:
		RBRAC
		{	pop_scope(scanner);	}
	;

variant_type_specifier:
		variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	IDENTIFIER variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	IDENTIFIER LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	IDENTIFIER LT IDENTIFIER GT
	|	IDENTIFIER LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	IDENTIFIER LT ID_TYPE GT
	|	ID_TYPE variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	ID_TYPE LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	ID_TYPE LT IDENTIFIER GT
	|	ID_TYPE LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	|	ID_TYPE LT ID_TYPE GT
	;

variant_declaration_begin:
		LBRAC
		{	push_scope(scanner);	}
	;

variant_declaration_end:
		RBRAC
		{	pop_scope(scanner);	}
	;

type_specifier_or_integer_constant:
		declaration_specifiers
	|	DECIMAL_CONSTANT
	|	OCTAL_CONSTANT
	|	HEXADECIMAL_CONSTANT
	;

enum_type_specifier:
		LBRAC enumerator_list RBRAC
	|	LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	|	IDENTIFIER LBRAC enumerator_list RBRAC
	|	IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	|	ID_TYPE LBRAC enumerator_list RBRAC
	|	ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	|	LBRAC enumerator_list COMMA RBRAC
	|	LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	|	IDENTIFIER LBRAC enumerator_list COMMA RBRAC
	|	IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	|	IDENTIFIER
	|	IDENTIFIER LT type_specifier_or_integer_constant GT
	|	ID_TYPE LBRAC enumerator_list COMMA RBRAC
	|	ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	|	ID_TYPE
	|	ID_TYPE LT type_specifier_or_integer_constant GT
	;

struct_or_variant_declaration_list:
		/* empty */
	|	struct_or_variant_declaration_list struct_or_variant_declaration
	;

struct_or_variant_declaration:
		specifier_qualifier_list struct_or_variant_declarator_list SEMICOLON
	|	specifier_qualifier_list TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
	|	TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
	|	specifier_qualifier_list TYPEDEF type_declarator_list SEMICOLON
	|	TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON specifier_qualifier_list abstract_type_declarator_list SEMICOLON
	|	TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON type_declarator_list SEMICOLON
	;

specifier_qualifier_list:
		CONST
	|	type_specifier
	|	specifier_qualifier_list CONST
	|	specifier_qualifier_list type_specifier
	;

struct_or_variant_declarator_list:
		struct_or_variant_declarator
	|	struct_or_variant_declarator_list COMMA struct_or_variant_declarator
	;

struct_or_variant_declarator:
		declarator
	|	COLON unary_expression
	|	declarator COLON unary_expression
	;

enumerator_list:
		enumerator
	|	enumerator_list COMMA enumerator
	;

enumerator:
		IDENTIFIER
	|	ID_TYPE
	|	keywords
	|	STRING_LITERAL_START DQUOTE
	|	STRING_LITERAL_START s_char_sequence DQUOTE
	|	IDENTIFIER EQUAL unary_expression_or_range
	|	ID_TYPE EQUAL unary_expression_or_range
	|	keywords EQUAL unary_expression_or_range
	|	STRING_LITERAL_START DQUOTE EQUAL unary_expression_or_range
	|	STRING_LITERAL_START s_char_sequence DQUOTE EQUAL unary_expression_or_range
	;

abstract_declarator_list:
		abstract_declarator
	|	abstract_declarator_list COMMA abstract_declarator
	;

abstract_declarator:
		direct_abstract_declarator
	|	pointer direct_abstract_declarator
	;

direct_abstract_declarator:
		/* empty */
	|	IDENTIFIER
	|	LPAREN abstract_declarator RPAREN
	|	direct_abstract_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	|	direct_abstract_declarator LSBRAC RSBRAC
	;

declarator:
		direct_declarator
	|	pointer direct_declarator
	;

direct_declarator:
		IDENTIFIER
	|	LPAREN declarator RPAREN
	|	direct_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	;

type_declarator:
		direct_type_declarator
	|	pointer direct_type_declarator
	;

direct_type_declarator:
		IDENTIFIER
		{	add_type(scanner, $1->s);	}
	|	LPAREN type_declarator RPAREN
	|	direct_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	;

abstract_type_declarator:
		direct_abstract_type_declarator
	|	pointer direct_abstract_type_declarator
	;

direct_abstract_type_declarator:
		/* empty */
	|	IDENTIFIER
		{	add_type(scanner, $1->s);	}
	|	LPAREN abstract_type_declarator RPAREN
	|	direct_abstract_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	|	direct_abstract_type_declarator LSBRAC RSBRAC
	;

pointer:	
		STAR
	|	STAR pointer
	|	STAR type_qualifier_list pointer
	;

type_qualifier_list:
		CONST
	|	type_qualifier_list CONST
	;

/* 2.3: CTF-specific declarations */

ctf_assignment_expression_list:
		ctf_assignment_expression SEMICOLON
	|	ctf_assignment_expression_list ctf_assignment_expression SEMICOLON
	;

ctf_assignment_expression:
		unary_expression EQUAL unary_expression
	|	unary_expression TYPEASSIGN type_specifier
	|	declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list
	|	TYPEDEF declaration_specifiers type_declarator_list
	|	declaration_specifiers TYPEDEF type_declarator_list
	|	TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list
	|	TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list
	;
Commit	Line	Data
8b9d5b5e MD	1	%{
8b9d5b5e MD	2	/*
c59a87f5	3	* ctf-parser.y
8b9d5b5e MD	4	*
8b9d5b5e MD	5	* Common Trace Format Metadata Grammar.
c59a87f5 MD	6	*
	7	* Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	8	*
	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:
	15	*
	16	* The above copyright notice and this permission notice shall be included in
	17	* all copies or substantial portions of the Software.
8b9d5b5e MD	18	*/
	19
	20	#include <stdio.h>
	21	#include <unistd.h>
	22	#include <string.h>
	23	#include <stdlib.h>
	24	#include <assert.h>
	25	#include <helpers/list.h>
	26	#include <glib.h>
34d3acc4	27	#include "ctf-scanner.h"
8b9d5b5e MD	28	#include "ctf-parser.h"
	29	#include "ctf-ast.h"
	30
8e1a0b6f	31	#define printf_dbg(fmt, args...) fprintf(stderr, "%s: " fmt, __func__, ## args)
8b9d5b5e	32
34d3acc4 MD	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);
8b9d5b5e	38
8b9d5b5e MD	39	int yydebug;
8b9d5b5e MD	40
8b9d5b5e MD	41	struct gc_string {
	42	struct cds_list_head gc;
	43	char s[];
	44	};
	45
8b9d5b5e MD	46	char strredup(char dest, const char src)
	47	{
	48	size_t len = strlen(src) + 1;
	49
	50	dest = realloc(dest, len);
	51	if (!*dest)
	52	return NULL;
	53	strcpy(*dest, src);
	54	return *dest;
	55	}
	56
34d3acc4	57	static struct gc_string gc_string_alloc(struct ctf_scanner scanner, size_t len)
8b9d5b5e MD	58	{
	59	struct gc_string *gstr;
	60
	61	gstr = malloc(sizeof(*gstr) + len);
34d3acc4	62	cds_list_add(&gstr->gc, &scanner->allocated_strings);
8b9d5b5e MD	63	return gstr;
	64	}
	65
34d3acc4	66	void setstring(struct ctf_scanner scanner, YYSTYPE lvalp, const char *src)
8b9d5b5e	67	{
34d3acc4 MD	68	lvalp->gs = gc_string_alloc(scanner, strlen(src) + 1);
34d3acc4 MD	69	strcpy(lvalp->gs->s, src);
8b9d5b5e MD	70	}
8b9d5b5e MD	71
609bd1bf MD	72	static void init_scope(struct ctf_scanner_scope *scope,
609bd1bf MD	73	struct ctf_scanner_scope *parent)
8b9d5b5e MD	74	{
	75	scope->parent = parent;
	76	scope->types = g_hash_table_new_full(g_str_hash, g_str_equal,
	77	(GDestroyNotify) free, NULL);
	78	}
	79
609bd1bf	80	static void finalize_scope(struct ctf_scanner_scope *scope)
8b9d5b5e MD	81	{
	82	g_hash_table_destroy(scope->types);
	83	}
	84
34d3acc4	85	static void push_scope(struct ctf_scanner *scanner)
8b9d5b5e	86	{
609bd1bf	87	struct ctf_scanner_scope *ns;
8b9d5b5e	88
8e1a0b6f	89	printf_dbg("push scope\n");
609bd1bf	90	ns = malloc(sizeof(struct ctf_scanner_scope));
34d3acc4 MD	91	init_scope(ns, scanner->cs);
34d3acc4 MD	92	scanner->cs = ns;
8b9d5b5e MD	93	}
8b9d5b5e MD	94
34d3acc4	95	static void pop_scope(struct ctf_scanner *scanner)
8b9d5b5e	96	{
609bd1bf	97	struct ctf_scanner_scope *os;
8b9d5b5e	98
8e1a0b6f	99	printf_dbg("pop scope\n");
34d3acc4 MD	100	os = scanner->cs;
34d3acc4 MD	101	scanner->cs = os->parent;
8b9d5b5e MD	102	finalize_scope(os);
	103	free(os);
	104	}
	105
609bd1bf	106	static int lookup_type(struct ctf_scanner_scope s, const char id)
8b9d5b5e MD	107	{
	108	int ret;
	109
	110	ret = (int) g_hash_table_lookup(s->types, id);
	111	printf_dbg("lookup %p %s %d\n", s, id, ret);
	112	return ret;
	113	}
	114
34d3acc4	115	int is_type(struct ctf_scanner scanner, const char id)
8b9d5b5e	116	{
609bd1bf	117	struct ctf_scanner_scope *it;
8b9d5b5e MD	118	int ret = 0;
8b9d5b5e MD	119
34d3acc4	120	for (it = scanner->cs; it != NULL; it = it->parent) {
8b9d5b5e MD	121	if (lookup_type(it, id)) {
	122	ret = 1;
	123	break;
	124	}
	125	}
	126	printf_dbg("is type %s %d\n", id, ret);
	127	return ret;
	128	}
	129
34d3acc4	130	static void add_type(struct ctf_scanner scanner, const char id)
8b9d5b5e MD	131	{
	132	char *type_id = NULL;
	133
	134	printf_dbg("add type %s\n", id);
34d3acc4	135	if (lookup_type(scanner->cs, id))
8b9d5b5e MD	136	return;
8b9d5b5e MD	137	strredup(&type_id, id);
34d3acc4	138	g_hash_table_insert(scanner->cs->types, type_id, type_id);
8b9d5b5e MD	139	}
8b9d5b5e MD	140
34d3acc4	141	void yyerror(struct ctf_scanner scanner, const char str)
8b9d5b5e MD	142	{
	143	fprintf(stderr, "error %s\n", str);
	144	}
	145
	146	int yywrap(void)
	147	{
	148	return 1;
	149	}
	150
34d3acc4	151	static void free_strings(struct cds_list_head *list)
8b9d5b5e MD	152	{
	153	struct gc_string gstr, tmp;
	154
34d3acc4	155	cds_list_for_each_entry_safe(gstr, tmp, list, gc)
8b9d5b5e MD	156	free(gstr);
	157	}
	158
34d3acc4	159	static struct ctf_ast *ctf_ast_alloc(void)
8b9d5b5e	160	{
34d3acc4 MD	161	struct ctf_ast *ast;
	162
	163	ast = malloc(sizeof(*ast));
	164	if (!ast)
	165	return NULL;
	166	memset(ast, 0, sizeof(*ast));
	167	return ast;
	168	}
	169
	170	static void ctf_ast_free(struct ctf_ast *ast)
	171	{
	172	}
	173
	174	int ctf_scanner_append_ast(struct ctf_scanner *scanner)
	175	{
	176	return yyparse(scanner);
	177	}
	178
	179	struct ctf_scanner ctf_scanner_alloc(FILE input)
	180	{
	181	struct ctf_scanner *scanner;
	182	int ret;
	183
	184	scanner = malloc(sizeof(*scanner));
	185	if (!scanner)
	186	return NULL;
	187	memset(scanner, 0, sizeof(*scanner));
	188
	189	ret = yylex_init_extra(scanner, &scanner->scanner);
	190	if (ret) {
	191	fprintf(stderr, "yylex_init error\n");
	192	goto cleanup_scanner;
	193	}
	194	yyset_in(input, scanner);
	195
	196	scanner->ast = ctf_ast_alloc();
	197	if (!scanner->ast)
	198	goto cleanup_lexer;
	199	init_scope(&scanner->root_scope, NULL);
	200	CDS_INIT_LIST_HEAD(&scanner->allocated_strings);
	201
	202	return scanner;
	203
	204	cleanup_lexer:
	205	ret = yylex_destroy(scanner->scanner);
	206	if (!ret)
	207	fprintf(stderr, "yylex_destroy error\n");
	208	cleanup_scanner:
	209	free(scanner);
	210	return NULL;
	211	}
	212
	213	void ctf_scanner_free(struct ctf_scanner *scanner)
	214	{
	215	int ret;
	216
	217	finalize_scope(&scanner->root_scope);
	218	free_strings(&scanner->allocated_strings);
	219	ctf_ast_free(scanner->ast);
	220	ret = yylex_destroy(scanner->scanner);
	221	if (ret)
	222	fprintf(stderr, "yylex_destroy error\n");
	223	free(scanner);
	224	}
8b9d5b5e MD	225
	226	%}
	227
34d3acc4 MD	228	%define api.pure
	229	/* %locations */
	230	%parse-param {struct ctf_scanner *scanner}
	231	%lex-param {struct ctf_scanner *scanner}
8b9d5b5e	232	%start file
8b9d5b5e MD	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
	235	%token ERROR
	236	%union
	237	{
	238	long long ll;
	239	char c;
	240	struct gc_string *gs;
	241	struct ctf_node *n;
	242	}
	243
8b9d5b5e MD	244	%%
	245
	246	file:
	247	declaration
	248	\| file declaration
	249	;
	250
	251	keywords:
	252	VOID
	253	\| CHAR
	254	\| SHORT
	255	\| INT
	256	\| LONG
	257	\| FLOAT
	258	\| DOUBLE
	259	\| SIGNED
	260	\| UNSIGNED
	261	\| _BOOL
	262	\| _COMPLEX
	263	\| FLOATING_POINT
	264	\| INTEGER
	265	\| STRING
	266	\| ENUM
	267	\| VARIANT
	268	\| STRUCT
	269	\| CONST
	270	\| TYPEDEF
	271	\| EVENT
	272	\| STREAM
	273	\| TRACE
	274	;
	275
	276	/* 1.5 Constants */
	277
	278	c_char_sequence:
	279	c_char
	280	\| c_char_sequence c_char
	281	;
	282
	283	c_char:
	284	CHAR_STRING_TOKEN
	285	\| ESCSEQ
	286	;
	287
	288	/* 1.6 String literals */
	289
	290	s_char_sequence:
	291	s_char
	292	\| s_char_sequence s_char
	293	;
	294
	295	s_char:
	296	CHAR_STRING_TOKEN
	297	\| ESCSEQ
	298	;
	299
	300	/* 2: Phrase structure grammar */
	301
	302	postfix_expression:
	303	IDENTIFIER
	304	\| ID_TYPE
	305	\| keywords
	306	\| DECIMAL_CONSTANT
	307	\| OCTAL_CONSTANT
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
318	;
319
320	unary_expression:
321	postfix_expression
322	\| PLUS postfix_expression
323	\| MINUS postfix_expression
324	;
325
326	unary_expression_or_range:
327	unary_expression DOTDOTDOT unary_expression
328	\| unary_expression
329	;
330
331	/* 2.2: Declarations */
332
333	declaration:
334	declaration_specifiers SEMICOLON
335	\| event_declaration
336	\| stream_declaration
337	\| trace_declaration
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
343	;
344
345	event_declaration:
346	event_declaration_begin event_declaration_end
347	\| event_declaration_begin ctf_assignment_expression_list event_declaration_end
348	;
349
350	event_declaration_begin:
351	EVENT LBRAC
fce8006d	352	{ push_scope(scanner); }
8b9d5b5e MD	353	;
	354
	355	event_declaration_end:
	356	RBRAC SEMICOLON
fce8006d	357	{ pop_scope(scanner); }
8b9d5b5e MD	358	;
	359
	360
	361	stream_declaration:
	362	stream_declaration_begin stream_declaration_end
	363	\| stream_declaration_begin ctf_assignment_expression_list stream_declaration_end
	364	;
	365
	366	stream_declaration_begin:
	367	STREAM LBRAC
fce8006d	368	{ push_scope(scanner); }
8b9d5b5e MD	369	;
	370
	371	stream_declaration_end:
	372	RBRAC SEMICOLON
fce8006d	373	{ pop_scope(scanner); }
8b9d5b5e MD	374	;
	375
	376
	377	trace_declaration:
	378	trace_declaration_begin trace_declaration_end
	379	\| trace_declaration_begin ctf_assignment_expression_list trace_declaration_end
	380	;
	381
	382	trace_declaration_begin:
	383	TRACE LBRAC
fce8006d	384	{ push_scope(scanner); }
8b9d5b5e MD	385	;
	386
	387	trace_declaration_end:
	388	RBRAC SEMICOLON
fce8006d	389	{ pop_scope(scanner); }
8b9d5b5e MD	390	;
	391
	392	declaration_specifiers:
	393	CONST
	394	\| type_specifier
	395	\| declaration_specifiers CONST
	396	\| declaration_specifiers type_specifier
	397	;
	398
	399	type_declarator_list:
	400	type_declarator
	401	\| type_declarator_list COMMA type_declarator
	402	;
	403
	404	abstract_type_declarator_list:
	405	abstract_type_declarator
	406	\| abstract_type_declarator_list COMMA abstract_type_declarator
	407	;
	408
	409	type_specifier:
	410	VOID
	411	\| CHAR
	412	\| SHORT
	413	\| INT
	414	\| LONG
	415	\| FLOAT
	416	\| DOUBLE
	417	\| SIGNED
	418	\| UNSIGNED
	419	\| _BOOL
	420	\| _COMPLEX
	421	\| ID_TYPE
	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
	426	\| STRING LBRAC RBRAC
	427	\| STRING LBRAC ctf_assignment_expression_list RBRAC
	428	\| ENUM enum_type_specifier
	429	\| VARIANT variant_type_specifier
	430	\| STRUCT struct_type_specifier
	431	;
	432
	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
	437	\| IDENTIFIER
	438	\| ID_TYPE
	439	;
	440
	441	struct_declaration_begin:
	442	LBRAC
fce8006d	443	{ push_scope(scanner); }
8b9d5b5e MD	444	;
	445
	446	struct_declaration_end:
	447	RBRAC
fce8006d	448	{ pop_scope(scanner); }
8b9d5b5e MD	449	;
	450
	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
	465	;
	466
	467	variant_declaration_begin:
	468	LBRAC
fce8006d	469	{ push_scope(scanner); }
8b9d5b5e MD	470	;
	471
	472	variant_declaration_end:
	473	RBRAC
fce8006d	474	{ pop_scope(scanner); }
8b9d5b5e MD	475	;
	476
	477	type_specifier_or_integer_constant:
	478	declaration_specifiers
	479	\| DECIMAL_CONSTANT
	480	\| OCTAL_CONSTANT
	481	\| HEXADECIMAL_CONSTANT
	482	;
	483
	484	enum_type_specifier:
	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
	495	\| IDENTIFIER
	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
	499	\| ID_TYPE
	500	\| ID_TYPE LT type_specifier_or_integer_constant GT
	501	;
	502
	503	struct_or_variant_declaration_list:
	504	/* empty */
	505	\| struct_or_variant_declaration_list struct_or_variant_declaration
	506	;
	507
	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
	515	;
	516
	517	specifier_qualifier_list:
	518	CONST
	519	\| type_specifier
	520	\| specifier_qualifier_list CONST
	521	\| specifier_qualifier_list type_specifier
	522	;
	523
	524	struct_or_variant_declarator_list:
	525	struct_or_variant_declarator
	526	\| struct_or_variant_declarator_list COMMA struct_or_variant_declarator
	527	;
	528
	529	struct_or_variant_declarator:
	530	declarator
	531	\| COLON unary_expression
	532	\| declarator COLON unary_expression
	533	;
	534
	535	enumerator_list:
	536	enumerator
	537	\| enumerator_list COMMA enumerator
	538	;
539
540	enumerator:
541	IDENTIFIER
542	\| ID_TYPE
543	\| keywords
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
551	;
552
553	abstract_declarator_list:
554	abstract_declarator
555	\| abstract_declarator_list COMMA abstract_declarator
556	;
557
558	abstract_declarator:
559	direct_abstract_declarator
560	\| pointer direct_abstract_declarator
561	;
562
563	direct_abstract_declarator:
564	/* empty */
565	\| IDENTIFIER
566	\| LPAREN abstract_declarator RPAREN
567	\| direct_abstract_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
568	\| direct_abstract_declarator LSBRAC RSBRAC
569	;
570
571	declarator:
572	direct_declarator
573	\| pointer direct_declarator
574	;
575
576	direct_declarator:
577	IDENTIFIER
578	\| LPAREN declarator RPAREN
579	\| direct_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
580	;
581
582	type_declarator:
583	direct_type_declarator
584	\| pointer direct_type_declarator
585	;
586
587	direct_type_declarator:
588	IDENTIFIER
fce8006d	589	{ add_type(scanner, $1->s); }
8b9d5b5e MD	590	\| LPAREN type_declarator RPAREN
	591	\| direct_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	592	;
	593
	594	abstract_type_declarator:
	595	direct_abstract_type_declarator
	596	\| pointer direct_abstract_type_declarator
	597	;
	598
	599	direct_abstract_type_declarator:
	600	/* empty */
	601	\| IDENTIFIER
fce8006d	602	{ add_type(scanner, $1->s); }
8b9d5b5e MD	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
	606	;
	607
	608	pointer:
	609	STAR
	610	\| STAR pointer
	611	\| STAR type_qualifier_list pointer
	612	;
	613
	614	type_qualifier_list:
	615	CONST
	616	\| type_qualifier_list CONST
	617	;
	618
	619	/* 2.3: CTF-specific declarations */
	620
	621	ctf_assignment_expression_list:
	622	ctf_assignment_expression SEMICOLON
	623	\| ctf_assignment_expression_list ctf_assignment_expression SEMICOLON
	624	;
	625
	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
	634	;