[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)
#define printf_dbg_noarg(fmt)	fprintf(stderr, "%s: " fmt, __func__)

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_noarg("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_noarg("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
	31	#define printf_dbg(fmt, args...) fprintf(stderr, "%s: " fmt, __func__, args)
	32	#define printf_dbg_noarg(fmt) fprintf(stderr, "%s: " fmt, __func__)
	33
34d3acc4 MD	34	int yyparse(struct ctf_scanner *scanner);
	35	int yylex(union YYSTYPE yyval, struct ctf_scanner scanner);
	36	int yylex_init_extra(struct ctf_scanner scanner, yyscan_t ptr_yy_globals);
	37	int yylex_destroy(yyscan_t yyscanner) ;
	38	void yyset_in(FILE * in_str, yyscan_t scanner);
8b9d5b5e	39
8b9d5b5e MD	40	int yydebug;
8b9d5b5e MD	41
8b9d5b5e MD	42	struct gc_string {
	43	struct cds_list_head gc;
	44	char s[];
	45	};
	46
8b9d5b5e MD	47	char strredup(char dest, const char src)
	48	{
	49	size_t len = strlen(src) + 1;
	50
	51	dest = realloc(dest, len);
	52	if (!*dest)
	53	return NULL;
	54	strcpy(*dest, src);
	55	return *dest;
	56	}
	57
34d3acc4	58	static struct gc_string gc_string_alloc(struct ctf_scanner scanner, size_t len)
8b9d5b5e MD	59	{
	60	struct gc_string *gstr;
	61
	62	gstr = malloc(sizeof(*gstr) + len);
34d3acc4	63	cds_list_add(&gstr->gc, &scanner->allocated_strings);
8b9d5b5e MD	64	return gstr;
	65	}
	66
34d3acc4	67	void setstring(struct ctf_scanner scanner, YYSTYPE lvalp, const char *src)
8b9d5b5e	68	{
34d3acc4 MD	69	lvalp->gs = gc_string_alloc(scanner, strlen(src) + 1);
34d3acc4 MD	70	strcpy(lvalp->gs->s, src);
8b9d5b5e MD	71	}
8b9d5b5e MD	72
609bd1bf MD	73	static void init_scope(struct ctf_scanner_scope *scope,
609bd1bf MD	74	struct ctf_scanner_scope *parent)
8b9d5b5e MD	75	{
	76	scope->parent = parent;
	77	scope->types = g_hash_table_new_full(g_str_hash, g_str_equal,
	78	(GDestroyNotify) free, NULL);
	79	}
	80
609bd1bf	81	static void finalize_scope(struct ctf_scanner_scope *scope)
8b9d5b5e MD	82	{
	83	g_hash_table_destroy(scope->types);
	84	}
	85
34d3acc4	86	static void push_scope(struct ctf_scanner *scanner)
8b9d5b5e	87	{
609bd1bf	88	struct ctf_scanner_scope *ns;
8b9d5b5e MD	89
8b9d5b5e MD	90	printf_dbg_noarg("push scope\n");
609bd1bf	91	ns = malloc(sizeof(struct ctf_scanner_scope));
34d3acc4 MD	92	init_scope(ns, scanner->cs);
34d3acc4 MD	93	scanner->cs = ns;
8b9d5b5e MD	94	}
8b9d5b5e MD	95
34d3acc4	96	static void pop_scope(struct ctf_scanner *scanner)
8b9d5b5e	97	{
609bd1bf	98	struct ctf_scanner_scope *os;
8b9d5b5e MD	99
8b9d5b5e MD	100	printf_dbg_noarg("pop scope\n");
34d3acc4 MD	101	os = scanner->cs;
34d3acc4 MD	102	scanner->cs = os->parent;
8b9d5b5e MD	103	finalize_scope(os);
	104	free(os);
	105	}
	106
609bd1bf	107	static int lookup_type(struct ctf_scanner_scope s, const char id)
8b9d5b5e MD	108	{
	109	int ret;
	110
	111	ret = (int) g_hash_table_lookup(s->types, id);
	112	printf_dbg("lookup %p %s %d\n", s, id, ret);
	113	return ret;
	114	}
	115
34d3acc4	116	int is_type(struct ctf_scanner scanner, const char id)
8b9d5b5e	117	{
609bd1bf	118	struct ctf_scanner_scope *it;
8b9d5b5e MD	119	int ret = 0;
8b9d5b5e MD	120
34d3acc4	121	for (it = scanner->cs; it != NULL; it = it->parent) {
8b9d5b5e MD	122	if (lookup_type(it, id)) {
	123	ret = 1;
	124	break;
	125	}
	126	}
	127	printf_dbg("is type %s %d\n", id, ret);
	128	return ret;
	129	}
	130
34d3acc4	131	static void add_type(struct ctf_scanner scanner, const char id)
8b9d5b5e MD	132	{
	133	char *type_id = NULL;
	134
	135	printf_dbg("add type %s\n", id);
34d3acc4	136	if (lookup_type(scanner->cs, id))
8b9d5b5e MD	137	return;
8b9d5b5e MD	138	strredup(&type_id, id);
34d3acc4	139	g_hash_table_insert(scanner->cs->types, type_id, type_id);
8b9d5b5e MD	140	}
8b9d5b5e MD	141
34d3acc4	142	void yyerror(struct ctf_scanner scanner, const char str)
8b9d5b5e MD	143	{
	144	fprintf(stderr, "error %s\n", str);
	145	}
	146
	147	int yywrap(void)
	148	{
	149	return 1;
	150	}
	151
34d3acc4	152	static void free_strings(struct cds_list_head *list)
8b9d5b5e MD	153	{
	154	struct gc_string gstr, tmp;
	155
34d3acc4	156	cds_list_for_each_entry_safe(gstr, tmp, list, gc)
8b9d5b5e MD	157	free(gstr);
	158	}
	159
34d3acc4	160	static struct ctf_ast *ctf_ast_alloc(void)
8b9d5b5e	161	{
34d3acc4 MD	162	struct ctf_ast *ast;
	163
	164	ast = malloc(sizeof(*ast));
	165	if (!ast)
	166	return NULL;
	167	memset(ast, 0, sizeof(*ast));
	168	return ast;
	169	}
	170
	171	static void ctf_ast_free(struct ctf_ast *ast)
	172	{
	173	}
	174
	175	int ctf_scanner_append_ast(struct ctf_scanner *scanner)
	176	{
	177	return yyparse(scanner);
	178	}
	179
	180	struct ctf_scanner ctf_scanner_alloc(FILE input)
	181	{
	182	struct ctf_scanner *scanner;
	183	int ret;
	184
	185	scanner = malloc(sizeof(*scanner));
	186	if (!scanner)
	187	return NULL;
	188	memset(scanner, 0, sizeof(*scanner));
	189
	190	ret = yylex_init_extra(scanner, &scanner->scanner);
	191	if (ret) {
	192	fprintf(stderr, "yylex_init error\n");
	193	goto cleanup_scanner;
	194	}
	195	yyset_in(input, scanner);
	196
	197	scanner->ast = ctf_ast_alloc();
	198	if (!scanner->ast)
	199	goto cleanup_lexer;
	200	init_scope(&scanner->root_scope, NULL);
	201	CDS_INIT_LIST_HEAD(&scanner->allocated_strings);
	202
	203	return scanner;
	204
	205	cleanup_lexer:
	206	ret = yylex_destroy(scanner->scanner);
	207	if (!ret)
	208	fprintf(stderr, "yylex_destroy error\n");
	209	cleanup_scanner:
	210	free(scanner);
	211	return NULL;
	212	}
	213
	214	void ctf_scanner_free(struct ctf_scanner *scanner)
	215	{
	216	int ret;
	217
	218	finalize_scope(&scanner->root_scope);
	219	free_strings(&scanner->allocated_strings);
	220	ctf_ast_free(scanner->ast);
	221	ret = yylex_destroy(scanner->scanner);
	222	if (ret)
	223	fprintf(stderr, "yylex_destroy error\n");
	224	free(scanner);
	225	}
8b9d5b5e MD	226
	227	%}
	228
34d3acc4 MD	229	%define api.pure
	230	/* %locations */
	231	%parse-param {struct ctf_scanner *scanner}
	232	%lex-param {struct ctf_scanner *scanner}
8b9d5b5e	233	%start file
8b9d5b5e MD	234	%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
	235	%token <gs> IDENTIFIER ID_TYPE
	236	%token ERROR
	237	%union
	238	{
	239	long long ll;
	240	char c;
	241	struct gc_string *gs;
	242	struct ctf_node *n;
	243	}
	244
8b9d5b5e MD	245	%%
	246
	247	file:
	248	declaration
	249	\| file declaration
	250	;
	251
	252	keywords:
	253	VOID
	254	\| CHAR
	255	\| SHORT
	256	\| INT
	257	\| LONG
	258	\| FLOAT
	259	\| DOUBLE
	260	\| SIGNED
	261	\| UNSIGNED
	262	\| _BOOL
	263	\| _COMPLEX
	264	\| FLOATING_POINT
	265	\| INTEGER
	266	\| STRING
	267	\| ENUM
	268	\| VARIANT
	269	\| STRUCT
	270	\| CONST
	271	\| TYPEDEF
	272	\| EVENT
	273	\| STREAM
	274	\| TRACE
	275	;
	276
	277	/* 1.5 Constants */
	278
	279	c_char_sequence:
	280	c_char
	281	\| c_char_sequence c_char
	282	;
	283
	284	c_char:
	285	CHAR_STRING_TOKEN
	286	\| ESCSEQ
	287	;
	288
	289	/* 1.6 String literals */
	290
	291	s_char_sequence:
	292	s_char
	293	\| s_char_sequence s_char
	294	;
	295
	296	s_char:
	297	CHAR_STRING_TOKEN
	298	\| ESCSEQ
	299	;
	300
	301	/* 2: Phrase structure grammar */
	302
	303	postfix_expression:
	304	IDENTIFIER
	305	\| ID_TYPE
	306	\| keywords
	307	\| DECIMAL_CONSTANT
	308	\| OCTAL_CONSTANT
309	\| HEXADECIMAL_CONSTANT
310	\| STRING_LITERAL_START DQUOTE
311	\| STRING_LITERAL_START s_char_sequence DQUOTE
312	\| CHARACTER_CONSTANT_START c_char_sequence SQUOTE
313	\| LPAREN unary_expression RPAREN
314	\| postfix_expression LSBRAC unary_expression RSBRAC
315	\| postfix_expression DOT IDENTIFIER
316	\| postfix_expression DOT ID_TYPE
317	\| postfix_expression RARROW IDENTIFIER
318	\| postfix_expression RARROW ID_TYPE
319	;
320
321	unary_expression:
322	postfix_expression
323	\| PLUS postfix_expression
324	\| MINUS postfix_expression
325	;
326
327	unary_expression_or_range:
328	unary_expression DOTDOTDOT unary_expression
329	\| unary_expression
330	;
331
332	/* 2.2: Declarations */
333
334	declaration:
335	declaration_specifiers SEMICOLON
336	\| event_declaration
337	\| stream_declaration
338	\| trace_declaration
339	\| declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
340	\| TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
341	\| declaration_specifiers TYPEDEF type_declarator_list SEMICOLON
342	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list SEMICOLON
343	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list SEMICOLON
344	;
345
346	event_declaration:
347	event_declaration_begin event_declaration_end
348	\| event_declaration_begin ctf_assignment_expression_list event_declaration_end
349	;
350
351	event_declaration_begin:
352	EVENT LBRAC
fce8006d	353	{ push_scope(scanner); }
8b9d5b5e MD	354	;
	355
	356	event_declaration_end:
	357	RBRAC SEMICOLON
fce8006d	358	{ pop_scope(scanner); }
8b9d5b5e MD	359	;
	360
	361
	362	stream_declaration:
	363	stream_declaration_begin stream_declaration_end
	364	\| stream_declaration_begin ctf_assignment_expression_list stream_declaration_end
	365	;
	366
	367	stream_declaration_begin:
	368	STREAM LBRAC
fce8006d	369	{ push_scope(scanner); }
8b9d5b5e MD	370	;
	371
	372	stream_declaration_end:
	373	RBRAC SEMICOLON
fce8006d	374	{ pop_scope(scanner); }
8b9d5b5e MD	375	;
	376
	377
	378	trace_declaration:
	379	trace_declaration_begin trace_declaration_end
	380	\| trace_declaration_begin ctf_assignment_expression_list trace_declaration_end
	381	;
	382
	383	trace_declaration_begin:
	384	TRACE LBRAC
fce8006d	385	{ push_scope(scanner); }
8b9d5b5e MD	386	;
	387
	388	trace_declaration_end:
	389	RBRAC SEMICOLON
fce8006d	390	{ pop_scope(scanner); }
8b9d5b5e MD	391	;
	392
	393	declaration_specifiers:
	394	CONST
	395	\| type_specifier
	396	\| declaration_specifiers CONST
	397	\| declaration_specifiers type_specifier
	398	;
	399
	400	type_declarator_list:
	401	type_declarator
	402	\| type_declarator_list COMMA type_declarator
	403	;
	404
	405	abstract_type_declarator_list:
	406	abstract_type_declarator
	407	\| abstract_type_declarator_list COMMA abstract_type_declarator
	408	;
	409
	410	type_specifier:
	411	VOID
	412	\| CHAR
	413	\| SHORT
	414	\| INT
	415	\| LONG
	416	\| FLOAT
	417	\| DOUBLE
	418	\| SIGNED
	419	\| UNSIGNED
	420	\| _BOOL
	421	\| _COMPLEX
	422	\| ID_TYPE
	423	\| FLOATING_POINT LBRAC RBRAC
	424	\| FLOATING_POINT LBRAC ctf_assignment_expression_list RBRAC
	425	\| INTEGER LBRAC RBRAC
	426	\| INTEGER LBRAC ctf_assignment_expression_list RBRAC
	427	\| STRING LBRAC RBRAC
	428	\| STRING LBRAC ctf_assignment_expression_list RBRAC
	429	\| ENUM enum_type_specifier
	430	\| VARIANT variant_type_specifier
	431	\| STRUCT struct_type_specifier
	432	;
	433
	434	struct_type_specifier:
	435	struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
	436	\| IDENTIFIER struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
	437	\| ID_TYPE struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
	438	\| IDENTIFIER
	439	\| ID_TYPE
	440	;
	441
	442	struct_declaration_begin:
	443	LBRAC
fce8006d	444	{ push_scope(scanner); }
8b9d5b5e MD	445	;
	446
	447	struct_declaration_end:
	448	RBRAC
fce8006d	449	{ pop_scope(scanner); }
8b9d5b5e MD	450	;
	451
	452	variant_type_specifier:
	453	variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	454	\| LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	455	\| LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	456	\| IDENTIFIER variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	457	\| IDENTIFIER LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	458	\| IDENTIFIER LT IDENTIFIER GT
	459	\| IDENTIFIER LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	460	\| IDENTIFIER LT ID_TYPE GT
	461	\| ID_TYPE variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	462	\| ID_TYPE LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	463	\| ID_TYPE LT IDENTIFIER GT
	464	\| ID_TYPE LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	465	\| ID_TYPE LT ID_TYPE GT
	466	;
	467
	468	variant_declaration_begin:
	469	LBRAC
fce8006d	470	{ push_scope(scanner); }
8b9d5b5e MD	471	;
	472
	473	variant_declaration_end:
	474	RBRAC
fce8006d	475	{ pop_scope(scanner); }
8b9d5b5e MD	476	;
	477
	478	type_specifier_or_integer_constant:
	479	declaration_specifiers
	480	\| DECIMAL_CONSTANT
	481	\| OCTAL_CONSTANT
	482	\| HEXADECIMAL_CONSTANT
	483	;
	484
	485	enum_type_specifier:
	486	LBRAC enumerator_list RBRAC
	487	\| LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	488	\| IDENTIFIER LBRAC enumerator_list RBRAC
	489	\| IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	490	\| ID_TYPE LBRAC enumerator_list RBRAC
	491	\| ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	492	\| LBRAC enumerator_list COMMA RBRAC
	493	\| LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	494	\| IDENTIFIER LBRAC enumerator_list COMMA RBRAC
	495	\| IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	496	\| IDENTIFIER
	497	\| IDENTIFIER LT type_specifier_or_integer_constant GT
	498	\| ID_TYPE LBRAC enumerator_list COMMA RBRAC
	499	\| ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	500	\| ID_TYPE
	501	\| ID_TYPE LT type_specifier_or_integer_constant GT
	502	;
	503
	504	struct_or_variant_declaration_list:
	505	/* empty */
	506	\| struct_or_variant_declaration_list struct_or_variant_declaration
	507	;
	508
	509	struct_or_variant_declaration:
	510	specifier_qualifier_list struct_or_variant_declarator_list SEMICOLON
	511	\| specifier_qualifier_list TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
	512	\| TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
	513	\| specifier_qualifier_list TYPEDEF type_declarator_list SEMICOLON
	514	\| TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON specifier_qualifier_list abstract_type_declarator_list SEMICOLON
	515	\| TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON type_declarator_list SEMICOLON
	516	;
	517
	518	specifier_qualifier_list:
	519	CONST
	520	\| type_specifier
	521	\| specifier_qualifier_list CONST
	522	\| specifier_qualifier_list type_specifier
	523	;
	524
	525	struct_or_variant_declarator_list:
	526	struct_or_variant_declarator
	527	\| struct_or_variant_declarator_list COMMA struct_or_variant_declarator
	528	;
	529
	530	struct_or_variant_declarator:
	531	declarator
	532	\| COLON unary_expression
	533	\| declarator COLON unary_expression
	534	;
	535
	536	enumerator_list:
	537	enumerator
	538	\| enumerator_list COMMA enumerator
	539	;
540
541	enumerator:
542	IDENTIFIER
543	\| ID_TYPE
544	\| keywords
545	\| STRING_LITERAL_START DQUOTE
546	\| STRING_LITERAL_START s_char_sequence DQUOTE
547	\| IDENTIFIER EQUAL unary_expression_or_range
548	\| ID_TYPE EQUAL unary_expression_or_range
549	\| keywords EQUAL unary_expression_or_range
550	\| STRING_LITERAL_START DQUOTE EQUAL unary_expression_or_range
551	\| STRING_LITERAL_START s_char_sequence DQUOTE EQUAL unary_expression_or_range
552	;
553
554	abstract_declarator_list:
555	abstract_declarator
556	\| abstract_declarator_list COMMA abstract_declarator
557	;
558
559	abstract_declarator:
560	direct_abstract_declarator
561	\| pointer direct_abstract_declarator
562	;
563
564	direct_abstract_declarator:
565	/* empty */
566	\| IDENTIFIER
567	\| LPAREN abstract_declarator RPAREN
568	\| direct_abstract_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
569	\| direct_abstract_declarator LSBRAC RSBRAC
570	;
571
572	declarator:
573	direct_declarator
574	\| pointer direct_declarator
575	;
576
577	direct_declarator:
578	IDENTIFIER
579	\| LPAREN declarator RPAREN
580	\| direct_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
581	;
582
583	type_declarator:
584	direct_type_declarator
585	\| pointer direct_type_declarator
586	;
587
588	direct_type_declarator:
589	IDENTIFIER
fce8006d	590	{ add_type(scanner, $1->s); }
8b9d5b5e MD	591	\| LPAREN type_declarator RPAREN
	592	\| direct_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	593	;
	594
	595	abstract_type_declarator:
	596	direct_abstract_type_declarator
	597	\| pointer direct_abstract_type_declarator
	598	;
	599
	600	direct_abstract_type_declarator:
	601	/* empty */
	602	\| IDENTIFIER
fce8006d	603	{ add_type(scanner, $1->s); }
8b9d5b5e MD	604	\| LPAREN abstract_type_declarator RPAREN
	605	\| direct_abstract_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	606	\| direct_abstract_type_declarator LSBRAC RSBRAC
	607	;
	608
	609	pointer:
	610	STAR
	611	\| STAR pointer
	612	\| STAR type_qualifier_list pointer
	613	;
	614
	615	type_qualifier_list:
	616	CONST
	617	\| type_qualifier_list CONST
	618	;
	619
	620	/* 2.3: CTF-specific declarations */
	621
	622	ctf_assignment_expression_list:
	623	ctf_assignment_expression SEMICOLON
	624	\| ctf_assignment_expression_list ctf_assignment_expression SEMICOLON
	625	;
	626
	627	ctf_assignment_expression:
	628	unary_expression EQUAL unary_expression
	629	\| unary_expression TYPEASSIGN type_specifier
	630	\| declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list
	631	\| TYPEDEF declaration_specifiers type_declarator_list
	632	\| declaration_specifiers TYPEDEF type_declarator_list
	633	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list
	634	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list
	635	;