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

%{
/*
 * ctf.y
 *
 * Common Trace Format Metadata Grammar.
 */

#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 scope *scope, struct 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 scope *scope)
{
	g_hash_table_destroy(scope->types);
}

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

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

static void pop_scope(struct ctf_scanner *scanner)
{
	struct 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 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 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	%{
	2	/*
	3	* ctf.y
	4	*
	5	* Common Trace Format Metadata Grammar.
	6	*/
	7
	8	#include <stdio.h>
	9	#include <unistd.h>
	10	#include <string.h>
	11	#include <stdlib.h>
	12	#include <assert.h>
	13	#include <helpers/list.h>
	14	#include <glib.h>
34d3acc4	15	#include "ctf-scanner.h"
8b9d5b5e MD	16	#include "ctf-parser.h"
	17	#include "ctf-ast.h"
	18
	19	#define printf_dbg(fmt, args...) fprintf(stderr, "%s: " fmt, __func__, args)
	20	#define printf_dbg_noarg(fmt) fprintf(stderr, "%s: " fmt, __func__)
	21
34d3acc4 MD	22	int yyparse(struct ctf_scanner *scanner);
	23	int yylex(union YYSTYPE yyval, struct ctf_scanner scanner);
	24	int yylex_init_extra(struct ctf_scanner scanner, yyscan_t ptr_yy_globals);
	25	int yylex_destroy(yyscan_t yyscanner) ;
	26	void yyset_in(FILE * in_str, yyscan_t scanner);
8b9d5b5e	27
8b9d5b5e MD	28	int yydebug;
8b9d5b5e MD	29
8b9d5b5e MD	30	struct gc_string {
	31	struct cds_list_head gc;
	32	char s[];
	33	};
	34
8b9d5b5e MD	35	char strredup(char dest, const char src)
	36	{
	37	size_t len = strlen(src) + 1;
	38
	39	dest = realloc(dest, len);
	40	if (!*dest)
	41	return NULL;
	42	strcpy(*dest, src);
	43	return *dest;
	44	}
	45
34d3acc4	46	static struct gc_string gc_string_alloc(struct ctf_scanner scanner, size_t len)
8b9d5b5e MD	47	{
	48	struct gc_string *gstr;
	49
	50	gstr = malloc(sizeof(*gstr) + len);
34d3acc4	51	cds_list_add(&gstr->gc, &scanner->allocated_strings);
8b9d5b5e MD	52	return gstr;
	53	}
	54
34d3acc4	55	void setstring(struct ctf_scanner scanner, YYSTYPE lvalp, const char *src)
8b9d5b5e	56	{
34d3acc4 MD	57	lvalp->gs = gc_string_alloc(scanner, strlen(src) + 1);
34d3acc4 MD	58	strcpy(lvalp->gs->s, src);
8b9d5b5e MD	59	}
	60
	61	static void init_scope(struct scope scope, struct scope parent)
	62	{
	63	scope->parent = parent;
	64	scope->types = g_hash_table_new_full(g_str_hash, g_str_equal,
	65	(GDestroyNotify) free, NULL);
	66	}
	67
	68	static void finalize_scope(struct scope *scope)
	69	{
	70	g_hash_table_destroy(scope->types);
	71	}
	72
34d3acc4	73	static void push_scope(struct ctf_scanner *scanner)
8b9d5b5e MD	74	{
	75	struct scope *ns;
	76
	77	printf_dbg_noarg("push scope\n");
	78	ns = malloc(sizeof(struct scope));
34d3acc4 MD	79	init_scope(ns, scanner->cs);
34d3acc4 MD	80	scanner->cs = ns;
8b9d5b5e MD	81	}
8b9d5b5e MD	82
34d3acc4	83	static void pop_scope(struct ctf_scanner *scanner)
8b9d5b5e MD	84	{
	85	struct scope *os;
	86
	87	printf_dbg_noarg("pop scope\n");
34d3acc4 MD	88	os = scanner->cs;
34d3acc4 MD	89	scanner->cs = os->parent;
8b9d5b5e MD	90	finalize_scope(os);
	91	free(os);
	92	}
	93
34d3acc4	94	static int lookup_type(struct scope s, const char id)
8b9d5b5e MD	95	{
	96	int ret;
	97
	98	ret = (int) g_hash_table_lookup(s->types, id);
	99	printf_dbg("lookup %p %s %d\n", s, id, ret);
	100	return ret;
	101	}
	102
34d3acc4	103	int is_type(struct ctf_scanner scanner, const char id)
8b9d5b5e MD	104	{
	105	struct scope *it;
	106	int ret = 0;
	107
34d3acc4	108	for (it = scanner->cs; it != NULL; it = it->parent) {
8b9d5b5e MD	109	if (lookup_type(it, id)) {
	110	ret = 1;
	111	break;
	112	}
	113	}
	114	printf_dbg("is type %s %d\n", id, ret);
	115	return ret;
	116	}
	117
34d3acc4	118	static void add_type(struct ctf_scanner scanner, const char id)
8b9d5b5e MD	119	{
	120	char *type_id = NULL;
	121
	122	printf_dbg("add type %s\n", id);
34d3acc4	123	if (lookup_type(scanner->cs, id))
8b9d5b5e MD	124	return;
8b9d5b5e MD	125	strredup(&type_id, id);
34d3acc4	126	g_hash_table_insert(scanner->cs->types, type_id, type_id);
8b9d5b5e MD	127	}
8b9d5b5e MD	128
34d3acc4	129	void yyerror(struct ctf_scanner scanner, const char str)
8b9d5b5e MD	130	{
	131	fprintf(stderr, "error %s\n", str);
	132	}
	133
	134	int yywrap(void)
	135	{
	136	return 1;
	137	}
	138
34d3acc4	139	static void free_strings(struct cds_list_head *list)
8b9d5b5e MD	140	{
	141	struct gc_string gstr, tmp;
	142
34d3acc4	143	cds_list_for_each_entry_safe(gstr, tmp, list, gc)
8b9d5b5e MD	144	free(gstr);
	145	}
	146
34d3acc4	147	static struct ctf_ast *ctf_ast_alloc(void)
8b9d5b5e	148	{
34d3acc4 MD	149	struct ctf_ast *ast;
	150
	151	ast = malloc(sizeof(*ast));
	152	if (!ast)
	153	return NULL;
	154	memset(ast, 0, sizeof(*ast));
	155	return ast;
	156	}
	157
	158	static void ctf_ast_free(struct ctf_ast *ast)
	159	{
	160	}
	161
	162	int ctf_scanner_append_ast(struct ctf_scanner *scanner)
	163	{
	164	return yyparse(scanner);
	165	}
	166
	167	struct ctf_scanner ctf_scanner_alloc(FILE input)
	168	{
	169	struct ctf_scanner *scanner;
	170	int ret;
	171
	172	scanner = malloc(sizeof(*scanner));
	173	if (!scanner)
	174	return NULL;
	175	memset(scanner, 0, sizeof(*scanner));
	176
	177	ret = yylex_init_extra(scanner, &scanner->scanner);
	178	if (ret) {
	179	fprintf(stderr, "yylex_init error\n");
	180	goto cleanup_scanner;
	181	}
	182	yyset_in(input, scanner);
	183
	184	scanner->ast = ctf_ast_alloc();
	185	if (!scanner->ast)
	186	goto cleanup_lexer;
	187	init_scope(&scanner->root_scope, NULL);
	188	CDS_INIT_LIST_HEAD(&scanner->allocated_strings);
	189
	190	return scanner;
	191
	192	cleanup_lexer:
	193	ret = yylex_destroy(scanner->scanner);
	194	if (!ret)
	195	fprintf(stderr, "yylex_destroy error\n");
	196	cleanup_scanner:
	197	free(scanner);
	198	return NULL;
	199	}
	200
	201	void ctf_scanner_free(struct ctf_scanner *scanner)
	202	{
	203	int ret;
	204
	205	finalize_scope(&scanner->root_scope);
	206	free_strings(&scanner->allocated_strings);
	207	ctf_ast_free(scanner->ast);
	208	ret = yylex_destroy(scanner->scanner);
	209	if (ret)
	210	fprintf(stderr, "yylex_destroy error\n");
	211	free(scanner);
	212	}
8b9d5b5e MD	213
	214	%}
	215
34d3acc4 MD	216	%define api.pure
	217	/* %locations */
	218	%parse-param {struct ctf_scanner *scanner}
	219	%lex-param {struct ctf_scanner *scanner}
8b9d5b5e	220	%start file
8b9d5b5e MD	221	%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
	222	%token <gs> IDENTIFIER ID_TYPE
	223	%token ERROR
	224	%union
	225	{
	226	long long ll;
	227	char c;
	228	struct gc_string *gs;
	229	struct ctf_node *n;
	230	}
	231
8b9d5b5e MD	232	%%
	233
	234	file:
	235	declaration
	236	\| file declaration
	237	;
	238
	239	keywords:
	240	VOID
	241	\| CHAR
	242	\| SHORT
	243	\| INT
	244	\| LONG
	245	\| FLOAT
	246	\| DOUBLE
	247	\| SIGNED
	248	\| UNSIGNED
	249	\| _BOOL
	250	\| _COMPLEX
	251	\| FLOATING_POINT
	252	\| INTEGER
	253	\| STRING
	254	\| ENUM
	255	\| VARIANT
	256	\| STRUCT
	257	\| CONST
	258	\| TYPEDEF
	259	\| EVENT
	260	\| STREAM
	261	\| TRACE
	262	;
	263
	264	/* 1.5 Constants */
	265
	266	c_char_sequence:
	267	c_char
	268	\| c_char_sequence c_char
	269	;
	270
	271	c_char:
	272	CHAR_STRING_TOKEN
	273	\| ESCSEQ
	274	;
	275
	276	/* 1.6 String literals */
	277
	278	s_char_sequence:
	279	s_char
	280	\| s_char_sequence s_char
	281	;
	282
	283	s_char:
	284	CHAR_STRING_TOKEN
	285	\| ESCSEQ
	286	;
	287
	288	/* 2: Phrase structure grammar */
	289
	290	postfix_expression:
	291	IDENTIFIER
	292	\| ID_TYPE
	293	\| keywords
	294	\| DECIMAL_CONSTANT
	295	\| OCTAL_CONSTANT
296	\| HEXADECIMAL_CONSTANT
297	\| STRING_LITERAL_START DQUOTE
298	\| STRING_LITERAL_START s_char_sequence DQUOTE
299	\| CHARACTER_CONSTANT_START c_char_sequence SQUOTE
300	\| LPAREN unary_expression RPAREN
301	\| postfix_expression LSBRAC unary_expression RSBRAC
302	\| postfix_expression DOT IDENTIFIER
303	\| postfix_expression DOT ID_TYPE
304	\| postfix_expression RARROW IDENTIFIER
305	\| postfix_expression RARROW ID_TYPE
306	;
307
308	unary_expression:
309	postfix_expression
310	\| PLUS postfix_expression
311	\| MINUS postfix_expression
312	;
313
314	unary_expression_or_range:
315	unary_expression DOTDOTDOT unary_expression
316	\| unary_expression
317	;
318
319	/* 2.2: Declarations */
320
321	declaration:
322	declaration_specifiers SEMICOLON
323	\| event_declaration
324	\| stream_declaration
325	\| trace_declaration
326	\| declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
327	\| TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
328	\| declaration_specifiers TYPEDEF type_declarator_list SEMICOLON
329	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list SEMICOLON
330	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list SEMICOLON
331	;
332
333	event_declaration:
334	event_declaration_begin event_declaration_end
335	\| event_declaration_begin ctf_assignment_expression_list event_declaration_end
336	;
337
338	event_declaration_begin:
339	EVENT LBRAC
340	{
34d3acc4	341	push_scope(scanner);
8b9d5b5e MD	342	}
	343	;
	344
	345	event_declaration_end:
	346	RBRAC SEMICOLON
	347	{
34d3acc4	348	pop_scope(scanner);
8b9d5b5e MD	349	}
	350	;
	351
	352
	353	stream_declaration:
	354	stream_declaration_begin stream_declaration_end
	355	\| stream_declaration_begin ctf_assignment_expression_list stream_declaration_end
	356	;
	357
	358	stream_declaration_begin:
	359	STREAM LBRAC
	360	{
34d3acc4	361	push_scope(scanner);
8b9d5b5e MD	362	}
	363	;
	364
	365	stream_declaration_end:
	366	RBRAC SEMICOLON
	367	{
34d3acc4	368	pop_scope(scanner);
8b9d5b5e MD	369	}
	370	;
	371
	372
	373	trace_declaration:
	374	trace_declaration_begin trace_declaration_end
	375	\| trace_declaration_begin ctf_assignment_expression_list trace_declaration_end
	376	;
	377
	378	trace_declaration_begin:
	379	TRACE LBRAC
	380	{
34d3acc4	381	push_scope(scanner);
8b9d5b5e MD	382	}
	383	;
	384
	385	trace_declaration_end:
	386	RBRAC SEMICOLON
	387	{
34d3acc4	388	pop_scope(scanner);
8b9d5b5e MD	389	}
	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
	443	{
34d3acc4	444	push_scope(scanner);
8b9d5b5e MD	445	}
	446	;
	447
	448	struct_declaration_end:
	449	RBRAC
	450	{
34d3acc4	451	pop_scope(scanner);
8b9d5b5e MD	452	}
	453	;
	454
	455	variant_type_specifier:
	456	variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	457	\| LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	458	\| LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	459	\| IDENTIFIER variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	460	\| IDENTIFIER LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	461	\| IDENTIFIER LT IDENTIFIER GT
	462	\| IDENTIFIER LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	463	\| IDENTIFIER LT ID_TYPE GT
	464	\| ID_TYPE variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	465	\| ID_TYPE LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	466	\| ID_TYPE LT IDENTIFIER GT
	467	\| ID_TYPE LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
	468	\| ID_TYPE LT ID_TYPE GT
	469	;
	470
	471	variant_declaration_begin:
	472	LBRAC
	473	{
34d3acc4	474	push_scope(scanner);
8b9d5b5e MD	475	}
	476	;
	477
	478	variant_declaration_end:
	479	RBRAC
	480	{
34d3acc4	481	pop_scope(scanner);
8b9d5b5e MD	482	}
	483	;
	484
	485	type_specifier_or_integer_constant:
	486	declaration_specifiers
	487	\| DECIMAL_CONSTANT
	488	\| OCTAL_CONSTANT
	489	\| HEXADECIMAL_CONSTANT
	490	;
	491
	492	enum_type_specifier:
	493	LBRAC enumerator_list RBRAC
	494	\| LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	495	\| IDENTIFIER LBRAC enumerator_list RBRAC
	496	\| IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	497	\| ID_TYPE LBRAC enumerator_list RBRAC
	498	\| ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
	499	\| LBRAC enumerator_list COMMA RBRAC
	500	\| LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	501	\| IDENTIFIER LBRAC enumerator_list COMMA RBRAC
	502	\| IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	503	\| IDENTIFIER
	504	\| IDENTIFIER LT type_specifier_or_integer_constant GT
	505	\| ID_TYPE LBRAC enumerator_list COMMA RBRAC
	506	\| ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
	507	\| ID_TYPE
	508	\| ID_TYPE LT type_specifier_or_integer_constant GT
	509	;
	510
	511	struct_or_variant_declaration_list:
	512	/* empty */
	513	\| struct_or_variant_declaration_list struct_or_variant_declaration
	514	;
	515
	516	struct_or_variant_declaration:
	517	specifier_qualifier_list struct_or_variant_declarator_list SEMICOLON
	518	\| specifier_qualifier_list TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
	519	\| TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
	520	\| specifier_qualifier_list TYPEDEF type_declarator_list SEMICOLON
	521	\| TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON specifier_qualifier_list abstract_type_declarator_list SEMICOLON
	522	\| TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON type_declarator_list SEMICOLON
	523	;
	524
	525	specifier_qualifier_list:
	526	CONST
	527	\| type_specifier
	528	\| specifier_qualifier_list CONST
	529	\| specifier_qualifier_list type_specifier
	530	;
	531
	532	struct_or_variant_declarator_list:
	533	struct_or_variant_declarator
	534	\| struct_or_variant_declarator_list COMMA struct_or_variant_declarator
	535	;
	536
	537	struct_or_variant_declarator:
	538	declarator
	539	\| COLON unary_expression
	540	\| declarator COLON unary_expression
	541	;
	542
	543	enumerator_list:
	544	enumerator
	545	\| enumerator_list COMMA enumerator
546	;
547
548	enumerator:
549	IDENTIFIER
550	\| ID_TYPE
551	\| keywords
552	\| STRING_LITERAL_START DQUOTE
553	\| STRING_LITERAL_START s_char_sequence DQUOTE
554	\| IDENTIFIER EQUAL unary_expression_or_range
555	\| ID_TYPE EQUAL unary_expression_or_range
556	\| keywords EQUAL unary_expression_or_range
557	\| STRING_LITERAL_START DQUOTE EQUAL unary_expression_or_range
558	\| STRING_LITERAL_START s_char_sequence DQUOTE EQUAL unary_expression_or_range
559	;
560
561	abstract_declarator_list:
562	abstract_declarator
563	\| abstract_declarator_list COMMA abstract_declarator
564	;
565
566	abstract_declarator:
567	direct_abstract_declarator
568	\| pointer direct_abstract_declarator
569	;
570
571	direct_abstract_declarator:
572	/* empty */
573	\| IDENTIFIER
574	\| LPAREN abstract_declarator RPAREN
575	\| direct_abstract_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
576	\| direct_abstract_declarator LSBRAC RSBRAC
577	;
578
579	declarator:
580	direct_declarator
581	\| pointer direct_declarator
582	;
583
584	direct_declarator:
585	IDENTIFIER
586	\| LPAREN declarator RPAREN
587	\| direct_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
588	;
589
590	type_declarator:
591	direct_type_declarator
592	\| pointer direct_type_declarator
593	;
594
595	direct_type_declarator:
596	IDENTIFIER
597	{
34d3acc4	598	add_type(scanner, $1->s);
8b9d5b5e MD	599	}
	600	\| LPAREN type_declarator RPAREN
	601	\| direct_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	602	;
	603
	604	abstract_type_declarator:
	605	direct_abstract_type_declarator
	606	\| pointer direct_abstract_type_declarator
	607	;
	608
	609	direct_abstract_type_declarator:
	610	/* empty */
	611	\| IDENTIFIER
	612	{
34d3acc4	613	add_type(scanner, $1->s);
8b9d5b5e MD	614	}
	615	\| LPAREN abstract_type_declarator RPAREN
	616	\| direct_abstract_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
	617	\| direct_abstract_type_declarator LSBRAC RSBRAC
	618	;
	619
	620	pointer:
	621	STAR
	622	\| STAR pointer
	623	\| STAR type_qualifier_list pointer
	624	;
	625
	626	type_qualifier_list:
	627	CONST
	628	\| type_qualifier_list CONST
	629	;
	630
	631	/* 2.3: CTF-specific declarations */
	632
	633	ctf_assignment_expression_list:
	634	ctf_assignment_expression SEMICOLON
	635	\| ctf_assignment_expression_list ctf_assignment_expression SEMICOLON
	636	;
	637
	638	ctf_assignment_expression:
	639	unary_expression EQUAL unary_expression
	640	\| unary_expression TYPEASSIGN type_specifier
	641	\| declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list
	642	\| TYPEDEF declaration_specifiers type_declarator_list
	643	\| declaration_specifiers TYPEDEF type_declarator_list
	644	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list
	645	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list
	646	;