[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-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(void);
int yylex(void);

static CDS_LIST_HEAD(allocated_strings);
int yydebug;

struct scope;
struct scope {
	struct scope *parent;
	GHashTable *types;
};

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

struct scope root_scope;
struct scope *cs = &root_scope;	/* current scope */

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(size_t len)
{
	struct gc_string *gstr;

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

void setstring(const char *src)
{
	yylval.gs = gc_string_alloc(strlen(src) + 1);
	strcpy(yylval.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(void)
{
	struct scope *ns;

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

static void pop_scope(void)
{
	struct scope *os;

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

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(const char *id)
{
	struct scope *it;
	int ret = 0;

	for (it = 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(const char *id)
{
	char *type_id = NULL;

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

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

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

	cds_list_for_each_entry_safe(gstr, tmp, &allocated_strings, gc)
		free(gstr);
}

int main(int argc, char **argv)
{
	yydebug = 1;
	init_scope(&root_scope, NULL);
	yyparse();
	finalize_scope(&root_scope);
	free_strings();
	return 0;
} 

%}

%start file
/* %glr-parser */
%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;
}

/* %token <c>UPPERCASE_L LOWERCASE_L _U _NONDIGIT */
/*%type <n> decl type_decl event_decl stream_decl trace_decl type_def
%type <n> event_attrib field_attrib assign_attrib 
%type <n> event_attrib_list attrib_list field_list appendval_list
%type <n> field value type_expr typename typename_postfix
%type <gs> typename_prefix identifier */
%%

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();
		}
	;

event_declaration_end:
		RBRAC SEMICOLON
		{
			pop_scope();
		}
	;


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();
		}
	;

stream_declaration_end:
		RBRAC SEMICOLON
		{
			pop_scope();
		}
	;


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();
		}
	;

trace_declaration_end:
		RBRAC SEMICOLON
		{
			pop_scope();
		}
	;

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();
		}
	;

struct_declaration_end:
		RBRAC
		{
			pop_scope();
		}
	;

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();
		}
	;

variant_declaration_end:
		RBRAC
		{
			pop_scope();
		}
	;

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($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($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>
	15	#include "ctf-parser.h"
	16	#include "ctf-ast.h"
	17
	18	#define printf_dbg(fmt, args...) fprintf(stderr, "%s: " fmt, __func__, args)
	19	#define printf_dbg_noarg(fmt) fprintf(stderr, "%s: " fmt, __func__)
	20
	21	int yyparse(void);
	22	int yylex(void);
	23
	24	static CDS_LIST_HEAD(allocated_strings);
	25	int yydebug;
	26
	27	struct scope;
	28	struct scope {
	29	struct scope *parent;
	30	GHashTable *types;
	31	};
	32
	33	struct gc_string {
	34	struct cds_list_head gc;
	35	char s[];
	36	};
	37
	38	struct scope root_scope;
	39	struct scope cs = &root_scope; / current scope */
	40
	41	char strredup(char dest, const char src)
	42	{
	43	size_t len = strlen(src) + 1;
	44
	45	dest = realloc(dest, len);
	46	if (!*dest)
	47	return NULL;
	48	strcpy(*dest, src);
	49	return *dest;
	50	}
	51
	52	static struct gc_string *gc_string_alloc(size_t len)
	53	{
	54	struct gc_string *gstr;
	55
	56	gstr = malloc(sizeof(*gstr) + len);
	57	cds_list_add(&gstr->gc, &allocated_strings);
	58	return gstr;
	59	}
	60
	61	void setstring(const char *src)
	62	{
	63	yylval.gs = gc_string_alloc(strlen(src) + 1);
	64	strcpy(yylval.gs->s, src);
65	}
66
67	static void init_scope(struct scope scope, struct scope parent)
68	{
69	scope->parent = parent;
70	scope->types = g_hash_table_new_full(g_str_hash, g_str_equal,
71	(GDestroyNotify) free, NULL);
72	}
73
74	static void finalize_scope(struct scope *scope)
75	{
76	g_hash_table_destroy(scope->types);
77	}
78
79	static void push_scope(void)
80	{
81	struct scope *ns;
82
83	printf_dbg_noarg("push scope\n");
84	ns = malloc(sizeof(struct scope));
85	init_scope(ns, cs);
86	cs = ns;
87	}
88
89	static void pop_scope(void)
90	{
91	struct scope *os;
92
93	printf_dbg_noarg("pop scope\n");
94	os = cs;
95	cs = os->parent;
96	finalize_scope(os);
97	free(os);
98	}
99
100	int lookup_type(struct scope s, const char id)
101	{
102	int ret;
103
104	ret = (int) g_hash_table_lookup(s->types, id);
105	printf_dbg("lookup %p %s %d\n", s, id, ret);
106	return ret;
107	}
108
109	int is_type(const char *id)
110	{
111	struct scope *it;
112	int ret = 0;
113
114	for (it = cs; it != NULL; it = it->parent) {
115	if (lookup_type(it, id)) {
116	ret = 1;
117	break;
118	}
119	}
120	printf_dbg("is type %s %d\n", id, ret);
121	return ret;
122	}
123
124	static void add_type(const char *id)
125	{
126	char *type_id = NULL;
127
128	printf_dbg("add type %s\n", id);
129	if (lookup_type(cs, id))
130	return;
131	strredup(&type_id, id);
132	g_hash_table_insert(cs->types, type_id, type_id);
133	}
134
135	void yyerror(const char *str)
136	{
137	fprintf(stderr, "error %s\n", str);
138	}
139
140	int yywrap(void)
141	{
142	return 1;
143	}
144
145	static void free_strings(void)
146	{
147	struct gc_string gstr, tmp;
148
149	cds_list_for_each_entry_safe(gstr, tmp, &allocated_strings, gc)
150	free(gstr);
151	}
152
153	int main(int argc, char **argv)
154	{
155	yydebug = 1;
156	init_scope(&root_scope, NULL);
157	yyparse();
158	finalize_scope(&root_scope);
159	free_strings();
160	return 0;
161	}
162
163	%}
164
165	%start file
166	/* %glr-parser */
167	%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
168	%token <gs> IDENTIFIER ID_TYPE
169	%token ERROR
170	%union
171	{
172	long long ll;
173	char c;
174	struct gc_string *gs;
175	struct ctf_node *n;
176	}
177
178	/* %token <c>UPPERCASE_L LOWERCASE_L _U _NONDIGIT */
179	/*%type <n> decl type_decl event_decl stream_decl trace_decl type_def
180	%type <n> event_attrib field_attrib assign_attrib
181	%type <n> event_attrib_list attrib_list field_list appendval_list
182	%type <n> field value type_expr typename typename_postfix
183	%type <gs> typename_prefix identifier */
184	%%
185
186	file:
187	declaration
188	\| file declaration
189	;
190
191	keywords:
192	VOID
193	\| CHAR
194	\| SHORT
195	\| INT
196	\| LONG
197	\| FLOAT
198	\| DOUBLE
199	\| SIGNED
200	\| UNSIGNED
201	\| _BOOL
202	\| _COMPLEX
203	\| FLOATING_POINT
204	\| INTEGER
205	\| STRING
206	\| ENUM
207	\| VARIANT
208	\| STRUCT
209	\| CONST
210	\| TYPEDEF
211	\| EVENT
212	\| STREAM
213	\| TRACE
214	;
215
216	/* 1.5 Constants */
217
218	c_char_sequence:
219	c_char
220	\| c_char_sequence c_char
221	;
222
223	c_char:
224	CHAR_STRING_TOKEN
225	\| ESCSEQ
226	;
227
228	/* 1.6 String literals */
229
230	s_char_sequence:
231	s_char
232	\| s_char_sequence s_char
233	;
234
235	s_char:
236	CHAR_STRING_TOKEN
237	\| ESCSEQ
238	;
239
240	/* 2: Phrase structure grammar */
241
242	postfix_expression:
243	IDENTIFIER
244	\| ID_TYPE
245	\| keywords
246	\| DECIMAL_CONSTANT
247	\| OCTAL_CONSTANT
248	\| HEXADECIMAL_CONSTANT
249	\| STRING_LITERAL_START DQUOTE
250	\| STRING_LITERAL_START s_char_sequence DQUOTE
251	\| CHARACTER_CONSTANT_START c_char_sequence SQUOTE
252	\| LPAREN unary_expression RPAREN
253	\| postfix_expression LSBRAC unary_expression RSBRAC
254	\| postfix_expression DOT IDENTIFIER
255	\| postfix_expression DOT ID_TYPE
256	\| postfix_expression RARROW IDENTIFIER
257	\| postfix_expression RARROW ID_TYPE
258	;
259
260	unary_expression:
261	postfix_expression
262	\| PLUS postfix_expression
263	\| MINUS postfix_expression
264	;
265
266	unary_expression_or_range:
267	unary_expression DOTDOTDOT unary_expression
268	\| unary_expression
269	;
270
271	/* 2.2: Declarations */
272
273	declaration:
274	declaration_specifiers SEMICOLON
275	\| event_declaration
276	\| stream_declaration
277	\| trace_declaration
278	\| declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
279	\| TYPEDEF declaration_specifiers type_declarator_list SEMICOLON
280	\| declaration_specifiers TYPEDEF type_declarator_list SEMICOLON
281	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list SEMICOLON
282	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list SEMICOLON
283	;
284
285	event_declaration:
286	event_declaration_begin event_declaration_end
287	\| event_declaration_begin ctf_assignment_expression_list event_declaration_end
288	;
289
290	event_declaration_begin:
291	EVENT LBRAC
292	{
293	push_scope();
294	}
295	;
296
297	event_declaration_end:
298	RBRAC SEMICOLON
299	{
300	pop_scope();
301	}
302	;
303
304
305	stream_declaration:
306	stream_declaration_begin stream_declaration_end
307	\| stream_declaration_begin ctf_assignment_expression_list stream_declaration_end
308	;
309
310	stream_declaration_begin:
311	STREAM LBRAC
312	{
313	push_scope();
314	}
315	;
316
317	stream_declaration_end:
318	RBRAC SEMICOLON
319	{
320	pop_scope();
321	}
322	;
323
324
325	trace_declaration:
326	trace_declaration_begin trace_declaration_end
327	\| trace_declaration_begin ctf_assignment_expression_list trace_declaration_end
328	;
329
330	trace_declaration_begin:
331	TRACE LBRAC
332	{
333	push_scope();
334	}
335	;
336
337	trace_declaration_end:
338	RBRAC SEMICOLON
339	{
340	pop_scope();
341	}
342	;
343
344	declaration_specifiers:
345	CONST
346	\| type_specifier
347	\| declaration_specifiers CONST
348	\| declaration_specifiers type_specifier
349	;
350
351	type_declarator_list:
352	type_declarator
353	\| type_declarator_list COMMA type_declarator
354	;
355
356	abstract_type_declarator_list:
357	abstract_type_declarator
358	\| abstract_type_declarator_list COMMA abstract_type_declarator
359	;
360
361	type_specifier:
362	VOID
363	\| CHAR
364	\| SHORT
365	\| INT
366	\| LONG
367	\| FLOAT
368	\| DOUBLE
369	\| SIGNED
370	\| UNSIGNED
371	\| _BOOL
372	\| _COMPLEX
373	\| ID_TYPE
374	\| FLOATING_POINT LBRAC RBRAC
375	\| FLOATING_POINT LBRAC ctf_assignment_expression_list RBRAC
376	\| INTEGER LBRAC RBRAC
377	\| INTEGER LBRAC ctf_assignment_expression_list RBRAC
378	\| STRING LBRAC RBRAC
379	\| STRING LBRAC ctf_assignment_expression_list RBRAC
380	\| ENUM enum_type_specifier
381	\| VARIANT variant_type_specifier
382	\| STRUCT struct_type_specifier
383	;
384
385	struct_type_specifier:
386	struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
387	\| IDENTIFIER struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
388	\| ID_TYPE struct_declaration_begin struct_or_variant_declaration_list struct_declaration_end
389	\| IDENTIFIER
390	\| ID_TYPE
391	;
392
393	struct_declaration_begin:
394	LBRAC
395	{
396	push_scope();
397	}
398	;
399
400	struct_declaration_end:
401	RBRAC
402	{
403	pop_scope();
404	}
405	;
406
407	variant_type_specifier:
408	variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
409	\| LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
410	\| LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
411	\| IDENTIFIER variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
412	\| IDENTIFIER LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
413	\| IDENTIFIER LT IDENTIFIER GT
414	\| IDENTIFIER LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
415	\| IDENTIFIER LT ID_TYPE GT
416	\| ID_TYPE variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
417	\| ID_TYPE LT IDENTIFIER GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
418	\| ID_TYPE LT IDENTIFIER GT
419	\| ID_TYPE LT ID_TYPE GT variant_declaration_begin struct_or_variant_declaration_list variant_declaration_end
420	\| ID_TYPE LT ID_TYPE GT
421	;
422
423	variant_declaration_begin:
424	LBRAC
425	{
426	push_scope();
427	}
428	;
429
430	variant_declaration_end:
431	RBRAC
432	{
433	pop_scope();
434	}
435	;
436
437	type_specifier_or_integer_constant:
438	declaration_specifiers
439	\| DECIMAL_CONSTANT
440	\| OCTAL_CONSTANT
441	\| HEXADECIMAL_CONSTANT
442	;
443
444	enum_type_specifier:
445	LBRAC enumerator_list RBRAC
446	\| LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
447	\| IDENTIFIER LBRAC enumerator_list RBRAC
448	\| IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
449	\| ID_TYPE LBRAC enumerator_list RBRAC
450	\| ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list RBRAC
451	\| LBRAC enumerator_list COMMA RBRAC
452	\| LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
453	\| IDENTIFIER LBRAC enumerator_list COMMA RBRAC
454	\| IDENTIFIER LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
455	\| IDENTIFIER
456	\| IDENTIFIER LT type_specifier_or_integer_constant GT
457	\| ID_TYPE LBRAC enumerator_list COMMA RBRAC
458	\| ID_TYPE LT type_specifier_or_integer_constant GT LBRAC enumerator_list COMMA RBRAC
459	\| ID_TYPE
460	\| ID_TYPE LT type_specifier_or_integer_constant GT
461	;
462
463	struct_or_variant_declaration_list:
464	/* empty */
465	\| struct_or_variant_declaration_list struct_or_variant_declaration
466	;
467
468	struct_or_variant_declaration:
469	specifier_qualifier_list struct_or_variant_declarator_list SEMICOLON
470	\| specifier_qualifier_list TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
471	\| TYPEDEF specifier_qualifier_list type_declarator_list SEMICOLON
472	\| specifier_qualifier_list TYPEDEF type_declarator_list SEMICOLON
473	\| TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON specifier_qualifier_list abstract_type_declarator_list SEMICOLON
474	\| TYPEALIAS specifier_qualifier_list abstract_declarator_list COLON type_declarator_list SEMICOLON
475	;
476
477	specifier_qualifier_list:
478	CONST
479	\| type_specifier
480	\| specifier_qualifier_list CONST
481	\| specifier_qualifier_list type_specifier
482	;
483
484	struct_or_variant_declarator_list:
485	struct_or_variant_declarator
486	\| struct_or_variant_declarator_list COMMA struct_or_variant_declarator
487	;
488
489	struct_or_variant_declarator:
490	declarator
491	\| COLON unary_expression
492	\| declarator COLON unary_expression
493	;
494
495	enumerator_list:
496	enumerator
497	\| enumerator_list COMMA enumerator
498	;
499
500	enumerator:
501	IDENTIFIER
502	\| ID_TYPE
503	\| keywords
504	\| STRING_LITERAL_START DQUOTE
505	\| STRING_LITERAL_START s_char_sequence DQUOTE
506	\| IDENTIFIER EQUAL unary_expression_or_range
507	\| ID_TYPE EQUAL unary_expression_or_range
508	\| keywords EQUAL unary_expression_or_range
509	\| STRING_LITERAL_START DQUOTE EQUAL unary_expression_or_range
510	\| STRING_LITERAL_START s_char_sequence DQUOTE EQUAL unary_expression_or_range
511	;
512
513	abstract_declarator_list:
514	abstract_declarator
515	\| abstract_declarator_list COMMA abstract_declarator
516	;
517
518	abstract_declarator:
519	direct_abstract_declarator
520	\| pointer direct_abstract_declarator
521	;
522
523	direct_abstract_declarator:
524	/* empty */
525	\| IDENTIFIER
526	\| LPAREN abstract_declarator RPAREN
527	\| direct_abstract_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
528	\| direct_abstract_declarator LSBRAC RSBRAC
529	;
530
531	declarator:
532	direct_declarator
533	\| pointer direct_declarator
534	;
535
536	direct_declarator:
537	IDENTIFIER
538	\| LPAREN declarator RPAREN
539	\| direct_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
540	;
541
542	type_declarator:
543	direct_type_declarator
544	\| pointer direct_type_declarator
545	;
546
547	direct_type_declarator:
548	IDENTIFIER
549	{
550	add_type($1->s);
551	}
552	\| LPAREN type_declarator RPAREN
553	\| direct_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
554	;
555
556	abstract_type_declarator:
557	direct_abstract_type_declarator
558	\| pointer direct_abstract_type_declarator
559	;
560
561	direct_abstract_type_declarator:
562	/* empty */
563	\| IDENTIFIER
564	{
565	add_type($1->s);
566	}
567	\| LPAREN abstract_type_declarator RPAREN
568	\| direct_abstract_type_declarator LSBRAC type_specifier_or_integer_constant RSBRAC
569	\| direct_abstract_type_declarator LSBRAC RSBRAC
570	;
571
572	pointer:
573	STAR
574	\| STAR pointer
575	\| STAR type_qualifier_list pointer
576	;
577
578	type_qualifier_list:
579	CONST
580	\| type_qualifier_list CONST
581	;
582
583	/* 2.3: CTF-specific declarations */
584
585	ctf_assignment_expression_list:
586	ctf_assignment_expression SEMICOLON
587	\| ctf_assignment_expression_list ctf_assignment_expression SEMICOLON
588	;
589
590	ctf_assignment_expression:
591	unary_expression EQUAL unary_expression
592	\| unary_expression TYPEASSIGN type_specifier
593	\| declaration_specifiers TYPEDEF declaration_specifiers type_declarator_list
594	\| TYPEDEF declaration_specifiers type_declarator_list
595	\| declaration_specifiers TYPEDEF type_declarator_list
596	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON declaration_specifiers abstract_type_declarator_list
597	\| TYPEALIAS declaration_specifiers abstract_declarator_list COLON type_declarator_list
598	;