Context Navigation

parser.yy@ 1395748

Visit:

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc

Last change on this file since 1395748 was 5809461, checked in by Rob Schluntz <rschlunt@…>, 8 years ago
Fix handling of GCC label address and computed goto
Property mode set to `100644`
File size: 113.1 KB

Line
1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// parser.yy --
8	//
9	// Author : Peter A. Buhr
10	// Created On : Sat Sep 1 20:22:55 2001
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Wed Aug 30 07:04:19 2017
13	// Update Count : 2740
14	//
15
16	// This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C
17	// grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts have been
18	// copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar.
19	// In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax
20	// that must be subsequently rejected by semantic checks. Nevertheless, there are still several semantic checks
21	// required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions.
22
23	// Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with
24	// the grammar.
25
26	// The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for:
27	//
28	// 1. designation with '=' (use ':' instead)
29	//
30	// Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar also has
31	// two levels of extensions. The first extensions cover most of the GCC C extensions, except for:
32	//
33	// 1. designation with and without '=' (use ':' instead)
34	// 2. attributes not allowed in parenthesis of declarator
35	//
36	// All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall
37	// (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the
38	// syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable
39	// parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation"
40	// grammar rule.
41
42	%{
43	#define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time
44	#define YYDEBUG 1 // get the pretty debugging code to compile
45
46	#undef __GNUC_MINOR__
47
48	#include <cstdio>
49	#include <stack>
50	using namespace std;
51
52	#include "ParseNode.h"
53	#include "TypedefTable.h"
54	#include "TypeData.h"
55	#include "LinkageSpec.h"
56	#include "Common/SemanticError.h" // error_str
57
58	extern DeclarationNode * parseTree;
59	extern LinkageSpec::Spec linkage;
60	extern TypedefTable typedefTable;
61
62	stack< LinkageSpec::Spec > linkageStack;
63
64	void appendStr( string to, string from ) {
65	// "abc" "def" "ghi" => "abcdefghi", remove new text from quotes and insert before last quote in old string.
66	to->insert( to->length() - 1, from->substr( 1, from->length() - 2 ) );
67	} // appendStr
68
69	DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) {
70	// distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__.
71	DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier );
72	//cur->addType( specifier );
73	for ( cur = dynamic_cast< DeclarationNode * >( cur->get_next() ); cur != nullptr; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
74	cl->cloneBaseType( cur );
75	} // for
76	declList->addType( cl );
77	// delete cl;
78	return declList;
79	} // distAttr
80
81	void distExt( DeclarationNode * declaration ) {
82	// distribute EXTENSION across all declarations
83	for ( DeclarationNode iter = declaration; iter != nullptr; iter = (DeclarationNode )iter->get_next() ) {
84	iter->set_extension( true );
85	} // for
86	} // distExt
87
88	bool forall = false; // aggregate have one or more forall qualifiers ?
89	%}
90
91	// Types declaration
92	%union
93	{
94	Token tok;
95	ParseNode * pn;
96	ExpressionNode * en;
97	DeclarationNode * decl;
98	DeclarationNode::Aggregate aggKey;
99	DeclarationNode::TypeClass tclass;
100	StatementNode * sn;
101	WaitForStmt * wfs;
102	ConstantExpr * constant;
103	IfCtl * ifctl;
104	ForCtl * fctl;
105	LabelNode * label;
106	InitializerNode * in;
107	OperKinds op;
108	std::string * str;
109	bool flag;
110	CatchStmt::Kind catch_kind;
111	}
112
113	//*********************** TERMINAL TOKENS ******************************
114
115	// keywords
116	%token TYPEDEF
117	%token EXTERN STATIC AUTO REGISTER
118	%token THREADLOCAL // C11
119	%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
120	%token NORETURN // C11
121	%token CONST VOLATILE
122	%token RESTRICT // C99
123	%token ATOMIC // C11
124	%token FORALL MUTEX VIRTUAL // CFA
125	%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
126	%token BOOL COMPLEX IMAGINARY // C99
127	%token ZERO_T ONE_T // CFA
128	%token VALIST // GCC
129	%token TYPEOF LABEL // GCC
130	%token ENUM STRUCT UNION
131	%token COROUTINE MONITOR THREAD // CFA
132	%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
133	%token SIZEOF OFFSETOF
134	%token ATTRIBUTE EXTENSION // GCC
135	%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
136	%token CHOOSE DISABLE ENABLE FALLTHRU TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT WITH WHEN WAITFOR // CFA
137	%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
138	%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
139
140	// names and constants: lexer differentiates between identifier and typedef names
141	%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname
142	%token<tok> TIMEOUT WOR
143	%token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname
144	%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
145	// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
146	// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
147	// converted into the tuple index (.)(1). e.g., 3.x
148	%token<tok> REALDECIMALconstant REALFRACTIONconstant FLOATINGconstant
149
150	// multi-character operators
151	%token ARROW // ->
152	%token ICR DECR // ++ --
153	%token LS RS // << >>
154	%token LE GE EQ NE // <= >= == !=
155	%token ANDAND OROR // && \|\|
156	%token ELLIPSIS // ...
157
158	%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
159	%token PLUSassign MINUSassign // += -=
160	%token LSassign RSassign // <<= >>=
161	%token ANDassign ERassign ORassign // &= ^= \|=
162
163	%token ATassign // @=
164
165	%type<tok> identifier no_attr_identifier
166	%type<tok> identifier_or_type_name no_attr_identifier_or_type_name attr_name
167	%type<tok> quasi_keyword
168	%type<constant> string_literal
169	%type<str> string_literal_list
170
171	// expressions
172	%type<en> constant
173	%type<en> tuple tuple_expression_list
174	%type<op> ptrref_operator unary_operator assignment_operator
175	%type<en> primary_expression postfix_expression unary_expression
176	%type<en> cast_expression exponential_expression multiplicative_expression additive_expression
177	%type<en> shift_expression relational_expression equality_expression
178	%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
179	%type<en> logical_AND_expression logical_OR_expression
180	%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
181	%type<en> comma_expression comma_expression_opt
182	%type<en> argument_expression_list argument_expression default_initialize_opt
183	%type<ifctl> if_control_expression
184	%type<fctl> for_control_expression
185	%type<en> subrange
186	%type<decl> asm_name_opt
187	%type<en> asm_operands_opt asm_operands_list asm_operand
188	%type<label> label_list
189	%type<en> asm_clobbers_list_opt
190	%type<flag> asm_volatile_opt
191	%type<en> handler_predicate_opt
192
193	// statements
194	%type<sn> statement labeled_statement compound_statement
195	%type<sn> statement_decl statement_decl_list statement_list_nodecl
196	%type<sn> selection_statement
197	%type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list
198	%type<en> case_value
199	%type<sn> case_clause case_value_list case_label case_label_list
200	%type<sn> fall_through fall_through_opt
201	%type<sn> iteration_statement jump_statement
202	%type<sn> expression_statement asm_statement
203	%type<sn> with_statement with_clause_opt
204	%type<sn> exception_statement handler_clause finally_clause
205	%type<catch_kind> handler_key
206	%type<en> when_clause when_clause_opt waitfor timeout
207	%type<sn> waitfor_statement
208	%type<wfs> waitfor_clause
209
210	// declarations
211	%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
212	%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
213	%type<decl> abstract_parameter_declaration
214
215	%type<aggKey> aggregate_key
216	%type<decl> aggregate_type aggregate_type_nobody
217
218	%type<decl> assertion assertion_list_opt
219
220	%type<en> bit_subrange_size_opt bit_subrange_size
221
222	%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
223
224	%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
225
226	%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
227	%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
228
229	%type<decl> elaborated_type elaborated_type_nobody
230
231	%type<decl> enumerator_list enum_type enum_type_nobody
232	%type<en> enumerator_value_opt
233
234	%type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt
235
236	%type<decl> field_declaration field_declaration_list field_declarator field_declaring_list
237	%type<en> field field_list field_name fraction_constants
238
239	%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
240
241	%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
242	%type<decl> identifier_list
243
244	%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
245	%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
246	%type<decl> cfa_abstract_ptr cfa_abstract_tuple
247
248	%type<decl> cfa_array_parameter_1st_dimension
249
250	%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list
251	%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
252
253	%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
254	%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
255
256	%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_type_list cfa_parameter_type_list_opt
257
258	%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
259
260	%type<decl> c_declaration
261	%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
262	%type<decl> KR_declaration_list KR_declaration_list_opt
263
264	%type<decl> parameter_declaration parameter_list parameter_type_list
265	%type<decl> parameter_type_list_opt
266
267	%type<decl> paren_identifier paren_type
268
269	%type<decl> storage_class storage_class_list
270
271	%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
272
273	%type<tclass> type_class
274	%type<decl> type_declarator type_declarator_name type_declaring_list
275
276	%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
277	%type<decl> typedef typedef_declaration typedef_expression
278
279	%type<decl> variable_type_redeclarator type_ptr type_array type_function
280
281	%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
282
283	%type<decl> type type_no_function
284	%type<decl> type_parameter type_parameter_list type_initializer_opt
285
286	%type<en> type_list
287
288	%type<decl> type_qualifier type_qualifier_name type_qualifier_list_opt type_qualifier_list
289	%type<decl> type_specifier type_specifier_nobody
290
291	%type<decl> variable_declarator variable_ptr variable_array variable_function
292	%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
293
294	%type<decl> attribute_list_opt attribute_list attribute_name_list attribute attribute_name
295
296	// initializers
297	%type<in> initializer initializer_list initializer_opt
298
299	// designators
300	%type<en> designator designator_list designation
301
302
303	// Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string
304	// is ambiguous:
305	// .---------. matches IF '(' comma_expression ')' statement . (reduce)
306	// if ( C ) S1 else S2
307	// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
308	// Similar issues exit with the waitfor statement.
309
310	// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
311	// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
312	%precedence THEN // rule precedence for IF/WAITFOR statement
313	%precedence WOR // token precedence for start of WOR in WAITFOR statement
314	%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
315	%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
316
317	%start translation_unit // parse-tree root
318
319	%%
320	//*********************** Namespace Management ******************************
321
322	// The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols
323	// "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free
324	// grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this
325	// grammar uses the ANSI style.
326	//
327	// Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those
328	// introduced through "forall" qualifiers), and by introducing "type generators" -- parameterized types. This latter
329	// type name creates a third class of identifiers that must be distinguished by the scanner.
330	//
331	// Since the scanner cannot distinguish among the different classes of identifiers without some context information, it
332	// accesses a data structure (TypedefTable) to allow classification of an identifier that it has just read. Semantic
333	// actions during the parser update this data structure when the class of identifiers change.
334	//
335	// Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a
336	// local scope; it must revert to its original class at the end of the block. Since type names can be local to a
337	// particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are
338	// local to the current declaration scope and those that persist past the end of the declaration (i.e., names defined in
339	// "typedef" or "otype" declarations).
340	//
341	// The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and closing of
342	// scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur
343	// within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point
344	// of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have
345	// enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra
346	// rules is to open a new scope unconditionally. As the grammar evolves, it may be neccesary to add or move around
347	// "push" and "pop" nonterminals to resolve conflicts of this sort.
348
349	push:
350	{ typedefTable.enterScope(); }
351	;
352
353	pop:
354	{ typedefTable.leaveScope(); }
355	;
356
357	//*********************** CONSTANTS ******************************
358
359	constant:
360	// ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
361	INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
362	\| REALDECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
363	\| REALFRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
364	\| FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
365	\| CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
366	;
367
368	quasi_keyword: // CFA
369	TIMEOUT
370	\| WOR
371	;
372
373	identifier:
374	IDENTIFIER
375	\| ATTR_IDENTIFIER // CFA
376	\| quasi_keyword
377	;
378
379	no_attr_identifier:
380	IDENTIFIER
381	\| quasi_keyword
382	;
383
384	string_literal:
385	string_literal_list { $$ = build_constantStr( *$1 ); }
386	;
387
388	string_literal_list: // juxtaposed strings are concatenated
389	STRINGliteral { $$ = $1; } // conversion from tok to str
390	\| string_literal_list STRINGliteral
391	{
392	appendStr( $1, $2 ); // append 2nd juxtaposed string to 1st
393	delete $2; // allocated by lexer
394	$$ = $1; // conversion from tok to str
395	}
396	;
397
398	//*********************** EXPRESSIONS ******************************
399
400	primary_expression:
401	IDENTIFIER // typedef name cannot be used as a variable name
402	{ $$ = new ExpressionNode( build_varref( $1 ) ); }
403	\| quasi_keyword
404	{ $$ = new ExpressionNode( build_varref( $1 ) ); }
405	\| tuple
406	\| '(' comma_expression ')'
407	{ $$ = $2; }
408	\| '(' compound_statement ')' // GCC, lambda expression
409	{ $$ = new ExpressionNode( build_valexpr( $2 ) ); }
410	\| primary_expression '{' argument_expression_list '}' // CFA, constructor call
411	{
412	Token fn;
413	fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
414	$$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
415	}
416	\| type_name '.' no_attr_identifier // CFA, nested type
417	{ $$ = nullptr; } // FIX ME
418	\| type_name '.' '[' push field_list pop ']' // CFA, nested type / tuple field selector
419	{ $$ = nullptr; } // FIX ME
420	;
421
422	postfix_expression:
423	primary_expression
424	\| postfix_expression '[' push assignment_expression pop ']'
425	// CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
426	// matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
427	// little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
428	// equivalent to the old x[i,j].
429	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $4 ) ); }
430	\| postfix_expression '(' argument_expression_list ')'
431	{ $$ = new ExpressionNode( build_func( $1, $3 ) ); }
432	\| postfix_expression '.' no_attr_identifier
433	{ $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
434	\| postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector
435	{ $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $5 ) ) ); }
436	\| postfix_expression REALFRACTIONconstant // CFA, tuple index
437	{ $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_REALFRACTIONconstant( *$2 ) ) ); }
438	\| postfix_expression ARROW no_attr_identifier
439	{
440	$$ = new ExpressionNode( build_pfieldSel( $1, $3 == "0" \|\| $3 == "1" ? build_constantInteger( *$3 ) : build_varref( $3 ) ) );
441	}
442	\| postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector
443	{ $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $5 ) ) ); }
444	\| postfix_expression ARROW INTEGERconstant // CFA, tuple index
445	{ $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
446	\| postfix_expression ICR
447	{ $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
448	\| postfix_expression DECR
449	{ $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
450	\| '(' type_no_function ')' '{' initializer_list comma_opt '}' // C99, compound-literal
451	{ $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
452	\| '^' primary_expression '{' argument_expression_list '}' // CFA
453	{
454	Token fn;
455	fn.str = new string( "^?{}" ); // location undefined
456	$$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
457	}
458	;
459
460	argument_expression_list:
461	argument_expression
462	\| argument_expression_list ',' argument_expression
463	{ $$ = (ExpressionNode *)( $1->set_last( $3 )); }
464	;
465
466	argument_expression:
467	// empty
468	{ $$ = nullptr; }
469	// \| '@' // use default argument
470	// { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
471	\| assignment_expression
472	;
473
474	field_list: // CFA, tuple field selector
475	field
476	\| field_list ',' field { $$ = (ExpressionNode *)$1->set_last( $3 ); }
477	;
478
479	field: // CFA, tuple field selector
480	field_name
481	\| REALDECIMALconstant field
482	{ $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_REALDECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
483	\| REALDECIMALconstant '[' push field_list pop ']'
484	{ $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_REALDECIMALconstant( *$1 ) ), build_tuple( $4 ) ) ); }
485	\| field_name '.' field
486	{ $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
487	\| field_name '.' '[' push field_list pop ']'
488	{ $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $5 ) ) ); }
489	\| field_name ARROW field
490	{ $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
491	\| field_name ARROW '[' push field_list pop ']'
492	{ $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $5 ) ) ); }
493	;
494
495	field_name:
496	INTEGERconstant fraction_constants
497	{ $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
498	\| FLOATINGconstant fraction_constants
499	{ $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
500	\| no_attr_identifier fraction_constants
501	{
502	$$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
503	}
504	;
505
506	fraction_constants:
507	// empty
508	{ $$ = nullptr; }
509	\| fraction_constants REALFRACTIONconstant
510	{
511	Expression * constant = build_field_name_REALFRACTIONconstant( *$2 );
512	$$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
513	}
514	;
515
516	unary_expression:
517	postfix_expression
518	// first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
519	// semantics checks, e.g., ++3, 3--, *3, &&3
520	\| constant
521	{ $$ = $1; }
522	\| string_literal
523	{ $$ = new ExpressionNode( $1 ); }
524	\| EXTENSION cast_expression // GCC
525	{ $$ = $2->set_extension( true ); }
526	// '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
527	// { * X; } // dereference X
528	// { * int X; } // CFA declaration of pointer to int
529	\| ptrref_operator cast_expression // CFA
530	{
531	switch ( $1 ) {
532	case OperKinds::AddressOf:
533	$$ = new ExpressionNode( build_addressOf( $2 ) );
534	break;
535	case OperKinds::PointTo:
536	$$ = new ExpressionNode( build_unary_val( $1, $2 ) );
537	break;
538	case OperKinds::And:
539	$$ = new ExpressionNode( new AddressExpr( build_addressOf( $2 ) ) );
540	break;
541	default:
542	assert( false );
543	}
544	}
545	\| unary_operator cast_expression
546	{ $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
547	\| ICR unary_expression
548	{ $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
549	\| DECR unary_expression
550	{ $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
551	\| SIZEOF unary_expression
552	{ $$ = new ExpressionNode( build_sizeOfexpr( $2 ) ); }
553	\| SIZEOF '(' type_no_function ')'
554	{ $$ = new ExpressionNode( build_sizeOftype( $3 ) ); }
555	\| ALIGNOF unary_expression // GCC, variable alignment
556	{ $$ = new ExpressionNode( build_alignOfexpr( $2 ) ); }
557	\| ALIGNOF '(' type_no_function ')' // GCC, type alignment
558	{ $$ = new ExpressionNode( build_alignOftype( $3 ) ); }
559	\| OFFSETOF '(' type_no_function ',' no_attr_identifier ')'
560	{ $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
561	\| ATTR_IDENTIFIER
562	{ $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), nullptr ) ); }
563	\| ATTR_IDENTIFIER '(' argument_expression ')'
564	{ $$ = new ExpressionNode( build_attrexpr( build_varref( $1 ), $3 ) ); }
565	\| ATTR_IDENTIFIER '(' type ')'
566	{ $$ = new ExpressionNode( build_attrtype( build_varref( $1 ), $3 ) ); }
567	;
568
569	ptrref_operator:
570	'*' { $$ = OperKinds::PointTo; }
571	\| '&' { $$ = OperKinds::AddressOf; }
572	// GCC, address of label must be handled by semantic check for ref,ref,label
573	\| ANDAND { $$ = OperKinds::And; }
574	;
575
576	unary_operator:
577	'+' { $$ = OperKinds::UnPlus; }
578	\| '-' { $$ = OperKinds::UnMinus; }
579	\| '!' { $$ = OperKinds::Neg; }
580	\| '~' { $$ = OperKinds::BitNeg; }
581	;
582
583	cast_expression:
584	unary_expression
585	\| '(' type_no_function ')' cast_expression
586	{ $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
587	// VIRTUAL cannot be opt because of look ahead issues
588	\| '(' VIRTUAL ')' cast_expression
589	{ $$ = new ExpressionNode( build_virtual_cast( nullptr, $4 ) ); }
590	\| '(' VIRTUAL type_no_function ')' cast_expression
591	{ $$ = new ExpressionNode( build_virtual_cast( $3, $5 ) ); }
592	// \| '(' type_no_function ')' tuple
593	// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
594	;
595
596	exponential_expression:
597	cast_expression
598	\| exponential_expression '\\' cast_expression
599	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
600	;
601
602	multiplicative_expression:
603	exponential_expression
604	\| multiplicative_expression '*' exponential_expression
605	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
606	\| multiplicative_expression '/' exponential_expression
607	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
608	\| multiplicative_expression '%' exponential_expression
609	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
610	;
611
612	additive_expression:
613	multiplicative_expression
614	\| additive_expression '+' multiplicative_expression
615	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
616	\| additive_expression '-' multiplicative_expression
617	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
618	;
619
620	shift_expression:
621	additive_expression
622	\| shift_expression LS additive_expression
623	{ $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
624	\| shift_expression RS additive_expression
625	{ $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
626	;
627
628	relational_expression:
629	shift_expression
630	\| relational_expression '<' shift_expression
631	{ $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
632	\| relational_expression '>' shift_expression
633	{ $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
634	\| relational_expression LE shift_expression
635	{ $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
636	\| relational_expression GE shift_expression
637	{ $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
638	;
639
640	equality_expression:
641	relational_expression
642	\| equality_expression EQ relational_expression
643	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
644	\| equality_expression NE relational_expression
645	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
646	;
647
648	AND_expression:
649	equality_expression
650	\| AND_expression '&' equality_expression
651	{ $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
652	;
653
654	exclusive_OR_expression:
655	AND_expression
656	\| exclusive_OR_expression '^' AND_expression
657	{ $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
658	;
659
660	inclusive_OR_expression:
661	exclusive_OR_expression
662	\| inclusive_OR_expression '\|' exclusive_OR_expression
663	{ $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
664	;
665
666	logical_AND_expression:
667	inclusive_OR_expression
668	\| logical_AND_expression ANDAND inclusive_OR_expression
669	{ $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
670	;
671
672	logical_OR_expression:
673	logical_AND_expression
674	\| logical_OR_expression OROR logical_AND_expression
675	{ $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
676	;
677
678	conditional_expression:
679	logical_OR_expression
680	\| logical_OR_expression '?' comma_expression ':' conditional_expression
681	{ $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
682	// FIX ME: this hack computes $1 twice
683	\| logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
684	{ $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
685	;
686
687	constant_expression:
688	conditional_expression
689	;
690
691	assignment_expression:
692	// CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
693	conditional_expression
694	\| unary_expression assignment_operator assignment_expression
695	{ $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) ); }
696	;
697
698	assignment_expression_opt:
699	// empty
700	{ $$ = nullptr; }
701	\| assignment_expression
702	;
703
704	assignment_operator:
705	'=' { $$ = OperKinds::Assign; }
706	\| ATassign { $$ = OperKinds::AtAssn; }
707	\| EXPassign { $$ = OperKinds::ExpAssn; }
708	\| MULTassign { $$ = OperKinds::MulAssn; }
709	\| DIVassign { $$ = OperKinds::DivAssn; }
710	\| MODassign { $$ = OperKinds::ModAssn; }
711	\| PLUSassign { $$ = OperKinds::PlusAssn; }
712	\| MINUSassign { $$ = OperKinds::MinusAssn; }
713	\| LSassign { $$ = OperKinds::LSAssn; }
714	\| RSassign { $$ = OperKinds::RSAssn; }
715	\| ANDassign { $$ = OperKinds::AndAssn; }
716	\| ERassign { $$ = OperKinds::ERAssn; }
717	\| ORassign { $$ = OperKinds::OrAssn; }
718	;
719
720	tuple: // CFA, tuple
721	// CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
722	// comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
723	// '[' ']'
724	// { $$ = new ExpressionNode( build_tuple() ); }
725	// '[' push assignment_expression pop ']'
726	// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
727	'[' push ',' tuple_expression_list pop ']'
728	{ $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $4 ) ) ); }
729	\| '[' push assignment_expression ',' tuple_expression_list pop ']'
730	{ $$ = new ExpressionNode( build_tuple( (ExpressionNode *)$3->set_last( $5 ) ) ); }
731	;
732
733	tuple_expression_list:
734	assignment_expression_opt
735	\| tuple_expression_list ',' assignment_expression_opt
736	{ $$ = (ExpressionNode *)$1->set_last( $3 ); }
737	;
738
739	comma_expression:
740	assignment_expression
741	\| comma_expression ',' assignment_expression
742	{ $$ = new ExpressionNode( build_comma( $1, $3 ) ); }
743	;
744
745	comma_expression_opt:
746	// empty
747	{ $$ = nullptr; }
748	\| comma_expression
749	;
750
751	//************************* STATEMENTS *****************************
752
753	statement:
754	labeled_statement
755	\| compound_statement
756	\| expression_statement { $$ = $1; }
757	\| selection_statement
758	\| iteration_statement
759	\| jump_statement
760	\| with_statement
761	\| waitfor_statement
762	\| exception_statement
763	\| asm_statement
764
765	labeled_statement:
766	// labels cannot be identifiers 0 or 1 or ATTR_IDENTIFIER
767	identifier_or_type_name ':' attribute_list_opt statement
768	{
769	$$ = $4->add_label( $1, $3 );
770	}
771	;
772
773	compound_statement:
774	'{' '}'
775	{ $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
776	\| '{'
777	// Two scopes are necessary because the block itself has a scope, but every declaration within the block also
778	// requires its own scope.
779	push push
780	local_label_declaration_opt // GCC, local labels
781	statement_decl_list // C99, intermix declarations and statements
782	pop '}'
783	{ $$ = new StatementNode( build_compound( $5 ) ); }
784	;
785
786	statement_decl_list: // C99
787	statement_decl
788	\| statement_decl_list push statement_decl
789	{ if ( $1 != 0 ) { $1->set_last( $3 ); $$ = $1; } }
790	;
791
792	statement_decl:
793	declaration // CFA, new & old style declarations
794	{ $$ = new StatementNode( $1 ); }
795	\| EXTENSION declaration // GCC
796	{
797	distExt( $2 );
798	$$ = new StatementNode( $2 );
799	}
800	\| function_definition
801	{ $$ = new StatementNode( $1 ); }
802	\| EXTENSION function_definition // GCC
803	{
804	distExt( $2 );
805	$$ = new StatementNode( $2 );
806	}
807	\| statement pop
808	;
809
810	statement_list_nodecl:
811	statement
812	\| statement_list_nodecl statement
813	{ if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } }
814	;
815
816	expression_statement:
817	comma_expression_opt ';'
818	{ $$ = new StatementNode( build_expr( $1 ) ); }
819	;
820
821	selection_statement:
822	IF '(' push if_control_expression ')' statement %prec THEN
823	// explicitly deal with the shift/reduce conflict on if/else
824	{ $$ = new StatementNode( build_if( $4, $6, nullptr ) ); }
825	\| IF '(' push if_control_expression ')' statement ELSE statement
826	{ $$ = new StatementNode( build_if( $4, $6, $8 ) ); }
827	\| SWITCH '(' comma_expression ')' case_clause
828	{ $$ = new StatementNode( build_switch( $3, $5 ) ); }
829	\| SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA
830	{
831	StatementNode *sw = new StatementNode( build_switch( $3, $8 ) );
832	// The semantics of the declaration list is changed to include associated initialization, which is performed
833	// before the transfer to the appropriate case clause by hoisting the declarations into a compound
834	// statement around the switch. Statements after the initial declaration list can never be executed, and
835	// therefore, are removed from the grammar even though C allows it. The change also applies to choose
836	// statement.
837	$$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
838	}
839	\| CHOOSE '(' comma_expression ')' case_clause // CFA
840	{ $$ = new StatementNode( build_switch( $3, $5 ) ); }
841	\| CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA
842	{
843	StatementNode *sw = new StatementNode( build_switch( $3, $8 ) );
844	$$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
845	}
846	;
847
848	if_control_expression:
849	comma_expression pop
850	{ $$ = new IfCtl( nullptr, $1 ); }
851	\| c_declaration pop // no semi-colon
852	{ $$ = new IfCtl( $1, nullptr ); }
853	\| cfa_declaration pop // no semi-colon
854	{ $$ = new IfCtl( $1, nullptr ); }
855	\| declaration comma_expression // semi-colon separated
856	{ $$ = new IfCtl( $1, $2 ); }
857	;
858
859	// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
860	// clause allows a list of values and subranges.
861
862	case_value: // CFA
863	constant_expression { $$ = $1; }
864	\| constant_expression ELLIPSIS constant_expression // GCC, subrange
865	{ $$ = new ExpressionNode( build_range( $1, $3 ) ); }
866	\| subrange // CFA, subrange
867	;
868
869	case_value_list: // CFA
870	case_value { $$ = new StatementNode( build_case( $1 ) ); }
871	// convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
872	\| case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
873	;
874
875	case_label: // CFA
876	CASE case_value_list ':' { $$ = $2; }
877	\| DEFAULT ':' { $$ = new StatementNode( build_default() ); }
878	// A semantic check is required to ensure only one default clause per switch/choose statement.
879	;
880
881	case_label_list: // CFA
882	case_label
883	\| case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
884	;
885
886	case_clause: // CFA
887	case_label_list statement { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
888	;
889
890	switch_clause_list_opt: // CFA
891	// empty
892	{ $$ = nullptr; }
893	\| switch_clause_list
894	;
895
896	switch_clause_list: // CFA
897	case_label_list statement_list_nodecl
898	{ $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
899	\| switch_clause_list case_label_list statement_list_nodecl
900	{ $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
901	;
902
903	choose_clause_list_opt: // CFA
904	// empty
905	{ $$ = nullptr; }
906	\| choose_clause_list
907	;
908
909	choose_clause_list: // CFA
910	case_label_list fall_through
911	{ $$ = $1->append_last_case( $2 ); }
912	\| case_label_list statement_list_nodecl fall_through_opt
913	{ $$ = $1->append_last_case( new StatementNode( build_compound( (StatementNode *)$2->set_last( $3 ) ) ) ); }
914	\| choose_clause_list case_label_list fall_through
915	{ $$ = (StatementNode *)( $1->set_last( $2->append_last_case( $3 ))); }
916	\| choose_clause_list case_label_list statement_list_nodecl fall_through_opt
917	{ $$ = (StatementNode )( $1->set_last( $2->append_last_case( new StatementNode( build_compound( (StatementNode )$3->set_last( $4 ) ) ) ) ) ); }
918	;
919
920	fall_through_opt: // CFA
921	// empty
922	{ $$ = new StatementNode( build_branch( BranchStmt::Break ) ); } // insert implicit break
923	\| fall_through
924	;
925
926	fall_through: // CFA
927	FALLTHRU
928	{ $$ = nullptr; }
929	\| FALLTHRU ';'
930	{ $$ = nullptr; }
931	;
932
933	iteration_statement:
934	WHILE '(' comma_expression ')' statement
935	{ $$ = new StatementNode( build_while( $3, $5 ) ); }
936	\| DO statement WHILE '(' comma_expression ')' ';'
937	{ $$ = new StatementNode( build_while( $5, $2, true ) ); }
938	\| FOR '(' push for_control_expression ')' statement
939	{ $$ = new StatementNode( build_for( $4, $6 ) ); }
940	;
941
942	for_control_expression:
943	comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt
944	{ $$ = new ForCtl( $1, $4, $6 ); }
945	\| declaration comma_expression_opt ';' comma_expression_opt // C99
946	{ $$ = new ForCtl( $1, $2, $4 ); }
947	;
948
949	jump_statement:
950	GOTO identifier_or_type_name ';'
951	{ $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
952	\| GOTO '*' comma_expression ';' // GCC, computed goto
953	// The syntax for the GCC computed goto violates normal expression precedence, e.g., goto i+3; => goto (i+3);
954	// whereas normal operator precedence yields goto (*i)+3;
955	{ $$ = new StatementNode( build_computedgoto( $3 ) ); }
956	\| CONTINUE ';'
957	// A semantic check is required to ensure this statement appears only in the body of an iteration statement.
958	{ $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
959	\| CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
960	// A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
961	// the target of the transfer appears only at the start of an iteration statement.
962	{ $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
963	\| BREAK ';'
964	// A semantic check is required to ensure this statement appears only in the body of an iteration statement.
965	{ $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
966	\| BREAK identifier_or_type_name ';' // CFA, multi-level exit
967	// A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
968	// the target of the transfer appears only at the start of an iteration statement.
969	{ $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
970	\| RETURN comma_expression_opt ';'
971	{ $$ = new StatementNode( build_return( $2 ) ); }
972	\| THROW assignment_expression_opt ';' // handles rethrow
973	{ $$ = new StatementNode( build_throw( $2 ) ); }
974	\| THROWRESUME assignment_expression_opt ';' // handles reresume
975	{ $$ = new StatementNode( build_resume( $2 ) ); }
976	\| THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
977	{ $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
978	;
979
980	with_statement:
981	WITH '(' tuple_expression_list ')' statement
982	{ $$ = nullptr; } // FIX ME
983	;
984
985	when_clause:
986	WHEN '(' comma_expression ')'
987	{ $$ = $3; }
988	;
989
990	when_clause_opt:
991	// empty
992	{ $$ = nullptr; }
993	\| when_clause
994	;
995
996	waitfor:
997	WAITFOR '(' identifier ')'
998	{
999	$$ = new ExpressionNode( new NameExpr( *$3 ) );
1000	delete $3;
1001	}
1002	\| WAITFOR '(' identifier ',' argument_expression_list ')'
1003	{
1004	$$ = new ExpressionNode( new NameExpr( *$3 ) );
1005	$$->set_last( $5 );
1006	delete $3;
1007	}
1008	;
1009
1010	timeout:
1011	TIMEOUT '(' comma_expression ')'
1012	{ $$ = $3; }
1013	;
1014
1015	waitfor_clause:
1016	when_clause_opt waitfor statement %prec THEN
1017	{ $$ = build_waitfor( $2, $3, $1 ); }
1018	\| when_clause_opt waitfor statement WOR waitfor_clause
1019	{ $$ = build_waitfor( $2, $3, $1, $5 ); }
1020	\| when_clause_opt timeout statement %prec THEN
1021	{ $$ = build_waitfor_timeout( $2, $3, $1 ); }
1022	\| when_clause_opt ELSE statement
1023	{ $$ = build_waitfor_timeout( nullptr, $3, $1 ); }
1024	// "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
1025	\| when_clause_opt timeout statement WOR when_clause ELSE statement
1026	{ $$ = build_waitfor_timeout( $2, $3, $1, $7, $5 ); }
1027	;
1028
1029	waitfor_statement:
1030	when_clause_opt waitfor statement %prec THEN
1031	{ $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
1032	\| when_clause_opt waitfor statement WOR waitfor_clause
1033	{ $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
1034	;
1035
1036	exception_statement:
1037	TRY compound_statement handler_clause
1038	{ $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
1039	\| TRY compound_statement finally_clause
1040	{ $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
1041	\| TRY compound_statement handler_clause finally_clause
1042	{ $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
1043	;
1044
1045	handler_clause:
1046	handler_key '(' push push exception_declaration pop handler_predicate_opt ')' compound_statement pop
1047	{ $$ = new StatementNode( build_catch( $1, $5, $7, $9 ) ); }
1048	\| handler_clause handler_key '(' push push exception_declaration pop handler_predicate_opt ')' compound_statement pop
1049	{ $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $6, $8, $10 ) ) ); }
1050	;
1051
1052	handler_predicate_opt:
1053	//empty
1054	{ $$ = nullptr; }
1055	\| ';' conditional_expression
1056	{ $$ = $2; }
1057	;
1058
1059	handler_key:
1060	CATCH
1061	{ $$ = CatchStmt::Terminate; }
1062	\| CATCHRESUME
1063	{ $$ = CatchStmt::Resume; }
1064	;
1065
1066	finally_clause:
1067	FINALLY compound_statement
1068	{
1069	$$ = new StatementNode( build_finally( $2 ) );
1070	}
1071	;
1072
1073	exception_declaration:
1074	// No SUE declaration in parameter list.
1075	type_specifier_nobody
1076	\| type_specifier_nobody declarator
1077	{
1078	typedefTable.addToEnclosingScope( TypedefTable::ID );
1079	$$ = $2->addType( $1 );
1080	}
1081	\| type_specifier_nobody variable_abstract_declarator
1082	{ $$ = $2->addType( $1 ); }
1083	\| cfa_abstract_declarator_tuple no_attr_identifier // CFA
1084	{
1085	typedefTable.addToEnclosingScope( TypedefTable::ID );
1086	$$ = $1->addName( $2 );
1087	}
1088	\| cfa_abstract_declarator_tuple // CFA
1089	;
1090
1091	asm_statement:
1092	ASM asm_volatile_opt '(' string_literal ')' ';'
1093	{ $$ = new StatementNode( build_asmstmt( $2, $4, 0 ) ); }
1094	\| ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
1095	{ $$ = new StatementNode( build_asmstmt( $2, $4, $6 ) ); }
1096	\| ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
1097	{ $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8 ) ); }
1098	\| ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
1099	{ $$ = new StatementNode( build_asmstmt( $2, $4, $6, $8, $10 ) ); }
1100	\| ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
1101	{ $$ = new StatementNode( build_asmstmt( $2, $5, 0, $8, $10, $12 ) ); }
1102	;
1103
1104	asm_volatile_opt: // GCC
1105	// empty
1106	{ $$ = false; }
1107	\| VOLATILE
1108	{ $$ = true; }
1109	;
1110
1111	asm_operands_opt: // GCC
1112	// empty
1113	{ $$ = nullptr; } // use default argument
1114	\| asm_operands_list
1115	;
1116
1117	asm_operands_list: // GCC
1118	asm_operand
1119	\| asm_operands_list ',' asm_operand
1120	{ $$ = (ExpressionNode *)$1->set_last( $3 ); }
1121	;
1122
1123	asm_operand: // GCC
1124	string_literal '(' constant_expression ')'
1125	{ $$ = new ExpressionNode( build_asmexpr( 0, $1, $3 ) ); }
1126	\| '[' constant_expression ']' string_literal '(' constant_expression ')'
1127	{ $$ = new ExpressionNode( build_asmexpr( $2, $4, $6 ) ); }
1128	;
1129
1130	asm_clobbers_list_opt: // GCC
1131	// empty
1132	{ $$ = nullptr; } // use default argument
1133	\| string_literal
1134	{ $$ = new ExpressionNode( $1 ); }
1135	\| asm_clobbers_list_opt ',' string_literal
1136	// set_last return ParseNode *
1137	{ $$ = (ExpressionNode *)$1->set_last( new ExpressionNode( $3 ) ); }
1138	;
1139
1140	label_list:
1141	no_attr_identifier
1142	{
1143	$$ = new LabelNode(); $$->labels.push_back( *$1 );
1144	delete $1; // allocated by lexer
1145	}
1146	\| label_list ',' no_attr_identifier
1147	{
1148	$$ = $1; $1->labels.push_back( *$3 );
1149	delete $3; // allocated by lexer
1150	}
1151	;
1152
1153	//***************************** DECLARATIONS *******************************
1154
1155	declaration_list_opt: // used at beginning of switch statement
1156	pop
1157	{ $$ = nullptr; }
1158	\| declaration_list
1159	;
1160
1161	declaration_list:
1162	declaration
1163	\| declaration_list push declaration
1164	{ $$ = $1->appendList( $3 ); }
1165	;
1166
1167	KR_declaration_list_opt: // used to declare parameter types in K&R style functions
1168	// empty
1169	{ $$ = nullptr; }
1170	\| KR_declaration_list
1171	;
1172
1173	KR_declaration_list:
1174	push c_declaration pop ';'
1175	{ $$ = $2; }
1176	\| KR_declaration_list push c_declaration pop ';'
1177	{ $$ = $1->appendList( $3 ); }
1178	;
1179
1180	local_label_declaration_opt: // GCC, local label
1181	// empty
1182	\| local_label_declaration_list
1183	;
1184
1185	local_label_declaration_list: // GCC, local label
1186	LABEL local_label_list ';'
1187	\| local_label_declaration_list LABEL local_label_list ';'
1188	;
1189
1190	local_label_list: // GCC, local label
1191	no_attr_identifier_or_type_name {}
1192	\| local_label_list ',' no_attr_identifier_or_type_name {}
1193	;
1194
1195	declaration: // old & new style declarations
1196	c_declaration pop ';'
1197	\| cfa_declaration pop ';' // CFA
1198	;
1199
1200	// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1201	// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1202	// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1203	// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1204	// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1205	// block, but cannot be mixed within a specific declaration.
1206	//
1207	// CFA C
1208	// [10] int x; int x[10]; // array of 10 integers
1209	// [10] * char y; char *y[10]; // array of 10 pointers to char
1210
1211	cfa_declaration: // CFA
1212	cfa_variable_declaration
1213	\| cfa_typedef_declaration
1214	\| cfa_function_declaration
1215	\| type_declaring_list
1216	\| trait_specifier
1217	;
1218
1219	cfa_variable_declaration: // CFA
1220	cfa_variable_specifier initializer_opt
1221	{
1222	typedefTable.addToEnclosingScope( TypedefTable::ID );
1223	$$ = $1->addInitializer( $2 );
1224	}
1225	\| declaration_qualifier_list cfa_variable_specifier initializer_opt
1226	// declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1227	// them as a type_qualifier cannot appear in that context.
1228	{
1229	typedefTable.addToEnclosingScope( TypedefTable::ID );
1230	$$ = $2->addQualifiers( $1 )->addInitializer( $3 );;
1231	}
1232	\| cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
1233	{
1234	typedefTable.addToEnclosingScope( *$5, TypedefTable::ID );
1235	$$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) );
1236	}
1237	;
1238
1239	cfa_variable_specifier: // CFA
1240	// A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1241	// storage-class
1242	cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
1243	{
1244	typedefTable.setNextIdentifier( *$2 );
1245	$$ = $1->addName( $2 )->addAsmName( $3 );
1246	}
1247	\| cfa_abstract_tuple identifier_or_type_name asm_name_opt
1248	{
1249	typedefTable.setNextIdentifier( *$2 );
1250	$$ = $1->addName( $2 )->addAsmName( $3 );
1251	}
1252	\| type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
1253	{
1254	typedefTable.setNextIdentifier( *$3 );
1255	$$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 );
1256	}
1257	;
1258
1259	cfa_function_declaration: // CFA
1260	cfa_function_specifier
1261	{
1262	typedefTable.addToEnclosingScope( TypedefTable::ID );
1263	$$ = $1;
1264	}
1265	\| type_qualifier_list cfa_function_specifier
1266	{
1267	typedefTable.addToEnclosingScope( TypedefTable::ID );
1268	$$ = $2->addQualifiers( $1 );
1269	}
1270	\| declaration_qualifier_list cfa_function_specifier
1271	{
1272	typedefTable.addToEnclosingScope( TypedefTable::ID );
1273	$$ = $2->addQualifiers( $1 );
1274	}
1275	\| declaration_qualifier_list type_qualifier_list cfa_function_specifier
1276	{
1277	typedefTable.addToEnclosingScope( TypedefTable::ID );
1278	$$ = $3->addQualifiers( $1 )->addQualifiers( $2 );
1279	}
1280	\| cfa_function_declaration pop ',' push identifier_or_type_name
1281	{
1282	typedefTable.addToEnclosingScope( *$5, TypedefTable::ID );
1283	$$ = $1->appendList( $1->cloneType( $5 ) );
1284	}
1285	;
1286
1287	cfa_function_specifier: // CFA
1288	// '[' ']' identifier_or_type_name '(' push cfa_parameter_type_list_opt pop ')' // S/R conflict
1289	// {
1290	// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1291	// }
1292	// '[' ']' identifier '(' push cfa_parameter_type_list_opt pop ')'
1293	// {
1294	// typedefTable.setNextIdentifier( *$5 );
1295	// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1296	// }
1297	// \| '[' ']' TYPEDEFname '(' push cfa_parameter_type_list_opt pop ')'
1298	// {
1299	// typedefTable.setNextIdentifier( *$5 );
1300	// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1301	// }
1302	// \| '[' ']' typegen_name
1303	// identifier_or_type_name must be broken apart because of the sequence:
1304	//
1305	// '[' ']' identifier_or_type_name '(' cfa_parameter_type_list_opt ')'
1306	// '[' ']' type_specifier
1307	//
1308	// type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1309	// flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
1310	cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_type_list_opt pop ')'
1311	// To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
1312	{
1313	$$ = DeclarationNode::newFunction( $2, $1, $5, 0, true );
1314	}
1315	\| cfa_function_return identifier_or_type_name '(' push cfa_parameter_type_list_opt pop ')'
1316	{
1317	$$ = DeclarationNode::newFunction( $2, $1, $5, 0, true );
1318	}
1319	;
1320
1321	cfa_function_return: // CFA
1322	'[' push cfa_parameter_list pop ']'
1323	{ $$ = DeclarationNode::newTuple( $3 ); }
1324	\| '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
1325	// To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the
1326	// ']'.
1327	{ $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
1328	;
1329
1330	cfa_typedef_declaration: // CFA
1331	TYPEDEF cfa_variable_specifier
1332	{
1333	typedefTable.addToEnclosingScope( TypedefTable::TD );
1334	$$ = $2->addTypedef();
1335	}
1336	\| TYPEDEF cfa_function_specifier
1337	{
1338	typedefTable.addToEnclosingScope( TypedefTable::TD );
1339	$$ = $2->addTypedef();
1340	}
1341	\| cfa_typedef_declaration pop ',' push no_attr_identifier
1342	{
1343	typedefTable.addToEnclosingScope( *$5, TypedefTable::TD );
1344	$$ = $1->appendList( $1->cloneType( $5 ) );
1345	}
1346	;
1347
1348	// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1349	// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
1350
1351	typedef_declaration:
1352	TYPEDEF type_specifier declarator
1353	{
1354	typedefTable.addToEnclosingScope( TypedefTable::TD );
1355	$$ = $3->addType( $2 )->addTypedef();
1356	}
1357	\| typedef_declaration pop ',' push declarator
1358	{
1359	typedefTable.addToEnclosingScope( TypedefTable::TD );
1360	$$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1361	}
1362	\| type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
1363	{
1364	typedefTable.addToEnclosingScope( TypedefTable::TD );
1365	$$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1366	}
1367	\| type_specifier TYPEDEF declarator
1368	{
1369	typedefTable.addToEnclosingScope( TypedefTable::TD );
1370	$$ = $3->addType( $1 )->addTypedef();
1371	}
1372	\| type_specifier TYPEDEF type_qualifier_list declarator
1373	{
1374	typedefTable.addToEnclosingScope( TypedefTable::TD );
1375	$$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
1376	}
1377	;
1378
1379	typedef_expression:
1380	// GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
1381	TYPEDEF no_attr_identifier '=' assignment_expression
1382	{
1383	typedefTable.addToEnclosingScope( *$2, TypedefTable::TD );
1384	$$ = DeclarationNode::newName( 0 ); // unimplemented
1385	}
1386	\| typedef_expression pop ',' push no_attr_identifier '=' assignment_expression
1387	{
1388	typedefTable.addToEnclosingScope( *$5, TypedefTable::TD );
1389	$$ = DeclarationNode::newName( 0 ); // unimplemented
1390	}
1391	;
1392
1393	//c_declaration:
1394	// declaring_list pop ';'
1395	// \| typedef_declaration pop ';'
1396	// \| typedef_expression pop ';' // GCC, naming expression type
1397	// \| sue_declaration_specifier pop ';'
1398	// ;
1399	//
1400	//declaring_list:
1401	// // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1402	// // storage-class
1403	// declarator asm_name_opt initializer_opt
1404	// {
1405	// typedefTable.addToEnclosingScope( TypedefTable::ID );
1406	// $$ = ( $2->addType( $1 ))->addAsmName( $3 )->addInitializer( $4 );
1407	// }
1408	// \| declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
1409	// {
1410	// typedefTable.addToEnclosingScope( TypedefTable::ID );
1411	// $$ = $1->appendList( $1->cloneBaseType( $4->addAsmName( $5 )->addInitializer( $6 ) ) );
1412	// }
1413	// ;
1414
1415	c_declaration:
1416	declaration_specifier declaring_list
1417	{
1418	$$ = distAttr( $1, $2 );
1419	}
1420	\| typedef_declaration
1421	\| typedef_expression // GCC, naming expression type
1422	\| sue_declaration_specifier
1423	;
1424
1425	declaring_list:
1426	// A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1427	// storage-class
1428	declarator asm_name_opt initializer_opt
1429	{
1430	typedefTable.addToEnclosingScope( TypedefTable::ID );
1431	$$ = $1->addAsmName( $2 )->addInitializer( $3 );
1432	}
1433	\| declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
1434	{
1435	typedefTable.addToEnclosingScope( TypedefTable::ID );
1436	$$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) );
1437	}
1438	;
1439
1440	declaration_specifier: // type specifier + storage class
1441	basic_declaration_specifier
1442	\| sue_declaration_specifier
1443	\| type_declaration_specifier
1444	;
1445
1446	declaration_specifier_nobody: // type specifier + storage class - {...}
1447	// Preclude SUE declarations in restricted scopes:
1448	//
1449	// int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1450	//
1451	// because it is impossible to call f due to name equivalence.
1452	basic_declaration_specifier
1453	\| sue_declaration_specifier_nobody
1454	\| type_declaration_specifier
1455	;
1456
1457	type_specifier: // type specifier
1458	basic_type_specifier
1459	\| sue_type_specifier
1460	\| type_type_specifier
1461	;
1462
1463	type_specifier_nobody: // type specifier - {...}
1464	// Preclude SUE declarations in restricted scopes:
1465	//
1466	// int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1467	//
1468	// because it is impossible to call f due to name equivalence.
1469	basic_type_specifier
1470	\| sue_type_specifier_nobody
1471	\| type_type_specifier
1472	;
1473
1474	type_qualifier_list_opt: // GCC, used in asm_statement
1475	// empty
1476	{ $$ = nullptr; }
1477	\| type_qualifier_list
1478	;
1479
1480	type_qualifier_list:
1481	// A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
1482	//
1483	// ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1484	// specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1485	// appeared only once.
1486	type_qualifier
1487	\| type_qualifier_list type_qualifier
1488	{ $$ = $1->addQualifiers( $2 ); }
1489	;
1490
1491	type_qualifier:
1492	type_qualifier_name
1493	\| attribute
1494	;
1495
1496	type_qualifier_name:
1497	CONST
1498	{ $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
1499	\| RESTRICT
1500	{ $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
1501	\| VOLATILE
1502	{ $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
1503	\| MUTEX
1504	{ $$ = DeclarationNode::newTypeQualifier( Type::Mutex ); }
1505	\| ATOMIC
1506	{ $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
1507	\| FORALL '('
1508	{
1509	typedefTable.enterScope();
1510	}
1511	type_parameter_list ')' // CFA
1512	{
1513	typedefTable.leaveScope();
1514	$$ = DeclarationNode::newForall( $4 );
1515	}
1516	;
1517
1518	declaration_qualifier_list:
1519	storage_class_list
1520	\| type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
1521	{ $$ = $1->addQualifiers( $2 ); }
1522	\| declaration_qualifier_list type_qualifier_list storage_class_list
1523	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1524	;
1525
1526	storage_class_list:
1527	// A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1528	// only one of each is specified, except for inline, which can appear with the others.
1529	//
1530	// ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1531	// specifiers in a declaration.
1532	storage_class
1533	\| storage_class_list storage_class
1534	{ $$ = $1->addQualifiers( $2 ); }
1535	;
1536
1537	storage_class:
1538	EXTERN
1539	{ $$ = DeclarationNode::newStorageClass( Type::Extern ); }
1540	\| STATIC
1541	{ $$ = DeclarationNode::newStorageClass( Type::Static ); }
1542	\| AUTO
1543	{ $$ = DeclarationNode::newStorageClass( Type::Auto ); }
1544	\| REGISTER
1545	{ $$ = DeclarationNode::newStorageClass( Type::Register ); }
1546	\| THREADLOCAL // C11
1547	{ $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
1548	// Put function specifiers here to simplify parsing rules, but separate them semantically.
1549	\| INLINE // C99
1550	{ $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
1551	\| FORTRAN // C99
1552	{ $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
1553	\| NORETURN // C11
1554	{ $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
1555	;
1556
1557	basic_type_name:
1558	CHAR
1559	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1560	\| DOUBLE
1561	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
1562	\| FLOAT
1563	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1564	\| INT
1565	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1566	\| LONG
1567	{ $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
1568	\| SHORT
1569	{ $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1570	\| SIGNED
1571	{ $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1572	\| UNSIGNED
1573	{ $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1574	\| VOID
1575	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1576	\| BOOL // C99
1577	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
1578	\| COMPLEX // C99
1579	{ $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
1580	\| IMAGINARY // C99
1581	{ $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
1582	\| ZERO_T
1583	{ $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1584	\| ONE_T
1585	{ $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
1586	\| VALIST // GCC, __builtin_va_list
1587	{ $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
1588	;
1589
1590	basic_declaration_specifier:
1591	// A semantic check is necessary for conflicting storage classes.
1592	basic_type_specifier
1593	\| declaration_qualifier_list basic_type_specifier
1594	{ $$ = $2->addQualifiers( $1 ); }
1595	\| basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1596	{ $$ = $1->addQualifiers( $2 ); }
1597	\| basic_declaration_specifier storage_class type_qualifier_list
1598	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1599	\| basic_declaration_specifier storage_class basic_type_specifier
1600	{ $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1601	;
1602
1603	basic_type_specifier:
1604	direct_type
1605	\| type_qualifier_list_opt indirect_type type_qualifier_list_opt
1606	{ $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1607	;
1608
1609	direct_type:
1610	// A semantic check is necessary for conflicting type qualifiers.
1611	basic_type_name
1612	\| type_qualifier_list basic_type_name
1613	{ $$ = $2->addQualifiers( $1 ); }
1614	\| direct_type type_qualifier
1615	{ $$ = $1->addQualifiers( $2 ); }
1616	\| direct_type basic_type_name
1617	{ $$ = $1->addType( $2 ); }
1618	;
1619
1620	indirect_type:
1621	TYPEOF '(' type ')' // GCC: typeof(x) y;
1622	{ $$ = $3; }
1623	\| TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y;
1624	{ $$ = DeclarationNode::newTypeof( $3 ); }
1625	\| ATTR_TYPEGENname '(' type ')' // CFA: e.g., @type(x) y;
1626	{ $$ = DeclarationNode::newAttr( $1, $3 ); }
1627	\| ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y;
1628	{ $$ = DeclarationNode::newAttr( $1, $3 ); }
1629	;
1630
1631	sue_declaration_specifier: // struct, union, enum + storage class + type specifier
1632	sue_type_specifier
1633	\| declaration_qualifier_list sue_type_specifier
1634	{ $$ = $2->addQualifiers( $1 ); }
1635	\| sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1636	{ $$ = $1->addQualifiers( $2 ); }
1637	\| sue_declaration_specifier storage_class type_qualifier_list
1638	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1639	;
1640
1641	sue_type_specifier: // struct, union, enum + type specifier
1642	elaborated_type
1643	\| type_qualifier_list
1644	{ if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1645	elaborated_type
1646	{ $$ = $3->addQualifiers( $1 ); }
1647	\| sue_type_specifier type_qualifier
1648	{ $$ = $1->addQualifiers( $2 ); }
1649	;
1650
1651	sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1652	sue_type_specifier_nobody
1653	\| declaration_qualifier_list sue_type_specifier_nobody
1654	{ $$ = $2->addQualifiers( $1 ); }
1655	\| sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1656	{ $$ = $1->addQualifiers( $2 ); }
1657	\| sue_declaration_specifier_nobody storage_class type_qualifier_list
1658	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1659	;
1660
1661	sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1662	elaborated_type_nobody
1663	\| type_qualifier_list elaborated_type_nobody
1664	{ $$ = $2->addQualifiers( $1 ); }
1665	\| sue_type_specifier_nobody type_qualifier
1666	{ $$ = $1->addQualifiers( $2 ); }
1667	;
1668
1669	type_declaration_specifier:
1670	type_type_specifier
1671	\| declaration_qualifier_list type_type_specifier
1672	{ $$ = $2->addQualifiers( $1 ); }
1673	\| type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1674	{ $$ = $1->addQualifiers( $2 ); }
1675	\| type_declaration_specifier storage_class type_qualifier_list
1676	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1677	;
1678
1679	type_type_specifier: // typedef types
1680	type_name
1681	\| type_qualifier_list type_name
1682	{ $$ = $2->addQualifiers( $1 ); }
1683	\| type_type_specifier type_qualifier
1684	{ $$ = $1->addQualifiers( $2 ); }
1685	;
1686
1687	type_name:
1688	TYPEDEFname
1689	{ $$ = DeclarationNode::newFromTypedef( $1 ); }
1690	\| '.' TYPEDEFname
1691	{ $$ = DeclarationNode::newFromTypedef( $2 ); } // FIX ME
1692	\| type_name '.' TYPEDEFname
1693	{ $$ = DeclarationNode::newFromTypedef( $3 ); } // FIX ME
1694	\| typegen_name
1695	\| '.' typegen_name
1696	{ $$ = $2; } // FIX ME
1697	\| type_name '.' typegen_name
1698	{ $$ = $3; } // FIX ME
1699	;
1700
1701	typegen_name: // CFA
1702	TYPEGENname '(' ')'
1703	{ $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1704	\| TYPEGENname '(' type_list ')'
1705	{ $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
1706	;
1707
1708	elaborated_type: // struct, union, enum
1709	aggregate_type
1710	\| enum_type
1711	;
1712
1713	elaborated_type_nobody: // struct, union, enum - {...}
1714	aggregate_type_nobody
1715	\| enum_type_nobody
1716	;
1717
1718	aggregate_type: // struct, union
1719	aggregate_key attribute_list_opt '{' field_declaration_list '}'
1720	{ $$ = DeclarationNode::newAggregate( $1, new string( DeclarationNode::anonymous.newName() ), nullptr, $4, true )->addQualifiers( $2 ); }
1721	\| aggregate_key attribute_list_opt no_attr_identifier_or_type_name
1722	{
1723	typedefTable.makeTypedef( *$3 ); // create typedef
1724	if ( forall ) typedefTable.changeKind( *$3, TypedefTable::TG ); // possibly update
1725	forall = false; // reset
1726	}
1727	'{' field_declaration_list '}'
1728	{ $$ = DeclarationNode::newAggregate( $1, $3, nullptr, $6, true )->addQualifiers( $2 ); }
1729	\| aggregate_key attribute_list_opt '(' type_list ')' '{' field_declaration_list '}' // CFA
1730	{ $$ = DeclarationNode::newAggregate( $1, new string( DeclarationNode::anonymous.newName() ), $4, $7, false )->addQualifiers( $2 ); }
1731	\| aggregate_type_nobody
1732	;
1733
1734	aggregate_type_nobody: // struct, union - {...}
1735	aggregate_key attribute_list_opt no_attr_identifier
1736	{
1737	typedefTable.makeTypedef( *$3 );
1738	$$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
1739	}
1740	\| aggregate_key attribute_list_opt TYPEDEFname
1741	{
1742	typedefTable.makeTypedef( *$3 );
1743	$$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
1744	}
1745	\| aggregate_key attribute_list_opt typegen_name // CFA
1746	{ $$ = $3->addQualifiers( $2 ); }
1747	;
1748
1749	aggregate_key:
1750	STRUCT
1751	{ $$ = DeclarationNode::Struct; }
1752	\| UNION
1753	{ $$ = DeclarationNode::Union; }
1754	\| COROUTINE
1755	{ $$ = DeclarationNode::Coroutine; }
1756	\| MONITOR
1757	{ $$ = DeclarationNode::Monitor; }
1758	\| THREAD
1759	{ $$ = DeclarationNode::Thread; }
1760	;
1761
1762	field_declaration_list:
1763	// empty
1764	{ $$ = nullptr; }
1765	\| field_declaration_list field_declaration
1766	{ $$ = $1 ? $1->appendList( $2 ) : $2; }
1767	;
1768
1769	field_declaration:
1770	cfa_field_declaring_list ';' // CFA, new style field declaration
1771	\| EXTENSION cfa_field_declaring_list ';' // GCC
1772	{
1773	distExt( $2 ); // mark all fields in list
1774	$$ = $2;
1775	}
1776	\| type_specifier field_declaring_list ';'
1777	{
1778	$$ = distAttr( $1, $2 ); }
1779	\| EXTENSION type_specifier field_declaring_list ';' // GCC
1780	{
1781	distExt( $3 ); // mark all fields in list
1782	$$ = distAttr( $2, $3 );
1783	}
1784	;
1785
1786	cfa_field_declaring_list: // CFA, new style field declaration
1787	cfa_abstract_declarator_tuple // CFA, no field name
1788	\| cfa_abstract_declarator_tuple no_attr_identifier_or_type_name
1789	{ $$ = $1->addName( $2 ); }
1790	\| cfa_field_declaring_list ',' no_attr_identifier_or_type_name
1791	{ $$ = $1->appendList( $1->cloneType( $3 ) ); }
1792	\| cfa_field_declaring_list ',' // CFA, no field name
1793	{ $$ = $1->appendList( $1->cloneType( 0 ) ); }
1794	;
1795
1796	field_declaring_list:
1797	field_declarator
1798	\| field_declaring_list ',' attribute_list_opt field_declarator
1799	{ $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
1800	;
1801
1802	field_declarator:
1803	// empty
1804	{ $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name
1805	// '@'
1806	// { $$ = DeclarationNode::newName( new string( DeclarationNode::anonymous.newName() ) ); } // CFA, no field name
1807	\| bit_subrange_size // no field name
1808	{ $$ = DeclarationNode::newBitfield( $1 ); }
1809	\| variable_declarator bit_subrange_size_opt
1810	// A semantic check is required to ensure bit_subrange only appears on base type int.
1811	{ $$ = $1->addBitfield( $2 ); }
1812	\| variable_type_redeclarator bit_subrange_size_opt
1813	// A semantic check is required to ensure bit_subrange only appears on base type int.
1814	{ $$ = $1->addBitfield( $2 ); }
1815	\| variable_abstract_declarator // CFA, no field name
1816	;
1817
1818	bit_subrange_size_opt:
1819	// empty
1820	{ $$ = nullptr; }
1821	\| bit_subrange_size
1822	{ $$ = $1; }
1823	;
1824
1825	bit_subrange_size:
1826	':' constant_expression
1827	{ $$ = $2; }
1828	;
1829
1830	enum_type: // enum
1831	ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
1832	{ $$ = DeclarationNode::newEnum( new string( DeclarationNode::anonymous.newName() ), $4, true )->addQualifiers( $2 ); }
1833	\| ENUM attribute_list_opt no_attr_identifier_or_type_name
1834	{ typedefTable.makeTypedef( *$3 ); }
1835	'{' enumerator_list comma_opt '}'
1836	{ $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
1837	\| enum_type_nobody
1838	;
1839
1840	enum_type_nobody: // enum - {...}
1841	ENUM attribute_list_opt no_attr_identifier_or_type_name
1842	{
1843	typedefTable.makeTypedef( *$3 );
1844	$$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 );
1845	}
1846	;
1847
1848	enumerator_list:
1849	no_attr_identifier_or_type_name enumerator_value_opt
1850	{ $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
1851	\| enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt
1852	{ $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
1853	;
1854
1855	enumerator_value_opt:
1856	// empty
1857	{ $$ = nullptr; }
1858	\| '=' constant_expression
1859	{ $$ = $2; }
1860	;
1861
1862	// Minimum of one parameter after which ellipsis is allowed only at the end.
1863
1864	cfa_parameter_type_list_opt: // CFA
1865	// empty
1866	{ $$ = nullptr; }
1867	\| cfa_parameter_type_list
1868	;
1869
1870	cfa_parameter_type_list: // CFA, abstract + real
1871	cfa_abstract_parameter_list
1872	\| cfa_parameter_list
1873	\| cfa_parameter_list pop ',' push cfa_abstract_parameter_list
1874	{ $$ = $1->appendList( $5 ); }
1875	\| cfa_abstract_parameter_list pop ',' push ELLIPSIS
1876	{ $$ = $1->addVarArgs(); }
1877	\| cfa_parameter_list pop ',' push ELLIPSIS
1878	{ $$ = $1->addVarArgs(); }
1879	;
1880
1881	cfa_parameter_list: // CFA
1882	// To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
1883	// factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
1884	cfa_parameter_declaration
1885	\| cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
1886	{ $$ = $1->appendList( $5 ); }
1887	\| cfa_parameter_list pop ',' push cfa_parameter_declaration
1888	{ $$ = $1->appendList( $5 ); }
1889	\| cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
1890	{ $$ = $1->appendList( $5 )->appendList( $9 ); }
1891	;
1892
1893	cfa_abstract_parameter_list: // CFA, new & old style abstract
1894	cfa_abstract_parameter_declaration
1895	\| cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
1896	{ $$ = $1->appendList( $5 ); }
1897	;
1898
1899	parameter_type_list_opt:
1900	// empty
1901	{ $$ = nullptr; }
1902	\| parameter_type_list
1903	;
1904
1905	parameter_type_list:
1906	parameter_list
1907	\| parameter_list pop ',' push ELLIPSIS
1908	{ $$ = $1->addVarArgs(); }
1909	;
1910
1911	parameter_list: // abstract + real
1912	abstract_parameter_declaration
1913	\| parameter_declaration
1914	\| parameter_list pop ',' push abstract_parameter_declaration
1915	{ $$ = $1->appendList( $5 ); }
1916	\| parameter_list pop ',' push parameter_declaration
1917	{ $$ = $1->appendList( $5 ); }
1918	;
1919
1920	// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
1921	// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
1922
1923	cfa_parameter_declaration: // CFA, new & old style parameter declaration
1924	parameter_declaration
1925	\| cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initialize_opt
1926	{ $$ = $1->addName( $2 ); }
1927	\| cfa_abstract_tuple identifier_or_type_name default_initialize_opt
1928	// To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
1929	{ $$ = $1->addName( $2 ); }
1930	\| type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initialize_opt
1931	{ $$ = $2->addName( $3 )->addQualifiers( $1 ); }
1932	\| cfa_function_specifier
1933	;
1934
1935	cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
1936	abstract_parameter_declaration
1937	\| cfa_identifier_parameter_declarator_no_tuple
1938	\| cfa_abstract_tuple
1939	// To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
1940	\| type_qualifier_list cfa_abstract_tuple
1941	{ $$ = $2->addQualifiers( $1 ); }
1942	\| cfa_abstract_function
1943	;
1944
1945	parameter_declaration:
1946	// No SUE declaration in parameter list.
1947	declaration_specifier_nobody identifier_parameter_declarator default_initialize_opt
1948	{
1949	typedefTable.addToEnclosingScope( TypedefTable::ID );
1950	$$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr );
1951	}
1952	\| declaration_specifier_nobody type_parameter_redeclarator default_initialize_opt
1953	{
1954	typedefTable.addToEnclosingScope( TypedefTable::ID );
1955	$$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr );
1956	}
1957	;
1958
1959	abstract_parameter_declaration:
1960	declaration_specifier_nobody default_initialize_opt
1961	{ $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
1962	\| declaration_specifier_nobody abstract_parameter_declarator default_initialize_opt
1963	{ $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
1964	;
1965
1966	// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
1967	// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
1968	// identifiers. The ANSI-style parameter-list can redefine a typedef name.
1969
1970	identifier_list: // K&R-style parameter list => no types
1971	no_attr_identifier
1972	{ $$ = DeclarationNode::newName( $1 ); }
1973	\| identifier_list ',' no_attr_identifier
1974	{ $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
1975	;
1976
1977	identifier_or_type_name:
1978	identifier
1979	\| TYPEDEFname
1980	\| TYPEGENname
1981	;
1982
1983	no_attr_identifier_or_type_name:
1984	no_attr_identifier
1985	\| TYPEDEFname
1986	\| TYPEGENname
1987	;
1988
1989	type_no_function: // sizeof, alignof, cast (constructor)
1990	cfa_abstract_declarator_tuple // CFA
1991	\| type_specifier
1992	\| type_specifier abstract_declarator
1993	{ $$ = $2->addType( $1 ); }
1994	;
1995
1996	type: // typeof, assertion
1997	type_no_function
1998	\| cfa_abstract_function // CFA
1999	;
2000
2001	initializer_opt:
2002	// empty
2003	{ $$ = nullptr; }
2004	\| '=' initializer
2005	{ $$ = $2; }
2006	\| '=' VOID
2007	{ $$ = nullptr; }
2008	\| ATassign initializer
2009	{ $$ = $2->set_maybeConstructed( false ); }
2010	;
2011
2012	initializer:
2013	assignment_expression { $$ = new InitializerNode( $1 ); }
2014	\| '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); }
2015	;
2016
2017	initializer_list:
2018	// empty
2019	{ $$ = nullptr; }
2020	\| initializer
2021	\| designation initializer { $$ = $2->set_designators( $1 ); }
2022	\| initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2023	\| initializer_list ',' designation initializer
2024	{ $$ = (InitializerNode *)( $1->set_last( $4->set_designators( $3 ) ) ); }
2025	;
2026
2027	// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2028	// '=' to separator the designator from the initializer value, as in:
2029	//
2030	// int x[10] = { [1] = 3 };
2031	//
2032	// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2033	// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2034	// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2035	// shift/reduce conflicts
2036
2037	designation:
2038	designator_list ':' // C99, CFA uses ":" instead of "="
2039	\| no_attr_identifier ':' // GCC, field name
2040	{ $$ = new ExpressionNode( build_varref( $1 ) ); }
2041	;
2042
2043	designator_list: // C99
2044	designator
2045	\| designator_list designator
2046	{ $$ = (ExpressionNode *)( $1->set_last( $2 ) ); }
2047	//\| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
2048	;
2049
2050	designator:
2051	'.' no_attr_identifier // C99, field name
2052	{ $$ = new ExpressionNode( build_varref( $2 ) ); }
2053	\| '[' push assignment_expression pop ']' // C99, single array element
2054	// assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
2055	{ $$ = $3; }
2056	\| '[' push subrange pop ']' // CFA, multiple array elements
2057	{ $$ = $3; }
2058	\| '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
2059	{ $$ = new ExpressionNode( build_range( $3, $5 ) ); }
2060	\| '.' '[' push field_list pop ']' // CFA, tuple field selector
2061	{ $$ = $4; }
2062	;
2063
2064	// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2065	// rather than an object-oriented type system. This required four groups of extensions:
2066	//
2067	// Overloading: function, data, and operator identifiers may be overloaded.
2068	//
2069	// Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
2070	// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2071	// definitions of new types. Type declarations with storage class "extern" provide opaque types.
2072	//
2073	// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2074	// site. A polymorphic function is not a template; it is a function, with an address and a type.
2075	//
2076	// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
2077	// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2078	// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2079	// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2080	// on type arguments of polymorphic functions.
2081
2082	type_parameter_list: // CFA
2083	type_parameter
2084	{ $$ = $1; }
2085	\| type_parameter_list ',' type_parameter
2086	{ $$ = $1->appendList( $3 ); }
2087	;
2088
2089	type_initializer_opt: // CFA
2090	// empty
2091	{ $$ = nullptr; }
2092	\| '=' type
2093	{ $$ = $2; }
2094	;
2095
2096	type_parameter: // CFA
2097	type_class no_attr_identifier_or_type_name
2098	{ typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); }
2099	type_initializer_opt assertion_list_opt
2100	{ $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2101	\| type_specifier identifier_parameter_declarator
2102	;
2103
2104	type_class: // CFA
2105	OTYPE
2106	{ $$ = DeclarationNode::Otype; }
2107	\| DTYPE
2108	{ $$ = DeclarationNode::Dtype; }
2109	\| FTYPE
2110	{ $$ = DeclarationNode::Ftype; }
2111	\| TTYPE
2112	{ $$ = DeclarationNode::Ttype; }
2113	;
2114
2115	assertion_list_opt: // CFA
2116	// empty
2117	{ $$ = nullptr; }
2118	\| assertion_list_opt assertion
2119	{ $$ = $1 ? $1->appendList( $2 ) : $2; }
2120	;
2121
2122	assertion: // CFA
2123	'\|' no_attr_identifier_or_type_name '(' type_list ')'
2124	{
2125	typedefTable.openTrait( *$2 );
2126	$$ = DeclarationNode::newTraitUse( $2, $4 );
2127	}
2128	\| '\|' '{' push trait_declaration_list '}'
2129	{ $$ = $4; }
2130	\| '\|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list '}' '(' type_list ')'
2131	{ $$ = nullptr; }
2132	;
2133
2134	type_list: // CFA
2135	type
2136	{ $$ = new ExpressionNode( build_typevalue( $1 ) ); }
2137	\| assignment_expression
2138	\| type_list ',' type
2139	{ $$ = (ExpressionNode *)( $1->set_last( new ExpressionNode( build_typevalue( $3 ) ) ) ); }
2140	\| type_list ',' assignment_expression
2141	{ $$ = (ExpressionNode *)( $1->set_last( $3 )); }
2142	;
2143
2144	type_declaring_list: // CFA
2145	OTYPE type_declarator
2146	{ $$ = $2; }
2147	\| storage_class_list OTYPE type_declarator
2148	{ $$ = $3->addQualifiers( $1 ); }
2149	\| type_declaring_list ',' type_declarator
2150	{ $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
2151	;
2152
2153	type_declarator: // CFA
2154	type_declarator_name assertion_list_opt
2155	{ $$ = $1->addAssertions( $2 ); }
2156	\| type_declarator_name assertion_list_opt '=' type
2157	{ $$ = $1->addAssertions( $2 )->addType( $4 ); }
2158	;
2159
2160	type_declarator_name: // CFA
2161	no_attr_identifier_or_type_name
2162	{
2163	typedefTable.addToEnclosingScope( *$1, TypedefTable::TD );
2164	$$ = DeclarationNode::newTypeDecl( $1, 0 );
2165	}
2166	\| no_attr_identifier_or_type_name '(' push type_parameter_list pop ')'
2167	{
2168	typedefTable.addToEnclosingScope( *$1, TypedefTable::TG );
2169	$$ = DeclarationNode::newTypeDecl( $1, $4 );
2170	}
2171	;
2172
2173	trait_specifier: // CFA
2174	TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}'
2175	{
2176	typedefTable.addToEnclosingScope( *$2, TypedefTable::ID );
2177	$$ = DeclarationNode::newTrait( $2, $5, 0 );
2178	}
2179	\| TRAIT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{'
2180	{
2181	typedefTable.enterTrait( *$2 );
2182	typedefTable.enterScope();
2183	}
2184	trait_declaration_list '}'
2185	{
2186	typedefTable.leaveTrait();
2187	typedefTable.addToEnclosingScope( *$2, TypedefTable::ID );
2188	$$ = DeclarationNode::newTrait( $2, $5, $10 );
2189	}
2190	;
2191
2192	trait_declaration_list: // CFA
2193	trait_declaration
2194	\| trait_declaration_list push trait_declaration
2195	{ $$ = $1->appendList( $3 ); }
2196	;
2197
2198	trait_declaration: // CFA
2199	cfa_trait_declaring_list pop ';'
2200	\| trait_declaring_list pop ';'
2201	;
2202
2203	cfa_trait_declaring_list: // CFA
2204	cfa_variable_specifier
2205	{
2206	typedefTable.addToEnclosingScope2( TypedefTable::ID );
2207	$$ = $1;
2208	}
2209	\| cfa_function_specifier
2210	{
2211	typedefTable.addToEnclosingScope2( TypedefTable::ID );
2212	$$ = $1;
2213	}
2214	\| cfa_trait_declaring_list pop ',' push identifier_or_type_name
2215	{
2216	typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID );
2217	$$ = $1->appendList( $1->cloneType( $5 ) );
2218	}
2219	;
2220
2221	trait_declaring_list: // CFA
2222	type_specifier declarator
2223	{
2224	typedefTable.addToEnclosingScope2( TypedefTable::ID );
2225	$$ = $2->addType( $1 );
2226	}
2227	\| trait_declaring_list pop ',' push declarator
2228	{
2229	typedefTable.addToEnclosingScope2( TypedefTable::ID );
2230	$$ = $1->appendList( $1->cloneBaseType( $5 ) );
2231	}
2232	;
2233
2234	//*************************** EXTERNAL DEFINITIONS ***************************
2235
2236	translation_unit:
2237	// empty
2238	{} // empty input file
2239	\| external_definition_list
2240	{ parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
2241	;
2242
2243	external_definition_list:
2244	external_definition
2245	\| external_definition_list push external_definition
2246	{ $$ = $1 ? $1->appendList( $3 ) : $3; }
2247	;
2248
2249	external_definition_list_opt:
2250	// empty
2251	{ $$ = nullptr; }
2252	\| external_definition_list
2253	;
2254
2255	external_definition:
2256	declaration
2257	\| external_function_definition
2258	\| ASM '(' string_literal ')' ';' // GCC, global assembler statement
2259	{
2260	$$ = DeclarationNode::newAsmStmt( new StatementNode( build_asmstmt( false, $3, 0 ) ) );
2261	}
2262	\| EXTERN STRINGliteral // C++-style linkage specifier
2263	{
2264	linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
2265	linkage = LinkageSpec::linkageUpdate( linkage, $2 );
2266	}
2267	'{' external_definition_list_opt '}'
2268	{
2269	linkage = linkageStack.top();
2270	linkageStack.pop();
2271	$$ = $5;
2272	}
2273	\| EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2274	{
2275	distExt( $2 ); // mark all fields in list
2276	$$ = $2;
2277	}
2278	;
2279
2280	external_function_definition:
2281	function_definition
2282	// These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
2283	// legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2284	// Parsing is possible because function_definition does not appear in the context of an expression (nested
2285	// functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2286	// declaration must still have a type_specifier. OBSOLESCENT (see 1)
2287	\| function_declarator compound_statement
2288	{
2289	typedefTable.addToEnclosingScope( TypedefTable::ID );
2290	typedefTable.leaveScope();
2291	$$ = $1->addFunctionBody( $2 );
2292	}
2293	\| KR_function_declarator KR_declaration_list_opt compound_statement
2294	{
2295	typedefTable.addToEnclosingScope( TypedefTable::ID );
2296	typedefTable.leaveScope();
2297	$$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 );
2298	}
2299	;
2300
2301	with_clause_opt:
2302	// empty
2303	{ $$ = nullptr; } // FIX ME
2304	\| WITH '(' tuple_expression_list ')'
2305	{ $$ = nullptr; } // FIX ME
2306	;
2307
2308	function_definition:
2309	cfa_function_declaration with_clause_opt compound_statement // CFA
2310	{
2311	typedefTable.addToEnclosingScope( TypedefTable::ID );
2312	typedefTable.leaveScope();
2313	$$ = $1->addFunctionBody( $3 );
2314	}
2315	\| declaration_specifier function_declarator with_clause_opt compound_statement
2316	{
2317	typedefTable.addToEnclosingScope( TypedefTable::ID );
2318	typedefTable.leaveScope();
2319	$$ = $2->addFunctionBody( $4 )->addType( $1 );
2320	}
2321	\| type_qualifier_list function_declarator with_clause_opt compound_statement
2322	{
2323	typedefTable.addToEnclosingScope( TypedefTable::ID );
2324	typedefTable.leaveScope();
2325	$$ = $2->addFunctionBody( $4 )->addQualifiers( $1 );
2326	}
2327	\| declaration_qualifier_list function_declarator with_clause_opt compound_statement
2328	{
2329	typedefTable.addToEnclosingScope( TypedefTable::ID );
2330	typedefTable.leaveScope();
2331	$$ = $2->addFunctionBody( $4 )->addQualifiers( $1 );
2332	}
2333	\| declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
2334	{
2335	typedefTable.addToEnclosingScope( TypedefTable::ID );
2336	typedefTable.leaveScope();
2337	$$ = $3->addFunctionBody( $5 )->addQualifiers( $2 )->addQualifiers( $1 );
2338	}
2339
2340	// Old-style K&R function definition, OBSOLESCENT (see 4)
2341	\| declaration_specifier KR_function_declarator KR_declaration_list_opt with_clause_opt compound_statement
2342	{
2343	typedefTable.addToEnclosingScope( TypedefTable::ID );
2344	typedefTable.leaveScope();
2345	$$ = $2->addOldDeclList( $3 )->addFunctionBody( $5 )->addType( $1 );
2346	}
2347	\| type_qualifier_list KR_function_declarator KR_declaration_list_opt with_clause_opt compound_statement
2348	{
2349	typedefTable.addToEnclosingScope( TypedefTable::ID );
2350	typedefTable.leaveScope();
2351	$$ = $2->addOldDeclList( $3 )->addFunctionBody( $5 )->addQualifiers( $1 );
2352	}
2353
2354	// Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4)
2355	\| declaration_qualifier_list KR_function_declarator KR_declaration_list_opt with_clause_opt compound_statement
2356	{
2357	typedefTable.addToEnclosingScope( TypedefTable::ID );
2358	typedefTable.leaveScope();
2359	$$ = $2->addOldDeclList( $3 )->addFunctionBody( $5 )->addQualifiers( $1 );
2360	}
2361	\| declaration_qualifier_list type_qualifier_list KR_function_declarator KR_declaration_list_opt with_clause_opt compound_statement
2362	{
2363	typedefTable.addToEnclosingScope( TypedefTable::ID );
2364	typedefTable.leaveScope();
2365	$$ = $3->addOldDeclList( $4 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 );
2366	}
2367	;
2368
2369	declarator:
2370	variable_declarator
2371	\| variable_type_redeclarator
2372	\| function_declarator
2373	;
2374
2375	subrange:
2376	constant_expression '~' constant_expression // CFA, integer subrange
2377	{ $$ = new ExpressionNode( build_range( $1, $3 ) ); }
2378	;
2379
2380	asm_name_opt: // GCC
2381	// empty
2382	{ $$ = nullptr; }
2383	\| ASM '(' string_literal ')' attribute_list_opt
2384	{
2385	DeclarationNode * name = new DeclarationNode();
2386	name->asmName = $3;
2387	$$ = name->addQualifiers( $5 );
2388	}
2389	;
2390
2391	attribute_list_opt: // GCC
2392	// empty
2393	{ $$ = nullptr; }
2394	\| attribute_list
2395	;
2396
2397	attribute_list: // GCC
2398	attribute
2399	\| attribute_list attribute
2400	{ $$ = $2->addQualifiers( $1 ); }
2401	;
2402
2403	attribute: // GCC
2404	ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2405	{ $$ = $4; }
2406	;
2407
2408	attribute_name_list: // GCC
2409	attribute_name
2410	\| attribute_name_list ',' attribute_name
2411	{ $$ = $3->addQualifiers( $1 ); }
2412	;
2413
2414	attribute_name: // GCC
2415	// empty
2416	{ $$ = nullptr; }
2417	\| attr_name
2418	{ $$ = DeclarationNode::newAttribute( $1 ); }
2419	\| attr_name '(' argument_expression_list ')'
2420	{ $$ = DeclarationNode::newAttribute( $1, $3 ); }
2421	;
2422
2423	attr_name: // GCC
2424	IDENTIFIER
2425	\| quasi_keyword
2426	\| TYPEDEFname
2427	\| TYPEGENname
2428	\| CONST
2429	{ $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
2430	;
2431
2432	// ============================================================================
2433	// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2434	// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2435	// in:
2436	//
2437	// int (*f())[10] { ... };
2438	// ... (*f())[3] += 1; // definition mimics usage
2439	//
2440	// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2441	// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
2442	// ============================================================================
2443
2444	// ----------------------------------------------------------------------------
2445	// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2446	// to define a variable or function prototype, e.g.:
2447	//
2448	// valid declaration invalid definition
2449	// ----------------- ------------------
2450	// int f; int f {}
2451	// int f; int f {}
2452	// int f[10]; int f[10] {}
2453	// int (f)(int); int (f)(int) {}
2454	//
2455	// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2456	// variable_declarator and function_declarator.
2457	// ----------------------------------------------------------------------------
2458
2459	// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2460	// declaring an array of functions versus a pointer to an array of functions.
2461
2462	variable_declarator:
2463	paren_identifier attribute_list_opt
2464	{ $$ = $1->addQualifiers( $2 ); }
2465	\| variable_ptr
2466	\| variable_array attribute_list_opt
2467	{ $$ = $1->addQualifiers( $2 ); }
2468	\| variable_function attribute_list_opt
2469	{ $$ = $1->addQualifiers( $2 ); }
2470	;
2471
2472	paren_identifier:
2473	identifier
2474	{
2475	typedefTable.setNextIdentifier( *$1 );
2476	$$ = DeclarationNode::newName( $1 );
2477	}
2478	\| '(' paren_identifier ')' // redundant parenthesis
2479	{ $$ = $2; }
2480	;
2481
2482	variable_ptr:
2483	ptrref_operator variable_declarator
2484	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2485	\| ptrref_operator type_qualifier_list variable_declarator
2486	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2487	\| '(' variable_ptr ')' attribute_list_opt
2488	{ $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
2489	;
2490
2491	variable_array:
2492	paren_identifier array_dimension
2493	{ $$ = $1->addArray( $2 ); }
2494	\| '(' variable_ptr ')' array_dimension
2495	{ $$ = $2->addArray( $4 ); }
2496	\| '(' variable_array ')' multi_array_dimension // redundant parenthesis
2497	{ $$ = $2->addArray( $4 ); }
2498	\| '(' variable_array ')' // redundant parenthesis
2499	{ $$ = $2; }
2500	;
2501
2502	variable_function:
2503	'(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2504	{ $$ = $2->addParamList( $6 ); }
2505	\| '(' variable_function ')' // redundant parenthesis
2506	{ $$ = $2; }
2507	;
2508
2509	// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2510	// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2511	// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
2512
2513	function_declarator:
2514	function_no_ptr attribute_list_opt
2515	{ $$ = $1->addQualifiers( $2 ); }
2516	\| function_ptr
2517	\| function_array attribute_list_opt
2518	{ $$ = $1->addQualifiers( $2 ); }
2519	;
2520
2521	function_no_ptr:
2522	paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2523	{ $$ = $1->addParamList( $4 ); }
2524	\| '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2525	{ $$ = $2->addParamList( $6 ); }
2526	\| '(' function_no_ptr ')' // redundant parenthesis
2527	{ $$ = $2; }
2528	;
2529
2530	function_ptr:
2531	ptrref_operator function_declarator
2532	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2533	\| ptrref_operator type_qualifier_list function_declarator
2534	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2535	\| '(' function_ptr ')'
2536	{ $$ = $2; }
2537	;
2538
2539	function_array:
2540	'(' function_ptr ')' array_dimension
2541	{ $$ = $2->addArray( $4 ); }
2542	\| '(' function_array ')' multi_array_dimension // redundant parenthesis
2543	{ $$ = $2->addArray( $4 ); }
2544	\| '(' function_array ')' // redundant parenthesis
2545	{ $$ = $2; }
2546	;
2547
2548	// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2549	//
2550	// f( a, b, c ) int a, *b, c[]; {}
2551	//
2552	// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2553	// returning arrays and functions versus pointers to arrays and functions.
2554
2555	KR_function_declarator:
2556	KR_function_no_ptr
2557	\| KR_function_ptr
2558	\| KR_function_array
2559	;
2560
2561	KR_function_no_ptr:
2562	paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2563	{ $$ = $1->addIdList( $3 ); }
2564	\| '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2565	{ $$ = $2->addParamList( $6 ); }
2566	\| '(' KR_function_no_ptr ')' // redundant parenthesis
2567	{ $$ = $2; }
2568	;
2569
2570	KR_function_ptr:
2571	ptrref_operator KR_function_declarator
2572	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2573	\| ptrref_operator type_qualifier_list KR_function_declarator
2574	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2575	\| '(' KR_function_ptr ')'
2576	{ $$ = $2; }
2577	;
2578
2579	KR_function_array:
2580	'(' KR_function_ptr ')' array_dimension
2581	{ $$ = $2->addArray( $4 ); }
2582	\| '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
2583	{ $$ = $2->addArray( $4 ); }
2584	\| '(' KR_function_array ')' // redundant parenthesis
2585	{ $$ = $2; }
2586	;
2587
2588	// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
2589	//
2590	// typedef int foo;
2591	// {
2592	// int foo; // redefine typedef name in new scope
2593	// }
2594	//
2595	// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2596	// and functions versus pointers to arrays and functions.
2597
2598	variable_type_redeclarator:
2599	paren_type attribute_list_opt
2600	{ $$ = $1->addQualifiers( $2 ); }
2601	\| type_ptr
2602	\| type_array attribute_list_opt
2603	{ $$ = $1->addQualifiers( $2 ); }
2604	\| type_function attribute_list_opt
2605	{ $$ = $1->addQualifiers( $2 ); }
2606	;
2607
2608	paren_type:
2609	typedef
2610	\| '(' paren_type ')'
2611	{ $$ = $2; }
2612	;
2613
2614	type_ptr:
2615	ptrref_operator variable_type_redeclarator
2616	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2617	\| ptrref_operator type_qualifier_list variable_type_redeclarator
2618	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2619	\| '(' type_ptr ')' attribute_list_opt
2620	{ $$ = $2->addQualifiers( $4 ); }
2621	;
2622
2623	type_array:
2624	paren_type array_dimension
2625	{ $$ = $1->addArray( $2 ); }
2626	\| '(' type_ptr ')' array_dimension
2627	{ $$ = $2->addArray( $4 ); }
2628	\| '(' type_array ')' multi_array_dimension // redundant parenthesis
2629	{ $$ = $2->addArray( $4 ); }
2630	\| '(' type_array ')' // redundant parenthesis
2631	{ $$ = $2; }
2632	;
2633
2634	type_function:
2635	paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2636	{ $$ = $1->addParamList( $4 ); }
2637	\| '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2638	{ $$ = $2->addParamList( $6 ); }
2639	\| '(' type_function ')' // redundant parenthesis
2640	{ $$ = $2; }
2641	;
2642
2643	// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
2644	// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
2645	// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
2646	// pointers to arrays and functions.
2647
2648	identifier_parameter_declarator:
2649	paren_identifier attribute_list_opt
2650	{ $$ = $1->addQualifiers( $2 ); }
2651	\| identifier_parameter_ptr
2652	\| identifier_parameter_array attribute_list_opt
2653	{ $$ = $1->addQualifiers( $2 ); }
2654	\| identifier_parameter_function attribute_list_opt
2655	{ $$ = $1->addQualifiers( $2 ); }
2656	;
2657
2658	identifier_parameter_ptr:
2659	ptrref_operator identifier_parameter_declarator
2660	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2661	\| ptrref_operator type_qualifier_list identifier_parameter_declarator
2662	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2663	\| '(' identifier_parameter_ptr ')' attribute_list_opt
2664	{ $$ = $2->addQualifiers( $4 ); }
2665	;
2666
2667	identifier_parameter_array:
2668	paren_identifier array_parameter_dimension
2669	{ $$ = $1->addArray( $2 ); }
2670	\| '(' identifier_parameter_ptr ')' array_dimension
2671	{ $$ = $2->addArray( $4 ); }
2672	\| '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
2673	{ $$ = $2->addArray( $4 ); }
2674	\| '(' identifier_parameter_array ')' // redundant parenthesis
2675	{ $$ = $2; }
2676	;
2677
2678	identifier_parameter_function:
2679	paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2680	{ $$ = $1->addParamList( $4 ); }
2681	\| '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2682	{ $$ = $2->addParamList( $6 ); }
2683	\| '(' identifier_parameter_function ')' // redundant parenthesis
2684	{ $$ = $2; }
2685	;
2686
2687	// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
2688	// e.g.:
2689	//
2690	// typedef int foo;
2691	// int f( int foo ); // redefine typedef name in new scope
2692	//
2693	// and allows the C99 array options, which can only appear in a parameter list.
2694
2695	type_parameter_redeclarator:
2696	typedef attribute_list_opt
2697	{ $$ = $1->addQualifiers( $2 ); }
2698	\| type_parameter_ptr
2699	\| type_parameter_array attribute_list_opt
2700	{ $$ = $1->addQualifiers( $2 ); }
2701	\| type_parameter_function attribute_list_opt
2702	{ $$ = $1->addQualifiers( $2 ); }
2703	;
2704
2705	typedef:
2706	TYPEDEFname
2707	{
2708	typedefTable.setNextIdentifier( *$1 );
2709	$$ = DeclarationNode::newName( $1 );
2710	}
2711	\| TYPEGENname
2712	{
2713	typedefTable.setNextIdentifier( *$1 );
2714	$$ = DeclarationNode::newName( $1 );
2715	}
2716	;
2717
2718	type_parameter_ptr:
2719	ptrref_operator type_parameter_redeclarator
2720	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2721	\| ptrref_operator type_qualifier_list type_parameter_redeclarator
2722	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2723	\| '(' type_parameter_ptr ')' attribute_list_opt
2724	{ $$ = $2->addQualifiers( $4 ); }
2725	;
2726
2727	type_parameter_array:
2728	typedef array_parameter_dimension
2729	{ $$ = $1->addArray( $2 ); }
2730	\| '(' type_parameter_ptr ')' array_parameter_dimension
2731	{ $$ = $2->addArray( $4 ); }
2732	;
2733
2734	type_parameter_function:
2735	typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2736	{ $$ = $1->addParamList( $4 ); }
2737	\| '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2738	{ $$ = $2->addParamList( $6 ); }
2739	;
2740
2741	// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
2742	// which the type applies, e.g.:
2743	//
2744	// sizeof( int );
2745	// sizeof( int * );
2746	// sizeof( int [10] );
2747	// sizeof( int (*)() );
2748	// sizeof( int () );
2749	//
2750	// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2751	// and functions versus pointers to arrays and functions.
2752
2753	abstract_declarator:
2754	abstract_ptr
2755	\| abstract_array attribute_list_opt
2756	{ $$ = $1->addQualifiers( $2 ); }
2757	\| abstract_function attribute_list_opt
2758	{ $$ = $1->addQualifiers( $2 ); }
2759	;
2760
2761	abstract_ptr:
2762	ptrref_operator
2763	{ $$ = DeclarationNode::newPointer( 0, $1 ); }
2764	\| ptrref_operator type_qualifier_list
2765	{ $$ = DeclarationNode::newPointer( $2, $1 ); }
2766	\| ptrref_operator abstract_declarator
2767	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2768	\| ptrref_operator type_qualifier_list abstract_declarator
2769	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2770	\| '(' abstract_ptr ')' attribute_list_opt
2771	{ $$ = $2->addQualifiers( $4 ); }
2772	;
2773
2774	abstract_array:
2775	array_dimension
2776	\| '(' abstract_ptr ')' array_dimension
2777	{ $$ = $2->addArray( $4 ); }
2778	\| '(' abstract_array ')' multi_array_dimension // redundant parenthesis
2779	{ $$ = $2->addArray( $4 ); }
2780	\| '(' abstract_array ')' // redundant parenthesis
2781	{ $$ = $2; }
2782	;
2783
2784	abstract_function:
2785	'(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2786	{ $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
2787	\| '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2788	{ $$ = $2->addParamList( $6 ); }
2789	\| '(' abstract_function ')' // redundant parenthesis
2790	{ $$ = $2; }
2791	;
2792
2793	array_dimension:
2794	// Only the first dimension can be empty.
2795	'[' ']'
2796	{ $$ = DeclarationNode::newArray( 0, 0, false ); }
2797	\| '[' ']' multi_array_dimension
2798	{ $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
2799	\| multi_array_dimension
2800	;
2801
2802	multi_array_dimension:
2803	'[' push assignment_expression pop ']'
2804	{ $$ = DeclarationNode::newArray( $3, 0, false ); }
2805	\| '[' push '*' pop ']' // C99
2806	{ $$ = DeclarationNode::newVarArray( 0 ); }
2807	\| multi_array_dimension '[' push assignment_expression pop ']'
2808	{ $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
2809	\| multi_array_dimension '[' push '*' pop ']' // C99
2810	{ $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
2811	;
2812
2813	// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
2814	// identifier to which the type applies, e.g.:
2815	//
2816	// int f( int ); // not handled here
2817	// int f( int * ); // abstract function-prototype parameter; no parameter name specified
2818	// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
2819	// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
2820	//
2821	// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2822	// and functions versus pointers to arrays and functions. In addition, the pattern handles the
2823	// special meaning of parenthesis around a typedef name:
2824	//
2825	// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
2826	// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
2827	// not as redundant parentheses around the identifier."
2828	//
2829	// For example:
2830	//
2831	// typedef float T;
2832	// int f( int ( T [5] ) ); // see abstract_parameter_declarator
2833	// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
2834	// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
2835	// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
2836	//
2837	// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
2838	// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
2839	// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
2840	// functions.
2841
2842	abstract_parameter_declarator:
2843	abstract_parameter_ptr
2844	\| abstract_parameter_array attribute_list_opt
2845	{ $$ = $1->addQualifiers( $2 ); }
2846	\| abstract_parameter_function attribute_list_opt
2847	{ $$ = $1->addQualifiers( $2 ); }
2848	;
2849
2850	abstract_parameter_ptr:
2851	ptrref_operator
2852	{ $$ = DeclarationNode::newPointer( nullptr, $1 ); }
2853	\| ptrref_operator type_qualifier_list
2854	{ $$ = DeclarationNode::newPointer( $2, $1 ); }
2855	\| ptrref_operator abstract_parameter_declarator
2856	{ $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
2857	\| ptrref_operator type_qualifier_list abstract_parameter_declarator
2858	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2859	\| '(' abstract_parameter_ptr ')' attribute_list_opt
2860	{ $$ = $2->addQualifiers( $4 ); }
2861	;
2862
2863	abstract_parameter_array:
2864	array_parameter_dimension
2865	\| '(' abstract_parameter_ptr ')' array_parameter_dimension
2866	{ $$ = $2->addArray( $4 ); }
2867	\| '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
2868	{ $$ = $2->addArray( $4 ); }
2869	\| '(' abstract_parameter_array ')' // redundant parenthesis
2870	{ $$ = $2; }
2871	;
2872
2873	abstract_parameter_function:
2874	'(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2875	{ $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
2876	\| '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2877	{ $$ = $2->addParamList( $6 ); }
2878	\| '(' abstract_parameter_function ')' // redundant parenthesis
2879	{ $$ = $2; }
2880	;
2881
2882	array_parameter_dimension:
2883	// Only the first dimension can be empty or have qualifiers.
2884	array_parameter_1st_dimension
2885	\| array_parameter_1st_dimension multi_array_dimension
2886	{ $$ = $1->addArray( $2 ); }
2887	\| multi_array_dimension
2888	;
2889
2890	// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
2891	//
2892	// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
2893	// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
2894
2895	array_parameter_1st_dimension:
2896	'[' ']'
2897	{ $$ = DeclarationNode::newArray( 0, 0, false ); }
2898	// multi_array_dimension handles the '[' '*' ']' case
2899	\| '[' push type_qualifier_list '*' pop ']' // remaining C99
2900	{ $$ = DeclarationNode::newVarArray( $3 ); }
2901	\| '[' push type_qualifier_list pop ']'
2902	{ $$ = DeclarationNode::newArray( 0, $3, false ); }
2903	// multi_array_dimension handles the '[' assignment_expression ']' case
2904	\| '[' push type_qualifier_list assignment_expression pop ']'
2905	{ $$ = DeclarationNode::newArray( $4, $3, false ); }
2906	\| '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
2907	{ $$ = DeclarationNode::newArray( $5, $4, true ); }
2908	\| '[' push type_qualifier_list STATIC assignment_expression pop ']'
2909	{ $$ = DeclarationNode::newArray( $5, $3, true ); }
2910	;
2911
2912	// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
2913	//
2914	// struct S {
2915	// int;
2916	// int *;
2917	// int [10];
2918	// int (*)();
2919	// };
2920
2921	variable_abstract_declarator:
2922	variable_abstract_ptr
2923	\| variable_abstract_array attribute_list_opt
2924	{ $$ = $1->addQualifiers( $2 ); }
2925	\| variable_abstract_function attribute_list_opt
2926	{ $$ = $1->addQualifiers( $2 ); }
2927	;
2928
2929	variable_abstract_ptr:
2930	ptrref_operator
2931	{ $$ = DeclarationNode::newPointer( 0, $1 ); }
2932	\| ptrref_operator type_qualifier_list
2933	{ $$ = DeclarationNode::newPointer( $2, $1 ); }
2934	\| ptrref_operator variable_abstract_declarator
2935	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2936	\| ptrref_operator type_qualifier_list variable_abstract_declarator
2937	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
2938	\| '(' variable_abstract_ptr ')' attribute_list_opt
2939	{ $$ = $2->addQualifiers( $4 ); }
2940	;
2941
2942	variable_abstract_array:
2943	array_dimension
2944	\| '(' variable_abstract_ptr ')' array_dimension
2945	{ $$ = $2->addArray( $4 ); }
2946	\| '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
2947	{ $$ = $2->addArray( $4 ); }
2948	\| '(' variable_abstract_array ')' // redundant parenthesis
2949	{ $$ = $2; }
2950	;
2951
2952	variable_abstract_function:
2953	'(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2954	{ $$ = $2->addParamList( $6 ); }
2955	\| '(' variable_abstract_function ')' // redundant parenthesis
2956	{ $$ = $2; }
2957	;
2958
2959	// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
2960	// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
2961
2962	cfa_identifier_parameter_declarator_tuple: // CFA
2963	cfa_identifier_parameter_declarator_no_tuple
2964	\| cfa_abstract_tuple
2965	\| type_qualifier_list cfa_abstract_tuple
2966	{ $$ = $2->addQualifiers( $1 ); }
2967	;
2968
2969	cfa_identifier_parameter_declarator_no_tuple: // CFA
2970	cfa_identifier_parameter_ptr
2971	\| cfa_identifier_parameter_array
2972	;
2973
2974	cfa_identifier_parameter_ptr: // CFA
2975	// No SUE declaration in parameter list.
2976	ptrref_operator type_specifier_nobody
2977	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2978	\| type_qualifier_list ptrref_operator type_specifier_nobody
2979	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
2980	\| ptrref_operator cfa_abstract_function
2981	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2982	\| type_qualifier_list ptrref_operator cfa_abstract_function
2983	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
2984	\| ptrref_operator cfa_identifier_parameter_declarator_tuple
2985	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
2986	\| type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
2987	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
2988	;
2989
2990	cfa_identifier_parameter_array: // CFA
2991	// Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
2992	// shift/reduce conflict with new-style empty (void) function return type.
2993	'[' ']' type_specifier_nobody
2994	{ $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2995	\| cfa_array_parameter_1st_dimension type_specifier_nobody
2996	{ $$ = $2->addNewArray( $1 ); }
2997	\| '[' ']' multi_array_dimension type_specifier_nobody
2998	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2999	\| cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
3000	{ $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
3001	\| multi_array_dimension type_specifier_nobody
3002	{ $$ = $2->addNewArray( $1 ); }
3003
3004	\| '[' ']' cfa_identifier_parameter_ptr
3005	{ $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
3006	\| cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
3007	{ $$ = $2->addNewArray( $1 ); }
3008	\| '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
3009	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
3010	\| cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
3011	{ $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
3012	\| multi_array_dimension cfa_identifier_parameter_ptr
3013	{ $$ = $2->addNewArray( $1 ); }
3014	;
3015
3016	cfa_array_parameter_1st_dimension:
3017	'[' push type_qualifier_list '*' pop ']' // remaining C99
3018	{ $$ = DeclarationNode::newVarArray( $3 ); }
3019	\| '[' push type_qualifier_list assignment_expression pop ']'
3020	{ $$ = DeclarationNode::newArray( $4, $3, false ); }
3021	\| '[' push declaration_qualifier_list assignment_expression pop ']'
3022	// declaration_qualifier_list must be used because of shift/reduce conflict with
3023	// assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3024	// appear in this context.
3025	{ $$ = DeclarationNode::newArray( $4, $3, true ); }
3026	\| '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3027	{ $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
3028	;
3029
3030	// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3031	// identifier to which the type applies, e.g.:
3032	//
3033	// [int] f( int ); // abstract variable parameter; no parameter name specified
3034	// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
3035	//
3036	// These rules need LR(3):
3037	//
3038	// cfa_abstract_tuple identifier_or_type_name
3039	// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_type_list_opt ')'
3040	//
3041	// since a function return type can be syntactically identical to a tuple type:
3042	//
3043	// [int, int] t;
3044	// [int, int] f( int );
3045	//
3046	// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
3047	// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3048	// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3049	// duplicated when appearing with cfa_function_specifier.
3050
3051	cfa_abstract_declarator_tuple: // CFA
3052	cfa_abstract_tuple
3053	\| type_qualifier_list cfa_abstract_tuple
3054	{ $$ = $2->addQualifiers( $1 ); }
3055	\| cfa_abstract_declarator_no_tuple
3056	;
3057
3058	cfa_abstract_declarator_no_tuple: // CFA
3059	cfa_abstract_ptr
3060	\| cfa_abstract_array
3061	;
3062
3063	cfa_abstract_ptr: // CFA
3064	ptrref_operator type_specifier
3065	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
3066	\| type_qualifier_list ptrref_operator type_specifier
3067	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
3068	\| ptrref_operator cfa_abstract_function
3069	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
3070	\| type_qualifier_list ptrref_operator cfa_abstract_function
3071	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
3072	\| ptrref_operator cfa_abstract_declarator_tuple
3073	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
3074	\| type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
3075	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
3076	;
3077
3078	cfa_abstract_array: // CFA
3079	// Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3080	// empty (void) function return type.
3081	'[' ']' type_specifier
3082	{ $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
3083	\| '[' ']' multi_array_dimension type_specifier
3084	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
3085	\| multi_array_dimension type_specifier
3086	{ $$ = $2->addNewArray( $1 ); }
3087	\| '[' ']' cfa_abstract_ptr
3088	{ $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
3089	\| '[' ']' multi_array_dimension cfa_abstract_ptr
3090	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
3091	\| multi_array_dimension cfa_abstract_ptr
3092	{ $$ = $2->addNewArray( $1 ); }
3093	;
3094
3095	cfa_abstract_tuple: // CFA
3096	'[' push cfa_abstract_parameter_list pop ']'
3097	{ $$ = DeclarationNode::newTuple( $3 ); }
3098	;
3099
3100	cfa_abstract_function: // CFA
3101	// '[' ']' '(' cfa_parameter_type_list_opt ')'
3102	// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
3103	cfa_abstract_tuple '(' push cfa_parameter_type_list_opt pop ')'
3104	{ $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
3105	\| cfa_function_return '(' push cfa_parameter_type_list_opt pop ')'
3106	{ $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
3107	;
3108
3109	// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3110	// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
3111	//
3112	// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3113	// the declaration specifiers in a declaration is an obsolescent feature."
3114	//
3115	// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3116	// prototype-format parameter type declarators) is an obsolescent feature."
3117	//
3118	// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3119	// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
3120
3121	//*********************** MISCELLANEOUS ******************************
3122
3123	comma_opt: // redundant comma
3124	// empty
3125	\| ','
3126	;
3127
3128	default_initialize_opt:
3129	// empty
3130	{ $$ = nullptr; }
3131	\| '=' assignment_expression
3132	{ $$ = $2; }
3133	;
3134
3135	%%
3136	// ----end of grammar----
3137
3138	// Local Variables: //
3139	// mode: c++ //
3140	// tab-width: 4 //
3141	// compile-command: "make install" //
3142	// End: //

Note: See TracBrowser for help on using the repository browser.

Download in other formats:

Original Format