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parser.yy @ 20e409e

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Last change on this file since 20e409e was 51b1202, checked in by Peter A. Buhr <pabuhr@…>, 9 years ago
move constant/string to unary_expression, temporarily separate asm and local label, introduce DesignatorNode?
Property mode set to `100644`
File size: 100.6 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	// cfa.y --
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 : Tue Aug 11 16:01:49 2015
13	// Update Count : 1350
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. nested functions
34	// 2. generalized lvalues
35	// 3. designation with and without '=' (use ':' instead)
36	// 4. attributes not allowed in parenthesis of declarator
37	//
38	// All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall
39	// (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the
40	// syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable
41	// parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation"
42	// grammar rule.
43
44	%{
45	#define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time
46	#define YYDEBUG 1 // get the pretty debugging code to compile
47	extern char *yytext;
48
49	#undef __GNUC_MINOR__
50
51	#include <cstdio>
52	#include <stack>
53	#include "TypedefTable.h"
54	#include "lex.h"
55	#include "ParseNode.h"
56	#include "TypeData.h"
57	#include "LinkageSpec.h"
58
59	DeclarationNode *theTree = 0; // the resulting parse tree
60	LinkageSpec::Type linkage = LinkageSpec::Cforall;
61	std::stack< LinkageSpec::Type > linkageStack;
62	TypedefTable typedefTable;
63	%}
64
65	//*********************** TERMINAL TOKENS ******************************
66
67	// keywords
68	%token TYPEDEF
69	%token AUTO EXTERN REGISTER STATIC
70	%token INLINE // C99
71	%token FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
72	%token CONST VOLATILE
73	%token RESTRICT // C99
74	%token FORALL LVALUE // CFA
75	%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
76	%token BOOL COMPLEX IMAGINARY // C99
77	%token TYPEOF LABEL // GCC
78	%token ENUM STRUCT UNION
79	%token TYPE FTYPE DTYPE CONTEXT // CFA
80	%token SIZEOF
81	%token ATTRIBUTE EXTENSION // GCC
82	%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
83	%token CHOOSE FALLTHRU TRY CATCH FINALLY THROW // CFA
84	%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
85	%token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL // C11
86
87	// names and constants: lexer differentiates between identifier and typedef names
88	%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname
89	%token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname
90	%token<tok> INTEGERconstant FLOATINGconstant CHARACTERconstant STRINGliteral
91	%token<tok> ZERO ONE // CFA
92
93	// multi-character operators
94	%token ARROW // ->
95	%token ICR DECR // ++ --
96	%token LS RS // << >>
97	%token LE GE EQ NE // <= >= == !=
98	%token ANDAND OROR // && \|\|
99	%token ELLIPSIS // ...
100
101	%token MULTassign DIVassign MODassign // *= /= %=/
102	%token PLUSassign MINUSassign // += -=
103	%token LSassign RSassign // <<= >>=
104	%token ANDassign ERassign ORassign // &= ^= \|=
105
106	// Types declaration
107	%union
108	{
109	Token tok;
110	ParseNode *pn;
111	ExpressionNode *en;
112	DeclarationNode *decl;
113	DeclarationNode::Aggregate aggKey;
114	DeclarationNode::TypeClass tclass;
115	StatementNode *sn;
116	ConstantNode *constant;
117	LabelNode *label;
118	InitializerNode *in;
119	bool flag;
120	}
121
122	%type<tok> zero_one identifier no_attr_identifier no_01_identifier
123	%type<tok> identifier_or_type_name no_attr_identifier_or_type_name no_01_identifier_or_type_name
124	%type<constant> string_literal_list
125
126	// expressions
127	%type<constant> constant
128	%type<en> tuple tuple_expression_list
129	%type<en> unary_operator assignment_operator
130	%type<en> primary_expression postfix_expression unary_expression
131	%type<en> cast_expression multiplicative_expression additive_expression shift_expression
132	%type<en> relational_expression equality_expression AND_expression exclusive_OR_expression
133	%type<en> inclusive_OR_expression logical_AND_expression logical_OR_expression conditional_expression
134	%type<en> constant_expression assignment_expression assignment_expression_opt
135	%type<en> comma_expression comma_expression_opt
136	%type<en> argument_expression_list argument_expression for_control_expression assignment_opt
137	%type<en> subrange
138	%type<en> asm_operands_opt asm_operands_list asm_operand
139	%type<label> label_list
140	%type<constant> asm_clobbers_list_opt
141	%type<flag> asm_volatile_opt
142
143	// statements
144	%type<sn> labeled_statement compound_statement expression_statement selection_statement
145	%type<sn> iteration_statement jump_statement exception_statement asm_statement
146	%type<sn> fall_through_opt fall_through
147	%type<sn> statement statement_list
148	%type<sn> block_item_list block_item
149	%type<sn> case_clause
150	%type<en> case_value case_value_list
151	%type<sn> case_label case_label_list
152	%type<sn> switch_clause_list_opt switch_clause_list choose_clause_list_opt choose_clause_list
153	%type<pn> handler_list handler_clause finally_clause
154
155	// declarations
156	%type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array
157	%type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function
158	%type<decl> abstract_parameter_ptr abstract_ptr
159
160	%type<aggKey> aggregate_key
161	%type<decl> aggregate_name
162
163	%type<decl> array_dimension array_parameter_1st_dimension array_parameter_dimension multi_array_dimension
164
165	%type<decl> assertion assertion_list_opt
166
167	%type<en> bit_subrange_size_opt bit_subrange_size
168
169	%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type_name indirect_type_name
170
171	%type<decl> context_declaration context_declaration_list context_declaring_list context_specifier
172
173	%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
174	%type<decl> declaration_specifier declarator declaring_list
175
176	%type<decl> elaborated_type_name
177
178	%type<decl> enumerator_list enum_name
179	%type<en> enumerator_value_opt
180
181	%type<decl> exception_declaration external_definition external_definition_list external_definition_list_opt
182
183	%type<decl> field_declaration field_declaration_list field_declarator field_declaring_list
184	%type<en> field field_list
185
186	%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
187
188	%type<decl> identifier_parameter_array identifier_parameter_declarator identifier_parameter_function
189	%type<decl> identifier_parameter_ptr identifier_list
190
191	%type<decl> new_abstract_array new_abstract_declarator_no_tuple new_abstract_declarator_tuple
192	%type<decl> new_abstract_function new_abstract_parameter_declaration new_abstract_parameter_list
193	%type<decl> new_abstract_ptr new_abstract_tuple
194
195	%type<decl> new_array_parameter_1st_dimension
196
197	%type<decl> new_context_declaring_list new_declaration new_field_declaring_list
198	%type<decl> new_function_declaration new_function_return new_function_specifier
199
200	%type<decl> new_identifier_parameter_array new_identifier_parameter_declarator_no_tuple
201	%type<decl> new_identifier_parameter_declarator_tuple new_identifier_parameter_ptr
202
203	%type<decl> new_parameter_declaration new_parameter_list new_parameter_type_list new_parameter_type_list_opt
204
205	%type<decl> new_typedef_declaration new_variable_declaration new_variable_specifier
206
207	%type<decl> old_declaration old_declaration_list old_declaration_list_opt old_function_array
208	%type<decl> old_function_declarator old_function_no_ptr old_function_ptr
209
210	%type<decl> parameter_declaration parameter_list parameter_type_list
211	%type<decl> parameter_type_list_opt
212
213	%type<decl> paren_identifier paren_type
214
215	%type<decl> storage_class storage_class_name storage_class_list
216
217	%type<decl> sue_declaration_specifier sue_type_specifier
218
219	%type<tclass> type_class
220	%type<decl> type_declarator type_declarator_name type_declaring_list
221
222	%type<decl> typedef type_array typedef_declaration typedef_declaration_specifier typedef_expression
223	%type<decl> type_function type_parameter_array type_parameter_function type_parameter_ptr
224	%type<decl> type_parameter_redeclarator type_ptr type_redeclarator typedef_type_specifier
225	%type<decl> typegen_declaration_specifier typegen_type_specifier typegen_name
226
227	%type<decl> type_name type_name_no_function
228	%type<decl> type_parameter type_parameter_list
229
230	%type<en> type_name_list
231
232	%type<decl> type_qualifier type_qualifier_name type_qualifier_list type_qualifier_list_opt type_specifier
233
234	%type<decl> variable_abstract_array variable_abstract_declarator variable_abstract_function
235	%type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr
236
237	%type<decl> attribute_list_opt attribute_list attribute
238
239	// initializers
240	%type<in> initializer initializer_list initializer_opt
241
242	// designators
243	%type<en> designator designator_list designation
244
245
246	// Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string
247	// is ambiguous:
248	// .---------. matches IF '(' comma_expression ')' statement
249	// if ( C ) S1 else S2
250	// `-----------------' matches IF '(' comma_expression ')' statement ELSE statement */
251
252	%nonassoc THEN // rule precedence for IF '(' comma_expression ')' statement
253	%nonassoc ELSE // token precedence for start of else clause in IF statement
254
255	%start translation_unit // parse-tree root
256
257	%%
258	//*********************** Namespace Management ******************************
259
260	// The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols
261	// "identifier" and "TYPEDEFname" that are lexically identical. While it is possible to write a purely context-free
262	// grammar, such a grammar would obscure the relationship between syntactic and semantic constructs. Hence, this
263	// grammar uses the ANSI style.
264	//
265	// Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those
266	// introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types. This latter
267	// type name creates a third class of identifiers that must be distinguished by the scanner.
268	//
269	// Since the scanner cannot distinguish among the different classes of identifiers without some context information, it
270	// accesses a data structure (the TypedefTable) to allow classification of an identifier that it has just read.
271	// Semantic actions during the parser update this data structure when the class of identifiers change.
272	//
273	// Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a
274	// local scope; it must revert to its original class at the end of the block. Since type names can be local to a
275	// particular declaration, each declaration is itself a scope. This requires distinguishing between type names that are
276	// local to the current declaration scope and those that persist past the end of the declaration (i.e., names defined in
277	// "typedef" or "type" declarations).
278	//
279	// The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and closing of
280	// scopes. Every push must have a matching pop, although it is regrettable the matching pairs do not always occur
281	// within the same rule. These non-terminals may appear in more contexts than strictly necessary from a semantic point
282	// of view. Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have
283	// enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra
284	// rules is to open a new scope unconditionally. As the grammar evolves, it may be neccesary to add or move around
285	// "push" and "pop" nonterminals to resolve conflicts of this sort.
286
287	push:
288	{
289	typedefTable.enterScope();
290	}
291	;
292
293	pop:
294	{
295	typedefTable.leaveScope();
296	}
297	;
298
299	//*********************** CONSTANTS ******************************
300
301	constant:
302	// ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
303	INTEGERconstant { $$ = new ConstantNode( ConstantNode::Integer, $1 ); }
304	\| FLOATINGconstant { $$ = new ConstantNode( ConstantNode::Float, $1 ); }
305	\| CHARACTERconstant { $$ = new ConstantNode( ConstantNode::Character, $1 ); }
306	;
307
308	identifier:
309	IDENTIFIER
310	\| ATTR_IDENTIFIER // CFA
311	\| zero_one // CFA
312	;
313
314	no_01_identifier:
315	IDENTIFIER
316	\| ATTR_IDENTIFIER // CFA
317	;
318
319	no_attr_identifier:
320	IDENTIFIER
321	;
322
323	zero_one: // CFA
324	ZERO
325	\| ONE
326	;
327
328	string_literal_list: // juxtaposed strings are concatenated
329	STRINGliteral { $$ = new ConstantNode( ConstantNode::String, $1 ); }
330	\| string_literal_list STRINGliteral { $$ = $1->appendstr( $2 ); }
331	;
332
333	//*********************** EXPRESSIONS ******************************
334
335	primary_expression:
336	IDENTIFIER // typedef name cannot be used as a variable name
337	{ $$ = new VarRefNode( $1 ); }
338	\| zero_one
339	{ $$ = new VarRefNode( $1 ); }
340	\| '(' comma_expression ')'
341	{ $$ = $2; }
342	\| '(' compound_statement ')' // GCC, lambda expression
343	{ $$ = new ValofExprNode( $2 ); }
344	;
345
346	postfix_expression:
347	primary_expression
348	\| postfix_expression '[' push assignment_expression pop ']'
349	// CFA, comma_expression disallowed in the context because it results in a commom user error: subscripting a
350	// matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
351	// little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
352	// equivalent to the old x[i,j].
353	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Index ), $1, $4 ); }
354	\| postfix_expression '(' argument_expression_list ')'
355	{ $$ = new CompositeExprNode( $1, $3 ); }
356	\| postfix_expression '.' no_attr_identifier
357	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), $1, new VarRefNode( $3 )); }
358	\| postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector
359	\| postfix_expression ARROW no_attr_identifier
360	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), $1, new VarRefNode( $3 )); }
361	\| postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector
362	\| postfix_expression ICR
363	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::IncrPost ), $1 ); }
364	\| postfix_expression DECR
365	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::DecrPost ), $1 ); }
366	// GCC has priority: cast_expression
367	\| '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99
368	{ $$ = 0; }
369	;
370
371	argument_expression_list:
372	argument_expression
373	\| argument_expression_list ',' argument_expression
374	{ $$ = (ExpressionNode *)( $1->set_link( $3 )); }
375	;
376
377	argument_expression:
378	// empty
379	{ $$ = 0; } // use default argument
380	\| assignment_expression
381	\| no_attr_identifier ':' assignment_expression
382	{ $$ = $3->set_argName( $1 ); }
383	// Only a list of no_attr_identifier_or_type_name is allowed in this context. However, there is insufficient
384	// look ahead to distinguish between this list of parameter names and a tuple, so the tuple form must be used
385	// with an appropriate semantic check.
386	\| '[' push assignment_expression pop ']' ':' assignment_expression
387	{ $$ = $7->set_argName( $3 ); }
388	\| '[' push assignment_expression ',' tuple_expression_list pop ']' ':' assignment_expression
389	{ $$ = $9->set_argName( new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); }
390	;
391
392	field_list: // CFA, tuple field selector
393	field
394	\| field_list ',' field { $$ = (ExpressionNode *)$1->set_link( $3 ); }
395	;
396
397	field: // CFA, tuple field selector
398	no_attr_identifier
399	{ $$ = new VarRefNode( $1 ); }
400	\| no_attr_identifier '.' field
401	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $3 ); }
402	\| no_attr_identifier '.' '[' push field_list pop ']'
403	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::FieldSel ), new VarRefNode( $1 ), $5 ); }
404	\| no_attr_identifier ARROW field
405	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $3 ); }
406	\| no_attr_identifier ARROW '[' push field_list pop ']'
407	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PFieldSel ), new VarRefNode( $1 ), $5 ); }
408	;
409
410	unary_expression:
411	postfix_expression
412	// first location where constant/string can have operator applied: sizeof 3/sizeof "abc"
413	// still requires semantics checks, e.g., ++3, 3--, *3, &&3
414	\| constant
415	{ $$ = $1; }
416	\| string_literal_list
417	{ $$ = $1; }
418	\| ICR unary_expression
419	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Incr ), $2 ); }
420	\| DECR unary_expression
421	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Decr ), $2 ); }
422	\| EXTENSION cast_expression // GCC
423	{ $$ = $2; }
424	\| unary_operator cast_expression
425	{ $$ = new CompositeExprNode( $1, $2 ); }
426	\| '!' cast_expression
427	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Neg ), $2 ); }
428	\| '*' cast_expression // CFA
429	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::PointTo ), $2 ); }
430	// '*' is is separated from unary_operator because of shift/reduce conflict in:
431	// { * X; } // dereference X
432	// { * int X; } // CFA declaration of pointer to int
433	// '&' must be moved here if C++ reference variables are supported.
434	\| SIZEOF unary_expression
435	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), $2 ); }
436	\| SIZEOF '(' type_name_no_function ')'
437	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::SizeOf ), new TypeValueNode( $3 )); }
438	\| ATTR_IDENTIFIER
439	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 )); }
440	\| ATTR_IDENTIFIER '(' type_name ')'
441	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), new TypeValueNode( $3 )); }
442	\| ATTR_IDENTIFIER '(' argument_expression ')'
443	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Attr ), new VarRefNode( $1 ), $3 ); }
444	\| ALIGNOF unary_expression // GCC, variable alignment
445	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), $2 ); }
446	\| ALIGNOF '(' type_name_no_function ')' // GCC, type alignment
447	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::AlignOf ), new TypeValueNode( $3 )); }
448	\| ANDAND no_attr_identifier // GCC, address of label
449	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LabelAddress ), new VarRefNode( $2, true )); }
450	;
451
452	unary_operator:
453	'&' { $$ = new OperatorNode( OperatorNode::AddressOf ); }
454	\| '+' { $$ = new OperatorNode( OperatorNode::UnPlus ); }
455	\| '-' { $$ = new OperatorNode( OperatorNode::UnMinus ); }
456	\| '~' { $$ = new OperatorNode( OperatorNode::BitNeg ); }
457	;
458
459	cast_expression:
460	unary_expression
461	\| '(' type_name_no_function ')' cast_expression
462	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); }
463	\| '(' type_name_no_function ')' tuple
464	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cast ), new TypeValueNode( $2 ), $4 ); }
465	;
466
467	multiplicative_expression:
468	cast_expression
469	\| multiplicative_expression '*' cast_expression
470	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mul ), $1, $3 ); }
471	\| multiplicative_expression '/' cast_expression
472	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Div ), $1, $3 ); }
473	\| multiplicative_expression '%' cast_expression
474	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Mod ), $1, $3 ); }
475	;
476
477	additive_expression:
478	multiplicative_expression
479	\| additive_expression '+' multiplicative_expression
480	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Plus ), $1, $3 ); }
481	\| additive_expression '-' multiplicative_expression
482	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Minus ), $1, $3 ); }
483	;
484
485	shift_expression:
486	additive_expression
487	\| shift_expression LS additive_expression
488	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LShift ), $1, $3 ); }
489	\| shift_expression RS additive_expression
490	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::RShift ), $1, $3 ); }
491	;
492
493	relational_expression:
494	shift_expression
495	\| relational_expression '<' shift_expression
496	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LThan ), $1, $3 ); }
497	\| relational_expression '>' shift_expression
498	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GThan ), $1, $3 ); }
499	\| relational_expression LE shift_expression
500	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::LEThan ), $1, $3 ); }
501	\| relational_expression GE shift_expression
502	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::GEThan ), $1, $3 ); }
503	;
504
505	equality_expression:
506	relational_expression
507	\| equality_expression EQ relational_expression
508	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Eq ), $1, $3 ); }
509	\| equality_expression NE relational_expression
510	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Neq ), $1, $3 ); }
511	;
512
513	AND_expression:
514	equality_expression
515	\| AND_expression '&' equality_expression
516	{ $$ =new CompositeExprNode( new OperatorNode( OperatorNode::BitAnd ), $1, $3 ); }
517	;
518
519	exclusive_OR_expression:
520	AND_expression
521	\| exclusive_OR_expression '^' AND_expression
522	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Xor ), $1, $3 ); }
523	;
524
525	inclusive_OR_expression:
526	exclusive_OR_expression
527	\| inclusive_OR_expression '\|' exclusive_OR_expression
528	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::BitOr ), $1, $3 ); }
529	;
530
531	logical_AND_expression:
532	inclusive_OR_expression
533	\| logical_AND_expression ANDAND inclusive_OR_expression
534	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::And ), $1, $3 ); }
535	;
536
537	logical_OR_expression:
538	logical_AND_expression
539	\| logical_OR_expression OROR logical_AND_expression
540	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Or ), $1, $3 ); }
541	;
542
543	conditional_expression:
544	logical_OR_expression
545	\| logical_OR_expression '?' comma_expression ':' conditional_expression
546	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode )mkList( ($1, $3, $5 ) ) ); }
547	\| logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
548	{ $$=new CompositeExprNode( new OperatorNode( OperatorNode::NCond ), $1, $4 ); }
549	\| logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression
550	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Cond ), (ExpressionNode )mkList( ($1, $3, $5 ) ) ); }
551	;
552
553	constant_expression:
554	conditional_expression
555	;
556
557	assignment_expression:
558	// CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
559	conditional_expression
560	\| unary_expression '=' assignment_expression
561	{ $$ =new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $3 ); }
562	\| unary_expression assignment_operator assignment_expression
563	{ $$ =new CompositeExprNode( $2, $1, $3 ); }
564	\| tuple assignment_opt // CFA, tuple expression
565	{ $$ = ( $2 == 0 ) ? $1 : new CompositeExprNode( new OperatorNode( OperatorNode::Assign ), $1, $2 ); }
566	;
567
568	assignment_expression_opt:
569	// empty
570	{ $$ = new NullExprNode; }
571	\| assignment_expression
572	;
573
574	tuple: // CFA, tuple
575	// CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
576	// comma_expression in new_identifier_parameter_array and new_abstract_array
577	'[' ']'
578	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ) ); }
579	\| '[' push assignment_expression pop ']'
580	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), $3 ); }
581	\| '[' push ',' tuple_expression_list pop ']'
582	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(new NullExprNode)->set_link( $4 ) ); }
583	\| '[' push assignment_expression ',' tuple_expression_list pop ']'
584	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 ) ) ); }
585	;
586
587	tuple_expression_list:
588	assignment_expression_opt
589	\| tuple_expression_list ',' assignment_expression_opt
590	{ $$ = (ExpressionNode *)$1->set_link( $3 ); }
591	;
592
593	assignment_operator:
594	MULTassign { $$ = new OperatorNode( OperatorNode::MulAssn ); }
595	\| DIVassign { $$ = new OperatorNode( OperatorNode::DivAssn ); }
596	\| MODassign { $$ = new OperatorNode( OperatorNode::ModAssn ); }
597	\| PLUSassign { $$ = new OperatorNode( OperatorNode::PlusAssn ); }
598	\| MINUSassign { $$ = new OperatorNode( OperatorNode::MinusAssn ); }
599	\| LSassign { $$ = new OperatorNode( OperatorNode::LSAssn ); }
600	\| RSassign { $$ = new OperatorNode( OperatorNode::RSAssn ); }
601	\| ANDassign { $$ = new OperatorNode( OperatorNode::AndAssn ); }
602	\| ERassign { $$ = new OperatorNode( OperatorNode::ERAssn ); }
603	\| ORassign { $$ = new OperatorNode( OperatorNode::OrAssn ); }
604	;
605
606	comma_expression:
607	assignment_expression
608	\| comma_expression ',' assignment_expression // { $$ = (ExpressionNode *)$1->add_to_list( $3 ); }
609	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Comma ), $1, $3 ); }
610	;
611
612	comma_expression_opt:
613	// empty
614	{ $$ = 0; }
615	\| comma_expression
616	;
617
618	//************************* STATEMENTS *****************************
619
620	statement:
621	labeled_statement
622	\| compound_statement
623	\| expression_statement { $$ = $1; }
624	\| selection_statement
625	\| iteration_statement
626	\| jump_statement
627	\| exception_statement
628	\| asm_statement
629	;
630
631	labeled_statement:
632	no_attr_identifier ':' attribute_list_opt statement
633	{
634	$$ = $4->add_label( $1 );
635	}
636	;
637
638	compound_statement:
639	'{' '}'
640	{ $$ = new CompoundStmtNode( (StatementNode *)0 ); }
641	\| '{'
642	// Two scopes are necessary because the block itself has a scope, but every declaration within the block also
643	// requires its own scope
644	push push
645	local_label_declaration_opt // GCC, local labels
646	block_item_list pop '}' // C99, intermix declarations and statements
647	{ $$ = new CompoundStmtNode( $5 ); }
648	;
649
650	block_item_list: // C99
651	block_item
652	\| block_item_list push block_item
653	{ if ( $1 != 0 ) { $1->set_link( $3 ); $$ = $1; } }
654	;
655
656	block_item:
657	declaration // CFA, new & old style declarations
658	{ $$ = new StatementNode( $1 ); }
659	\| EXTENSION declaration // GCC
660	{ $$ = new StatementNode( $2 ); }
661	\| function_definition
662	{ $$ = new StatementNode( $1 ); }
663	\| statement pop
664	;
665
666	statement_list:
667	statement
668	\| statement_list statement
669	{ if ( $1 != 0 ) { $1->set_link( $2 ); $$ = $1; } }
670	;
671
672	expression_statement:
673	comma_expression_opt ';'
674	{ $$ = new StatementNode( StatementNode::Exp, $1, 0 ); }
675	;
676
677	selection_statement:
678	IF '(' comma_expression ')' statement %prec THEN
679	// explicitly deal with the shift/reduce conflict on if/else
680	{ $$ = new StatementNode( StatementNode::If, $3, $5 ); }
681	\| IF '(' comma_expression ')' statement ELSE statement
682	{ $$ = new StatementNode( StatementNode::If, $3, (StatementNode )mkList(($5, *$7 )) ); }
683	\| SWITCH '(' comma_expression ')' case_clause // CFA
684	{ $$ = new StatementNode( StatementNode::Switch, $3, $5 ); }
685	\| SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA
686	{ $$ = new StatementNode( StatementNode::Switch, $3, $8 ); /* xxx */ }
687	// The semantics of the declaration list is changed to include any associated initialization, which is performed
688	// before the transfer to the appropriate case clause. Statements after the initial declaration list can
689	// never be executed, and therefore, are removed from the grammar even though C allows it.
690	\| CHOOSE '(' comma_expression ')' case_clause // CFA
691	{ $$ = new StatementNode( StatementNode::Choose, $3, $5 ); }
692	\| CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA
693	{ $$ = new StatementNode( StatementNode::Choose, $3, $8 ); }
694	;
695
696	// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
697	// clause allows a list of values and subranges.
698
699	case_value: // CFA
700	constant_expression { $$ = $1; }
701	\| constant_expression ELLIPSIS constant_expression // GCC, subrange
702	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); }
703	\| subrange // CFA, subrange
704	;
705
706	case_value_list: // CFA
707	case_value
708	\| case_value_list ',' case_value
709	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)(tupleContents( $1 ))->set_link( $3 ) ); }
710	;
711
712	case_label: // CFA
713	CASE case_value_list ':' { $$ = new StatementNode( StatementNode::Case, $2, 0 ); }
714	\| DEFAULT ':' { $$ = new StatementNode( StatementNode::Default ); }
715	// A semantic check is required to ensure only one default clause per switch/choose statement.
716	;
717
718	case_label_list: // CFA
719	case_label
720	\| case_label_list case_label { $$ = (StatementNode *)( $1->set_link( $2 )); }
721	;
722
723	case_clause: // CFA
724	case_label_list statement { $$ = $1->append_last_case( $2 ); }
725	;
726
727	switch_clause_list_opt: // CFA
728	// empty
729	{ $$ = 0; }
730	\| switch_clause_list
731	;
732
733	switch_clause_list: // CFA
734	case_label_list statement_list
735	{ $$ = $1->append_last_case( $2 ); }
736	\| switch_clause_list case_label_list statement_list
737	{ $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); }
738	;
739
740	choose_clause_list_opt: // CFA
741	// empty
742	{ $$ = 0; }
743	\| choose_clause_list
744	;
745
746	choose_clause_list: // CFA
747	case_label_list fall_through
748	{ $$ = $1->append_last_case( $2 ); }
749	\| case_label_list statement_list fall_through_opt
750	{ $$ = $1->append_last_case((StatementNode )mkList(($2,*$3 ))); }
751	\| choose_clause_list case_label_list fall_through
752	{ $$ = (StatementNode *)( $1->set_link( $2->append_last_case( $3 ))); }
753	\| choose_clause_list case_label_list statement_list fall_through_opt
754	{ $$ = (StatementNode )( $1->set_link( $2->append_last_case((StatementNode )mkList(($3,$4 ))))); }
755	;
756
757	fall_through_opt: // CFA
758	// empty
759	{ $$ = 0; }
760	\| fall_through
761	;
762
763	fall_through: // CFA
764	FALLTHRU { $$ = new StatementNode( StatementNode::Fallthru ); }
765	\| FALLTHRU ';' { $$ = new StatementNode( StatementNode::Fallthru ); }
766	;
767
768	iteration_statement:
769	WHILE '(' comma_expression ')' statement
770	{ $$ = new StatementNode( StatementNode::While, $3, $5 ); }
771	\| DO statement WHILE '(' comma_expression ')' ';'
772	{ $$ = new StatementNode( StatementNode::Do, $5, $2 ); }
773	\| FOR '(' push for_control_expression ')' statement
774	{ $$ = new StatementNode( StatementNode::For, $4, $6 ); }
775	;
776
777	for_control_expression:
778	comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt
779	{ $$ = new ForCtlExprNode( $1, $4, $6 ); }
780	\| declaration comma_expression_opt ';' comma_expression_opt // C99
781	{ $$ = new ForCtlExprNode( $1, $2, $4 ); }
782	;
783
784	jump_statement:
785	GOTO no_attr_identifier ';'
786	{ $$ = new StatementNode( StatementNode::Goto, $2 ); }
787	\| GOTO '*' comma_expression ';' // GCC, computed goto
788	// The syntax for the GCC computed goto violates normal expression precedence, e.g., goto i+3; => goto (i+3 );
789	// whereas normal operator precedence yields goto (*i)+3;
790	{ $$ = new StatementNode( StatementNode::Goto, $3 ); }
791	\| CONTINUE ';'
792	// A semantic check is required to ensure this statement appears only in the body of an iteration statement.
793	{ $$ = new StatementNode( StatementNode::Continue ); }
794	\| CONTINUE no_attr_identifier ';' // CFA, multi-level continue
795	// A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
796	// the target of the transfer appears only at the start of an iteration statement.
797	{ $$ = new StatementNode( StatementNode::Continue, $2 ); }
798	\| BREAK ';'
799	// A semantic check is required to ensure this statement appears only in the body of an iteration statement.
800	{ $$ = new StatementNode( StatementNode::Break ); }
801	\| BREAK no_attr_identifier ';' // CFA, multi-level exit
802	// A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
803	// the target of the transfer appears only at the start of an iteration statement.
804	{ $$ = new StatementNode( StatementNode::Break, $2 ); }
805	\| RETURN comma_expression_opt ';'
806	{ $$ = new StatementNode( StatementNode::Return, $2, 0 ); }
807	\| THROW assignment_expression ';'
808	{ $$ = new StatementNode( StatementNode::Throw, $2, 0 ); }
809	\| THROW ';'
810	{ $$ = new StatementNode( StatementNode::Throw ); }
811	;
812
813	exception_statement:
814	TRY compound_statement handler_list
815	{ $$ = new StatementNode( StatementNode::Try, 0,(StatementNode )(mkList(($2,*$3 )))); }
816	\| TRY compound_statement finally_clause
817	{ $$ = new StatementNode( StatementNode::Try, 0,(StatementNode )(mkList(($2,*$3 )))); }
818	\| TRY compound_statement handler_list finally_clause
819	{
820	$3->set_link( $4 );
821	$$ = new StatementNode( StatementNode::Try, 0,(StatementNode )(mkList(($2,*$3 ))));
822	}
823	;
824
825	handler_list:
826	// There must be at least one catch clause
827	handler_clause
828	// ISO/IEC 9899:1999 Section 15.3(6 ) If present, a "..." handler shall be the last handler for its try block.
829	\| CATCH '(' ELLIPSIS ')' compound_statement
830	{ $$ = StatementNode::newCatchStmt( 0, $5, true ); }
831	\| handler_clause CATCH '(' ELLIPSIS ')' compound_statement
832	{ $$ = $1->set_link( StatementNode::newCatchStmt( 0, $6, true ) ); }
833	;
834
835	handler_clause:
836	CATCH '(' push push exception_declaration pop ')' compound_statement pop
837	{ $$ = StatementNode::newCatchStmt( $5, $8 ); }
838	\| handler_clause CATCH '(' push push exception_declaration pop ')' compound_statement pop
839	{ $$ = $1->set_link( StatementNode::newCatchStmt( $6, $9 ) ); }
840	;
841
842	finally_clause:
843	FINALLY compound_statement
844	{
845	$$ = new StatementNode( StatementNode::Finally, 0, $2 );
846	std::cout << "Just created a finally node" << std::endl;
847	}
848	;
849
850	exception_declaration:
851	// A semantic check is required to ensure type_specifier does not create a new type, e.g.:
852	//
853	// catch ( struct { int i; } x ) ...
854	//
855	// This new type cannot catch any thrown type because of name equivalence among types.
856	type_specifier
857	\| type_specifier declarator
858	{
859	typedefTable.addToEnclosingScope( TypedefTable::ID );
860	$$ = $2->addType( $1 );
861	}
862	\| type_specifier variable_abstract_declarator
863	{ $$ = $2->addType( $1 ); }
864	\| new_abstract_declarator_tuple no_attr_identifier // CFA
865	{
866	typedefTable.addToEnclosingScope( TypedefTable::ID );
867	$$ = $1->addName( $2 );
868	}
869	\| new_abstract_declarator_tuple // CFA
870	;
871
872	asm_statement:
873	ASM asm_volatile_opt '(' string_literal_list ')' ';'
874	{ $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, 0 ); }
875	\| ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ')' ';' // remaining GCC
876	{ $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6 ); }
877	\| ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ':' asm_operands_opt ')' ';'
878	{ $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6, $8 ); }
879	\| ASM asm_volatile_opt '(' string_literal_list ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
880	{ $$ = new AsmStmtNode( StatementNode::Asm, $2, $4, $6, $8, $10 ); }
881	\| ASM asm_volatile_opt GOTO '(' string_literal_list ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
882	{ $$ = new AsmStmtNode( StatementNode::Asm, $2, $5, 0, $8, $10, $12 ); }
883	;
884
885	asm_volatile_opt: // GCC
886	// empty
887	{ $$ = false; }
888	\| VOLATILE
889	{ $$ = true; }
890	;
891
892	asm_operands_opt: // GCC
893	// empty
894	{ $$ = 0; } // use default argument
895	\| asm_operands_list
896	;
897
898	asm_operands_list: // GCC
899	asm_operand
900	\| asm_operands_list ',' asm_operand
901	{ $$ = (ExpressionNode *)$1->set_link( $3 ); }
902	;
903
904	asm_operand: // GCC
905	string_literal_list '(' constant_expression ')'
906	{ $$ = new AsmExprNode( 0, $1, $3 ); }
907	\| '[' constant_expression ']' string_literal_list '(' constant_expression ')'
908	{ $$ = new AsmExprNode( $2, $4, $6 ); }
909	;
910
911	asm_clobbers_list_opt: // GCC
912	// empty
913	{ $$ = 0; } // use default argument
914	\| string_literal_list
915	{ $$ = $1; }
916	\| asm_clobbers_list_opt ',' string_literal_list
917	{ $$ = (ConstantNode *)$1->set_link( $3 ); }
918	;
919
920	label_list:
921	no_attr_identifier
922	{ $$ = new LabelNode(); $$->append_label( $1 ); }
923	\| label_list ',' no_attr_identifier
924	{ $$ = $1; $1->append_label( $3 ); }
925	;
926
927	//***************************** DECLARATIONS *******************************
928
929	declaration_list_opt: // used at beginning of switch statement
930	pop
931	{ $$ = 0; }
932	\| declaration_list
933	;
934
935	declaration_list:
936	declaration
937	\| declaration_list push declaration
938	{ $$ = $1->appendList( $3 ); }
939	;
940
941	old_declaration_list_opt: // used to declare parameter types in K&R style functions
942	pop
943	{ $$ = 0; }
944	\| old_declaration_list
945	;
946
947	old_declaration_list:
948	old_declaration
949	\| old_declaration_list push old_declaration
950	{ $$ = $1->appendList( $3 ); }
951	;
952
953	local_label_declaration_opt: // GCC, local label
954	// empty
955	\| local_label_declaration_list
956	;
957
958	local_label_declaration_list: // GCC, local label
959	LABEL local_label_list ';'
960	\| local_label_declaration_list LABEL local_label_list ';'
961	;
962
963	local_label_list: // GCC, local label
964	no_attr_identifier_or_type_name {}
965	\| local_label_list ',' no_attr_identifier_or_type_name {}
966	;
967
968	declaration: // CFA, new & old style declarations
969	new_declaration
970	\| old_declaration
971	;
972
973	// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
974	// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
975	// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
976	// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
977	// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
978	// block, but cannot be mixed within a specific declaration.
979	//
980	// CFA C
981	// [10] int x; int x[10]; // array of 10 integers
982	// [10] * char y; char *y[10]; // array of 10 pointers to char
983
984	new_declaration: // CFA
985	new_variable_declaration pop ';'
986	\| new_typedef_declaration pop ';'
987	\| new_function_declaration pop ';'
988	\| type_declaring_list pop ';'
989	\| context_specifier pop ';'
990	;
991
992	new_variable_declaration: // CFA
993	new_variable_specifier initializer_opt
994	{
995	typedefTable.addToEnclosingScope( TypedefTable::ID );
996	$$ = $1;
997	}
998	\| declaration_qualifier_list new_variable_specifier initializer_opt
999	// declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1000	// them as a type_qualifier cannot appear in that context.
1001	{
1002	typedefTable.addToEnclosingScope( TypedefTable::ID );
1003	$$ = $2->addQualifiers( $1 );
1004	}
1005	\| new_variable_declaration pop ',' push identifier_or_type_name initializer_opt
1006	{
1007	typedefTable.addToEnclosingScope( *$5, TypedefTable::ID );
1008	$$ = $1->appendList( $1->cloneType( $5 ) );
1009	}
1010	;
1011
1012	new_variable_specifier: // CFA
1013	// A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1014	// storage-class
1015	new_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
1016	{
1017	typedefTable.setNextIdentifier( *$2 );
1018	$$ = $1->addName( $2 );
1019	}
1020	\| new_abstract_tuple identifier_or_type_name asm_name_opt
1021	{
1022	typedefTable.setNextIdentifier( *$2 );
1023	$$ = $1->addName( $2 );
1024	}
1025	\| type_qualifier_list new_abstract_tuple identifier_or_type_name asm_name_opt
1026	{
1027	typedefTable.setNextIdentifier( *$3 );
1028	$$ = $2->addQualifiers( $1 )->addName( $3 );
1029	}
1030	;
1031
1032	new_function_declaration: // CFA
1033	new_function_specifier
1034	{
1035	typedefTable.addToEnclosingScope( TypedefTable::ID );
1036	$$ = $1;
1037	}
1038	\| type_qualifier_list new_function_specifier
1039	{
1040	typedefTable.addToEnclosingScope( TypedefTable::ID );
1041	$$ = $2->addQualifiers( $1 );
1042	}
1043	\| declaration_qualifier_list new_function_specifier
1044	{
1045	typedefTable.addToEnclosingScope( TypedefTable::ID );
1046	$$ = $2->addQualifiers( $1 );
1047	}
1048	\| declaration_qualifier_list type_qualifier_list new_function_specifier
1049	{
1050	typedefTable.addToEnclosingScope( TypedefTable::ID );
1051	$$ = $3->addQualifiers( $1 )->addQualifiers( $2 );
1052	}
1053	\| new_function_declaration pop ',' push identifier_or_type_name
1054	{
1055	typedefTable.addToEnclosingScope( *$5, TypedefTable::ID );
1056	$$ = $1->appendList( $1->cloneType( $5 ) );
1057	}
1058	;
1059
1060	new_function_specifier: // CFA
1061	'[' ']' identifier_or_type_name '(' push new_parameter_type_list_opt pop ')' // S/R conflict
1062	{
1063	$$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1064	}
1065	// '[' ']' identifier '(' push new_parameter_type_list_opt pop ')'
1066	// {
1067	// typedefTable.setNextIdentifier( *$5 );
1068	// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1069	// }
1070	// \| '[' ']' TYPEDEFname '(' push new_parameter_type_list_opt pop ')'
1071	// {
1072	// typedefTable.setNextIdentifier( *$5 );
1073	// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1074	// }
1075	// \| '[' ']' typegen_name
1076	// identifier_or_type_name must be broken apart because of the sequence:
1077	//
1078	// '[' ']' identifier_or_type_name '(' new_parameter_type_list_opt ')'
1079	// '[' ']' type_specifier
1080	//
1081	// type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1082	// flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
1083	\| new_abstract_tuple identifier_or_type_name '(' push new_parameter_type_list_opt pop ')'
1084	// To obtain LR(1 ), this rule must be factored out from function return type (see new_abstract_declarator).
1085	{
1086	$$ = DeclarationNode::newFunction( $2, $1, $5, 0, true );
1087	}
1088	\| new_function_return identifier_or_type_name '(' push new_parameter_type_list_opt pop ')'
1089	{
1090	$$ = DeclarationNode::newFunction( $2, $1, $5, 0, true );
1091	}
1092	;
1093
1094	new_function_return: // CFA
1095	'[' push new_parameter_list pop ']'
1096	{ $$ = DeclarationNode::newTuple( $3 ); }
1097	\| '[' push new_parameter_list pop ',' push new_abstract_parameter_list pop ']'
1098	// To obtain LR(1 ), the last new_abstract_parameter_list is added into this flattened rule to lookahead to the
1099	// ']'.
1100	{ $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
1101	;
1102
1103	new_typedef_declaration: // CFA
1104	TYPEDEF new_variable_specifier
1105	{
1106	typedefTable.addToEnclosingScope( TypedefTable::TD );
1107	$$ = $2->addTypedef();
1108	}
1109	\| TYPEDEF new_function_specifier
1110	{
1111	typedefTable.addToEnclosingScope( TypedefTable::TD );
1112	$$ = $2->addTypedef();
1113	}
1114	\| new_typedef_declaration pop ',' push no_attr_identifier
1115	{
1116	typedefTable.addToEnclosingScope( *$5, TypedefTable::TD );
1117	$$ = $1->appendList( $1->cloneType( $5 ) );
1118	}
1119	;
1120
1121	// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1122	// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
1123
1124	typedef_declaration:
1125	TYPEDEF type_specifier declarator
1126	{
1127	typedefTable.addToEnclosingScope( TypedefTable::TD );
1128	$$ = $3->addType( $2 )->addTypedef();
1129	}
1130	\| typedef_declaration pop ',' push declarator
1131	{
1132	typedefTable.addToEnclosingScope( TypedefTable::TD );
1133	$$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1134	}
1135	\| type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
1136	{
1137	typedefTable.addToEnclosingScope( TypedefTable::TD );
1138	$$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1139	}
1140	\| type_specifier TYPEDEF declarator
1141	{
1142	typedefTable.addToEnclosingScope( TypedefTable::TD );
1143	$$ = $3->addType( $1 )->addTypedef();
1144	}
1145	\| type_specifier TYPEDEF type_qualifier_list declarator
1146	{
1147	typedefTable.addToEnclosingScope( TypedefTable::TD );
1148	$$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
1149	}
1150	;
1151
1152	typedef_expression:
1153	// GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
1154	TYPEDEF no_attr_identifier '=' assignment_expression
1155	{
1156	typedefTable.addToEnclosingScope( *$2, TypedefTable::TD );
1157	$$ = DeclarationNode::newName( 0 ); // XXX
1158	}
1159	\| typedef_expression pop ',' push no_attr_identifier '=' assignment_expression
1160	{
1161	typedefTable.addToEnclosingScope( *$5, TypedefTable::TD );
1162	$$ = DeclarationNode::newName( 0 ); // XXX
1163	}
1164	;
1165
1166	old_declaration:
1167	declaring_list pop ';'
1168	\| typedef_declaration pop ';'
1169	\| typedef_expression pop ';' // GCC, naming expression type
1170	\| sue_declaration_specifier pop ';'
1171	;
1172
1173	declaring_list:
1174	// A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1175	// storage-class
1176	declaration_specifier declarator asm_name_opt initializer_opt
1177	{
1178	typedefTable.addToEnclosingScope( TypedefTable::ID );
1179	$$ = ( $2->addType( $1 ))->addInitializer( $4 );
1180	}
1181	\| declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
1182	{
1183	typedefTable.addToEnclosingScope( TypedefTable::ID );
1184	$$ = $1->appendList( $1->cloneBaseType( $4->addInitializer( $6 ) ) );
1185	}
1186	;
1187
1188	declaration_specifier: // type specifier + storage class
1189	basic_declaration_specifier
1190	\| sue_declaration_specifier
1191	\| typedef_declaration_specifier
1192	\| typegen_declaration_specifier
1193	;
1194
1195	type_specifier: // declaration specifier - storage class
1196	basic_type_specifier
1197	\| sue_type_specifier
1198	\| typedef_type_specifier
1199	\| typegen_type_specifier
1200	;
1201
1202	type_qualifier_list_opt: // GCC, used in asm_statement
1203	// empty
1204	{ $$ = 0; }
1205	\| type_qualifier_list
1206	;
1207
1208	type_qualifier_list:
1209	// A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
1210	//
1211	// ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1212	// specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1213	// appeared only once.
1214	type_qualifier
1215	\| type_qualifier_list type_qualifier
1216	{ $$ = $1->addQualifiers( $2 ); }
1217	;
1218
1219	type_qualifier:
1220	type_qualifier_name
1221	\| attribute
1222	//{ $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); }
1223	;
1224
1225	type_qualifier_name:
1226	CONST
1227	{ $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); }
1228	\| RESTRICT
1229	{ $$ = DeclarationNode::newQualifier( DeclarationNode::Restrict ); }
1230	\| VOLATILE
1231	{ $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); }
1232	\| LVALUE // CFA
1233	{ $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); }
1234	\| ATOMIC
1235	{ $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); }
1236	\| FORALL '('
1237	{
1238	typedefTable.enterScope();
1239	}
1240	type_parameter_list ')' // CFA
1241	{
1242	typedefTable.leaveScope();
1243	$$ = DeclarationNode::newForall( $4 );
1244	}
1245	;
1246
1247	declaration_qualifier_list:
1248	storage_class_list
1249	\| type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
1250	{ $$ = $1->addQualifiers( $2 ); }
1251	\| declaration_qualifier_list type_qualifier_list storage_class_list
1252	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1253	;
1254
1255	storage_class_list:
1256	// A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1257	// only one of each is specified, except for inline, which can appear with the others.
1258	//
1259	// ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1260	// specifiers in a declaration.
1261	storage_class
1262	\| storage_class_list storage_class
1263	{ $$ = $1->addQualifiers( $2 ); }
1264	;
1265
1266	storage_class:
1267	storage_class_name
1268	;
1269
1270	storage_class_name:
1271	EXTERN
1272	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); }
1273	\| STATIC
1274	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); }
1275	\| AUTO
1276	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); }
1277	\| REGISTER
1278	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); }
1279	\| INLINE // C99
1280	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); }
1281	\| FORTRAN // C99
1282	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); }
1283	\| NORETURN // C11
1284	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Noreturn ); }
1285	\| THREADLOCAL // C11
1286	{ $$ = DeclarationNode::newStorageClass( DeclarationNode::Threadlocal ); }
1287	;
1288
1289	basic_type_name:
1290	CHAR
1291	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1292	\| DOUBLE
1293	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
1294	\| FLOAT
1295	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1296	\| INT
1297	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1298	\| LONG
1299	{ $$ = DeclarationNode::newModifier( DeclarationNode::Long ); }
1300	\| SHORT
1301	{ $$ = DeclarationNode::newModifier( DeclarationNode::Short ); }
1302	\| SIGNED
1303	{ $$ = DeclarationNode::newModifier( DeclarationNode::Signed ); }
1304	\| UNSIGNED
1305	{ $$ = DeclarationNode::newModifier( DeclarationNode::Unsigned ); }
1306	\| VOID
1307	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1308	\| BOOL // C99
1309	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
1310	\| COMPLEX // C99
1311	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); }
1312	\| IMAGINARY // C99
1313	{ $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); }
1314	;
1315
1316	basic_declaration_specifier:
1317	// A semantic check is necessary for conflicting storage classes.
1318	basic_type_specifier
1319	\| declaration_qualifier_list basic_type_specifier
1320	{ $$ = $2->addQualifiers( $1 ); }
1321	\| basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1322	{ $$ = $1->addQualifiers( $2 ); }
1323	\| basic_declaration_specifier storage_class type_qualifier_list
1324	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1325	\| basic_declaration_specifier storage_class basic_type_specifier
1326	{ $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1327	;
1328
1329	basic_type_specifier:
1330	direct_type_name
1331	\| type_qualifier_list_opt indirect_type_name type_qualifier_list_opt
1332	{ $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1333	;
1334
1335	direct_type_name:
1336	// A semantic check is necessary for conflicting type qualifiers.
1337	basic_type_name
1338	\| type_qualifier_list basic_type_name
1339	{ $$ = $2->addQualifiers( $1 ); }
1340	\| direct_type_name type_qualifier
1341	{ $$ = $1->addQualifiers( $2 ); }
1342	\| direct_type_name basic_type_name
1343	{ $$ = $1->addType( $2 ); }
1344	;
1345
1346	indirect_type_name:
1347	TYPEOF '(' type_name ')' // GCC: typeof(x) y;
1348	{ $$ = $3; }
1349	\| TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y;
1350	{ $$ = DeclarationNode::newTypeof( $3 ); }
1351	\| ATTR_TYPEGENname '(' type_name ')' // CFA: e.g., @type(x) y;
1352	{ $$ = DeclarationNode::newAttr( $1, $3 ); }
1353	\| ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y;
1354	{ $$ = DeclarationNode::newAttr( $1, $3 ); }
1355	;
1356
1357	sue_declaration_specifier:
1358	sue_type_specifier
1359	\| declaration_qualifier_list sue_type_specifier
1360	{ $$ = $2->addQualifiers( $1 ); }
1361	\| sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1362	{ $$ = $1->addQualifiers( $2 ); }
1363	\| sue_declaration_specifier storage_class type_qualifier_list
1364	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1365	;
1366
1367	sue_type_specifier:
1368	elaborated_type_name // struct, union, enum
1369	\| type_qualifier_list elaborated_type_name
1370	{ $$ = $2->addQualifiers( $1 ); }
1371	\| sue_type_specifier type_qualifier
1372	{ $$ = $1->addQualifiers( $2 ); }
1373	;
1374
1375	typedef_declaration_specifier:
1376	typedef_type_specifier
1377	\| declaration_qualifier_list typedef_type_specifier
1378	{ $$ = $2->addQualifiers( $1 ); }
1379	\| typedef_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1380	{ $$ = $1->addQualifiers( $2 ); }
1381	\| typedef_declaration_specifier storage_class type_qualifier_list
1382	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1383	;
1384
1385	typedef_type_specifier: // typedef types
1386	TYPEDEFname
1387	{ $$ = DeclarationNode::newFromTypedef( $1 ); }
1388	\| type_qualifier_list TYPEDEFname
1389	{ $$ = DeclarationNode::newFromTypedef( $2 )->addQualifiers( $1 ); }
1390	\| typedef_type_specifier type_qualifier
1391	{ $$ = $1->addQualifiers( $2 ); }
1392	;
1393
1394	elaborated_type_name:
1395	aggregate_name
1396	\| enum_name
1397	;
1398
1399	aggregate_name:
1400	aggregate_key '{' field_declaration_list '}'
1401	{ $$ = DeclarationNode::newAggregate( $1, 0, 0, $3 ); }
1402	\| aggregate_key no_attr_identifier_or_type_name
1403	{ $$ = DeclarationNode::newAggregate( $1, $2, 0, 0 ); }
1404	\| aggregate_key no_attr_identifier_or_type_name '{' field_declaration_list '}'
1405	{ $$ = DeclarationNode::newAggregate( $1, $2, 0, $4 ); }
1406	\| aggregate_key '(' type_name_list ')' '{' field_declaration_list '}' // CFA
1407	{ $$ = DeclarationNode::newAggregate( $1, 0, $3, $6 ); }
1408	\| aggregate_key typegen_name // CFA, S/R conflict
1409	{ $$ = $2; }
1410	;
1411
1412	aggregate_key:
1413	STRUCT attribute_list_opt
1414	{ $$ = DeclarationNode::Struct; }
1415	\| UNION attribute_list_opt
1416	{ $$ = DeclarationNode::Union; }
1417	;
1418
1419	field_declaration_list:
1420	field_declaration
1421	{ $$ = $1; }
1422	\| field_declaration_list field_declaration
1423	{ $$ = $1->appendList( $2 ); }
1424	;
1425
1426	field_declaration:
1427	new_field_declaring_list ';' // CFA, new style field declaration
1428	\| EXTENSION new_field_declaring_list ';' // GCC
1429	{ $$ = $2; }
1430	\| field_declaring_list ';'
1431	\| EXTENSION field_declaring_list ';' // GCC
1432	{ $$ = $2; }
1433	;
1434
1435	new_field_declaring_list: // CFA, new style field declaration
1436	new_abstract_declarator_tuple // CFA, no field name
1437	\| new_abstract_declarator_tuple no_attr_identifier_or_type_name
1438	{ $$ = $1->addName( $2 ); }
1439	\| new_field_declaring_list ',' no_attr_identifier_or_type_name
1440	{ $$ = $1->appendList( $1->cloneType( $3 ) ); }
1441	\| new_field_declaring_list ',' // CFA, no field name
1442	{ $$ = $1->appendList( $1->cloneType( 0 ) ); }
1443	;
1444
1445	field_declaring_list:
1446	type_specifier field_declarator
1447	{ $$ = $2->addType( $1 ); }
1448	\| field_declaring_list ',' attribute_list_opt field_declarator
1449	{ $$ = $1->appendList( $1->cloneBaseType( $4 ) ); }
1450	;
1451
1452	field_declarator:
1453	// empty
1454	{ $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name
1455	\| bit_subrange_size // no field name
1456	{ $$ = DeclarationNode::newBitfield( $1 ); }
1457	\| variable_declarator bit_subrange_size_opt
1458	// A semantic check is required to ensure bit_subrange only appears on base type int.
1459	{ $$ = $1->addBitfield( $2 ); }
1460	\| type_redeclarator bit_subrange_size_opt
1461	// A semantic check is required to ensure bit_subrange only appears on base type int.
1462	{ $$ = $1->addBitfield( $2 ); }
1463	\| variable_abstract_declarator // CFA, no field name
1464	;
1465
1466	bit_subrange_size_opt:
1467	// empty
1468	{ $$ = 0; }
1469	\| bit_subrange_size
1470	{ $$ = $1; }
1471	;
1472
1473	bit_subrange_size:
1474	':' constant_expression
1475	{ $$ = $2; }
1476	;
1477
1478	enum_key:
1479	ENUM attribute_list_opt
1480	;
1481
1482	enum_name:
1483	enum_key '{' enumerator_list comma_opt '}'
1484	{ $$ = DeclarationNode::newEnum( 0, $3 ); }
1485	\| enum_key no_attr_identifier_or_type_name '{' enumerator_list comma_opt '}'
1486	{ $$ = DeclarationNode::newEnum( $2, $4 ); }
1487	\| enum_key no_attr_identifier_or_type_name
1488	{ $$ = DeclarationNode::newEnum( $2, 0 ); }
1489	;
1490
1491	enumerator_list:
1492	no_attr_identifier_or_type_name enumerator_value_opt
1493	{ $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
1494	\| enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt
1495	{ $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
1496	;
1497
1498	enumerator_value_opt:
1499	// empty
1500	{ $$ = 0; }
1501	\| '=' constant_expression
1502	{ $$ = $2; }
1503	;
1504
1505	// Minimum of one parameter after which ellipsis is allowed only at the end.
1506
1507	new_parameter_type_list_opt: // CFA
1508	// empty
1509	{ $$ = 0; }
1510	\| new_parameter_type_list
1511	;
1512
1513	new_parameter_type_list: // CFA, abstract + real
1514	new_abstract_parameter_list
1515	\| new_parameter_list
1516	\| new_parameter_list pop ',' push new_abstract_parameter_list
1517	{ $$ = $1->appendList( $5 ); }
1518	\| new_abstract_parameter_list pop ',' push ELLIPSIS
1519	{ $$ = $1->addVarArgs(); }
1520	\| new_parameter_list pop ',' push ELLIPSIS
1521	{ $$ = $1->addVarArgs(); }
1522	;
1523
1524	new_parameter_list: // CFA
1525	// To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last new_abstract_parameter_list is
1526	// factored out from new_parameter_list, flattening the rules to get lookahead to the ']'.
1527	new_parameter_declaration
1528	\| new_abstract_parameter_list pop ',' push new_parameter_declaration
1529	{ $$ = $1->appendList( $5 ); }
1530	\| new_parameter_list pop ',' push new_parameter_declaration
1531	{ $$ = $1->appendList( $5 ); }
1532	\| new_parameter_list pop ',' push new_abstract_parameter_list pop ',' push new_parameter_declaration
1533	{ $$ = $1->appendList( $5 )->appendList( $9 ); }
1534	;
1535
1536	new_abstract_parameter_list: // CFA, new & old style abstract
1537	new_abstract_parameter_declaration
1538	\| new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration
1539	{ $$ = $1->appendList( $5 ); }
1540	;
1541
1542	parameter_type_list_opt:
1543	// empty
1544	{ $$ = 0; }
1545	\| parameter_type_list
1546	;
1547
1548	parameter_type_list:
1549	parameter_list
1550	\| parameter_list pop ',' push ELLIPSIS
1551	{ $$ = $1->addVarArgs(); }
1552	;
1553
1554	parameter_list: // abstract + real
1555	abstract_parameter_declaration
1556	\| parameter_declaration
1557	\| parameter_list pop ',' push abstract_parameter_declaration
1558	{ $$ = $1->appendList( $5 ); }
1559	\| parameter_list pop ',' push parameter_declaration
1560	{ $$ = $1->appendList( $5 ); }
1561	;
1562
1563	// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
1564	// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
1565
1566	new_parameter_declaration: // CFA, new & old style parameter declaration
1567	parameter_declaration
1568	\| new_identifier_parameter_declarator_no_tuple identifier_or_type_name assignment_opt
1569	{ $$ = $1->addName( $2 ); }
1570	\| new_abstract_tuple identifier_or_type_name assignment_opt
1571	// To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator).
1572	{ $$ = $1->addName( $2 ); }
1573	\| type_qualifier_list new_abstract_tuple identifier_or_type_name assignment_opt
1574	{ $$ = $2->addName( $3 )->addQualifiers( $1 ); }
1575	\| new_function_specifier
1576	;
1577
1578	new_abstract_parameter_declaration: // CFA, new & old style parameter declaration
1579	abstract_parameter_declaration
1580	\| new_identifier_parameter_declarator_no_tuple
1581	\| new_abstract_tuple
1582	// To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator).
1583	\| type_qualifier_list new_abstract_tuple
1584	{ $$ = $2->addQualifiers( $1 ); }
1585	\| new_abstract_function
1586	;
1587
1588	parameter_declaration:
1589	declaration_specifier identifier_parameter_declarator assignment_opt
1590	{
1591	typedefTable.addToEnclosingScope( TypedefTable::ID );
1592	$$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) );
1593	}
1594	\| declaration_specifier type_parameter_redeclarator assignment_opt
1595	{
1596	typedefTable.addToEnclosingScope( TypedefTable::ID );
1597	$$ = $2->addType( $1 )->addInitializer( new InitializerNode( $3 ) );
1598	}
1599	;
1600
1601	abstract_parameter_declaration:
1602	declaration_specifier
1603	\| declaration_specifier abstract_parameter_declarator
1604	{ $$ = $2->addType( $1 ); }
1605	;
1606
1607	// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
1608	// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
1609	// identifiers. The ANSI-style parameter-list can redefine a typedef name.
1610
1611	identifier_list: // K&R-style parameter list => no types
1612	no_attr_identifier
1613	{ $$ = DeclarationNode::newName( $1 ); }
1614	\| identifier_list ',' no_attr_identifier
1615	{ $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
1616	;
1617
1618	identifier_or_type_name:
1619	identifier
1620	\| TYPEDEFname
1621	\| TYPEGENname
1622	;
1623
1624	no_01_identifier_or_type_name:
1625	no_01_identifier
1626	\| TYPEDEFname
1627	\| TYPEGENname
1628	;
1629
1630	no_attr_identifier_or_type_name:
1631	no_attr_identifier
1632	\| TYPEDEFname
1633	\| TYPEGENname
1634	;
1635
1636	type_name_no_function: // sizeof, alignof, cast (constructor)
1637	new_abstract_declarator_tuple // CFA
1638	\| type_specifier
1639	\| type_specifier variable_abstract_declarator
1640	{ $$ = $2->addType( $1 ); }
1641	;
1642
1643	type_name: // typeof, assertion
1644	new_abstract_declarator_tuple // CFA
1645	\| new_abstract_function // CFA
1646	\| type_specifier
1647	\| type_specifier abstract_declarator
1648	{ $$ = $2->addType( $1 ); }
1649	;
1650
1651	initializer_opt:
1652	// empty
1653	{ $$ = 0; }
1654	\| '=' initializer
1655	{ $$ = $2; }
1656	;
1657
1658	initializer:
1659	assignment_expression { $$ = new InitializerNode( $1 ); }
1660	\| '{' initializer_list comma_opt '}' { $$ = new InitializerNode( $2, true ); }
1661	;
1662
1663	initializer_list:
1664	initializer
1665	\| designation initializer { $$ = $2->set_designators( $1 ); }
1666	\| initializer_list ',' initializer { $$ = (InitializerNode *)( $1->set_link( $3 ) ); }
1667	\| initializer_list ',' designation initializer
1668	{ $$ = (InitializerNode *)( $1->set_link( $4->set_designators( $3 ) ) ); }
1669	;
1670
1671	// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
1672	// '=' to separator the designator from the initializer value, as in:
1673	//
1674	// int x[10] = { [1] = 3 };
1675	//
1676	// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
1677	// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
1678	// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
1679	// shift/reduce conflicts
1680
1681	designation:
1682	designator_list ':' // C99, CFA uses ":" instead of "="
1683	\| no_attr_identifier_or_type_name ':' // GCC, field name
1684	{ $$ = new VarRefNode( $1 ); }
1685	;
1686
1687	designator_list: // C99
1688	designator
1689	\| designator_list designator
1690	{ $$ = (ExpressionNode *)( $1->set_link( $2 )); }
1691	//\| designator_list designator { $$ = new CompositeExprNode( $1, $2 ); }
1692	;
1693
1694	designator:
1695	// only ".0" and ".1" allowed => semantic check
1696	FLOATINGconstant
1697	{ $$ = new DesignatorNode( new VarRefNode( $1 ) ); }
1698	\| '.' no_attr_identifier_or_type_name // C99, field name
1699	{ $$ = new DesignatorNode( new VarRefNode( $2 ) ); }
1700	\| '[' push assignment_expression pop ']' // C99, single array element
1701	// assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
1702	{ $$ = new DesignatorNode( $3, true ); }
1703	\| '[' push subrange pop ']' // CFA, multiple array elements
1704	{ $$ = new DesignatorNode( $3, true ); }
1705	\| '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
1706	{ $$ = new DesignatorNode( new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $3, $5 ), true ); }
1707	\| '.' '[' push field_list pop ']' // CFA, tuple field selector
1708	{ $$ = new DesignatorNode( $4 ); }
1709	;
1710
1711	// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
1712	// rather than an object-oriented type system. This required four groups of extensions:
1713	//
1714	// Overloading: function, data, and operator identifiers may be overloaded.
1715	//
1716	// Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
1717	// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
1718	// definitions of new types. Type declarations with storage class "extern" provide opaque types.
1719	//
1720	// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
1721	// site. A polymorphic function is not a template; it is a function, with an address and a type.
1722	//
1723	// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
1724	// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
1725	// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
1726	// types provide the operations declared by a specification. Assertions are normally used to declare requirements
1727	// on type arguments of polymorphic functions.
1728
1729	typegen_declaration_specifier: // CFA
1730	typegen_type_specifier
1731	\| declaration_qualifier_list typegen_type_specifier
1732	{ $$ = $2->addQualifiers( $1 ); }
1733	\| typegen_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1734	{ $$ = $1->addQualifiers( $2 ); }
1735	\| typegen_declaration_specifier storage_class type_qualifier_list
1736	{ $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1737	;
1738
1739	typegen_type_specifier: // CFA
1740	typegen_name
1741	\| type_qualifier_list typegen_name
1742	{ $$ = $2->addQualifiers( $1 ); }
1743	\| typegen_type_specifier type_qualifier
1744	{ $$ = $1->addQualifiers( $2 ); }
1745	;
1746
1747	typegen_name: // CFA
1748	TYPEGENname '(' type_name_list ')'
1749	{ $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
1750	;
1751
1752	type_parameter_list: // CFA
1753	type_parameter assignment_opt
1754	\| type_parameter_list ',' type_parameter assignment_opt
1755	{ $$ = $1->appendList( $3 ); }
1756	;
1757
1758	type_parameter: // CFA
1759	type_class no_attr_identifier_or_type_name
1760	{ typedefTable.addToEnclosingScope( *$2, TypedefTable::TD ); }
1761	assertion_list_opt
1762	{ $$ = DeclarationNode::newTypeParam( $1, $2 )->addAssertions( $4 ); }
1763	\| type_specifier identifier_parameter_declarator
1764	;
1765
1766	type_class: // CFA
1767	TYPE
1768	{ $$ = DeclarationNode::Type; }
1769	\| DTYPE
1770	{ $$ = DeclarationNode::Ftype; }
1771	\| FTYPE
1772	{ $$ = DeclarationNode::Dtype; }
1773	;
1774
1775	assertion_list_opt: // CFA
1776	// empty
1777	{ $$ = 0; }
1778	\| assertion_list_opt assertion
1779	{ $$ = $1 == 0 ? $2 : $1->appendList( $2 ); }
1780	;
1781
1782	assertion: // CFA
1783	'\|' no_attr_identifier_or_type_name '(' type_name_list ')'
1784	{
1785	typedefTable.openContext( *$2 );
1786	$$ = DeclarationNode::newContextUse( $2, $4 );
1787	}
1788	\| '\|' '{' push context_declaration_list '}'
1789	{ $$ = $4; }
1790	\| '\|' '(' push type_parameter_list pop ')' '{' push context_declaration_list '}' '(' type_name_list ')'
1791	{ $$ = 0; }
1792	;
1793
1794	type_name_list: // CFA
1795	type_name
1796	{ $$ = new TypeValueNode( $1 ); }
1797	\| assignment_expression
1798	\| type_name_list ',' type_name
1799	{ $$ = (ExpressionNode *)( $1->set_link( new TypeValueNode( $3 ))); }
1800	\| type_name_list ',' assignment_expression
1801	{ $$ = (ExpressionNode *)( $1->set_link( $3 )); }
1802	;
1803
1804	type_declaring_list: // CFA
1805	TYPE type_declarator
1806	{ $$ = $2; }
1807	\| storage_class_list TYPE type_declarator
1808	{ $$ = $3->addQualifiers( $1 ); }
1809	\| type_declaring_list ',' type_declarator
1810	{ $$ = $1->appendList( $3->copyStorageClasses( $1 ) ); }
1811	;
1812
1813	type_declarator: // CFA
1814	type_declarator_name assertion_list_opt
1815	{ $$ = $1->addAssertions( $2 ); }
1816	\| type_declarator_name assertion_list_opt '=' type_name
1817	{ $$ = $1->addAssertions( $2 )->addType( $4 ); }
1818	;
1819
1820	type_declarator_name: // CFA
1821	no_attr_identifier_or_type_name
1822	{
1823	typedefTable.addToEnclosingScope( *$1, TypedefTable::TD );
1824	$$ = DeclarationNode::newTypeDecl( $1, 0 );
1825	}
1826	\| no_01_identifier_or_type_name '(' push type_parameter_list pop ')'
1827	{
1828	typedefTable.addToEnclosingScope( *$1, TypedefTable::TG );
1829	$$ = DeclarationNode::newTypeDecl( $1, $4 );
1830	}
1831	;
1832
1833	context_specifier: // CFA
1834	CONTEXT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{' '}'
1835	{
1836	typedefTable.addToEnclosingScope( *$2, TypedefTable::ID );
1837	$$ = DeclarationNode::newContext( $2, $5, 0 );
1838	}
1839	\| CONTEXT no_attr_identifier_or_type_name '(' push type_parameter_list pop ')' '{'
1840	{
1841	typedefTable.enterContext( *$2 );
1842	typedefTable.enterScope();
1843	}
1844	context_declaration_list '}'
1845	{
1846	typedefTable.leaveContext();
1847	typedefTable.addToEnclosingScope( *$2, TypedefTable::ID );
1848	$$ = DeclarationNode::newContext( $2, $5, $10 );
1849	}
1850	;
1851
1852	context_declaration_list: // CFA
1853	context_declaration
1854	\| context_declaration_list push context_declaration
1855	{ $$ = $1->appendList( $3 ); }
1856	;
1857
1858	context_declaration: // CFA
1859	new_context_declaring_list pop ';'
1860	\| context_declaring_list pop ';'
1861	;
1862
1863	new_context_declaring_list: // CFA
1864	new_variable_specifier
1865	{
1866	typedefTable.addToEnclosingScope2( TypedefTable::ID );
1867	$$ = $1;
1868	}
1869	\| new_function_specifier
1870	{
1871	typedefTable.addToEnclosingScope2( TypedefTable::ID );
1872	$$ = $1;
1873	}
1874	\| new_context_declaring_list pop ',' push identifier_or_type_name
1875	{
1876	typedefTable.addToEnclosingScope2( *$5, TypedefTable::ID );
1877	$$ = $1->appendList( $1->cloneType( $5 ) );
1878	}
1879	;
1880
1881	context_declaring_list: // CFA
1882	type_specifier declarator
1883	{
1884	typedefTable.addToEnclosingScope2( TypedefTable::ID );
1885	$$ = $2->addType( $1 );
1886	}
1887	\| context_declaring_list pop ',' push declarator
1888	{
1889	typedefTable.addToEnclosingScope2( TypedefTable::ID );
1890	$$ = $1->appendList( $1->cloneBaseType( $5 ) );
1891	}
1892	;
1893
1894	//*************************** EXTERNAL DEFINITIONS ***************************
1895
1896	translation_unit:
1897	// empty
1898	{} // empty input file
1899	\| external_definition_list
1900	{
1901	if ( theTree ) {
1902	theTree->appendList( $1 );
1903	} else {
1904	theTree = $1;
1905	}
1906	}
1907	;
1908
1909	external_definition_list:
1910	external_definition
1911	\| external_definition_list push external_definition
1912	{ $$ = ( $1 != NULL ) ? $1->appendList( $3 ) : $3; }
1913	;
1914
1915	external_definition_list_opt:
1916	// empty
1917	{ $$ = 0; }
1918	\| external_definition_list
1919	;
1920
1921	external_definition:
1922	declaration
1923	\| external_function_definition
1924	\| asm_statement // GCC, global assembler statement
1925	{}
1926	\| EXTERN STRINGliteral
1927	{
1928	linkageStack.push( linkage );
1929	linkage = LinkageSpec::fromString( *$2 );
1930	}
1931	'{' external_definition_list_opt '}' // C++-style linkage specifier
1932	{
1933	linkage = linkageStack.top();
1934	linkageStack.pop();
1935	$$ = $5;
1936	}
1937	\| EXTENSION external_definition
1938	{ $$ = $2; }
1939	;
1940
1941	external_function_definition:
1942	function_definition
1943	// These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
1944	// code with functions missing a type-specifier on the return type. Parsing is possible because
1945	// function_definition does not appear in the context of an expression (nested functions would preclude this
1946	// concession). A function prototype declaration must still have a type_specifier. OBSOLESCENT (see 1)
1947	\| function_declarator compound_statement
1948	{
1949	typedefTable.addToEnclosingScope( TypedefTable::ID );
1950	typedefTable.leaveScope();
1951	$$ = $1->addFunctionBody( $2 );
1952	}
1953	\| old_function_declarator push old_declaration_list_opt compound_statement
1954	{
1955	typedefTable.addToEnclosingScope( TypedefTable::ID );
1956	typedefTable.leaveScope();
1957	$$ = $1->addOldDeclList( $3 )->addFunctionBody( $4 );
1958	}
1959	;
1960
1961	function_definition:
1962	new_function_declaration compound_statement // CFA
1963	{
1964	typedefTable.addToEnclosingScope( TypedefTable::ID );
1965	typedefTable.leaveScope();
1966	$$ = $1->addFunctionBody( $2 );
1967	}
1968	\| declaration_specifier function_declarator compound_statement
1969	{
1970	typedefTable.addToEnclosingScope( TypedefTable::ID );
1971	typedefTable.leaveScope();
1972	$$ = $2->addFunctionBody( $3 )->addType( $1 );
1973	}
1974	\| type_qualifier_list function_declarator compound_statement
1975	{
1976	typedefTable.addToEnclosingScope( TypedefTable::ID );
1977	typedefTable.leaveScope();
1978	$$ = $2->addFunctionBody( $3 )->addQualifiers( $1 );
1979	}
1980	\| declaration_qualifier_list function_declarator compound_statement
1981	{
1982	typedefTable.addToEnclosingScope( TypedefTable::ID );
1983	typedefTable.leaveScope();
1984	$$ = $2->addFunctionBody( $3 )->addQualifiers( $1 );
1985	}
1986	\| declaration_qualifier_list type_qualifier_list function_declarator compound_statement
1987	{
1988	typedefTable.addToEnclosingScope( TypedefTable::ID );
1989	typedefTable.leaveScope();
1990	$$ = $3->addFunctionBody( $4 )->addQualifiers( $2 )->addQualifiers( $1 );
1991	}
1992
1993	// Old-style K&R function definition, OBSOLESCENT (see 4)
1994	\| declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement
1995	{
1996	typedefTable.addToEnclosingScope( TypedefTable::ID );
1997	typedefTable.leaveScope();
1998	$$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addType( $1 );
1999	}
2000	\| type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement
2001	{
2002	typedefTable.addToEnclosingScope( TypedefTable::ID );
2003	typedefTable.leaveScope();
2004	$$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 );
2005	}
2006
2007	// Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4)
2008	\| declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement
2009	{
2010	typedefTable.addToEnclosingScope( TypedefTable::ID );
2011	typedefTable.leaveScope();
2012	$$ = $2->addOldDeclList( $4 )->addFunctionBody( $5 )->addQualifiers( $1 );
2013	}
2014	\| declaration_qualifier_list type_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement
2015	{
2016	typedefTable.addToEnclosingScope( TypedefTable::ID );
2017	typedefTable.leaveScope();
2018	$$ = $3->addOldDeclList( $5 )->addFunctionBody( $6 )->addQualifiers( $2 )->addQualifiers( $1 );
2019	}
2020	;
2021
2022	declarator:
2023	variable_declarator
2024	\| function_declarator
2025	\| type_redeclarator
2026	;
2027
2028	subrange:
2029	constant_expression '~' constant_expression // CFA, integer subrange
2030	{ $$ = new CompositeExprNode( new OperatorNode( OperatorNode::Range ), $1, $3 ); }
2031	;
2032
2033	asm_name_opt: // GCC
2034	// empty
2035	\| ASM '(' string_literal_list ')' attribute_list_opt
2036	;
2037
2038	attribute_list_opt: // GCC
2039	// empty
2040	{ $$ = 0; }
2041	\| attribute_list
2042	;
2043
2044	attribute_list: // GCC
2045	attribute
2046	\| attribute_list attribute
2047	{ $$ = $2->addQualifiers( $1 ); }
2048	;
2049
2050	attribute: // GCC
2051	ATTRIBUTE '(' '(' attribute_parameter_list ')' ')'
2052	// { $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); }
2053	{ $$ = 0; }
2054	;
2055
2056	attribute_parameter_list: // GCC
2057	attrib
2058	\| attribute_parameter_list ',' attrib
2059	;
2060
2061	attrib: // GCC
2062	// empty
2063	\| any_word
2064	\| any_word '(' comma_expression_opt ')'
2065	;
2066
2067	any_word: // GCC
2068	identifier_or_type_name {}
2069	\| storage_class_name {}
2070	\| basic_type_name {}
2071	\| type_qualifier {}
2072	;
2073
2074	// ============================================================================
2075	// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2076	// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2077	// in:
2078	//
2079	// int (*f())[10] { ... };
2080	// ... (*f())[3] += 1; // definition mimics usage
2081	//
2082	// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2083	// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
2084	// ============================================================================
2085
2086	// ----------------------------------------------------------------------------
2087	// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2088	// to define a variable or function prototype, e.g.:
2089	//
2090	// valid declaration invalid definition
2091	// ----------------- ------------------
2092	// int f; int f {}
2093	// int f; int f {}
2094	// int f[10]; int f[10] {}
2095	// int (f)(int); int (f)(int) {}
2096	//
2097	// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2098	// variable_declarator and function_declarator.
2099	// ----------------------------------------------------------------------------
2100
2101	// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2102	// declaring an array of functions versus a pointer to an array of functions.
2103
2104	variable_declarator:
2105	paren_identifier attribute_list_opt
2106	{ $$ = $1->addQualifiers( $2 ); }
2107	\| variable_ptr
2108	\| variable_array attribute_list_opt
2109	{ $$ = $1->addQualifiers( $2 ); }
2110	\| variable_function attribute_list_opt
2111	{ $$ = $1->addQualifiers( $2 ); }
2112	;
2113
2114	paren_identifier:
2115	identifier
2116	{
2117	typedefTable.setNextIdentifier( *$1 );
2118	$$ = DeclarationNode::newName( $1 );
2119	}
2120	\| '(' paren_identifier ')' // redundant parenthesis
2121	{ $$ = $2; }
2122	;
2123
2124	variable_ptr:
2125	'*' variable_declarator
2126	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2127	\| '*' type_qualifier_list variable_declarator
2128	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2129	\| '(' variable_ptr ')'
2130	{ $$ = $2; }
2131	;
2132
2133	variable_array:
2134	paren_identifier array_dimension
2135	{ $$ = $1->addArray( $2 ); }
2136	\| '(' variable_ptr ')' array_dimension
2137	{ $$ = $2->addArray( $4 ); }
2138	\| '(' variable_array ')' multi_array_dimension // redundant parenthesis
2139	{ $$ = $2->addArray( $4 ); }
2140	\| '(' variable_array ')' // redundant parenthesis
2141	{ $$ = $2; }
2142	;
2143
2144	variable_function:
2145	'(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2146	{ $$ = $2->addParamList( $6 ); }
2147	\| '(' variable_function ')' // redundant parenthesis
2148	{ $$ = $2; }
2149	;
2150
2151	// This pattern parses a function declarator that is not redefining a typedef name. Because functions cannot be nested,
2152	// there is no context where a function definition can redefine a typedef name. To allow nested functions requires
2153	// further separation of variable and function declarators in type_redeclarator. The pattern precludes returning
2154	// arrays and functions versus pointers to arrays and functions.
2155
2156	function_declarator:
2157	function_no_ptr attribute_list_opt
2158	{ $$ = $1->addQualifiers( $2 ); }
2159	\| function_ptr
2160	\| function_array attribute_list_opt
2161	{ $$ = $1->addQualifiers( $2 ); }
2162	;
2163
2164	function_no_ptr:
2165	paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2166	{ $$ = $1->addParamList( $4 ); }
2167	\| '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2168	{ $$ = $2->addParamList( $6 ); }
2169	\| '(' function_no_ptr ')' // redundant parenthesis
2170	{ $$ = $2; }
2171	;
2172
2173	function_ptr:
2174	'*' function_declarator
2175	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2176	\| '*' type_qualifier_list function_declarator
2177	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2178	\| '(' function_ptr ')'
2179	{ $$ = $2; }
2180	;
2181
2182	function_array:
2183	'(' function_ptr ')' array_dimension
2184	{ $$ = $2->addArray( $4 ); }
2185	\| '(' function_array ')' multi_array_dimension // redundant parenthesis
2186	{ $$ = $2->addArray( $4 ); }
2187	\| '(' function_array ')' // redundant parenthesis
2188	{ $$ = $2; }
2189	;
2190
2191	// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a typedef name
2192	// (see function_declarator for additional comments). The pattern precludes returning arrays and functions versus
2193	// pointers to arrays and functions.
2194
2195	old_function_declarator:
2196	old_function_no_ptr
2197	\| old_function_ptr
2198	\| old_function_array
2199	;
2200
2201	old_function_no_ptr:
2202	paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2203	{ $$ = $1->addIdList( $3 ); }
2204	\| '(' old_function_ptr ')' '(' identifier_list ')'
2205	{ $$ = $2->addIdList( $5 ); }
2206	\| '(' old_function_no_ptr ')' // redundant parenthesis
2207	{ $$ = $2; }
2208	;
2209
2210	old_function_ptr:
2211	'*' old_function_declarator
2212	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2213	\| '*' type_qualifier_list old_function_declarator
2214	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2215	\| '(' old_function_ptr ')'
2216	{ $$ = $2; }
2217	;
2218
2219	old_function_array:
2220	'(' old_function_ptr ')' array_dimension
2221	{ $$ = $2->addArray( $4 ); }
2222	\| '(' old_function_array ')' multi_array_dimension // redundant parenthesis
2223	{ $$ = $2->addArray( $4 ); }
2224	\| '(' old_function_array ')' // redundant parenthesis
2225	{ $$ = $2; }
2226	;
2227
2228	// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
2229	//
2230	// typedef int foo;
2231	// {
2232	// int foo; // redefine typedef name in new scope
2233	// }
2234	//
2235	// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2236	// and functions versus pointers to arrays and functions.
2237
2238	type_redeclarator:
2239	paren_type attribute_list_opt
2240	{ $$ = $1->addQualifiers( $2 ); }
2241	\| type_ptr
2242	\| type_array attribute_list_opt
2243	{ $$ = $1->addQualifiers( $2 ); }
2244	\| type_function attribute_list_opt
2245	{ $$ = $1->addQualifiers( $2 ); }
2246	;
2247
2248	paren_type:
2249	typedef
2250	\| '(' paren_type ')'
2251	{ $$ = $2; }
2252	;
2253
2254	type_ptr:
2255	'*' type_redeclarator
2256	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2257	\| '*' type_qualifier_list type_redeclarator
2258	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2259	\| '(' type_ptr ')'
2260	{ $$ = $2; }
2261	;
2262
2263	type_array:
2264	paren_type array_dimension
2265	{ $$ = $1->addArray( $2 ); }
2266	\| '(' type_ptr ')' array_dimension
2267	{ $$ = $2->addArray( $4 ); }
2268	\| '(' type_array ')' multi_array_dimension // redundant parenthesis
2269	{ $$ = $2->addArray( $4 ); }
2270	\| '(' type_array ')' // redundant parenthesis
2271	{ $$ = $2; }
2272	;
2273
2274	type_function:
2275	paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2276	{ $$ = $1->addParamList( $4 ); }
2277	\| '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2278	{ $$ = $2->addParamList( $6 ); }
2279	\| '(' type_function ')' // redundant parenthesis
2280	{ $$ = $2; }
2281	;
2282
2283	// This pattern parses a declaration for a parameter variable or function prototype that is not redefining a typedef
2284	// name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes declaring an
2285	// array of functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to
2286	// arrays and functions.
2287
2288	identifier_parameter_declarator:
2289	paren_identifier attribute_list_opt
2290	{ $$ = $1->addQualifiers( $2 ); }
2291	\| identifier_parameter_ptr
2292	\| identifier_parameter_array attribute_list_opt
2293	{ $$ = $1->addQualifiers( $2 ); }
2294	\| identifier_parameter_function attribute_list_opt
2295	{ $$ = $1->addQualifiers( $2 ); }
2296	;
2297
2298	identifier_parameter_ptr:
2299	'*' identifier_parameter_declarator
2300	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2301	\| '*' type_qualifier_list identifier_parameter_declarator
2302	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2303	\| '(' identifier_parameter_ptr ')'
2304	{ $$ = $2; }
2305	;
2306
2307	identifier_parameter_array:
2308	paren_identifier array_parameter_dimension
2309	{ $$ = $1->addArray( $2 ); }
2310	\| '(' identifier_parameter_ptr ')' array_dimension
2311	{ $$ = $2->addArray( $4 ); }
2312	\| '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
2313	{ $$ = $2->addArray( $4 ); }
2314	\| '(' identifier_parameter_array ')' // redundant parenthesis
2315	{ $$ = $2; }
2316	;
2317
2318	identifier_parameter_function:
2319	paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2320	{ $$ = $1->addParamList( $4 ); }
2321	\| '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2322	{ $$ = $2->addParamList( $6 ); }
2323	\| '(' identifier_parameter_function ')' // redundant parenthesis
2324	{ $$ = $2; }
2325	;
2326
2327	// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
2328	// e.g.:
2329	//
2330	// typedef int foo;
2331	// int f( int foo ); // redefine typedef name in new scope
2332	//
2333	// and allows the C99 array options, which can only appear in a parameter list. In addition, the pattern handles the
2334	// special meaning of parenthesis around a typedef name:
2335	//
2336	// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
2337	// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
2338	// not as redundant parentheses around the identifier."
2339	//
2340	// which precludes the following cases:
2341	//
2342	// typedef float T;
2343	// int f( int ( T [5] ) ); // see abstract_parameter_declarator
2344	// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
2345	// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
2346	// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
2347	//
2348	// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
2349	// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
2350	// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
2351	// functions.
2352
2353	type_parameter_redeclarator:
2354	typedef attribute_list_opt
2355	{ $$ = $1->addQualifiers( $2 ); }
2356	\| type_parameter_ptr
2357	\| type_parameter_array attribute_list_opt
2358	{ $$ = $1->addQualifiers( $2 ); }
2359	\| type_parameter_function attribute_list_opt
2360	{ $$ = $1->addQualifiers( $2 ); }
2361	;
2362
2363	typedef:
2364	TYPEDEFname
2365	{
2366	typedefTable.setNextIdentifier( *$1 );
2367	$$ = DeclarationNode::newName( $1 );
2368	}
2369	\| TYPEGENname
2370	{
2371	typedefTable.setNextIdentifier( *$1 );
2372	$$ = DeclarationNode::newName( $1 );
2373	}
2374	;
2375
2376	type_parameter_ptr:
2377	'*' type_parameter_redeclarator
2378	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2379	\| '*' type_qualifier_list type_parameter_redeclarator
2380	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2381	\| '(' type_parameter_ptr ')'
2382	{ $$ = $2; }
2383	;
2384
2385	type_parameter_array:
2386	typedef array_parameter_dimension
2387	{ $$ = $1->addArray( $2 ); }
2388	\| '(' type_parameter_ptr ')' array_parameter_dimension
2389	{ $$ = $2->addArray( $4 ); }
2390	;
2391
2392	type_parameter_function:
2393	typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2394	{ $$ = $1->addParamList( $4 ); }
2395	\| '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2396	{ $$ = $2->addParamList( $6 ); }
2397	;
2398
2399	// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
2400	// which the type applies, e.g.:
2401	//
2402	// sizeof( int );
2403	// sizeof( int [10] );
2404	//
2405	// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2406	// and functions versus pointers to arrays and functions.
2407
2408	abstract_declarator:
2409	abstract_ptr
2410	\| abstract_array attribute_list_opt
2411	{ $$ = $1->addQualifiers( $2 ); }
2412	\| abstract_function attribute_list_opt
2413	{ $$ = $1->addQualifiers( $2 ); }
2414	;
2415
2416	abstract_ptr:
2417	'*'
2418	{ $$ = DeclarationNode::newPointer( 0 ); }
2419	\| '*' type_qualifier_list
2420	{ $$ = DeclarationNode::newPointer( $2 ); }
2421	\| '*' abstract_declarator
2422	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2423	\| '*' type_qualifier_list abstract_declarator
2424	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2425	\| '(' abstract_ptr ')'
2426	{ $$ = $2; }
2427	;
2428
2429	abstract_array:
2430	array_dimension
2431	\| '(' abstract_ptr ')' array_dimension
2432	{ $$ = $2->addArray( $4 ); }
2433	\| '(' abstract_array ')' multi_array_dimension // redundant parenthesis
2434	{ $$ = $2->addArray( $4 ); }
2435	\| '(' abstract_array ')' // redundant parenthesis
2436	{ $$ = $2; }
2437	;
2438
2439	abstract_function:
2440	'(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2441	{ $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); }
2442	\| '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2443	{ $$ = $2->addParamList( $6 ); }
2444	\| '(' abstract_function ')' // redundant parenthesis
2445	{ $$ = $2; }
2446	;
2447
2448	array_dimension:
2449	// Only the first dimension can be empty.
2450	'[' ']'
2451	{ $$ = DeclarationNode::newArray( 0, 0, false ); }
2452	\| '[' ']' multi_array_dimension
2453	{ $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
2454	\| multi_array_dimension
2455	;
2456
2457	multi_array_dimension:
2458	'[' push assignment_expression pop ']'
2459	{ $$ = DeclarationNode::newArray( $3, 0, false ); }
2460	\| '[' push '*' pop ']' // C99
2461	{ $$ = DeclarationNode::newVarArray( 0 ); }
2462	\| multi_array_dimension '[' push assignment_expression pop ']'
2463	{ $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
2464	\| multi_array_dimension '[' push '*' pop ']' // C99
2465	{ $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
2466	;
2467
2468	// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
2469	// identifier to which the type applies, e.g.:
2470	//
2471	// int f( int ); // abstract variable parameter; no parameter name specified
2472	// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
2473	//
2474	// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2475	// and functions versus pointers to arrays and functions.
2476
2477	abstract_parameter_declarator:
2478	abstract_parameter_ptr
2479	\| abstract_parameter_array attribute_list_opt
2480	{ $$ = $1->addQualifiers( $2 ); }
2481	\| abstract_parameter_function attribute_list_opt
2482	{ $$ = $1->addQualifiers( $2 ); }
2483	;
2484
2485	abstract_parameter_ptr:
2486	'*'
2487	{ $$ = DeclarationNode::newPointer( 0 ); }
2488	\| '*' type_qualifier_list
2489	{ $$ = DeclarationNode::newPointer( $2 ); }
2490	\| '*' abstract_parameter_declarator
2491	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2492	\| '*' type_qualifier_list abstract_parameter_declarator
2493	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2494	\| '(' abstract_parameter_ptr ')'
2495	{ $$ = $2; }
2496	;
2497
2498	abstract_parameter_array:
2499	array_parameter_dimension
2500	\| '(' abstract_parameter_ptr ')' array_parameter_dimension
2501	{ $$ = $2->addArray( $4 ); }
2502	\| '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
2503	{ $$ = $2->addArray( $4 ); }
2504	\| '(' abstract_parameter_array ')' // redundant parenthesis
2505	{ $$ = $2; }
2506	;
2507
2508	abstract_parameter_function:
2509	'(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2510	{ $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); }
2511	\| '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2512	{ $$ = $2->addParamList( $6 ); }
2513	\| '(' abstract_parameter_function ')' // redundant parenthesis
2514	{ $$ = $2; }
2515	;
2516
2517	array_parameter_dimension:
2518	// Only the first dimension can be empty or have qualifiers.
2519	array_parameter_1st_dimension
2520	\| array_parameter_1st_dimension multi_array_dimension
2521	{ $$ = $1->addArray( $2 ); }
2522	\| multi_array_dimension
2523	;
2524
2525	// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
2526	//
2527	// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
2528	// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
2529
2530	array_parameter_1st_dimension:
2531	'[' ']'
2532	{ $$ = DeclarationNode::newArray( 0, 0, false ); }
2533	// multi_array_dimension handles the '[' '*' ']' case
2534	\| '[' push type_qualifier_list '*' pop ']' // remaining C99
2535	{ $$ = DeclarationNode::newVarArray( $3 ); }
2536	\| '[' push type_qualifier_list pop ']'
2537	{ $$ = DeclarationNode::newArray( 0, $3, false ); }
2538	// multi_array_dimension handles the '[' assignment_expression ']' case
2539	\| '[' push type_qualifier_list assignment_expression pop ']'
2540	{ $$ = DeclarationNode::newArray( $4, $3, false ); }
2541	\| '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
2542	{ $$ = DeclarationNode::newArray( $5, $4, true ); }
2543	\| '[' push type_qualifier_list STATIC assignment_expression pop ']'
2544	{ $$ = DeclarationNode::newArray( $5, $3, true ); }
2545	;
2546
2547	// This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type applies,
2548	// e.g.:
2549	//
2550	// sizeof( int ); // abstract variable; no identifier name specified
2551	//
2552	// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2553	// and functions versus pointers to arrays and functions.
2554
2555	variable_abstract_declarator:
2556	variable_abstract_ptr
2557	\| variable_abstract_array attribute_list_opt
2558	{ $$ = $1->addQualifiers( $2 ); }
2559	\| variable_abstract_function attribute_list_opt
2560	{ $$ = $1->addQualifiers( $2 ); }
2561	;
2562
2563	variable_abstract_ptr:
2564	'*'
2565	{ $$ = DeclarationNode::newPointer( 0 ); }
2566	\| '*' type_qualifier_list
2567	{ $$ = DeclarationNode::newPointer( $2 ); }
2568	\| '*' variable_abstract_declarator
2569	{ $$ = $2->addPointer( DeclarationNode::newPointer( 0 ) ); }
2570	\| '*' type_qualifier_list variable_abstract_declarator
2571	{ $$ = $3->addPointer( DeclarationNode::newPointer( $2 ) ); }
2572	\| '(' variable_abstract_ptr ')'
2573	{ $$ = $2; }
2574	;
2575
2576	variable_abstract_array:
2577	array_dimension
2578	\| '(' variable_abstract_ptr ')' array_dimension
2579	{ $$ = $2->addArray( $4 ); }
2580	\| '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
2581	{ $$ = $2->addArray( $4 ); }
2582	\| '(' variable_abstract_array ')' // redundant parenthesis
2583	{ $$ = $2; }
2584	;
2585
2586	variable_abstract_function:
2587	'(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2588	{ $$ = $2->addParamList( $6 ); }
2589	\| '(' variable_abstract_function ')' // redundant parenthesis
2590	{ $$ = $2; }
2591	;
2592
2593	// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
2594	// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
2595
2596	new_identifier_parameter_declarator_tuple: // CFA
2597	new_identifier_parameter_declarator_no_tuple
2598	\| new_abstract_tuple
2599	\| type_qualifier_list new_abstract_tuple
2600	{ $$ = $2->addQualifiers( $1 ); }
2601	;
2602
2603	new_identifier_parameter_declarator_no_tuple: // CFA
2604	new_identifier_parameter_ptr
2605	\| new_identifier_parameter_array
2606	;
2607
2608	new_identifier_parameter_ptr: // CFA
2609	'*' type_specifier
2610	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
2611	\| type_qualifier_list '*' type_specifier
2612	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); }
2613	\| '*' new_abstract_function
2614	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
2615	\| type_qualifier_list '*' new_abstract_function
2616	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); }
2617	\| '*' new_identifier_parameter_declarator_tuple
2618	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
2619	\| type_qualifier_list '*' new_identifier_parameter_declarator_tuple
2620	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); }
2621	;
2622
2623	new_identifier_parameter_array: // CFA
2624	// Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
2625	// shift/reduce conflict with new-style empty (void) function return type.
2626	'[' ']' type_specifier
2627	{ $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2628	\| new_array_parameter_1st_dimension type_specifier
2629	{ $$ = $2->addNewArray( $1 ); }
2630	\| '[' ']' multi_array_dimension type_specifier
2631	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2632	\| new_array_parameter_1st_dimension multi_array_dimension type_specifier
2633	{ $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
2634	\| multi_array_dimension type_specifier
2635	{ $$ = $2->addNewArray( $1 ); }
2636	\| '[' ']' new_identifier_parameter_ptr
2637	{ $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2638	\| new_array_parameter_1st_dimension new_identifier_parameter_ptr
2639	{ $$ = $2->addNewArray( $1 ); }
2640	\| '[' ']' multi_array_dimension new_identifier_parameter_ptr
2641	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2642	\| new_array_parameter_1st_dimension multi_array_dimension new_identifier_parameter_ptr
2643	{ $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
2644	\| multi_array_dimension new_identifier_parameter_ptr
2645	{ $$ = $2->addNewArray( $1 ); }
2646	;
2647
2648	new_array_parameter_1st_dimension:
2649	'[' push type_qualifier_list '*' pop ']' // remaining C99
2650	{ $$ = DeclarationNode::newVarArray( $3 ); }
2651	\| '[' push type_qualifier_list assignment_expression pop ']'
2652	{ $$ = DeclarationNode::newArray( $4, $3, false ); }
2653	\| '[' push declaration_qualifier_list assignment_expression pop ']'
2654	// declaration_qualifier_list must be used because of shift/reduce conflict with
2655	// assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
2656	// appear in this context.
2657	{ $$ = DeclarationNode::newArray( $4, $3, true ); }
2658	\| '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
2659	{ $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
2660	;
2661
2662	// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
2663	// identifier to which the type applies, e.g.:
2664	//
2665	// [int] f( int ); // abstract variable parameter; no parameter name specified
2666	// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
2667	//
2668	// These rules need LR(3):
2669	//
2670	// new_abstract_tuple identifier_or_type_name
2671	// '[' new_parameter_list ']' identifier_or_type_name '(' new_parameter_type_list_opt ')'
2672	//
2673	// since a function return type can be syntactically identical to a tuple type:
2674	//
2675	// [int, int] t;
2676	// [int, int] f( int );
2677	//
2678	// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
2679	// new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
2680	// lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and tuple declarations are
2681	// duplicated when appearing with new_function_specifier.
2682
2683	new_abstract_declarator_tuple: // CFA
2684	new_abstract_tuple
2685	\| type_qualifier_list new_abstract_tuple
2686	{ $$ = $2->addQualifiers( $1 ); }
2687	\| new_abstract_declarator_no_tuple
2688	;
2689
2690	new_abstract_declarator_no_tuple: // CFA
2691	new_abstract_ptr
2692	\| new_abstract_array
2693	;
2694
2695	new_abstract_ptr: // CFA
2696	'*' type_specifier
2697	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
2698	\| type_qualifier_list '*' type_specifier
2699	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); }
2700	\| '*' new_abstract_function
2701	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
2702	\| type_qualifier_list '*' new_abstract_function
2703	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); }
2704	\| '*' new_abstract_declarator_tuple
2705	{ $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
2706	\| type_qualifier_list '*' new_abstract_declarator_tuple
2707	{ $$ = $3->addNewPointer( DeclarationNode::newPointer( $1 ) ); }
2708	;
2709
2710	new_abstract_array: // CFA
2711	// Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
2712	// empty (void) function return type.
2713	'[' ']' type_specifier
2714	{ $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2715	\| '[' ']' multi_array_dimension type_specifier
2716	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2717	\| multi_array_dimension type_specifier
2718	{ $$ = $2->addNewArray( $1 ); }
2719	\| '[' ']' new_abstract_ptr
2720	{ $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2721	\| '[' ']' multi_array_dimension new_abstract_ptr
2722	{ $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
2723	\| multi_array_dimension new_abstract_ptr
2724	{ $$ = $2->addNewArray( $1 ); }
2725	;
2726
2727	new_abstract_tuple: // CFA
2728	'[' push new_abstract_parameter_list pop ']'
2729	{ $$ = DeclarationNode::newTuple( $3 ); }
2730	;
2731
2732	new_abstract_function: // CFA
2733	'[' ']' '(' new_parameter_type_list_opt ')'
2734	{ $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $4, 0 ); }
2735	\| new_abstract_tuple '(' push new_parameter_type_list_opt pop ')'
2736	{ $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); }
2737	\| new_function_return '(' push new_parameter_type_list_opt pop ')'
2738	{ $$ = DeclarationNode::newFunction( 0, $1, $4, 0 ); }
2739	;
2740
2741	// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
2742	// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
2743	//
2744	// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
2745	// the declaration specifiers in a declaration is an obsolescent feature."
2746	//
2747	// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
2748	// prototype-format parameter type declarators) is an obsolescent feature."
2749	//
2750	// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
2751	// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
2752
2753	//*********************** MISCELLANEOUS ******************************
2754
2755	comma_opt: // redundant comma
2756	// empty
2757	\| ','
2758	;
2759
2760	assignment_opt:
2761	// empty
2762	{ $$ = 0; }
2763	\| '=' assignment_expression
2764	{ $$ = $2; }
2765	;
2766
2767	%%
2768	// ----end of grammar----
2769
2770	void yyerror( const char * ) {
2771	std::cout << "Error ";
2772	if ( yyfilename ) {
2773	std::cout << "in file " << yyfilename << " ";
2774	} // if
2775	std::cout << "at line " << yylineno << " reading token \"" << (yytext[0] == '\0' ? "EOF" : yytext) << "\"" << std::endl;
2776	}
2777
2778	// Local Variables: //
2779	// mode: c++ //
2780	// tab-width: 4 //
2781	// compile-command: "make install" //
2782	// End: //

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