source: src/Parser/parser.yy@ 2f86ddf

ADT arm-eh ast-experimental cleanup-dtors enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 2f86ddf was 098f7ff, checked in by Rob Schluntz <rschlunt@…>, 7 years ago

Remove unmatched pop for handler_clause in parser

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File size: 131.6 KB
RevLine 
[b87a5ed]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//
[9335ecc]7// parser.yy --
[974906e2]8//
[c11e31c]9// Author : Peter A. Buhr
10// Created On : Sat Sep 1 20:22:55 2001
[936e9f4]11// Last Modified By : Peter A. Buhr
[cc22003]12// Last Modified On : Wed Aug 8 17:50:07 2018
13// Update Count : 3998
[974906e2]14//
[c11e31c]15
[de62360d]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.
[c11e31c]22
[de62360d]23// Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with
24// the grammar.
[c11e31c]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//
[de62360d]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:
[c11e31c]32//
[e7aed49]33// 1. designation with and without '=' (use ':' instead)
[c0aa336]34// 2. attributes not allowed in parenthesis of declarator
[c11e31c]35//
[de62360d]36// All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall
37// (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the
38// syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable
39// parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation"
40// grammar rule.
[51b73452]41
42%{
[b87a5ed]43#define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time
44#define YYDEBUG 1 // get the pretty debugging code to compile
[201aeb9]45#define YYERROR_VERBOSE // more information in syntax errors
[51b73452]46
47#undef __GNUC_MINOR__
48
49#include <cstdio>
50#include <stack>
[9ed4f94]51using namespace std;
52
[51b73452]53#include "ParseNode.h"
[984dce6]54#include "TypedefTable.h"
[1db21619]55#include "TypeData.h"
[51b73452]56#include "LinkageSpec.h"
[9ed4f94]57#include "Common/SemanticError.h" // error_str
[513e165]58#include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
[51b73452]59
[cbaee0d]60extern DeclarationNode * parseTree;
[8b7ee09]61extern LinkageSpec::Spec linkage;
[0da3e2c]62extern TypedefTable typedefTable;
63
[2298f728]64stack< LinkageSpec::Spec > linkageStack;
[7bf7fb9]65
[15697ff]66bool appendStr( string & to, string & from ) {
67 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]68 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]69 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
70 // easier to let the C compiler handle this case.
71 //
72 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
73 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
74 // i.e., u"a" U"b" L"c" is disallowed.
75
76 if ( from[0] != '"' ) { // encoding ?
77 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]78 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]79 yyerror( "non-matching string encodings for string-literal concatenation" );
80 return false; // parse error, must call YYERROR in action
[ea0c5e3]81 } else if ( from[1] == '8' ) {
82 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]83 } // if
84 } else {
[ea0c5e3]85 if ( from[1] == '8' ) { // move encoding to start
86 to = "u8" + to;
87 from.erase( 0, 1 ); // remove 2nd encoding
88 } else {
89 to = from[0] + to;
90 } // if
[15697ff]91 } // if
92 from.erase( 0, 1 ); // remove 2nd encoding
93 } // if
94 to += " " + from; // concatenated into single string
95 return true;
[7bf7fb9]96} // appendStr
[c0aa336]97
98DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) {
99 // distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__.
100 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier );
101 //cur->addType( specifier );
102 for ( cur = dynamic_cast< DeclarationNode * >( cur->get_next() ); cur != nullptr; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
103 cl->cloneBaseType( cur );
104 } // for
105 declList->addType( cl );
106// delete cl;
107 return declList;
108} // distAttr
109
110void distExt( DeclarationNode * declaration ) {
111 // distribute EXTENSION across all declarations
112 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
113 iter->set_extension( true );
114 } // for
115} // distExt
[fdca7c6]116
[e07caa2]117void distInl( DeclarationNode * declaration ) {
118 // distribute EXTENSION across all declarations
119 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
120 iter->set_inLine( true );
121 } // for
122} // distInl
123
[4c3ee8d]124void distQual( DeclarationNode * declaration, DeclarationNode * qualifiers ) {
[284da8c]125 // distribute qualifiers across all non-variable declarations in a distribution statemement
[4c3ee8d]126 for ( DeclarationNode * iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[284da8c]127 // SKULLDUGGERY: Distributions are parsed inside out, so qualifiers are added to declarations inside out. Since
128 // addQualifiers appends to the back of the list, the forall clauses are in the wrong order (right to left). To
129 // get the qualifiers in the correct order and still use addQualifiers (otherwise, 90% of addQualifiers has to
130 // be copied to add to front), the appropriate forall pointers are interchanged before calling addQualifiers.
131 DeclarationNode * clone = qualifiers->clone();
132 if ( qualifiers->type ) { // forall clause ? (handles SC)
133 if ( iter->type->kind == TypeData::Aggregate ) { // struct/union ?
134 swap( clone->type->forall, iter->type->aggregate.params );
135 iter->addQualifiers( clone );
136 } else if ( iter->type->kind == TypeData::AggregateInst && iter->type->aggInst.aggregate->aggregate.body ) { // struct/union ?
137 // Create temporary node to hold aggregate, call addQualifiers as above, then put nodes back together.
138 DeclarationNode newnode;
139 swap( newnode.type, iter->type->aggInst.aggregate );
140 swap( clone->type->forall, newnode.type->aggregate.params );
141 newnode.addQualifiers( clone );
142 swap( newnode.type, iter->type->aggInst.aggregate );
143 } else if ( iter->type->kind == TypeData::Function ) { // routines ?
144 swap( clone->type->forall, iter->type->forall );
145 iter->addQualifiers( clone );
146 } // if
147 } else { // just SC qualifiers
148 iter->addQualifiers( clone );
149 } // if
[4c3ee8d]150 } // for
[284da8c]151 delete qualifiers;
152} // distQual
[4c3ee8d]153
[c38ae92]154// There is an ambiguity for inline generic-routine return-types and generic routines.
155// forall( otype T ) struct S { int i; } bar( T ) {}
156// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
157// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]158// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
159// forall( otype T ) struct S { int T; };
160// forall( otype W ) bar( W ) {}
[c38ae92]161
162void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]163 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]164 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
165 declSpec->type->aggregate.params = nullptr;
166 } // if
167} // rebindForall
168
[dc7db63]169NameExpr * build_postfix_name( const string * name ) {
170 NameExpr * new_name = build_varref( new string( "?`" + *name ) );
171 delete name;
172 return new_name;
173} // build_postfix_name
174
[f7e4db27]175DeclarationNode * fieldDecl( DeclarationNode * typeSpec, DeclarationNode * fieldList ) {
176 if ( ! fieldList ) { // field declarator ?
177 if ( ! ( typeSpec->type && typeSpec->type->kind == TypeData::Aggregate ) ) {
178 stringstream ss;
179 typeSpec->type->print( ss );
180 SemanticWarning( yylloc, Warning::SuperfluousDecl, ss.str().c_str() );
181 return nullptr;
182 } // if
183 fieldList = DeclarationNode::newName( nullptr );
184 } // if
185 return distAttr( typeSpec, fieldList ); // mark all fields in list
186} // fieldDecl
187
[cc22003]188ForCtrl * forCtrl( ExpressionNode * type, string * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[f271bdd]189 return new ForCtrl(
190 distAttr( DeclarationNode::newTypeof( type ), DeclarationNode::newName( index )->addInitializer( new InitializerNode( start ) ) ),
[cc22003]191 new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index ) ) ), comp ) ),
[f271bdd]192 new ExpressionNode( build_binary_val( OperKinds::PlusAssn, new ExpressionNode( build_varref( new string( *index ) ) ), inc ) ) );
193} // forCtrl
194
195
[fc20514]196bool forall = false, yyy = false; // aggregate have one or more forall qualifiers ?
[d48e529]197
[201aeb9]198// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
199#define YYLLOC_DEFAULT(Cur, Rhs, N) \
200if ( N ) { \
201 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
202 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
203 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
204 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
205 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
206} else { \
207 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
208 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
209 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
210}
[51b73452]211%}
212
[15697ff]213%define parse.error verbose
214
[201aeb9]215// Types declaration for productions
[a67b60e]216%union
217{
218 Token tok;
219 ParseNode * pn;
220 ExpressionNode * en;
221 DeclarationNode * decl;
222 DeclarationNode::Aggregate aggKey;
223 DeclarationNode::TypeClass tclass;
224 StatementNode * sn;
[135b431]225 WaitForStmt * wfs;
[e612146c]226 Expression * constant;
[f271bdd]227 IfCtrl * ifctl;
228 ForCtrl * fctl;
[cc22003]229 enum OperKinds compop;
[a67b60e]230 LabelNode * label;
231 InitializerNode * in;
232 OperKinds op;
233 std::string * str;
234 bool flag;
[307a732]235 CatchStmt::Kind catch_kind;
[d807ca28]236 GenericExpr * genexpr;
[a67b60e]237}
238
[c11e31c]239//************************* TERMINAL TOKENS ********************************
[51b73452]240
[c11e31c]241// keywords
[51b73452]242%token TYPEDEF
[a7c90d4]243%token EXTERN STATIC AUTO REGISTER
244%token THREADLOCAL // C11
245%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
246%token NORETURN // C11
[51b73452]247%token CONST VOLATILE
[b87a5ed]248%token RESTRICT // C99
[a7c90d4]249%token ATOMIC // C11
[51d6d6a]250%token FORALL MUTEX VIRTUAL // CFA
[72457b6]251%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]252%token BOOL COMPLEX IMAGINARY // C99
[201aeb9]253%token INT128 FLOAT80 FLOAT128 // GCC
[72457b6]254%token ZERO_T ONE_T // CFA
255%token VALIST // GCC
[b87a5ed]256%token TYPEOF LABEL // GCC
[51b73452]257%token ENUM STRUCT UNION
[c27fb59]258%token EXCEPTION // CFA
[d3bc0ad]259%token COROUTINE MONITOR THREAD // CFA
[a7c90d4]260%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[5721a6d]261%token SIZEOF OFFSETOF
[b87a5ed]262%token ATTRIBUTE EXTENSION // GCC
[51b73452]263%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[114014c]264%token CHOOSE DISABLE ENABLE FALLTHRU FALLTHROUGH TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT WITH WHEN WAITFOR // CFA
[b87a5ed]265%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
[a7c90d4]266%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
[51b73452]267
[c11e31c]268// names and constants: lexer differentiates between identifier and typedef names
[b87a5ed]269%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname
[5b2edbc]270%token<tok> TIMEOUT WOR
[b87a5ed]271%token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname
[1b29996]272%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
[61fc4f6]273%token<tok> DIRECTIVE
[1b29996]274// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
275// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
276// converted into the tuple index (.)(1). e.g., 3.x
[930f69e]277%token<tok> FLOATING_DECIMALconstant FLOATING_FRACTIONconstant FLOATINGconstant
[51b73452]278
[c11e31c]279// multi-character operators
[b87a5ed]280%token ARROW // ->
281%token ICR DECR // ++ --
282%token LS RS // << >>
283%token LE GE EQ NE // <= >= == !=
284%token ANDAND OROR // && ||
285%token ELLIPSIS // ...
286
[e5f2a67]287%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
[b87a5ed]288%token PLUSassign MINUSassign // += -=
289%token LSassign RSassign // <<= >>=
290%token ANDassign ERassign ORassign // &= ^= |=
[51b73452]291
[cc22003]292%token Erange // ~=
[e7aed49]293%token ATassign // @=
[097e2b0]294
[6165ce7]295%type<tok> identifier no_attr_identifier
[84d58c5]296%type<tok> identifier_or_type_name no_attr_identifier_or_type_name attr_name
[5b2edbc]297%type<tok> quasi_keyword
[ab57786]298%type<constant> string_literal
299%type<str> string_literal_list
[51b73452]300
[c11e31c]301// expressions
[d1625f8]302%type<en> constant
[b87a5ed]303%type<en> tuple tuple_expression_list
[9706554]304%type<op> ptrref_operator unary_operator assignment_operator
[b87a5ed]305%type<en> primary_expression postfix_expression unary_expression
[994d080]306%type<en> cast_expression exponential_expression multiplicative_expression additive_expression
307%type<en> shift_expression relational_expression equality_expression
308%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
309%type<en> logical_AND_expression logical_OR_expression
310%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]311%type<en> comma_expression comma_expression_opt
[994d080]312%type<en> argument_expression_list argument_expression default_initialize_opt
[936e9f4]313%type<ifctl> if_control_expression
[2f22cc4]314%type<fctl> for_control_expression
[cc22003]315%type<compop> inclexcl
[51b73452]316%type<en> subrange
[c0aa336]317%type<decl> asm_name_opt
[7f5566b]318%type<en> asm_operands_opt asm_operands_list asm_operand
319%type<label> label_list
[d1625f8]320%type<en> asm_clobbers_list_opt
[7f5566b]321%type<flag> asm_volatile_opt
[cbce272]322%type<en> handler_predicate_opt
[d807ca28]323%type<genexpr> generic_association generic_assoc_list
[51b73452]324
[c11e31c]325// statements
[9bd6105]326%type<sn> statement labeled_statement compound_statement
327%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]328%type<sn> selection_statement if_statement
[6a276a0]329%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]330%type<en> case_value
331%type<sn> case_clause case_value_list case_label case_label_list
[8b47e50]332%type<sn> iteration_statement jump_statement
[9bd6105]333%type<sn> expression_statement asm_statement
[c453ac4]334%type<sn> with_statement
335%type<en> with_clause_opt
[51d6d6a]336%type<sn> exception_statement handler_clause finally_clause
337%type<catch_kind> handler_key
[b6b3c42]338%type<sn> mutex_statement
[9bd6105]339%type<en> when_clause when_clause_opt waitfor timeout
[135b431]340%type<sn> waitfor_statement
[51d6d6a]341%type<wfs> waitfor_clause
[51b73452]342
[c11e31c]343// declarations
[c0aa336]344%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
345%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
346%type<decl> abstract_parameter_declaration
[51b73452]347
348%type<aggKey> aggregate_key
[d0ffed1]349%type<decl> aggregate_type aggregate_type_nobody
[51b73452]350
[9997fee]351%type<decl> assertion assertion_list assertion_list_opt
[51b73452]352
353%type<en> bit_subrange_size_opt bit_subrange_size
354
[84d58c5]355%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[51b73452]356
[4040425]357%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]358
359%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]360%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]361
[d0ffed1]362%type<decl> elaborated_type elaborated_type_nobody
[51b73452]363
[d0ffed1]364%type<decl> enumerator_list enum_type enum_type_nobody
[51b73452]365%type<en> enumerator_value_opt
366
[3d56d15b]367%type<decl> external_definition external_definition_list external_definition_list_opt
368
369%type<decl> exception_declaration
[51b73452]370
[e07caa2]371%type<decl> field_declaration_list_opt field_declaration field_declaring_list_opt field_declarator field_abstract_list_opt field_abstract
[679e644]372%type<en> field field_name_list field_name fraction_constants_opt
[51b73452]373
[4d51835]374%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]375
[d3bc0ad]376%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
377%type<decl> identifier_list
[51b73452]378
[c0aa336]379%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
380%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
381%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]382
[c0aa336]383%type<decl> cfa_array_parameter_1st_dimension
[51b73452]384
[679e644]385%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list cfa_field_abstract_list
[c0aa336]386%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]387
[c0aa336]388%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
389%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]390
[40de461]391%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]392
[c0aa336]393%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]394
[b9be000b]395%type<decl> c_declaration static_assert
[c0aa336]396%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]397%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]398
[2a8427c6]399%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]400
[2871210]401%type<decl> paren_identifier paren_type
[51b73452]402
[0da3e2c]403%type<decl> storage_class storage_class_list
[51b73452]404
[d0ffed1]405%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]406
407%type<tclass> type_class
408%type<decl> type_declarator type_declarator_name type_declaring_list
409
[84d58c5]410%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
411%type<decl> typedef typedef_declaration typedef_expression
[c0aa336]412
413%type<decl> variable_type_redeclarator type_ptr type_array type_function
414
415%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]416
[84d58c5]417%type<decl> type type_no_function
418%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]419
[284da8c]420%type<en> type_parameters_opt type_list
[51b73452]421
[a16a7ec]422%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[d3bc0ad]423%type<decl> type_specifier type_specifier_nobody
[51b73452]424
[c0aa336]425%type<decl> variable_declarator variable_ptr variable_array variable_function
426%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]427
[44a81853]428%type<decl> attribute_list_opt attribute_list attribute_name_list attribute attribute_name
[1db21619]429
[c11e31c]430// initializers
[7fdb94e1]431%type<in> initializer initializer_list_opt initializer_opt
[51b73452]432
[c11e31c]433// designators
[51b73452]434%type<en> designator designator_list designation
435
436
[65d6de4]437// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
438// .---------. matches IF '(' comma_expression ')' statement . (reduce)
439// if ( C ) S1 else S2
440// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]441// Similar issues exit with the waitfor statement.
[51b73452]442
[1efa1e1]443// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
444// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[5b2edbc]445%precedence THEN // rule precedence for IF/WAITFOR statement
446%precedence WOR // token precedence for start of WOR in WAITFOR statement
447%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
448%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
[51b73452]449
[65d6de4]450// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
451// forall( otype T ) struct Foo { T v; };
452// .-----. matches pointer to function returning a generic (which is impossible without a type)
453// Foo ( *fp )( int );
454// `---' matches start of TYPEGENname '('
[fc20514]455// must be:
[a16a7ec]456// Foo( int ) ( *fp )( int );
[fc20514]457// The same problem occurs here:
458// forall( otype T ) struct Foo { T v; } ( *fp )( int );
459// must be:
460// forall( otype T ) struct Foo { T v; } ( int ) ( *fp )( int );
[65d6de4]461
462// Order of these lines matters (low-to-high precedence).
463%precedence TYPEGENname
[284da8c]464%precedence '}'
[65d6de4]465%precedence '('
466
[f38e7d7]467%locations // support location tracking for error messages
[930f69e]468
[b87a5ed]469%start translation_unit // parse-tree root
[51b73452]470
471%%
[c11e31c]472//************************* Namespace Management ********************************
473
[3d26610]474// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
475// which are lexically identical.
[c11e31c]476//
[3d26610]477// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
478// foo f; // to allow it to appear in this context
[c11e31c]479//
[3d26610]480// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
481// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
482// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
483// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
484// must be distinguished by the lexical scanner.
[c11e31c]485//
[3d26610]486// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
487// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
488// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
489// each context that introduces a name scope, a new level is created in the type table and that level is popped on
490// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
491// This requires distinguishing between type names that are local to the current declaration scope and those that
492// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]493//
[3d26610]494// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
495// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
496// around the list separator.
497//
498// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
499// push pop push pop
[51b73452]500
501push:
[ab57786]502 { typedefTable.enterScope(); }
[4d51835]503 ;
[51b73452]504
505pop:
[ab57786]506 { typedefTable.leaveScope(); }
[4d51835]507 ;
[51b73452]508
[c11e31c]509//************************* CONSTANTS ********************************
[51b73452]510
511constant:
[de62360d]512 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]513 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]514 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
515 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]516 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
517 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]518 ;
[51b73452]519
[5b2edbc]520quasi_keyword: // CFA
521 TIMEOUT
522 | WOR
523 ;
524
[679e644]525no_attr_identifier:
[4d51835]526 IDENTIFIER
[5b2edbc]527 | quasi_keyword
[679e644]528 | '@' // CFA
529 { Token tok = { new string( DeclarationNode::anonymous.newName() ), yylval.tok.loc }; $$ = tok; }
[4d51835]530 ;
[51b73452]531
[679e644]532identifier:
533 no_attr_identifier
534 | ATTR_IDENTIFIER // CFA
[4d51835]535 ;
[51b73452]536
[ab57786]537string_literal:
538 string_literal_list { $$ = build_constantStr( *$1 ); }
539 ;
540
[b87a5ed]541string_literal_list: // juxtaposed strings are concatenated
[ab57786]542 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]543 | string_literal_list STRINGliteral
544 {
[15697ff]545 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]546 delete $2; // allocated by lexer
[ab57786]547 $$ = $1; // conversion from tok to str
[7bf7fb9]548 }
[4d51835]549 ;
[51b73452]550
[c11e31c]551//************************* EXPRESSIONS ********************************
[51b73452]552
553primary_expression:
[4d51835]554 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]555 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]556 | quasi_keyword
557 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[1b29996]558 | tuple
[4d51835]559 | '(' comma_expression ')'
560 { $$ = $2; }
561 | '(' compound_statement ')' // GCC, lambda expression
[513e165]562 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast< CompoundStmt * >(maybeMoveBuild< Statement >($2) ) ) ); }
[7e419e7]563 | constant '`' IDENTIFIER // CFA, postfix call
[dc7db63]564 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), $1 ) ); }
[7e419e7]565 | string_literal '`' IDENTIFIER // CFA, postfix call
[dc7db63]566 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), new ExpressionNode( $1 ) ) ); }
[7e419e7]567 | IDENTIFIER '`' IDENTIFIER // CFA, postfix call
[dc7db63]568 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), new ExpressionNode( build_varref( $1 ) ) ) ); }
[7e419e7]569 | tuple '`' IDENTIFIER // CFA, postfix call
[dc7db63]570 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), $1 ) ); }
[7e419e7]571 | '(' comma_expression ')' '`' IDENTIFIER // CFA, postfix call
[dc7db63]572 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $5 ) ), $2 ) ); }
[84d58c5]573 | type_name '.' no_attr_identifier // CFA, nested type
[203c667]574 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[679e644]575 | type_name '.' '[' field_name_list ']' // CFA, nested type / tuple field selector
[203c667]576 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]577 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]578 {
579 // add the missing control expression to the GenericExpr and return it
580 $5->control = maybeMoveBuild<Expression>( $3 );
581 $$ = new ExpressionNode( $5 );
582 }
[24c3b67]583 ;
584
585generic_assoc_list: // C11
[d807ca28]586 generic_association
[24c3b67]587 | generic_assoc_list ',' generic_association
[d807ca28]588 {
589 // steal the association node from the singleton and delete the wrapper
590 $1->associations.splice($1->associations.end(), $3->associations);
591 delete $3;
592 $$ = $1;
593 }
[24c3b67]594 ;
595
596generic_association: // C11
597 type_no_function ':' assignment_expression
[d807ca28]598 {
599 // create a GenericExpr wrapper with one association pair
600 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>($3) } } );
601 }
[24c3b67]602 | DEFAULT ':' assignment_expression
[d807ca28]603 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>($3) } } ); }
[4d51835]604 ;
[51b73452]605
606postfix_expression:
[4d51835]607 primary_expression
[7fdb94e1]608 | postfix_expression '[' assignment_expression ']'
[c6b1105]609 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]610 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
611 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
612 // equivalent to the old x[i,j].
[7fdb94e1]613 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[bd3d9e4]614 | postfix_expression '{' argument_expression_list '}' // CFA, constructor call
615 {
616 Token fn;
617 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
618 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
619 }
[4d51835]620 | postfix_expression '(' argument_expression_list ')'
[d1625f8]621 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[4d51835]622 | postfix_expression '.' no_attr_identifier
[d1625f8]623 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]624 | postfix_expression '.' INTEGERconstant // CFA, tuple index
625 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]626 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
627 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[679e644]628 | postfix_expression '.' '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]629 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]630 | postfix_expression ARROW no_attr_identifier
[861799c7]631 {
632 $$ = new ExpressionNode( build_pfieldSel( $1, *$3 == "0" || *$3 == "1" ? build_constantInteger( *$3 ) : build_varref( $3 ) ) );
633 }
634 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
635 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[679e644]636 | postfix_expression ARROW '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]637 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]638 | postfix_expression ICR
[d1625f8]639 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]640 | postfix_expression DECR
[d1625f8]641 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]642 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]643 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]644 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]645 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[ecb27a7]646 | '^' primary_expression '{' argument_expression_list '}' // CFA
[097e2b0]647 {
[9706554]648 Token fn;
[ecb27a7]649 fn.str = new string( "^?{}" ); // location undefined
650 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]651 }
[4d51835]652 ;
[51b73452]653
654argument_expression_list:
[4d51835]655 argument_expression
656 | argument_expression_list ',' argument_expression
[1d4580a]657 { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]658 ;
[51b73452]659
660argument_expression:
[4d51835]661 // empty
[738e304]662 { $$ = nullptr; }
[679e644]663 | '?' // CFA, default parameter
664 { SemanticError( yylloc, "Default parameter for argument is currently unimplemented." ); $$ = nullptr; }
665 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]666 | assignment_expression
667 ;
[b87a5ed]668
[679e644]669field_name_list: // CFA, tuple field selector
[4d51835]670 field
[679e644]671 | field_name_list ',' field { $$ = (ExpressionNode *)$1->set_last( $3 ); }
[4d51835]672 ;
[b87a5ed]673
674field: // CFA, tuple field selector
[faddbd8]675 field_name
[930f69e]676 | FLOATING_DECIMALconstant field
677 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[679e644]678 | FLOATING_DECIMALconstant '[' field_name_list ']'
[7fdb94e1]679 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]680 | field_name '.' field
[bf32bb8]681 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]682 | field_name '.' '[' field_name_list ']'
[7fdb94e1]683 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]684 | field_name ARROW field
[bf32bb8]685 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]686 | field_name ARROW '[' field_name_list ']'
[7fdb94e1]687 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]688 ;
[51b73452]689
[faddbd8]690field_name:
[df22130]691 INTEGERconstant fraction_constants_opt
[8780e30]692 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]693 | FLOATINGconstant fraction_constants_opt
[8780e30]694 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[df22130]695 | no_attr_identifier fraction_constants_opt
[4cb935e]696 {
[84d58c5]697 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
698 }
[1b29996]699 ;
700
[df22130]701fraction_constants_opt:
[1b29996]702 // empty
[8780e30]703 { $$ = nullptr; }
[df22130]704 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]705 {
[930f69e]706 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]707 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
708 }
[faddbd8]709 ;
710
[51b73452]711unary_expression:
[4d51835]712 postfix_expression
[c6b1105]713 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
714 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]715 | constant
[ab57786]716 | string_literal
[d1625f8]717 { $$ = new ExpressionNode( $1 ); }
[4d51835]718 | EXTENSION cast_expression // GCC
[e04ef3a]719 { $$ = $2->set_extension( true ); }
[c6b1105]720 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
721 // { * X; } // dereference X
722 // { * int X; } // CFA declaration of pointer to int
[51e076e]723 | ptrref_operator cast_expression // CFA
[9706554]724 {
725 switch ( $1 ) {
[d9e2280]726 case OperKinds::AddressOf:
[db70fe4]727 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild< Expression >( $2 ) ) );
[9706554]728 break;
[d9e2280]729 case OperKinds::PointTo:
[d1625f8]730 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]731 break;
[5809461]732 case OperKinds::And:
[db70fe4]733 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild< Expression >( $2 ) ) ) );
[5809461]734 break;
[9706554]735 default:
736 assert( false );
737 }
738 }
[4d51835]739 | unary_operator cast_expression
[d1625f8]740 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]741 | ICR unary_expression
[d1625f8]742 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]743 | DECR unary_expression
[d1625f8]744 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]745 | SIZEOF unary_expression
[db70fe4]746 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild< Expression >( $2 ) ) ); }
[84d58c5]747 | SIZEOF '(' type_no_function ')'
[db70fe4]748 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]749 | ALIGNOF unary_expression // GCC, variable alignment
[db70fe4]750 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild< Expression >( $2 ) ) ); }
[a2e0687]751 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]752 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[84d58c5]753 | OFFSETOF '(' type_no_function ',' no_attr_identifier ')'
[d1625f8]754 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[4d51835]755 | ATTR_IDENTIFIER
[db70fe4]756 { $$ = new ExpressionNode( new AttrExpr( build_varref( $1 ), maybeMoveBuild< Expression >( (ExpressionNode *)nullptr ) ) ); }
[4d51835]757 | ATTR_IDENTIFIER '(' argument_expression ')'
[db70fe4]758 { $$ = new ExpressionNode( new AttrExpr( build_varref( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[84d58c5]759 | ATTR_IDENTIFIER '(' type ')'
[db70fe4]760 { $$ = new ExpressionNode( new AttrExpr( build_varref( $1 ), maybeMoveBuildType( $3 ) ) ); }
[4d51835]761 ;
[51b73452]762
[dd51906]763ptrref_operator:
[d9e2280]764 '*' { $$ = OperKinds::PointTo; }
765 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]766 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]767 | ANDAND { $$ = OperKinds::And; }
[dd51906]768 ;
769
[51b73452]770unary_operator:
[d9e2280]771 '+' { $$ = OperKinds::UnPlus; }
772 | '-' { $$ = OperKinds::UnMinus; }
773 | '!' { $$ = OperKinds::Neg; }
774 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]775 ;
[51b73452]776
777cast_expression:
[4d51835]778 unary_expression
[84d58c5]779 | '(' type_no_function ')' cast_expression
[d1625f8]780 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[fae90d5f]781 | '(' COROUTINE '&' ')' cast_expression // CFA
[9a705dc8]782 { $$ = new ExpressionNode( build_keyword_cast( KeywordCastExpr::Coroutine, $5 ) ); }
[fae90d5f]783 | '(' THREAD '&' ')' cast_expression // CFA
[9a705dc8]784 { $$ = new ExpressionNode( build_keyword_cast( KeywordCastExpr::Thread, $5 ) ); }
[fae90d5f]785 | '(' MONITOR '&' ')' cast_expression // CFA
[9a705dc8]786 { $$ = new ExpressionNode( build_keyword_cast( KeywordCastExpr::Monitor, $5 ) ); }
[72457b6]787 // VIRTUAL cannot be opt because of look ahead issues
[fae90d5f]788 | '(' VIRTUAL ')' cast_expression // CFA
[513e165]789 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild< Expression >( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]790 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[513e165]791 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild< Expression >( $5 ), maybeMoveBuildType( $3 ) ) ); }
[84d58c5]792// | '(' type_no_function ')' tuple
[1b29996]793// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]794 ;
[51b73452]795
[994d080]796exponential_expression:
[4d51835]797 cast_expression
[994d080]798 | exponential_expression '\\' cast_expression
[e5f2a67]799 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]800 ;
801
802multiplicative_expression:
803 exponential_expression
804 | multiplicative_expression '*' exponential_expression
[d1625f8]805 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]806 | multiplicative_expression '/' exponential_expression
[d1625f8]807 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]808 | multiplicative_expression '%' exponential_expression
[d1625f8]809 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]810 ;
[51b73452]811
812additive_expression:
[4d51835]813 multiplicative_expression
814 | additive_expression '+' multiplicative_expression
[d1625f8]815 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]816 | additive_expression '-' multiplicative_expression
[d1625f8]817 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]818 ;
[51b73452]819
820shift_expression:
[4d51835]821 additive_expression
822 | shift_expression LS additive_expression
[d1625f8]823 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]824 | shift_expression RS additive_expression
[d1625f8]825 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]826 ;
[51b73452]827
828relational_expression:
[4d51835]829 shift_expression
830 | relational_expression '<' shift_expression
[d1625f8]831 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]832 | relational_expression '>' shift_expression
[d1625f8]833 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]834 | relational_expression LE shift_expression
[d1625f8]835 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]836 | relational_expression GE shift_expression
[d1625f8]837 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]838 ;
[51b73452]839
840equality_expression:
[4d51835]841 relational_expression
842 | equality_expression EQ relational_expression
[d1625f8]843 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]844 | equality_expression NE relational_expression
[d1625f8]845 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]846 ;
[51b73452]847
848AND_expression:
[4d51835]849 equality_expression
850 | AND_expression '&' equality_expression
[d1625f8]851 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]852 ;
[51b73452]853
854exclusive_OR_expression:
[4d51835]855 AND_expression
856 | exclusive_OR_expression '^' AND_expression
[d1625f8]857 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]858 ;
[51b73452]859
860inclusive_OR_expression:
[4d51835]861 exclusive_OR_expression
862 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]863 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]864 ;
[51b73452]865
866logical_AND_expression:
[4d51835]867 inclusive_OR_expression
868 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]869 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]870 ;
[51b73452]871
872logical_OR_expression:
[4d51835]873 logical_AND_expression
874 | logical_OR_expression OROR logical_AND_expression
[d1625f8]875 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]876 ;
[51b73452]877
878conditional_expression:
[4d51835]879 logical_OR_expression
880 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]881 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]882 // FIX ME: computes $1 twice
[4d51835]883 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]884 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]885 ;
[51b73452]886
887constant_expression:
[4d51835]888 conditional_expression
889 ;
[51b73452]890
891assignment_expression:
[4d51835]892 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
893 conditional_expression
894 | unary_expression assignment_operator assignment_expression
[cda7889]895 { $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) ); }
[7fdb94e1]896 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]897 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]898 ;
[51b73452]899
900assignment_expression_opt:
[4d51835]901 // empty
[d1625f8]902 { $$ = nullptr; }
[4d51835]903 | assignment_expression
904 ;
[b87a5ed]905
[9706554]906assignment_operator:
[d9e2280]907 '=' { $$ = OperKinds::Assign; }
[a839867]908 | ATassign { $$ = OperKinds::AtAssn; }
[e5f2a67]909 | EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]910 | MULTassign { $$ = OperKinds::MulAssn; }
911 | DIVassign { $$ = OperKinds::DivAssn; }
912 | MODassign { $$ = OperKinds::ModAssn; }
913 | PLUSassign { $$ = OperKinds::PlusAssn; }
914 | MINUSassign { $$ = OperKinds::MinusAssn; }
915 | LSassign { $$ = OperKinds::LSAssn; }
916 | RSassign { $$ = OperKinds::RSAssn; }
917 | ANDassign { $$ = OperKinds::AndAssn; }
918 | ERassign { $$ = OperKinds::ERAssn; }
919 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]920 ;
[9706554]921
[b87a5ed]922tuple: // CFA, tuple
[de62360d]923 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]924 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]925// '[' ']'
926// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]927// | '[' push assignment_expression pop ']'
[1b29996]928// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]929 '[' ',' tuple_expression_list ']'
930 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
931 | '[' push assignment_expression pop ',' tuple_expression_list ']'
932 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)$3->set_last( $6 ) ) ); }
[4d51835]933 ;
[51b73452]934
935tuple_expression_list:
[4d51835]936 assignment_expression_opt
937 | tuple_expression_list ',' assignment_expression_opt
[1d4580a]938 { $$ = (ExpressionNode *)$1->set_last( $3 ); }
[4d51835]939 ;
[51b73452]940
941comma_expression:
[4d51835]942 assignment_expression
[9706554]943 | comma_expression ',' assignment_expression
[513e165]944 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild< Expression >( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[4d51835]945 ;
[51b73452]946
947comma_expression_opt:
[4d51835]948 // empty
[58dd019]949 { $$ = nullptr; }
[4d51835]950 | comma_expression
951 ;
[51b73452]952
[c11e31c]953//*************************** STATEMENTS *******************************
[51b73452]954
955statement:
[4d51835]956 labeled_statement
957 | compound_statement
[c0a33d2]958 | expression_statement
[4d51835]959 | selection_statement
960 | iteration_statement
961 | jump_statement
[8b47e50]962 | with_statement
[b6b3c42]963 | mutex_statement
[5b2edbc]964 | waitfor_statement
[4d51835]965 | exception_statement
[2a8427c6]966 | enable_disable_statement
[fae90d5f]967 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]968 | asm_statement
[61fc4f6]969 | DIRECTIVE
[6d539f83]970 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]971 ;
[51b73452]972
973labeled_statement:
[44a81853]974 // labels cannot be identifiers 0 or 1 or ATTR_IDENTIFIER
975 identifier_or_type_name ':' attribute_list_opt statement
[1db21619]976 {
[44a81853]977 $$ = $4->add_label( $1, $3 );
[1db21619]978 }
[4d51835]979 ;
[51b73452]980
981compound_statement:
[4d51835]982 '{' '}'
[e82aa9df]983 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]984 | '{' push
[51b1202]985 local_label_declaration_opt // GCC, local labels
[9bd6105]986 statement_decl_list // C99, intermix declarations and statements
[c0aa336]987 pop '}'
[35718a9]988 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]989 ;
[b87a5ed]990
[9bd6105]991statement_decl_list: // C99
992 statement_decl
[35718a9]993 | statement_decl_list statement_decl
994 { if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } }
[4d51835]995 ;
[51b73452]996
[9bd6105]997statement_decl:
[4d51835]998 declaration // CFA, new & old style declarations
[e82aa9df]999 { $$ = new StatementNode( $1 ); }
[4d51835]1000 | EXTENSION declaration // GCC
[c0aa336]1001 {
1002 distExt( $2 );
[e82aa9df]1003 $$ = new StatementNode( $2 );
[8e9cbb2]1004 }
[4d51835]1005 | function_definition
[e82aa9df]1006 { $$ = new StatementNode( $1 ); }
[c0aa336]1007 | EXTENSION function_definition // GCC
1008 {
1009 distExt( $2 );
1010 $$ = new StatementNode( $2 );
1011 }
[35718a9]1012 | statement
[4d51835]1013 ;
[51b73452]1014
[9bd6105]1015statement_list_nodecl:
[4d51835]1016 statement
[9bd6105]1017 | statement_list_nodecl statement
[1d4580a]1018 { if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } }
[4d51835]1019 ;
[51b73452]1020
1021expression_statement:
[4d51835]1022 comma_expression_opt ';'
[e82aa9df]1023 { $$ = new StatementNode( build_expr( $1 ) ); }
[4d51835]1024 ;
[51b73452]1025
1026selection_statement:
[3d26610]1027 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1028 // the inherent S/R conflict with THEN/ELSE.
1029 push if_statement pop
1030 { $$ = $2; }
[4cc585b]1031 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1032 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1033 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1034 {
[6a276a0]1035 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1036 // The semantics of the declaration list is changed to include associated initialization, which is performed
1037 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1038 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1039 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1040 // statement.
[a7741435]1041 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1042 }
[4d51835]1043 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1044 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1045 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1046 {
[6a276a0]1047 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1048 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1049 }
[4d51835]1050 ;
[b87a5ed]1051
[3d26610]1052if_statement:
1053 IF '(' if_control_expression ')' statement %prec THEN
1054 // explicitly deal with the shift/reduce conflict on if/else
1055 { $$ = new StatementNode( build_if( $3, $5, nullptr ) ); }
1056 | IF '(' if_control_expression ')' statement ELSE statement
1057 { $$ = new StatementNode( build_if( $3, $5, $7 ) ); }
1058 ;
1059
[936e9f4]1060if_control_expression:
[35718a9]1061 comma_expression
[f271bdd]1062 { $$ = new IfCtrl( nullptr, $1 ); }
[35718a9]1063 | c_declaration // no semi-colon
[f271bdd]1064 { $$ = new IfCtrl( $1, nullptr ); }
[35718a9]1065 | cfa_declaration // no semi-colon
[f271bdd]1066 { $$ = new IfCtrl( $1, nullptr ); }
[6d49ea3]1067 | declaration comma_expression // semi-colon separated
[f271bdd]1068 { $$ = new IfCtrl( $1, $2 ); }
[936e9f4]1069 ;
1070
[de62360d]1071// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1072// clause allows a list of values and subranges.
[b87a5ed]1073
1074case_value: // CFA
[4d51835]1075 constant_expression { $$ = $1; }
1076 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[db70fe4]1077 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[4d51835]1078 | subrange // CFA, subrange
1079 ;
[b87a5ed]1080
1081case_value_list: // CFA
[e82aa9df]1082 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1083 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1084 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1085 ;
[b87a5ed]1086
1087case_label: // CFA
[8688ce1]1088 CASE case_value_list ':' { $$ = $2; }
[e82aa9df]1089 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1090 // A semantic check is required to ensure only one default clause per switch/choose statement.
1091 ;
[b87a5ed]1092
[6a276a0]1093//label_list_opt:
1094// // empty
1095// | identifier_or_type_name ':'
1096// | label_list_opt identifier_or_type_name ':'
1097// ;
1098
[b87a5ed]1099case_label_list: // CFA
[4d51835]1100 case_label
[1d4580a]1101 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1102 ;
[b87a5ed]1103
1104case_clause: // CFA
[e82aa9df]1105 case_label_list statement { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[4d51835]1106 ;
[b87a5ed]1107
1108switch_clause_list_opt: // CFA
[4d51835]1109 // empty
[58dd019]1110 { $$ = nullptr; }
[4d51835]1111 | switch_clause_list
1112 ;
[b87a5ed]1113
1114switch_clause_list: // CFA
[9bd6105]1115 case_label_list statement_list_nodecl
[e82aa9df]1116 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1117 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1118 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1119 ;
[b87a5ed]1120
[51b73452]1121iteration_statement:
[401e61f]1122 WHILE '(' push if_control_expression ')' statement pop
1123 { $$ = new StatementNode( build_while( $4, $6 ) ); }
[f271bdd]1124 | WHILE '(' ')' statement // CFA => while ( 1 )
1125 { $$ = new StatementNode( build_while( new IfCtrl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), $4 ) ); }
[4d51835]1126 | DO statement WHILE '(' comma_expression ')' ';'
[401e61f]1127 { $$ = new StatementNode( build_do_while( $5, $2 ) ); }
[f271bdd]1128 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
1129 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), $2 ) ); }
[35718a9]1130 | FOR '(' push for_control_expression ')' statement pop
[e82aa9df]1131 { $$ = new StatementNode( build_for( $4, $6 ) ); }
[4d51835]1132 ;
[51b73452]1133
1134for_control_expression:
[f271bdd]1135 comma_expression_opt // CFA
1136 {
1137 if ( ! $1 ) { // => for ( ;; )
1138 $$ = new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr );
1139 } else {
[cc22003]1140 $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ), OperKinds::LThan, $1->clone(),
[f271bdd]1141 new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) );
1142 } // if
1143 }
[cc22003]1144 | constant_expression inclexcl constant_expression // CFA
1145 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1146 | constant_expression inclexcl constant_expression '~' constant_expression // CFA
1147 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[f271bdd]1148 | comma_expression_opt ';' comma_expression // CFA
1149 {
1150 if ( ! $1 ) {
1151 SemanticError( yylloc, "Missing loop index." ); $$ = nullptr;
1152 } else if ( ! $3 ) {
1153 SemanticError( yylloc, "Missing loop range." ); $$ = nullptr;
1154 } else {
1155 if ( NameExpr *identifier = dynamic_cast<NameExpr *>($1->get_expr()) ) {
[cc22003]1156 $$ = forCtrl( $3, new string( identifier->name ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ), OperKinds::LThan, $3->clone(),
[f271bdd]1157 new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) );
1158 } else {
1159 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed" ); $$ = nullptr;
1160 } // if
1161 } // if
1162 }
[cc22003]1163 | comma_expression_opt ';' constant_expression inclexcl constant_expression // CFA
[f271bdd]1164 {
1165 if ( ! $1 ) {
1166 SemanticError( yylloc, "Missing loop index." ); $$ = nullptr;
1167 } else {
1168 if ( NameExpr *identifier = dynamic_cast<NameExpr *>($1->get_expr()) ) {
[cc22003]1169 $$ = forCtrl( $3, new string( identifier->name ), $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) );
[f271bdd]1170 } else {
1171 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed" ); $$ = nullptr;
1172 } // if
1173 } // if
1174 }
[cc22003]1175 | comma_expression_opt ';' constant_expression inclexcl constant_expression '~' constant_expression // CFA
[f271bdd]1176 {
1177 if ( ! $1 ) {
1178 SemanticError( yylloc, "Missing loop index." ); $$ = nullptr;
1179 } else {
1180 if ( NameExpr *identifier = dynamic_cast<NameExpr *>($1->get_expr()) ) {
[cc22003]1181 $$ = forCtrl( $3, new string( identifier->name ), $3->clone(), $4, $5, $7 );
[f271bdd]1182 } else {
1183 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed" ); $$ = nullptr;
1184 } // if
1185 } // if
1186 }
1187 | comma_expression_opt ';' comma_expression_opt ';' comma_expression_opt
1188 { $$ = new ForCtrl( $1, $3, $5 ); }
1189 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1190 { $$ = new ForCtrl( $1, $2, $4 ); }
[d1625f8]1191 ;
[51b73452]1192
[cc22003]1193inclexcl:
1194 '~'
1195 { $$ = OperKinds::LThan; }
1196 | Erange
1197 { $$ = OperKinds::LEThan; }
1198 ;
1199
[51b73452]1200jump_statement:
[44a81853]1201 GOTO identifier_or_type_name ';'
[ab57786]1202 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1203 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1204 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1205 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1206 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1207 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
1208 | fall_through_name ';' // CFA
1209 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
1210 | fall_through_name identifier_or_type_name ';' // CFA
1211 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1212 | fall_through_name DEFAULT ';' // CFA
1213 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1214 | CONTINUE ';'
[de62360d]1215 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1216 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1217 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1218 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1219 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1220 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1221 | BREAK ';'
[de62360d]1222 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1223 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1224 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1225 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1226 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1227 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1228 | RETURN comma_expression_opt ';'
[e82aa9df]1229 { $$ = new StatementNode( build_return( $2 ) ); }
[7fdb94e1]1230 | RETURN '{' initializer_list_opt comma_opt '}'
[fae90d5f]1231 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[8cc5cb0]1232 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1233 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1234 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1235 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1236 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1237 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1238 ;
[51b73452]1239
[6a276a0]1240fall_through_name: // CFA
1241 FALLTHRU
1242 | FALLTHROUGH
1243 ;
1244
[8b47e50]1245with_statement:
[5b2edbc]1246 WITH '(' tuple_expression_list ')' statement
[a378ca7]1247 {
1248 $$ = new StatementNode( build_with( $3, $5 ) );
1249 }
[5b2edbc]1250 ;
1251
[b6b3c42]1252// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1253mutex_statement:
1254 MUTEX '(' argument_expression_list ')' statement
[fae90d5f]1255 { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; }
[b6b3c42]1256 ;
1257
[51d6d6a]1258when_clause:
[6a276a0]1259 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1260 ;
1261
[5b2edbc]1262when_clause_opt:
1263 // empty
[135b431]1264 { $$ = nullptr; }
[51d6d6a]1265 | when_clause
[5b2edbc]1266 ;
1267
1268waitfor:
[713926ca]1269 WAITFOR '(' cast_expression ')'
1270 { $$ = $3; }
1271 | WAITFOR '(' cast_expression ',' argument_expression_list ')'
1272 { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[5b2edbc]1273 ;
1274
1275timeout:
[6a276a0]1276 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1277 ;
1278
1279waitfor_clause:
[51d6d6a]1280 when_clause_opt waitfor statement %prec THEN
[135b431]1281 { $$ = build_waitfor( $2, $3, $1 ); }
[5b2edbc]1282 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1283 { $$ = build_waitfor( $2, $3, $1, $5 ); }
[51d6d6a]1284 | when_clause_opt timeout statement %prec THEN
[135b431]1285 { $$ = build_waitfor_timeout( $2, $3, $1 ); }
[5b2edbc]1286 | when_clause_opt ELSE statement
[135b431]1287 { $$ = build_waitfor_timeout( nullptr, $3, $1 ); }
[51d6d6a]1288 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
[713926ca]1289 | when_clause_opt timeout statement WOR ELSE statement
1290 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1291 | when_clause_opt timeout statement WOR when_clause ELSE statement
[135b431]1292 { $$ = build_waitfor_timeout( $2, $3, $1, $7, $5 ); }
[5b2edbc]1293 ;
1294
1295waitfor_statement:
[51d6d6a]1296 when_clause_opt waitfor statement %prec THEN
[135b431]1297 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1298 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1299 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1300 ;
1301
[51b73452]1302exception_statement:
[cfaabe2c]1303 TRY compound_statement handler_clause
[e82aa9df]1304 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1305 | TRY compound_statement finally_clause
[e82aa9df]1306 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1307 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1308 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1309 ;
[51b73452]1310
1311handler_clause:
[098f7ff]1312 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1313 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1314 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1315 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1316 ;
1317
1318handler_predicate_opt:
[7fdb94e1]1319 // empty
[cbce272]1320 { $$ = nullptr; }
[6a276a0]1321 | ';' conditional_expression { $$ = $2; }
[307a732]1322 ;
1323
1324handler_key:
[6a276a0]1325 CATCH { $$ = CatchStmt::Terminate; }
1326 | CATCHRESUME { $$ = CatchStmt::Resume; }
[4d51835]1327 ;
[51b73452]1328
1329finally_clause:
[6a276a0]1330 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1331 ;
[51b73452]1332
1333exception_declaration:
[d0ffed1]1334 // No SUE declaration in parameter list.
1335 type_specifier_nobody
1336 | type_specifier_nobody declarator
[c0a33d2]1337 { $$ = $2->addType( $1 ); }
[d0ffed1]1338 | type_specifier_nobody variable_abstract_declarator
[4d51835]1339 { $$ = $2->addType( $1 ); }
[c0aa336]1340 | cfa_abstract_declarator_tuple no_attr_identifier // CFA
[c0a33d2]1341 { $$ = $1->addName( $2 ); }
[c0aa336]1342 | cfa_abstract_declarator_tuple // CFA
[4d51835]1343 ;
[51b73452]1344
[2a8427c6]1345enable_disable_statement:
1346 enable_disable_key identifier_list compound_statement
1347 ;
1348
1349enable_disable_key:
1350 ENABLE
1351 | DISABLE
1352 ;
1353
[51b73452]1354asm_statement:
[ab57786]1355 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1356 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1357 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1358 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1359 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1360 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1361 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1362 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1363 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1364 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1365 ;
1366
1367asm_volatile_opt: // GCC
1368 // empty
1369 { $$ = false; }
1370 | VOLATILE
1371 { $$ = true; }
[4d51835]1372 ;
[b87a5ed]1373
1374asm_operands_opt: // GCC
[4d51835]1375 // empty
[58dd019]1376 { $$ = nullptr; } // use default argument
[4d51835]1377 | asm_operands_list
1378 ;
[b87a5ed]1379
1380asm_operands_list: // GCC
[4d51835]1381 asm_operand
1382 | asm_operands_list ',' asm_operand
[1d4580a]1383 { $$ = (ExpressionNode *)$1->set_last( $3 ); }
[4d51835]1384 ;
[b87a5ed]1385
1386asm_operand: // GCC
[ab57786]1387 string_literal '(' constant_expression ')'
[513e165]1388 { $$ = new ExpressionNode( new AsmExpr( maybeMoveBuild< Expression >( (ExpressionNode *)nullptr ), $1, maybeMoveBuild< Expression >( $3 ) ) ); }
[ab57786]1389 | '[' constant_expression ']' string_literal '(' constant_expression ')'
[513e165]1390 { $$ = new ExpressionNode( new AsmExpr( maybeMoveBuild< Expression >( $2 ), $4, maybeMoveBuild< Expression >( $6 ) ) ); }
[7f5566b]1391 ;
1392
[4e06c1e]1393asm_clobbers_list_opt: // GCC
[7f5566b]1394 // empty
[58dd019]1395 { $$ = nullptr; } // use default argument
[ab57786]1396 | string_literal
[d1625f8]1397 { $$ = new ExpressionNode( $1 ); }
[ab57786]1398 | asm_clobbers_list_opt ',' string_literal
[513e165]1399 // set_last returns ParseNode *
[e82aa9df]1400 { $$ = (ExpressionNode *)$1->set_last( new ExpressionNode( $3 ) ); }
[4d51835]1401 ;
[b87a5ed]1402
[7f5566b]1403label_list:
1404 no_attr_identifier
[ab57786]1405 {
1406 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1407 delete $1; // allocated by lexer
1408 }
[7f5566b]1409 | label_list ',' no_attr_identifier
[ab57786]1410 {
1411 $$ = $1; $1->labels.push_back( *$3 );
1412 delete $3; // allocated by lexer
1413 }
[4d51835]1414 ;
[51b73452]1415
[c11e31c]1416//******************************* DECLARATIONS *********************************
[51b73452]1417
[b87a5ed]1418declaration_list_opt: // used at beginning of switch statement
[35718a9]1419 // empty
[58dd019]1420 { $$ = nullptr; }
[4d51835]1421 | declaration_list
1422 ;
[51b73452]1423
1424declaration_list:
[4d51835]1425 declaration
[35718a9]1426 | declaration_list declaration
1427 { $$ = $1->appendList( $2 ); }
[4d51835]1428 ;
[51b73452]1429
[407bde5]1430KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1431 // empty
[58dd019]1432 { $$ = nullptr; }
[35718a9]1433 | KR_parameter_list
[4d51835]1434 ;
[51b73452]1435
[35718a9]1436KR_parameter_list:
[4cc585b]1437 push c_declaration pop ';'
1438 { $$ = $2; }
[35718a9]1439 | KR_parameter_list push c_declaration pop ';'
[4d51835]1440 { $$ = $1->appendList( $3 ); }
1441 ;
[b87a5ed]1442
[51b1202]1443local_label_declaration_opt: // GCC, local label
[4d51835]1444 // empty
[51b1202]1445 | local_label_declaration_list
[4d51835]1446 ;
[b87a5ed]1447
[51b1202]1448local_label_declaration_list: // GCC, local label
1449 LABEL local_label_list ';'
1450 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1451 ;
[b87a5ed]1452
[51b1202]1453local_label_list: // GCC, local label
[c0a33d2]1454 no_attr_identifier_or_type_name
1455 | local_label_list ',' no_attr_identifier_or_type_name
[4d51835]1456 ;
[b87a5ed]1457
[936e9f4]1458declaration: // old & new style declarations
[35718a9]1459 c_declaration ';'
1460 | cfa_declaration ';' // CFA
[b47b827]1461 | static_assert // C11
[4d51835]1462 ;
[b87a5ed]1463
[b9be000b]1464static_assert:
1465 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1466 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1467 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1468 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1469
[de62360d]1470// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1471// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1472// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1473// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1474// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1475// block, but cannot be mixed within a specific declaration.
[c11e31c]1476//
[b87a5ed]1477// CFA C
1478// [10] int x; int x[10]; // array of 10 integers
1479// [10] * char y; char *y[10]; // array of 10 pointers to char
1480
[c0aa336]1481cfa_declaration: // CFA
[4cc585b]1482 cfa_variable_declaration
1483 | cfa_typedef_declaration
1484 | cfa_function_declaration
1485 | type_declaring_list
1486 | trait_specifier
[4d51835]1487 ;
[b87a5ed]1488
[c0aa336]1489cfa_variable_declaration: // CFA
1490 cfa_variable_specifier initializer_opt
[7fdb94e1]1491 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1492 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1493 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1494 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1495 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1496 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1497 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1498 ;
[b87a5ed]1499
[c0aa336]1500cfa_variable_specifier: // CFA
[de62360d]1501 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1502 // storage-class
[c0aa336]1503 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1504 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1505 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1506 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1507 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1508 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1509 ;
[b87a5ed]1510
[c0aa336]1511cfa_function_declaration: // CFA
1512 cfa_function_specifier
1513 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1514 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1515 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1516 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1517 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1518 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1519 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1520 {
[481115f]1521 // Append the return type at the start (left-hand-side) to each identifier in the list.
1522 DeclarationNode * ret = new DeclarationNode;
1523 ret->type = maybeClone( $1->type->base );
[40de461]1524 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1525 }
1526 ;
[b87a5ed]1527
[c0aa336]1528cfa_function_specifier: // CFA
[40de461]1529// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1530// {
1531// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1532// }
[40de461]1533// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1534// {
1535// typedefTable.setNextIdentifier( *$5 );
1536// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1537// }
[40de461]1538// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1539// {
1540// typedefTable.setNextIdentifier( *$5 );
1541// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1542// }
1543// | '[' ']' typegen_name
1544 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1545 //
[40de461]1546 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1547 // '[' ']' type_specifier
1548 //
[2871210]1549 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1550 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[40de461]1551 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0aa336]1552 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c0a33d2]1553 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 ); }
[40de461]1554 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]1555 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 ); }
[4d51835]1556 ;
[b87a5ed]1557
[c0aa336]1558cfa_function_return: // CFA
[c0a33d2]1559 '[' push cfa_parameter_list pop ']'
1560 { $$ = DeclarationNode::newTuple( $3 ); }
1561 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1562 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1563 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1564 ;
[b87a5ed]1565
[c0aa336]1566cfa_typedef_declaration: // CFA
1567 TYPEDEF cfa_variable_specifier
[4d51835]1568 {
[ecae5860]1569 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1570 $$ = $2->addTypedef();
1571 }
[c0aa336]1572 | TYPEDEF cfa_function_specifier
[4d51835]1573 {
[ecae5860]1574 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1575 $$ = $2->addTypedef();
1576 }
[c0aa336]1577 | cfa_typedef_declaration pop ',' push no_attr_identifier
[4d51835]1578 {
[ecae5860]1579 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1580 $$ = $1->appendList( $1->cloneType( $5 ) );
1581 }
1582 ;
[b87a5ed]1583
[de62360d]1584// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1585// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1586
1587typedef_declaration:
[4d51835]1588 TYPEDEF type_specifier declarator
1589 {
[ecae5860]1590 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1591 $$ = $3->addType( $2 )->addTypedef();
1592 }
1593 | typedef_declaration pop ',' push declarator
1594 {
[ecae5860]1595 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1596 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1597 }
[de62360d]1598 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1599 {
[ecae5860]1600 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1601 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1602 }
1603 | type_specifier TYPEDEF declarator
1604 {
[ecae5860]1605 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1606 $$ = $3->addType( $1 )->addTypedef();
1607 }
1608 | type_specifier TYPEDEF type_qualifier_list declarator
1609 {
[ecae5860]1610 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1611 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1612 }
1613 ;
[b87a5ed]1614
[721f17a]1615typedef_expression:
1616 // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[4d51835]1617 TYPEDEF no_attr_identifier '=' assignment_expression
1618 {
[7fdb94e1]1619 // $$ = DeclarationNode::newName( 0 ); // unimplemented
1620 SemanticError( yylloc, "Typedef expression is currently unimplemented." ); $$ = nullptr;
[4d51835]1621 }
1622 | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression
1623 {
[7fdb94e1]1624 // $$ = DeclarationNode::newName( 0 ); // unimplemented
1625 SemanticError( yylloc, "Typedef expression is currently unimplemented." ); $$ = nullptr;
[4d51835]1626 }
1627 ;
[51b73452]1628
[c0aa336]1629//c_declaration:
1630// declaring_list pop ';'
1631// | typedef_declaration pop ';'
1632// | typedef_expression pop ';' // GCC, naming expression type
1633// | sue_declaration_specifier pop ';'
1634// ;
1635//
1636//declaring_list:
1637// // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1638// // storage-class
1639// declarator asm_name_opt initializer_opt
1640// {
[2f0a0678]1641// typedefTable.addToEnclosingScope( IDENTIFIER );
[c0aa336]1642// $$ = ( $2->addType( $1 ))->addAsmName( $3 )->addInitializer( $4 );
1643// }
1644// | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
1645// {
[2f0a0678]1646// typedefTable.addToEnclosingScope( IDENTIFIER );
[c0aa336]1647// $$ = $1->appendList( $1->cloneBaseType( $4->addAsmName( $5 )->addInitializer( $6 ) ) );
1648// }
1649// ;
1650
1651c_declaration:
[4cc585b]1652 declaration_specifier declaring_list
[7fdb94e1]1653 { $$ = distAttr( $1, $2 ); }
[4cc585b]1654 | typedef_declaration
1655 | typedef_expression // GCC, naming expression type
1656 | sue_declaration_specifier
[4d51835]1657 ;
[51b73452]1658
1659declaring_list:
[de62360d]1660 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1661 // storage-class
[c0aa336]1662 declarator asm_name_opt initializer_opt
[7fdb94e1]1663 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1664 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1665 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1666 ;
[b87a5ed]1667
1668declaration_specifier: // type specifier + storage class
[4d51835]1669 basic_declaration_specifier
1670 | sue_declaration_specifier
[84d58c5]1671 | type_declaration_specifier
[4d51835]1672 ;
[b87a5ed]1673
[d0ffed1]1674declaration_specifier_nobody: // type specifier + storage class - {...}
1675 // Preclude SUE declarations in restricted scopes:
1676 //
1677 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1678 //
1679 // because it is impossible to call f due to name equivalence.
1680 basic_declaration_specifier
1681 | sue_declaration_specifier_nobody
[84d58c5]1682 | type_declaration_specifier
[d0ffed1]1683 ;
1684
1685type_specifier: // type specifier
[4d51835]1686 basic_type_specifier
1687 | sue_type_specifier
[84d58c5]1688 | type_type_specifier
[4d51835]1689 ;
[b87a5ed]1690
[d0ffed1]1691type_specifier_nobody: // type specifier - {...}
1692 // Preclude SUE declarations in restricted scopes:
1693 //
1694 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1695 //
1696 // because it is impossible to call f due to name equivalence.
1697 basic_type_specifier
1698 | sue_type_specifier_nobody
[84d58c5]1699 | type_type_specifier
[d0ffed1]1700 ;
1701
[b87a5ed]1702type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1703 // empty
[58dd019]1704 { $$ = nullptr; }
[4d51835]1705 | type_qualifier_list
1706 ;
[51b73452]1707
1708type_qualifier_list:
[de62360d]1709 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1710 //
[de62360d]1711 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1712 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1713 // appeared only once.
[4d51835]1714 type_qualifier
1715 | type_qualifier_list type_qualifier
1716 { $$ = $1->addQualifiers( $2 ); }
1717 ;
[51b73452]1718
1719type_qualifier:
[4d51835]1720 type_qualifier_name
1721 | attribute
1722 ;
[51b73452]1723
1724type_qualifier_name:
[4d51835]1725 CONST
[738e304]1726 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1727 | RESTRICT
[738e304]1728 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1729 | VOLATILE
[738e304]1730 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1731 | ATOMIC
[738e304]1732 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1733 | forall
1734 ;
1735
1736forall:
[35718a9]1737 FORALL '(' type_parameter_list ')' // CFA
1738 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1739 ;
[51b73452]1740
1741declaration_qualifier_list:
[4d51835]1742 storage_class_list
[de62360d]1743 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1744 { $$ = $1->addQualifiers( $2 ); }
1745 | declaration_qualifier_list type_qualifier_list storage_class_list
1746 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1747 ;
[51b73452]1748
1749storage_class_list:
[de62360d]1750 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1751 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1752 //
[de62360d]1753 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1754 // specifiers in a declaration.
[4d51835]1755 storage_class
1756 | storage_class_list storage_class
1757 { $$ = $1->addQualifiers( $2 ); }
1758 ;
[51b73452]1759
1760storage_class:
[4d51835]1761 EXTERN
[68fe077a]1762 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1763 | STATIC
[68fe077a]1764 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1765 | AUTO
[68fe077a]1766 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1767 | REGISTER
[68fe077a]1768 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1769 | THREADLOCAL // C11
[68fe077a]1770 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1771 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1772 | INLINE // C99
[ddfd945]1773 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1774 | FORTRAN // C99
[ddfd945]1775 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1776 | NORETURN // C11
[ddfd945]1777 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1778 ;
[51b73452]1779
1780basic_type_name:
[201aeb9]1781 VOID
[4d51835]1782 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1783 | BOOL // C99
1784 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1785 | CHAR
1786 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1787 | INT
1788 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1789 | INT128
1790 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
1791 | FLOAT
1792 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1793 | FLOAT80
1794 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float80 ); }
1795 | FLOAT128
1796 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float128 ); }
1797 | DOUBLE
1798 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[4d51835]1799 | COMPLEX // C99
[5b639ee]1800 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1801 | IMAGINARY // C99
[5b639ee]1802 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1803 | SIGNED
1804 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1805 | UNSIGNED
1806 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1807 | SHORT
1808 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1809 | LONG
1810 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1811 | VALIST // GCC, __builtin_va_list
1812 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[4d51835]1813 ;
[51b73452]1814
1815basic_declaration_specifier:
[4d51835]1816 // A semantic check is necessary for conflicting storage classes.
1817 basic_type_specifier
1818 | declaration_qualifier_list basic_type_specifier
1819 { $$ = $2->addQualifiers( $1 ); }
1820 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1821 { $$ = $1->addQualifiers( $2 ); }
1822 | basic_declaration_specifier storage_class type_qualifier_list
1823 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1824 | basic_declaration_specifier storage_class basic_type_specifier
1825 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1826 ;
[51b73452]1827
1828basic_type_specifier:
[84d58c5]1829 direct_type
[f38e7d7]1830 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1831 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1832 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1833 ;
[51b73452]1834
[84d58c5]1835direct_type:
[4d51835]1836 basic_type_name
1837 | type_qualifier_list basic_type_name
1838 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1839 | direct_type type_qualifier
[4d51835]1840 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1841 | direct_type basic_type_name
[4d51835]1842 { $$ = $1->addType( $2 ); }
1843 ;
[51b73452]1844
[84d58c5]1845indirect_type:
1846 TYPEOF '(' type ')' // GCC: typeof(x) y;
[4d51835]1847 { $$ = $3; }
1848 | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y;
1849 { $$ = DeclarationNode::newTypeof( $3 ); }
[84d58c5]1850 | ATTR_TYPEGENname '(' type ')' // CFA: e.g., @type(x) y;
[4d51835]1851 { $$ = DeclarationNode::newAttr( $1, $3 ); }
1852 | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y;
1853 { $$ = DeclarationNode::newAttr( $1, $3 ); }
[f38e7d7]1854 | ZERO_T // CFA
1855 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1856 | ONE_T // CFA
1857 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1858 ;
[51b73452]1859
[d0ffed1]1860sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1861 sue_type_specifier
1862 | declaration_qualifier_list sue_type_specifier
1863 { $$ = $2->addQualifiers( $1 ); }
1864 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1865 { $$ = $1->addQualifiers( $2 ); }
1866 | sue_declaration_specifier storage_class type_qualifier_list
1867 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1868 ;
[51b73452]1869
[d0ffed1]1870sue_type_specifier: // struct, union, enum + type specifier
1871 elaborated_type
[fdca7c6]1872 | type_qualifier_list
1873 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1874 elaborated_type
1875 { $$ = $3->addQualifiers( $1 ); }
[4d51835]1876 | sue_type_specifier type_qualifier
[284da8c]1877 {
1878 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
1879 $$ = $1->addQualifiers( $2 );
1880 }
[4d51835]1881 ;
[51b73452]1882
[d0ffed1]1883sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1884 sue_type_specifier_nobody
1885 | declaration_qualifier_list sue_type_specifier_nobody
1886 { $$ = $2->addQualifiers( $1 ); }
1887 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1888 { $$ = $1->addQualifiers( $2 ); }
1889 | sue_declaration_specifier_nobody storage_class type_qualifier_list
1890 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1891 ;
1892
1893sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1894 elaborated_type_nobody
1895 | type_qualifier_list elaborated_type_nobody
1896 { $$ = $2->addQualifiers( $1 ); }
1897 | sue_type_specifier_nobody type_qualifier
1898 { $$ = $1->addQualifiers( $2 ); }
1899 ;
1900
[84d58c5]1901type_declaration_specifier:
1902 type_type_specifier
1903 | declaration_qualifier_list type_type_specifier
[4d51835]1904 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1905 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]1906 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1907 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]1908 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1909 ;
[b87a5ed]1910
[84d58c5]1911type_type_specifier: // typedef types
1912 type_name
1913 | type_qualifier_list type_name
1914 { $$ = $2->addQualifiers( $1 ); }
1915 | type_type_specifier type_qualifier
1916 { $$ = $1->addQualifiers( $2 ); }
1917 ;
1918
1919type_name:
[4d51835]1920 TYPEDEFname
1921 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]1922 | '.' TYPEDEFname
[47498bd]1923 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]1924 | type_name '.' TYPEDEFname
[c5d7701]1925 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]1926 | typegen_name
1927 | '.' typegen_name
[47498bd]1928 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]1929 | type_name '.' typegen_name
[c5d7701]1930 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]1931 ;
1932
1933typegen_name: // CFA
[65d6de4]1934 TYPEGENname
1935 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1936 | TYPEGENname '(' ')'
[67cf18c]1937 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1938 | TYPEGENname '(' type_list ')'
[84d58c5]1939 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]1940 ;
[51b73452]1941
[d0ffed1]1942elaborated_type: // struct, union, enum
[c0aa336]1943 aggregate_type
1944 | enum_type
[4d51835]1945 ;
[51b73452]1946
[d0ffed1]1947elaborated_type_nobody: // struct, union, enum - {...}
1948 aggregate_type_nobody
1949 | enum_type_nobody
1950 ;
1951
[3d56d15b]1952fred:
1953 // empty
1954 { yyy = false; }
1955 ;
1956
[d0ffed1]1957aggregate_type: // struct, union
[fc20514]1958 aggregate_key attribute_list_opt
1959 { forall = false; } // reset
1960 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]1961 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[3d56d15b]1962 | aggregate_key attribute_list_opt no_attr_identifier fred
[fdca7c6]1963 {
[26ef3b2]1964 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]1965 forall = false; // reset
1966 }
[284da8c]1967 '{' field_declaration_list_opt '}' type_parameters_opt
1968 { $$ = DeclarationNode::newAggregate( $1, $3, $9, $7, true )->addQualifiers( $2 ); }
[3d56d15b]1969 | aggregate_key attribute_list_opt type_name fred
[407bde5]1970 {
[7de22b28]1971 // for type_name can be a qualified type name S.T, in which case only the last name in the chain needs a typedef (other names in the chain should already have one)
[26ef3b2]1972 typedefTable.makeTypedef( *$3->type->leafName(), forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]1973 forall = false; // reset
1974 }
[284da8c]1975 '{' field_declaration_list_opt '}' type_parameters_opt
1976 { $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $9, $7, true )->addQualifiers( $2 ); }
[d0ffed1]1977 | aggregate_type_nobody
1978 ;
1979
[284da8c]1980type_parameters_opt:
1981 // empty
1982 { $$ = nullptr; } %prec '}'
1983 | '(' type_list ')'
1984 { $$ = $2; }
1985 ;
1986
[d0ffed1]1987aggregate_type_nobody: // struct, union - {...}
[3d56d15b]1988 aggregate_key attribute_list_opt no_attr_identifier fred
[84d58c5]1989 {
[26ef3b2]1990 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]1991 forall = false; // reset
[84d58c5]1992 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
1993 }
[3d56d15b]1994 | aggregate_key attribute_list_opt type_name fred
[65d6de4]1995 {
[fc20514]1996 forall = false; // reset
[65d6de4]1997 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
1998 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
1999 // delete newFromTypeGen.
2000 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2001 $3->type->symbolic.name = nullptr;
2002 $3->type->symbolic.actuals = nullptr;
2003 delete $3;
2004 }
[4d51835]2005 ;
[51b73452]2006
2007aggregate_key:
[c0aa336]2008 STRUCT
[3d56d15b]2009 { yyy = true; $$ = DeclarationNode::Struct; }
[c0aa336]2010 | UNION
[3d56d15b]2011 { yyy = true; $$ = DeclarationNode::Union; }
[c27fb59]2012 | EXCEPTION
[3d56d15b]2013 { yyy = true; $$ = DeclarationNode::Exception; }
[d3bc0ad]2014 | COROUTINE
[3d56d15b]2015 { yyy = true; $$ = DeclarationNode::Coroutine; }
[d3bc0ad]2016 | MONITOR
[3d56d15b]2017 { yyy = true; $$ = DeclarationNode::Monitor; }
[d3bc0ad]2018 | THREAD
[3d56d15b]2019 { yyy = true; $$ = DeclarationNode::Thread; }
[4d51835]2020 ;
[51b73452]2021
[7fdb94e1]2022field_declaration_list_opt:
[5d125e4]2023 // empty
[58dd019]2024 { $$ = nullptr; }
[7fdb94e1]2025 | field_declaration_list_opt field_declaration
[a7741435]2026 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2027 ;
[51b73452]2028
2029field_declaration:
[679e644]2030 type_specifier field_declaring_list_opt ';'
[f7e4db27]2031 { $$ = fieldDecl( $1, $2 ); }
[679e644]2032 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2033 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2034 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2035 {
[dea36ee]2036 if ( ! $3 ) { // field declarator ?
2037 $3 = DeclarationNode::newName( nullptr );
2038 } // if
[679a260]2039 $3->inLine = true;
[679e644]2040 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2041 distInl( $3 );
[8f91c9ae]2042 }
[46fa473]2043 | typedef_declaration ';' // CFA
2044 | cfa_field_declaring_list ';' // CFA, new style field declaration
2045 | EXTENSION cfa_field_declaring_list ';' // GCC
2046 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2047 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2048 { $$ = $2; } // mark all fields in list
[46fa473]2049 | cfa_typedef_declaration ';' // CFA
[b47b827]2050 | static_assert // C11
[4d51835]2051 ;
[b87a5ed]2052
[679e644]2053field_declaring_list_opt:
2054 // empty
2055 { $$ = nullptr; }
2056 | field_declarator
2057 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2058 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2059 ;
[51b73452]2060
[679e644]2061field_declarator:
[e07caa2]2062 bit_subrange_size // C special case, no field name
[4d51835]2063 { $$ = DeclarationNode::newBitfield( $1 ); }
2064 | variable_declarator bit_subrange_size_opt
[679e644]2065 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2066 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2067 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2068 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2069 { $$ = $1->addBitfield( $2 ); }
[679e644]2070 ;
2071
[e07caa2]2072field_abstract_list_opt:
2073 // empty
[dea36ee]2074 { $$ = nullptr; }
[e07caa2]2075 | field_abstract
2076 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2077 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2078 ;
2079
[e07caa2]2080field_abstract:
[f7e4db27]2081 // no bit fields
[e07caa2]2082 variable_abstract_declarator
[679e644]2083 ;
2084
2085cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2086 // bit-fields are handled by C declarations
[679e644]2087 cfa_abstract_declarator_tuple no_attr_identifier_or_type_name
2088 { $$ = $1->addName( $2 ); }
2089 | cfa_field_declaring_list ',' no_attr_identifier_or_type_name
2090 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2091 ;
2092
2093cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2094 // bit-fields are handled by C declarations
[679e644]2095 cfa_abstract_declarator_tuple
2096 | cfa_field_abstract_list ','
2097 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2098 ;
[51b73452]2099
2100bit_subrange_size_opt:
[4d51835]2101 // empty
[58dd019]2102 { $$ = nullptr; }
[4d51835]2103 | bit_subrange_size
2104 ;
[51b73452]2105
2106bit_subrange_size:
[4d51835]2107 ':' constant_expression
2108 { $$ = $2; }
2109 ;
[51b73452]2110
[d0ffed1]2111enum_type: // enum
[c0aa336]2112 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2113 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[407bde5]2114 | ENUM attribute_list_opt no_attr_identifier
[d0ffed1]2115 { typedefTable.makeTypedef( *$3 ); }
2116 '{' enumerator_list comma_opt '}'
2117 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[407bde5]2118 | ENUM attribute_list_opt type_name
2119 '{' enumerator_list comma_opt '}'
2120 { $$ = DeclarationNode::newEnum( $3->type->symbolic.name, $5, true )->addQualifiers( $2 ); }
[d0ffed1]2121 | enum_type_nobody
2122 ;
2123
2124enum_type_nobody: // enum - {...}
[407bde5]2125 ENUM attribute_list_opt no_attr_identifier
[45161b4d]2126 {
[c0aa336]2127 typedefTable.makeTypedef( *$3 );
[ca1a547]2128 $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 );
[45161b4d]2129 }
[407bde5]2130 | ENUM attribute_list_opt type_name
2131 {
2132 typedefTable.makeTypedef( *$3->type->symbolic.name );
2133 $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 );
2134 }
[4d51835]2135 ;
[51b73452]2136
2137enumerator_list:
[2871210]2138 no_attr_identifier_or_type_name enumerator_value_opt
[4d51835]2139 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[2871210]2140 | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt
[4d51835]2141 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
2142 ;
[51b73452]2143
2144enumerator_value_opt:
[4d51835]2145 // empty
[58dd019]2146 { $$ = nullptr; }
[4d51835]2147 | '=' constant_expression
2148 { $$ = $2; }
2149 ;
[51b73452]2150
[40de461]2151cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2152 // empty
[2a8427c6]2153 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2154 | ELLIPSIS
[58dd019]2155 { $$ = nullptr; }
[2a8427c6]2156 | cfa_abstract_parameter_list
[c0aa336]2157 | cfa_parameter_list
[c0a33d2]2158 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2159 { $$ = $1->appendList( $5 ); }
2160 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2161 { $$ = $1->addVarArgs(); }
[c0a33d2]2162 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2163 { $$ = $1->addVarArgs(); }
2164 ;
[b87a5ed]2165
[c0aa336]2166cfa_parameter_list: // CFA
2167 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2168 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2169 cfa_parameter_declaration
[c0a33d2]2170 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2171 { $$ = $1->appendList( $5 ); }
2172 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2173 { $$ = $1->appendList( $5 ); }
2174 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2175 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2176 ;
[b87a5ed]2177
[c0aa336]2178cfa_abstract_parameter_list: // CFA, new & old style abstract
2179 cfa_abstract_parameter_declaration
[c0a33d2]2180 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2181 { $$ = $1->appendList( $5 ); }
[4d51835]2182 ;
[51b73452]2183
2184parameter_type_list_opt:
[4d51835]2185 // empty
[58dd019]2186 { $$ = nullptr; }
[2a8427c6]2187 | ELLIPSIS
2188 { $$ = nullptr; }
2189 | parameter_list
[4d51835]2190 | parameter_list pop ',' push ELLIPSIS
2191 { $$ = $1->addVarArgs(); }
2192 ;
[b87a5ed]2193
2194parameter_list: // abstract + real
[4d51835]2195 abstract_parameter_declaration
2196 | parameter_declaration
2197 | parameter_list pop ',' push abstract_parameter_declaration
2198 { $$ = $1->appendList( $5 ); }
2199 | parameter_list pop ',' push parameter_declaration
2200 { $$ = $1->appendList( $5 ); }
2201 ;
[51b73452]2202
[de62360d]2203// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2204// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2205
[c0aa336]2206cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2207 parameter_declaration
[994d080]2208 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initialize_opt
[4d51835]2209 { $$ = $1->addName( $2 ); }
[994d080]2210 | cfa_abstract_tuple identifier_or_type_name default_initialize_opt
[c0aa336]2211 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2212 { $$ = $1->addName( $2 ); }
[994d080]2213 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initialize_opt
[4d51835]2214 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2215 | cfa_function_specifier
[4d51835]2216 ;
[b87a5ed]2217
[c0aa336]2218cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2219 abstract_parameter_declaration
[c0aa336]2220 | cfa_identifier_parameter_declarator_no_tuple
2221 | cfa_abstract_tuple
2222 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2223 | type_qualifier_list cfa_abstract_tuple
[4d51835]2224 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2225 | cfa_abstract_function
[4d51835]2226 ;
[51b73452]2227
2228parameter_declaration:
[d0ffed1]2229 // No SUE declaration in parameter list.
[994d080]2230 declaration_specifier_nobody identifier_parameter_declarator default_initialize_opt
[7fdb94e1]2231 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[994d080]2232 | declaration_specifier_nobody type_parameter_redeclarator default_initialize_opt
[7fdb94e1]2233 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2234 ;
[51b73452]2235
2236abstract_parameter_declaration:
[994d080]2237 declaration_specifier_nobody default_initialize_opt
[e7cc8cb]2238 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[994d080]2239 | declaration_specifier_nobody abstract_parameter_declarator default_initialize_opt
[e7cc8cb]2240 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2241 ;
[51b73452]2242
[c11e31c]2243// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2244// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2245// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2246
[b87a5ed]2247identifier_list: // K&R-style parameter list => no types
[4d51835]2248 no_attr_identifier
2249 { $$ = DeclarationNode::newName( $1 ); }
2250 | identifier_list ',' no_attr_identifier
2251 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2252 ;
[51b73452]2253
[2871210]2254identifier_or_type_name:
[4d51835]2255 identifier
2256 | TYPEDEFname
2257 | TYPEGENname
2258 ;
[51b73452]2259
[2871210]2260no_attr_identifier_or_type_name:
[4d51835]2261 no_attr_identifier
2262 | TYPEDEFname
[721f17a]2263 | TYPEGENname
[4d51835]2264 ;
[b87a5ed]2265
[84d58c5]2266type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2267 cfa_abstract_declarator_tuple // CFA
[4d51835]2268 | type_specifier
[c0aa336]2269 | type_specifier abstract_declarator
[4d51835]2270 { $$ = $2->addType( $1 ); }
2271 ;
[b87a5ed]2272
[84d58c5]2273type: // typeof, assertion
2274 type_no_function
[c0aa336]2275 | cfa_abstract_function // CFA
[4d51835]2276 ;
[51b73452]2277
2278initializer_opt:
[4d51835]2279 // empty
[58dd019]2280 { $$ = nullptr; }
[2871210]2281 | '=' initializer
2282 { $$ = $2; }
[641c3d0]2283 | '=' VOID
[3ed994e]2284 { $$ = new InitializerNode( true ); }
[097e2b0]2285 | ATassign initializer
[974906e2]2286 { $$ = $2->set_maybeConstructed( false ); }
[4d51835]2287 ;
[51b73452]2288
2289initializer:
[de62360d]2290 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2291 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2292 ;
[51b73452]2293
[7fdb94e1]2294initializer_list_opt:
[097e2b0]2295 // empty
[58dd019]2296 { $$ = nullptr; }
[097e2b0]2297 | initializer
[4d51835]2298 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2299 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2300 | initializer_list_opt ',' designation initializer
[1d4580a]2301 { $$ = (InitializerNode *)( $1->set_last( $4->set_designators( $3 ) ) ); }
[4d51835]2302 ;
[b87a5ed]2303
[de62360d]2304// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2305// '=' to separator the designator from the initializer value, as in:
[c11e31c]2306//
[b87a5ed]2307// int x[10] = { [1] = 3 };
[c11e31c]2308//
[de62360d]2309// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2310// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2311// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2312// shift/reduce conflicts
[51b73452]2313
2314designation:
[4d51835]2315 designator_list ':' // C99, CFA uses ":" instead of "="
[84d58c5]2316 | no_attr_identifier ':' // GCC, field name
[d1625f8]2317 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2318 ;
[51b73452]2319
[b87a5ed]2320designator_list: // C99
[4d51835]2321 designator
[2871210]2322 | designator_list designator
[1d4580a]2323 { $$ = (ExpressionNode *)( $1->set_last( $2 ) ); }
[d1625f8]2324 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2325 ;
[51b73452]2326
2327designator:
[84d58c5]2328 '.' no_attr_identifier // C99, field name
[d1625f8]2329 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2330 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2331 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2332 { $$ = $3; }
[c0a33d2]2333 | '[' push subrange pop ']' // CFA, multiple array elements
2334 { $$ = $3; }
2335 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
2336 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $3 ), maybeMoveBuild< Expression >( $5 ) ) ); }
[679e644]2337 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2338 { $$ = $4; }
[4d51835]2339 ;
[51b73452]2340
[de62360d]2341// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2342// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2343//
2344// Overloading: function, data, and operator identifiers may be overloaded.
2345//
[de62360d]2346// Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
2347// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2348// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2349//
[de62360d]2350// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2351// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2352//
2353// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2354// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2355// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2356// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2357// on type arguments of polymorphic functions.
[c11e31c]2358
[b87a5ed]2359type_parameter_list: // CFA
[67cf18c]2360 type_parameter
2361 | type_parameter_list ',' type_parameter
[4d51835]2362 { $$ = $1->appendList( $3 ); }
2363 ;
[b87a5ed]2364
[84d58c5]2365type_initializer_opt: // CFA
2366 // empty
2367 { $$ = nullptr; }
2368 | '=' type
2369 { $$ = $2; }
2370 ;
2371
[b87a5ed]2372type_parameter: // CFA
[2871210]2373 type_class no_attr_identifier_or_type_name
[ecae5860]2374 { typedefTable.addToScope( *$2, TYPEDEFname, "9" ); }
[67cf18c]2375 type_initializer_opt assertion_list_opt
2376 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[4d51835]2377 | type_specifier identifier_parameter_declarator
[9997fee]2378 | assertion_list
2379 { $$ = DeclarationNode::newTypeParam( DeclarationNode::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2380 ;
[b87a5ed]2381
2382type_class: // CFA
[4040425]2383 OTYPE
[5b639ee]2384 { $$ = DeclarationNode::Otype; }
[4d51835]2385 | DTYPE
2386 { $$ = DeclarationNode::Dtype; }
[8f60f0b]2387 | FTYPE
2388 { $$ = DeclarationNode::Ftype; }
2389 | TTYPE
2390 { $$ = DeclarationNode::Ttype; }
[4d51835]2391 ;
[b87a5ed]2392
2393assertion_list_opt: // CFA
[4d51835]2394 // empty
[58dd019]2395 { $$ = nullptr; }
[9997fee]2396 | assertion_list
2397 ;
2398
2399assertion_list: // CFA
2400 assertion
2401 | assertion_list assertion
[a7741435]2402 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2403 ;
[b87a5ed]2404
2405assertion: // CFA
[84d58c5]2406 '|' no_attr_identifier_or_type_name '(' type_list ')'
[7fdb94e1]2407 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2408 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2409 { $$ = $4; }
[35718a9]2410 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2411 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2412 ;
[b87a5ed]2413
[84d58c5]2414type_list: // CFA
2415 type
[513e165]2416 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2417 | assignment_expression
[3007c0b]2418 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $1->build()) ); $$ = nullptr; }
[84d58c5]2419 | type_list ',' type
[513e165]2420 { $$ = (ExpressionNode *)( $1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) ) ); }
[84d58c5]2421 | type_list ',' assignment_expression
[3007c0b]2422 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $3->build()) ); $$ = nullptr; }
2423 // { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2424 ;
[b87a5ed]2425
2426type_declaring_list: // CFA
[4040425]2427 OTYPE type_declarator
[4d51835]2428 { $$ = $2; }
[4040425]2429 | storage_class_list OTYPE type_declarator
[4d51835]2430 { $$ = $3->addQualifiers( $1 ); }
2431 | type_declaring_list ',' type_declarator
[a7c90d4]2432 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2433 ;
[b87a5ed]2434
2435type_declarator: // CFA
[4d51835]2436 type_declarator_name assertion_list_opt
2437 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2438 | type_declarator_name assertion_list_opt '=' type
[4d51835]2439 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2440 ;
[b87a5ed]2441
2442type_declarator_name: // CFA
[2871210]2443 no_attr_identifier_or_type_name
[4d51835]2444 {
[ecae5860]2445 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2446 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2447 }
[35718a9]2448 | no_attr_identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2449 {
[ecae5860]2450 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2451 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2452 }
2453 ;
[b87a5ed]2454
[4040425]2455trait_specifier: // CFA
[35718a9]2456 TRAIT no_attr_identifier_or_type_name '(' type_parameter_list ')' '{' '}'
2457 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
2458 | TRAIT no_attr_identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
2459 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2460 ;
[b87a5ed]2461
[84d58c5]2462trait_declaration_list: // CFA
[4040425]2463 trait_declaration
[13e8427]2464 | trait_declaration_list pop push trait_declaration
2465 { $$ = $1->appendList( $4 ); }
[4d51835]2466 ;
[b87a5ed]2467
[84d58c5]2468trait_declaration: // CFA
[13e8427]2469 cfa_trait_declaring_list ';'
2470 | trait_declaring_list ';'
[4d51835]2471 ;
[b87a5ed]2472
[c0aa336]2473cfa_trait_declaring_list: // CFA
2474 cfa_variable_specifier
2475 | cfa_function_specifier
2476 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2477 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2478 ;
[b87a5ed]2479
[4040425]2480trait_declaring_list: // CFA
[4d51835]2481 type_specifier declarator
[7fdb94e1]2482 { $$ = $2->addType( $1 ); }
[4040425]2483 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2484 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2485 ;
[51b73452]2486
[c11e31c]2487//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2488
2489translation_unit:
[3d56d15b]2490 // empty, input file
[4d51835]2491 | external_definition_list
[a7741435]2492 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2493 ;
[51b73452]2494
2495external_definition_list:
[35718a9]2496 push external_definition pop
2497 { $$ = $2; }
[fc20514]2498 | external_definition_list push external_definition pop
2499 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2500 ;
[51b73452]2501
2502external_definition_list_opt:
[4d51835]2503 // empty
[58dd019]2504 { $$ = nullptr; }
[3d56d15b]2505 | external_definition_list
2506 ;
2507
2508up:
[fc20514]2509 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2510 ;
2511
2512down:
2513 { typedefTable.down(); }
[4d51835]2514 ;
[51b73452]2515
2516external_definition:
[4d51835]2517 declaration
2518 | external_function_definition
[ecae5860]2519 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2520 {
2521 distExt( $2 ); // mark all fields in list
2522 $$ = $2;
2523 }
[e994912]2524 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
2525 {
[6d539f83]2526 $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) );
[e994912]2527 }
[c0aa336]2528 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2529 {
[3b8e52c]2530 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d55d7a6]2531 linkage = LinkageSpec::linkageUpdate( yylloc, linkage, $2 );
[4d51835]2532 }
[3d56d15b]2533 '{' up external_definition_list_opt down '}'
[4d51835]2534 {
2535 linkage = linkageStack.top();
2536 linkageStack.pop();
[3d56d15b]2537 $$ = $6;
[8e9cbb2]2538 }
[9997fee]2539 | type_qualifier_list
2540 {
[3d56d15b]2541 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2542 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2543 }
2544 '{' up external_definition_list_opt down '}' // CFA, namespace
2545 {
[4c3ee8d]2546 distQual( $5, $1 );
[fc20514]2547 forall = false;
[3d56d15b]2548 $$ = $5;
[9997fee]2549 }
2550 | declaration_qualifier_list
2551 {
[4c3ee8d]2552 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2553 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2554 }
2555 '{' up external_definition_list_opt down '}' // CFA, namespace
2556 {
[4c3ee8d]2557 distQual( $5, $1 );
[fc20514]2558 forall = false;
[3d56d15b]2559 $$ = $5;
[9997fee]2560 }
2561 | declaration_qualifier_list type_qualifier_list
2562 {
[3d56d15b]2563 if ( ($1->type && $1->type->qualifiers.val) || $2->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2564 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2565 }
[3d56d15b]2566 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2567 {
[284da8c]2568 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2569 forall = false;
[3d56d15b]2570 $$ = $6;
[9997fee]2571 }
[4d51835]2572 ;
2573
2574external_function_definition:
2575 function_definition
[de62360d]2576 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2577 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2578 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2579 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2580 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2581 | function_declarator compound_statement
[c0a33d2]2582 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2583 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2584 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2585 ;
[51b73452]2586
[8b47e50]2587with_clause_opt:
2588 // empty
[9997fee]2589 { $$ = nullptr; forall = false; }
[578e6037]2590 | WITH '(' tuple_expression_list ')'
[9997fee]2591 { $$ = $3; forall = false; }
[8b47e50]2592 ;
2593
[51b73452]2594function_definition:
[8b47e50]2595 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2596 {
[481115f]2597 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2598 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2599 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2600 $$ = $1;
[4d51835]2601 }
[8b47e50]2602 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2603 {
[c38ae92]2604 rebindForall( $1, $2 );
[7fdb94e1]2605 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2606 }
2607 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2608 {
2609 rebindForall( $1, $2 );
[5fcba14]2610 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2611 }
[a16a7ec]2612 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2613 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2614 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2615 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2616 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2617 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2618 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2619 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2620 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2621
2622 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2623 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2624 {
[c38ae92]2625 rebindForall( $1, $2 );
[5fcba14]2626 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2627 }
[a16a7ec]2628 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2629 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2630 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2631 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2632 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2633 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2634 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2635 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2636 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2637 ;
[51b73452]2638
2639declarator:
[4d51835]2640 variable_declarator
[c6b1105]2641 | variable_type_redeclarator
[4d51835]2642 | function_declarator
2643 ;
[51b73452]2644
2645subrange:
[4d51835]2646 constant_expression '~' constant_expression // CFA, integer subrange
[db70fe4]2647 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[4d51835]2648 ;
[b87a5ed]2649
2650asm_name_opt: // GCC
[4d51835]2651 // empty
[58dd019]2652 { $$ = nullptr; }
2653 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2654 {
2655 DeclarationNode * name = new DeclarationNode();
2656 name->asmName = $3;
2657 $$ = name->addQualifiers( $5 );
2658 }
[4d51835]2659 ;
[b87a5ed]2660
2661attribute_list_opt: // GCC
[4d51835]2662 // empty
[58dd019]2663 { $$ = nullptr; }
[4d51835]2664 | attribute_list
2665 ;
[b87a5ed]2666
2667attribute_list: // GCC
[4d51835]2668 attribute
2669 | attribute_list attribute
[1db21619]2670 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2671 ;
[b87a5ed]2672
2673attribute: // GCC
[44a81853]2674 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2675 { $$ = $4; }
[4d51835]2676 ;
[b87a5ed]2677
[44a81853]2678attribute_name_list: // GCC
2679 attribute_name
2680 | attribute_name_list ',' attribute_name
[c0aa336]2681 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2682 ;
[b87a5ed]2683
[44a81853]2684attribute_name: // GCC
[4d51835]2685 // empty
[44a81853]2686 { $$ = nullptr; }
2687 | attr_name
2688 { $$ = DeclarationNode::newAttribute( $1 ); }
2689 | attr_name '(' argument_expression_list ')'
2690 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2691 ;
[b87a5ed]2692
[44a81853]2693attr_name: // GCC
2694 IDENTIFIER
[5b2edbc]2695 | quasi_keyword
[44a81853]2696 | TYPEDEFname
2697 | TYPEGENname
[114014c]2698 | FALLTHROUGH
2699 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2700 | CONST
[9ff56e7]2701 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2702 ;
[51b73452]2703
[c11e31c]2704// ============================================================================
[de62360d]2705// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2706// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2707// in:
[c11e31c]2708//
[b87a5ed]2709// int (*f())[10] { ... };
2710// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2711//
[de62360d]2712// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2713// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2714// ============================================================================
2715
2716// ----------------------------------------------------------------------------
[de62360d]2717// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2718// to define a variable or function prototype, e.g.:
[c11e31c]2719//
[b87a5ed]2720// valid declaration invalid definition
2721// ----------------- ------------------
[4d51835]2722// int f; int f {}
2723// int *f; int *f {}
[b87a5ed]2724// int f[10]; int f[10] {}
[4d51835]2725// int (*f)(int); int (*f)(int) {}
[c11e31c]2726//
[de62360d]2727// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2728// variable_declarator and function_declarator.
[c11e31c]2729// ----------------------------------------------------------------------------
2730
[de62360d]2731// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2732// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2733
2734variable_declarator:
[4d51835]2735 paren_identifier attribute_list_opt
[1db21619]2736 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2737 | variable_ptr
2738 | variable_array attribute_list_opt
[1db21619]2739 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2740 | variable_function attribute_list_opt
[1db21619]2741 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2742 ;
[51b73452]2743
2744paren_identifier:
[4d51835]2745 identifier
[7fdb94e1]2746 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2747 | '(' paren_identifier ')' // redundant parenthesis
2748 { $$ = $2; }
2749 ;
[51b73452]2750
2751variable_ptr:
[dd51906]2752 ptrref_operator variable_declarator
[ce8c12f]2753 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2754 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2755 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2756 | '(' variable_ptr ')' attribute_list_opt
2757 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2758 ;
[51b73452]2759
2760variable_array:
[4d51835]2761 paren_identifier array_dimension
2762 { $$ = $1->addArray( $2 ); }
2763 | '(' variable_ptr ')' array_dimension
2764 { $$ = $2->addArray( $4 ); }
2765 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
2766 { $$ = $2->addArray( $4 ); }
2767 | '(' variable_array ')' // redundant parenthesis
2768 { $$ = $2; }
2769 ;
[51b73452]2770
2771variable_function:
[4d51835]2772 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2773 { $$ = $2->addParamList( $6 ); }
2774 | '(' variable_function ')' // redundant parenthesis
2775 { $$ = $2; }
2776 ;
[51b73452]2777
[c6b1105]2778// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2779// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2780// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2781
2782function_declarator:
[4d51835]2783 function_no_ptr attribute_list_opt
[1db21619]2784 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2785 | function_ptr
2786 | function_array attribute_list_opt
[1db21619]2787 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2788 ;
[51b73452]2789
2790function_no_ptr:
[4d51835]2791 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2792 { $$ = $1->addParamList( $4 ); }
2793 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2794 { $$ = $2->addParamList( $6 ); }
2795 | '(' function_no_ptr ')' // redundant parenthesis
2796 { $$ = $2; }
2797 ;
[51b73452]2798
2799function_ptr:
[dd51906]2800 ptrref_operator function_declarator
[ce8c12f]2801 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2802 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]2803 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[4d51835]2804 | '(' function_ptr ')'
2805 { $$ = $2; }
2806 ;
[51b73452]2807
2808function_array:
[4d51835]2809 '(' function_ptr ')' array_dimension
2810 { $$ = $2->addArray( $4 ); }
2811 | '(' function_array ')' multi_array_dimension // redundant parenthesis
2812 { $$ = $2->addArray( $4 ); }
2813 | '(' function_array ')' // redundant parenthesis
2814 { $$ = $2; }
2815 ;
[51b73452]2816
[c0aa336]2817// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2818//
2819// f( a, b, c ) int a, *b, c[]; {}
2820//
2821// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2822// returning arrays and functions versus pointers to arrays and functions.
[51b73452]2823
[c0aa336]2824KR_function_declarator:
2825 KR_function_no_ptr
2826 | KR_function_ptr
2827 | KR_function_array
[4d51835]2828 ;
[51b73452]2829
[c0aa336]2830KR_function_no_ptr:
[4d51835]2831 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2832 { $$ = $1->addIdList( $3 ); }
[c0a33d2]2833 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2834 { $$ = $2->addParamList( $6 ); }
[c0aa336]2835 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]2836 { $$ = $2; }
2837 ;
[51b73452]2838
[c0aa336]2839KR_function_ptr:
2840 ptrref_operator KR_function_declarator
[ce8c12f]2841 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]2842 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]2843 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2844 | '(' KR_function_ptr ')'
[4d51835]2845 { $$ = $2; }
2846 ;
[51b73452]2847
[c0aa336]2848KR_function_array:
2849 '(' KR_function_ptr ')' array_dimension
[4d51835]2850 { $$ = $2->addArray( $4 ); }
[c0aa336]2851 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2852 { $$ = $2->addArray( $4 ); }
[c0aa336]2853 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]2854 { $$ = $2; }
2855 ;
[51b73452]2856
[2871210]2857// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]2858//
[b87a5ed]2859// typedef int foo;
2860// {
2861// int foo; // redefine typedef name in new scope
2862// }
[c11e31c]2863//
[de62360d]2864// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2865// and functions versus pointers to arrays and functions.
[51b73452]2866
[c6b1105]2867variable_type_redeclarator:
[2871210]2868 paren_type attribute_list_opt
[1db21619]2869 { $$ = $1->addQualifiers( $2 ); }
[2871210]2870 | type_ptr
2871 | type_array attribute_list_opt
[1db21619]2872 { $$ = $1->addQualifiers( $2 ); }
[2871210]2873 | type_function attribute_list_opt
[1db21619]2874 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2875 ;
[51b73452]2876
[2871210]2877paren_type:
2878 typedef
[2f0a0678]2879 // hide type name in enclosing scope by variable name
[c4f68dc]2880 {
2881 // if ( ! typedefTable.existsCurr( *$1->name ) ) {
2882 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
2883 // } else {
2884 // SemanticError( yylloc, string("'") + *$1->name + "' redeclared as different kind of symbol." ); $$ = nullptr;
2885 // } // if
2886 }
[2871210]2887 | '(' paren_type ')'
[4d51835]2888 { $$ = $2; }
2889 ;
[51b73452]2890
[2871210]2891type_ptr:
[c6b1105]2892 ptrref_operator variable_type_redeclarator
[ce8c12f]2893 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]2894 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]2895 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2896 | '(' type_ptr ')' attribute_list_opt
[c4f68dc]2897 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2898 ;
[51b73452]2899
[2871210]2900type_array:
2901 paren_type array_dimension
[4d51835]2902 { $$ = $1->addArray( $2 ); }
[2871210]2903 | '(' type_ptr ')' array_dimension
[4d51835]2904 { $$ = $2->addArray( $4 ); }
[2871210]2905 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2906 { $$ = $2->addArray( $4 ); }
[2871210]2907 | '(' type_array ')' // redundant parenthesis
[4d51835]2908 { $$ = $2; }
2909 ;
[51b73452]2910
[2871210]2911type_function:
2912 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]2913 { $$ = $1->addParamList( $4 ); }
[2871210]2914 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]2915 { $$ = $2->addParamList( $6 ); }
[2871210]2916 | '(' type_function ')' // redundant parenthesis
[4d51835]2917 { $$ = $2; }
2918 ;
[51b73452]2919
[c0aa336]2920// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
2921// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
2922// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
2923// pointers to arrays and functions.
[51b73452]2924
2925identifier_parameter_declarator:
[4d51835]2926 paren_identifier attribute_list_opt
[1db21619]2927 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]2928 | '&' MUTEX paren_identifier attribute_list_opt
2929 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]2930 | identifier_parameter_ptr
2931 | identifier_parameter_array attribute_list_opt
[1db21619]2932 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2933 | identifier_parameter_function attribute_list_opt
[1db21619]2934 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2935 ;
[51b73452]2936
2937identifier_parameter_ptr:
[dd51906]2938 ptrref_operator identifier_parameter_declarator
[ce8c12f]2939 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2940 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]2941 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2942 | '(' identifier_parameter_ptr ')' attribute_list_opt
2943 { $$ = $2->addQualifiers( $4 ); }
[4d51835]2944 ;
[51b73452]2945
2946identifier_parameter_array:
[4d51835]2947 paren_identifier array_parameter_dimension
2948 { $$ = $1->addArray( $2 ); }
2949 | '(' identifier_parameter_ptr ')' array_dimension
2950 { $$ = $2->addArray( $4 ); }
2951 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
2952 { $$ = $2->addArray( $4 ); }
2953 | '(' identifier_parameter_array ')' // redundant parenthesis
2954 { $$ = $2; }
2955 ;
[51b73452]2956
2957identifier_parameter_function:
[c0a33d2]2958 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2959 { $$ = $1->addParamList( $4 ); }
2960 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2961 { $$ = $2->addParamList( $6 ); }
[4d51835]2962 | '(' identifier_parameter_function ')' // redundant parenthesis
2963 { $$ = $2; }
2964 ;
[b87a5ed]2965
[de62360d]2966// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
2967// e.g.:
[c11e31c]2968//
[b87a5ed]2969// typedef int foo;
[114014c]2970// forall( otype T ) struct foo;
[b87a5ed]2971// int f( int foo ); // redefine typedef name in new scope
[c11e31c]2972//
[c0aa336]2973// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]2974
[2871210]2975type_parameter_redeclarator:
[4d51835]2976 typedef attribute_list_opt
[1db21619]2977 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]2978 | '&' MUTEX typedef attribute_list_opt
2979 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]2980 | type_parameter_ptr
2981 | type_parameter_array attribute_list_opt
[1db21619]2982 { $$ = $1->addQualifiers( $2 ); }
[2871210]2983 | type_parameter_function attribute_list_opt
[1db21619]2984 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2985 ;
[51b73452]2986
2987typedef:
[4d51835]2988 TYPEDEFname
[7fdb94e1]2989 { $$ = DeclarationNode::newName( $1 ); }
[2871210]2990 | TYPEGENname
[7fdb94e1]2991 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2992 ;
[51b73452]2993
[2871210]2994type_parameter_ptr:
[dd51906]2995 ptrref_operator type_parameter_redeclarator
[ce8c12f]2996 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2997 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]2998 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2999 | '(' type_parameter_ptr ')' attribute_list_opt
3000 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3001 ;
[51b73452]3002
[2871210]3003type_parameter_array:
[4d51835]3004 typedef array_parameter_dimension
3005 { $$ = $1->addArray( $2 ); }
[2871210]3006 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3007 { $$ = $2->addArray( $4 ); }
3008 ;
[51b73452]3009
[2871210]3010type_parameter_function:
[c0a33d2]3011 typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3012 { $$ = $1->addParamList( $4 ); }
3013 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3014 { $$ = $2->addParamList( $6 ); }
[4d51835]3015 ;
[b87a5ed]3016
[de62360d]3017// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3018// which the type applies, e.g.:
[c11e31c]3019//
[b87a5ed]3020// sizeof( int );
[c0aa336]3021// sizeof( int * );
[b87a5ed]3022// sizeof( int [10] );
[c0aa336]3023// sizeof( int (*)() );
3024// sizeof( int () );
[c11e31c]3025//
[de62360d]3026// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3027// and functions versus pointers to arrays and functions.
[51b73452]3028
3029abstract_declarator:
[4d51835]3030 abstract_ptr
3031 | abstract_array attribute_list_opt
[1db21619]3032 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3033 | abstract_function attribute_list_opt
[1db21619]3034 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3035 ;
[51b73452]3036
3037abstract_ptr:
[dd51906]3038 ptrref_operator
[ce8c12f]3039 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3040 | ptrref_operator type_qualifier_list
[ce8c12f]3041 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3042 | ptrref_operator abstract_declarator
[ce8c12f]3043 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3044 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3045 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3046 | '(' abstract_ptr ')' attribute_list_opt
3047 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3048 ;
[51b73452]3049
3050abstract_array:
[4d51835]3051 array_dimension
3052 | '(' abstract_ptr ')' array_dimension
3053 { $$ = $2->addArray( $4 ); }
3054 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3055 { $$ = $2->addArray( $4 ); }
3056 | '(' abstract_array ')' // redundant parenthesis
3057 { $$ = $2; }
3058 ;
[51b73452]3059
3060abstract_function:
[c0a33d2]3061 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3062 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3063 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3064 { $$ = $2->addParamList( $6 ); }
[4d51835]3065 | '(' abstract_function ')' // redundant parenthesis
3066 { $$ = $2; }
3067 ;
[51b73452]3068
3069array_dimension:
[4d51835]3070 // Only the first dimension can be empty.
[2871210]3071 '[' ']'
[4d51835]3072 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3073 | '[' ']' multi_array_dimension
3074 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[4d51835]3075 | multi_array_dimension
3076 ;
[51b73452]3077
3078multi_array_dimension:
[c0a33d2]3079 '[' push assignment_expression pop ']'
3080 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3081 | '[' push '*' pop ']' // C99
[4d51835]3082 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3083 | multi_array_dimension '[' push assignment_expression pop ']'
3084 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3085 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3086 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3087 ;
[51b73452]3088
[c11e31c]3089// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3090// identifier to which the type applies, e.g.:
3091//
[c0aa336]3092// int f( int ); // not handled here
3093// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3094// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3095// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3096//
[de62360d]3097// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3098// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3099// special meaning of parenthesis around a typedef name:
3100//
3101// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3102// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3103// not as redundant parentheses around the identifier."
3104//
3105// For example:
3106//
3107// typedef float T;
3108// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3109// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3110// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3111// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3112//
3113// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3114// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3115// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3116// functions.
[51b73452]3117
3118abstract_parameter_declarator:
[4d51835]3119 abstract_parameter_ptr
[b6b3c42]3120 | '&' MUTEX attribute_list_opt
3121 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3122 | abstract_parameter_array attribute_list_opt
[1db21619]3123 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3124 | abstract_parameter_function attribute_list_opt
[1db21619]3125 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3126 ;
[51b73452]3127
3128abstract_parameter_ptr:
[dd51906]3129 ptrref_operator
[ce8c12f]3130 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3131 | ptrref_operator type_qualifier_list
[ce8c12f]3132 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3133 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3134 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3135 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3136 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3137 | '(' abstract_parameter_ptr ')' attribute_list_opt
3138 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3139 ;
[51b73452]3140
3141abstract_parameter_array:
[4d51835]3142 array_parameter_dimension
3143 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3144 { $$ = $2->addArray( $4 ); }
3145 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3146 { $$ = $2->addArray( $4 ); }
3147 | '(' abstract_parameter_array ')' // redundant parenthesis
3148 { $$ = $2; }
3149 ;
[51b73452]3150
3151abstract_parameter_function:
[c0a33d2]3152 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3153 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3154 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3155 { $$ = $2->addParamList( $6 ); }
[4d51835]3156 | '(' abstract_parameter_function ')' // redundant parenthesis
3157 { $$ = $2; }
3158 ;
[51b73452]3159
3160array_parameter_dimension:
[4d51835]3161 // Only the first dimension can be empty or have qualifiers.
3162 array_parameter_1st_dimension
3163 | array_parameter_1st_dimension multi_array_dimension
3164 { $$ = $1->addArray( $2 ); }
3165 | multi_array_dimension
3166 ;
[51b73452]3167
[c11e31c]3168// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3169//
[de62360d]3170// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3171// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3172
3173array_parameter_1st_dimension:
[2871210]3174 '[' ']'
[4d51835]3175 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3176 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3177 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3178 { $$ = DeclarationNode::newVarArray( $3 ); }
3179 | '[' push type_qualifier_list pop ']'
3180 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3181 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3182 | '[' push type_qualifier_list assignment_expression pop ']'
3183 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3184 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3185 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3186 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3187 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3188 ;
[b87a5ed]3189
[c0aa336]3190// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3191//
[c0aa336]3192// struct S {
3193// int;
3194// int *;
3195// int [10];
3196// int (*)();
3197// };
[51b73452]3198
3199variable_abstract_declarator:
[4d51835]3200 variable_abstract_ptr
3201 | variable_abstract_array attribute_list_opt
[1db21619]3202 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3203 | variable_abstract_function attribute_list_opt
[1db21619]3204 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3205 ;
[51b73452]3206
3207variable_abstract_ptr:
[dd51906]3208 ptrref_operator
[ce8c12f]3209 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3210 | ptrref_operator type_qualifier_list
[ce8c12f]3211 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3212 | ptrref_operator variable_abstract_declarator
[ce8c12f]3213 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3214 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3215 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3216 | '(' variable_abstract_ptr ')' attribute_list_opt
3217 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3218 ;
[51b73452]3219
3220variable_abstract_array:
[4d51835]3221 array_dimension
3222 | '(' variable_abstract_ptr ')' array_dimension
3223 { $$ = $2->addArray( $4 ); }
3224 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3225 { $$ = $2->addArray( $4 ); }
3226 | '(' variable_abstract_array ')' // redundant parenthesis
3227 { $$ = $2; }
3228 ;
[51b73452]3229
3230variable_abstract_function:
[c0a33d2]3231 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3232 { $$ = $2->addParamList( $6 ); }
[4d51835]3233 | '(' variable_abstract_function ')' // redundant parenthesis
3234 { $$ = $2; }
3235 ;
[b87a5ed]3236
[de62360d]3237// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3238// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3239
[c0aa336]3240cfa_identifier_parameter_declarator_tuple: // CFA
3241 cfa_identifier_parameter_declarator_no_tuple
3242 | cfa_abstract_tuple
3243 | type_qualifier_list cfa_abstract_tuple
[4d51835]3244 { $$ = $2->addQualifiers( $1 ); }
3245 ;
[b87a5ed]3246
[c0aa336]3247cfa_identifier_parameter_declarator_no_tuple: // CFA
3248 cfa_identifier_parameter_ptr
3249 | cfa_identifier_parameter_array
[4d51835]3250 ;
[b87a5ed]3251
[c0aa336]3252cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3253 // No SUE declaration in parameter list.
3254 ptrref_operator type_specifier_nobody
[ce8c12f]3255 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3256 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3257 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3258 | ptrref_operator cfa_abstract_function
[ce8c12f]3259 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3260 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3261 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3262 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3263 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3264 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3265 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3266 ;
[b87a5ed]3267
[c0aa336]3268cfa_identifier_parameter_array: // CFA
[de62360d]3269 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3270 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3271 '[' ']' type_specifier_nobody
[2871210]3272 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3273 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3274 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3275 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3276 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3277 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3278 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3279 | multi_array_dimension type_specifier_nobody
[4d51835]3280 { $$ = $2->addNewArray( $1 ); }
[9059213]3281
[c0aa336]3282 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3283 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3284 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3285 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3286 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3287 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3288 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3289 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3290 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3291 { $$ = $2->addNewArray( $1 ); }
3292 ;
[51b73452]3293
[c0aa336]3294cfa_array_parameter_1st_dimension:
[c0a33d2]3295 '[' push type_qualifier_list '*' pop ']' // remaining C99
3296 { $$ = DeclarationNode::newVarArray( $3 ); }
3297 | '[' push type_qualifier_list assignment_expression pop ']'
3298 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3299 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3300 // declaration_qualifier_list must be used because of shift/reduce conflict with
3301 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3302 // appear in this context.
[c0a33d2]3303 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3304 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3305 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3306 ;
[b87a5ed]3307
[de62360d]3308// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3309// identifier to which the type applies, e.g.:
[c11e31c]3310//
[b87a5ed]3311// [int] f( int ); // abstract variable parameter; no parameter name specified
3312// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3313//
3314// These rules need LR(3):
3315//
[c0aa336]3316// cfa_abstract_tuple identifier_or_type_name
[40de461]3317// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3318//
3319// since a function return type can be syntactically identical to a tuple type:
3320//
[b87a5ed]3321// [int, int] t;
3322// [int, int] f( int );
[c11e31c]3323//
[2871210]3324// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3325// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3326// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3327// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3328
[c0aa336]3329cfa_abstract_declarator_tuple: // CFA
3330 cfa_abstract_tuple
3331 | type_qualifier_list cfa_abstract_tuple
[4d51835]3332 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3333 | cfa_abstract_declarator_no_tuple
[4d51835]3334 ;
[b87a5ed]3335
[c0aa336]3336cfa_abstract_declarator_no_tuple: // CFA
3337 cfa_abstract_ptr
3338 | cfa_abstract_array
[4d51835]3339 ;
[b87a5ed]3340
[c0aa336]3341cfa_abstract_ptr: // CFA
[dd51906]3342 ptrref_operator type_specifier
[ce8c12f]3343 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3344 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3345 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3346 | ptrref_operator cfa_abstract_function
[ce8c12f]3347 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3348 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3349 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3350 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3351 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3352 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3353 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3354 ;
[b87a5ed]3355
[c0aa336]3356cfa_abstract_array: // CFA
[de62360d]3357 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3358 // empty (void) function return type.
[2871210]3359 '[' ']' type_specifier
[2298f728]3360 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3361 | '[' ']' multi_array_dimension type_specifier
[2298f728]3362 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3363 | multi_array_dimension type_specifier
3364 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3365 | '[' ']' cfa_abstract_ptr
[2298f728]3366 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3367 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3368 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3369 | multi_array_dimension cfa_abstract_ptr
[4d51835]3370 { $$ = $2->addNewArray( $1 ); }
3371 ;
[b87a5ed]3372
[c0aa336]3373cfa_abstract_tuple: // CFA
[c0a33d2]3374 '[' push cfa_abstract_parameter_list pop ']'
3375 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3376 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3377 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3378 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3379 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3380 ;
[b87a5ed]3381
[c0aa336]3382cfa_abstract_function: // CFA
[40de461]3383// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3384// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3385 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3386 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3387 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3388 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3389 ;
[b87a5ed]3390
[de62360d]3391// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3392// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3393//
[de62360d]3394// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3395// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3396//
3397// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3398// prototype-format parameter type declarators) is an obsolescent feature."
3399//
[de62360d]3400// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3401// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3402
[c11e31c]3403//************************* MISCELLANEOUS ********************************
[51b73452]3404
[b87a5ed]3405comma_opt: // redundant comma
[4d51835]3406 // empty
3407 | ','
3408 ;
[51b73452]3409
[994d080]3410default_initialize_opt:
[4d51835]3411 // empty
[58dd019]3412 { $$ = nullptr; }
[4d51835]3413 | '=' assignment_expression
3414 { $$ = $2; }
3415 ;
[51b73452]3416
3417%%
[a1c9ddd]3418
[c11e31c]3419// ----end of grammar----
[51b73452]3420
[c11e31c]3421// Local Variables: //
[b87a5ed]3422// mode: c++ //
[de62360d]3423// tab-width: 4 //
[c11e31c]3424// compile-command: "make install" //
3425// End: //
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