source: src/Parser/parser.yy@ 1f8f5a7

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 1f8f5a7 was 408ab79, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago

parse typed enumeration

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File size: 138.7 KB
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[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
[408ab79]12// Last Modified On : Mon Jan 25 21:41:56 2021
13// Update Count : 4670
[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
[312029a]53#include "SynTree/Declaration.h"
[51b73452]54#include "ParseNode.h"
[984dce6]55#include "TypedefTable.h"
[1db21619]56#include "TypeData.h"
[07de76b]57#include "SynTree/LinkageSpec.h"
[9ed4f94]58#include "Common/SemanticError.h" // error_str
[513e165]59#include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
[51b73452]60
[cbaee0d]61extern DeclarationNode * parseTree;
[8b7ee09]62extern LinkageSpec::Spec linkage;
[0da3e2c]63extern TypedefTable typedefTable;
64
[408ab79]65stack<LinkageSpec::Spec> linkageStack;
[7bf7fb9]66
[15697ff]67bool appendStr( string & to, string & from ) {
68 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]69 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]70 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
71 // easier to let the C compiler handle this case.
72 //
73 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
74 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
75 // i.e., u"a" U"b" L"c" is disallowed.
76
77 if ( from[0] != '"' ) { // encoding ?
78 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]79 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]80 yyerror( "non-matching string encodings for string-literal concatenation" );
81 return false; // parse error, must call YYERROR in action
[ea0c5e3]82 } else if ( from[1] == '8' ) {
83 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]84 } // if
85 } else {
[ea0c5e3]86 if ( from[1] == '8' ) { // move encoding to start
87 to = "u8" + to;
88 from.erase( 0, 1 ); // remove 2nd encoding
89 } else {
90 to = from[0] + to;
91 } // if
[15697ff]92 } // if
93 from.erase( 0, 1 ); // remove 2nd encoding
94 } // if
95 to += " " + from; // concatenated into single string
96 return true;
[7bf7fb9]97} // appendStr
[c0aa336]98
99DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) {
100 // distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__.
101 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier );
[6d01d89]102 for ( cur = dynamic_cast<DeclarationNode *>( cur->get_next() ); cur != nullptr; cur = dynamic_cast<DeclarationNode *>( cur->get_next() ) ) {
[c0aa336]103 cl->cloneBaseType( cur );
104 } // for
105 declList->addType( cl );
106 return declList;
107} // distAttr
108
109void distExt( DeclarationNode * declaration ) {
110 // distribute EXTENSION across all declarations
111 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
112 iter->set_extension( true );
113 } // for
114} // distExt
[fdca7c6]115
[e07caa2]116void distInl( DeclarationNode * declaration ) {
117 // distribute EXTENSION across all declarations
118 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
119 iter->set_inLine( true );
120 } // for
121} // distInl
122
[4c3ee8d]123void distQual( DeclarationNode * declaration, DeclarationNode * qualifiers ) {
[284da8c]124 // distribute qualifiers across all non-variable declarations in a distribution statemement
[4c3ee8d]125 for ( DeclarationNode * iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[284da8c]126 // SKULLDUGGERY: Distributions are parsed inside out, so qualifiers are added to declarations inside out. Since
127 // addQualifiers appends to the back of the list, the forall clauses are in the wrong order (right to left). To
128 // get the qualifiers in the correct order and still use addQualifiers (otherwise, 90% of addQualifiers has to
129 // be copied to add to front), the appropriate forall pointers are interchanged before calling addQualifiers.
130 DeclarationNode * clone = qualifiers->clone();
131 if ( qualifiers->type ) { // forall clause ? (handles SC)
132 if ( iter->type->kind == TypeData::Aggregate ) { // struct/union ?
133 swap( clone->type->forall, iter->type->aggregate.params );
134 iter->addQualifiers( clone );
135 } else if ( iter->type->kind == TypeData::AggregateInst && iter->type->aggInst.aggregate->aggregate.body ) { // struct/union ?
136 // Create temporary node to hold aggregate, call addQualifiers as above, then put nodes back together.
137 DeclarationNode newnode;
138 swap( newnode.type, iter->type->aggInst.aggregate );
139 swap( clone->type->forall, newnode.type->aggregate.params );
140 newnode.addQualifiers( clone );
141 swap( newnode.type, iter->type->aggInst.aggregate );
142 } else if ( iter->type->kind == TypeData::Function ) { // routines ?
143 swap( clone->type->forall, iter->type->forall );
144 iter->addQualifiers( clone );
145 } // if
146 } else { // just SC qualifiers
147 iter->addQualifiers( clone );
148 } // if
[4c3ee8d]149 } // for
[284da8c]150 delete qualifiers;
151} // distQual
[4c3ee8d]152
[c38ae92]153// There is an ambiguity for inline generic-routine return-types and generic routines.
154// forall( otype T ) struct S { int i; } bar( T ) {}
155// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
156// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]157// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
158// forall( otype T ) struct S { int T; };
159// forall( otype W ) bar( W ) {}
[c38ae92]160
161void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]162 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]163 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
164 declSpec->type->aggregate.params = nullptr;
165 } // if
166} // rebindForall
167
[60a8062]168string * build_postfix_name( string * name ) {
169 *name = string("__postfix_func_") + *name;
170 return name;
[dc7db63]171} // build_postfix_name
172
[f7e4db27]173DeclarationNode * fieldDecl( DeclarationNode * typeSpec, DeclarationNode * fieldList ) {
174 if ( ! fieldList ) { // field declarator ?
[553772b]175 if ( ! ( typeSpec->type && (typeSpec->type->kind == TypeData::Aggregate || typeSpec->type->kind == TypeData::Enum) ) ) {
[f7e4db27]176 stringstream ss;
177 typeSpec->type->print( ss );
178 SemanticWarning( yylloc, Warning::SuperfluousDecl, ss.str().c_str() );
179 return nullptr;
180 } // if
181 fieldList = DeclarationNode::newName( nullptr );
182 } // if
183 return distAttr( typeSpec, fieldList ); // mark all fields in list
184} // fieldDecl
185
[cc22003]186ForCtrl * forCtrl( ExpressionNode * type, string * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]187 ConstantExpr * constant = dynamic_cast<ConstantExpr *>(type->expr.get());
[0982a05]188 if ( constant && (constant->get_constant()->get_value() == "0" || constant->get_constant()->get_value() == "1") ) {
[408ab79]189 type = new ExpressionNode( new CastExpr( maybeMoveBuild<Expression>(type), new BasicType( Type::Qualifiers(), BasicType::SignedInt ) ) );
[0982a05]190 } // if
[f271bdd]191 return new ForCtrl(
[5753b33]192 distAttr( DeclarationNode::newTypeof( type, true ), DeclarationNode::newName( index )->addInitializer( new InitializerNode( start ) ) ),
[2d2df9f]193 // NULL comp/inc => leave blank
194 comp ? new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index ) ) ), comp ) ) : 0,
195 inc ? new ExpressionNode( build_binary_val( compop == OperKinds::LThan || compop == OperKinds::LEThan ? // choose += or -= for upto/downto
196 OperKinds::PlusAssn : OperKinds::MinusAssn, new ExpressionNode( build_varref( new string( *index ) ) ), inc ) ) : 0 );
[f271bdd]197} // forCtrl
198
[f1aeede]199ForCtrl * forCtrl( ExpressionNode * type, ExpressionNode * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]200 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(index->expr.get()) ) {
[f1aeede]201 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
[1dda8de]202 } else if ( CommaExpr * commaExpr = dynamic_cast<CommaExpr *>(index->expr.get()) ) {
[6d01d89]203 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(commaExpr->arg1 ) ) {
204 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
205 } else {
[3ca7ef3]206 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[6d01d89]207 } // if
[f1aeede]208 } else {
[3ca7ef3]209 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[f1aeede]210 } // if
[f271bdd]211} // forCtrl
212
[fc20514]213bool forall = false, yyy = false; // aggregate have one or more forall qualifiers ?
[d48e529]214
[201aeb9]215// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
216#define YYLLOC_DEFAULT(Cur, Rhs, N) \
217if ( N ) { \
218 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
219 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
220 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
221 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
222 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
223} else { \
224 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
225 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
226 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
227}
[51b73452]228%}
229
[15697ff]230%define parse.error verbose
231
[201aeb9]232// Types declaration for productions
[0982a05]233%union {
[a67b60e]234 Token tok;
235 ParseNode * pn;
236 ExpressionNode * en;
237 DeclarationNode * decl;
[312029a]238 AggregateDecl::Aggregate aggKey;
[07de76b]239 TypeDecl::Kind tclass;
[a67b60e]240 StatementNode * sn;
[135b431]241 WaitForStmt * wfs;
[e612146c]242 Expression * constant;
[f271bdd]243 IfCtrl * ifctl;
244 ForCtrl * fctl;
[cc22003]245 enum OperKinds compop;
[a67b60e]246 LabelNode * label;
247 InitializerNode * in;
248 OperKinds op;
249 std::string * str;
250 bool flag;
[307a732]251 CatchStmt::Kind catch_kind;
[d807ca28]252 GenericExpr * genexpr;
[a67b60e]253}
254
[c11e31c]255//************************* TERMINAL TOKENS ********************************
[51b73452]256
[c11e31c]257// keywords
[51b73452]258%token TYPEDEF
[a7c90d4]259%token EXTERN STATIC AUTO REGISTER
260%token THREADLOCAL // C11
261%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
262%token NORETURN // C11
[51b73452]263%token CONST VOLATILE
[b87a5ed]264%token RESTRICT // C99
[a7c90d4]265%token ATOMIC // C11
[1528a2c]266%token FORALL MUTEX VIRTUAL COERCE // CFA
[72457b6]267%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]268%token BOOL COMPLEX IMAGINARY // C99
[f1da02c]269%token INT128 UINT128 uuFLOAT80 uuFLOAT128 // GCC
[e15853c]270%token uFLOAT16 uFLOAT32 uFLOAT32X uFLOAT64 uFLOAT64X uFLOAT128 // GCC
[72457b6]271%token ZERO_T ONE_T // CFA
272%token VALIST // GCC
[f673c13c]273%token AUTO_TYPE // GCC
[ee27df2]274%token TYPEOF BASETYPEOF LABEL // GCC
[51b73452]275%token ENUM STRUCT UNION
[c27fb59]276%token EXCEPTION // CFA
[553772b]277%token GENERATOR COROUTINE MONITOR THREAD // CFA
[a7c90d4]278%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[5721a6d]279%token SIZEOF OFFSETOF
[25744d2]280// %token RESUME // CFA
281%token SUSPEND // CFA
[b87a5ed]282%token ATTRIBUTE EXTENSION // GCC
[51b73452]283%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[114014c]284%token CHOOSE DISABLE ENABLE FALLTHRU FALLTHROUGH TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT WITH WHEN WAITFOR // CFA
[b87a5ed]285%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
[a7c90d4]286%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
[51b73452]287
[c11e31c]288// names and constants: lexer differentiates between identifier and typedef names
[b87a5ed]289%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname
[5b2edbc]290%token<tok> TIMEOUT WOR
[1b29996]291%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
[61fc4f6]292%token<tok> DIRECTIVE
[1b29996]293// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
294// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
295// converted into the tuple index (.)(1). e.g., 3.x
[930f69e]296%token<tok> FLOATING_DECIMALconstant FLOATING_FRACTIONconstant FLOATINGconstant
[51b73452]297
[c11e31c]298// multi-character operators
[b87a5ed]299%token ARROW // ->
300%token ICR DECR // ++ --
301%token LS RS // << >>
302%token LE GE EQ NE // <= >= == !=
303%token ANDAND OROR // && ||
304%token ELLIPSIS // ...
305
[e5f2a67]306%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
[b87a5ed]307%token PLUSassign MINUSassign // += -=
308%token LSassign RSassign // <<= >>=
309%token ANDassign ERassign ORassign // &= ^= |=
[51b73452]310
[d69f4bb4]311%token ErangeUpEq ErangeDown ErangeDownEq // ~= -~ -~=
[e7aed49]312%token ATassign // @=
[097e2b0]313
[033ff37]314%type<tok> identifier
315%type<tok> identifier_or_type_name attr_name
[5b2edbc]316%type<tok> quasi_keyword
[ab57786]317%type<constant> string_literal
318%type<str> string_literal_list
[51b73452]319
[c11e31c]320// expressions
[d1625f8]321%type<en> constant
[b87a5ed]322%type<en> tuple tuple_expression_list
[9706554]323%type<op> ptrref_operator unary_operator assignment_operator
[b87a5ed]324%type<en> primary_expression postfix_expression unary_expression
[4a063df]325%type<en> cast_expression_list cast_expression exponential_expression multiplicative_expression additive_expression
[994d080]326%type<en> shift_expression relational_expression equality_expression
327%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
328%type<en> logical_AND_expression logical_OR_expression
329%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]330%type<en> comma_expression comma_expression_opt
[5a51798]331%type<en> argument_expression_list_opt argument_expression default_initializer_opt
[936e9f4]332%type<ifctl> if_control_expression
[6d01d89]333%type<fctl> for_control_expression for_control_expression_list
[cc22003]334%type<compop> inclexcl
[51b73452]335%type<en> subrange
[c0aa336]336%type<decl> asm_name_opt
[67d4e37]337%type<en> asm_operands_opt asm_operands_list asm_operand
[7f5566b]338%type<label> label_list
[d1625f8]339%type<en> asm_clobbers_list_opt
[7f5566b]340%type<flag> asm_volatile_opt
[cbce272]341%type<en> handler_predicate_opt
[67d4e37]342%type<genexpr> generic_association generic_assoc_list
[51b73452]343
[c11e31c]344// statements
[9bd6105]345%type<sn> statement labeled_statement compound_statement
346%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]347%type<sn> selection_statement if_statement
[6a276a0]348%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]349%type<en> case_value
350%type<sn> case_clause case_value_list case_label case_label_list
[8b47e50]351%type<sn> iteration_statement jump_statement
[9bd6105]352%type<sn> expression_statement asm_statement
[c453ac4]353%type<sn> with_statement
354%type<en> with_clause_opt
[51d6d6a]355%type<sn> exception_statement handler_clause finally_clause
356%type<catch_kind> handler_key
[b6b3c42]357%type<sn> mutex_statement
[9bd6105]358%type<en> when_clause when_clause_opt waitfor timeout
[135b431]359%type<sn> waitfor_statement
[51d6d6a]360%type<wfs> waitfor_clause
[51b73452]361
[c11e31c]362// declarations
[c0aa336]363%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
364%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
365%type<decl> abstract_parameter_declaration
[51b73452]366
[e307e12]367%type<aggKey> aggregate_key aggregate_data aggregate_control
[d0ffed1]368%type<decl> aggregate_type aggregate_type_nobody
[51b73452]369
[9997fee]370%type<decl> assertion assertion_list assertion_list_opt
[51b73452]371
[25744d2]372%type<en> bit_subrange_size_opt bit_subrange_size
[51b73452]373
[84d58c5]374%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[51b73452]375
[4040425]376%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]377
378%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]379%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]380
[d0ffed1]381%type<decl> elaborated_type elaborated_type_nobody
[51b73452]382
[d0ffed1]383%type<decl> enumerator_list enum_type enum_type_nobody
[51b73452]384%type<en> enumerator_value_opt
385
[3d56d15b]386%type<decl> external_definition external_definition_list external_definition_list_opt
387
388%type<decl> exception_declaration
[51b73452]389
[e07caa2]390%type<decl> field_declaration_list_opt field_declaration field_declaring_list_opt field_declarator field_abstract_list_opt field_abstract
[679e644]391%type<en> field field_name_list field_name fraction_constants_opt
[51b73452]392
[4d51835]393%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]394
[d3bc0ad]395%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
396%type<decl> identifier_list
[51b73452]397
[c0aa336]398%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
399%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
400%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]401
[c0aa336]402%type<decl> cfa_array_parameter_1st_dimension
[51b73452]403
[679e644]404%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list cfa_field_abstract_list
[c0aa336]405%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]406
[c0aa336]407%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
408%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]409
[40de461]410%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]411
[c0aa336]412%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]413
[b9be000b]414%type<decl> c_declaration static_assert
[c0aa336]415%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]416%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]417
[2a8427c6]418%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]419
[2871210]420%type<decl> paren_identifier paren_type
[51b73452]421
[0da3e2c]422%type<decl> storage_class storage_class_list
[51b73452]423
[d0ffed1]424%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]425
[5a51798]426%type<tclass> type_class new_type_class
[51b73452]427%type<decl> type_declarator type_declarator_name type_declaring_list
428
[84d58c5]429%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
430%type<decl> typedef typedef_declaration typedef_expression
[c0aa336]431
432%type<decl> variable_type_redeclarator type_ptr type_array type_function
433
434%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]435
[84d58c5]436%type<decl> type type_no_function
437%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]438
[284da8c]439%type<en> type_parameters_opt type_list
[51b73452]440
[a16a7ec]441%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[408ab79]442%type<decl> type_specifier type_specifier_nobody enum_specifier_nobody
[51b73452]443
[c0aa336]444%type<decl> variable_declarator variable_ptr variable_array variable_function
445%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]446
[408ab79]447%type<decl> attribute_list_opt attribute_list attribute_opt attribute attribute_name_list attribute_name
[1db21619]448
[c11e31c]449// initializers
[7fdb94e1]450%type<in> initializer initializer_list_opt initializer_opt
[51b73452]451
[c11e31c]452// designators
[51b73452]453%type<en> designator designator_list designation
454
455
[65d6de4]456// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
457// .---------. matches IF '(' comma_expression ')' statement . (reduce)
458// if ( C ) S1 else S2
459// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]460// Similar issues exit with the waitfor statement.
[51b73452]461
[1efa1e1]462// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
463// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[5b2edbc]464%precedence THEN // rule precedence for IF/WAITFOR statement
465%precedence WOR // token precedence for start of WOR in WAITFOR statement
466%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
467%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
[51b73452]468
[65d6de4]469// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
470// forall( otype T ) struct Foo { T v; };
471// .-----. matches pointer to function returning a generic (which is impossible without a type)
472// Foo ( *fp )( int );
473// `---' matches start of TYPEGENname '('
[fc20514]474// must be:
[a16a7ec]475// Foo( int ) ( *fp )( int );
[fc20514]476// The same problem occurs here:
477// forall( otype T ) struct Foo { T v; } ( *fp )( int );
478// must be:
479// forall( otype T ) struct Foo { T v; } ( int ) ( *fp )( int );
[65d6de4]480
481// Order of these lines matters (low-to-high precedence).
482%precedence TYPEGENname
[284da8c]483%precedence '}'
[65d6de4]484%precedence '('
485
[c786e1d]486// %precedence RESUME
487// %precedence '{'
488// %precedence ')'
489
[f38e7d7]490%locations // support location tracking for error messages
[930f69e]491
[b87a5ed]492%start translation_unit // parse-tree root
[51b73452]493
494%%
[c11e31c]495//************************* Namespace Management ********************************
496
[3d26610]497// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
498// which are lexically identical.
[c11e31c]499//
[3d26610]500// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
501// foo f; // to allow it to appear in this context
[c11e31c]502//
[3d26610]503// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
504// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
505// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
506// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
507// must be distinguished by the lexical scanner.
[c11e31c]508//
[3d26610]509// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
510// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
511// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
512// each context that introduces a name scope, a new level is created in the type table and that level is popped on
513// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
514// This requires distinguishing between type names that are local to the current declaration scope and those that
515// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]516//
[3d26610]517// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
518// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
519// around the list separator.
520//
521// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
522// push pop push pop
[51b73452]523
524push:
[ab57786]525 { typedefTable.enterScope(); }
[4d51835]526 ;
[51b73452]527
528pop:
[ab57786]529 { typedefTable.leaveScope(); }
[4d51835]530 ;
[51b73452]531
[c11e31c]532//************************* CONSTANTS ********************************
[51b73452]533
534constant:
[de62360d]535 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]536 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]537 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
538 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]539 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
540 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]541 ;
[51b73452]542
[5b2edbc]543quasi_keyword: // CFA
544 TIMEOUT
545 | WOR
546 ;
547
[033ff37]548identifier:
[4d51835]549 IDENTIFIER
[5b2edbc]550 | quasi_keyword
[679e644]551 | '@' // CFA
552 { Token tok = { new string( DeclarationNode::anonymous.newName() ), yylval.tok.loc }; $$ = tok; }
[4d51835]553 ;
[51b73452]554
[ab57786]555string_literal:
556 string_literal_list { $$ = build_constantStr( *$1 ); }
557 ;
558
[b87a5ed]559string_literal_list: // juxtaposed strings are concatenated
[ab57786]560 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]561 | string_literal_list STRINGliteral
562 {
[15697ff]563 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]564 delete $2; // allocated by lexer
[ab57786]565 $$ = $1; // conversion from tok to str
[7bf7fb9]566 }
[4d51835]567 ;
[51b73452]568
[c11e31c]569//************************* EXPRESSIONS ********************************
[51b73452]570
571primary_expression:
[4d51835]572 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]573 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]574 | quasi_keyword
575 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[1b29996]576 | tuple
[4d51835]577 | '(' comma_expression ')'
578 { $$ = $2; }
579 | '(' compound_statement ')' // GCC, lambda expression
[408ab79]580 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast<CompoundStmt *>(maybeMoveBuild<Statement>($2) ) ) ); }
[033ff37]581 | type_name '.' identifier // CFA, nested type
[203c667]582 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[679e644]583 | type_name '.' '[' field_name_list ']' // CFA, nested type / tuple field selector
[203c667]584 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]585 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]586 {
587 // add the missing control expression to the GenericExpr and return it
588 $5->control = maybeMoveBuild<Expression>( $3 );
589 $$ = new ExpressionNode( $5 );
590 }
[c786e1d]591 // | RESUME '(' comma_expression ')'
592 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
593 // | RESUME '(' comma_expression ')' compound_statement
594 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
[24c3b67]595 ;
596
597generic_assoc_list: // C11
[d807ca28]598 generic_association
[24c3b67]599 | generic_assoc_list ',' generic_association
[d807ca28]600 {
601 // steal the association node from the singleton and delete the wrapper
602 $1->associations.splice($1->associations.end(), $3->associations);
603 delete $3;
604 $$ = $1;
605 }
[24c3b67]606 ;
607
608generic_association: // C11
609 type_no_function ':' assignment_expression
[d807ca28]610 {
611 // create a GenericExpr wrapper with one association pair
[408ab79]612 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>( $3 ) } } );
[d807ca28]613 }
[24c3b67]614 | DEFAULT ':' assignment_expression
[408ab79]615 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>( $3 ) } } ); }
[4d51835]616 ;
[51b73452]617
618postfix_expression:
[4d51835]619 primary_expression
[7fdb94e1]620 | postfix_expression '[' assignment_expression ']'
[c6b1105]621 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]622 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
623 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
624 // equivalent to the old x[i,j].
[7fdb94e1]625 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[cbbd8fd7]626 | postfix_expression '{' argument_expression_list_opt '}' // CFA, constructor call
[bd3d9e4]627 {
628 Token fn;
629 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
630 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
631 }
[cbbd8fd7]632 | postfix_expression '(' argument_expression_list_opt ')'
[d1625f8]633 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[948fdef]634 | postfix_expression '`' identifier // CFA, postfix call
[60a8062]635 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]636 | constant '`' identifier // CFA, postfix call
[60a8062]637 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]638 | string_literal '`' identifier // CFA, postfix call
[60a8062]639 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), new ExpressionNode( $1 ) ) ); }
[033ff37]640 | postfix_expression '.' identifier
[d1625f8]641 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]642 | postfix_expression '.' INTEGERconstant // CFA, tuple index
643 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]644 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
645 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[679e644]646 | postfix_expression '.' '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]647 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[e307e12]648 | postfix_expression '.' aggregate_control
[312029a]649 { $$ = new ExpressionNode( build_keyword_cast( $3, $1 ) ); }
[033ff37]650 | postfix_expression ARROW identifier
[ee27df2]651 { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); }
[861799c7]652 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
653 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[679e644]654 | postfix_expression ARROW '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]655 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]656 | postfix_expression ICR
[d1625f8]657 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]658 | postfix_expression DECR
[d1625f8]659 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]660 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]661 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]662 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]663 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[cbbd8fd7]664 | '^' primary_expression '{' argument_expression_list_opt '}' // CFA, destructor call
[097e2b0]665 {
[9706554]666 Token fn;
[ecb27a7]667 fn.str = new string( "^?{}" ); // location undefined
668 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]669 }
[4d51835]670 ;
[51b73452]671
[cbbd8fd7]672argument_expression_list_opt:
[757ffed]673 // empty
674 { $$ = nullptr; }
675 | argument_expression
[cbbd8fd7]676 | argument_expression_list_opt ',' argument_expression
[4a063df]677 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]678 ;
[51b73452]679
680argument_expression:
[757ffed]681 '@' // CFA, default parameter
[679e644]682 { SemanticError( yylloc, "Default parameter for argument is currently unimplemented." ); $$ = nullptr; }
683 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]684 | assignment_expression
685 ;
[b87a5ed]686
[679e644]687field_name_list: // CFA, tuple field selector
[4d51835]688 field
[4a063df]689 | field_name_list ',' field { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]690 ;
[b87a5ed]691
692field: // CFA, tuple field selector
[faddbd8]693 field_name
[930f69e]694 | FLOATING_DECIMALconstant field
695 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[679e644]696 | FLOATING_DECIMALconstant '[' field_name_list ']'
[7fdb94e1]697 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]698 | field_name '.' field
[bf32bb8]699 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]700 | field_name '.' '[' field_name_list ']'
[7fdb94e1]701 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]702 | field_name ARROW field
[bf32bb8]703 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]704 | field_name ARROW '[' field_name_list ']'
[7fdb94e1]705 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]706 ;
[51b73452]707
[faddbd8]708field_name:
[df22130]709 INTEGERconstant fraction_constants_opt
[8780e30]710 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]711 | FLOATINGconstant fraction_constants_opt
[8780e30]712 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[033ff37]713 | identifier fraction_constants_opt
[4cb935e]714 {
[84d58c5]715 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
716 }
[1b29996]717 ;
718
[df22130]719fraction_constants_opt:
[1b29996]720 // empty
[8780e30]721 { $$ = nullptr; }
[df22130]722 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]723 {
[930f69e]724 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]725 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
726 }
[faddbd8]727 ;
728
[51b73452]729unary_expression:
[4d51835]730 postfix_expression
[c6b1105]731 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
732 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]733 | constant
[ab57786]734 | string_literal
[d1625f8]735 { $$ = new ExpressionNode( $1 ); }
[4d51835]736 | EXTENSION cast_expression // GCC
[e04ef3a]737 { $$ = $2->set_extension( true ); }
[c6b1105]738 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
739 // { * X; } // dereference X
740 // { * int X; } // CFA declaration of pointer to int
[51e076e]741 | ptrref_operator cast_expression // CFA
[9706554]742 {
743 switch ( $1 ) {
[d9e2280]744 case OperKinds::AddressOf:
[408ab79]745 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) );
[9706554]746 break;
[d9e2280]747 case OperKinds::PointTo:
[d1625f8]748 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]749 break;
[5809461]750 case OperKinds::And:
[408ab79]751 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) ) );
[5809461]752 break;
[9706554]753 default:
754 assert( false );
755 }
756 }
[4d51835]757 | unary_operator cast_expression
[d1625f8]758 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]759 | ICR unary_expression
[d1625f8]760 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]761 | DECR unary_expression
[d1625f8]762 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]763 | SIZEOF unary_expression
[408ab79]764 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[84d58c5]765 | SIZEOF '(' type_no_function ')'
[db70fe4]766 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]767 | ALIGNOF unary_expression // GCC, variable alignment
[408ab79]768 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[a2e0687]769 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]770 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[033ff37]771 | OFFSETOF '(' type_no_function ',' identifier ')'
[d1625f8]772 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[4d51835]773 ;
[51b73452]774
[dd51906]775ptrref_operator:
[d9e2280]776 '*' { $$ = OperKinds::PointTo; }
777 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]778 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]779 | ANDAND { $$ = OperKinds::And; }
[dd51906]780 ;
781
[51b73452]782unary_operator:
[d9e2280]783 '+' { $$ = OperKinds::UnPlus; }
784 | '-' { $$ = OperKinds::UnMinus; }
785 | '!' { $$ = OperKinds::Neg; }
786 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]787 ;
[51b73452]788
789cast_expression:
[4d51835]790 unary_expression
[84d58c5]791 | '(' type_no_function ')' cast_expression
[d1625f8]792 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[e307e12]793 | '(' aggregate_control '&' ')' cast_expression // CFA
[312029a]794 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[fae90d5f]795 | '(' VIRTUAL ')' cast_expression // CFA
[408ab79]796 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]797 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[408ab79]798 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $5 ), maybeMoveBuildType( $3 ) ) ); }
[1528a2c]799 | '(' RETURN type_no_function ')' cast_expression // CFA
800 { SemanticError( yylloc, "Return cast is currently unimplemented." ); $$ = nullptr; }
801 | '(' COERCE type_no_function ')' cast_expression // CFA
802 { SemanticError( yylloc, "Coerce cast is currently unimplemented." ); $$ = nullptr; }
803 | '(' qualifier_cast_list ')' cast_expression // CFA
804 { SemanticError( yylloc, "Qualifier cast is currently unimplemented." ); $$ = nullptr; }
[84d58c5]805// | '(' type_no_function ')' tuple
[1b29996]806// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]807 ;
[51b73452]808
[1528a2c]809qualifier_cast_list:
810 cast_modifier type_qualifier_name
811 | cast_modifier MUTEX
812 | qualifier_cast_list cast_modifier type_qualifier_name
813 | qualifier_cast_list cast_modifier MUTEX
814 ;
815
816cast_modifier:
817 '-'
818 | '+'
819 ;
820
[994d080]821exponential_expression:
[4d51835]822 cast_expression
[994d080]823 | exponential_expression '\\' cast_expression
[e5f2a67]824 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]825 ;
826
827multiplicative_expression:
828 exponential_expression
829 | multiplicative_expression '*' exponential_expression
[d1625f8]830 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]831 | multiplicative_expression '/' exponential_expression
[d1625f8]832 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]833 | multiplicative_expression '%' exponential_expression
[d1625f8]834 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]835 ;
[51b73452]836
837additive_expression:
[4d51835]838 multiplicative_expression
839 | additive_expression '+' multiplicative_expression
[d1625f8]840 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]841 | additive_expression '-' multiplicative_expression
[d1625f8]842 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]843 ;
[51b73452]844
845shift_expression:
[4d51835]846 additive_expression
847 | shift_expression LS additive_expression
[d1625f8]848 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]849 | shift_expression RS additive_expression
[d1625f8]850 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]851 ;
[51b73452]852
853relational_expression:
[4d51835]854 shift_expression
855 | relational_expression '<' shift_expression
[d1625f8]856 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]857 | relational_expression '>' shift_expression
[d1625f8]858 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]859 | relational_expression LE shift_expression
[d1625f8]860 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]861 | relational_expression GE shift_expression
[d1625f8]862 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]863 ;
[51b73452]864
865equality_expression:
[4d51835]866 relational_expression
867 | equality_expression EQ relational_expression
[d1625f8]868 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]869 | equality_expression NE relational_expression
[d1625f8]870 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]871 ;
[51b73452]872
873AND_expression:
[4d51835]874 equality_expression
875 | AND_expression '&' equality_expression
[d1625f8]876 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]877 ;
[51b73452]878
879exclusive_OR_expression:
[4d51835]880 AND_expression
881 | exclusive_OR_expression '^' AND_expression
[d1625f8]882 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]883 ;
[51b73452]884
885inclusive_OR_expression:
[4d51835]886 exclusive_OR_expression
887 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]888 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]889 ;
[51b73452]890
891logical_AND_expression:
[4d51835]892 inclusive_OR_expression
893 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]894 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]895 ;
[51b73452]896
897logical_OR_expression:
[4d51835]898 logical_AND_expression
899 | logical_OR_expression OROR logical_AND_expression
[d1625f8]900 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]901 ;
[51b73452]902
903conditional_expression:
[4d51835]904 logical_OR_expression
905 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]906 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]907 // FIX ME: computes $1 twice
[4d51835]908 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]909 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]910 ;
[51b73452]911
912constant_expression:
[4d51835]913 conditional_expression
914 ;
[51b73452]915
916assignment_expression:
[4d51835]917 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
918 conditional_expression
919 | unary_expression assignment_operator assignment_expression
[9867cdb]920 {
[25744d2]921// if ( $2 == OperKinds::AtAssn ) {
922// SemanticError( yylloc, "C @= assignment is currently unimplemented." ); $$ = nullptr;
923// } else {
[9867cdb]924 $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) );
[25744d2]925// } // if
[9867cdb]926 }
[7fdb94e1]927 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]928 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]929 ;
[51b73452]930
931assignment_expression_opt:
[4d51835]932 // empty
[d1625f8]933 { $$ = nullptr; }
[4d51835]934 | assignment_expression
935 ;
[b87a5ed]936
[9706554]937assignment_operator:
[d9e2280]938 '=' { $$ = OperKinds::Assign; }
[a839867]939 | ATassign { $$ = OperKinds::AtAssn; }
[e5f2a67]940 | EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]941 | MULTassign { $$ = OperKinds::MulAssn; }
942 | DIVassign { $$ = OperKinds::DivAssn; }
943 | MODassign { $$ = OperKinds::ModAssn; }
944 | PLUSassign { $$ = OperKinds::PlusAssn; }
945 | MINUSassign { $$ = OperKinds::MinusAssn; }
946 | LSassign { $$ = OperKinds::LSAssn; }
947 | RSassign { $$ = OperKinds::RSAssn; }
948 | ANDassign { $$ = OperKinds::AndAssn; }
949 | ERassign { $$ = OperKinds::ERAssn; }
950 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]951 ;
[9706554]952
[b87a5ed]953tuple: // CFA, tuple
[de62360d]954 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]955 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]956// '[' ']'
957// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]958// | '[' push assignment_expression pop ']'
[1b29996]959// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]960 '[' ',' tuple_expression_list ']'
961 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
962 | '[' push assignment_expression pop ',' tuple_expression_list ']'
[4a063df]963 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $6 ) ) )); }
[4d51835]964 ;
[51b73452]965
966tuple_expression_list:
[0a6d8204]967 assignment_expression
968 | '@' // CFA
969 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
970 | tuple_expression_list ',' assignment_expression
[4a063df]971 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[0a6d8204]972 | tuple_expression_list ',' '@'
973 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
[4d51835]974 ;
[51b73452]975
976comma_expression:
[4d51835]977 assignment_expression
[9706554]978 | comma_expression ',' assignment_expression
[408ab79]979 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]980 ;
[51b73452]981
982comma_expression_opt:
[4d51835]983 // empty
[58dd019]984 { $$ = nullptr; }
[4d51835]985 | comma_expression
986 ;
[51b73452]987
[c11e31c]988//*************************** STATEMENTS *******************************
[51b73452]989
990statement:
[4d51835]991 labeled_statement
992 | compound_statement
[c0a33d2]993 | expression_statement
[4d51835]994 | selection_statement
995 | iteration_statement
996 | jump_statement
[8b47e50]997 | with_statement
[b6b3c42]998 | mutex_statement
[5b2edbc]999 | waitfor_statement
[4d51835]1000 | exception_statement
[2a8427c6]1001 | enable_disable_statement
[fae90d5f]1002 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]1003 | asm_statement
[61fc4f6]1004 | DIRECTIVE
[6d539f83]1005 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]1006 ;
[51b73452]1007
1008labeled_statement:
[033ff37]1009 // labels cannot be identifiers 0 or 1
[44a81853]1010 identifier_or_type_name ':' attribute_list_opt statement
[6d01d89]1011 { $$ = $4->add_label( $1, $3 ); }
[4d51835]1012 ;
[51b73452]1013
1014compound_statement:
[4d51835]1015 '{' '}'
[e82aa9df]1016 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]1017 | '{' push
[51b1202]1018 local_label_declaration_opt // GCC, local labels
[9bd6105]1019 statement_decl_list // C99, intermix declarations and statements
[c0aa336]1020 pop '}'
[35718a9]1021 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]1022 ;
[b87a5ed]1023
[9bd6105]1024statement_decl_list: // C99
1025 statement_decl
[35718a9]1026 | statement_decl_list statement_decl
[6d01d89]1027 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1028 ;
[51b73452]1029
[9bd6105]1030statement_decl:
[4d51835]1031 declaration // CFA, new & old style declarations
[e82aa9df]1032 { $$ = new StatementNode( $1 ); }
[4d51835]1033 | EXTENSION declaration // GCC
[6d01d89]1034 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[4d51835]1035 | function_definition
[e82aa9df]1036 { $$ = new StatementNode( $1 ); }
[c0aa336]1037 | EXTENSION function_definition // GCC
[6d01d89]1038 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[35718a9]1039 | statement
[4d51835]1040 ;
[51b73452]1041
[9bd6105]1042statement_list_nodecl:
[4d51835]1043 statement
[9bd6105]1044 | statement_list_nodecl statement
[6d01d89]1045 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1046 ;
[51b73452]1047
1048expression_statement:
[4d51835]1049 comma_expression_opt ';'
[e82aa9df]1050 { $$ = new StatementNode( build_expr( $1 ) ); }
[4d51835]1051 ;
[51b73452]1052
1053selection_statement:
[3d26610]1054 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1055 // the inherent S/R conflict with THEN/ELSE.
1056 push if_statement pop
1057 { $$ = $2; }
[4cc585b]1058 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1059 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1060 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1061 {
[6a276a0]1062 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1063 // The semantics of the declaration list is changed to include associated initialization, which is performed
1064 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1065 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1066 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1067 // statement.
[a7741435]1068 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1069 }
[4d51835]1070 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1071 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1072 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1073 {
[6a276a0]1074 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1075 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1076 }
[4d51835]1077 ;
[b87a5ed]1078
[3d26610]1079if_statement:
1080 IF '(' if_control_expression ')' statement %prec THEN
1081 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1082 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[3d26610]1083 | IF '(' if_control_expression ')' statement ELSE statement
[a025ea8]1084 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1085 ;
1086
[936e9f4]1087if_control_expression:
[35718a9]1088 comma_expression
[f271bdd]1089 { $$ = new IfCtrl( nullptr, $1 ); }
[35718a9]1090 | c_declaration // no semi-colon
[f271bdd]1091 { $$ = new IfCtrl( $1, nullptr ); }
[35718a9]1092 | cfa_declaration // no semi-colon
[f271bdd]1093 { $$ = new IfCtrl( $1, nullptr ); }
[6d49ea3]1094 | declaration comma_expression // semi-colon separated
[f271bdd]1095 { $$ = new IfCtrl( $1, $2 ); }
[936e9f4]1096 ;
1097
[de62360d]1098// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1099// clause allows a list of values and subranges.
[b87a5ed]1100
1101case_value: // CFA
[4d51835]1102 constant_expression { $$ = $1; }
1103 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[408ab79]1104 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1105 | subrange // CFA, subrange
1106 ;
[b87a5ed]1107
1108case_value_list: // CFA
[e82aa9df]1109 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1110 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1111 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1112 ;
[b87a5ed]1113
1114case_label: // CFA
[8688ce1]1115 CASE case_value_list ':' { $$ = $2; }
[e82aa9df]1116 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1117 // A semantic check is required to ensure only one default clause per switch/choose statement.
1118 ;
[b87a5ed]1119
[6a276a0]1120//label_list_opt:
1121// // empty
1122// | identifier_or_type_name ':'
1123// | label_list_opt identifier_or_type_name ':'
1124// ;
1125
[b87a5ed]1126case_label_list: // CFA
[4d51835]1127 case_label
[1d4580a]1128 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1129 ;
[b87a5ed]1130
1131case_clause: // CFA
[a025ea8]1132 case_label_list statement { $$ = $1->append_last_case( maybe_build_compound( $2 ) ); }
[4d51835]1133 ;
[b87a5ed]1134
1135switch_clause_list_opt: // CFA
[4d51835]1136 // empty
[58dd019]1137 { $$ = nullptr; }
[4d51835]1138 | switch_clause_list
1139 ;
[b87a5ed]1140
1141switch_clause_list: // CFA
[9bd6105]1142 case_label_list statement_list_nodecl
[e82aa9df]1143 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1144 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1145 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1146 ;
[b87a5ed]1147
[51b73452]1148iteration_statement:
[401e61f]1149 WHILE '(' push if_control_expression ')' statement pop
[a025ea8]1150 { $$ = new StatementNode( build_while( $4, maybe_build_compound( $6 ) ) ); }
[f271bdd]1151 | WHILE '(' ')' statement // CFA => while ( 1 )
[a025ea8]1152 { $$ = new StatementNode( build_while( new IfCtrl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) ); }
[4d51835]1153 | DO statement WHILE '(' comma_expression ')' ';'
[a025ea8]1154 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
[f271bdd]1155 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[a025ea8]1156 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) ); }
[6d01d89]1157 | FOR '(' push for_control_expression_list ')' statement pop
[a025ea8]1158 { $$ = new StatementNode( build_for( $4, maybe_build_compound( $6 ) ) ); }
[f1aeede]1159 | FOR '(' ')' statement // CFA => for ( ;; )
[a025ea8]1160 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[4d51835]1161 ;
[51b73452]1162
[6d01d89]1163for_control_expression_list:
1164 for_control_expression
1165 | for_control_expression_list ':' for_control_expression
[67d4e37]1166 // ForCtrl + ForCtrl:
1167 // init + init => multiple declaration statements that are hoisted
1168 // condition + condition => (expression) && (expression)
1169 // change + change => (expression), (expression)
1170 {
1171 $1->init->set_last( $3->init );
1172 if ( $1->condition ) {
1173 if ( $3->condition ) {
1174 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1175 } // if
1176 } else $1->condition = $3->condition;
1177 if ( $1->change ) {
1178 if ( $3->change ) {
1179 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1180 } // if
1181 } else $1->change = $3->change;
1182 $$ = $1;
1183 }
[6d01d89]1184 ;
1185
[51b73452]1186for_control_expression:
[6d01d89]1187 ';' comma_expression_opt ';' comma_expression_opt
1188 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1189 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1190 { $$ = new ForCtrl( $1, $3, $5 ); }
1191 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1192 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1193
[6d01d89]1194 | comma_expression // CFA
[f1aeede]1195 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1196 OperKinds::LThan, $1->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1197 | '=' comma_expression // CFA
[9853d9b0]1198 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1199 OperKinds::LEThan, $2->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1200 | comma_expression inclexcl comma_expression // CFA
[ee27df2]1201 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1202 | comma_expression inclexcl comma_expression '~' comma_expression // CFA
[cc22003]1203 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[cbbd8fd7]1204 | comma_expression ';' // CFA
1205 { $$ = forCtrl( new ExpressionNode( build_constantInteger( *new string( "0u" ) ) ), $1, nullptr, OperKinds::LThan, nullptr, nullptr ); }
[f1aeede]1206 | comma_expression ';' comma_expression // CFA
1207 { $$ = forCtrl( $3, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1208 OperKinds::LThan, $3->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1209 | comma_expression ';' '=' comma_expression // CFA
[332bd33]1210 { $$ = forCtrl( $4, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1211 OperKinds::LEThan, $4->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1212 | comma_expression ';' comma_expression inclexcl comma_expression // CFA
[f1aeede]1213 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1214 | comma_expression ';' comma_expression inclexcl comma_expression '~' comma_expression // CFA
[f1aeede]1215 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, $7 ); }
[67d4e37]1216
1217 // There is a S/R conflicit if ~ and -~ are factored out.
1218 | comma_expression ';' comma_expression '~' '@' // CFA
1219 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1220 | comma_expression ';' comma_expression ErangeDown '@' // CFA
1221 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[2d2df9f]1222 | comma_expression ';' comma_expression '~' '@' '~' comma_expression // CFA
1223 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, $7 ); }
[1b54b54]1224 | comma_expression ';' comma_expression ErangeDown '@' '~' comma_expression // CFA
1225 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, $7 ); }
[2d2df9f]1226 | comma_expression ';' comma_expression '~' '@' '~' '@' // CFA
1227 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, nullptr ); }
[d1625f8]1228 ;
[51b73452]1229
[cc22003]1230inclexcl:
1231 '~'
1232 { $$ = OperKinds::LThan; }
[d69f4bb4]1233 | ErangeUpEq
[cc22003]1234 { $$ = OperKinds::LEThan; }
[d69f4bb4]1235 | ErangeDown
1236 { $$ = OperKinds::GThan; }
1237 | ErangeDownEq
1238 { $$ = OperKinds::GEThan; }
[cc22003]1239 ;
1240
[51b73452]1241jump_statement:
[44a81853]1242 GOTO identifier_or_type_name ';'
[ab57786]1243 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1244 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1245 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1246 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1247 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1248 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
1249 | fall_through_name ';' // CFA
1250 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
1251 | fall_through_name identifier_or_type_name ';' // CFA
1252 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1253 | fall_through_name DEFAULT ';' // CFA
1254 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1255 | CONTINUE ';'
[de62360d]1256 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1257 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1258 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1259 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1260 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1261 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1262 | BREAK ';'
[de62360d]1263 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1264 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1265 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1266 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1267 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1268 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1269 | RETURN comma_expression_opt ';'
[e82aa9df]1270 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1271 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1272 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1273 | SUSPEND ';'
[427854b]1274 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1275 | SUSPEND compound_statement
[427854b]1276 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1277 | SUSPEND COROUTINE ';'
[427854b]1278 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1279 | SUSPEND COROUTINE compound_statement
[427854b]1280 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1281 | SUSPEND GENERATOR ';'
[427854b]1282 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1283 | SUSPEND GENERATOR compound_statement
[427854b]1284 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1285 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1286 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1287 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1288 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1289 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1290 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1291 ;
[51b73452]1292
[6a276a0]1293fall_through_name: // CFA
1294 FALLTHRU
1295 | FALLTHROUGH
1296 ;
1297
[8b47e50]1298with_statement:
[5b2edbc]1299 WITH '(' tuple_expression_list ')' statement
[a378ca7]1300 {
1301 $$ = new StatementNode( build_with( $3, $5 ) );
1302 }
[5b2edbc]1303 ;
1304
[b6b3c42]1305// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1306mutex_statement:
[cbbd8fd7]1307 MUTEX '(' argument_expression_list_opt ')' statement
[fae90d5f]1308 { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; }
[b6b3c42]1309 ;
1310
[51d6d6a]1311when_clause:
[6a276a0]1312 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1313 ;
1314
[5b2edbc]1315when_clause_opt:
1316 // empty
[135b431]1317 { $$ = nullptr; }
[51d6d6a]1318 | when_clause
[5b2edbc]1319 ;
1320
1321waitfor:
[713926ca]1322 WAITFOR '(' cast_expression ')'
1323 { $$ = $3; }
[cbbd8fd7]1324// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1325// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1326 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1327 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1328 ;
1329
1330cast_expression_list:
1331 cast_expression
1332 | cast_expression_list ',' cast_expression
[a491a3c]1333 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1334 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1335 ;
1336
1337timeout:
[6a276a0]1338 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1339 ;
1340
1341waitfor_clause:
[51d6d6a]1342 when_clause_opt waitfor statement %prec THEN
[a025ea8]1343 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1344 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1345 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1346 | when_clause_opt timeout statement %prec THEN
[a025ea8]1347 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1348 | when_clause_opt ELSE statement
[a025ea8]1349 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[51d6d6a]1350 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
[713926ca]1351 | when_clause_opt timeout statement WOR ELSE statement
1352 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1353 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1354 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1355 ;
1356
1357waitfor_statement:
[51d6d6a]1358 when_clause_opt waitfor statement %prec THEN
[135b431]1359 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1360 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1361 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1362 ;
1363
[51b73452]1364exception_statement:
[cfaabe2c]1365 TRY compound_statement handler_clause
[e82aa9df]1366 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1367 | TRY compound_statement finally_clause
[e82aa9df]1368 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1369 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1370 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1371 ;
[51b73452]1372
1373handler_clause:
[098f7ff]1374 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1375 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1376 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1377 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1378 ;
1379
1380handler_predicate_opt:
[7fdb94e1]1381 // empty
[cbce272]1382 { $$ = nullptr; }
[6a276a0]1383 | ';' conditional_expression { $$ = $2; }
[307a732]1384 ;
1385
1386handler_key:
[6a276a0]1387 CATCH { $$ = CatchStmt::Terminate; }
1388 | CATCHRESUME { $$ = CatchStmt::Resume; }
[4d51835]1389 ;
[51b73452]1390
1391finally_clause:
[6a276a0]1392 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1393 ;
[51b73452]1394
1395exception_declaration:
[d0ffed1]1396 // No SUE declaration in parameter list.
1397 type_specifier_nobody
1398 | type_specifier_nobody declarator
[c0a33d2]1399 { $$ = $2->addType( $1 ); }
[d0ffed1]1400 | type_specifier_nobody variable_abstract_declarator
[4d51835]1401 { $$ = $2->addType( $1 ); }
[033ff37]1402 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1403 { $$ = $1->addName( $2 ); }
[c0aa336]1404 | cfa_abstract_declarator_tuple // CFA
[4d51835]1405 ;
[51b73452]1406
[2a8427c6]1407enable_disable_statement:
1408 enable_disable_key identifier_list compound_statement
1409 ;
1410
1411enable_disable_key:
1412 ENABLE
1413 | DISABLE
1414 ;
1415
[51b73452]1416asm_statement:
[ab57786]1417 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1418 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1419 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1420 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1421 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1422 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1423 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1424 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1425 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1426 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1427 ;
1428
1429asm_volatile_opt: // GCC
1430 // empty
1431 { $$ = false; }
1432 | VOLATILE
1433 { $$ = true; }
[4d51835]1434 ;
[b87a5ed]1435
1436asm_operands_opt: // GCC
[4d51835]1437 // empty
[58dd019]1438 { $$ = nullptr; } // use default argument
[4d51835]1439 | asm_operands_list
1440 ;
[b87a5ed]1441
1442asm_operands_list: // GCC
[4d51835]1443 asm_operand
1444 | asm_operands_list ',' asm_operand
[4a063df]1445 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1446 ;
[b87a5ed]1447
1448asm_operand: // GCC
[ab57786]1449 string_literal '(' constant_expression ')'
[408ab79]1450 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1451 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1452 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1453 ;
1454
[4e06c1e]1455asm_clobbers_list_opt: // GCC
[7f5566b]1456 // empty
[58dd019]1457 { $$ = nullptr; } // use default argument
[ab57786]1458 | string_literal
[d1625f8]1459 { $$ = new ExpressionNode( $1 ); }
[ab57786]1460 | asm_clobbers_list_opt ',' string_literal
[4a063df]1461 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1462 ;
[b87a5ed]1463
[7f5566b]1464label_list:
[033ff37]1465 identifier
[ab57786]1466 {
1467 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1468 delete $1; // allocated by lexer
1469 }
[033ff37]1470 | label_list ',' identifier
[ab57786]1471 {
1472 $$ = $1; $1->labels.push_back( *$3 );
1473 delete $3; // allocated by lexer
1474 }
[4d51835]1475 ;
[51b73452]1476
[c11e31c]1477//******************************* DECLARATIONS *********************************
[51b73452]1478
[b87a5ed]1479declaration_list_opt: // used at beginning of switch statement
[35718a9]1480 // empty
[58dd019]1481 { $$ = nullptr; }
[4d51835]1482 | declaration_list
1483 ;
[51b73452]1484
1485declaration_list:
[4d51835]1486 declaration
[35718a9]1487 | declaration_list declaration
1488 { $$ = $1->appendList( $2 ); }
[4d51835]1489 ;
[51b73452]1490
[407bde5]1491KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1492 // empty
[58dd019]1493 { $$ = nullptr; }
[35718a9]1494 | KR_parameter_list
[4d51835]1495 ;
[51b73452]1496
[35718a9]1497KR_parameter_list:
[4cc585b]1498 push c_declaration pop ';'
1499 { $$ = $2; }
[35718a9]1500 | KR_parameter_list push c_declaration pop ';'
[4d51835]1501 { $$ = $1->appendList( $3 ); }
1502 ;
[b87a5ed]1503
[51b1202]1504local_label_declaration_opt: // GCC, local label
[4d51835]1505 // empty
[51b1202]1506 | local_label_declaration_list
[4d51835]1507 ;
[b87a5ed]1508
[51b1202]1509local_label_declaration_list: // GCC, local label
1510 LABEL local_label_list ';'
1511 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1512 ;
[b87a5ed]1513
[51b1202]1514local_label_list: // GCC, local label
[033ff37]1515 identifier_or_type_name
1516 | local_label_list ',' identifier_or_type_name
[4d51835]1517 ;
[b87a5ed]1518
[936e9f4]1519declaration: // old & new style declarations
[35718a9]1520 c_declaration ';'
1521 | cfa_declaration ';' // CFA
[b47b827]1522 | static_assert // C11
[4d51835]1523 ;
[b87a5ed]1524
[b9be000b]1525static_assert:
1526 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1527 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1528 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1529 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1530
[de62360d]1531// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1532// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1533// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1534// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1535// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1536// block, but cannot be mixed within a specific declaration.
[c11e31c]1537//
[b87a5ed]1538// CFA C
1539// [10] int x; int x[10]; // array of 10 integers
1540// [10] * char y; char *y[10]; // array of 10 pointers to char
1541
[c0aa336]1542cfa_declaration: // CFA
[4cc585b]1543 cfa_variable_declaration
1544 | cfa_typedef_declaration
1545 | cfa_function_declaration
1546 | type_declaring_list
[2501ae5]1547 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1548 | trait_specifier
[4d51835]1549 ;
[b87a5ed]1550
[c0aa336]1551cfa_variable_declaration: // CFA
1552 cfa_variable_specifier initializer_opt
[7fdb94e1]1553 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1554 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1555 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1556 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1557 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1558 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1559 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1560 ;
[b87a5ed]1561
[c0aa336]1562cfa_variable_specifier: // CFA
[de62360d]1563 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1564 // storage-class
[c0aa336]1565 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1566 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1567 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1568 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1569 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1570 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1571 ;
[b87a5ed]1572
[c0aa336]1573cfa_function_declaration: // CFA
1574 cfa_function_specifier
1575 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1576 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1577 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1578 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1579 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1580 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1581 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1582 {
[481115f]1583 // Append the return type at the start (left-hand-side) to each identifier in the list.
1584 DeclarationNode * ret = new DeclarationNode;
1585 ret->type = maybeClone( $1->type->base );
[40de461]1586 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1587 }
1588 ;
[b87a5ed]1589
[c0aa336]1590cfa_function_specifier: // CFA
[40de461]1591// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1592// {
1593// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1594// }
[40de461]1595// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1596// {
1597// typedefTable.setNextIdentifier( *$5 );
1598// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1599// }
[40de461]1600// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1601// {
1602// typedefTable.setNextIdentifier( *$5 );
1603// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1604// }
1605// | '[' ']' typegen_name
1606 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1607 //
[40de461]1608 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1609 // '[' ']' type_specifier
1610 //
[2871210]1611 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1612 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1613 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1614 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1615 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1616 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1617 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1618 ;
[b87a5ed]1619
[c0aa336]1620cfa_function_return: // CFA
[c0a33d2]1621 '[' push cfa_parameter_list pop ']'
1622 { $$ = DeclarationNode::newTuple( $3 ); }
1623 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1624 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1625 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1626 ;
[b87a5ed]1627
[c0aa336]1628cfa_typedef_declaration: // CFA
1629 TYPEDEF cfa_variable_specifier
[4d51835]1630 {
[ecae5860]1631 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1632 $$ = $2->addTypedef();
1633 }
[c0aa336]1634 | TYPEDEF cfa_function_specifier
[4d51835]1635 {
[ecae5860]1636 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1637 $$ = $2->addTypedef();
1638 }
[033ff37]1639 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1640 {
[ecae5860]1641 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1642 $$ = $1->appendList( $1->cloneType( $5 ) );
1643 }
1644 ;
[b87a5ed]1645
[de62360d]1646// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1647// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1648
1649typedef_declaration:
[4d51835]1650 TYPEDEF type_specifier declarator
1651 {
[ecae5860]1652 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1653 $$ = $3->addType( $2 )->addTypedef();
1654 }
1655 | typedef_declaration pop ',' push declarator
1656 {
[ecae5860]1657 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1658 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1659 }
[de62360d]1660 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1661 {
[ecae5860]1662 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1663 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1664 }
1665 | type_specifier TYPEDEF declarator
1666 {
[ecae5860]1667 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1668 $$ = $3->addType( $1 )->addTypedef();
1669 }
1670 | type_specifier TYPEDEF type_qualifier_list declarator
1671 {
[ecae5860]1672 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1673 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1674 }
1675 ;
[b87a5ed]1676
[721f17a]1677typedef_expression:
[25744d2]1678 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1679 TYPEDEF identifier '=' assignment_expression
[4d51835]1680 {
[25744d2]1681 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1682 }
[033ff37]1683 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1684 {
[25744d2]1685 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1686 }
1687 ;
[51b73452]1688
[c0aa336]1689c_declaration:
[4cc585b]1690 declaration_specifier declaring_list
[7fdb94e1]1691 { $$ = distAttr( $1, $2 ); }
[4cc585b]1692 | typedef_declaration
[25744d2]1693 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1694 | sue_declaration_specifier
[4d51835]1695 ;
[51b73452]1696
1697declaring_list:
[de62360d]1698 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1699 // storage-class
[c0aa336]1700 declarator asm_name_opt initializer_opt
[7fdb94e1]1701 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1702 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1703 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1704 ;
[b87a5ed]1705
1706declaration_specifier: // type specifier + storage class
[4d51835]1707 basic_declaration_specifier
1708 | sue_declaration_specifier
[84d58c5]1709 | type_declaration_specifier
[4d51835]1710 ;
[b87a5ed]1711
[d0ffed1]1712declaration_specifier_nobody: // type specifier + storage class - {...}
1713 // Preclude SUE declarations in restricted scopes:
1714 //
1715 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1716 //
1717 // because it is impossible to call f due to name equivalence.
1718 basic_declaration_specifier
1719 | sue_declaration_specifier_nobody
[84d58c5]1720 | type_declaration_specifier
[d0ffed1]1721 ;
1722
1723type_specifier: // type specifier
[4d51835]1724 basic_type_specifier
1725 | sue_type_specifier
[84d58c5]1726 | type_type_specifier
[4d51835]1727 ;
[b87a5ed]1728
[d0ffed1]1729type_specifier_nobody: // type specifier - {...}
1730 // Preclude SUE declarations in restricted scopes:
1731 //
1732 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1733 //
1734 // because it is impossible to call f due to name equivalence.
1735 basic_type_specifier
1736 | sue_type_specifier_nobody
[84d58c5]1737 | type_type_specifier
[d0ffed1]1738 ;
1739
[408ab79]1740enum_specifier_nobody: // type specifier - {...}
1741 // Preclude SUE declarations in restricted scopes:
1742 //
1743 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1744 //
1745 // because it is impossible to call f due to name equivalence.
1746 basic_type_specifier
1747 | sue_type_specifier_nobody
1748 ;
1749
[b87a5ed]1750type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1751 // empty
[58dd019]1752 { $$ = nullptr; }
[4d51835]1753 | type_qualifier_list
1754 ;
[51b73452]1755
1756type_qualifier_list:
[de62360d]1757 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1758 //
[de62360d]1759 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1760 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1761 // appeared only once.
[4d51835]1762 type_qualifier
1763 | type_qualifier_list type_qualifier
1764 { $$ = $1->addQualifiers( $2 ); }
1765 ;
[51b73452]1766
1767type_qualifier:
[4d51835]1768 type_qualifier_name
1769 | attribute
1770 ;
[51b73452]1771
1772type_qualifier_name:
[4d51835]1773 CONST
[738e304]1774 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1775 | RESTRICT
[738e304]1776 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1777 | VOLATILE
[738e304]1778 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1779 | ATOMIC
[738e304]1780 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1781 | forall
1782 ;
1783
1784forall:
[35718a9]1785 FORALL '(' type_parameter_list ')' // CFA
1786 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1787 ;
[51b73452]1788
1789declaration_qualifier_list:
[4d51835]1790 storage_class_list
[de62360d]1791 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1792 { $$ = $1->addQualifiers( $2 ); }
1793 | declaration_qualifier_list type_qualifier_list storage_class_list
1794 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1795 ;
[51b73452]1796
1797storage_class_list:
[de62360d]1798 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1799 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1800 //
[de62360d]1801 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1802 // specifiers in a declaration.
[4d51835]1803 storage_class
1804 | storage_class_list storage_class
1805 { $$ = $1->addQualifiers( $2 ); }
1806 ;
[51b73452]1807
1808storage_class:
[4d51835]1809 EXTERN
[68fe077a]1810 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1811 | STATIC
[68fe077a]1812 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1813 | AUTO
[68fe077a]1814 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1815 | REGISTER
[68fe077a]1816 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1817 | THREADLOCAL // C11
[68fe077a]1818 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1819 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1820 | INLINE // C99
[ddfd945]1821 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1822 | FORTRAN // C99
[ddfd945]1823 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1824 | NORETURN // C11
[ddfd945]1825 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1826 ;
[51b73452]1827
1828basic_type_name:
[201aeb9]1829 VOID
[4d51835]1830 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1831 | BOOL // C99
1832 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1833 | CHAR
1834 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1835 | INT
1836 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1837 | INT128
1838 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1839 | UINT128
1840 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1841 | FLOAT
1842 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1843 | DOUBLE
1844 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1845 | uuFLOAT80
1846 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1847 | uuFLOAT128
1848 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1849 | uFLOAT16
1850 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1851 | uFLOAT32
1852 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1853 | uFLOAT32X
1854 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1855 | uFLOAT64
1856 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1857 | uFLOAT64X
1858 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1859 | uFLOAT128
1860 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[4d51835]1861 | COMPLEX // C99
[5b639ee]1862 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1863 | IMAGINARY // C99
[5b639ee]1864 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1865 | SIGNED
1866 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1867 | UNSIGNED
1868 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1869 | SHORT
1870 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1871 | LONG
1872 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1873 | VALIST // GCC, __builtin_va_list
1874 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1875 | AUTO_TYPE
1876 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[4d51835]1877 ;
[51b73452]1878
1879basic_declaration_specifier:
[4d51835]1880 // A semantic check is necessary for conflicting storage classes.
1881 basic_type_specifier
1882 | declaration_qualifier_list basic_type_specifier
1883 { $$ = $2->addQualifiers( $1 ); }
1884 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1885 { $$ = $1->addQualifiers( $2 ); }
1886 | basic_declaration_specifier storage_class type_qualifier_list
1887 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1888 | basic_declaration_specifier storage_class basic_type_specifier
1889 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1890 ;
[51b73452]1891
1892basic_type_specifier:
[84d58c5]1893 direct_type
[f38e7d7]1894 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1895 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1896 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1897 ;
[51b73452]1898
[84d58c5]1899direct_type:
[4d51835]1900 basic_type_name
1901 | type_qualifier_list basic_type_name
1902 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1903 | direct_type type_qualifier
[4d51835]1904 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1905 | direct_type basic_type_name
[4d51835]1906 { $$ = $1->addType( $2 ); }
1907 ;
[51b73452]1908
[84d58c5]1909indirect_type:
[b6ad601]1910 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]1911 { $$ = $3; }
[b6ad601]1912 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]1913 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]1914 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
1915 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
1916 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
1917 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]1918 | ZERO_T // CFA
1919 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1920 | ONE_T // CFA
1921 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1922 ;
[51b73452]1923
[d0ffed1]1924sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1925 sue_type_specifier
1926 | declaration_qualifier_list sue_type_specifier
1927 { $$ = $2->addQualifiers( $1 ); }
1928 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1929 { $$ = $1->addQualifiers( $2 ); }
1930 | sue_declaration_specifier storage_class type_qualifier_list
1931 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1932 ;
[51b73452]1933
[d0ffed1]1934sue_type_specifier: // struct, union, enum + type specifier
1935 elaborated_type
[fdca7c6]1936 | type_qualifier_list
1937 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1938 elaborated_type
1939 { $$ = $3->addQualifiers( $1 ); }
[4d51835]1940 | sue_type_specifier type_qualifier
[284da8c]1941 {
1942 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
1943 $$ = $1->addQualifiers( $2 );
1944 }
[4d51835]1945 ;
[51b73452]1946
[d0ffed1]1947sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1948 sue_type_specifier_nobody
1949 | declaration_qualifier_list sue_type_specifier_nobody
1950 { $$ = $2->addQualifiers( $1 ); }
1951 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1952 { $$ = $1->addQualifiers( $2 ); }
1953 | sue_declaration_specifier_nobody storage_class type_qualifier_list
1954 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1955 ;
1956
1957sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1958 elaborated_type_nobody
1959 | type_qualifier_list elaborated_type_nobody
1960 { $$ = $2->addQualifiers( $1 ); }
1961 | sue_type_specifier_nobody type_qualifier
1962 { $$ = $1->addQualifiers( $2 ); }
1963 ;
1964
[84d58c5]1965type_declaration_specifier:
1966 type_type_specifier
1967 | declaration_qualifier_list type_type_specifier
[4d51835]1968 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1969 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]1970 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1971 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]1972 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1973 ;
[b87a5ed]1974
[84d58c5]1975type_type_specifier: // typedef types
1976 type_name
1977 | type_qualifier_list type_name
1978 { $$ = $2->addQualifiers( $1 ); }
1979 | type_type_specifier type_qualifier
1980 { $$ = $1->addQualifiers( $2 ); }
1981 ;
1982
1983type_name:
[4d51835]1984 TYPEDEFname
1985 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]1986 | '.' TYPEDEFname
[47498bd]1987 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]1988 | type_name '.' TYPEDEFname
[c5d7701]1989 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]1990 | typegen_name
1991 | '.' typegen_name
[47498bd]1992 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]1993 | type_name '.' typegen_name
[c5d7701]1994 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]1995 ;
1996
1997typegen_name: // CFA
[65d6de4]1998 TYPEGENname
1999 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2000 | TYPEGENname '(' ')'
[67cf18c]2001 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2002 | TYPEGENname '(' type_list ')'
[84d58c5]2003 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2004 ;
[51b73452]2005
[d0ffed1]2006elaborated_type: // struct, union, enum
[c0aa336]2007 aggregate_type
2008 | enum_type
[4d51835]2009 ;
[51b73452]2010
[d0ffed1]2011elaborated_type_nobody: // struct, union, enum - {...}
2012 aggregate_type_nobody
2013 | enum_type_nobody
2014 ;
2015
[3d56d15b]2016fred:
2017 // empty
2018 { yyy = false; }
2019 ;
2020
[d0ffed1]2021aggregate_type: // struct, union
[fc20514]2022 aggregate_key attribute_list_opt
2023 { forall = false; } // reset
2024 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2025 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[033ff37]2026 | aggregate_key attribute_list_opt identifier fred
[fdca7c6]2027 {
[26ef3b2]2028 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2029 forall = false; // reset
2030 }
[284da8c]2031 '{' field_declaration_list_opt '}' type_parameters_opt
2032 { $$ = DeclarationNode::newAggregate( $1, $3, $9, $7, true )->addQualifiers( $2 ); }
[3d56d15b]2033 | aggregate_key attribute_list_opt type_name fred
[407bde5]2034 {
[7de22b28]2035 // 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]2036 typedefTable.makeTypedef( *$3->type->leafName(), forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2037 forall = false; // reset
2038 }
[284da8c]2039 '{' field_declaration_list_opt '}' type_parameters_opt
2040 { $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $9, $7, true )->addQualifiers( $2 ); }
[d0ffed1]2041 | aggregate_type_nobody
2042 ;
2043
[284da8c]2044type_parameters_opt:
2045 // empty
2046 { $$ = nullptr; } %prec '}'
2047 | '(' type_list ')'
2048 { $$ = $2; }
2049 ;
2050
[d0ffed1]2051aggregate_type_nobody: // struct, union - {...}
[033ff37]2052 aggregate_key attribute_list_opt identifier fred
[84d58c5]2053 {
[26ef3b2]2054 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2055 forall = false; // reset
[84d58c5]2056 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2057 }
[3d56d15b]2058 | aggregate_key attribute_list_opt type_name fred
[65d6de4]2059 {
[fc20514]2060 forall = false; // reset
[65d6de4]2061 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2062 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2063 // delete newFromTypeGen.
2064 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2065 $3->type->symbolic.name = nullptr;
2066 $3->type->symbolic.actuals = nullptr;
2067 delete $3;
2068 }
[4d51835]2069 ;
[51b73452]2070
2071aggregate_key:
[e307e12]2072 aggregate_data
2073 | aggregate_control
2074 ;
2075
2076aggregate_data:
[c0aa336]2077 STRUCT
[312029a]2078 { yyy = true; $$ = AggregateDecl::Struct; }
[c0aa336]2079 | UNION
[312029a]2080 { yyy = true; $$ = AggregateDecl::Union; }
[e307e12]2081 | EXCEPTION // CFA
[25744d2]2082 // { yyy = true; $$ = AggregateDecl::Exception; }
2083 { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2084 ;
2085
2086aggregate_control: // CFA
[cbbd8fd7]2087 MONITOR
2088 { yyy = true; $$ = AggregateDecl::Monitor; }
2089 | MUTEX STRUCT
2090 { yyy = true; $$ = AggregateDecl::Monitor; }
2091 | GENERATOR
[427854b]2092 { yyy = true; $$ = AggregateDecl::Generator; }
[cbbd8fd7]2093 | MUTEX GENERATOR
[aeb5d0d]2094 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2095 | COROUTINE
[312029a]2096 { yyy = true; $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2097 | MUTEX COROUTINE
[aeb5d0d]2098 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2099 | THREAD
[312029a]2100 { yyy = true; $$ = AggregateDecl::Thread; }
[cbbd8fd7]2101 | MUTEX THREAD
[aeb5d0d]2102 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2103 ;
[51b73452]2104
[7fdb94e1]2105field_declaration_list_opt:
[5d125e4]2106 // empty
[58dd019]2107 { $$ = nullptr; }
[7fdb94e1]2108 | field_declaration_list_opt field_declaration
[a7741435]2109 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2110 ;
[51b73452]2111
2112field_declaration:
[679e644]2113 type_specifier field_declaring_list_opt ';'
[f7e4db27]2114 { $$ = fieldDecl( $1, $2 ); }
[679e644]2115 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2116 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2117 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2118 {
[dea36ee]2119 if ( ! $3 ) { // field declarator ?
2120 $3 = DeclarationNode::newName( nullptr );
2121 } // if
[679a260]2122 $3->inLine = true;
[679e644]2123 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2124 distInl( $3 );
[8f91c9ae]2125 }
[e307e12]2126 | INLINE aggregate_control ';' // CFA
2127 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2128 | typedef_declaration ';' // CFA
2129 | cfa_field_declaring_list ';' // CFA, new style field declaration
2130 | EXTENSION cfa_field_declaring_list ';' // GCC
2131 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2132 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2133 { $$ = $2; } // mark all fields in list
[46fa473]2134 | cfa_typedef_declaration ';' // CFA
[b47b827]2135 | static_assert // C11
[4d51835]2136 ;
[b87a5ed]2137
[679e644]2138field_declaring_list_opt:
2139 // empty
2140 { $$ = nullptr; }
2141 | field_declarator
2142 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2143 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2144 ;
[51b73452]2145
[679e644]2146field_declarator:
[e07caa2]2147 bit_subrange_size // C special case, no field name
[4d51835]2148 { $$ = DeclarationNode::newBitfield( $1 ); }
2149 | variable_declarator bit_subrange_size_opt
[679e644]2150 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2151 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2152 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2153 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2154 { $$ = $1->addBitfield( $2 ); }
[679e644]2155 ;
2156
[e07caa2]2157field_abstract_list_opt:
2158 // empty
[dea36ee]2159 { $$ = nullptr; }
[e07caa2]2160 | field_abstract
2161 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2162 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2163 ;
2164
[e07caa2]2165field_abstract:
[f7e4db27]2166 // no bit fields
[e07caa2]2167 variable_abstract_declarator
[679e644]2168 ;
2169
2170cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2171 // bit-fields are handled by C declarations
[033ff37]2172 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2173 { $$ = $1->addName( $2 ); }
[033ff37]2174 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2175 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2176 ;
2177
2178cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2179 // bit-fields are handled by C declarations
[679e644]2180 cfa_abstract_declarator_tuple
2181 | cfa_field_abstract_list ','
2182 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2183 ;
[51b73452]2184
2185bit_subrange_size_opt:
[4d51835]2186 // empty
[58dd019]2187 { $$ = nullptr; }
[4d51835]2188 | bit_subrange_size
2189 ;
[51b73452]2190
2191bit_subrange_size:
[c786e1d]2192 ':' assignment_expression
[4d51835]2193 { $$ = $2; }
2194 ;
[51b73452]2195
[408ab79]2196// Cannot use attribute_list_opt because of ambiguity with enum_specifier_nobody, which already parses attributes.
[d0ffed1]2197enum_type: // enum
[408ab79]2198 ENUM attribute_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2199 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[408ab79]2200 | ENUM attribute_opt identifier
[d0ffed1]2201 { typedefTable.makeTypedef( *$3 ); }
2202 '{' enumerator_list comma_opt '}'
2203 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[408ab79]2204 | ENUM attribute_opt typedef
[407bde5]2205 '{' enumerator_list comma_opt '}'
[408ab79]2206 { $$ = DeclarationNode::newEnum( $3->name, $5, true )->addQualifiers( $2 ); }
2207 | ENUM enum_specifier_nobody '{' enumerator_list comma_opt '}'
2208 // { $$ = DeclarationNode::newEnum( nullptr, $4, true ); }
2209 { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
2210 | ENUM enum_specifier_nobody declarator '{' enumerator_list comma_opt '}'
2211 // {
2212 // typedefTable.makeTypedef( *$3->name );
2213 // $$ = DeclarationNode::newEnum( nullptr, $5, true );
2214 // }
2215 { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
[d0ffed1]2216 | enum_type_nobody
2217 ;
2218
2219enum_type_nobody: // enum - {...}
[408ab79]2220 ENUM attribute_opt identifier
[45161b4d]2221 {
[c0aa336]2222 typedefTable.makeTypedef( *$3 );
[ca1a547]2223 $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 );
[45161b4d]2224 }
[408ab79]2225 | ENUM attribute_opt type_name
[407bde5]2226 {
2227 typedefTable.makeTypedef( *$3->type->symbolic.name );
2228 $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 );
2229 }
[4d51835]2230 ;
[51b73452]2231
2232enumerator_list:
[033ff37]2233 identifier_or_type_name enumerator_value_opt
[4d51835]2234 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[033ff37]2235 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[4d51835]2236 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
2237 ;
[51b73452]2238
2239enumerator_value_opt:
[4d51835]2240 // empty
[58dd019]2241 { $$ = nullptr; }
[408ab79]2242 // | '=' constant_expression
2243 // { $$ = $2; }
2244 | '=' initializer
2245 { $$ = $2->get_expression(); } // FIX ME: enum only deals with constant_expression
[4d51835]2246 ;
[51b73452]2247
[5a51798]2248cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2249 // empty
[2a8427c6]2250 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2251 | ELLIPSIS
[58dd019]2252 { $$ = nullptr; }
[2a8427c6]2253 | cfa_abstract_parameter_list
[c0aa336]2254 | cfa_parameter_list
[c0a33d2]2255 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2256 { $$ = $1->appendList( $5 ); }
2257 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2258 { $$ = $1->addVarArgs(); }
[c0a33d2]2259 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2260 { $$ = $1->addVarArgs(); }
2261 ;
[b87a5ed]2262
[c0aa336]2263cfa_parameter_list: // CFA
2264 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2265 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2266 cfa_parameter_declaration
[c0a33d2]2267 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2268 { $$ = $1->appendList( $5 ); }
2269 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2270 { $$ = $1->appendList( $5 ); }
2271 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2272 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2273 ;
[b87a5ed]2274
[c0aa336]2275cfa_abstract_parameter_list: // CFA, new & old style abstract
2276 cfa_abstract_parameter_declaration
[c0a33d2]2277 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2278 { $$ = $1->appendList( $5 ); }
[4d51835]2279 ;
[51b73452]2280
2281parameter_type_list_opt:
[4d51835]2282 // empty
[58dd019]2283 { $$ = nullptr; }
[2a8427c6]2284 | ELLIPSIS
2285 { $$ = nullptr; }
2286 | parameter_list
[4d51835]2287 | parameter_list pop ',' push ELLIPSIS
2288 { $$ = $1->addVarArgs(); }
2289 ;
[b87a5ed]2290
2291parameter_list: // abstract + real
[4d51835]2292 abstract_parameter_declaration
2293 | parameter_declaration
2294 | parameter_list pop ',' push abstract_parameter_declaration
2295 { $$ = $1->appendList( $5 ); }
2296 | parameter_list pop ',' push parameter_declaration
2297 { $$ = $1->appendList( $5 ); }
2298 ;
[51b73452]2299
[de62360d]2300// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2301// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2302
[c0aa336]2303cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2304 parameter_declaration
[5a51798]2305 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2306 { $$ = $1->addName( $2 ); }
[5a51798]2307 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2308 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2309 { $$ = $1->addName( $2 ); }
[5a51798]2310 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2311 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2312 | cfa_function_specifier
[4d51835]2313 ;
[b87a5ed]2314
[c0aa336]2315cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2316 abstract_parameter_declaration
[c0aa336]2317 | cfa_identifier_parameter_declarator_no_tuple
2318 | cfa_abstract_tuple
2319 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2320 | type_qualifier_list cfa_abstract_tuple
[4d51835]2321 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2322 | cfa_abstract_function
[4d51835]2323 ;
[51b73452]2324
2325parameter_declaration:
[d0ffed1]2326 // No SUE declaration in parameter list.
[5a51798]2327 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2328 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2329 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2330 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2331 ;
[51b73452]2332
2333abstract_parameter_declaration:
[5a51798]2334 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2335 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2336 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2337 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2338 ;
[51b73452]2339
[c11e31c]2340// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2341// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2342// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2343
[b87a5ed]2344identifier_list: // K&R-style parameter list => no types
[033ff37]2345 identifier
[4d51835]2346 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2347 | identifier_list ',' identifier
[4d51835]2348 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2349 ;
[51b73452]2350
[2871210]2351identifier_or_type_name:
[4d51835]2352 identifier
2353 | TYPEDEFname
2354 | TYPEGENname
2355 ;
[51b73452]2356
[84d58c5]2357type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2358 cfa_abstract_declarator_tuple // CFA
[4d51835]2359 | type_specifier
[c0aa336]2360 | type_specifier abstract_declarator
[4d51835]2361 { $$ = $2->addType( $1 ); }
2362 ;
[b87a5ed]2363
[84d58c5]2364type: // typeof, assertion
2365 type_no_function
[c0aa336]2366 | cfa_abstract_function // CFA
[4d51835]2367 ;
[51b73452]2368
2369initializer_opt:
[4d51835]2370 // empty
[58dd019]2371 { $$ = nullptr; }
[2871210]2372 | '=' initializer
2373 { $$ = $2; }
[641c3d0]2374 | '=' VOID
[3ed994e]2375 { $$ = new InitializerNode( true ); }
[097e2b0]2376 | ATassign initializer
[974906e2]2377 { $$ = $2->set_maybeConstructed( false ); }
[4d51835]2378 ;
[51b73452]2379
2380initializer:
[de62360d]2381 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2382 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2383 ;
[51b73452]2384
[7fdb94e1]2385initializer_list_opt:
[097e2b0]2386 // empty
[58dd019]2387 { $$ = nullptr; }
[097e2b0]2388 | initializer
[4d51835]2389 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2390 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2391 | initializer_list_opt ',' designation initializer
[4a063df]2392 { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2393 ;
[b87a5ed]2394
[de62360d]2395// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2396// '=' to separator the designator from the initializer value, as in:
[c11e31c]2397//
[b87a5ed]2398// int x[10] = { [1] = 3 };
[c11e31c]2399//
[de62360d]2400// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2401// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2402// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2403// shift/reduce conflicts
[51b73452]2404
2405designation:
[4d51835]2406 designator_list ':' // C99, CFA uses ":" instead of "="
[033ff37]2407 | identifier ':' // GCC, field name
[d1625f8]2408 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2409 ;
[51b73452]2410
[b87a5ed]2411designator_list: // C99
[4d51835]2412 designator
[2871210]2413 | designator_list designator
[4a063df]2414 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2415 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2416 ;
[51b73452]2417
2418designator:
[033ff37]2419 '.' identifier // C99, field name
[d1625f8]2420 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2421 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2422 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2423 { $$ = $3; }
[c0a33d2]2424 | '[' push subrange pop ']' // CFA, multiple array elements
2425 { $$ = $3; }
2426 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2427 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2428 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2429 { $$ = $4; }
[4d51835]2430 ;
[51b73452]2431
[de62360d]2432// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2433// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2434//
2435// Overloading: function, data, and operator identifiers may be overloaded.
2436//
[3ca7ef3]2437// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2438// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2439// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2440//
[de62360d]2441// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2442// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2443//
2444// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2445// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2446// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2447// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2448// on type arguments of polymorphic functions.
[c11e31c]2449
[b87a5ed]2450type_parameter_list: // CFA
[67cf18c]2451 type_parameter
2452 | type_parameter_list ',' type_parameter
[4d51835]2453 { $$ = $1->appendList( $3 ); }
2454 ;
[b87a5ed]2455
[84d58c5]2456type_initializer_opt: // CFA
2457 // empty
2458 { $$ = nullptr; }
2459 | '=' type
2460 { $$ = $2; }
2461 ;
2462
[b87a5ed]2463type_parameter: // CFA
[033ff37]2464 type_class identifier_or_type_name
[408ab79]2465 {
2466 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[fd54fef]2467 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated" ); }
2468 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated" ); }
2469 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated" ); }
2470 }
[5a51798]2471 type_initializer_opt assertion_list_opt
[67cf18c]2472 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2473 | identifier_or_type_name new_type_class
2474 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2475 type_initializer_opt assertion_list_opt
2476 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2477 | '[' identifier_or_type_name ']'
[b66d14a]2478 {
2479 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
2480 $$ = DeclarationNode::newTypeParam( TypeDecl::ALtype, $2 );
2481 }
[5a51798]2482 // | type_specifier identifier_parameter_declarator
[9997fee]2483 | assertion_list
[07de76b]2484 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2485 ;
[b87a5ed]2486
[5a51798]2487new_type_class: // CFA
2488 // empty
2489 { $$ = TypeDecl::Otype; }
2490 | '&'
2491 { $$ = TypeDecl::Dtype; }
2492 | '*'
[b66d14a]2493 { $$ = TypeDecl::DStype; } // dtype + sized
[5a51798]2494 | ELLIPSIS
2495 { $$ = TypeDecl::Ttype; }
2496 ;
2497
[b87a5ed]2498type_class: // CFA
[4040425]2499 OTYPE
[07de76b]2500 { $$ = TypeDecl::Otype; }
[4d51835]2501 | DTYPE
[07de76b]2502 { $$ = TypeDecl::Dtype; }
[8f60f0b]2503 | FTYPE
[07de76b]2504 { $$ = TypeDecl::Ftype; }
[8f60f0b]2505 | TTYPE
[07de76b]2506 { $$ = TypeDecl::Ttype; }
[4d51835]2507 ;
[b87a5ed]2508
2509assertion_list_opt: // CFA
[4d51835]2510 // empty
[58dd019]2511 { $$ = nullptr; }
[9997fee]2512 | assertion_list
2513 ;
2514
2515assertion_list: // CFA
2516 assertion
2517 | assertion_list assertion
[3ca7ef3]2518 { $$ = $1->appendList( $2 ); }
[4d51835]2519 ;
[b87a5ed]2520
2521assertion: // CFA
[033ff37]2522 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2523 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2524 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2525 { $$ = $4; }
[35718a9]2526 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2527 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2528 ;
[b87a5ed]2529
[84d58c5]2530type_list: // CFA
2531 type
[513e165]2532 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2533 | assignment_expression
[3007c0b]2534 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $1->build()) ); $$ = nullptr; }
[84d58c5]2535 | type_list ',' type
[4a063df]2536 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2537 | type_list ',' assignment_expression
[3007c0b]2538 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $3->build()) ); $$ = nullptr; }
2539 // { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2540 ;
[b87a5ed]2541
2542type_declaring_list: // CFA
[4040425]2543 OTYPE type_declarator
[4d51835]2544 { $$ = $2; }
[4040425]2545 | storage_class_list OTYPE type_declarator
[4d51835]2546 { $$ = $3->addQualifiers( $1 ); }
2547 | type_declaring_list ',' type_declarator
[a7c90d4]2548 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2549 ;
[b87a5ed]2550
2551type_declarator: // CFA
[4d51835]2552 type_declarator_name assertion_list_opt
2553 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2554 | type_declarator_name assertion_list_opt '=' type
[4d51835]2555 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2556 ;
[b87a5ed]2557
2558type_declarator_name: // CFA
[033ff37]2559 identifier_or_type_name
[4d51835]2560 {
[ecae5860]2561 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2562 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2563 }
[033ff37]2564 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2565 {
[ecae5860]2566 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2567 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2568 }
2569 ;
[b87a5ed]2570
[4040425]2571trait_specifier: // CFA
[033ff37]2572 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2573 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2574 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2575 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2576 ;
[b87a5ed]2577
[84d58c5]2578trait_declaration_list: // CFA
[4040425]2579 trait_declaration
[13e8427]2580 | trait_declaration_list pop push trait_declaration
2581 { $$ = $1->appendList( $4 ); }
[4d51835]2582 ;
[b87a5ed]2583
[84d58c5]2584trait_declaration: // CFA
[13e8427]2585 cfa_trait_declaring_list ';'
2586 | trait_declaring_list ';'
[4d51835]2587 ;
[b87a5ed]2588
[c0aa336]2589cfa_trait_declaring_list: // CFA
2590 cfa_variable_specifier
2591 | cfa_function_specifier
2592 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2593 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2594 ;
[b87a5ed]2595
[4040425]2596trait_declaring_list: // CFA
[4d51835]2597 type_specifier declarator
[7fdb94e1]2598 { $$ = $2->addType( $1 ); }
[4040425]2599 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2600 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2601 ;
[51b73452]2602
[c11e31c]2603//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2604
2605translation_unit:
[3d56d15b]2606 // empty, input file
[4d51835]2607 | external_definition_list
[a7741435]2608 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2609 ;
[51b73452]2610
2611external_definition_list:
[35718a9]2612 push external_definition pop
2613 { $$ = $2; }
[fc20514]2614 | external_definition_list push external_definition pop
2615 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2616 ;
[51b73452]2617
2618external_definition_list_opt:
[4d51835]2619 // empty
[58dd019]2620 { $$ = nullptr; }
[3d56d15b]2621 | external_definition_list
2622 ;
2623
2624up:
[fc20514]2625 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2626 ;
2627
2628down:
2629 { typedefTable.down(); }
[4d51835]2630 ;
[51b73452]2631
2632external_definition:
[4d51835]2633 declaration
2634 | external_function_definition
[ecae5860]2635 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2636 {
2637 distExt( $2 ); // mark all fields in list
2638 $$ = $2;
2639 }
[e994912]2640 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
2641 {
[6d539f83]2642 $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) );
[e994912]2643 }
[c0aa336]2644 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2645 {
[3b8e52c]2646 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2647 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2648 }
[3d56d15b]2649 '{' up external_definition_list_opt down '}'
[4d51835]2650 {
2651 linkage = linkageStack.top();
2652 linkageStack.pop();
[3d56d15b]2653 $$ = $6;
[8e9cbb2]2654 }
[9997fee]2655 | type_qualifier_list
2656 {
[3d56d15b]2657 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2658 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2659 }
2660 '{' up external_definition_list_opt down '}' // CFA, namespace
2661 {
[4c3ee8d]2662 distQual( $5, $1 );
[fc20514]2663 forall = false;
[3d56d15b]2664 $$ = $5;
[9997fee]2665 }
2666 | declaration_qualifier_list
2667 {
[4c3ee8d]2668 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2669 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2670 }
2671 '{' up external_definition_list_opt down '}' // CFA, namespace
2672 {
[4c3ee8d]2673 distQual( $5, $1 );
[fc20514]2674 forall = false;
[3d56d15b]2675 $$ = $5;
[9997fee]2676 }
2677 | declaration_qualifier_list type_qualifier_list
2678 {
[3d56d15b]2679 if ( ($1->type && $1->type->qualifiers.val) || $2->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2680 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2681 }
[3d56d15b]2682 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2683 {
[284da8c]2684 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2685 forall = false;
[3d56d15b]2686 $$ = $6;
[9997fee]2687 }
[4d51835]2688 ;
2689
2690external_function_definition:
2691 function_definition
[de62360d]2692 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2693 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2694 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2695 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2696 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2697 | function_declarator compound_statement
[c0a33d2]2698 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2699 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2700 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2701 ;
[51b73452]2702
[8b47e50]2703with_clause_opt:
2704 // empty
[9997fee]2705 { $$ = nullptr; forall = false; }
[578e6037]2706 | WITH '(' tuple_expression_list ')'
[9997fee]2707 { $$ = $3; forall = false; }
[8b47e50]2708 ;
2709
[51b73452]2710function_definition:
[8b47e50]2711 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2712 {
[481115f]2713 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2714 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2715 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2716 $$ = $1;
[4d51835]2717 }
[8b47e50]2718 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2719 {
[c38ae92]2720 rebindForall( $1, $2 );
[7fdb94e1]2721 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2722 }
2723 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2724 {
2725 rebindForall( $1, $2 );
[5fcba14]2726 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2727 }
[a16a7ec]2728 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2729 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2730 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2731 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2732 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2733 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2734 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2735 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2736 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2737
2738 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2739 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2740 {
[c38ae92]2741 rebindForall( $1, $2 );
[5fcba14]2742 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2743 }
[a16a7ec]2744 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2745 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2746 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2747 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2748 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2749 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2750 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2751 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2752 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2753 ;
[51b73452]2754
2755declarator:
[4d51835]2756 variable_declarator
[c6b1105]2757 | variable_type_redeclarator
[4d51835]2758 | function_declarator
2759 ;
[51b73452]2760
2761subrange:
[4d51835]2762 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]2763 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]2764 ;
[b87a5ed]2765
2766asm_name_opt: // GCC
[4d51835]2767 // empty
[58dd019]2768 { $$ = nullptr; }
2769 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2770 {
2771 DeclarationNode * name = new DeclarationNode();
2772 name->asmName = $3;
2773 $$ = name->addQualifiers( $5 );
2774 }
[4d51835]2775 ;
[b87a5ed]2776
2777attribute_list_opt: // GCC
[4d51835]2778 // empty
[58dd019]2779 { $$ = nullptr; }
[4d51835]2780 | attribute_list
2781 ;
[b87a5ed]2782
2783attribute_list: // GCC
[4d51835]2784 attribute
2785 | attribute_list attribute
[1db21619]2786 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2787 ;
[b87a5ed]2788
[408ab79]2789attribute_opt:
2790 // empty
2791 { $$ = nullptr; }
2792 | attribute
2793 ;
2794
[b87a5ed]2795attribute: // GCC
[44a81853]2796 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2797 { $$ = $4; }
[4d51835]2798 ;
[b87a5ed]2799
[44a81853]2800attribute_name_list: // GCC
2801 attribute_name
2802 | attribute_name_list ',' attribute_name
[c0aa336]2803 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2804 ;
[b87a5ed]2805
[44a81853]2806attribute_name: // GCC
[4d51835]2807 // empty
[44a81853]2808 { $$ = nullptr; }
2809 | attr_name
2810 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]2811 | attr_name '(' argument_expression_list_opt ')'
[44a81853]2812 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2813 ;
[b87a5ed]2814
[44a81853]2815attr_name: // GCC
2816 IDENTIFIER
[5b2edbc]2817 | quasi_keyword
[44a81853]2818 | TYPEDEFname
2819 | TYPEGENname
[114014c]2820 | FALLTHROUGH
2821 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2822 | CONST
[9ff56e7]2823 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2824 ;
[51b73452]2825
[c11e31c]2826// ============================================================================
[de62360d]2827// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2828// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2829// in:
[c11e31c]2830//
[b87a5ed]2831// int (*f())[10] { ... };
2832// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2833//
[de62360d]2834// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2835// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2836// ============================================================================
2837
2838// ----------------------------------------------------------------------------
[de62360d]2839// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2840// to define a variable or function prototype, e.g.:
[c11e31c]2841//
[b87a5ed]2842// valid declaration invalid definition
2843// ----------------- ------------------
[4d51835]2844// int f; int f {}
2845// int *f; int *f {}
[b87a5ed]2846// int f[10]; int f[10] {}
[4d51835]2847// int (*f)(int); int (*f)(int) {}
[c11e31c]2848//
[de62360d]2849// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2850// variable_declarator and function_declarator.
[c11e31c]2851// ----------------------------------------------------------------------------
2852
[de62360d]2853// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2854// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2855
2856variable_declarator:
[4d51835]2857 paren_identifier attribute_list_opt
[1db21619]2858 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2859 | variable_ptr
2860 | variable_array attribute_list_opt
[1db21619]2861 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2862 | variable_function attribute_list_opt
[1db21619]2863 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2864 ;
[51b73452]2865
2866paren_identifier:
[4d51835]2867 identifier
[7fdb94e1]2868 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2869 | '(' paren_identifier ')' // redundant parenthesis
2870 { $$ = $2; }
2871 ;
[51b73452]2872
2873variable_ptr:
[dd51906]2874 ptrref_operator variable_declarator
[ce8c12f]2875 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2876 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2877 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2878 | '(' variable_ptr ')' attribute_list_opt
2879 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2880 ;
[51b73452]2881
2882variable_array:
[4d51835]2883 paren_identifier array_dimension
2884 { $$ = $1->addArray( $2 ); }
2885 | '(' variable_ptr ')' array_dimension
2886 { $$ = $2->addArray( $4 ); }
2887 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
2888 { $$ = $2->addArray( $4 ); }
2889 | '(' variable_array ')' // redundant parenthesis
2890 { $$ = $2; }
2891 ;
[51b73452]2892
2893variable_function:
[4d51835]2894 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2895 { $$ = $2->addParamList( $6 ); }
2896 | '(' variable_function ')' // redundant parenthesis
2897 { $$ = $2; }
2898 ;
[51b73452]2899
[c6b1105]2900// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2901// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2902// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2903
2904function_declarator:
[4d51835]2905 function_no_ptr attribute_list_opt
[1db21619]2906 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2907 | function_ptr
2908 | function_array attribute_list_opt
[1db21619]2909 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2910 ;
[51b73452]2911
2912function_no_ptr:
[4d51835]2913 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2914 { $$ = $1->addParamList( $4 ); }
2915 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2916 { $$ = $2->addParamList( $6 ); }
2917 | '(' function_no_ptr ')' // redundant parenthesis
2918 { $$ = $2; }
2919 ;
[51b73452]2920
2921function_ptr:
[dd51906]2922 ptrref_operator function_declarator
[ce8c12f]2923 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2924 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]2925 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[4d51835]2926 | '(' function_ptr ')'
2927 { $$ = $2; }
2928 ;
[51b73452]2929
2930function_array:
[4d51835]2931 '(' function_ptr ')' array_dimension
2932 { $$ = $2->addArray( $4 ); }
2933 | '(' function_array ')' multi_array_dimension // redundant parenthesis
2934 { $$ = $2->addArray( $4 ); }
2935 | '(' function_array ')' // redundant parenthesis
2936 { $$ = $2; }
2937 ;
[51b73452]2938
[c0aa336]2939// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2940//
2941// f( a, b, c ) int a, *b, c[]; {}
2942//
2943// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2944// returning arrays and functions versus pointers to arrays and functions.
[51b73452]2945
[c0aa336]2946KR_function_declarator:
2947 KR_function_no_ptr
2948 | KR_function_ptr
2949 | KR_function_array
[4d51835]2950 ;
[51b73452]2951
[c0aa336]2952KR_function_no_ptr:
[4d51835]2953 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2954 { $$ = $1->addIdList( $3 ); }
[c0a33d2]2955 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2956 { $$ = $2->addParamList( $6 ); }
[c0aa336]2957 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]2958 { $$ = $2; }
2959 ;
[51b73452]2960
[c0aa336]2961KR_function_ptr:
2962 ptrref_operator KR_function_declarator
[ce8c12f]2963 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]2964 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]2965 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2966 | '(' KR_function_ptr ')'
[4d51835]2967 { $$ = $2; }
2968 ;
[51b73452]2969
[c0aa336]2970KR_function_array:
2971 '(' KR_function_ptr ')' array_dimension
[4d51835]2972 { $$ = $2->addArray( $4 ); }
[c0aa336]2973 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2974 { $$ = $2->addArray( $4 ); }
[c0aa336]2975 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]2976 { $$ = $2; }
2977 ;
[51b73452]2978
[2871210]2979// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]2980//
[b87a5ed]2981// typedef int foo;
2982// {
2983// int foo; // redefine typedef name in new scope
2984// }
[c11e31c]2985//
[de62360d]2986// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2987// and functions versus pointers to arrays and functions.
[51b73452]2988
[c6b1105]2989variable_type_redeclarator:
[2871210]2990 paren_type attribute_list_opt
[1db21619]2991 { $$ = $1->addQualifiers( $2 ); }
[2871210]2992 | type_ptr
2993 | type_array attribute_list_opt
[1db21619]2994 { $$ = $1->addQualifiers( $2 ); }
[2871210]2995 | type_function attribute_list_opt
[1db21619]2996 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2997 ;
[51b73452]2998
[2871210]2999paren_type:
3000 typedef
[2f0a0678]3001 // hide type name in enclosing scope by variable name
[c4f68dc]3002 {
3003 // if ( ! typedefTable.existsCurr( *$1->name ) ) {
3004 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
3005 // } else {
3006 // SemanticError( yylloc, string("'") + *$1->name + "' redeclared as different kind of symbol." ); $$ = nullptr;
3007 // } // if
3008 }
[2871210]3009 | '(' paren_type ')'
[4d51835]3010 { $$ = $2; }
3011 ;
[51b73452]3012
[2871210]3013type_ptr:
[c6b1105]3014 ptrref_operator variable_type_redeclarator
[ce8c12f]3015 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3016 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3017 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3018 | '(' type_ptr ')' attribute_list_opt
[c4f68dc]3019 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]3020 ;
[51b73452]3021
[2871210]3022type_array:
3023 paren_type array_dimension
[4d51835]3024 { $$ = $1->addArray( $2 ); }
[2871210]3025 | '(' type_ptr ')' array_dimension
[4d51835]3026 { $$ = $2->addArray( $4 ); }
[2871210]3027 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3028 { $$ = $2->addArray( $4 ); }
[2871210]3029 | '(' type_array ')' // redundant parenthesis
[4d51835]3030 { $$ = $2; }
3031 ;
[51b73452]3032
[2871210]3033type_function:
3034 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3035 { $$ = $1->addParamList( $4 ); }
[2871210]3036 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3037 { $$ = $2->addParamList( $6 ); }
[2871210]3038 | '(' type_function ')' // redundant parenthesis
[4d51835]3039 { $$ = $2; }
3040 ;
[51b73452]3041
[c0aa336]3042// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3043// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3044// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3045// pointers to arrays and functions.
[51b73452]3046
3047identifier_parameter_declarator:
[4d51835]3048 paren_identifier attribute_list_opt
[1db21619]3049 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3050 | '&' MUTEX paren_identifier attribute_list_opt
3051 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3052 | identifier_parameter_ptr
3053 | identifier_parameter_array attribute_list_opt
[1db21619]3054 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3055 | identifier_parameter_function attribute_list_opt
[1db21619]3056 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3057 ;
[51b73452]3058
3059identifier_parameter_ptr:
[dd51906]3060 ptrref_operator identifier_parameter_declarator
[ce8c12f]3061 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3062 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3063 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3064 | '(' identifier_parameter_ptr ')' attribute_list_opt
3065 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3066 ;
[51b73452]3067
3068identifier_parameter_array:
[4d51835]3069 paren_identifier array_parameter_dimension
3070 { $$ = $1->addArray( $2 ); }
3071 | '(' identifier_parameter_ptr ')' array_dimension
3072 { $$ = $2->addArray( $4 ); }
3073 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3074 { $$ = $2->addArray( $4 ); }
3075 | '(' identifier_parameter_array ')' // redundant parenthesis
3076 { $$ = $2; }
3077 ;
[51b73452]3078
3079identifier_parameter_function:
[c0a33d2]3080 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3081 { $$ = $1->addParamList( $4 ); }
3082 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3083 { $$ = $2->addParamList( $6 ); }
[4d51835]3084 | '(' identifier_parameter_function ')' // redundant parenthesis
3085 { $$ = $2; }
3086 ;
[b87a5ed]3087
[de62360d]3088// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3089// e.g.:
[c11e31c]3090//
[b87a5ed]3091// typedef int foo;
[114014c]3092// forall( otype T ) struct foo;
[b87a5ed]3093// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3094//
[c0aa336]3095// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3096
[2871210]3097type_parameter_redeclarator:
[4d51835]3098 typedef attribute_list_opt
[1db21619]3099 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3100 | '&' MUTEX typedef attribute_list_opt
3101 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3102 | type_parameter_ptr
3103 | type_parameter_array attribute_list_opt
[1db21619]3104 { $$ = $1->addQualifiers( $2 ); }
[2871210]3105 | type_parameter_function attribute_list_opt
[1db21619]3106 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3107 ;
[51b73452]3108
3109typedef:
[4d51835]3110 TYPEDEFname
[7fdb94e1]3111 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3112 | TYPEGENname
[7fdb94e1]3113 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3114 ;
[51b73452]3115
[2871210]3116type_parameter_ptr:
[dd51906]3117 ptrref_operator type_parameter_redeclarator
[ce8c12f]3118 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3119 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3120 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3121 | '(' type_parameter_ptr ')' attribute_list_opt
3122 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3123 ;
[51b73452]3124
[2871210]3125type_parameter_array:
[4d51835]3126 typedef array_parameter_dimension
3127 { $$ = $1->addArray( $2 ); }
[2871210]3128 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3129 { $$ = $2->addArray( $4 ); }
3130 ;
[51b73452]3131
[2871210]3132type_parameter_function:
[c0a33d2]3133 typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3134 { $$ = $1->addParamList( $4 ); }
3135 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3136 { $$ = $2->addParamList( $6 ); }
[4d51835]3137 ;
[b87a5ed]3138
[de62360d]3139// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3140// which the type applies, e.g.:
[c11e31c]3141//
[b87a5ed]3142// sizeof( int );
[c0aa336]3143// sizeof( int * );
[b87a5ed]3144// sizeof( int [10] );
[c0aa336]3145// sizeof( int (*)() );
3146// sizeof( int () );
[c11e31c]3147//
[de62360d]3148// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3149// and functions versus pointers to arrays and functions.
[51b73452]3150
3151abstract_declarator:
[4d51835]3152 abstract_ptr
3153 | abstract_array attribute_list_opt
[1db21619]3154 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3155 | abstract_function attribute_list_opt
[1db21619]3156 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3157 ;
[51b73452]3158
3159abstract_ptr:
[dd51906]3160 ptrref_operator
[ce8c12f]3161 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3162 | ptrref_operator type_qualifier_list
[ce8c12f]3163 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3164 | ptrref_operator abstract_declarator
[ce8c12f]3165 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3166 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3167 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3168 | '(' abstract_ptr ')' attribute_list_opt
3169 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3170 ;
[51b73452]3171
3172abstract_array:
[4d51835]3173 array_dimension
3174 | '(' abstract_ptr ')' array_dimension
3175 { $$ = $2->addArray( $4 ); }
3176 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3177 { $$ = $2->addArray( $4 ); }
3178 | '(' abstract_array ')' // redundant parenthesis
3179 { $$ = $2; }
3180 ;
[51b73452]3181
3182abstract_function:
[c0a33d2]3183 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3184 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3185 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3186 { $$ = $2->addParamList( $6 ); }
[4d51835]3187 | '(' abstract_function ')' // redundant parenthesis
3188 { $$ = $2; }
3189 ;
[51b73452]3190
3191array_dimension:
[4d51835]3192 // Only the first dimension can be empty.
[2871210]3193 '[' ']'
[4d51835]3194 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3195 | '[' ']' multi_array_dimension
3196 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[4d51835]3197 | multi_array_dimension
3198 ;
[51b73452]3199
3200multi_array_dimension:
[c0a33d2]3201 '[' push assignment_expression pop ']'
3202 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3203 | '[' push '*' pop ']' // C99
[4d51835]3204 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3205 | multi_array_dimension '[' push assignment_expression pop ']'
3206 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3207 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3208 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3209 ;
[51b73452]3210
[c11e31c]3211// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3212// identifier to which the type applies, e.g.:
3213//
[c0aa336]3214// int f( int ); // not handled here
3215// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3216// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3217// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3218//
[de62360d]3219// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3220// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3221// special meaning of parenthesis around a typedef name:
3222//
3223// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3224// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3225// not as redundant parentheses around the identifier."
3226//
3227// For example:
3228//
3229// typedef float T;
3230// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3231// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3232// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3233// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3234//
3235// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3236// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3237// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3238// functions.
[51b73452]3239
3240abstract_parameter_declarator:
[4d51835]3241 abstract_parameter_ptr
[b6b3c42]3242 | '&' MUTEX attribute_list_opt
3243 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3244 | abstract_parameter_array attribute_list_opt
[1db21619]3245 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3246 | abstract_parameter_function attribute_list_opt
[1db21619]3247 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3248 ;
[51b73452]3249
3250abstract_parameter_ptr:
[dd51906]3251 ptrref_operator
[ce8c12f]3252 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3253 | ptrref_operator type_qualifier_list
[ce8c12f]3254 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3255 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3256 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3257 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3258 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3259 | '(' abstract_parameter_ptr ')' attribute_list_opt
3260 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3261 ;
[51b73452]3262
3263abstract_parameter_array:
[4d51835]3264 array_parameter_dimension
3265 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3266 { $$ = $2->addArray( $4 ); }
3267 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3268 { $$ = $2->addArray( $4 ); }
3269 | '(' abstract_parameter_array ')' // redundant parenthesis
3270 { $$ = $2; }
3271 ;
[51b73452]3272
3273abstract_parameter_function:
[c0a33d2]3274 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3275 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3276 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3277 { $$ = $2->addParamList( $6 ); }
[4d51835]3278 | '(' abstract_parameter_function ')' // redundant parenthesis
3279 { $$ = $2; }
3280 ;
[51b73452]3281
3282array_parameter_dimension:
[4d51835]3283 // Only the first dimension can be empty or have qualifiers.
3284 array_parameter_1st_dimension
3285 | array_parameter_1st_dimension multi_array_dimension
3286 { $$ = $1->addArray( $2 ); }
3287 | multi_array_dimension
3288 ;
[51b73452]3289
[c11e31c]3290// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3291//
[de62360d]3292// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3293// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3294
3295array_parameter_1st_dimension:
[2871210]3296 '[' ']'
[4d51835]3297 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3298 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3299 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3300 { $$ = DeclarationNode::newVarArray( $3 ); }
3301 | '[' push type_qualifier_list pop ']'
3302 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3303 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3304 | '[' push type_qualifier_list assignment_expression pop ']'
3305 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3306 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3307 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3308 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3309 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3310 ;
[b87a5ed]3311
[c0aa336]3312// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3313//
[c0aa336]3314// struct S {
3315// int;
3316// int *;
3317// int [10];
3318// int (*)();
3319// };
[51b73452]3320
3321variable_abstract_declarator:
[4d51835]3322 variable_abstract_ptr
3323 | variable_abstract_array attribute_list_opt
[1db21619]3324 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3325 | variable_abstract_function attribute_list_opt
[1db21619]3326 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3327 ;
[51b73452]3328
3329variable_abstract_ptr:
[dd51906]3330 ptrref_operator
[ce8c12f]3331 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3332 | ptrref_operator type_qualifier_list
[ce8c12f]3333 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3334 | ptrref_operator variable_abstract_declarator
[ce8c12f]3335 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3336 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3337 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3338 | '(' variable_abstract_ptr ')' attribute_list_opt
3339 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3340 ;
[51b73452]3341
3342variable_abstract_array:
[4d51835]3343 array_dimension
3344 | '(' variable_abstract_ptr ')' array_dimension
3345 { $$ = $2->addArray( $4 ); }
3346 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3347 { $$ = $2->addArray( $4 ); }
3348 | '(' variable_abstract_array ')' // redundant parenthesis
3349 { $$ = $2; }
3350 ;
[51b73452]3351
3352variable_abstract_function:
[c0a33d2]3353 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3354 { $$ = $2->addParamList( $6 ); }
[4d51835]3355 | '(' variable_abstract_function ')' // redundant parenthesis
3356 { $$ = $2; }
3357 ;
[b87a5ed]3358
[de62360d]3359// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3360// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3361
[c0aa336]3362cfa_identifier_parameter_declarator_tuple: // CFA
3363 cfa_identifier_parameter_declarator_no_tuple
3364 | cfa_abstract_tuple
3365 | type_qualifier_list cfa_abstract_tuple
[4d51835]3366 { $$ = $2->addQualifiers( $1 ); }
3367 ;
[b87a5ed]3368
[c0aa336]3369cfa_identifier_parameter_declarator_no_tuple: // CFA
3370 cfa_identifier_parameter_ptr
3371 | cfa_identifier_parameter_array
[4d51835]3372 ;
[b87a5ed]3373
[c0aa336]3374cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3375 // No SUE declaration in parameter list.
3376 ptrref_operator type_specifier_nobody
[ce8c12f]3377 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3378 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3379 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3380 | ptrref_operator cfa_abstract_function
[ce8c12f]3381 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3382 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3383 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3384 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3385 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3386 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3387 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3388 ;
[b87a5ed]3389
[c0aa336]3390cfa_identifier_parameter_array: // CFA
[de62360d]3391 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3392 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3393 '[' ']' type_specifier_nobody
[2871210]3394 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3395 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3396 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3397 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3398 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3399 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3400 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3401 | multi_array_dimension type_specifier_nobody
[4d51835]3402 { $$ = $2->addNewArray( $1 ); }
[9059213]3403
[c0aa336]3404 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3405 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3406 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3407 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3408 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3409 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3410 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3411 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3412 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3413 { $$ = $2->addNewArray( $1 ); }
3414 ;
[51b73452]3415
[c0aa336]3416cfa_array_parameter_1st_dimension:
[c0a33d2]3417 '[' push type_qualifier_list '*' pop ']' // remaining C99
3418 { $$ = DeclarationNode::newVarArray( $3 ); }
3419 | '[' push type_qualifier_list assignment_expression pop ']'
3420 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3421 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3422 // declaration_qualifier_list must be used because of shift/reduce conflict with
3423 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3424 // appear in this context.
[c0a33d2]3425 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3426 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3427 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3428 ;
[b87a5ed]3429
[de62360d]3430// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3431// identifier to which the type applies, e.g.:
[c11e31c]3432//
[b87a5ed]3433// [int] f( int ); // abstract variable parameter; no parameter name specified
3434// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3435//
3436// These rules need LR(3):
3437//
[c0aa336]3438// cfa_abstract_tuple identifier_or_type_name
[40de461]3439// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3440//
3441// since a function return type can be syntactically identical to a tuple type:
3442//
[b87a5ed]3443// [int, int] t;
3444// [int, int] f( int );
[c11e31c]3445//
[2871210]3446// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3447// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3448// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3449// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3450
[c0aa336]3451cfa_abstract_declarator_tuple: // CFA
3452 cfa_abstract_tuple
3453 | type_qualifier_list cfa_abstract_tuple
[4d51835]3454 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3455 | cfa_abstract_declarator_no_tuple
[4d51835]3456 ;
[b87a5ed]3457
[c0aa336]3458cfa_abstract_declarator_no_tuple: // CFA
3459 cfa_abstract_ptr
3460 | cfa_abstract_array
[4d51835]3461 ;
[b87a5ed]3462
[c0aa336]3463cfa_abstract_ptr: // CFA
[dd51906]3464 ptrref_operator type_specifier
[ce8c12f]3465 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3466 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3467 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3468 | ptrref_operator cfa_abstract_function
[ce8c12f]3469 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3470 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3471 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3472 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3473 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3474 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3475 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3476 ;
[b87a5ed]3477
[c0aa336]3478cfa_abstract_array: // CFA
[de62360d]3479 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3480 // empty (void) function return type.
[2871210]3481 '[' ']' type_specifier
[2298f728]3482 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3483 | '[' ']' multi_array_dimension type_specifier
[2298f728]3484 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3485 | multi_array_dimension type_specifier
3486 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3487 | '[' ']' cfa_abstract_ptr
[2298f728]3488 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3489 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3490 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3491 | multi_array_dimension cfa_abstract_ptr
[4d51835]3492 { $$ = $2->addNewArray( $1 ); }
3493 ;
[b87a5ed]3494
[c0aa336]3495cfa_abstract_tuple: // CFA
[c0a33d2]3496 '[' push cfa_abstract_parameter_list pop ']'
3497 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3498 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3499 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3500 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3501 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3502 ;
[b87a5ed]3503
[c0aa336]3504cfa_abstract_function: // CFA
[40de461]3505// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3506// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3507 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3508 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3509 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3510 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3511 ;
[b87a5ed]3512
[de62360d]3513// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3514// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3515//
[de62360d]3516// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3517// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3518//
3519// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3520// prototype-format parameter type declarators) is an obsolescent feature."
3521//
[de62360d]3522// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3523// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3524
[c11e31c]3525//************************* MISCELLANEOUS ********************************
[51b73452]3526
[b87a5ed]3527comma_opt: // redundant comma
[4d51835]3528 // empty
3529 | ','
3530 ;
[51b73452]3531
[5a51798]3532default_initializer_opt:
[4d51835]3533 // empty
[58dd019]3534 { $$ = nullptr; }
[4d51835]3535 | '=' assignment_expression
3536 { $$ = $2; }
3537 ;
[51b73452]3538
3539%%
[a1c9ddd]3540
[c11e31c]3541// ----end of grammar----
[51b73452]3542
[c11e31c]3543// Local Variables: //
[b87a5ed]3544// mode: c++ //
[de62360d]3545// tab-width: 4 //
[c11e31c]3546// compile-command: "make install" //
3547// End: //
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