source: src/Parser/parser.yy@ 9db2c92

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast-unique-expr pthread-emulation qualifiedEnum stuck-waitfor-destruct
Last change on this file since 9db2c92 was fd54fef, checked in by Michael Brooks <mlbrooks@…>, 5 years ago

Converting the project to use the new syntax for otype, dtype and ttytpe.

Changed prelude (gen), libcfa and test suite to use it. Added a simple deprecation rule of the old syntax to the parser; we might wish to support both syntaxes "officially," like with an extra CLI switch, but this measure should serve as a simple reminder for our team to try the new syntax.

  • Property mode set to 100644
File size: 137.6 KB
RevLine 
[b87a5ed]1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
[9335ecc]7// parser.yy --
[974906e2]8//
[c11e31c]9// Author : Peter A. Buhr
10// Created On : Sat Sep 1 20:22:55 2001
[936e9f4]11// Last Modified By : Peter A. Buhr
[b66d14a]12// Last Modified On : Mon Jan 11 21:32:10 2021
13// Update Count : 4633
[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
[2298f728]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") ) {
189 type = new ExpressionNode( new CastExpr( maybeMoveBuild< Expression >(type), new BasicType( Type::Qualifiers(), BasicType::SignedInt ) ) );
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
[d3bc0ad]442%type<decl> type_specifier type_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
[44a81853]447%type<decl> attribute_list_opt attribute_list attribute_name_list attribute 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
[513e165]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 $$ = $1;
605 }
[24c3b67]606 ;
607
608generic_association: // C11
609 type_no_function ':' assignment_expression
[d807ca28]610 {
611 // create a GenericExpr wrapper with one association pair
612 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>($3) } } );
613 }
[24c3b67]614 | DEFAULT ':' assignment_expression
[d807ca28]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:
[db70fe4]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:
[db70fe4]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
[db70fe4]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
[db70fe4]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
[513e165]796 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild< Expression >( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]797 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[513e165]798 { $$ = 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." ); $$ = nullptr; }
[4d51835]974 ;
[51b73452]975
976comma_expression:
[4d51835]977 assignment_expression
[9706554]978 | comma_expression ',' assignment_expression
[513e165]979 { $$ = 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 { $$ = $1; }
1103 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[db70fe4]1104 { $$ = 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 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1446 ;
[b87a5ed]1447
1448asm_operand: // GCC
[ab57786]1449 string_literal '(' constant_expression ')'
[665f432]1450 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild< Expression >( $3 ) ) ); }
1451 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
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 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1704 ;
[b87a5ed]1705
1706declaration_specifier: // type specifier + storage class
[4d51835]1707 basic_declaration_specifier
1708 | sue_declaration_specifier
[84d58c5]1709 | type_declaration_specifier
[4d51835]1710 ;
[b87a5ed]1711
[d0ffed1]1712declaration_specifier_nobody: // type specifier + storage class - {...}
1713 // Preclude SUE declarations in restricted scopes:
1714 //
1715 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1716 //
1717 // because it is impossible to call f due to name equivalence.
1718 basic_declaration_specifier
1719 | sue_declaration_specifier_nobody
[84d58c5]1720 | type_declaration_specifier
[d0ffed1]1721 ;
1722
1723type_specifier: // type specifier
[4d51835]1724 basic_type_specifier
1725 | sue_type_specifier
[84d58c5]1726 | type_type_specifier
[4d51835]1727 ;
[b87a5ed]1728
[d0ffed1]1729type_specifier_nobody: // type specifier - {...}
1730 // Preclude SUE declarations in restricted scopes:
1731 //
1732 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1733 //
1734 // because it is impossible to call f due to name equivalence.
1735 basic_type_specifier
1736 | sue_type_specifier_nobody
[84d58c5]1737 | type_type_specifier
[d0ffed1]1738 ;
1739
[b87a5ed]1740type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1741 // empty
[58dd019]1742 { $$ = nullptr; }
[4d51835]1743 | type_qualifier_list
1744 ;
[51b73452]1745
1746type_qualifier_list:
[de62360d]1747 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1748 //
[de62360d]1749 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1750 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1751 // appeared only once.
[4d51835]1752 type_qualifier
1753 | type_qualifier_list type_qualifier
1754 { $$ = $1->addQualifiers( $2 ); }
1755 ;
[51b73452]1756
1757type_qualifier:
[4d51835]1758 type_qualifier_name
1759 | attribute
1760 ;
[51b73452]1761
1762type_qualifier_name:
[4d51835]1763 CONST
[738e304]1764 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1765 | RESTRICT
[738e304]1766 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1767 | VOLATILE
[738e304]1768 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1769 | ATOMIC
[738e304]1770 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1771 | forall
1772 ;
1773
1774forall:
[35718a9]1775 FORALL '(' type_parameter_list ')' // CFA
1776 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1777 ;
[51b73452]1778
1779declaration_qualifier_list:
[4d51835]1780 storage_class_list
[de62360d]1781 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1782 { $$ = $1->addQualifiers( $2 ); }
1783 | declaration_qualifier_list type_qualifier_list storage_class_list
1784 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1785 ;
[51b73452]1786
1787storage_class_list:
[de62360d]1788 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1789 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1790 //
[de62360d]1791 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1792 // specifiers in a declaration.
[4d51835]1793 storage_class
1794 | storage_class_list storage_class
1795 { $$ = $1->addQualifiers( $2 ); }
1796 ;
[51b73452]1797
1798storage_class:
[4d51835]1799 EXTERN
[68fe077a]1800 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1801 | STATIC
[68fe077a]1802 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1803 | AUTO
[68fe077a]1804 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1805 | REGISTER
[68fe077a]1806 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1807 | THREADLOCAL // C11
[68fe077a]1808 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1809 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1810 | INLINE // C99
[ddfd945]1811 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1812 | FORTRAN // C99
[ddfd945]1813 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1814 | NORETURN // C11
[ddfd945]1815 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1816 ;
[51b73452]1817
1818basic_type_name:
[201aeb9]1819 VOID
[4d51835]1820 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1821 | BOOL // C99
1822 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1823 | CHAR
1824 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1825 | INT
1826 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1827 | INT128
1828 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1829 | UINT128
1830 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1831 | FLOAT
1832 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1833 | DOUBLE
1834 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1835 | uuFLOAT80
1836 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1837 | uuFLOAT128
1838 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1839 | uFLOAT16
1840 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1841 | uFLOAT32
1842 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1843 | uFLOAT32X
1844 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1845 | uFLOAT64
1846 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1847 | uFLOAT64X
1848 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1849 | uFLOAT128
1850 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[4d51835]1851 | COMPLEX // C99
[5b639ee]1852 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1853 | IMAGINARY // C99
[5b639ee]1854 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1855 | SIGNED
1856 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1857 | UNSIGNED
1858 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1859 | SHORT
1860 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1861 | LONG
1862 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1863 | VALIST // GCC, __builtin_va_list
1864 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1865 | AUTO_TYPE
1866 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[4d51835]1867 ;
[51b73452]1868
1869basic_declaration_specifier:
[4d51835]1870 // A semantic check is necessary for conflicting storage classes.
1871 basic_type_specifier
1872 | declaration_qualifier_list basic_type_specifier
1873 { $$ = $2->addQualifiers( $1 ); }
1874 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1875 { $$ = $1->addQualifiers( $2 ); }
1876 | basic_declaration_specifier storage_class type_qualifier_list
1877 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1878 | basic_declaration_specifier storage_class basic_type_specifier
1879 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1880 ;
[51b73452]1881
1882basic_type_specifier:
[84d58c5]1883 direct_type
[f38e7d7]1884 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1885 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1886 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1887 ;
[51b73452]1888
[84d58c5]1889direct_type:
[4d51835]1890 basic_type_name
1891 | type_qualifier_list basic_type_name
1892 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1893 | direct_type type_qualifier
[4d51835]1894 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1895 | direct_type basic_type_name
[4d51835]1896 { $$ = $1->addType( $2 ); }
1897 ;
[51b73452]1898
[84d58c5]1899indirect_type:
[b6ad601]1900 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]1901 { $$ = $3; }
[b6ad601]1902 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]1903 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]1904 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
1905 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
1906 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
1907 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]1908 | ZERO_T // CFA
1909 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1910 | ONE_T // CFA
1911 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1912 ;
[51b73452]1913
[d0ffed1]1914sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1915 sue_type_specifier
1916 | declaration_qualifier_list sue_type_specifier
1917 { $$ = $2->addQualifiers( $1 ); }
1918 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1919 { $$ = $1->addQualifiers( $2 ); }
1920 | sue_declaration_specifier storage_class type_qualifier_list
1921 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1922 ;
[51b73452]1923
[d0ffed1]1924sue_type_specifier: // struct, union, enum + type specifier
1925 elaborated_type
[fdca7c6]1926 | type_qualifier_list
1927 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1928 elaborated_type
1929 { $$ = $3->addQualifiers( $1 ); }
[4d51835]1930 | sue_type_specifier type_qualifier
[284da8c]1931 {
1932 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
1933 $$ = $1->addQualifiers( $2 );
1934 }
[4d51835]1935 ;
[51b73452]1936
[d0ffed1]1937sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1938 sue_type_specifier_nobody
1939 | declaration_qualifier_list sue_type_specifier_nobody
1940 { $$ = $2->addQualifiers( $1 ); }
1941 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1942 { $$ = $1->addQualifiers( $2 ); }
1943 | sue_declaration_specifier_nobody storage_class type_qualifier_list
1944 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1945 ;
1946
1947sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1948 elaborated_type_nobody
1949 | type_qualifier_list elaborated_type_nobody
1950 { $$ = $2->addQualifiers( $1 ); }
1951 | sue_type_specifier_nobody type_qualifier
1952 { $$ = $1->addQualifiers( $2 ); }
1953 ;
1954
[84d58c5]1955type_declaration_specifier:
1956 type_type_specifier
1957 | declaration_qualifier_list type_type_specifier
[4d51835]1958 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1959 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]1960 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1961 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]1962 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1963 ;
[b87a5ed]1964
[84d58c5]1965type_type_specifier: // typedef types
1966 type_name
1967 | type_qualifier_list type_name
1968 { $$ = $2->addQualifiers( $1 ); }
1969 | type_type_specifier type_qualifier
1970 { $$ = $1->addQualifiers( $2 ); }
1971 ;
1972
1973type_name:
[4d51835]1974 TYPEDEFname
1975 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]1976 | '.' TYPEDEFname
[47498bd]1977 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]1978 | type_name '.' TYPEDEFname
[c5d7701]1979 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]1980 | typegen_name
1981 | '.' typegen_name
[47498bd]1982 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]1983 | type_name '.' typegen_name
[c5d7701]1984 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]1985 ;
1986
1987typegen_name: // CFA
[65d6de4]1988 TYPEGENname
1989 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1990 | TYPEGENname '(' ')'
[67cf18c]1991 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1992 | TYPEGENname '(' type_list ')'
[84d58c5]1993 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]1994 ;
[51b73452]1995
[d0ffed1]1996elaborated_type: // struct, union, enum
[c0aa336]1997 aggregate_type
1998 | enum_type
[4d51835]1999 ;
[51b73452]2000
[d0ffed1]2001elaborated_type_nobody: // struct, union, enum - {...}
2002 aggregate_type_nobody
2003 | enum_type_nobody
2004 ;
2005
[3d56d15b]2006fred:
2007 // empty
2008 { yyy = false; }
2009 ;
2010
[d0ffed1]2011aggregate_type: // struct, union
[fc20514]2012 aggregate_key attribute_list_opt
2013 { forall = false; } // reset
2014 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2015 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[033ff37]2016 | aggregate_key attribute_list_opt identifier fred
[fdca7c6]2017 {
[26ef3b2]2018 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2019 forall = false; // reset
2020 }
[284da8c]2021 '{' field_declaration_list_opt '}' type_parameters_opt
2022 { $$ = DeclarationNode::newAggregate( $1, $3, $9, $7, true )->addQualifiers( $2 ); }
[3d56d15b]2023 | aggregate_key attribute_list_opt type_name fred
[407bde5]2024 {
[7de22b28]2025 // 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]2026 typedefTable.makeTypedef( *$3->type->leafName(), forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2027 forall = false; // reset
2028 }
[284da8c]2029 '{' field_declaration_list_opt '}' type_parameters_opt
2030 { $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $9, $7, true )->addQualifiers( $2 ); }
[d0ffed1]2031 | aggregate_type_nobody
2032 ;
2033
[284da8c]2034type_parameters_opt:
2035 // empty
2036 { $$ = nullptr; } %prec '}'
2037 | '(' type_list ')'
2038 { $$ = $2; }
2039 ;
2040
[d0ffed1]2041aggregate_type_nobody: // struct, union - {...}
[033ff37]2042 aggregate_key attribute_list_opt identifier fred
[84d58c5]2043 {
[26ef3b2]2044 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2045 forall = false; // reset
[84d58c5]2046 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2047 }
[3d56d15b]2048 | aggregate_key attribute_list_opt type_name fred
[65d6de4]2049 {
[fc20514]2050 forall = false; // reset
[65d6de4]2051 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2052 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2053 // delete newFromTypeGen.
2054 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2055 $3->type->symbolic.name = nullptr;
2056 $3->type->symbolic.actuals = nullptr;
2057 delete $3;
2058 }
[4d51835]2059 ;
[51b73452]2060
2061aggregate_key:
[e307e12]2062 aggregate_data
2063 | aggregate_control
2064 ;
2065
2066aggregate_data:
[c0aa336]2067 STRUCT
[312029a]2068 { yyy = true; $$ = AggregateDecl::Struct; }
[c0aa336]2069 | UNION
[312029a]2070 { yyy = true; $$ = AggregateDecl::Union; }
[e307e12]2071 | EXCEPTION // CFA
[25744d2]2072 // { yyy = true; $$ = AggregateDecl::Exception; }
2073 { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2074 ;
2075
2076aggregate_control: // CFA
[cbbd8fd7]2077 MONITOR
2078 { yyy = true; $$ = AggregateDecl::Monitor; }
2079 | MUTEX STRUCT
2080 { yyy = true; $$ = AggregateDecl::Monitor; }
2081 | GENERATOR
[427854b]2082 { yyy = true; $$ = AggregateDecl::Generator; }
[cbbd8fd7]2083 | MUTEX GENERATOR
[aeb5d0d]2084 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2085 | COROUTINE
[312029a]2086 { yyy = true; $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2087 | MUTEX COROUTINE
[aeb5d0d]2088 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2089 | THREAD
[312029a]2090 { yyy = true; $$ = AggregateDecl::Thread; }
[cbbd8fd7]2091 | MUTEX THREAD
[aeb5d0d]2092 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2093 ;
[51b73452]2094
[7fdb94e1]2095field_declaration_list_opt:
[5d125e4]2096 // empty
[58dd019]2097 { $$ = nullptr; }
[7fdb94e1]2098 | field_declaration_list_opt field_declaration
[a7741435]2099 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2100 ;
[51b73452]2101
2102field_declaration:
[679e644]2103 type_specifier field_declaring_list_opt ';'
[f7e4db27]2104 { $$ = fieldDecl( $1, $2 ); }
[679e644]2105 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2106 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2107 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2108 {
[dea36ee]2109 if ( ! $3 ) { // field declarator ?
2110 $3 = DeclarationNode::newName( nullptr );
2111 } // if
[679a260]2112 $3->inLine = true;
[679e644]2113 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2114 distInl( $3 );
[8f91c9ae]2115 }
[e307e12]2116 | INLINE aggregate_control ';' // CFA
2117 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2118 | typedef_declaration ';' // CFA
2119 | cfa_field_declaring_list ';' // CFA, new style field declaration
2120 | EXTENSION cfa_field_declaring_list ';' // GCC
2121 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2122 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2123 { $$ = $2; } // mark all fields in list
[46fa473]2124 | cfa_typedef_declaration ';' // CFA
[b47b827]2125 | static_assert // C11
[4d51835]2126 ;
[b87a5ed]2127
[679e644]2128field_declaring_list_opt:
2129 // empty
2130 { $$ = nullptr; }
2131 | field_declarator
2132 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2133 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2134 ;
[51b73452]2135
[679e644]2136field_declarator:
[e07caa2]2137 bit_subrange_size // C special case, no field name
[4d51835]2138 { $$ = DeclarationNode::newBitfield( $1 ); }
2139 | variable_declarator bit_subrange_size_opt
[679e644]2140 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2141 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2142 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2143 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2144 { $$ = $1->addBitfield( $2 ); }
[679e644]2145 ;
2146
[e07caa2]2147field_abstract_list_opt:
2148 // empty
[dea36ee]2149 { $$ = nullptr; }
[e07caa2]2150 | field_abstract
2151 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2152 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2153 ;
2154
[e07caa2]2155field_abstract:
[f7e4db27]2156 // no bit fields
[e07caa2]2157 variable_abstract_declarator
[679e644]2158 ;
2159
2160cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2161 // bit-fields are handled by C declarations
[033ff37]2162 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2163 { $$ = $1->addName( $2 ); }
[033ff37]2164 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2165 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2166 ;
2167
2168cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2169 // bit-fields are handled by C declarations
[679e644]2170 cfa_abstract_declarator_tuple
2171 | cfa_field_abstract_list ','
2172 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2173 ;
[51b73452]2174
2175bit_subrange_size_opt:
[4d51835]2176 // empty
[58dd019]2177 { $$ = nullptr; }
[4d51835]2178 | bit_subrange_size
2179 ;
[51b73452]2180
2181bit_subrange_size:
[c786e1d]2182 ':' assignment_expression
[4d51835]2183 { $$ = $2; }
2184 ;
[51b73452]2185
[d0ffed1]2186enum_type: // enum
[c0aa336]2187 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2188 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[033ff37]2189 | ENUM attribute_list_opt identifier
[d0ffed1]2190 { typedefTable.makeTypedef( *$3 ); }
2191 '{' enumerator_list comma_opt '}'
2192 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[407bde5]2193 | ENUM attribute_list_opt type_name
2194 '{' enumerator_list comma_opt '}'
2195 { $$ = DeclarationNode::newEnum( $3->type->symbolic.name, $5, true )->addQualifiers( $2 ); }
[d0ffed1]2196 | enum_type_nobody
2197 ;
2198
2199enum_type_nobody: // enum - {...}
[033ff37]2200 ENUM attribute_list_opt identifier
[45161b4d]2201 {
[c0aa336]2202 typedefTable.makeTypedef( *$3 );
[ca1a547]2203 $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 );
[45161b4d]2204 }
[407bde5]2205 | ENUM attribute_list_opt type_name
2206 {
2207 typedefTable.makeTypedef( *$3->type->symbolic.name );
2208 $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 );
2209 }
[4d51835]2210 ;
[51b73452]2211
2212enumerator_list:
[033ff37]2213 identifier_or_type_name enumerator_value_opt
[4d51835]2214 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[033ff37]2215 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[4d51835]2216 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
2217 ;
[51b73452]2218
2219enumerator_value_opt:
[4d51835]2220 // empty
[58dd019]2221 { $$ = nullptr; }
[4d51835]2222 | '=' constant_expression
2223 { $$ = $2; }
2224 ;
[51b73452]2225
[5a51798]2226cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2227 // empty
[2a8427c6]2228 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2229 | ELLIPSIS
[58dd019]2230 { $$ = nullptr; }
[2a8427c6]2231 | cfa_abstract_parameter_list
[c0aa336]2232 | cfa_parameter_list
[c0a33d2]2233 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2234 { $$ = $1->appendList( $5 ); }
2235 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2236 { $$ = $1->addVarArgs(); }
[c0a33d2]2237 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2238 { $$ = $1->addVarArgs(); }
2239 ;
[b87a5ed]2240
[c0aa336]2241cfa_parameter_list: // CFA
2242 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2243 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2244 cfa_parameter_declaration
[c0a33d2]2245 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2246 { $$ = $1->appendList( $5 ); }
2247 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2248 { $$ = $1->appendList( $5 ); }
2249 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2250 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2251 ;
[b87a5ed]2252
[c0aa336]2253cfa_abstract_parameter_list: // CFA, new & old style abstract
2254 cfa_abstract_parameter_declaration
[c0a33d2]2255 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2256 { $$ = $1->appendList( $5 ); }
[4d51835]2257 ;
[51b73452]2258
2259parameter_type_list_opt:
[4d51835]2260 // empty
[58dd019]2261 { $$ = nullptr; }
[2a8427c6]2262 | ELLIPSIS
2263 { $$ = nullptr; }
2264 | parameter_list
[4d51835]2265 | parameter_list pop ',' push ELLIPSIS
2266 { $$ = $1->addVarArgs(); }
2267 ;
[b87a5ed]2268
2269parameter_list: // abstract + real
[4d51835]2270 abstract_parameter_declaration
2271 | parameter_declaration
2272 | parameter_list pop ',' push abstract_parameter_declaration
2273 { $$ = $1->appendList( $5 ); }
2274 | parameter_list pop ',' push parameter_declaration
2275 { $$ = $1->appendList( $5 ); }
2276 ;
[51b73452]2277
[de62360d]2278// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2279// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2280
[c0aa336]2281cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2282 parameter_declaration
[5a51798]2283 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2284 { $$ = $1->addName( $2 ); }
[5a51798]2285 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2286 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2287 { $$ = $1->addName( $2 ); }
[5a51798]2288 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2289 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2290 | cfa_function_specifier
[4d51835]2291 ;
[b87a5ed]2292
[c0aa336]2293cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2294 abstract_parameter_declaration
[c0aa336]2295 | cfa_identifier_parameter_declarator_no_tuple
2296 | cfa_abstract_tuple
2297 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2298 | type_qualifier_list cfa_abstract_tuple
[4d51835]2299 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2300 | cfa_abstract_function
[4d51835]2301 ;
[51b73452]2302
2303parameter_declaration:
[d0ffed1]2304 // No SUE declaration in parameter list.
[5a51798]2305 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2306 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2307 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2308 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2309 ;
[51b73452]2310
2311abstract_parameter_declaration:
[5a51798]2312 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2313 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2314 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2315 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2316 ;
[51b73452]2317
[c11e31c]2318// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2319// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2320// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2321
[b87a5ed]2322identifier_list: // K&R-style parameter list => no types
[033ff37]2323 identifier
[4d51835]2324 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2325 | identifier_list ',' identifier
[4d51835]2326 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2327 ;
[51b73452]2328
[2871210]2329identifier_or_type_name:
[4d51835]2330 identifier
2331 | TYPEDEFname
2332 | TYPEGENname
2333 ;
[51b73452]2334
[84d58c5]2335type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2336 cfa_abstract_declarator_tuple // CFA
[4d51835]2337 | type_specifier
[c0aa336]2338 | type_specifier abstract_declarator
[4d51835]2339 { $$ = $2->addType( $1 ); }
2340 ;
[b87a5ed]2341
[84d58c5]2342type: // typeof, assertion
2343 type_no_function
[c0aa336]2344 | cfa_abstract_function // CFA
[4d51835]2345 ;
[51b73452]2346
2347initializer_opt:
[4d51835]2348 // empty
[58dd019]2349 { $$ = nullptr; }
[2871210]2350 | '=' initializer
2351 { $$ = $2; }
[641c3d0]2352 | '=' VOID
[3ed994e]2353 { $$ = new InitializerNode( true ); }
[097e2b0]2354 | ATassign initializer
[974906e2]2355 { $$ = $2->set_maybeConstructed( false ); }
[4d51835]2356 ;
[51b73452]2357
2358initializer:
[de62360d]2359 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2360 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2361 ;
[51b73452]2362
[7fdb94e1]2363initializer_list_opt:
[097e2b0]2364 // empty
[58dd019]2365 { $$ = nullptr; }
[097e2b0]2366 | initializer
[4d51835]2367 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2368 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2369 | initializer_list_opt ',' designation initializer
[4a063df]2370 { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2371 ;
[b87a5ed]2372
[de62360d]2373// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2374// '=' to separator the designator from the initializer value, as in:
[c11e31c]2375//
[b87a5ed]2376// int x[10] = { [1] = 3 };
[c11e31c]2377//
[de62360d]2378// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2379// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2380// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2381// shift/reduce conflicts
[51b73452]2382
2383designation:
[4d51835]2384 designator_list ':' // C99, CFA uses ":" instead of "="
[033ff37]2385 | identifier ':' // GCC, field name
[d1625f8]2386 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2387 ;
[51b73452]2388
[b87a5ed]2389designator_list: // C99
[4d51835]2390 designator
[2871210]2391 | designator_list designator
[4a063df]2392 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2393 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2394 ;
[51b73452]2395
2396designator:
[033ff37]2397 '.' identifier // C99, field name
[d1625f8]2398 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2399 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2400 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2401 { $$ = $3; }
[c0a33d2]2402 | '[' push subrange pop ']' // CFA, multiple array elements
2403 { $$ = $3; }
2404 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
2405 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $3 ), maybeMoveBuild< Expression >( $5 ) ) ); }
[679e644]2406 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2407 { $$ = $4; }
[4d51835]2408 ;
[51b73452]2409
[de62360d]2410// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2411// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2412//
2413// Overloading: function, data, and operator identifiers may be overloaded.
2414//
[3ca7ef3]2415// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2416// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2417// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2418//
[de62360d]2419// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2420// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2421//
2422// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2423// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2424// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2425// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2426// on type arguments of polymorphic functions.
[c11e31c]2427
[b87a5ed]2428type_parameter_list: // CFA
[67cf18c]2429 type_parameter
2430 | type_parameter_list ',' type_parameter
[4d51835]2431 { $$ = $1->appendList( $3 ); }
2432 ;
[b87a5ed]2433
[84d58c5]2434type_initializer_opt: // CFA
2435 // empty
2436 { $$ = nullptr; }
2437 | '=' type
2438 { $$ = $2; }
2439 ;
2440
[b87a5ed]2441type_parameter: // CFA
[033ff37]2442 type_class identifier_or_type_name
[fd54fef]2443 { typedefTable.addToScope( *$2, TYPEDEFname, "9" );
2444 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated" ); }
2445 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated" ); }
2446 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated" ); }
2447 }
[5a51798]2448 type_initializer_opt assertion_list_opt
[67cf18c]2449 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2450 | identifier_or_type_name new_type_class
2451 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2452 type_initializer_opt assertion_list_opt
2453 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2454 | '[' identifier_or_type_name ']'
[b66d14a]2455 {
2456 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
2457 $$ = DeclarationNode::newTypeParam( TypeDecl::ALtype, $2 );
2458 }
[5a51798]2459 // | type_specifier identifier_parameter_declarator
[9997fee]2460 | assertion_list
[07de76b]2461 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2462 ;
[b87a5ed]2463
[5a51798]2464new_type_class: // CFA
2465 // empty
2466 { $$ = TypeDecl::Otype; }
2467 | '&'
2468 { $$ = TypeDecl::Dtype; }
2469 | '*'
[b66d14a]2470 { $$ = TypeDecl::DStype; } // dtype + sized
[5a51798]2471 | ELLIPSIS
2472 { $$ = TypeDecl::Ttype; }
2473 ;
2474
[b87a5ed]2475type_class: // CFA
[4040425]2476 OTYPE
[07de76b]2477 { $$ = TypeDecl::Otype; }
[4d51835]2478 | DTYPE
[07de76b]2479 { $$ = TypeDecl::Dtype; }
[8f60f0b]2480 | FTYPE
[07de76b]2481 { $$ = TypeDecl::Ftype; }
[8f60f0b]2482 | TTYPE
[07de76b]2483 { $$ = TypeDecl::Ttype; }
[4d51835]2484 ;
[b87a5ed]2485
2486assertion_list_opt: // CFA
[4d51835]2487 // empty
[58dd019]2488 { $$ = nullptr; }
[9997fee]2489 | assertion_list
2490 ;
2491
2492assertion_list: // CFA
2493 assertion
2494 | assertion_list assertion
[3ca7ef3]2495 { $$ = $1->appendList( $2 ); }
[4d51835]2496 ;
[b87a5ed]2497
2498assertion: // CFA
[033ff37]2499 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2500 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2501 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2502 { $$ = $4; }
[35718a9]2503 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2504 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2505 ;
[b87a5ed]2506
[84d58c5]2507type_list: // CFA
2508 type
[513e165]2509 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2510 | assignment_expression
[3007c0b]2511 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $1->build()) ); $$ = nullptr; }
[84d58c5]2512 | type_list ',' type
[4a063df]2513 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2514 | type_list ',' assignment_expression
[3007c0b]2515 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $3->build()) ); $$ = nullptr; }
2516 // { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2517 ;
[b87a5ed]2518
2519type_declaring_list: // CFA
[4040425]2520 OTYPE type_declarator
[4d51835]2521 { $$ = $2; }
[4040425]2522 | storage_class_list OTYPE type_declarator
[4d51835]2523 { $$ = $3->addQualifiers( $1 ); }
2524 | type_declaring_list ',' type_declarator
[a7c90d4]2525 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2526 ;
[b87a5ed]2527
2528type_declarator: // CFA
[4d51835]2529 type_declarator_name assertion_list_opt
2530 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2531 | type_declarator_name assertion_list_opt '=' type
[4d51835]2532 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2533 ;
[b87a5ed]2534
2535type_declarator_name: // CFA
[033ff37]2536 identifier_or_type_name
[4d51835]2537 {
[ecae5860]2538 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2539 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2540 }
[033ff37]2541 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2542 {
[ecae5860]2543 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2544 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2545 }
2546 ;
[b87a5ed]2547
[4040425]2548trait_specifier: // CFA
[033ff37]2549 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2550 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2551 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2552 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2553 ;
[b87a5ed]2554
[84d58c5]2555trait_declaration_list: // CFA
[4040425]2556 trait_declaration
[13e8427]2557 | trait_declaration_list pop push trait_declaration
2558 { $$ = $1->appendList( $4 ); }
[4d51835]2559 ;
[b87a5ed]2560
[84d58c5]2561trait_declaration: // CFA
[13e8427]2562 cfa_trait_declaring_list ';'
2563 | trait_declaring_list ';'
[4d51835]2564 ;
[b87a5ed]2565
[c0aa336]2566cfa_trait_declaring_list: // CFA
2567 cfa_variable_specifier
2568 | cfa_function_specifier
2569 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2570 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2571 ;
[b87a5ed]2572
[4040425]2573trait_declaring_list: // CFA
[4d51835]2574 type_specifier declarator
[7fdb94e1]2575 { $$ = $2->addType( $1 ); }
[4040425]2576 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2577 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2578 ;
[51b73452]2579
[c11e31c]2580//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2581
2582translation_unit:
[3d56d15b]2583 // empty, input file
[4d51835]2584 | external_definition_list
[a7741435]2585 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2586 ;
[51b73452]2587
2588external_definition_list:
[35718a9]2589 push external_definition pop
2590 { $$ = $2; }
[fc20514]2591 | external_definition_list push external_definition pop
2592 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2593 ;
[51b73452]2594
2595external_definition_list_opt:
[4d51835]2596 // empty
[58dd019]2597 { $$ = nullptr; }
[3d56d15b]2598 | external_definition_list
2599 ;
2600
2601up:
[fc20514]2602 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2603 ;
2604
2605down:
2606 { typedefTable.down(); }
[4d51835]2607 ;
[51b73452]2608
2609external_definition:
[4d51835]2610 declaration
2611 | external_function_definition
[ecae5860]2612 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2613 {
2614 distExt( $2 ); // mark all fields in list
2615 $$ = $2;
2616 }
[e994912]2617 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
2618 {
[6d539f83]2619 $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) );
[e994912]2620 }
[c0aa336]2621 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2622 {
[3b8e52c]2623 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2624 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2625 }
[3d56d15b]2626 '{' up external_definition_list_opt down '}'
[4d51835]2627 {
2628 linkage = linkageStack.top();
2629 linkageStack.pop();
[3d56d15b]2630 $$ = $6;
[8e9cbb2]2631 }
[9997fee]2632 | type_qualifier_list
2633 {
[3d56d15b]2634 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2635 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2636 }
2637 '{' up external_definition_list_opt down '}' // CFA, namespace
2638 {
[4c3ee8d]2639 distQual( $5, $1 );
[fc20514]2640 forall = false;
[3d56d15b]2641 $$ = $5;
[9997fee]2642 }
2643 | declaration_qualifier_list
2644 {
[4c3ee8d]2645 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2646 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2647 }
2648 '{' up external_definition_list_opt down '}' // CFA, namespace
2649 {
[4c3ee8d]2650 distQual( $5, $1 );
[fc20514]2651 forall = false;
[3d56d15b]2652 $$ = $5;
[9997fee]2653 }
2654 | declaration_qualifier_list type_qualifier_list
2655 {
[3d56d15b]2656 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]2657 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2658 }
[3d56d15b]2659 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2660 {
[284da8c]2661 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2662 forall = false;
[3d56d15b]2663 $$ = $6;
[9997fee]2664 }
[4d51835]2665 ;
2666
2667external_function_definition:
2668 function_definition
[de62360d]2669 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2670 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2671 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2672 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2673 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2674 | function_declarator compound_statement
[c0a33d2]2675 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2676 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2677 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2678 ;
[51b73452]2679
[8b47e50]2680with_clause_opt:
2681 // empty
[9997fee]2682 { $$ = nullptr; forall = false; }
[578e6037]2683 | WITH '(' tuple_expression_list ')'
[9997fee]2684 { $$ = $3; forall = false; }
[8b47e50]2685 ;
2686
[51b73452]2687function_definition:
[8b47e50]2688 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2689 {
[481115f]2690 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2691 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2692 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2693 $$ = $1;
[4d51835]2694 }
[8b47e50]2695 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2696 {
[c38ae92]2697 rebindForall( $1, $2 );
[7fdb94e1]2698 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2699 }
2700 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2701 {
2702 rebindForall( $1, $2 );
[5fcba14]2703 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2704 }
[a16a7ec]2705 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2706 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2707 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2708 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2709 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2710 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2711 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2712 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2713 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2714
2715 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2716 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2717 {
[c38ae92]2718 rebindForall( $1, $2 );
[5fcba14]2719 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2720 }
[a16a7ec]2721 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2722 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2723 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2724 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2725 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2726 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2727 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2728 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2729 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2730 ;
[51b73452]2731
2732declarator:
[4d51835]2733 variable_declarator
[c6b1105]2734 | variable_type_redeclarator
[4d51835]2735 | function_declarator
2736 ;
[51b73452]2737
2738subrange:
[4d51835]2739 constant_expression '~' constant_expression // CFA, integer subrange
[db70fe4]2740 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[4d51835]2741 ;
[b87a5ed]2742
2743asm_name_opt: // GCC
[4d51835]2744 // empty
[58dd019]2745 { $$ = nullptr; }
2746 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2747 {
2748 DeclarationNode * name = new DeclarationNode();
2749 name->asmName = $3;
2750 $$ = name->addQualifiers( $5 );
2751 }
[4d51835]2752 ;
[b87a5ed]2753
2754attribute_list_opt: // GCC
[4d51835]2755 // empty
[58dd019]2756 { $$ = nullptr; }
[4d51835]2757 | attribute_list
2758 ;
[b87a5ed]2759
2760attribute_list: // GCC
[4d51835]2761 attribute
2762 | attribute_list attribute
[1db21619]2763 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2764 ;
[b87a5ed]2765
2766attribute: // GCC
[44a81853]2767 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2768 { $$ = $4; }
[4d51835]2769 ;
[b87a5ed]2770
[44a81853]2771attribute_name_list: // GCC
2772 attribute_name
2773 | attribute_name_list ',' attribute_name
[c0aa336]2774 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2775 ;
[b87a5ed]2776
[44a81853]2777attribute_name: // GCC
[4d51835]2778 // empty
[44a81853]2779 { $$ = nullptr; }
2780 | attr_name
2781 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]2782 | attr_name '(' argument_expression_list_opt ')'
[44a81853]2783 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2784 ;
[b87a5ed]2785
[44a81853]2786attr_name: // GCC
2787 IDENTIFIER
[5b2edbc]2788 | quasi_keyword
[44a81853]2789 | TYPEDEFname
2790 | TYPEGENname
[114014c]2791 | FALLTHROUGH
2792 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2793 | CONST
[9ff56e7]2794 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2795 ;
[51b73452]2796
[c11e31c]2797// ============================================================================
[de62360d]2798// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2799// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2800// in:
[c11e31c]2801//
[b87a5ed]2802// int (*f())[10] { ... };
2803// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2804//
[de62360d]2805// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2806// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2807// ============================================================================
2808
2809// ----------------------------------------------------------------------------
[de62360d]2810// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2811// to define a variable or function prototype, e.g.:
[c11e31c]2812//
[b87a5ed]2813// valid declaration invalid definition
2814// ----------------- ------------------
[4d51835]2815// int f; int f {}
2816// int *f; int *f {}
[b87a5ed]2817// int f[10]; int f[10] {}
[4d51835]2818// int (*f)(int); int (*f)(int) {}
[c11e31c]2819//
[de62360d]2820// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2821// variable_declarator and function_declarator.
[c11e31c]2822// ----------------------------------------------------------------------------
2823
[de62360d]2824// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2825// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2826
2827variable_declarator:
[4d51835]2828 paren_identifier attribute_list_opt
[1db21619]2829 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2830 | variable_ptr
2831 | variable_array attribute_list_opt
[1db21619]2832 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2833 | variable_function attribute_list_opt
[1db21619]2834 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2835 ;
[51b73452]2836
2837paren_identifier:
[4d51835]2838 identifier
[7fdb94e1]2839 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2840 | '(' paren_identifier ')' // redundant parenthesis
2841 { $$ = $2; }
2842 ;
[51b73452]2843
2844variable_ptr:
[dd51906]2845 ptrref_operator variable_declarator
[ce8c12f]2846 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2847 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2848 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2849 | '(' variable_ptr ')' attribute_list_opt
2850 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2851 ;
[51b73452]2852
2853variable_array:
[4d51835]2854 paren_identifier array_dimension
2855 { $$ = $1->addArray( $2 ); }
2856 | '(' variable_ptr ')' array_dimension
2857 { $$ = $2->addArray( $4 ); }
2858 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
2859 { $$ = $2->addArray( $4 ); }
2860 | '(' variable_array ')' // redundant parenthesis
2861 { $$ = $2; }
2862 ;
[51b73452]2863
2864variable_function:
[4d51835]2865 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2866 { $$ = $2->addParamList( $6 ); }
2867 | '(' variable_function ')' // redundant parenthesis
2868 { $$ = $2; }
2869 ;
[51b73452]2870
[c6b1105]2871// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2872// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2873// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2874
2875function_declarator:
[4d51835]2876 function_no_ptr attribute_list_opt
[1db21619]2877 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2878 | function_ptr
2879 | function_array attribute_list_opt
[1db21619]2880 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2881 ;
[51b73452]2882
2883function_no_ptr:
[4d51835]2884 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2885 { $$ = $1->addParamList( $4 ); }
2886 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2887 { $$ = $2->addParamList( $6 ); }
2888 | '(' function_no_ptr ')' // redundant parenthesis
2889 { $$ = $2; }
2890 ;
[51b73452]2891
2892function_ptr:
[dd51906]2893 ptrref_operator function_declarator
[ce8c12f]2894 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2895 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]2896 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[4d51835]2897 | '(' function_ptr ')'
2898 { $$ = $2; }
2899 ;
[51b73452]2900
2901function_array:
[4d51835]2902 '(' function_ptr ')' array_dimension
2903 { $$ = $2->addArray( $4 ); }
2904 | '(' function_array ')' multi_array_dimension // redundant parenthesis
2905 { $$ = $2->addArray( $4 ); }
2906 | '(' function_array ')' // redundant parenthesis
2907 { $$ = $2; }
2908 ;
[51b73452]2909
[c0aa336]2910// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2911//
2912// f( a, b, c ) int a, *b, c[]; {}
2913//
2914// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2915// returning arrays and functions versus pointers to arrays and functions.
[51b73452]2916
[c0aa336]2917KR_function_declarator:
2918 KR_function_no_ptr
2919 | KR_function_ptr
2920 | KR_function_array
[4d51835]2921 ;
[51b73452]2922
[c0aa336]2923KR_function_no_ptr:
[4d51835]2924 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2925 { $$ = $1->addIdList( $3 ); }
[c0a33d2]2926 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2927 { $$ = $2->addParamList( $6 ); }
[c0aa336]2928 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]2929 { $$ = $2; }
2930 ;
[51b73452]2931
[c0aa336]2932KR_function_ptr:
2933 ptrref_operator KR_function_declarator
[ce8c12f]2934 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]2935 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]2936 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2937 | '(' KR_function_ptr ')'
[4d51835]2938 { $$ = $2; }
2939 ;
[51b73452]2940
[c0aa336]2941KR_function_array:
2942 '(' KR_function_ptr ')' array_dimension
[4d51835]2943 { $$ = $2->addArray( $4 ); }
[c0aa336]2944 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2945 { $$ = $2->addArray( $4 ); }
[c0aa336]2946 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]2947 { $$ = $2; }
2948 ;
[51b73452]2949
[2871210]2950// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]2951//
[b87a5ed]2952// typedef int foo;
2953// {
2954// int foo; // redefine typedef name in new scope
2955// }
[c11e31c]2956//
[de62360d]2957// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2958// and functions versus pointers to arrays and functions.
[51b73452]2959
[c6b1105]2960variable_type_redeclarator:
[2871210]2961 paren_type attribute_list_opt
[1db21619]2962 { $$ = $1->addQualifiers( $2 ); }
[2871210]2963 | type_ptr
2964 | type_array attribute_list_opt
[1db21619]2965 { $$ = $1->addQualifiers( $2 ); }
[2871210]2966 | type_function attribute_list_opt
[1db21619]2967 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2968 ;
[51b73452]2969
[2871210]2970paren_type:
2971 typedef
[2f0a0678]2972 // hide type name in enclosing scope by variable name
[c4f68dc]2973 {
2974 // if ( ! typedefTable.existsCurr( *$1->name ) ) {
2975 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
2976 // } else {
2977 // SemanticError( yylloc, string("'") + *$1->name + "' redeclared as different kind of symbol." ); $$ = nullptr;
2978 // } // if
2979 }
[2871210]2980 | '(' paren_type ')'
[4d51835]2981 { $$ = $2; }
2982 ;
[51b73452]2983
[2871210]2984type_ptr:
[c6b1105]2985 ptrref_operator variable_type_redeclarator
[ce8c12f]2986 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]2987 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]2988 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2989 | '(' type_ptr ')' attribute_list_opt
[c4f68dc]2990 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2991 ;
[51b73452]2992
[2871210]2993type_array:
2994 paren_type array_dimension
[4d51835]2995 { $$ = $1->addArray( $2 ); }
[2871210]2996 | '(' type_ptr ')' array_dimension
[4d51835]2997 { $$ = $2->addArray( $4 ); }
[2871210]2998 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2999 { $$ = $2->addArray( $4 ); }
[2871210]3000 | '(' type_array ')' // redundant parenthesis
[4d51835]3001 { $$ = $2; }
3002 ;
[51b73452]3003
[2871210]3004type_function:
3005 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3006 { $$ = $1->addParamList( $4 ); }
[2871210]3007 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3008 { $$ = $2->addParamList( $6 ); }
[2871210]3009 | '(' type_function ')' // redundant parenthesis
[4d51835]3010 { $$ = $2; }
3011 ;
[51b73452]3012
[c0aa336]3013// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3014// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3015// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3016// pointers to arrays and functions.
[51b73452]3017
3018identifier_parameter_declarator:
[4d51835]3019 paren_identifier attribute_list_opt
[1db21619]3020 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3021 | '&' MUTEX paren_identifier attribute_list_opt
3022 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3023 | identifier_parameter_ptr
3024 | identifier_parameter_array attribute_list_opt
[1db21619]3025 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3026 | identifier_parameter_function attribute_list_opt
[1db21619]3027 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3028 ;
[51b73452]3029
3030identifier_parameter_ptr:
[dd51906]3031 ptrref_operator identifier_parameter_declarator
[ce8c12f]3032 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3033 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3034 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3035 | '(' identifier_parameter_ptr ')' attribute_list_opt
3036 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3037 ;
[51b73452]3038
3039identifier_parameter_array:
[4d51835]3040 paren_identifier array_parameter_dimension
3041 { $$ = $1->addArray( $2 ); }
3042 | '(' identifier_parameter_ptr ')' array_dimension
3043 { $$ = $2->addArray( $4 ); }
3044 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3045 { $$ = $2->addArray( $4 ); }
3046 | '(' identifier_parameter_array ')' // redundant parenthesis
3047 { $$ = $2; }
3048 ;
[51b73452]3049
3050identifier_parameter_function:
[c0a33d2]3051 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3052 { $$ = $1->addParamList( $4 ); }
3053 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3054 { $$ = $2->addParamList( $6 ); }
[4d51835]3055 | '(' identifier_parameter_function ')' // redundant parenthesis
3056 { $$ = $2; }
3057 ;
[b87a5ed]3058
[de62360d]3059// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3060// e.g.:
[c11e31c]3061//
[b87a5ed]3062// typedef int foo;
[114014c]3063// forall( otype T ) struct foo;
[b87a5ed]3064// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3065//
[c0aa336]3066// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3067
[2871210]3068type_parameter_redeclarator:
[4d51835]3069 typedef attribute_list_opt
[1db21619]3070 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3071 | '&' MUTEX typedef attribute_list_opt
3072 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3073 | type_parameter_ptr
3074 | type_parameter_array attribute_list_opt
[1db21619]3075 { $$ = $1->addQualifiers( $2 ); }
[2871210]3076 | type_parameter_function attribute_list_opt
[1db21619]3077 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3078 ;
[51b73452]3079
3080typedef:
[4d51835]3081 TYPEDEFname
[7fdb94e1]3082 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3083 | TYPEGENname
[7fdb94e1]3084 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3085 ;
[51b73452]3086
[2871210]3087type_parameter_ptr:
[dd51906]3088 ptrref_operator type_parameter_redeclarator
[ce8c12f]3089 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3090 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3091 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3092 | '(' type_parameter_ptr ')' attribute_list_opt
3093 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3094 ;
[51b73452]3095
[2871210]3096type_parameter_array:
[4d51835]3097 typedef array_parameter_dimension
3098 { $$ = $1->addArray( $2 ); }
[2871210]3099 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3100 { $$ = $2->addArray( $4 ); }
3101 ;
[51b73452]3102
[2871210]3103type_parameter_function:
[c0a33d2]3104 typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3105 { $$ = $1->addParamList( $4 ); }
3106 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3107 { $$ = $2->addParamList( $6 ); }
[4d51835]3108 ;
[b87a5ed]3109
[de62360d]3110// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3111// which the type applies, e.g.:
[c11e31c]3112//
[b87a5ed]3113// sizeof( int );
[c0aa336]3114// sizeof( int * );
[b87a5ed]3115// sizeof( int [10] );
[c0aa336]3116// sizeof( int (*)() );
3117// sizeof( int () );
[c11e31c]3118//
[de62360d]3119// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3120// and functions versus pointers to arrays and functions.
[51b73452]3121
3122abstract_declarator:
[4d51835]3123 abstract_ptr
3124 | abstract_array attribute_list_opt
[1db21619]3125 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3126 | abstract_function attribute_list_opt
[1db21619]3127 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3128 ;
[51b73452]3129
3130abstract_ptr:
[dd51906]3131 ptrref_operator
[ce8c12f]3132 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3133 | ptrref_operator type_qualifier_list
[ce8c12f]3134 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3135 | ptrref_operator abstract_declarator
[ce8c12f]3136 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3137 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3138 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3139 | '(' abstract_ptr ')' attribute_list_opt
3140 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3141 ;
[51b73452]3142
3143abstract_array:
[4d51835]3144 array_dimension
3145 | '(' abstract_ptr ')' array_dimension
3146 { $$ = $2->addArray( $4 ); }
3147 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3148 { $$ = $2->addArray( $4 ); }
3149 | '(' abstract_array ')' // redundant parenthesis
3150 { $$ = $2; }
3151 ;
[51b73452]3152
3153abstract_function:
[c0a33d2]3154 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3155 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3156 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3157 { $$ = $2->addParamList( $6 ); }
[4d51835]3158 | '(' abstract_function ')' // redundant parenthesis
3159 { $$ = $2; }
3160 ;
[51b73452]3161
3162array_dimension:
[4d51835]3163 // Only the first dimension can be empty.
[2871210]3164 '[' ']'
[4d51835]3165 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3166 | '[' ']' multi_array_dimension
3167 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[4d51835]3168 | multi_array_dimension
3169 ;
[51b73452]3170
3171multi_array_dimension:
[c0a33d2]3172 '[' push assignment_expression pop ']'
3173 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3174 | '[' push '*' pop ']' // C99
[4d51835]3175 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3176 | multi_array_dimension '[' push assignment_expression pop ']'
3177 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3178 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3179 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3180 ;
[51b73452]3181
[c11e31c]3182// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3183// identifier to which the type applies, e.g.:
3184//
[c0aa336]3185// int f( int ); // not handled here
3186// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3187// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3188// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3189//
[de62360d]3190// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3191// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3192// special meaning of parenthesis around a typedef name:
3193//
3194// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3195// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3196// not as redundant parentheses around the identifier."
3197//
3198// For example:
3199//
3200// typedef float T;
3201// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3202// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3203// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3204// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3205//
3206// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3207// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3208// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3209// functions.
[51b73452]3210
3211abstract_parameter_declarator:
[4d51835]3212 abstract_parameter_ptr
[b6b3c42]3213 | '&' MUTEX attribute_list_opt
3214 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3215 | abstract_parameter_array attribute_list_opt
[1db21619]3216 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3217 | abstract_parameter_function attribute_list_opt
[1db21619]3218 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3219 ;
[51b73452]3220
3221abstract_parameter_ptr:
[dd51906]3222 ptrref_operator
[ce8c12f]3223 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3224 | ptrref_operator type_qualifier_list
[ce8c12f]3225 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3226 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3227 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3228 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3229 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3230 | '(' abstract_parameter_ptr ')' attribute_list_opt
3231 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3232 ;
[51b73452]3233
3234abstract_parameter_array:
[4d51835]3235 array_parameter_dimension
3236 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3237 { $$ = $2->addArray( $4 ); }
3238 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3239 { $$ = $2->addArray( $4 ); }
3240 | '(' abstract_parameter_array ')' // redundant parenthesis
3241 { $$ = $2; }
3242 ;
[51b73452]3243
3244abstract_parameter_function:
[c0a33d2]3245 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3246 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3247 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3248 { $$ = $2->addParamList( $6 ); }
[4d51835]3249 | '(' abstract_parameter_function ')' // redundant parenthesis
3250 { $$ = $2; }
3251 ;
[51b73452]3252
3253array_parameter_dimension:
[4d51835]3254 // Only the first dimension can be empty or have qualifiers.
3255 array_parameter_1st_dimension
3256 | array_parameter_1st_dimension multi_array_dimension
3257 { $$ = $1->addArray( $2 ); }
3258 | multi_array_dimension
3259 ;
[51b73452]3260
[c11e31c]3261// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3262//
[de62360d]3263// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3264// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3265
3266array_parameter_1st_dimension:
[2871210]3267 '[' ']'
[4d51835]3268 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3269 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3270 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3271 { $$ = DeclarationNode::newVarArray( $3 ); }
3272 | '[' push type_qualifier_list pop ']'
3273 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3274 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3275 | '[' push type_qualifier_list assignment_expression pop ']'
3276 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3277 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3278 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3279 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3280 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3281 ;
[b87a5ed]3282
[c0aa336]3283// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3284//
[c0aa336]3285// struct S {
3286// int;
3287// int *;
3288// int [10];
3289// int (*)();
3290// };
[51b73452]3291
3292variable_abstract_declarator:
[4d51835]3293 variable_abstract_ptr
3294 | variable_abstract_array attribute_list_opt
[1db21619]3295 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3296 | variable_abstract_function attribute_list_opt
[1db21619]3297 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3298 ;
[51b73452]3299
3300variable_abstract_ptr:
[dd51906]3301 ptrref_operator
[ce8c12f]3302 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3303 | ptrref_operator type_qualifier_list
[ce8c12f]3304 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3305 | ptrref_operator variable_abstract_declarator
[ce8c12f]3306 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3307 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3308 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3309 | '(' variable_abstract_ptr ')' attribute_list_opt
3310 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3311 ;
[51b73452]3312
3313variable_abstract_array:
[4d51835]3314 array_dimension
3315 | '(' variable_abstract_ptr ')' array_dimension
3316 { $$ = $2->addArray( $4 ); }
3317 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3318 { $$ = $2->addArray( $4 ); }
3319 | '(' variable_abstract_array ')' // redundant parenthesis
3320 { $$ = $2; }
3321 ;
[51b73452]3322
3323variable_abstract_function:
[c0a33d2]3324 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3325 { $$ = $2->addParamList( $6 ); }
[4d51835]3326 | '(' variable_abstract_function ')' // redundant parenthesis
3327 { $$ = $2; }
3328 ;
[b87a5ed]3329
[de62360d]3330// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3331// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3332
[c0aa336]3333cfa_identifier_parameter_declarator_tuple: // CFA
3334 cfa_identifier_parameter_declarator_no_tuple
3335 | cfa_abstract_tuple
3336 | type_qualifier_list cfa_abstract_tuple
[4d51835]3337 { $$ = $2->addQualifiers( $1 ); }
3338 ;
[b87a5ed]3339
[c0aa336]3340cfa_identifier_parameter_declarator_no_tuple: // CFA
3341 cfa_identifier_parameter_ptr
3342 | cfa_identifier_parameter_array
[4d51835]3343 ;
[b87a5ed]3344
[c0aa336]3345cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3346 // No SUE declaration in parameter list.
3347 ptrref_operator type_specifier_nobody
[ce8c12f]3348 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3349 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3350 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3351 | ptrref_operator cfa_abstract_function
[ce8c12f]3352 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3353 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3354 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3355 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3356 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3357 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3358 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3359 ;
[b87a5ed]3360
[c0aa336]3361cfa_identifier_parameter_array: // CFA
[de62360d]3362 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3363 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3364 '[' ']' type_specifier_nobody
[2871210]3365 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3366 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3367 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3368 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3369 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3370 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3371 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3372 | multi_array_dimension type_specifier_nobody
[4d51835]3373 { $$ = $2->addNewArray( $1 ); }
[9059213]3374
[c0aa336]3375 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3376 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3377 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3378 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3379 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3380 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3381 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3382 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3383 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3384 { $$ = $2->addNewArray( $1 ); }
3385 ;
[51b73452]3386
[c0aa336]3387cfa_array_parameter_1st_dimension:
[c0a33d2]3388 '[' push type_qualifier_list '*' pop ']' // remaining C99
3389 { $$ = DeclarationNode::newVarArray( $3 ); }
3390 | '[' push type_qualifier_list assignment_expression pop ']'
3391 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3392 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3393 // declaration_qualifier_list must be used because of shift/reduce conflict with
3394 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3395 // appear in this context.
[c0a33d2]3396 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3397 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3398 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3399 ;
[b87a5ed]3400
[de62360d]3401// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3402// identifier to which the type applies, e.g.:
[c11e31c]3403//
[b87a5ed]3404// [int] f( int ); // abstract variable parameter; no parameter name specified
3405// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3406//
3407// These rules need LR(3):
3408//
[c0aa336]3409// cfa_abstract_tuple identifier_or_type_name
[40de461]3410// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3411//
3412// since a function return type can be syntactically identical to a tuple type:
3413//
[b87a5ed]3414// [int, int] t;
3415// [int, int] f( int );
[c11e31c]3416//
[2871210]3417// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3418// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3419// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3420// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3421
[c0aa336]3422cfa_abstract_declarator_tuple: // CFA
3423 cfa_abstract_tuple
3424 | type_qualifier_list cfa_abstract_tuple
[4d51835]3425 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3426 | cfa_abstract_declarator_no_tuple
[4d51835]3427 ;
[b87a5ed]3428
[c0aa336]3429cfa_abstract_declarator_no_tuple: // CFA
3430 cfa_abstract_ptr
3431 | cfa_abstract_array
[4d51835]3432 ;
[b87a5ed]3433
[c0aa336]3434cfa_abstract_ptr: // CFA
[dd51906]3435 ptrref_operator type_specifier
[ce8c12f]3436 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3437 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3438 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3439 | ptrref_operator cfa_abstract_function
[ce8c12f]3440 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3441 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3442 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3443 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3444 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3445 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3446 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3447 ;
[b87a5ed]3448
[c0aa336]3449cfa_abstract_array: // CFA
[de62360d]3450 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3451 // empty (void) function return type.
[2871210]3452 '[' ']' type_specifier
[2298f728]3453 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3454 | '[' ']' multi_array_dimension type_specifier
[2298f728]3455 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3456 | multi_array_dimension type_specifier
3457 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3458 | '[' ']' cfa_abstract_ptr
[2298f728]3459 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3460 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3461 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3462 | multi_array_dimension cfa_abstract_ptr
[4d51835]3463 { $$ = $2->addNewArray( $1 ); }
3464 ;
[b87a5ed]3465
[c0aa336]3466cfa_abstract_tuple: // CFA
[c0a33d2]3467 '[' push cfa_abstract_parameter_list pop ']'
3468 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3469 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3470 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3471 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3472 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3473 ;
[b87a5ed]3474
[c0aa336]3475cfa_abstract_function: // CFA
[40de461]3476// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3477// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3478 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3479 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3480 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3481 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3482 ;
[b87a5ed]3483
[de62360d]3484// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3485// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3486//
[de62360d]3487// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3488// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3489//
3490// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3491// prototype-format parameter type declarators) is an obsolescent feature."
3492//
[de62360d]3493// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3494// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3495
[c11e31c]3496//************************* MISCELLANEOUS ********************************
[51b73452]3497
[b87a5ed]3498comma_opt: // redundant comma
[4d51835]3499 // empty
3500 | ','
3501 ;
[51b73452]3502
[5a51798]3503default_initializer_opt:
[4d51835]3504 // empty
[58dd019]3505 { $$ = nullptr; }
[4d51835]3506 | '=' assignment_expression
3507 { $$ = $2; }
3508 ;
[51b73452]3509
3510%%
[a1c9ddd]3511
[c11e31c]3512// ----end of grammar----
[51b73452]3513
[c11e31c]3514// Local Variables: //
[b87a5ed]3515// mode: c++ //
[de62360d]3516// tab-width: 4 //
[c11e31c]3517// compile-command: "make install" //
3518// End: //
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