source: src/Parser/parser.yy@ 9af0fe2d

ADT arm-eh ast-experimental enum forall-pointer-decay jacob/cs343-translation new-ast-unique-expr pthread-emulation qualifiedEnum
Last change on this file since 9af0fe2d was 6a99803, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago

add parsing for new array declaration and subscript

  • Property mode set to 100644
File size: 139.2 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
[6a99803]12// Last Modified On : Wed Feb 3 18:30:12 2021
13// Update Count : 4700
[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%{
[ec3f9c8]43#define YYDEBUG_LEXER_TEXT( yylval ) // lexer loads this up each time
[b87a5ed]44#define YYDEBUG 1 // get the pretty debugging code to compile
[201aeb9]45#define YYERROR_VERBOSE // more information in syntax errors
[51b73452]46
47#undef __GNUC_MINOR__
48
49#include <cstdio>
50#include <stack>
[9ed4f94]51using namespace std;
52
[312029a]53#include "SynTree/Declaration.h"
[51b73452]54#include "ParseNode.h"
[984dce6]55#include "TypedefTable.h"
[1db21619]56#include "TypeData.h"
[07de76b]57#include "SynTree/LinkageSpec.h"
[9ed4f94]58#include "Common/SemanticError.h" // error_str
[513e165]59#include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
[51b73452]60
[cbaee0d]61extern DeclarationNode * parseTree;
[8b7ee09]62extern LinkageSpec::Spec linkage;
[0da3e2c]63extern TypedefTable typedefTable;
64
[408ab79]65stack<LinkageSpec::Spec> linkageStack;
[7bf7fb9]66
[15697ff]67bool appendStr( string & to, string & from ) {
68 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]69 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]70 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
71 // easier to let the C compiler handle this case.
72 //
73 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
74 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
75 // i.e., u"a" U"b" L"c" is disallowed.
76
77 if ( from[0] != '"' ) { // encoding ?
78 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]79 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]80 yyerror( "non-matching string encodings for string-literal concatenation" );
81 return false; // parse error, must call YYERROR in action
[ea0c5e3]82 } else if ( from[1] == '8' ) {
83 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]84 } // if
85 } else {
[ea0c5e3]86 if ( from[1] == '8' ) { // move encoding to start
87 to = "u8" + to;
88 from.erase( 0, 1 ); // remove 2nd encoding
89 } else {
90 to = from[0] + to;
91 } // if
[15697ff]92 } // if
93 from.erase( 0, 1 ); // remove 2nd encoding
94 } // if
95 to += " " + from; // concatenated into single string
96 return true;
[7bf7fb9]97} // appendStr
[c0aa336]98
99DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) {
100 // distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__.
101 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier );
[6d01d89]102 for ( cur = dynamic_cast<DeclarationNode *>( cur->get_next() ); cur != nullptr; cur = dynamic_cast<DeclarationNode *>( cur->get_next() ) ) {
[c0aa336]103 cl->cloneBaseType( cur );
104 } // for
105 declList->addType( cl );
106 return declList;
107} // distAttr
108
109void distExt( DeclarationNode * declaration ) {
110 // distribute EXTENSION across all declarations
111 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
112 iter->set_extension( true );
113 } // for
114} // distExt
[fdca7c6]115
[e07caa2]116void distInl( DeclarationNode * declaration ) {
117 // distribute EXTENSION across all declarations
118 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
119 iter->set_inLine( true );
120 } // for
121} // distInl
122
[4c3ee8d]123void distQual( DeclarationNode * declaration, DeclarationNode * qualifiers ) {
[284da8c]124 // distribute qualifiers across all non-variable declarations in a distribution statemement
[4c3ee8d]125 for ( DeclarationNode * iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[284da8c]126 // SKULLDUGGERY: Distributions are parsed inside out, so qualifiers are added to declarations inside out. Since
127 // addQualifiers appends to the back of the list, the forall clauses are in the wrong order (right to left). To
128 // get the qualifiers in the correct order and still use addQualifiers (otherwise, 90% of addQualifiers has to
129 // be copied to add to front), the appropriate forall pointers are interchanged before calling addQualifiers.
130 DeclarationNode * clone = qualifiers->clone();
131 if ( qualifiers->type ) { // forall clause ? (handles SC)
132 if ( iter->type->kind == TypeData::Aggregate ) { // struct/union ?
133 swap( clone->type->forall, iter->type->aggregate.params );
134 iter->addQualifiers( clone );
135 } else if ( iter->type->kind == TypeData::AggregateInst && iter->type->aggInst.aggregate->aggregate.body ) { // struct/union ?
136 // Create temporary node to hold aggregate, call addQualifiers as above, then put nodes back together.
137 DeclarationNode newnode;
138 swap( newnode.type, iter->type->aggInst.aggregate );
139 swap( clone->type->forall, newnode.type->aggregate.params );
140 newnode.addQualifiers( clone );
141 swap( newnode.type, iter->type->aggInst.aggregate );
142 } else if ( iter->type->kind == TypeData::Function ) { // routines ?
143 swap( clone->type->forall, iter->type->forall );
144 iter->addQualifiers( clone );
145 } // if
146 } else { // just SC qualifiers
147 iter->addQualifiers( clone );
148 } // if
[4c3ee8d]149 } // for
[284da8c]150 delete qualifiers;
151} // distQual
[4c3ee8d]152
[c38ae92]153// There is an ambiguity for inline generic-routine return-types and generic routines.
154// forall( otype T ) struct S { int i; } bar( T ) {}
155// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
156// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]157// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
158// forall( otype T ) struct S { int T; };
159// forall( otype W ) bar( W ) {}
[c38ae92]160
161void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]162 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]163 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
164 declSpec->type->aggregate.params = nullptr;
165 } // if
166} // rebindForall
167
[60a8062]168string * build_postfix_name( string * name ) {
169 *name = string("__postfix_func_") + *name;
170 return name;
[dc7db63]171} // build_postfix_name
172
[f7e4db27]173DeclarationNode * fieldDecl( DeclarationNode * typeSpec, DeclarationNode * fieldList ) {
174 if ( ! fieldList ) { // field declarator ?
[553772b]175 if ( ! ( typeSpec->type && (typeSpec->type->kind == TypeData::Aggregate || typeSpec->type->kind == TypeData::Enum) ) ) {
[f7e4db27]176 stringstream ss;
177 typeSpec->type->print( ss );
178 SemanticWarning( yylloc, Warning::SuperfluousDecl, ss.str().c_str() );
179 return nullptr;
180 } // if
181 fieldList = DeclarationNode::newName( nullptr );
182 } // if
183 return distAttr( typeSpec, fieldList ); // mark all fields in list
184} // fieldDecl
185
[cc22003]186ForCtrl * forCtrl( ExpressionNode * type, string * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]187 ConstantExpr * constant = dynamic_cast<ConstantExpr *>(type->expr.get());
[0982a05]188 if ( constant && (constant->get_constant()->get_value() == "0" || constant->get_constant()->get_value() == "1") ) {
[ec3f9c8]189 type = new ExpressionNode( new CastExpr( maybeMoveBuild<Expression>(type), new BasicType( Type::Qualifiers(), BasicType::SignedInt ) ) );
[0982a05]190 } // if
[f271bdd]191 return new ForCtrl(
[5753b33]192 distAttr( DeclarationNode::newTypeof( type, true ), DeclarationNode::newName( index )->addInitializer( new InitializerNode( start ) ) ),
[2d2df9f]193 // NULL comp/inc => leave blank
194 comp ? new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index ) ) ), comp ) ) : 0,
195 inc ? new ExpressionNode( build_binary_val( compop == OperKinds::LThan || compop == OperKinds::LEThan ? // choose += or -= for upto/downto
196 OperKinds::PlusAssn : OperKinds::MinusAssn, new ExpressionNode( build_varref( new string( *index ) ) ), inc ) ) : 0 );
[f271bdd]197} // forCtrl
198
[f1aeede]199ForCtrl * forCtrl( ExpressionNode * type, ExpressionNode * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]200 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(index->expr.get()) ) {
[f1aeede]201 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
[1dda8de]202 } else if ( CommaExpr * commaExpr = dynamic_cast<CommaExpr *>(index->expr.get()) ) {
[6d01d89]203 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(commaExpr->arg1 ) ) {
204 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
205 } else {
[3ca7ef3]206 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[6d01d89]207 } // if
[f1aeede]208 } else {
[3ca7ef3]209 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[f1aeede]210 } // if
[f271bdd]211} // forCtrl
212
[fc20514]213bool forall = false, yyy = false; // aggregate have one or more forall qualifiers ?
[d48e529]214
[201aeb9]215// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
216#define YYLLOC_DEFAULT(Cur, Rhs, N) \
217if ( N ) { \
218 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
219 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
220 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
221 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
222 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
223} else { \
224 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
225 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
226 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
227}
[51b73452]228%}
229
[15697ff]230%define parse.error verbose
231
[201aeb9]232// Types declaration for productions
[0982a05]233%union {
[a67b60e]234 Token tok;
235 ParseNode * pn;
236 ExpressionNode * en;
237 DeclarationNode * decl;
[312029a]238 AggregateDecl::Aggregate aggKey;
[07de76b]239 TypeDecl::Kind tclass;
[a67b60e]240 StatementNode * sn;
[135b431]241 WaitForStmt * wfs;
[e612146c]242 Expression * constant;
[f271bdd]243 IfCtrl * ifctl;
244 ForCtrl * fctl;
[cc22003]245 enum OperKinds compop;
[a67b60e]246 LabelNode * label;
247 InitializerNode * in;
248 OperKinds op;
249 std::string * str;
250 bool flag;
[307a732]251 CatchStmt::Kind catch_kind;
[d807ca28]252 GenericExpr * genexpr;
[a67b60e]253}
254
[c11e31c]255//************************* TERMINAL TOKENS ********************************
[51b73452]256
[c11e31c]257// keywords
[51b73452]258%token TYPEDEF
[a7c90d4]259%token EXTERN STATIC AUTO REGISTER
260%token THREADLOCAL // C11
261%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
262%token NORETURN // C11
[51b73452]263%token CONST VOLATILE
[b87a5ed]264%token RESTRICT // C99
[a7c90d4]265%token ATOMIC // C11
[1528a2c]266%token FORALL MUTEX VIRTUAL COERCE // CFA
[72457b6]267%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]268%token BOOL COMPLEX IMAGINARY // C99
[f1da02c]269%token INT128 UINT128 uuFLOAT80 uuFLOAT128 // GCC
[e15853c]270%token uFLOAT16 uFLOAT32 uFLOAT32X uFLOAT64 uFLOAT64X uFLOAT128 // GCC
[72457b6]271%token ZERO_T ONE_T // CFA
272%token VALIST // GCC
[f673c13c]273%token AUTO_TYPE // GCC
[ee27df2]274%token TYPEOF BASETYPEOF LABEL // GCC
[51b73452]275%token ENUM STRUCT UNION
[c27fb59]276%token EXCEPTION // CFA
[553772b]277%token GENERATOR COROUTINE MONITOR THREAD // CFA
[a7c90d4]278%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[5721a6d]279%token SIZEOF OFFSETOF
[25744d2]280// %token RESUME // CFA
281%token SUSPEND // CFA
[b87a5ed]282%token ATTRIBUTE EXTENSION // GCC
[51b73452]283%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[114014c]284%token CHOOSE DISABLE ENABLE FALLTHRU FALLTHROUGH TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT WITH WHEN WAITFOR // CFA
[b87a5ed]285%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
[a7c90d4]286%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
[51b73452]287
[c11e31c]288// names and constants: lexer differentiates between identifier and typedef names
[b87a5ed]289%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname
[5b2edbc]290%token<tok> TIMEOUT WOR
[1b29996]291%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
[61fc4f6]292%token<tok> DIRECTIVE
[1b29996]293// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
294// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
295// converted into the tuple index (.)(1). e.g., 3.x
[930f69e]296%token<tok> FLOATING_DECIMALconstant FLOATING_FRACTIONconstant FLOATINGconstant
[51b73452]297
[c11e31c]298// multi-character operators
[b87a5ed]299%token ARROW // ->
300%token ICR DECR // ++ --
301%token LS RS // << >>
302%token LE GE EQ NE // <= >= == !=
303%token ANDAND OROR // && ||
304%token ELLIPSIS // ...
305
[e5f2a67]306%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
[b87a5ed]307%token PLUSassign MINUSassign // += -=
308%token LSassign RSassign // <<= >>=
309%token ANDassign ERassign ORassign // &= ^= |=
[51b73452]310
[d69f4bb4]311%token ErangeUpEq ErangeDown ErangeDownEq // ~= -~ -~=
[e7aed49]312%token ATassign // @=
[097e2b0]313
[033ff37]314%type<tok> identifier
315%type<tok> identifier_or_type_name attr_name
[5b2edbc]316%type<tok> quasi_keyword
[ab57786]317%type<constant> string_literal
318%type<str> string_literal_list
[51b73452]319
[c11e31c]320// expressions
[d1625f8]321%type<en> constant
[b87a5ed]322%type<en> tuple tuple_expression_list
[9706554]323%type<op> ptrref_operator unary_operator assignment_operator
[b87a5ed]324%type<en> primary_expression postfix_expression unary_expression
[4a063df]325%type<en> cast_expression_list cast_expression exponential_expression multiplicative_expression additive_expression
[994d080]326%type<en> shift_expression relational_expression equality_expression
327%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
328%type<en> logical_AND_expression logical_OR_expression
329%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]330%type<en> comma_expression comma_expression_opt
[5a51798]331%type<en> argument_expression_list_opt argument_expression default_initializer_opt
[936e9f4]332%type<ifctl> if_control_expression
[6d01d89]333%type<fctl> for_control_expression for_control_expression_list
[cc22003]334%type<compop> inclexcl
[51b73452]335%type<en> subrange
[c0aa336]336%type<decl> asm_name_opt
[67d4e37]337%type<en> asm_operands_opt asm_operands_list asm_operand
[7f5566b]338%type<label> label_list
[d1625f8]339%type<en> asm_clobbers_list_opt
[7f5566b]340%type<flag> asm_volatile_opt
[cbce272]341%type<en> handler_predicate_opt
[67d4e37]342%type<genexpr> generic_association generic_assoc_list
[51b73452]343
[c11e31c]344// statements
[9bd6105]345%type<sn> statement labeled_statement compound_statement
346%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]347%type<sn> selection_statement if_statement
[6a276a0]348%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]349%type<en> case_value
350%type<sn> case_clause case_value_list case_label case_label_list
[8b47e50]351%type<sn> iteration_statement jump_statement
[9bd6105]352%type<sn> expression_statement asm_statement
[c453ac4]353%type<sn> with_statement
354%type<en> with_clause_opt
[51d6d6a]355%type<sn> exception_statement handler_clause finally_clause
356%type<catch_kind> handler_key
[b6b3c42]357%type<sn> mutex_statement
[9bd6105]358%type<en> when_clause when_clause_opt waitfor timeout
[135b431]359%type<sn> waitfor_statement
[51d6d6a]360%type<wfs> waitfor_clause
[51b73452]361
[c11e31c]362// declarations
[c0aa336]363%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
364%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
365%type<decl> abstract_parameter_declaration
[51b73452]366
[e307e12]367%type<aggKey> aggregate_key aggregate_data aggregate_control
[d0ffed1]368%type<decl> aggregate_type aggregate_type_nobody
[51b73452]369
[9997fee]370%type<decl> assertion assertion_list assertion_list_opt
[51b73452]371
[25744d2]372%type<en> bit_subrange_size_opt bit_subrange_size
[51b73452]373
[84d58c5]374%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[51b73452]375
[4040425]376%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]377
378%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]379%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]380
[d0ffed1]381%type<decl> elaborated_type elaborated_type_nobody
[51b73452]382
[d0ffed1]383%type<decl> enumerator_list enum_type enum_type_nobody
[51b73452]384%type<en> enumerator_value_opt
385
[3d56d15b]386%type<decl> external_definition external_definition_list external_definition_list_opt
387
388%type<decl> exception_declaration
[51b73452]389
[e07caa2]390%type<decl> field_declaration_list_opt field_declaration field_declaring_list_opt field_declarator field_abstract_list_opt field_abstract
[679e644]391%type<en> field field_name_list field_name fraction_constants_opt
[51b73452]392
[4d51835]393%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]394
[d3bc0ad]395%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
396%type<decl> identifier_list
[51b73452]397
[c0aa336]398%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
399%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
400%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]401
[c0aa336]402%type<decl> cfa_array_parameter_1st_dimension
[51b73452]403
[679e644]404%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list cfa_field_abstract_list
[c0aa336]405%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]406
[c0aa336]407%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
408%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]409
[40de461]410%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]411
[c0aa336]412%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]413
[b9be000b]414%type<decl> c_declaration static_assert
[c0aa336]415%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]416%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]417
[2a8427c6]418%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]419
[2871210]420%type<decl> paren_identifier paren_type
[51b73452]421
[0da3e2c]422%type<decl> storage_class storage_class_list
[51b73452]423
[d0ffed1]424%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]425
[5a51798]426%type<tclass> type_class new_type_class
[51b73452]427%type<decl> type_declarator type_declarator_name type_declaring_list
428
[84d58c5]429%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
430%type<decl> typedef typedef_declaration typedef_expression
[c0aa336]431
432%type<decl> variable_type_redeclarator type_ptr type_array type_function
433
434%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]435
[84d58c5]436%type<decl> type type_no_function
437%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]438
[284da8c]439%type<en> type_parameters_opt type_list
[51b73452]440
[a16a7ec]441%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[408ab79]442%type<decl> type_specifier type_specifier_nobody enum_specifier_nobody
[51b73452]443
[c0aa336]444%type<decl> variable_declarator variable_ptr variable_array variable_function
445%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]446
[408ab79]447%type<decl> attribute_list_opt attribute_list attribute_opt attribute attribute_name_list attribute_name
[1db21619]448
[c11e31c]449// initializers
[7fdb94e1]450%type<in> initializer initializer_list_opt initializer_opt
[51b73452]451
[c11e31c]452// designators
[51b73452]453%type<en> designator designator_list designation
454
455
[65d6de4]456// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
457// .---------. matches IF '(' comma_expression ')' statement . (reduce)
458// if ( C ) S1 else S2
459// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]460// Similar issues exit with the waitfor statement.
[51b73452]461
[1efa1e1]462// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
463// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[5b2edbc]464%precedence THEN // rule precedence for IF/WAITFOR statement
465%precedence WOR // token precedence for start of WOR in WAITFOR statement
466%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
467%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
[51b73452]468
[65d6de4]469// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
470// forall( otype T ) struct Foo { T v; };
471// .-----. matches pointer to function returning a generic (which is impossible without a type)
472// Foo ( *fp )( int );
473// `---' matches start of TYPEGENname '('
[fc20514]474// must be:
[a16a7ec]475// Foo( int ) ( *fp )( int );
[fc20514]476// The same problem occurs here:
477// forall( otype T ) struct Foo { T v; } ( *fp )( int );
478// must be:
479// forall( otype T ) struct Foo { T v; } ( int ) ( *fp )( int );
[65d6de4]480
481// Order of these lines matters (low-to-high precedence).
482%precedence TYPEGENname
[284da8c]483%precedence '}'
[65d6de4]484%precedence '('
485
[c786e1d]486// %precedence RESUME
487// %precedence '{'
488// %precedence ')'
489
[f38e7d7]490%locations // support location tracking for error messages
[930f69e]491
[b87a5ed]492%start translation_unit // parse-tree root
[51b73452]493
494%%
[c11e31c]495//************************* Namespace Management ********************************
496
[3d26610]497// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
498// which are lexically identical.
[c11e31c]499//
[3d26610]500// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
501// foo f; // to allow it to appear in this context
[c11e31c]502//
[3d26610]503// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
504// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
505// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
506// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
507// must be distinguished by the lexical scanner.
[c11e31c]508//
[3d26610]509// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
510// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
511// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
512// each context that introduces a name scope, a new level is created in the type table and that level is popped on
513// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
514// This requires distinguishing between type names that are local to the current declaration scope and those that
515// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]516//
[3d26610]517// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
518// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
519// around the list separator.
520//
521// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
522// push pop push pop
[51b73452]523
524push:
[ab57786]525 { typedefTable.enterScope(); }
[4d51835]526 ;
[51b73452]527
528pop:
[ab57786]529 { typedefTable.leaveScope(); }
[4d51835]530 ;
[51b73452]531
[c11e31c]532//************************* CONSTANTS ********************************
[51b73452]533
534constant:
[de62360d]535 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]536 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]537 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
538 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]539 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
540 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]541 ;
[51b73452]542
[5b2edbc]543quasi_keyword: // CFA
544 TIMEOUT
545 | WOR
546 ;
547
[033ff37]548identifier:
[4d51835]549 IDENTIFIER
[5b2edbc]550 | quasi_keyword
[679e644]551 | '@' // CFA
552 { Token tok = { new string( DeclarationNode::anonymous.newName() ), yylval.tok.loc }; $$ = tok; }
[4d51835]553 ;
[51b73452]554
[ab57786]555string_literal:
556 string_literal_list { $$ = build_constantStr( *$1 ); }
557 ;
558
[b87a5ed]559string_literal_list: // juxtaposed strings are concatenated
[ab57786]560 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]561 | string_literal_list STRINGliteral
562 {
[15697ff]563 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]564 delete $2; // allocated by lexer
[ab57786]565 $$ = $1; // conversion from tok to str
[7bf7fb9]566 }
[4d51835]567 ;
[51b73452]568
[c11e31c]569//************************* EXPRESSIONS ********************************
[51b73452]570
571primary_expression:
[4d51835]572 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]573 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]574 | quasi_keyword
575 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[1b29996]576 | tuple
[4d51835]577 | '(' comma_expression ')'
578 { $$ = $2; }
579 | '(' compound_statement ')' // GCC, lambda expression
[408ab79]580 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast<CompoundStmt *>(maybeMoveBuild<Statement>($2) ) ) ); }
[033ff37]581 | type_name '.' identifier // CFA, nested type
[203c667]582 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[679e644]583 | type_name '.' '[' field_name_list ']' // CFA, nested type / tuple field selector
[203c667]584 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]585 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]586 {
587 // add the missing control expression to the GenericExpr and return it
588 $5->control = maybeMoveBuild<Expression>( $3 );
589 $$ = new ExpressionNode( $5 );
590 }
[c786e1d]591 // | RESUME '(' comma_expression ')'
592 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
593 // | RESUME '(' comma_expression ')' compound_statement
594 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
[24c3b67]595 ;
596
597generic_assoc_list: // C11
[d807ca28]598 generic_association
[24c3b67]599 | generic_assoc_list ',' generic_association
[d807ca28]600 {
601 // steal the association node from the singleton and delete the wrapper
602 $1->associations.splice($1->associations.end(), $3->associations);
603 delete $3;
604 $$ = $1;
605 }
[24c3b67]606 ;
607
608generic_association: // C11
609 type_no_function ':' assignment_expression
[d807ca28]610 {
611 // create a GenericExpr wrapper with one association pair
[408ab79]612 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>( $3 ) } } );
[d807ca28]613 }
[24c3b67]614 | DEFAULT ':' assignment_expression
[408ab79]615 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>( $3 ) } } ); }
[4d51835]616 ;
[51b73452]617
618postfix_expression:
[4d51835]619 primary_expression
[6a99803]620 | postfix_expression '[' assignment_expression ',' comma_expression ']'
621 // { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, new ExpressionNode( build_binary_val( OperKinds::Index, $3, $5 ) ) ) ); }
622 { SemanticError( yylloc, "New array subscript is currently unimplemented." ); $$ = nullptr; }
[7fdb94e1]623 | postfix_expression '[' assignment_expression ']'
[c6b1105]624 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]625 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
626 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
627 // equivalent to the old x[i,j].
[7fdb94e1]628 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[cbbd8fd7]629 | postfix_expression '{' argument_expression_list_opt '}' // CFA, constructor call
[bd3d9e4]630 {
631 Token fn;
632 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
633 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
634 }
[cbbd8fd7]635 | postfix_expression '(' argument_expression_list_opt ')'
[d1625f8]636 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[948fdef]637 | postfix_expression '`' identifier // CFA, postfix call
[60a8062]638 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]639 | constant '`' identifier // CFA, postfix call
[60a8062]640 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]641 | string_literal '`' identifier // CFA, postfix call
[60a8062]642 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), new ExpressionNode( $1 ) ) ); }
[033ff37]643 | postfix_expression '.' identifier
[d1625f8]644 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]645 | postfix_expression '.' INTEGERconstant // CFA, tuple index
646 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]647 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
648 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[679e644]649 | postfix_expression '.' '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]650 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[e307e12]651 | postfix_expression '.' aggregate_control
[312029a]652 { $$ = new ExpressionNode( build_keyword_cast( $3, $1 ) ); }
[033ff37]653 | postfix_expression ARROW identifier
[ee27df2]654 { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); }
[861799c7]655 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
656 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[679e644]657 | postfix_expression ARROW '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]658 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]659 | postfix_expression ICR
[d1625f8]660 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]661 | postfix_expression DECR
[d1625f8]662 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]663 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]664 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]665 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]666 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[cbbd8fd7]667 | '^' primary_expression '{' argument_expression_list_opt '}' // CFA, destructor call
[097e2b0]668 {
[9706554]669 Token fn;
[ecb27a7]670 fn.str = new string( "^?{}" ); // location undefined
671 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]672 }
[4d51835]673 ;
[51b73452]674
[cbbd8fd7]675argument_expression_list_opt:
[757ffed]676 // empty
677 { $$ = nullptr; }
678 | argument_expression
[cbbd8fd7]679 | argument_expression_list_opt ',' argument_expression
[4a063df]680 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]681 ;
[51b73452]682
683argument_expression:
[757ffed]684 '@' // CFA, default parameter
[679e644]685 { SemanticError( yylloc, "Default parameter for argument is currently unimplemented." ); $$ = nullptr; }
686 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]687 | assignment_expression
688 ;
[b87a5ed]689
[679e644]690field_name_list: // CFA, tuple field selector
[4d51835]691 field
[4a063df]692 | field_name_list ',' field { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]693 ;
[b87a5ed]694
695field: // CFA, tuple field selector
[faddbd8]696 field_name
[930f69e]697 | FLOATING_DECIMALconstant field
698 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[679e644]699 | FLOATING_DECIMALconstant '[' field_name_list ']'
[7fdb94e1]700 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]701 | field_name '.' field
[bf32bb8]702 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]703 | field_name '.' '[' field_name_list ']'
[7fdb94e1]704 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]705 | field_name ARROW field
[bf32bb8]706 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]707 | field_name ARROW '[' field_name_list ']'
[7fdb94e1]708 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]709 ;
[51b73452]710
[faddbd8]711field_name:
[df22130]712 INTEGERconstant fraction_constants_opt
[8780e30]713 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]714 | FLOATINGconstant fraction_constants_opt
[8780e30]715 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[033ff37]716 | identifier fraction_constants_opt
[4cb935e]717 {
[84d58c5]718 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
719 }
[1b29996]720 ;
721
[df22130]722fraction_constants_opt:
[1b29996]723 // empty
[8780e30]724 { $$ = nullptr; }
[df22130]725 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]726 {
[930f69e]727 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]728 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
729 }
[faddbd8]730 ;
731
[51b73452]732unary_expression:
[4d51835]733 postfix_expression
[c6b1105]734 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
735 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]736 | constant
[ab57786]737 | string_literal
[d1625f8]738 { $$ = new ExpressionNode( $1 ); }
[4d51835]739 | EXTENSION cast_expression // GCC
[e04ef3a]740 { $$ = $2->set_extension( true ); }
[c6b1105]741 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
742 // { * X; } // dereference X
743 // { * int X; } // CFA declaration of pointer to int
[51e076e]744 | ptrref_operator cast_expression // CFA
[9706554]745 {
746 switch ( $1 ) {
[d9e2280]747 case OperKinds::AddressOf:
[408ab79]748 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) );
[9706554]749 break;
[d9e2280]750 case OperKinds::PointTo:
[d1625f8]751 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]752 break;
[5809461]753 case OperKinds::And:
[408ab79]754 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) ) );
[5809461]755 break;
[9706554]756 default:
757 assert( false );
758 }
759 }
[4d51835]760 | unary_operator cast_expression
[d1625f8]761 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]762 | ICR unary_expression
[d1625f8]763 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]764 | DECR unary_expression
[d1625f8]765 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]766 | SIZEOF unary_expression
[408ab79]767 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[84d58c5]768 | SIZEOF '(' type_no_function ')'
[db70fe4]769 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]770 | ALIGNOF unary_expression // GCC, variable alignment
[408ab79]771 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[a2e0687]772 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]773 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[033ff37]774 | OFFSETOF '(' type_no_function ',' identifier ')'
[d1625f8]775 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[4d51835]776 ;
[51b73452]777
[dd51906]778ptrref_operator:
[d9e2280]779 '*' { $$ = OperKinds::PointTo; }
780 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]781 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]782 | ANDAND { $$ = OperKinds::And; }
[dd51906]783 ;
784
[51b73452]785unary_operator:
[d9e2280]786 '+' { $$ = OperKinds::UnPlus; }
787 | '-' { $$ = OperKinds::UnMinus; }
788 | '!' { $$ = OperKinds::Neg; }
789 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]790 ;
[51b73452]791
792cast_expression:
[4d51835]793 unary_expression
[84d58c5]794 | '(' type_no_function ')' cast_expression
[d1625f8]795 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[e307e12]796 | '(' aggregate_control '&' ')' cast_expression // CFA
[312029a]797 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[fae90d5f]798 | '(' VIRTUAL ')' cast_expression // CFA
[408ab79]799 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]800 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[408ab79]801 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $5 ), maybeMoveBuildType( $3 ) ) ); }
[1528a2c]802 | '(' RETURN type_no_function ')' cast_expression // CFA
803 { SemanticError( yylloc, "Return cast is currently unimplemented." ); $$ = nullptr; }
804 | '(' COERCE type_no_function ')' cast_expression // CFA
805 { SemanticError( yylloc, "Coerce cast is currently unimplemented." ); $$ = nullptr; }
806 | '(' qualifier_cast_list ')' cast_expression // CFA
807 { SemanticError( yylloc, "Qualifier cast is currently unimplemented." ); $$ = nullptr; }
[84d58c5]808// | '(' type_no_function ')' tuple
[1b29996]809// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]810 ;
[51b73452]811
[1528a2c]812qualifier_cast_list:
813 cast_modifier type_qualifier_name
814 | cast_modifier MUTEX
815 | qualifier_cast_list cast_modifier type_qualifier_name
816 | qualifier_cast_list cast_modifier MUTEX
817 ;
818
819cast_modifier:
820 '-'
821 | '+'
822 ;
823
[994d080]824exponential_expression:
[4d51835]825 cast_expression
[994d080]826 | exponential_expression '\\' cast_expression
[e5f2a67]827 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]828 ;
829
830multiplicative_expression:
831 exponential_expression
832 | multiplicative_expression '*' exponential_expression
[d1625f8]833 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]834 | multiplicative_expression '/' exponential_expression
[d1625f8]835 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]836 | multiplicative_expression '%' exponential_expression
[d1625f8]837 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]838 ;
[51b73452]839
840additive_expression:
[4d51835]841 multiplicative_expression
842 | additive_expression '+' multiplicative_expression
[d1625f8]843 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]844 | additive_expression '-' multiplicative_expression
[d1625f8]845 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]846 ;
[51b73452]847
848shift_expression:
[4d51835]849 additive_expression
850 | shift_expression LS additive_expression
[d1625f8]851 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]852 | shift_expression RS additive_expression
[d1625f8]853 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]854 ;
[51b73452]855
856relational_expression:
[4d51835]857 shift_expression
858 | relational_expression '<' shift_expression
[d1625f8]859 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]860 | relational_expression '>' shift_expression
[d1625f8]861 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]862 | relational_expression LE shift_expression
[d1625f8]863 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]864 | relational_expression GE shift_expression
[d1625f8]865 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]866 ;
[51b73452]867
868equality_expression:
[4d51835]869 relational_expression
870 | equality_expression EQ relational_expression
[d1625f8]871 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]872 | equality_expression NE relational_expression
[d1625f8]873 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]874 ;
[51b73452]875
876AND_expression:
[4d51835]877 equality_expression
878 | AND_expression '&' equality_expression
[d1625f8]879 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]880 ;
[51b73452]881
882exclusive_OR_expression:
[4d51835]883 AND_expression
884 | exclusive_OR_expression '^' AND_expression
[d1625f8]885 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]886 ;
[51b73452]887
888inclusive_OR_expression:
[4d51835]889 exclusive_OR_expression
890 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]891 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]892 ;
[51b73452]893
894logical_AND_expression:
[4d51835]895 inclusive_OR_expression
896 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]897 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]898 ;
[51b73452]899
900logical_OR_expression:
[4d51835]901 logical_AND_expression
902 | logical_OR_expression OROR logical_AND_expression
[d1625f8]903 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]904 ;
[51b73452]905
906conditional_expression:
[4d51835]907 logical_OR_expression
908 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]909 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]910 // FIX ME: computes $1 twice
[4d51835]911 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]912 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]913 ;
[51b73452]914
915constant_expression:
[4d51835]916 conditional_expression
917 ;
[51b73452]918
919assignment_expression:
[4d51835]920 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
921 conditional_expression
922 | unary_expression assignment_operator assignment_expression
[9867cdb]923 {
[25744d2]924// if ( $2 == OperKinds::AtAssn ) {
925// SemanticError( yylloc, "C @= assignment is currently unimplemented." ); $$ = nullptr;
926// } else {
[9867cdb]927 $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) );
[25744d2]928// } // if
[9867cdb]929 }
[7fdb94e1]930 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]931 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]932 ;
[51b73452]933
934assignment_expression_opt:
[4d51835]935 // empty
[d1625f8]936 { $$ = nullptr; }
[4d51835]937 | assignment_expression
938 ;
[b87a5ed]939
[9706554]940assignment_operator:
[d9e2280]941 '=' { $$ = OperKinds::Assign; }
[a839867]942 | ATassign { $$ = OperKinds::AtAssn; }
[e5f2a67]943 | EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]944 | MULTassign { $$ = OperKinds::MulAssn; }
945 | DIVassign { $$ = OperKinds::DivAssn; }
946 | MODassign { $$ = OperKinds::ModAssn; }
947 | PLUSassign { $$ = OperKinds::PlusAssn; }
948 | MINUSassign { $$ = OperKinds::MinusAssn; }
949 | LSassign { $$ = OperKinds::LSAssn; }
950 | RSassign { $$ = OperKinds::RSAssn; }
951 | ANDassign { $$ = OperKinds::AndAssn; }
952 | ERassign { $$ = OperKinds::ERAssn; }
953 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]954 ;
[9706554]955
[b87a5ed]956tuple: // CFA, tuple
[de62360d]957 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]958 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]959// '[' ']'
960// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]961// | '[' push assignment_expression pop ']'
[1b29996]962// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]963 '[' ',' tuple_expression_list ']'
964 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
965 | '[' push assignment_expression pop ',' tuple_expression_list ']'
[4a063df]966 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $6 ) ) )); }
[4d51835]967 ;
[51b73452]968
969tuple_expression_list:
[0a6d8204]970 assignment_expression
971 | '@' // CFA
972 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
973 | tuple_expression_list ',' assignment_expression
[4a063df]974 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[0a6d8204]975 | tuple_expression_list ',' '@'
976 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
[4d51835]977 ;
[51b73452]978
979comma_expression:
[4d51835]980 assignment_expression
[9706554]981 | comma_expression ',' assignment_expression
[408ab79]982 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]983 ;
[51b73452]984
985comma_expression_opt:
[4d51835]986 // empty
[58dd019]987 { $$ = nullptr; }
[4d51835]988 | comma_expression
989 ;
[51b73452]990
[c11e31c]991//*************************** STATEMENTS *******************************
[51b73452]992
993statement:
[4d51835]994 labeled_statement
995 | compound_statement
[c0a33d2]996 | expression_statement
[4d51835]997 | selection_statement
998 | iteration_statement
999 | jump_statement
[8b47e50]1000 | with_statement
[b6b3c42]1001 | mutex_statement
[5b2edbc]1002 | waitfor_statement
[4d51835]1003 | exception_statement
[2a8427c6]1004 | enable_disable_statement
[fae90d5f]1005 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]1006 | asm_statement
[61fc4f6]1007 | DIRECTIVE
[6d539f83]1008 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]1009 ;
[51b73452]1010
1011labeled_statement:
[033ff37]1012 // labels cannot be identifiers 0 or 1
[44a81853]1013 identifier_or_type_name ':' attribute_list_opt statement
[6d01d89]1014 { $$ = $4->add_label( $1, $3 ); }
[4d51835]1015 ;
[51b73452]1016
1017compound_statement:
[4d51835]1018 '{' '}'
[e82aa9df]1019 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]1020 | '{' push
[51b1202]1021 local_label_declaration_opt // GCC, local labels
[9bd6105]1022 statement_decl_list // C99, intermix declarations and statements
[c0aa336]1023 pop '}'
[35718a9]1024 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]1025 ;
[b87a5ed]1026
[9bd6105]1027statement_decl_list: // C99
1028 statement_decl
[35718a9]1029 | statement_decl_list statement_decl
[6d01d89]1030 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1031 ;
[51b73452]1032
[9bd6105]1033statement_decl:
[4d51835]1034 declaration // CFA, new & old style declarations
[e82aa9df]1035 { $$ = new StatementNode( $1 ); }
[4d51835]1036 | EXTENSION declaration // GCC
[6d01d89]1037 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[4d51835]1038 | function_definition
[e82aa9df]1039 { $$ = new StatementNode( $1 ); }
[c0aa336]1040 | EXTENSION function_definition // GCC
[6d01d89]1041 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[35718a9]1042 | statement
[4d51835]1043 ;
[51b73452]1044
[9bd6105]1045statement_list_nodecl:
[4d51835]1046 statement
[9bd6105]1047 | statement_list_nodecl statement
[6d01d89]1048 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1049 ;
[51b73452]1050
1051expression_statement:
[4d51835]1052 comma_expression_opt ';'
[e82aa9df]1053 { $$ = new StatementNode( build_expr( $1 ) ); }
[4d51835]1054 ;
[51b73452]1055
1056selection_statement:
[3d26610]1057 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1058 // the inherent S/R conflict with THEN/ELSE.
1059 push if_statement pop
1060 { $$ = $2; }
[4cc585b]1061 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1062 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1063 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1064 {
[6a276a0]1065 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1066 // The semantics of the declaration list is changed to include associated initialization, which is performed
1067 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1068 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1069 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1070 // statement.
[a7741435]1071 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1072 }
[4d51835]1073 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1074 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1075 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1076 {
[6a276a0]1077 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1078 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1079 }
[4d51835]1080 ;
[b87a5ed]1081
[3d26610]1082if_statement:
1083 IF '(' if_control_expression ')' statement %prec THEN
1084 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1085 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[3d26610]1086 | IF '(' if_control_expression ')' statement ELSE statement
[a025ea8]1087 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1088 ;
1089
[936e9f4]1090if_control_expression:
[35718a9]1091 comma_expression
[f271bdd]1092 { $$ = new IfCtrl( nullptr, $1 ); }
[35718a9]1093 | c_declaration // no semi-colon
[f271bdd]1094 { $$ = new IfCtrl( $1, nullptr ); }
[35718a9]1095 | cfa_declaration // no semi-colon
[f271bdd]1096 { $$ = new IfCtrl( $1, nullptr ); }
[6d49ea3]1097 | declaration comma_expression // semi-colon separated
[f271bdd]1098 { $$ = new IfCtrl( $1, $2 ); }
[936e9f4]1099 ;
1100
[de62360d]1101// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1102// clause allows a list of values and subranges.
[b87a5ed]1103
1104case_value: // CFA
[4d51835]1105 constant_expression { $$ = $1; }
1106 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[408ab79]1107 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1108 | subrange // CFA, subrange
1109 ;
[b87a5ed]1110
1111case_value_list: // CFA
[e82aa9df]1112 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1113 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1114 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1115 ;
[b87a5ed]1116
1117case_label: // CFA
[8688ce1]1118 CASE case_value_list ':' { $$ = $2; }
[e82aa9df]1119 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1120 // A semantic check is required to ensure only one default clause per switch/choose statement.
1121 ;
[b87a5ed]1122
[6a276a0]1123//label_list_opt:
1124// // empty
1125// | identifier_or_type_name ':'
1126// | label_list_opt identifier_or_type_name ':'
1127// ;
1128
[b87a5ed]1129case_label_list: // CFA
[4d51835]1130 case_label
[1d4580a]1131 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1132 ;
[b87a5ed]1133
1134case_clause: // CFA
[a025ea8]1135 case_label_list statement { $$ = $1->append_last_case( maybe_build_compound( $2 ) ); }
[4d51835]1136 ;
[b87a5ed]1137
1138switch_clause_list_opt: // CFA
[4d51835]1139 // empty
[58dd019]1140 { $$ = nullptr; }
[4d51835]1141 | switch_clause_list
1142 ;
[b87a5ed]1143
1144switch_clause_list: // CFA
[9bd6105]1145 case_label_list statement_list_nodecl
[e82aa9df]1146 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1147 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1148 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1149 ;
[b87a5ed]1150
[51b73452]1151iteration_statement:
[401e61f]1152 WHILE '(' push if_control_expression ')' statement pop
[a025ea8]1153 { $$ = new StatementNode( build_while( $4, maybe_build_compound( $6 ) ) ); }
[f271bdd]1154 | WHILE '(' ')' statement // CFA => while ( 1 )
[a025ea8]1155 { $$ = new StatementNode( build_while( new IfCtrl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) ); }
[4d51835]1156 | DO statement WHILE '(' comma_expression ')' ';'
[a025ea8]1157 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
[f271bdd]1158 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[a025ea8]1159 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) ); }
[6d01d89]1160 | FOR '(' push for_control_expression_list ')' statement pop
[a025ea8]1161 { $$ = new StatementNode( build_for( $4, maybe_build_compound( $6 ) ) ); }
[f1aeede]1162 | FOR '(' ')' statement // CFA => for ( ;; )
[a025ea8]1163 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[4d51835]1164 ;
[51b73452]1165
[6d01d89]1166for_control_expression_list:
1167 for_control_expression
1168 | for_control_expression_list ':' for_control_expression
[67d4e37]1169 // ForCtrl + ForCtrl:
1170 // init + init => multiple declaration statements that are hoisted
1171 // condition + condition => (expression) && (expression)
1172 // change + change => (expression), (expression)
1173 {
1174 $1->init->set_last( $3->init );
1175 if ( $1->condition ) {
1176 if ( $3->condition ) {
1177 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1178 } // if
1179 } else $1->condition = $3->condition;
1180 if ( $1->change ) {
1181 if ( $3->change ) {
1182 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1183 } // if
1184 } else $1->change = $3->change;
1185 $$ = $1;
1186 }
[6d01d89]1187 ;
1188
[51b73452]1189for_control_expression:
[6d01d89]1190 ';' comma_expression_opt ';' comma_expression_opt
1191 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1192 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1193 { $$ = new ForCtrl( $1, $3, $5 ); }
1194 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1195 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1196
[6d01d89]1197 | comma_expression // CFA
[f1aeede]1198 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1199 OperKinds::LThan, $1->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1200 | '=' comma_expression // CFA
[9853d9b0]1201 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1202 OperKinds::LEThan, $2->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1203 | comma_expression inclexcl comma_expression // CFA
[ee27df2]1204 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1205 | comma_expression inclexcl comma_expression '~' comma_expression // CFA
[cc22003]1206 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[cbbd8fd7]1207 | comma_expression ';' // CFA
1208 { $$ = forCtrl( new ExpressionNode( build_constantInteger( *new string( "0u" ) ) ), $1, nullptr, OperKinds::LThan, nullptr, nullptr ); }
[f1aeede]1209 | comma_expression ';' comma_expression // CFA
1210 { $$ = forCtrl( $3, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1211 OperKinds::LThan, $3->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1212 | comma_expression ';' '=' comma_expression // CFA
[332bd33]1213 { $$ = forCtrl( $4, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1214 OperKinds::LEThan, $4->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1215 | comma_expression ';' comma_expression inclexcl comma_expression // CFA
[f1aeede]1216 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1217 | comma_expression ';' comma_expression inclexcl comma_expression '~' comma_expression // CFA
[f1aeede]1218 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, $7 ); }
[67d4e37]1219
1220 // There is a S/R conflicit if ~ and -~ are factored out.
1221 | comma_expression ';' comma_expression '~' '@' // CFA
1222 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1223 | comma_expression ';' comma_expression ErangeDown '@' // CFA
1224 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[2d2df9f]1225 | comma_expression ';' comma_expression '~' '@' '~' comma_expression // CFA
1226 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, $7 ); }
[1b54b54]1227 | comma_expression ';' comma_expression ErangeDown '@' '~' comma_expression // CFA
1228 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, $7 ); }
[2d2df9f]1229 | comma_expression ';' comma_expression '~' '@' '~' '@' // CFA
1230 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, nullptr ); }
[d1625f8]1231 ;
[51b73452]1232
[cc22003]1233inclexcl:
1234 '~'
1235 { $$ = OperKinds::LThan; }
[d69f4bb4]1236 | ErangeUpEq
[cc22003]1237 { $$ = OperKinds::LEThan; }
[d69f4bb4]1238 | ErangeDown
1239 { $$ = OperKinds::GThan; }
1240 | ErangeDownEq
1241 { $$ = OperKinds::GEThan; }
[cc22003]1242 ;
1243
[51b73452]1244jump_statement:
[44a81853]1245 GOTO identifier_or_type_name ';'
[ab57786]1246 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1247 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1248 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1249 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1250 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1251 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
[ec3f9c8]1252 | fall_through_name ';' // CFA
[6a276a0]1253 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
[ec3f9c8]1254 | fall_through_name identifier_or_type_name ';' // CFA
[6a276a0]1255 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1256 | fall_through_name DEFAULT ';' // CFA
1257 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1258 | CONTINUE ';'
[de62360d]1259 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1260 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1261 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1262 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1263 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1264 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1265 | BREAK ';'
[de62360d]1266 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1267 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1268 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1269 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1270 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1271 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1272 | RETURN comma_expression_opt ';'
[e82aa9df]1273 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1274 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1275 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1276 | SUSPEND ';'
[427854b]1277 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1278 | SUSPEND compound_statement
[427854b]1279 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1280 | SUSPEND COROUTINE ';'
[427854b]1281 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1282 | SUSPEND COROUTINE compound_statement
[427854b]1283 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1284 | SUSPEND GENERATOR ';'
[427854b]1285 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1286 | SUSPEND GENERATOR compound_statement
[427854b]1287 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1288 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1289 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1290 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1291 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1292 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1293 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1294 ;
[51b73452]1295
[6a276a0]1296fall_through_name: // CFA
1297 FALLTHRU
1298 | FALLTHROUGH
1299 ;
1300
[8b47e50]1301with_statement:
[5b2edbc]1302 WITH '(' tuple_expression_list ')' statement
[a378ca7]1303 {
1304 $$ = new StatementNode( build_with( $3, $5 ) );
1305 }
[5b2edbc]1306 ;
1307
[b6b3c42]1308// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1309mutex_statement:
[cbbd8fd7]1310 MUTEX '(' argument_expression_list_opt ')' statement
[fae90d5f]1311 { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; }
[b6b3c42]1312 ;
1313
[51d6d6a]1314when_clause:
[6a276a0]1315 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1316 ;
1317
[5b2edbc]1318when_clause_opt:
1319 // empty
[135b431]1320 { $$ = nullptr; }
[51d6d6a]1321 | when_clause
[5b2edbc]1322 ;
1323
1324waitfor:
[713926ca]1325 WAITFOR '(' cast_expression ')'
1326 { $$ = $3; }
[cbbd8fd7]1327// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1328// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1329 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1330 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1331 ;
1332
1333cast_expression_list:
1334 cast_expression
1335 | cast_expression_list ',' cast_expression
[a491a3c]1336 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1337 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1338 ;
1339
1340timeout:
[6a276a0]1341 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1342 ;
1343
1344waitfor_clause:
[51d6d6a]1345 when_clause_opt waitfor statement %prec THEN
[a025ea8]1346 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1347 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1348 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1349 | when_clause_opt timeout statement %prec THEN
[a025ea8]1350 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1351 | when_clause_opt ELSE statement
[a025ea8]1352 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[51d6d6a]1353 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
[713926ca]1354 | when_clause_opt timeout statement WOR ELSE statement
1355 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1356 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1357 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1358 ;
1359
1360waitfor_statement:
[51d6d6a]1361 when_clause_opt waitfor statement %prec THEN
[135b431]1362 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1363 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1364 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1365 ;
1366
[51b73452]1367exception_statement:
[cfaabe2c]1368 TRY compound_statement handler_clause
[e82aa9df]1369 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1370 | TRY compound_statement finally_clause
[e82aa9df]1371 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1372 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1373 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1374 ;
[51b73452]1375
1376handler_clause:
[098f7ff]1377 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1378 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1379 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1380 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1381 ;
1382
1383handler_predicate_opt:
[7fdb94e1]1384 // empty
[cbce272]1385 { $$ = nullptr; }
[6a276a0]1386 | ';' conditional_expression { $$ = $2; }
[307a732]1387 ;
1388
1389handler_key:
[6a276a0]1390 CATCH { $$ = CatchStmt::Terminate; }
1391 | CATCHRESUME { $$ = CatchStmt::Resume; }
[4d51835]1392 ;
[51b73452]1393
1394finally_clause:
[6a276a0]1395 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1396 ;
[51b73452]1397
1398exception_declaration:
[d0ffed1]1399 // No SUE declaration in parameter list.
1400 type_specifier_nobody
1401 | type_specifier_nobody declarator
[c0a33d2]1402 { $$ = $2->addType( $1 ); }
[d0ffed1]1403 | type_specifier_nobody variable_abstract_declarator
[4d51835]1404 { $$ = $2->addType( $1 ); }
[033ff37]1405 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1406 { $$ = $1->addName( $2 ); }
[c0aa336]1407 | cfa_abstract_declarator_tuple // CFA
[4d51835]1408 ;
[51b73452]1409
[2a8427c6]1410enable_disable_statement:
1411 enable_disable_key identifier_list compound_statement
1412 ;
1413
1414enable_disable_key:
1415 ENABLE
1416 | DISABLE
1417 ;
1418
[51b73452]1419asm_statement:
[ab57786]1420 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1421 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1422 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1423 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1424 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1425 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1426 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1427 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1428 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1429 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1430 ;
1431
1432asm_volatile_opt: // GCC
1433 // empty
1434 { $$ = false; }
1435 | VOLATILE
1436 { $$ = true; }
[4d51835]1437 ;
[b87a5ed]1438
1439asm_operands_opt: // GCC
[4d51835]1440 // empty
[58dd019]1441 { $$ = nullptr; } // use default argument
[4d51835]1442 | asm_operands_list
1443 ;
[b87a5ed]1444
1445asm_operands_list: // GCC
[4d51835]1446 asm_operand
1447 | asm_operands_list ',' asm_operand
[4a063df]1448 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1449 ;
[b87a5ed]1450
1451asm_operand: // GCC
[ab57786]1452 string_literal '(' constant_expression ')'
[408ab79]1453 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1454 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1455 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1456 ;
1457
[4e06c1e]1458asm_clobbers_list_opt: // GCC
[7f5566b]1459 // empty
[58dd019]1460 { $$ = nullptr; } // use default argument
[ab57786]1461 | string_literal
[d1625f8]1462 { $$ = new ExpressionNode( $1 ); }
[ab57786]1463 | asm_clobbers_list_opt ',' string_literal
[4a063df]1464 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1465 ;
[b87a5ed]1466
[7f5566b]1467label_list:
[033ff37]1468 identifier
[ab57786]1469 {
1470 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1471 delete $1; // allocated by lexer
1472 }
[033ff37]1473 | label_list ',' identifier
[ab57786]1474 {
1475 $$ = $1; $1->labels.push_back( *$3 );
1476 delete $3; // allocated by lexer
1477 }
[4d51835]1478 ;
[51b73452]1479
[c11e31c]1480//******************************* DECLARATIONS *********************************
[51b73452]1481
[b87a5ed]1482declaration_list_opt: // used at beginning of switch statement
[35718a9]1483 // empty
[58dd019]1484 { $$ = nullptr; }
[4d51835]1485 | declaration_list
1486 ;
[51b73452]1487
1488declaration_list:
[4d51835]1489 declaration
[35718a9]1490 | declaration_list declaration
1491 { $$ = $1->appendList( $2 ); }
[4d51835]1492 ;
[51b73452]1493
[407bde5]1494KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1495 // empty
[58dd019]1496 { $$ = nullptr; }
[35718a9]1497 | KR_parameter_list
[4d51835]1498 ;
[51b73452]1499
[35718a9]1500KR_parameter_list:
[4cc585b]1501 push c_declaration pop ';'
1502 { $$ = $2; }
[35718a9]1503 | KR_parameter_list push c_declaration pop ';'
[4d51835]1504 { $$ = $1->appendList( $3 ); }
1505 ;
[b87a5ed]1506
[51b1202]1507local_label_declaration_opt: // GCC, local label
[4d51835]1508 // empty
[51b1202]1509 | local_label_declaration_list
[4d51835]1510 ;
[b87a5ed]1511
[51b1202]1512local_label_declaration_list: // GCC, local label
1513 LABEL local_label_list ';'
1514 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1515 ;
[b87a5ed]1516
[51b1202]1517local_label_list: // GCC, local label
[033ff37]1518 identifier_or_type_name
1519 | local_label_list ',' identifier_or_type_name
[4d51835]1520 ;
[b87a5ed]1521
[936e9f4]1522declaration: // old & new style declarations
[35718a9]1523 c_declaration ';'
1524 | cfa_declaration ';' // CFA
[b47b827]1525 | static_assert // C11
[4d51835]1526 ;
[b87a5ed]1527
[b9be000b]1528static_assert:
1529 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1530 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1531 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1532 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1533
[de62360d]1534// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1535// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1536// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1537// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1538// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1539// block, but cannot be mixed within a specific declaration.
[c11e31c]1540//
[b87a5ed]1541// CFA C
1542// [10] int x; int x[10]; // array of 10 integers
1543// [10] * char y; char *y[10]; // array of 10 pointers to char
1544
[c0aa336]1545cfa_declaration: // CFA
[4cc585b]1546 cfa_variable_declaration
1547 | cfa_typedef_declaration
1548 | cfa_function_declaration
1549 | type_declaring_list
[2501ae5]1550 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1551 | trait_specifier
[4d51835]1552 ;
[b87a5ed]1553
[c0aa336]1554cfa_variable_declaration: // CFA
1555 cfa_variable_specifier initializer_opt
[7fdb94e1]1556 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1557 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1558 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1559 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1560 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1561 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1562 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1563 ;
[b87a5ed]1564
[c0aa336]1565cfa_variable_specifier: // CFA
[de62360d]1566 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1567 // storage-class
[c0aa336]1568 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1569 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1570 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1571 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1572 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1573 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1574 ;
[b87a5ed]1575
[c0aa336]1576cfa_function_declaration: // CFA
1577 cfa_function_specifier
1578 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1579 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1580 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1581 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1582 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1583 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1584 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1585 {
[481115f]1586 // Append the return type at the start (left-hand-side) to each identifier in the list.
1587 DeclarationNode * ret = new DeclarationNode;
1588 ret->type = maybeClone( $1->type->base );
[40de461]1589 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1590 }
1591 ;
[b87a5ed]1592
[c0aa336]1593cfa_function_specifier: // CFA
[40de461]1594// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1595// {
1596// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1597// }
[40de461]1598// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1599// {
1600// typedefTable.setNextIdentifier( *$5 );
1601// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1602// }
[40de461]1603// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1604// {
1605// typedefTable.setNextIdentifier( *$5 );
1606// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1607// }
1608// | '[' ']' typegen_name
1609 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1610 //
[40de461]1611 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1612 // '[' ']' type_specifier
1613 //
[2871210]1614 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1615 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1616 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1617 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1618 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1619 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1620 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1621 ;
[b87a5ed]1622
[c0aa336]1623cfa_function_return: // CFA
[c0a33d2]1624 '[' push cfa_parameter_list pop ']'
1625 { $$ = DeclarationNode::newTuple( $3 ); }
1626 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1627 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1628 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1629 ;
[b87a5ed]1630
[c0aa336]1631cfa_typedef_declaration: // CFA
1632 TYPEDEF cfa_variable_specifier
[4d51835]1633 {
[ecae5860]1634 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1635 $$ = $2->addTypedef();
1636 }
[c0aa336]1637 | TYPEDEF cfa_function_specifier
[4d51835]1638 {
[ecae5860]1639 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1640 $$ = $2->addTypedef();
1641 }
[033ff37]1642 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1643 {
[ecae5860]1644 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1645 $$ = $1->appendList( $1->cloneType( $5 ) );
1646 }
1647 ;
[b87a5ed]1648
[de62360d]1649// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1650// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1651
1652typedef_declaration:
[4d51835]1653 TYPEDEF type_specifier declarator
1654 {
[ecae5860]1655 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1656 $$ = $3->addType( $2 )->addTypedef();
1657 }
1658 | typedef_declaration pop ',' push declarator
1659 {
[ecae5860]1660 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1661 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1662 }
[de62360d]1663 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1664 {
[ecae5860]1665 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1666 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1667 }
1668 | type_specifier TYPEDEF declarator
1669 {
[ecae5860]1670 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1671 $$ = $3->addType( $1 )->addTypedef();
1672 }
1673 | type_specifier TYPEDEF type_qualifier_list declarator
1674 {
[ecae5860]1675 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1676 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1677 }
1678 ;
[b87a5ed]1679
[721f17a]1680typedef_expression:
[25744d2]1681 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1682 TYPEDEF identifier '=' assignment_expression
[4d51835]1683 {
[25744d2]1684 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1685 }
[033ff37]1686 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1687 {
[25744d2]1688 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1689 }
1690 ;
[51b73452]1691
[c0aa336]1692c_declaration:
[4cc585b]1693 declaration_specifier declaring_list
[7fdb94e1]1694 { $$ = distAttr( $1, $2 ); }
[4cc585b]1695 | typedef_declaration
[25744d2]1696 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1697 | sue_declaration_specifier
[4d51835]1698 ;
[51b73452]1699
1700declaring_list:
[de62360d]1701 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1702 // storage-class
[c0aa336]1703 declarator asm_name_opt initializer_opt
[7fdb94e1]1704 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1705 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1706 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1707 ;
[b87a5ed]1708
1709declaration_specifier: // type specifier + storage class
[4d51835]1710 basic_declaration_specifier
1711 | sue_declaration_specifier
[84d58c5]1712 | type_declaration_specifier
[4d51835]1713 ;
[b87a5ed]1714
[d0ffed1]1715declaration_specifier_nobody: // type specifier + storage class - {...}
1716 // Preclude SUE declarations in restricted scopes:
1717 //
1718 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1719 //
1720 // because it is impossible to call f due to name equivalence.
1721 basic_declaration_specifier
1722 | sue_declaration_specifier_nobody
[84d58c5]1723 | type_declaration_specifier
[d0ffed1]1724 ;
1725
1726type_specifier: // type specifier
[4d51835]1727 basic_type_specifier
1728 | sue_type_specifier
[84d58c5]1729 | type_type_specifier
[4d51835]1730 ;
[b87a5ed]1731
[d0ffed1]1732type_specifier_nobody: // type specifier - {...}
1733 // Preclude SUE declarations in restricted scopes:
1734 //
1735 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1736 //
1737 // because it is impossible to call f due to name equivalence.
1738 basic_type_specifier
1739 | sue_type_specifier_nobody
[84d58c5]1740 | type_type_specifier
[d0ffed1]1741 ;
1742
[408ab79]1743enum_specifier_nobody: // type specifier - {...}
[ec3f9c8]1744 // Preclude SUE declarations in restricted scopes (see type_specifier_nobody)
[408ab79]1745 basic_type_specifier
1746 | sue_type_specifier_nobody
1747 ;
1748
[b87a5ed]1749type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1750 // empty
[58dd019]1751 { $$ = nullptr; }
[4d51835]1752 | type_qualifier_list
1753 ;
[51b73452]1754
1755type_qualifier_list:
[de62360d]1756 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1757 //
[de62360d]1758 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1759 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1760 // appeared only once.
[4d51835]1761 type_qualifier
1762 | type_qualifier_list type_qualifier
1763 { $$ = $1->addQualifiers( $2 ); }
1764 ;
[51b73452]1765
1766type_qualifier:
[4d51835]1767 type_qualifier_name
1768 | attribute
1769 ;
[51b73452]1770
1771type_qualifier_name:
[4d51835]1772 CONST
[738e304]1773 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1774 | RESTRICT
[738e304]1775 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1776 | VOLATILE
[738e304]1777 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1778 | ATOMIC
[738e304]1779 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1780 | forall
1781 ;
1782
1783forall:
[35718a9]1784 FORALL '(' type_parameter_list ')' // CFA
1785 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1786 ;
[51b73452]1787
1788declaration_qualifier_list:
[4d51835]1789 storage_class_list
[de62360d]1790 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1791 { $$ = $1->addQualifiers( $2 ); }
1792 | declaration_qualifier_list type_qualifier_list storage_class_list
1793 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1794 ;
[51b73452]1795
1796storage_class_list:
[de62360d]1797 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1798 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1799 //
[de62360d]1800 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1801 // specifiers in a declaration.
[4d51835]1802 storage_class
1803 | storage_class_list storage_class
1804 { $$ = $1->addQualifiers( $2 ); }
1805 ;
[51b73452]1806
1807storage_class:
[4d51835]1808 EXTERN
[68fe077a]1809 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1810 | STATIC
[68fe077a]1811 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1812 | AUTO
[68fe077a]1813 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1814 | REGISTER
[68fe077a]1815 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1816 | THREADLOCAL // C11
[68fe077a]1817 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1818 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1819 | INLINE // C99
[ddfd945]1820 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1821 | FORTRAN // C99
[ddfd945]1822 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1823 | NORETURN // C11
[ddfd945]1824 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1825 ;
[51b73452]1826
1827basic_type_name:
[201aeb9]1828 VOID
[4d51835]1829 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1830 | BOOL // C99
1831 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1832 | CHAR
1833 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1834 | INT
1835 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1836 | INT128
1837 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1838 | UINT128
1839 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1840 | FLOAT
1841 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1842 | DOUBLE
1843 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1844 | uuFLOAT80
1845 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1846 | uuFLOAT128
1847 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1848 | uFLOAT16
1849 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1850 | uFLOAT32
1851 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1852 | uFLOAT32X
1853 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1854 | uFLOAT64
1855 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1856 | uFLOAT64X
1857 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1858 | uFLOAT128
1859 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[4d51835]1860 | COMPLEX // C99
[5b639ee]1861 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1862 | IMAGINARY // C99
[5b639ee]1863 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1864 | SIGNED
1865 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1866 | UNSIGNED
1867 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1868 | SHORT
1869 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1870 | LONG
1871 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1872 | VALIST // GCC, __builtin_va_list
1873 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1874 | AUTO_TYPE
1875 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[4d51835]1876 ;
[51b73452]1877
1878basic_declaration_specifier:
[4d51835]1879 // A semantic check is necessary for conflicting storage classes.
1880 basic_type_specifier
1881 | declaration_qualifier_list basic_type_specifier
1882 { $$ = $2->addQualifiers( $1 ); }
1883 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1884 { $$ = $1->addQualifiers( $2 ); }
1885 | basic_declaration_specifier storage_class type_qualifier_list
1886 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1887 | basic_declaration_specifier storage_class basic_type_specifier
1888 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1889 ;
[51b73452]1890
1891basic_type_specifier:
[84d58c5]1892 direct_type
[f38e7d7]1893 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1894 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1895 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1896 ;
[51b73452]1897
[84d58c5]1898direct_type:
[4d51835]1899 basic_type_name
1900 | type_qualifier_list basic_type_name
1901 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1902 | direct_type type_qualifier
[4d51835]1903 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1904 | direct_type basic_type_name
[4d51835]1905 { $$ = $1->addType( $2 ); }
1906 ;
[51b73452]1907
[84d58c5]1908indirect_type:
[b6ad601]1909 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]1910 { $$ = $3; }
[b6ad601]1911 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]1912 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]1913 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
1914 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
1915 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
1916 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]1917 | ZERO_T // CFA
1918 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1919 | ONE_T // CFA
1920 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1921 ;
[51b73452]1922
[d0ffed1]1923sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1924 sue_type_specifier
1925 | declaration_qualifier_list sue_type_specifier
1926 { $$ = $2->addQualifiers( $1 ); }
1927 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1928 { $$ = $1->addQualifiers( $2 ); }
1929 | sue_declaration_specifier storage_class type_qualifier_list
1930 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1931 ;
[51b73452]1932
[d0ffed1]1933sue_type_specifier: // struct, union, enum + type specifier
1934 elaborated_type
[fdca7c6]1935 | type_qualifier_list
1936 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1937 elaborated_type
1938 { $$ = $3->addQualifiers( $1 ); }
[4d51835]1939 | sue_type_specifier type_qualifier
[284da8c]1940 {
1941 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
1942 $$ = $1->addQualifiers( $2 );
1943 }
[4d51835]1944 ;
[51b73452]1945
[d0ffed1]1946sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1947 sue_type_specifier_nobody
1948 | declaration_qualifier_list sue_type_specifier_nobody
1949 { $$ = $2->addQualifiers( $1 ); }
1950 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1951 { $$ = $1->addQualifiers( $2 ); }
1952 | sue_declaration_specifier_nobody storage_class type_qualifier_list
1953 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1954 ;
1955
1956sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1957 elaborated_type_nobody
1958 | type_qualifier_list elaborated_type_nobody
1959 { $$ = $2->addQualifiers( $1 ); }
1960 | sue_type_specifier_nobody type_qualifier
1961 { $$ = $1->addQualifiers( $2 ); }
1962 ;
1963
[84d58c5]1964type_declaration_specifier:
1965 type_type_specifier
1966 | declaration_qualifier_list type_type_specifier
[4d51835]1967 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1968 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]1969 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1970 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]1971 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1972 ;
[b87a5ed]1973
[84d58c5]1974type_type_specifier: // typedef types
1975 type_name
1976 | type_qualifier_list type_name
1977 { $$ = $2->addQualifiers( $1 ); }
1978 | type_type_specifier type_qualifier
1979 { $$ = $1->addQualifiers( $2 ); }
1980 ;
1981
1982type_name:
[4d51835]1983 TYPEDEFname
1984 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]1985 | '.' TYPEDEFname
[47498bd]1986 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]1987 | type_name '.' TYPEDEFname
[c5d7701]1988 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]1989 | typegen_name
1990 | '.' typegen_name
[47498bd]1991 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]1992 | type_name '.' typegen_name
[c5d7701]1993 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]1994 ;
1995
1996typegen_name: // CFA
[65d6de4]1997 TYPEGENname
1998 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1999 | TYPEGENname '(' ')'
[67cf18c]2000 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2001 | TYPEGENname '(' type_list ')'
[84d58c5]2002 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2003 ;
[51b73452]2004
[d0ffed1]2005elaborated_type: // struct, union, enum
[c0aa336]2006 aggregate_type
2007 | enum_type
[4d51835]2008 ;
[51b73452]2009
[d0ffed1]2010elaborated_type_nobody: // struct, union, enum - {...}
2011 aggregate_type_nobody
2012 | enum_type_nobody
2013 ;
2014
2015aggregate_type: // struct, union
[fc20514]2016 aggregate_key attribute_list_opt
2017 { forall = false; } // reset
2018 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2019 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[73f04fd]2020 | aggregate_key attribute_list_opt identifier
[fdca7c6]2021 {
[26ef3b2]2022 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2023 forall = false; // reset
2024 }
[284da8c]2025 '{' field_declaration_list_opt '}' type_parameters_opt
[73f04fd]2026 { $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 ); }
2027 | aggregate_key attribute_list_opt type_name
[407bde5]2028 {
[7de22b28]2029 // 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]2030 typedefTable.makeTypedef( *$3->type->leafName(), forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2031 forall = false; // reset
2032 }
[284da8c]2033 '{' field_declaration_list_opt '}' type_parameters_opt
[73f04fd]2034 { $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $8, $6, true )->addQualifiers( $2 ); }
[d0ffed1]2035 | aggregate_type_nobody
2036 ;
2037
[284da8c]2038type_parameters_opt:
2039 // empty
2040 { $$ = nullptr; } %prec '}'
2041 | '(' type_list ')'
2042 { $$ = $2; }
2043 ;
2044
[d0ffed1]2045aggregate_type_nobody: // struct, union - {...}
[73f04fd]2046 aggregate_key attribute_list_opt identifier
[84d58c5]2047 {
[26ef3b2]2048 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2049 forall = false; // reset
[84d58c5]2050 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2051 }
[73f04fd]2052 | aggregate_key attribute_list_opt type_name
[65d6de4]2053 {
[fc20514]2054 forall = false; // reset
[65d6de4]2055 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2056 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2057 // delete newFromTypeGen.
2058 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2059 $3->type->symbolic.name = nullptr;
2060 $3->type->symbolic.actuals = nullptr;
2061 delete $3;
2062 }
[4d51835]2063 ;
[51b73452]2064
2065aggregate_key:
[e307e12]2066 aggregate_data
2067 | aggregate_control
2068 ;
2069
2070aggregate_data:
[c0aa336]2071 STRUCT
[312029a]2072 { yyy = true; $$ = AggregateDecl::Struct; }
[c0aa336]2073 | UNION
[312029a]2074 { yyy = true; $$ = AggregateDecl::Union; }
[e307e12]2075 | EXCEPTION // CFA
[25744d2]2076 // { yyy = true; $$ = AggregateDecl::Exception; }
2077 { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2078 ;
2079
2080aggregate_control: // CFA
[cbbd8fd7]2081 MONITOR
2082 { yyy = true; $$ = AggregateDecl::Monitor; }
2083 | MUTEX STRUCT
2084 { yyy = true; $$ = AggregateDecl::Monitor; }
2085 | GENERATOR
[427854b]2086 { yyy = true; $$ = AggregateDecl::Generator; }
[cbbd8fd7]2087 | MUTEX GENERATOR
[aeb5d0d]2088 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2089 | COROUTINE
[312029a]2090 { yyy = true; $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2091 | MUTEX COROUTINE
[aeb5d0d]2092 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2093 | THREAD
[312029a]2094 { yyy = true; $$ = AggregateDecl::Thread; }
[cbbd8fd7]2095 | MUTEX THREAD
[aeb5d0d]2096 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2097 ;
[51b73452]2098
[7fdb94e1]2099field_declaration_list_opt:
[5d125e4]2100 // empty
[58dd019]2101 { $$ = nullptr; }
[7fdb94e1]2102 | field_declaration_list_opt field_declaration
[a7741435]2103 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2104 ;
[51b73452]2105
2106field_declaration:
[679e644]2107 type_specifier field_declaring_list_opt ';'
[f7e4db27]2108 { $$ = fieldDecl( $1, $2 ); }
[679e644]2109 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2110 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2111 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2112 {
[dea36ee]2113 if ( ! $3 ) { // field declarator ?
2114 $3 = DeclarationNode::newName( nullptr );
2115 } // if
[679a260]2116 $3->inLine = true;
[679e644]2117 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2118 distInl( $3 );
[8f91c9ae]2119 }
[e307e12]2120 | INLINE aggregate_control ';' // CFA
2121 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2122 | typedef_declaration ';' // CFA
2123 | cfa_field_declaring_list ';' // CFA, new style field declaration
2124 | EXTENSION cfa_field_declaring_list ';' // GCC
2125 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2126 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2127 { $$ = $2; } // mark all fields in list
[46fa473]2128 | cfa_typedef_declaration ';' // CFA
[b47b827]2129 | static_assert // C11
[4d51835]2130 ;
[b87a5ed]2131
[679e644]2132field_declaring_list_opt:
2133 // empty
2134 { $$ = nullptr; }
2135 | field_declarator
2136 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2137 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2138 ;
[51b73452]2139
[679e644]2140field_declarator:
[e07caa2]2141 bit_subrange_size // C special case, no field name
[4d51835]2142 { $$ = DeclarationNode::newBitfield( $1 ); }
2143 | variable_declarator bit_subrange_size_opt
[679e644]2144 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2145 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2146 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2147 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2148 { $$ = $1->addBitfield( $2 ); }
[679e644]2149 ;
2150
[e07caa2]2151field_abstract_list_opt:
2152 // empty
[dea36ee]2153 { $$ = nullptr; }
[e07caa2]2154 | field_abstract
2155 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2156 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2157 ;
2158
[e07caa2]2159field_abstract:
[f7e4db27]2160 // no bit fields
[e07caa2]2161 variable_abstract_declarator
[679e644]2162 ;
2163
2164cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2165 // bit-fields are handled by C declarations
[033ff37]2166 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2167 { $$ = $1->addName( $2 ); }
[033ff37]2168 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2169 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2170 ;
2171
2172cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2173 // bit-fields are handled by C declarations
[679e644]2174 cfa_abstract_declarator_tuple
2175 | cfa_field_abstract_list ','
2176 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2177 ;
[51b73452]2178
2179bit_subrange_size_opt:
[4d51835]2180 // empty
[58dd019]2181 { $$ = nullptr; }
[4d51835]2182 | bit_subrange_size
2183 ;
[51b73452]2184
2185bit_subrange_size:
[c786e1d]2186 ':' assignment_expression
[4d51835]2187 { $$ = $2; }
2188 ;
[51b73452]2189
[73f04fd]2190// Cannot use attribute_list_opt because of ambiguity with enum_specifier_nobody, which already parses attribute.
2191// Hence, only a single attribute is allowed after the "ENUM".
[d0ffed1]2192enum_type: // enum
[408ab79]2193 ENUM attribute_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2194 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[408ab79]2195 | ENUM attribute_opt identifier
[d0ffed1]2196 { typedefTable.makeTypedef( *$3 ); }
2197 '{' enumerator_list comma_opt '}'
2198 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[73f04fd]2199 | ENUM attribute_opt typedef // enum cannot be generic
[407bde5]2200 '{' enumerator_list comma_opt '}'
[408ab79]2201 { $$ = DeclarationNode::newEnum( $3->name, $5, true )->addQualifiers( $2 ); }
2202 | ENUM enum_specifier_nobody '{' enumerator_list comma_opt '}'
2203 // { $$ = DeclarationNode::newEnum( nullptr, $4, true ); }
2204 { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
2205 | ENUM enum_specifier_nobody declarator '{' enumerator_list comma_opt '}'
2206 // {
2207 // typedefTable.makeTypedef( *$3->name );
2208 // $$ = DeclarationNode::newEnum( nullptr, $5, true );
2209 // }
2210 { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
[d0ffed1]2211 | enum_type_nobody
2212 ;
2213
2214enum_type_nobody: // enum - {...}
[408ab79]2215 ENUM attribute_opt identifier
[45161b4d]2216 {
[c0aa336]2217 typedefTable.makeTypedef( *$3 );
[ca1a547]2218 $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 );
[45161b4d]2219 }
[73f04fd]2220 | ENUM attribute_opt type_name // enum cannot be generic
[407bde5]2221 {
2222 typedefTable.makeTypedef( *$3->type->symbolic.name );
2223 $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 );
2224 }
[4d51835]2225 ;
[51b73452]2226
2227enumerator_list:
[033ff37]2228 identifier_or_type_name enumerator_value_opt
[4d51835]2229 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[033ff37]2230 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[4d51835]2231 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
2232 ;
[51b73452]2233
2234enumerator_value_opt:
[4d51835]2235 // empty
[58dd019]2236 { $$ = nullptr; }
[408ab79]2237 // | '=' constant_expression
2238 // { $$ = $2; }
2239 | '=' initializer
2240 { $$ = $2->get_expression(); } // FIX ME: enum only deals with constant_expression
[4d51835]2241 ;
[51b73452]2242
[5a51798]2243cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2244 // empty
[2a8427c6]2245 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2246 | ELLIPSIS
[58dd019]2247 { $$ = nullptr; }
[2a8427c6]2248 | cfa_abstract_parameter_list
[c0aa336]2249 | cfa_parameter_list
[c0a33d2]2250 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2251 { $$ = $1->appendList( $5 ); }
2252 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2253 { $$ = $1->addVarArgs(); }
[c0a33d2]2254 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2255 { $$ = $1->addVarArgs(); }
2256 ;
[b87a5ed]2257
[c0aa336]2258cfa_parameter_list: // CFA
2259 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2260 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2261 cfa_parameter_declaration
[c0a33d2]2262 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2263 { $$ = $1->appendList( $5 ); }
2264 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2265 { $$ = $1->appendList( $5 ); }
2266 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2267 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2268 ;
[b87a5ed]2269
[c0aa336]2270cfa_abstract_parameter_list: // CFA, new & old style abstract
2271 cfa_abstract_parameter_declaration
[c0a33d2]2272 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2273 { $$ = $1->appendList( $5 ); }
[4d51835]2274 ;
[51b73452]2275
2276parameter_type_list_opt:
[4d51835]2277 // empty
[58dd019]2278 { $$ = nullptr; }
[2a8427c6]2279 | ELLIPSIS
2280 { $$ = nullptr; }
2281 | parameter_list
[4d51835]2282 | parameter_list pop ',' push ELLIPSIS
2283 { $$ = $1->addVarArgs(); }
2284 ;
[b87a5ed]2285
2286parameter_list: // abstract + real
[4d51835]2287 abstract_parameter_declaration
2288 | parameter_declaration
2289 | parameter_list pop ',' push abstract_parameter_declaration
2290 { $$ = $1->appendList( $5 ); }
2291 | parameter_list pop ',' push parameter_declaration
2292 { $$ = $1->appendList( $5 ); }
2293 ;
[51b73452]2294
[de62360d]2295// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2296// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2297
[c0aa336]2298cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2299 parameter_declaration
[5a51798]2300 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2301 { $$ = $1->addName( $2 ); }
[5a51798]2302 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2303 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2304 { $$ = $1->addName( $2 ); }
[5a51798]2305 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2306 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2307 | cfa_function_specifier
[4d51835]2308 ;
[b87a5ed]2309
[c0aa336]2310cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2311 abstract_parameter_declaration
[c0aa336]2312 | cfa_identifier_parameter_declarator_no_tuple
2313 | cfa_abstract_tuple
2314 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2315 | type_qualifier_list cfa_abstract_tuple
[4d51835]2316 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2317 | cfa_abstract_function
[4d51835]2318 ;
[51b73452]2319
2320parameter_declaration:
[d0ffed1]2321 // No SUE declaration in parameter list.
[5a51798]2322 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2323 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2324 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2325 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2326 ;
[51b73452]2327
2328abstract_parameter_declaration:
[5a51798]2329 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2330 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2331 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2332 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2333 ;
[51b73452]2334
[c11e31c]2335// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2336// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2337// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2338
[b87a5ed]2339identifier_list: // K&R-style parameter list => no types
[033ff37]2340 identifier
[4d51835]2341 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2342 | identifier_list ',' identifier
[4d51835]2343 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2344 ;
[51b73452]2345
[2871210]2346identifier_or_type_name:
[4d51835]2347 identifier
2348 | TYPEDEFname
2349 | TYPEGENname
2350 ;
[51b73452]2351
[84d58c5]2352type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2353 cfa_abstract_declarator_tuple // CFA
[4d51835]2354 | type_specifier
[c0aa336]2355 | type_specifier abstract_declarator
[4d51835]2356 { $$ = $2->addType( $1 ); }
2357 ;
[b87a5ed]2358
[84d58c5]2359type: // typeof, assertion
2360 type_no_function
[c0aa336]2361 | cfa_abstract_function // CFA
[4d51835]2362 ;
[51b73452]2363
2364initializer_opt:
[4d51835]2365 // empty
[58dd019]2366 { $$ = nullptr; }
[2871210]2367 | '=' initializer
2368 { $$ = $2; }
[641c3d0]2369 | '=' VOID
[3ed994e]2370 { $$ = new InitializerNode( true ); }
[097e2b0]2371 | ATassign initializer
[974906e2]2372 { $$ = $2->set_maybeConstructed( false ); }
[4d51835]2373 ;
[51b73452]2374
2375initializer:
[de62360d]2376 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2377 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2378 ;
[51b73452]2379
[7fdb94e1]2380initializer_list_opt:
[097e2b0]2381 // empty
[58dd019]2382 { $$ = nullptr; }
[097e2b0]2383 | initializer
[4d51835]2384 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2385 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2386 | initializer_list_opt ',' designation initializer
[4a063df]2387 { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2388 ;
[b87a5ed]2389
[de62360d]2390// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2391// '=' to separator the designator from the initializer value, as in:
[c11e31c]2392//
[b87a5ed]2393// int x[10] = { [1] = 3 };
[c11e31c]2394//
[de62360d]2395// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2396// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2397// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2398// shift/reduce conflicts
[51b73452]2399
2400designation:
[4d51835]2401 designator_list ':' // C99, CFA uses ":" instead of "="
[033ff37]2402 | identifier ':' // GCC, field name
[d1625f8]2403 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2404 ;
[51b73452]2405
[b87a5ed]2406designator_list: // C99
[4d51835]2407 designator
[2871210]2408 | designator_list designator
[4a063df]2409 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2410 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2411 ;
[51b73452]2412
2413designator:
[033ff37]2414 '.' identifier // C99, field name
[d1625f8]2415 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2416 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2417 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2418 { $$ = $3; }
[c0a33d2]2419 | '[' push subrange pop ']' // CFA, multiple array elements
2420 { $$ = $3; }
2421 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2422 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2423 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2424 { $$ = $4; }
[4d51835]2425 ;
[51b73452]2426
[de62360d]2427// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2428// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2429//
2430// Overloading: function, data, and operator identifiers may be overloaded.
2431//
[3ca7ef3]2432// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2433// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2434// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2435//
[de62360d]2436// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2437// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2438//
2439// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2440// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2441// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2442// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2443// on type arguments of polymorphic functions.
[c11e31c]2444
[b87a5ed]2445type_parameter_list: // CFA
[67cf18c]2446 type_parameter
2447 | type_parameter_list ',' type_parameter
[4d51835]2448 { $$ = $1->appendList( $3 ); }
2449 ;
[b87a5ed]2450
[84d58c5]2451type_initializer_opt: // CFA
2452 // empty
2453 { $$ = nullptr; }
2454 | '=' type
2455 { $$ = $2; }
2456 ;
2457
[b87a5ed]2458type_parameter: // CFA
[033ff37]2459 type_class identifier_or_type_name
[408ab79]2460 {
2461 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[ec3f9c8]2462 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated, use T " ); }
2463 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated, use T &" ); }
2464 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated, use T ..." ); }
[fd54fef]2465 }
[5a51798]2466 type_initializer_opt assertion_list_opt
[67cf18c]2467 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2468 | identifier_or_type_name new_type_class
2469 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2470 type_initializer_opt assertion_list_opt
2471 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2472 | '[' identifier_or_type_name ']'
[b66d14a]2473 {
2474 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
2475 $$ = DeclarationNode::newTypeParam( TypeDecl::ALtype, $2 );
2476 }
[5a51798]2477 // | type_specifier identifier_parameter_declarator
[9997fee]2478 | assertion_list
[07de76b]2479 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2480 ;
[b87a5ed]2481
[5a51798]2482new_type_class: // CFA
2483 // empty
2484 { $$ = TypeDecl::Otype; }
2485 | '&'
2486 { $$ = TypeDecl::Dtype; }
2487 | '*'
[b66d14a]2488 { $$ = TypeDecl::DStype; } // dtype + sized
[5a51798]2489 | ELLIPSIS
2490 { $$ = TypeDecl::Ttype; }
2491 ;
2492
[b87a5ed]2493type_class: // CFA
[4040425]2494 OTYPE
[07de76b]2495 { $$ = TypeDecl::Otype; }
[4d51835]2496 | DTYPE
[07de76b]2497 { $$ = TypeDecl::Dtype; }
[8f60f0b]2498 | FTYPE
[07de76b]2499 { $$ = TypeDecl::Ftype; }
[8f60f0b]2500 | TTYPE
[07de76b]2501 { $$ = TypeDecl::Ttype; }
[4d51835]2502 ;
[b87a5ed]2503
2504assertion_list_opt: // CFA
[4d51835]2505 // empty
[58dd019]2506 { $$ = nullptr; }
[9997fee]2507 | assertion_list
2508 ;
2509
2510assertion_list: // CFA
2511 assertion
2512 | assertion_list assertion
[3ca7ef3]2513 { $$ = $1->appendList( $2 ); }
[4d51835]2514 ;
[b87a5ed]2515
2516assertion: // CFA
[033ff37]2517 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2518 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2519 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2520 { $$ = $4; }
[35718a9]2521 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2522 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2523 ;
[b87a5ed]2524
[84d58c5]2525type_list: // CFA
2526 type
[513e165]2527 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2528 | assignment_expression
[3007c0b]2529 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $1->build()) ); $$ = nullptr; }
[84d58c5]2530 | type_list ',' type
[4a063df]2531 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2532 | type_list ',' assignment_expression
[3007c0b]2533 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $3->build()) ); $$ = nullptr; }
2534 // { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2535 ;
[b87a5ed]2536
2537type_declaring_list: // CFA
[4040425]2538 OTYPE type_declarator
[4d51835]2539 { $$ = $2; }
[4040425]2540 | storage_class_list OTYPE type_declarator
[4d51835]2541 { $$ = $3->addQualifiers( $1 ); }
2542 | type_declaring_list ',' type_declarator
[a7c90d4]2543 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2544 ;
[b87a5ed]2545
2546type_declarator: // CFA
[4d51835]2547 type_declarator_name assertion_list_opt
2548 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2549 | type_declarator_name assertion_list_opt '=' type
[4d51835]2550 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2551 ;
[b87a5ed]2552
2553type_declarator_name: // CFA
[033ff37]2554 identifier_or_type_name
[4d51835]2555 {
[ecae5860]2556 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2557 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2558 }
[033ff37]2559 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2560 {
[ecae5860]2561 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2562 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2563 }
2564 ;
[b87a5ed]2565
[4040425]2566trait_specifier: // CFA
[033ff37]2567 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2568 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2569 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2570 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2571 ;
[b87a5ed]2572
[84d58c5]2573trait_declaration_list: // CFA
[4040425]2574 trait_declaration
[13e8427]2575 | trait_declaration_list pop push trait_declaration
2576 { $$ = $1->appendList( $4 ); }
[4d51835]2577 ;
[b87a5ed]2578
[84d58c5]2579trait_declaration: // CFA
[13e8427]2580 cfa_trait_declaring_list ';'
2581 | trait_declaring_list ';'
[4d51835]2582 ;
[b87a5ed]2583
[c0aa336]2584cfa_trait_declaring_list: // CFA
2585 cfa_variable_specifier
2586 | cfa_function_specifier
2587 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2588 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2589 ;
[b87a5ed]2590
[4040425]2591trait_declaring_list: // CFA
[4d51835]2592 type_specifier declarator
[7fdb94e1]2593 { $$ = $2->addType( $1 ); }
[4040425]2594 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2595 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2596 ;
[51b73452]2597
[c11e31c]2598//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2599
2600translation_unit:
[3d56d15b]2601 // empty, input file
[4d51835]2602 | external_definition_list
[a7741435]2603 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2604 ;
[51b73452]2605
2606external_definition_list:
[35718a9]2607 push external_definition pop
2608 { $$ = $2; }
[fc20514]2609 | external_definition_list push external_definition pop
2610 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2611 ;
[51b73452]2612
2613external_definition_list_opt:
[4d51835]2614 // empty
[58dd019]2615 { $$ = nullptr; }
[3d56d15b]2616 | external_definition_list
2617 ;
2618
2619up:
[fc20514]2620 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2621 ;
2622
2623down:
2624 { typedefTable.down(); }
[4d51835]2625 ;
[51b73452]2626
2627external_definition:
[4d51835]2628 declaration
2629 | external_function_definition
[ecae5860]2630 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2631 {
2632 distExt( $2 ); // mark all fields in list
2633 $$ = $2;
2634 }
[e994912]2635 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
2636 {
[6d539f83]2637 $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) );
[e994912]2638 }
[c0aa336]2639 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2640 {
[3b8e52c]2641 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2642 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2643 }
[3d56d15b]2644 '{' up external_definition_list_opt down '}'
[4d51835]2645 {
2646 linkage = linkageStack.top();
2647 linkageStack.pop();
[3d56d15b]2648 $$ = $6;
[8e9cbb2]2649 }
[9997fee]2650 | type_qualifier_list
2651 {
[3d56d15b]2652 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2653 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2654 }
2655 '{' up external_definition_list_opt down '}' // CFA, namespace
2656 {
[4c3ee8d]2657 distQual( $5, $1 );
[fc20514]2658 forall = false;
[3d56d15b]2659 $$ = $5;
[9997fee]2660 }
2661 | declaration_qualifier_list
2662 {
[4c3ee8d]2663 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2664 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2665 }
2666 '{' up external_definition_list_opt down '}' // CFA, namespace
2667 {
[4c3ee8d]2668 distQual( $5, $1 );
[fc20514]2669 forall = false;
[3d56d15b]2670 $$ = $5;
[9997fee]2671 }
2672 | declaration_qualifier_list type_qualifier_list
2673 {
[3d56d15b]2674 if ( ($1->type && $1->type->qualifiers.val) || $2->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2675 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2676 }
[3d56d15b]2677 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2678 {
[284da8c]2679 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2680 forall = false;
[3d56d15b]2681 $$ = $6;
[9997fee]2682 }
[4d51835]2683 ;
2684
2685external_function_definition:
2686 function_definition
[de62360d]2687 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2688 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2689 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2690 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2691 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2692 | function_declarator compound_statement
[c0a33d2]2693 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2694 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2695 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2696 ;
[51b73452]2697
[8b47e50]2698with_clause_opt:
2699 // empty
[9997fee]2700 { $$ = nullptr; forall = false; }
[578e6037]2701 | WITH '(' tuple_expression_list ')'
[9997fee]2702 { $$ = $3; forall = false; }
[8b47e50]2703 ;
2704
[51b73452]2705function_definition:
[8b47e50]2706 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2707 {
[481115f]2708 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2709 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2710 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2711 $$ = $1;
[4d51835]2712 }
[8b47e50]2713 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2714 {
[c38ae92]2715 rebindForall( $1, $2 );
[7fdb94e1]2716 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2717 }
2718 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2719 {
2720 rebindForall( $1, $2 );
[5fcba14]2721 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2722 }
[a16a7ec]2723 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2724 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2725 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2726 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2727 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2728 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2729 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2730 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2731 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2732
2733 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2734 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2735 {
[c38ae92]2736 rebindForall( $1, $2 );
[5fcba14]2737 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2738 }
[a16a7ec]2739 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2740 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2741 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2742 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2743 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2744 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2745 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2746 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2747 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2748 ;
[51b73452]2749
2750declarator:
[4d51835]2751 variable_declarator
[c6b1105]2752 | variable_type_redeclarator
[4d51835]2753 | function_declarator
2754 ;
[51b73452]2755
2756subrange:
[4d51835]2757 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]2758 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]2759 ;
[b87a5ed]2760
2761asm_name_opt: // GCC
[4d51835]2762 // empty
[58dd019]2763 { $$ = nullptr; }
2764 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2765 {
2766 DeclarationNode * name = new DeclarationNode();
2767 name->asmName = $3;
2768 $$ = name->addQualifiers( $5 );
2769 }
[4d51835]2770 ;
[b87a5ed]2771
2772attribute_list_opt: // GCC
[4d51835]2773 // empty
[58dd019]2774 { $$ = nullptr; }
[4d51835]2775 | attribute_list
2776 ;
[b87a5ed]2777
2778attribute_list: // GCC
[4d51835]2779 attribute
2780 | attribute_list attribute
[1db21619]2781 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2782 ;
[b87a5ed]2783
[408ab79]2784attribute_opt:
2785 // empty
2786 { $$ = nullptr; }
2787 | attribute
2788 ;
2789
[b87a5ed]2790attribute: // GCC
[44a81853]2791 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2792 { $$ = $4; }
[4d51835]2793 ;
[b87a5ed]2794
[44a81853]2795attribute_name_list: // GCC
2796 attribute_name
2797 | attribute_name_list ',' attribute_name
[c0aa336]2798 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2799 ;
[b87a5ed]2800
[44a81853]2801attribute_name: // GCC
[4d51835]2802 // empty
[44a81853]2803 { $$ = nullptr; }
2804 | attr_name
2805 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]2806 | attr_name '(' argument_expression_list_opt ')'
[44a81853]2807 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2808 ;
[b87a5ed]2809
[44a81853]2810attr_name: // GCC
2811 IDENTIFIER
[5b2edbc]2812 | quasi_keyword
[44a81853]2813 | TYPEDEFname
2814 | TYPEGENname
[114014c]2815 | FALLTHROUGH
2816 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2817 | CONST
[9ff56e7]2818 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2819 ;
[51b73452]2820
[c11e31c]2821// ============================================================================
[de62360d]2822// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2823// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2824// in:
[c11e31c]2825//
[b87a5ed]2826// int (*f())[10] { ... };
2827// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2828//
[de62360d]2829// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2830// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2831// ============================================================================
2832
2833// ----------------------------------------------------------------------------
[de62360d]2834// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2835// to define a variable or function prototype, e.g.:
[c11e31c]2836//
[b87a5ed]2837// valid declaration invalid definition
2838// ----------------- ------------------
[4d51835]2839// int f; int f {}
2840// int *f; int *f {}
[b87a5ed]2841// int f[10]; int f[10] {}
[4d51835]2842// int (*f)(int); int (*f)(int) {}
[c11e31c]2843//
[de62360d]2844// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2845// variable_declarator and function_declarator.
[c11e31c]2846// ----------------------------------------------------------------------------
2847
[de62360d]2848// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2849// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2850
2851variable_declarator:
[4d51835]2852 paren_identifier attribute_list_opt
[1db21619]2853 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2854 | variable_ptr
2855 | variable_array attribute_list_opt
[1db21619]2856 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2857 | variable_function attribute_list_opt
[1db21619]2858 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2859 ;
[51b73452]2860
2861paren_identifier:
[4d51835]2862 identifier
[7fdb94e1]2863 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2864 | '(' paren_identifier ')' // redundant parenthesis
2865 { $$ = $2; }
2866 ;
[51b73452]2867
2868variable_ptr:
[dd51906]2869 ptrref_operator variable_declarator
[ce8c12f]2870 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2871 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2872 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2873 | '(' variable_ptr ')' attribute_list_opt
2874 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2875 ;
[51b73452]2876
2877variable_array:
[4d51835]2878 paren_identifier array_dimension
2879 { $$ = $1->addArray( $2 ); }
2880 | '(' variable_ptr ')' array_dimension
2881 { $$ = $2->addArray( $4 ); }
2882 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
2883 { $$ = $2->addArray( $4 ); }
2884 | '(' variable_array ')' // redundant parenthesis
2885 { $$ = $2; }
2886 ;
[51b73452]2887
2888variable_function:
[4d51835]2889 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2890 { $$ = $2->addParamList( $6 ); }
2891 | '(' variable_function ')' // redundant parenthesis
2892 { $$ = $2; }
2893 ;
[51b73452]2894
[c6b1105]2895// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2896// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2897// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2898
2899function_declarator:
[4d51835]2900 function_no_ptr attribute_list_opt
[1db21619]2901 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2902 | function_ptr
2903 | function_array attribute_list_opt
[1db21619]2904 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2905 ;
[51b73452]2906
2907function_no_ptr:
[4d51835]2908 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2909 { $$ = $1->addParamList( $4 ); }
2910 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2911 { $$ = $2->addParamList( $6 ); }
2912 | '(' function_no_ptr ')' // redundant parenthesis
2913 { $$ = $2; }
2914 ;
[51b73452]2915
2916function_ptr:
[dd51906]2917 ptrref_operator function_declarator
[ce8c12f]2918 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2919 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]2920 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[4d51835]2921 | '(' function_ptr ')'
2922 { $$ = $2; }
2923 ;
[51b73452]2924
2925function_array:
[4d51835]2926 '(' function_ptr ')' array_dimension
2927 { $$ = $2->addArray( $4 ); }
2928 | '(' function_array ')' multi_array_dimension // redundant parenthesis
2929 { $$ = $2->addArray( $4 ); }
2930 | '(' function_array ')' // redundant parenthesis
2931 { $$ = $2; }
2932 ;
[51b73452]2933
[c0aa336]2934// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2935//
2936// f( a, b, c ) int a, *b, c[]; {}
2937//
2938// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2939// returning arrays and functions versus pointers to arrays and functions.
[51b73452]2940
[c0aa336]2941KR_function_declarator:
2942 KR_function_no_ptr
2943 | KR_function_ptr
2944 | KR_function_array
[4d51835]2945 ;
[51b73452]2946
[c0aa336]2947KR_function_no_ptr:
[4d51835]2948 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2949 { $$ = $1->addIdList( $3 ); }
[c0a33d2]2950 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2951 { $$ = $2->addParamList( $6 ); }
[c0aa336]2952 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]2953 { $$ = $2; }
2954 ;
[51b73452]2955
[c0aa336]2956KR_function_ptr:
2957 ptrref_operator KR_function_declarator
[ce8c12f]2958 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]2959 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]2960 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2961 | '(' KR_function_ptr ')'
[4d51835]2962 { $$ = $2; }
2963 ;
[51b73452]2964
[c0aa336]2965KR_function_array:
2966 '(' KR_function_ptr ')' array_dimension
[4d51835]2967 { $$ = $2->addArray( $4 ); }
[c0aa336]2968 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2969 { $$ = $2->addArray( $4 ); }
[c0aa336]2970 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]2971 { $$ = $2; }
2972 ;
[51b73452]2973
[2871210]2974// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]2975//
[b87a5ed]2976// typedef int foo;
2977// {
2978// int foo; // redefine typedef name in new scope
2979// }
[c11e31c]2980//
[de62360d]2981// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2982// and functions versus pointers to arrays and functions.
[51b73452]2983
[c6b1105]2984variable_type_redeclarator:
[2871210]2985 paren_type attribute_list_opt
[1db21619]2986 { $$ = $1->addQualifiers( $2 ); }
[2871210]2987 | type_ptr
2988 | type_array attribute_list_opt
[1db21619]2989 { $$ = $1->addQualifiers( $2 ); }
[2871210]2990 | type_function attribute_list_opt
[1db21619]2991 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2992 ;
[51b73452]2993
[2871210]2994paren_type:
2995 typedef
[2f0a0678]2996 // hide type name in enclosing scope by variable name
[c4f68dc]2997 {
2998 // if ( ! typedefTable.existsCurr( *$1->name ) ) {
2999 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
3000 // } else {
3001 // SemanticError( yylloc, string("'") + *$1->name + "' redeclared as different kind of symbol." ); $$ = nullptr;
3002 // } // if
3003 }
[2871210]3004 | '(' paren_type ')'
[4d51835]3005 { $$ = $2; }
3006 ;
[51b73452]3007
[2871210]3008type_ptr:
[c6b1105]3009 ptrref_operator variable_type_redeclarator
[ce8c12f]3010 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3011 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3012 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3013 | '(' type_ptr ')' attribute_list_opt
[c4f68dc]3014 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]3015 ;
[51b73452]3016
[2871210]3017type_array:
3018 paren_type array_dimension
[4d51835]3019 { $$ = $1->addArray( $2 ); }
[2871210]3020 | '(' type_ptr ')' array_dimension
[4d51835]3021 { $$ = $2->addArray( $4 ); }
[2871210]3022 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3023 { $$ = $2->addArray( $4 ); }
[2871210]3024 | '(' type_array ')' // redundant parenthesis
[4d51835]3025 { $$ = $2; }
3026 ;
[51b73452]3027
[2871210]3028type_function:
3029 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3030 { $$ = $1->addParamList( $4 ); }
[2871210]3031 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3032 { $$ = $2->addParamList( $6 ); }
[2871210]3033 | '(' type_function ')' // redundant parenthesis
[4d51835]3034 { $$ = $2; }
3035 ;
[51b73452]3036
[c0aa336]3037// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3038// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3039// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3040// pointers to arrays and functions.
[51b73452]3041
3042identifier_parameter_declarator:
[4d51835]3043 paren_identifier attribute_list_opt
[1db21619]3044 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3045 | '&' MUTEX paren_identifier attribute_list_opt
3046 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3047 | identifier_parameter_ptr
3048 | identifier_parameter_array attribute_list_opt
[1db21619]3049 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3050 | identifier_parameter_function attribute_list_opt
[1db21619]3051 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3052 ;
[51b73452]3053
3054identifier_parameter_ptr:
[dd51906]3055 ptrref_operator identifier_parameter_declarator
[ce8c12f]3056 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3057 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3058 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3059 | '(' identifier_parameter_ptr ')' attribute_list_opt
3060 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3061 ;
[51b73452]3062
3063identifier_parameter_array:
[4d51835]3064 paren_identifier array_parameter_dimension
3065 { $$ = $1->addArray( $2 ); }
3066 | '(' identifier_parameter_ptr ')' array_dimension
3067 { $$ = $2->addArray( $4 ); }
3068 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3069 { $$ = $2->addArray( $4 ); }
3070 | '(' identifier_parameter_array ')' // redundant parenthesis
3071 { $$ = $2; }
3072 ;
[51b73452]3073
3074identifier_parameter_function:
[c0a33d2]3075 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3076 { $$ = $1->addParamList( $4 ); }
3077 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3078 { $$ = $2->addParamList( $6 ); }
[4d51835]3079 | '(' identifier_parameter_function ')' // redundant parenthesis
3080 { $$ = $2; }
3081 ;
[b87a5ed]3082
[de62360d]3083// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3084// e.g.:
[c11e31c]3085//
[b87a5ed]3086// typedef int foo;
[114014c]3087// forall( otype T ) struct foo;
[b87a5ed]3088// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3089//
[c0aa336]3090// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3091
[2871210]3092type_parameter_redeclarator:
[4d51835]3093 typedef attribute_list_opt
[1db21619]3094 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3095 | '&' MUTEX typedef attribute_list_opt
3096 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3097 | type_parameter_ptr
3098 | type_parameter_array attribute_list_opt
[1db21619]3099 { $$ = $1->addQualifiers( $2 ); }
[2871210]3100 | type_parameter_function attribute_list_opt
[1db21619]3101 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3102 ;
[51b73452]3103
3104typedef:
[4d51835]3105 TYPEDEFname
[7fdb94e1]3106 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3107 | TYPEGENname
[7fdb94e1]3108 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3109 ;
[51b73452]3110
[2871210]3111type_parameter_ptr:
[dd51906]3112 ptrref_operator type_parameter_redeclarator
[ce8c12f]3113 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3114 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3115 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3116 | '(' type_parameter_ptr ')' attribute_list_opt
3117 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3118 ;
[51b73452]3119
[2871210]3120type_parameter_array:
[4d51835]3121 typedef array_parameter_dimension
3122 { $$ = $1->addArray( $2 ); }
[2871210]3123 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3124 { $$ = $2->addArray( $4 ); }
3125 ;
[51b73452]3126
[2871210]3127type_parameter_function:
[c0a33d2]3128 typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3129 { $$ = $1->addParamList( $4 ); }
3130 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3131 { $$ = $2->addParamList( $6 ); }
[4d51835]3132 ;
[b87a5ed]3133
[de62360d]3134// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3135// which the type applies, e.g.:
[c11e31c]3136//
[b87a5ed]3137// sizeof( int );
[c0aa336]3138// sizeof( int * );
[b87a5ed]3139// sizeof( int [10] );
[c0aa336]3140// sizeof( int (*)() );
3141// sizeof( int () );
[c11e31c]3142//
[de62360d]3143// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3144// and functions versus pointers to arrays and functions.
[51b73452]3145
3146abstract_declarator:
[4d51835]3147 abstract_ptr
3148 | abstract_array attribute_list_opt
[1db21619]3149 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3150 | abstract_function attribute_list_opt
[1db21619]3151 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3152 ;
[51b73452]3153
3154abstract_ptr:
[dd51906]3155 ptrref_operator
[ce8c12f]3156 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3157 | ptrref_operator type_qualifier_list
[ce8c12f]3158 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3159 | ptrref_operator abstract_declarator
[ce8c12f]3160 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3161 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3162 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3163 | '(' abstract_ptr ')' attribute_list_opt
3164 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3165 ;
[51b73452]3166
3167abstract_array:
[4d51835]3168 array_dimension
3169 | '(' abstract_ptr ')' array_dimension
3170 { $$ = $2->addArray( $4 ); }
3171 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3172 { $$ = $2->addArray( $4 ); }
3173 | '(' abstract_array ')' // redundant parenthesis
3174 { $$ = $2; }
3175 ;
[51b73452]3176
3177abstract_function:
[c0a33d2]3178 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3179 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3180 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3181 { $$ = $2->addParamList( $6 ); }
[4d51835]3182 | '(' abstract_function ')' // redundant parenthesis
3183 { $$ = $2; }
3184 ;
[51b73452]3185
3186array_dimension:
[4d51835]3187 // Only the first dimension can be empty.
[2871210]3188 '[' ']'
[4d51835]3189 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3190 | '[' ']' multi_array_dimension
3191 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[6a99803]3192 | '[' push assignment_expression pop ',' comma_expression ']'
3193 { $$ = DeclarationNode::newArray( $3, 0, false )->addArray( DeclarationNode::newArray( $6, 0, false ) ); }
3194 // { SemanticError( yylloc, "New array dimension is currently unimplemented." ); $$ = nullptr; }
[4d51835]3195 | multi_array_dimension
3196 ;
[51b73452]3197
3198multi_array_dimension:
[c0a33d2]3199 '[' push assignment_expression pop ']'
3200 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3201 | '[' push '*' pop ']' // C99
[4d51835]3202 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3203 | multi_array_dimension '[' push assignment_expression pop ']'
3204 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3205 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3206 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3207 ;
[51b73452]3208
[c11e31c]3209// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3210// identifier to which the type applies, e.g.:
3211//
[c0aa336]3212// int f( int ); // not handled here
3213// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3214// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3215// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3216//
[de62360d]3217// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3218// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3219// special meaning of parenthesis around a typedef name:
3220//
3221// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3222// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3223// not as redundant parentheses around the identifier."
3224//
3225// For example:
3226//
3227// typedef float T;
3228// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3229// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3230// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3231// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3232//
3233// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3234// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3235// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3236// functions.
[51b73452]3237
3238abstract_parameter_declarator:
[4d51835]3239 abstract_parameter_ptr
[b6b3c42]3240 | '&' MUTEX attribute_list_opt
3241 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3242 | abstract_parameter_array attribute_list_opt
[1db21619]3243 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3244 | abstract_parameter_function attribute_list_opt
[1db21619]3245 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3246 ;
[51b73452]3247
3248abstract_parameter_ptr:
[dd51906]3249 ptrref_operator
[ce8c12f]3250 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3251 | ptrref_operator type_qualifier_list
[ce8c12f]3252 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3253 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3254 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3255 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3256 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3257 | '(' abstract_parameter_ptr ')' attribute_list_opt
3258 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3259 ;
[51b73452]3260
3261abstract_parameter_array:
[4d51835]3262 array_parameter_dimension
3263 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3264 { $$ = $2->addArray( $4 ); }
3265 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3266 { $$ = $2->addArray( $4 ); }
3267 | '(' abstract_parameter_array ')' // redundant parenthesis
3268 { $$ = $2; }
3269 ;
[51b73452]3270
3271abstract_parameter_function:
[c0a33d2]3272 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3273 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3274 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3275 { $$ = $2->addParamList( $6 ); }
[4d51835]3276 | '(' abstract_parameter_function ')' // redundant parenthesis
3277 { $$ = $2; }
3278 ;
[51b73452]3279
3280array_parameter_dimension:
[4d51835]3281 // Only the first dimension can be empty or have qualifiers.
3282 array_parameter_1st_dimension
3283 | array_parameter_1st_dimension multi_array_dimension
3284 { $$ = $1->addArray( $2 ); }
3285 | multi_array_dimension
3286 ;
[51b73452]3287
[c11e31c]3288// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3289//
[de62360d]3290// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3291// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3292
3293array_parameter_1st_dimension:
[2871210]3294 '[' ']'
[4d51835]3295 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3296 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3297 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3298 { $$ = DeclarationNode::newVarArray( $3 ); }
3299 | '[' push type_qualifier_list pop ']'
3300 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3301 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3302 | '[' push type_qualifier_list assignment_expression pop ']'
3303 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3304 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3305 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3306 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3307 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3308 ;
[b87a5ed]3309
[c0aa336]3310// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3311//
[c0aa336]3312// struct S {
3313// int;
3314// int *;
3315// int [10];
3316// int (*)();
3317// };
[51b73452]3318
3319variable_abstract_declarator:
[4d51835]3320 variable_abstract_ptr
3321 | variable_abstract_array attribute_list_opt
[1db21619]3322 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3323 | variable_abstract_function attribute_list_opt
[1db21619]3324 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3325 ;
[51b73452]3326
3327variable_abstract_ptr:
[dd51906]3328 ptrref_operator
[ce8c12f]3329 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3330 | ptrref_operator type_qualifier_list
[ce8c12f]3331 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3332 | ptrref_operator variable_abstract_declarator
[ce8c12f]3333 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3334 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3335 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3336 | '(' variable_abstract_ptr ')' attribute_list_opt
3337 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3338 ;
[51b73452]3339
3340variable_abstract_array:
[4d51835]3341 array_dimension
3342 | '(' variable_abstract_ptr ')' array_dimension
3343 { $$ = $2->addArray( $4 ); }
3344 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3345 { $$ = $2->addArray( $4 ); }
3346 | '(' variable_abstract_array ')' // redundant parenthesis
3347 { $$ = $2; }
3348 ;
[51b73452]3349
3350variable_abstract_function:
[c0a33d2]3351 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3352 { $$ = $2->addParamList( $6 ); }
[4d51835]3353 | '(' variable_abstract_function ')' // redundant parenthesis
3354 { $$ = $2; }
3355 ;
[b87a5ed]3356
[de62360d]3357// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3358// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3359
[c0aa336]3360cfa_identifier_parameter_declarator_tuple: // CFA
3361 cfa_identifier_parameter_declarator_no_tuple
3362 | cfa_abstract_tuple
3363 | type_qualifier_list cfa_abstract_tuple
[4d51835]3364 { $$ = $2->addQualifiers( $1 ); }
3365 ;
[b87a5ed]3366
[c0aa336]3367cfa_identifier_parameter_declarator_no_tuple: // CFA
3368 cfa_identifier_parameter_ptr
3369 | cfa_identifier_parameter_array
[4d51835]3370 ;
[b87a5ed]3371
[c0aa336]3372cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3373 // No SUE declaration in parameter list.
3374 ptrref_operator type_specifier_nobody
[ce8c12f]3375 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3376 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3377 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3378 | ptrref_operator cfa_abstract_function
[ce8c12f]3379 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3380 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3381 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3382 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3383 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3384 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3385 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3386 ;
[b87a5ed]3387
[c0aa336]3388cfa_identifier_parameter_array: // CFA
[de62360d]3389 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3390 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3391 '[' ']' type_specifier_nobody
[2871210]3392 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3393 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3394 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3395 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3396 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3397 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3398 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3399 | multi_array_dimension type_specifier_nobody
[4d51835]3400 { $$ = $2->addNewArray( $1 ); }
[9059213]3401
[c0aa336]3402 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3403 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3404 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3405 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3406 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3407 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3408 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3409 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3410 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3411 { $$ = $2->addNewArray( $1 ); }
3412 ;
[51b73452]3413
[c0aa336]3414cfa_array_parameter_1st_dimension:
[c0a33d2]3415 '[' push type_qualifier_list '*' pop ']' // remaining C99
3416 { $$ = DeclarationNode::newVarArray( $3 ); }
3417 | '[' push type_qualifier_list assignment_expression pop ']'
3418 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3419 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3420 // declaration_qualifier_list must be used because of shift/reduce conflict with
3421 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3422 // appear in this context.
[c0a33d2]3423 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3424 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3425 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3426 ;
[b87a5ed]3427
[de62360d]3428// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3429// identifier to which the type applies, e.g.:
[c11e31c]3430//
[b87a5ed]3431// [int] f( int ); // abstract variable parameter; no parameter name specified
3432// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3433//
3434// These rules need LR(3):
3435//
[c0aa336]3436// cfa_abstract_tuple identifier_or_type_name
[40de461]3437// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3438//
3439// since a function return type can be syntactically identical to a tuple type:
3440//
[b87a5ed]3441// [int, int] t;
3442// [int, int] f( int );
[c11e31c]3443//
[2871210]3444// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3445// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3446// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3447// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3448
[c0aa336]3449cfa_abstract_declarator_tuple: // CFA
3450 cfa_abstract_tuple
3451 | type_qualifier_list cfa_abstract_tuple
[4d51835]3452 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3453 | cfa_abstract_declarator_no_tuple
[4d51835]3454 ;
[b87a5ed]3455
[c0aa336]3456cfa_abstract_declarator_no_tuple: // CFA
3457 cfa_abstract_ptr
3458 | cfa_abstract_array
[4d51835]3459 ;
[b87a5ed]3460
[c0aa336]3461cfa_abstract_ptr: // CFA
[dd51906]3462 ptrref_operator type_specifier
[ce8c12f]3463 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3464 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3465 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3466 | ptrref_operator cfa_abstract_function
[ce8c12f]3467 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3468 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3469 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3470 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3471 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3472 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3473 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3474 ;
[b87a5ed]3475
[c0aa336]3476cfa_abstract_array: // CFA
[de62360d]3477 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3478 // empty (void) function return type.
[2871210]3479 '[' ']' type_specifier
[2298f728]3480 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3481 | '[' ']' multi_array_dimension type_specifier
[2298f728]3482 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3483 | multi_array_dimension type_specifier
3484 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3485 | '[' ']' cfa_abstract_ptr
[2298f728]3486 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3487 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3488 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3489 | multi_array_dimension cfa_abstract_ptr
[4d51835]3490 { $$ = $2->addNewArray( $1 ); }
3491 ;
[b87a5ed]3492
[c0aa336]3493cfa_abstract_tuple: // CFA
[c0a33d2]3494 '[' push cfa_abstract_parameter_list pop ']'
3495 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3496 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3497 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3498 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3499 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3500 ;
[b87a5ed]3501
[c0aa336]3502cfa_abstract_function: // CFA
[40de461]3503// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3504// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3505 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3506 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3507 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3508 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3509 ;
[b87a5ed]3510
[de62360d]3511// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3512// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3513//
[de62360d]3514// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3515// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3516//
3517// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3518// prototype-format parameter type declarators) is an obsolescent feature."
3519//
[de62360d]3520// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3521// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3522
[c11e31c]3523//************************* MISCELLANEOUS ********************************
[51b73452]3524
[b87a5ed]3525comma_opt: // redundant comma
[4d51835]3526 // empty
3527 | ','
3528 ;
[51b73452]3529
[5a51798]3530default_initializer_opt:
[4d51835]3531 // empty
[58dd019]3532 { $$ = nullptr; }
[4d51835]3533 | '=' assignment_expression
3534 { $$ = $2; }
3535 ;
[51b73452]3536
3537%%
[a1c9ddd]3538
[c11e31c]3539// ----end of grammar----
[51b73452]3540
[c11e31c]3541// Local Variables: //
[b87a5ed]3542// mode: c++ //
[de62360d]3543// tab-width: 4 //
[c11e31c]3544// compile-command: "make install" //
3545// End: //
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