source: src/Parser/parser.yy@ f4ec5e45

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 f4ec5e45 was f9c3100, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago

refactor assignment_operator, limit aggregate name to unqualified name, add new syntax for enumerated-type extensions and enum initialization, rename typedef rule to typedef_name

  • Property mode set to 100644
File size: 143.3 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
[f9c3100]12// Last Modified On : Tue Mar 23 20:56:24 2021
13// Update Count : 4929
[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)
[f9c3100]34
[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
[9fb1367]284%token CHOOSE DISABLE ENABLE FALLTHRU FALLTHROUGH TRY 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
[9fb1367]289%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname
290%token<tok> TIMEOUT WOR CATCH RECOVER CATCHRESUME FIXUP FINALLY // CFA
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
[f9c3100]323%type<op> ptrref_operator unary_operator assignment_operator simple_assignment_operator compound_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
[f9c3100]430%type<decl> typedef_name 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
[f9c3100]442%type<decl> type_specifier type_specifier_nobody
[51b73452]443
[c0aa336]444%type<decl> variable_declarator variable_ptr variable_array variable_function
445%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]446
[f9c3100]447%type<decl> attribute_list_opt attribute_list 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.
[9fb1367]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 CATCH // token precedence for start of TIMEOUT in WAITFOR statement
468%precedence RECOVER // token precedence for start of TIMEOUT in WAITFOR statement
469%precedence CATCHRESUME // token precedence for start of TIMEOUT in WAITFOR statement
470%precedence FIXUP // token precedence for start of TIMEOUT in WAITFOR statement
471%precedence FINALLY // token precedence for start of TIMEOUT in WAITFOR statement
472%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
473
[51b73452]474
[65d6de4]475// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
476// forall( otype T ) struct Foo { T v; };
477// .-----. matches pointer to function returning a generic (which is impossible without a type)
478// Foo ( *fp )( int );
479// `---' matches start of TYPEGENname '('
[fc20514]480// must be:
[a16a7ec]481// Foo( int ) ( *fp )( int );
[fc20514]482// The same problem occurs here:
483// forall( otype T ) struct Foo { T v; } ( *fp )( int );
484// must be:
485// forall( otype T ) struct Foo { T v; } ( int ) ( *fp )( int );
[65d6de4]486
487// Order of these lines matters (low-to-high precedence).
488%precedence TYPEGENname
[284da8c]489%precedence '}'
[65d6de4]490%precedence '('
491
[c786e1d]492// %precedence RESUME
493// %precedence '{'
494// %precedence ')'
495
[f38e7d7]496%locations // support location tracking for error messages
[930f69e]497
[b87a5ed]498%start translation_unit // parse-tree root
[51b73452]499
500%%
[c11e31c]501//************************* Namespace Management ********************************
502
[3d26610]503// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
504// which are lexically identical.
[c11e31c]505//
[3d26610]506// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
507// foo f; // to allow it to appear in this context
[c11e31c]508//
[3d26610]509// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
510// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
511// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
512// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
513// must be distinguished by the lexical scanner.
[c11e31c]514//
[3d26610]515// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
516// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
517// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
518// each context that introduces a name scope, a new level is created in the type table and that level is popped on
519// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
520// This requires distinguishing between type names that are local to the current declaration scope and those that
521// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]522//
[3d26610]523// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
524// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
525// around the list separator.
526//
527// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
528// push pop push pop
[51b73452]529
530push:
[ab57786]531 { typedefTable.enterScope(); }
[4d51835]532 ;
[51b73452]533
534pop:
[ab57786]535 { typedefTable.leaveScope(); }
[4d51835]536 ;
[51b73452]537
[c11e31c]538//************************* CONSTANTS ********************************
[51b73452]539
540constant:
[de62360d]541 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]542 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]543 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
544 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]545 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
546 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]547 ;
[51b73452]548
[5b2edbc]549quasi_keyword: // CFA
550 TIMEOUT
551 | WOR
[9fb1367]552 | CATCH
553 | RECOVER
554 | CATCHRESUME
555 | FIXUP
556 | FINALLY
[5b2edbc]557 ;
558
[033ff37]559identifier:
[4d51835]560 IDENTIFIER
[5b2edbc]561 | quasi_keyword
[679e644]562 | '@' // CFA
563 { Token tok = { new string( DeclarationNode::anonymous.newName() ), yylval.tok.loc }; $$ = tok; }
[4d51835]564 ;
[51b73452]565
[ab57786]566string_literal:
567 string_literal_list { $$ = build_constantStr( *$1 ); }
568 ;
569
[b87a5ed]570string_literal_list: // juxtaposed strings are concatenated
[ab57786]571 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]572 | string_literal_list STRINGliteral
573 {
[15697ff]574 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]575 delete $2; // allocated by lexer
[ab57786]576 $$ = $1; // conversion from tok to str
[7bf7fb9]577 }
[4d51835]578 ;
[51b73452]579
[c11e31c]580//************************* EXPRESSIONS ********************************
[51b73452]581
582primary_expression:
[4d51835]583 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]584 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]585 | quasi_keyword
586 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[1b29996]587 | tuple
[4d51835]588 | '(' comma_expression ')'
589 { $$ = $2; }
590 | '(' compound_statement ')' // GCC, lambda expression
[408ab79]591 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast<CompoundStmt *>(maybeMoveBuild<Statement>($2) ) ) ); }
[033ff37]592 | type_name '.' identifier // CFA, nested type
[203c667]593 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[679e644]594 | type_name '.' '[' field_name_list ']' // CFA, nested type / tuple field selector
[203c667]595 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]596 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]597 {
598 // add the missing control expression to the GenericExpr and return it
599 $5->control = maybeMoveBuild<Expression>( $3 );
600 $$ = new ExpressionNode( $5 );
601 }
[c786e1d]602 // | RESUME '(' comma_expression ')'
603 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
604 // | RESUME '(' comma_expression ')' compound_statement
605 // { SemanticError( yylloc, "Resume expression is currently unimplemented." ); $$ = nullptr; }
[24c3b67]606 ;
607
608generic_assoc_list: // C11
[d807ca28]609 generic_association
[24c3b67]610 | generic_assoc_list ',' generic_association
[d807ca28]611 {
612 // steal the association node from the singleton and delete the wrapper
613 $1->associations.splice($1->associations.end(), $3->associations);
614 delete $3;
615 $$ = $1;
616 }
[24c3b67]617 ;
618
619generic_association: // C11
620 type_no_function ':' assignment_expression
[d807ca28]621 {
622 // create a GenericExpr wrapper with one association pair
[408ab79]623 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>( $3 ) } } );
[d807ca28]624 }
[24c3b67]625 | DEFAULT ':' assignment_expression
[408ab79]626 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>( $3 ) } } ); }
[4d51835]627 ;
[51b73452]628
629postfix_expression:
[4d51835]630 primary_expression
[6a99803]631 | postfix_expression '[' assignment_expression ',' comma_expression ']'
632 // { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, new ExpressionNode( build_binary_val( OperKinds::Index, $3, $5 ) ) ) ); }
633 { SemanticError( yylloc, "New array subscript is currently unimplemented." ); $$ = nullptr; }
[7fdb94e1]634 | postfix_expression '[' assignment_expression ']'
[c6b1105]635 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]636 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
637 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
638 // equivalent to the old x[i,j].
[7fdb94e1]639 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[cbbd8fd7]640 | postfix_expression '{' argument_expression_list_opt '}' // CFA, constructor call
[bd3d9e4]641 {
642 Token fn;
643 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
644 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
645 }
[cbbd8fd7]646 | postfix_expression '(' argument_expression_list_opt ')'
[d1625f8]647 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[948fdef]648 | postfix_expression '`' identifier // CFA, postfix call
[60a8062]649 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]650 | constant '`' identifier // CFA, postfix call
[60a8062]651 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), $1 ) ); }
[948fdef]652 | string_literal '`' identifier // CFA, postfix call
[60a8062]653 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( build_postfix_name( $3 ) ) ), new ExpressionNode( $1 ) ) ); }
[033ff37]654 | postfix_expression '.' identifier
[d1625f8]655 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]656 | postfix_expression '.' INTEGERconstant // CFA, tuple index
657 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]658 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
659 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[679e644]660 | postfix_expression '.' '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]661 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[e307e12]662 | postfix_expression '.' aggregate_control
[312029a]663 { $$ = new ExpressionNode( build_keyword_cast( $3, $1 ) ); }
[033ff37]664 | postfix_expression ARROW identifier
[ee27df2]665 { $$ = new ExpressionNode( build_pfieldSel( $1, build_varref( $3 ) ) ); }
[861799c7]666 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
667 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[679e644]668 | postfix_expression ARROW '[' field_name_list ']' // CFA, tuple field selector
[7fdb94e1]669 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]670 | postfix_expression ICR
[d1625f8]671 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]672 | postfix_expression DECR
[d1625f8]673 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]674 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]675 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]676 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]677 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[cbbd8fd7]678 | '^' primary_expression '{' argument_expression_list_opt '}' // CFA, destructor call
[097e2b0]679 {
[9706554]680 Token fn;
[ecb27a7]681 fn.str = new string( "^?{}" ); // location undefined
682 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]683 }
[4d51835]684 ;
[51b73452]685
[cbbd8fd7]686argument_expression_list_opt:
[757ffed]687 // empty
688 { $$ = nullptr; }
689 | argument_expression
[cbbd8fd7]690 | argument_expression_list_opt ',' argument_expression
[4a063df]691 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]692 ;
[51b73452]693
694argument_expression:
[757ffed]695 '@' // CFA, default parameter
[679e644]696 { SemanticError( yylloc, "Default parameter for argument is currently unimplemented." ); $$ = nullptr; }
697 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]698 | assignment_expression
699 ;
[b87a5ed]700
[679e644]701field_name_list: // CFA, tuple field selector
[4d51835]702 field
[4a063df]703 | field_name_list ',' field { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]704 ;
[b87a5ed]705
706field: // CFA, tuple field selector
[faddbd8]707 field_name
[930f69e]708 | FLOATING_DECIMALconstant field
709 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[679e644]710 | FLOATING_DECIMALconstant '[' field_name_list ']'
[7fdb94e1]711 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]712 | field_name '.' field
[bf32bb8]713 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]714 | field_name '.' '[' field_name_list ']'
[7fdb94e1]715 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]716 | field_name ARROW field
[bf32bb8]717 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[679e644]718 | field_name ARROW '[' field_name_list ']'
[7fdb94e1]719 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]720 ;
[51b73452]721
[faddbd8]722field_name:
[df22130]723 INTEGERconstant fraction_constants_opt
[8780e30]724 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]725 | FLOATINGconstant fraction_constants_opt
[8780e30]726 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[033ff37]727 | identifier fraction_constants_opt
[4cb935e]728 {
[84d58c5]729 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
730 }
[1b29996]731 ;
732
[df22130]733fraction_constants_opt:
[1b29996]734 // empty
[8780e30]735 { $$ = nullptr; }
[df22130]736 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]737 {
[930f69e]738 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]739 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
740 }
[faddbd8]741 ;
742
[51b73452]743unary_expression:
[4d51835]744 postfix_expression
[c6b1105]745 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
746 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]747 | constant
[ab57786]748 | string_literal
[d1625f8]749 { $$ = new ExpressionNode( $1 ); }
[4d51835]750 | EXTENSION cast_expression // GCC
[e04ef3a]751 { $$ = $2->set_extension( true ); }
[c6b1105]752 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
753 // { * X; } // dereference X
754 // { * int X; } // CFA declaration of pointer to int
[51e076e]755 | ptrref_operator cast_expression // CFA
[9706554]756 {
757 switch ( $1 ) {
[d9e2280]758 case OperKinds::AddressOf:
[408ab79]759 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) );
[9706554]760 break;
[d9e2280]761 case OperKinds::PointTo:
[d1625f8]762 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]763 break;
[5809461]764 case OperKinds::And:
[408ab79]765 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild<Expression>( $2 ) ) ) );
[5809461]766 break;
[9706554]767 default:
768 assert( false );
769 }
770 }
[4d51835]771 | unary_operator cast_expression
[d1625f8]772 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]773 | ICR unary_expression
[d1625f8]774 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]775 | DECR unary_expression
[d1625f8]776 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]777 | SIZEOF unary_expression
[408ab79]778 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[84d58c5]779 | SIZEOF '(' type_no_function ')'
[db70fe4]780 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]781 | ALIGNOF unary_expression // GCC, variable alignment
[408ab79]782 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild<Expression>( $2 ) ) ); }
[a2e0687]783 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]784 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[033ff37]785 | OFFSETOF '(' type_no_function ',' identifier ')'
[d1625f8]786 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[4d51835]787 ;
[51b73452]788
[dd51906]789ptrref_operator:
[d9e2280]790 '*' { $$ = OperKinds::PointTo; }
791 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]792 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]793 | ANDAND { $$ = OperKinds::And; }
[dd51906]794 ;
795
[51b73452]796unary_operator:
[d9e2280]797 '+' { $$ = OperKinds::UnPlus; }
798 | '-' { $$ = OperKinds::UnMinus; }
799 | '!' { $$ = OperKinds::Neg; }
800 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]801 ;
[51b73452]802
803cast_expression:
[4d51835]804 unary_expression
[84d58c5]805 | '(' type_no_function ')' cast_expression
[d1625f8]806 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[e307e12]807 | '(' aggregate_control '&' ')' cast_expression // CFA
[312029a]808 { $$ = new ExpressionNode( build_keyword_cast( $2, $5 ) ); }
[fae90d5f]809 | '(' VIRTUAL ')' cast_expression // CFA
[408ab79]810 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]811 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[408ab79]812 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild<Expression>( $5 ), maybeMoveBuildType( $3 ) ) ); }
[1528a2c]813 | '(' RETURN type_no_function ')' cast_expression // CFA
814 { SemanticError( yylloc, "Return cast is currently unimplemented." ); $$ = nullptr; }
815 | '(' COERCE type_no_function ')' cast_expression // CFA
816 { SemanticError( yylloc, "Coerce cast is currently unimplemented." ); $$ = nullptr; }
817 | '(' qualifier_cast_list ')' cast_expression // CFA
818 { SemanticError( yylloc, "Qualifier cast is currently unimplemented." ); $$ = nullptr; }
[84d58c5]819// | '(' type_no_function ')' tuple
[1b29996]820// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]821 ;
[51b73452]822
[1528a2c]823qualifier_cast_list:
824 cast_modifier type_qualifier_name
825 | cast_modifier MUTEX
826 | qualifier_cast_list cast_modifier type_qualifier_name
827 | qualifier_cast_list cast_modifier MUTEX
828 ;
829
830cast_modifier:
831 '-'
832 | '+'
833 ;
834
[994d080]835exponential_expression:
[4d51835]836 cast_expression
[994d080]837 | exponential_expression '\\' cast_expression
[e5f2a67]838 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]839 ;
840
841multiplicative_expression:
842 exponential_expression
843 | multiplicative_expression '*' exponential_expression
[d1625f8]844 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]845 | multiplicative_expression '/' exponential_expression
[d1625f8]846 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]847 | multiplicative_expression '%' exponential_expression
[d1625f8]848 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]849 ;
[51b73452]850
851additive_expression:
[4d51835]852 multiplicative_expression
853 | additive_expression '+' multiplicative_expression
[d1625f8]854 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]855 | additive_expression '-' multiplicative_expression
[d1625f8]856 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]857 ;
[51b73452]858
859shift_expression:
[4d51835]860 additive_expression
861 | shift_expression LS additive_expression
[d1625f8]862 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]863 | shift_expression RS additive_expression
[d1625f8]864 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]865 ;
[51b73452]866
867relational_expression:
[4d51835]868 shift_expression
869 | relational_expression '<' shift_expression
[d1625f8]870 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]871 | relational_expression '>' shift_expression
[d1625f8]872 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]873 | relational_expression LE shift_expression
[d1625f8]874 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]875 | relational_expression GE shift_expression
[d1625f8]876 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]877 ;
[51b73452]878
879equality_expression:
[4d51835]880 relational_expression
881 | equality_expression EQ relational_expression
[d1625f8]882 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]883 | equality_expression NE relational_expression
[d1625f8]884 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]885 ;
[51b73452]886
887AND_expression:
[4d51835]888 equality_expression
889 | AND_expression '&' equality_expression
[d1625f8]890 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]891 ;
[51b73452]892
893exclusive_OR_expression:
[4d51835]894 AND_expression
895 | exclusive_OR_expression '^' AND_expression
[d1625f8]896 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]897 ;
[51b73452]898
899inclusive_OR_expression:
[4d51835]900 exclusive_OR_expression
901 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]902 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]903 ;
[51b73452]904
905logical_AND_expression:
[4d51835]906 inclusive_OR_expression
907 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]908 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]909 ;
[51b73452]910
911logical_OR_expression:
[4d51835]912 logical_AND_expression
913 | logical_OR_expression OROR logical_AND_expression
[d1625f8]914 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]915 ;
[51b73452]916
917conditional_expression:
[4d51835]918 logical_OR_expression
919 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]920 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]921 // FIX ME: computes $1 twice
[4d51835]922 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]923 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]924 ;
[51b73452]925
926constant_expression:
[4d51835]927 conditional_expression
928 ;
[51b73452]929
930assignment_expression:
[4d51835]931 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
932 conditional_expression
933 | unary_expression assignment_operator assignment_expression
[9867cdb]934 {
[25744d2]935// if ( $2 == OperKinds::AtAssn ) {
936// SemanticError( yylloc, "C @= assignment is currently unimplemented." ); $$ = nullptr;
937// } else {
[9867cdb]938 $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) );
[25744d2]939// } // if
[9867cdb]940 }
[7fdb94e1]941 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]942 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]943 ;
[51b73452]944
945assignment_expression_opt:
[4d51835]946 // empty
[d1625f8]947 { $$ = nullptr; }
[4d51835]948 | assignment_expression
949 ;
[b87a5ed]950
[9706554]951assignment_operator:
[f9c3100]952 simple_assignment_operator
953 | compound_assignment_operator
954 ;
955
956simple_assignment_operator:
[d9e2280]957 '=' { $$ = OperKinds::Assign; }
[f9c3100]958 | ATassign { $$ = OperKinds::AtAssn; } // CFA
959 ;
960
961compound_assignment_operator:
962 EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]963 | MULTassign { $$ = OperKinds::MulAssn; }
964 | DIVassign { $$ = OperKinds::DivAssn; }
965 | MODassign { $$ = OperKinds::ModAssn; }
966 | PLUSassign { $$ = OperKinds::PlusAssn; }
967 | MINUSassign { $$ = OperKinds::MinusAssn; }
968 | LSassign { $$ = OperKinds::LSAssn; }
969 | RSassign { $$ = OperKinds::RSAssn; }
970 | ANDassign { $$ = OperKinds::AndAssn; }
971 | ERassign { $$ = OperKinds::ERAssn; }
972 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]973 ;
[9706554]974
[b87a5ed]975tuple: // CFA, tuple
[de62360d]976 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]977 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]978// '[' ']'
979// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]980// | '[' push assignment_expression pop ']'
[1b29996]981// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]982 '[' ',' tuple_expression_list ']'
983 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
984 | '[' push assignment_expression pop ',' tuple_expression_list ']'
[4a063df]985 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $6 ) ) )); }
[4d51835]986 ;
[51b73452]987
988tuple_expression_list:
[0a6d8204]989 assignment_expression
990 | '@' // CFA
991 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
992 | tuple_expression_list ',' assignment_expression
[4a063df]993 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[0a6d8204]994 | tuple_expression_list ',' '@'
995 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
[4d51835]996 ;
[51b73452]997
998comma_expression:
[4d51835]999 assignment_expression
[9706554]1000 | comma_expression ',' assignment_expression
[408ab79]1001 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1002 ;
[51b73452]1003
1004comma_expression_opt:
[4d51835]1005 // empty
[58dd019]1006 { $$ = nullptr; }
[4d51835]1007 | comma_expression
1008 ;
[51b73452]1009
[c11e31c]1010//*************************** STATEMENTS *******************************
[51b73452]1011
1012statement:
[4d51835]1013 labeled_statement
1014 | compound_statement
[c0a33d2]1015 | expression_statement
[4d51835]1016 | selection_statement
1017 | iteration_statement
1018 | jump_statement
[8b47e50]1019 | with_statement
[b6b3c42]1020 | mutex_statement
[5b2edbc]1021 | waitfor_statement
[4d51835]1022 | exception_statement
[2a8427c6]1023 | enable_disable_statement
[fae90d5f]1024 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]1025 | asm_statement
[61fc4f6]1026 | DIRECTIVE
[6d539f83]1027 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]1028 ;
[51b73452]1029
1030labeled_statement:
[033ff37]1031 // labels cannot be identifiers 0 or 1
[44a81853]1032 identifier_or_type_name ':' attribute_list_opt statement
[6d01d89]1033 { $$ = $4->add_label( $1, $3 ); }
[4d51835]1034 ;
[51b73452]1035
1036compound_statement:
[4d51835]1037 '{' '}'
[e82aa9df]1038 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]1039 | '{' push
[5e25953]1040 local_label_declaration_opt // GCC, local labels appear at start of block
[9bd6105]1041 statement_decl_list // C99, intermix declarations and statements
[c0aa336]1042 pop '}'
[35718a9]1043 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]1044 ;
[b87a5ed]1045
[9bd6105]1046statement_decl_list: // C99
1047 statement_decl
[35718a9]1048 | statement_decl_list statement_decl
[6d01d89]1049 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1050 ;
[51b73452]1051
[9bd6105]1052statement_decl:
[4d51835]1053 declaration // CFA, new & old style declarations
[e82aa9df]1054 { $$ = new StatementNode( $1 ); }
[4d51835]1055 | EXTENSION declaration // GCC
[6d01d89]1056 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[4d51835]1057 | function_definition
[e82aa9df]1058 { $$ = new StatementNode( $1 ); }
[c0aa336]1059 | EXTENSION function_definition // GCC
[6d01d89]1060 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[35718a9]1061 | statement
[4d51835]1062 ;
[51b73452]1063
[9bd6105]1064statement_list_nodecl:
[4d51835]1065 statement
[9bd6105]1066 | statement_list_nodecl statement
[6d01d89]1067 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1068 ;
[51b73452]1069
1070expression_statement:
[4d51835]1071 comma_expression_opt ';'
[e82aa9df]1072 { $$ = new StatementNode( build_expr( $1 ) ); }
[4d51835]1073 ;
[51b73452]1074
1075selection_statement:
[3d26610]1076 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1077 // the inherent S/R conflict with THEN/ELSE.
1078 push if_statement pop
1079 { $$ = $2; }
[4cc585b]1080 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1081 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1082 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1083 {
[6a276a0]1084 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1085 // The semantics of the declaration list is changed to include associated initialization, which is performed
1086 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1087 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1088 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1089 // statement.
[a7741435]1090 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1091 }
[4d51835]1092 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1093 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1094 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1095 {
[6a276a0]1096 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1097 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1098 }
[4d51835]1099 ;
[b87a5ed]1100
[3d26610]1101if_statement:
1102 IF '(' if_control_expression ')' statement %prec THEN
1103 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1104 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[3d26610]1105 | IF '(' if_control_expression ')' statement ELSE statement
[a025ea8]1106 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1107 ;
1108
[936e9f4]1109if_control_expression:
[35718a9]1110 comma_expression
[f271bdd]1111 { $$ = new IfCtrl( nullptr, $1 ); }
[35718a9]1112 | c_declaration // no semi-colon
[f271bdd]1113 { $$ = new IfCtrl( $1, nullptr ); }
[35718a9]1114 | cfa_declaration // no semi-colon
[f271bdd]1115 { $$ = new IfCtrl( $1, nullptr ); }
[6d49ea3]1116 | declaration comma_expression // semi-colon separated
[f271bdd]1117 { $$ = new IfCtrl( $1, $2 ); }
[936e9f4]1118 ;
1119
[de62360d]1120// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1121// clause allows a list of values and subranges.
[b87a5ed]1122
1123case_value: // CFA
[4d51835]1124 constant_expression { $$ = $1; }
1125 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[408ab79]1126 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1127 | subrange // CFA, subrange
1128 ;
[b87a5ed]1129
1130case_value_list: // CFA
[e82aa9df]1131 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1132 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1133 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1134 ;
[b87a5ed]1135
1136case_label: // CFA
[8688ce1]1137 CASE case_value_list ':' { $$ = $2; }
[e82aa9df]1138 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1139 // A semantic check is required to ensure only one default clause per switch/choose statement.
1140 ;
[b87a5ed]1141
[6a276a0]1142//label_list_opt:
1143// // empty
1144// | identifier_or_type_name ':'
1145// | label_list_opt identifier_or_type_name ':'
1146// ;
1147
[b87a5ed]1148case_label_list: // CFA
[4d51835]1149 case_label
[1d4580a]1150 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1151 ;
[b87a5ed]1152
1153case_clause: // CFA
[a025ea8]1154 case_label_list statement { $$ = $1->append_last_case( maybe_build_compound( $2 ) ); }
[4d51835]1155 ;
[b87a5ed]1156
1157switch_clause_list_opt: // CFA
[4d51835]1158 // empty
[58dd019]1159 { $$ = nullptr; }
[4d51835]1160 | switch_clause_list
1161 ;
[b87a5ed]1162
1163switch_clause_list: // CFA
[9bd6105]1164 case_label_list statement_list_nodecl
[e82aa9df]1165 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1166 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1167 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1168 ;
[b87a5ed]1169
[51b73452]1170iteration_statement:
[401e61f]1171 WHILE '(' push if_control_expression ')' statement pop
[a025ea8]1172 { $$ = new StatementNode( build_while( $4, maybe_build_compound( $6 ) ) ); }
[f271bdd]1173 | WHILE '(' ')' statement // CFA => while ( 1 )
[a025ea8]1174 { $$ = new StatementNode( build_while( new IfCtrl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) ); }
[4d51835]1175 | DO statement WHILE '(' comma_expression ')' ';'
[a025ea8]1176 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
[f271bdd]1177 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[a025ea8]1178 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) ); }
[6d01d89]1179 | FOR '(' push for_control_expression_list ')' statement pop
[a025ea8]1180 { $$ = new StatementNode( build_for( $4, maybe_build_compound( $6 ) ) ); }
[f1aeede]1181 | FOR '(' ')' statement // CFA => for ( ;; )
[a025ea8]1182 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[4d51835]1183 ;
[51b73452]1184
[6d01d89]1185for_control_expression_list:
1186 for_control_expression
1187 | for_control_expression_list ':' for_control_expression
[67d4e37]1188 // ForCtrl + ForCtrl:
1189 // init + init => multiple declaration statements that are hoisted
1190 // condition + condition => (expression) && (expression)
1191 // change + change => (expression), (expression)
1192 {
1193 $1->init->set_last( $3->init );
1194 if ( $1->condition ) {
1195 if ( $3->condition ) {
1196 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1197 } // if
1198 } else $1->condition = $3->condition;
1199 if ( $1->change ) {
1200 if ( $3->change ) {
1201 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1202 } // if
1203 } else $1->change = $3->change;
1204 $$ = $1;
1205 }
[6d01d89]1206 ;
1207
[51b73452]1208for_control_expression:
[6d01d89]1209 ';' comma_expression_opt ';' comma_expression_opt
1210 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1211 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1212 { $$ = new ForCtrl( $1, $3, $5 ); }
1213 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1214 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1215
[6d01d89]1216 | comma_expression // CFA
[f1aeede]1217 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1218 OperKinds::LThan, $1->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1219 | '=' comma_expression // CFA
[9853d9b0]1220 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1221 OperKinds::LEThan, $2->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1222 | comma_expression inclexcl comma_expression // CFA
[ee27df2]1223 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1224 | comma_expression inclexcl comma_expression '~' comma_expression // CFA
[cc22003]1225 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[cbbd8fd7]1226 | comma_expression ';' // CFA
1227 { $$ = forCtrl( new ExpressionNode( build_constantInteger( *new string( "0u" ) ) ), $1, nullptr, OperKinds::LThan, nullptr, nullptr ); }
[f1aeede]1228 | comma_expression ';' comma_expression // CFA
1229 { $$ = forCtrl( $3, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1230 OperKinds::LThan, $3->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1231 | comma_expression ';' '=' comma_expression // CFA
[332bd33]1232 { $$ = forCtrl( $4, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1233 OperKinds::LEThan, $4->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1234 | comma_expression ';' comma_expression inclexcl comma_expression // CFA
[f1aeede]1235 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1236 | comma_expression ';' comma_expression inclexcl comma_expression '~' comma_expression // CFA
[f1aeede]1237 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, $7 ); }
[67d4e37]1238
1239 // There is a S/R conflicit if ~ and -~ are factored out.
1240 | comma_expression ';' comma_expression '~' '@' // CFA
1241 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1242 | comma_expression ';' comma_expression ErangeDown '@' // CFA
1243 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[2d2df9f]1244 | comma_expression ';' comma_expression '~' '@' '~' comma_expression // CFA
1245 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, $7 ); }
[1b54b54]1246 | comma_expression ';' comma_expression ErangeDown '@' '~' comma_expression // CFA
1247 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, $7 ); }
[2d2df9f]1248 | comma_expression ';' comma_expression '~' '@' '~' '@' // CFA
1249 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, nullptr ); }
[d1625f8]1250 ;
[51b73452]1251
[cc22003]1252inclexcl:
1253 '~'
1254 { $$ = OperKinds::LThan; }
[d69f4bb4]1255 | ErangeUpEq
[cc22003]1256 { $$ = OperKinds::LEThan; }
[d69f4bb4]1257 | ErangeDown
1258 { $$ = OperKinds::GThan; }
1259 | ErangeDownEq
1260 { $$ = OperKinds::GEThan; }
[cc22003]1261 ;
1262
[51b73452]1263jump_statement:
[44a81853]1264 GOTO identifier_or_type_name ';'
[ab57786]1265 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1266 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1267 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1268 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1269 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1270 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
[ec3f9c8]1271 | fall_through_name ';' // CFA
[6a276a0]1272 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
[ec3f9c8]1273 | fall_through_name identifier_or_type_name ';' // CFA
[6a276a0]1274 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1275 | fall_through_name DEFAULT ';' // CFA
1276 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1277 | CONTINUE ';'
[de62360d]1278 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1279 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1280 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1281 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1282 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1283 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1284 | BREAK ';'
[de62360d]1285 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1286 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1287 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1288 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1289 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1290 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1291 | RETURN comma_expression_opt ';'
[e82aa9df]1292 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1293 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1294 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1295 | SUSPEND ';'
[427854b]1296 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1297 | SUSPEND compound_statement
[427854b]1298 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1299 | SUSPEND COROUTINE ';'
[427854b]1300 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1301 | SUSPEND COROUTINE compound_statement
[427854b]1302 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1303 | SUSPEND GENERATOR ';'
[427854b]1304 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1305 | SUSPEND GENERATOR compound_statement
[427854b]1306 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1307 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1308 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1309 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1310 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1311 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1312 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1313 ;
[51b73452]1314
[6a276a0]1315fall_through_name: // CFA
1316 FALLTHRU
1317 | FALLTHROUGH
1318 ;
1319
[8b47e50]1320with_statement:
[5b2edbc]1321 WITH '(' tuple_expression_list ')' statement
[a378ca7]1322 {
1323 $$ = new StatementNode( build_with( $3, $5 ) );
1324 }
[5b2edbc]1325 ;
1326
[b6b3c42]1327// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1328mutex_statement:
[cbbd8fd7]1329 MUTEX '(' argument_expression_list_opt ')' statement
[fae90d5f]1330 { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; }
[b6b3c42]1331 ;
1332
[51d6d6a]1333when_clause:
[6a276a0]1334 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1335 ;
1336
[5b2edbc]1337when_clause_opt:
1338 // empty
[135b431]1339 { $$ = nullptr; }
[51d6d6a]1340 | when_clause
[5b2edbc]1341 ;
1342
1343waitfor:
[713926ca]1344 WAITFOR '(' cast_expression ')'
1345 { $$ = $3; }
[cbbd8fd7]1346// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1347// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1348 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1349 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1350 ;
1351
1352cast_expression_list:
1353 cast_expression
1354 | cast_expression_list ',' cast_expression
[a491a3c]1355 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1356 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1357 ;
1358
1359timeout:
[6a276a0]1360 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1361 ;
1362
1363waitfor_clause:
[51d6d6a]1364 when_clause_opt waitfor statement %prec THEN
[a025ea8]1365 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1366 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1367 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1368 | when_clause_opt timeout statement %prec THEN
[a025ea8]1369 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1370 | when_clause_opt ELSE statement
[a025ea8]1371 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[51d6d6a]1372 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
[713926ca]1373 | when_clause_opt timeout statement WOR ELSE statement
1374 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1375 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1376 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1377 ;
1378
1379waitfor_statement:
[51d6d6a]1380 when_clause_opt waitfor statement %prec THEN
[135b431]1381 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1382 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1383 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1384 ;
1385
[51b73452]1386exception_statement:
[9fb1367]1387 TRY compound_statement handler_clause %prec THEN
[e82aa9df]1388 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1389 | TRY compound_statement finally_clause
[e82aa9df]1390 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1391 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1392 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1393 ;
[51b73452]1394
1395handler_clause:
[098f7ff]1396 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1397 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1398 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1399 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1400 ;
1401
1402handler_predicate_opt:
[7fdb94e1]1403 // empty
[cbce272]1404 { $$ = nullptr; }
[6a276a0]1405 | ';' conditional_expression { $$ = $2; }
[307a732]1406 ;
1407
1408handler_key:
[6a276a0]1409 CATCH { $$ = CatchStmt::Terminate; }
[9fb1367]1410 | RECOVER { $$ = CatchStmt::Terminate; }
[6a276a0]1411 | CATCHRESUME { $$ = CatchStmt::Resume; }
[9fb1367]1412 | FIXUP { $$ = CatchStmt::Resume; }
[4d51835]1413 ;
[51b73452]1414
1415finally_clause:
[6a276a0]1416 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1417 ;
[51b73452]1418
1419exception_declaration:
[d0ffed1]1420 // No SUE declaration in parameter list.
1421 type_specifier_nobody
1422 | type_specifier_nobody declarator
[c0a33d2]1423 { $$ = $2->addType( $1 ); }
[d0ffed1]1424 | type_specifier_nobody variable_abstract_declarator
[4d51835]1425 { $$ = $2->addType( $1 ); }
[033ff37]1426 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1427 { $$ = $1->addName( $2 ); }
[c0aa336]1428 | cfa_abstract_declarator_tuple // CFA
[4d51835]1429 ;
[51b73452]1430
[2a8427c6]1431enable_disable_statement:
1432 enable_disable_key identifier_list compound_statement
1433 ;
1434
1435enable_disable_key:
1436 ENABLE
1437 | DISABLE
1438 ;
1439
[51b73452]1440asm_statement:
[ab57786]1441 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1442 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1443 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1444 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1445 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1446 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1447 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1448 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1449 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1450 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1451 ;
1452
1453asm_volatile_opt: // GCC
1454 // empty
1455 { $$ = false; }
1456 | VOLATILE
1457 { $$ = true; }
[4d51835]1458 ;
[b87a5ed]1459
1460asm_operands_opt: // GCC
[4d51835]1461 // empty
[58dd019]1462 { $$ = nullptr; } // use default argument
[4d51835]1463 | asm_operands_list
1464 ;
[b87a5ed]1465
1466asm_operands_list: // GCC
[4d51835]1467 asm_operand
1468 | asm_operands_list ',' asm_operand
[4a063df]1469 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1470 ;
[b87a5ed]1471
1472asm_operand: // GCC
[ab57786]1473 string_literal '(' constant_expression ')'
[408ab79]1474 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1475 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1476 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1477 ;
1478
[4e06c1e]1479asm_clobbers_list_opt: // GCC
[7f5566b]1480 // empty
[58dd019]1481 { $$ = nullptr; } // use default argument
[ab57786]1482 | string_literal
[d1625f8]1483 { $$ = new ExpressionNode( $1 ); }
[ab57786]1484 | asm_clobbers_list_opt ',' string_literal
[4a063df]1485 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1486 ;
[b87a5ed]1487
[7f5566b]1488label_list:
[033ff37]1489 identifier
[ab57786]1490 {
1491 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1492 delete $1; // allocated by lexer
1493 }
[033ff37]1494 | label_list ',' identifier
[ab57786]1495 {
1496 $$ = $1; $1->labels.push_back( *$3 );
1497 delete $3; // allocated by lexer
1498 }
[4d51835]1499 ;
[51b73452]1500
[c11e31c]1501//******************************* DECLARATIONS *********************************
[51b73452]1502
[b87a5ed]1503declaration_list_opt: // used at beginning of switch statement
[35718a9]1504 // empty
[58dd019]1505 { $$ = nullptr; }
[4d51835]1506 | declaration_list
1507 ;
[51b73452]1508
1509declaration_list:
[4d51835]1510 declaration
[35718a9]1511 | declaration_list declaration
1512 { $$ = $1->appendList( $2 ); }
[4d51835]1513 ;
[51b73452]1514
[407bde5]1515KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1516 // empty
[58dd019]1517 { $$ = nullptr; }
[35718a9]1518 | KR_parameter_list
[4d51835]1519 ;
[51b73452]1520
[35718a9]1521KR_parameter_list:
[4cc585b]1522 push c_declaration pop ';'
1523 { $$ = $2; }
[35718a9]1524 | KR_parameter_list push c_declaration pop ';'
[4d51835]1525 { $$ = $1->appendList( $3 ); }
1526 ;
[b87a5ed]1527
[51b1202]1528local_label_declaration_opt: // GCC, local label
[4d51835]1529 // empty
[51b1202]1530 | local_label_declaration_list
[4d51835]1531 ;
[b87a5ed]1532
[51b1202]1533local_label_declaration_list: // GCC, local label
1534 LABEL local_label_list ';'
1535 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1536 ;
[b87a5ed]1537
[51b1202]1538local_label_list: // GCC, local label
[033ff37]1539 identifier_or_type_name
1540 | local_label_list ',' identifier_or_type_name
[4d51835]1541 ;
[b87a5ed]1542
[936e9f4]1543declaration: // old & new style declarations
[35718a9]1544 c_declaration ';'
1545 | cfa_declaration ';' // CFA
[b47b827]1546 | static_assert // C11
[4d51835]1547 ;
[b87a5ed]1548
[b9be000b]1549static_assert:
1550 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1551 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1552 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1553 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1554
[de62360d]1555// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1556// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1557// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1558// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1559// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1560// block, but cannot be mixed within a specific declaration.
[c11e31c]1561//
[b87a5ed]1562// CFA C
1563// [10] int x; int x[10]; // array of 10 integers
1564// [10] * char y; char *y[10]; // array of 10 pointers to char
1565
[c0aa336]1566cfa_declaration: // CFA
[4cc585b]1567 cfa_variable_declaration
1568 | cfa_typedef_declaration
1569 | cfa_function_declaration
1570 | type_declaring_list
[2501ae5]1571 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1572 | trait_specifier
[4d51835]1573 ;
[b87a5ed]1574
[c0aa336]1575cfa_variable_declaration: // CFA
1576 cfa_variable_specifier initializer_opt
[7fdb94e1]1577 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1578 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1579 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1580 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1581 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1582 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1583 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1584 ;
[b87a5ed]1585
[c0aa336]1586cfa_variable_specifier: // CFA
[de62360d]1587 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1588 // storage-class
[c0aa336]1589 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1590 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1591 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1592 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1593 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1594 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1595 ;
[b87a5ed]1596
[c0aa336]1597cfa_function_declaration: // CFA
1598 cfa_function_specifier
1599 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1600 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1601 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1602 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1603 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1604 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1605 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1606 {
[481115f]1607 // Append the return type at the start (left-hand-side) to each identifier in the list.
1608 DeclarationNode * ret = new DeclarationNode;
1609 ret->type = maybeClone( $1->type->base );
[40de461]1610 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1611 }
1612 ;
[b87a5ed]1613
[c0aa336]1614cfa_function_specifier: // CFA
[40de461]1615// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1616// {
1617// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1618// }
[40de461]1619// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1620// {
1621// typedefTable.setNextIdentifier( *$5 );
1622// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1623// }
[40de461]1624// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1625// {
1626// typedefTable.setNextIdentifier( *$5 );
1627// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1628// }
1629// | '[' ']' typegen_name
1630 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1631 //
[40de461]1632 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1633 // '[' ']' type_specifier
1634 //
[2871210]1635 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1636 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1637 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1638 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1639 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1640 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1641 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1642 ;
[b87a5ed]1643
[c0aa336]1644cfa_function_return: // CFA
[c0a33d2]1645 '[' push cfa_parameter_list pop ']'
1646 { $$ = DeclarationNode::newTuple( $3 ); }
1647 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1648 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1649 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1650 ;
[b87a5ed]1651
[c0aa336]1652cfa_typedef_declaration: // CFA
1653 TYPEDEF cfa_variable_specifier
[4d51835]1654 {
[ecae5860]1655 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1656 $$ = $2->addTypedef();
1657 }
[c0aa336]1658 | TYPEDEF cfa_function_specifier
[4d51835]1659 {
[ecae5860]1660 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1661 $$ = $2->addTypedef();
1662 }
[033ff37]1663 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1664 {
[ecae5860]1665 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1666 $$ = $1->appendList( $1->cloneType( $5 ) );
1667 }
1668 ;
[b87a5ed]1669
[de62360d]1670// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1671// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1672
1673typedef_declaration:
[4d51835]1674 TYPEDEF type_specifier declarator
1675 {
[ecae5860]1676 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1677 $$ = $3->addType( $2 )->addTypedef();
1678 }
1679 | typedef_declaration pop ',' push declarator
1680 {
[ecae5860]1681 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1682 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1683 }
[de62360d]1684 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1685 {
[ecae5860]1686 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1687 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1688 }
1689 | type_specifier TYPEDEF declarator
1690 {
[ecae5860]1691 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1692 $$ = $3->addType( $1 )->addTypedef();
1693 }
1694 | type_specifier TYPEDEF type_qualifier_list declarator
1695 {
[ecae5860]1696 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1697 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1698 }
1699 ;
[b87a5ed]1700
[721f17a]1701typedef_expression:
[25744d2]1702 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1703 TYPEDEF identifier '=' assignment_expression
[4d51835]1704 {
[25744d2]1705 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1706 }
[033ff37]1707 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1708 {
[25744d2]1709 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1710 }
1711 ;
[51b73452]1712
[c0aa336]1713c_declaration:
[4cc585b]1714 declaration_specifier declaring_list
[7fdb94e1]1715 { $$ = distAttr( $1, $2 ); }
[4cc585b]1716 | typedef_declaration
[25744d2]1717 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1718 | sue_declaration_specifier
[4d51835]1719 ;
[51b73452]1720
1721declaring_list:
[de62360d]1722 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1723 // storage-class
[c0aa336]1724 declarator asm_name_opt initializer_opt
[7fdb94e1]1725 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1726 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1727 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1728 ;
[b87a5ed]1729
1730declaration_specifier: // type specifier + storage class
[4d51835]1731 basic_declaration_specifier
1732 | sue_declaration_specifier
[84d58c5]1733 | type_declaration_specifier
[4d51835]1734 ;
[b87a5ed]1735
[d0ffed1]1736declaration_specifier_nobody: // type specifier + storage class - {...}
1737 // Preclude SUE declarations in restricted scopes:
1738 //
1739 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1740 //
1741 // because it is impossible to call f due to name equivalence.
1742 basic_declaration_specifier
1743 | sue_declaration_specifier_nobody
[84d58c5]1744 | type_declaration_specifier
[d0ffed1]1745 ;
1746
1747type_specifier: // type specifier
[4d51835]1748 basic_type_specifier
1749 | sue_type_specifier
[84d58c5]1750 | type_type_specifier
[4d51835]1751 ;
[b87a5ed]1752
[d0ffed1]1753type_specifier_nobody: // type specifier - {...}
1754 // Preclude SUE declarations in restricted scopes:
1755 //
1756 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1757 //
1758 // because it is impossible to call f due to name equivalence.
1759 basic_type_specifier
1760 | sue_type_specifier_nobody
[84d58c5]1761 | type_type_specifier
[d0ffed1]1762 ;
1763
[b87a5ed]1764type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1765 // empty
[58dd019]1766 { $$ = nullptr; }
[4d51835]1767 | type_qualifier_list
1768 ;
[51b73452]1769
1770type_qualifier_list:
[de62360d]1771 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1772 //
[de62360d]1773 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1774 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1775 // appeared only once.
[4d51835]1776 type_qualifier
1777 | type_qualifier_list type_qualifier
1778 { $$ = $1->addQualifiers( $2 ); }
1779 ;
[51b73452]1780
1781type_qualifier:
[4d51835]1782 type_qualifier_name
[5e25953]1783 | attribute // trick handles most atrribute locations
[4d51835]1784 ;
[51b73452]1785
1786type_qualifier_name:
[4d51835]1787 CONST
[738e304]1788 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1789 | RESTRICT
[738e304]1790 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1791 | VOLATILE
[738e304]1792 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1793 | ATOMIC
[738e304]1794 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1795 | forall
1796 ;
1797
1798forall:
[35718a9]1799 FORALL '(' type_parameter_list ')' // CFA
1800 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1801 ;
[51b73452]1802
1803declaration_qualifier_list:
[4d51835]1804 storage_class_list
[de62360d]1805 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1806 { $$ = $1->addQualifiers( $2 ); }
1807 | declaration_qualifier_list type_qualifier_list storage_class_list
1808 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1809 ;
[51b73452]1810
1811storage_class_list:
[de62360d]1812 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1813 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1814 //
[de62360d]1815 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1816 // specifiers in a declaration.
[4d51835]1817 storage_class
1818 | storage_class_list storage_class
1819 { $$ = $1->addQualifiers( $2 ); }
1820 ;
[51b73452]1821
1822storage_class:
[4d51835]1823 EXTERN
[68fe077a]1824 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1825 | STATIC
[68fe077a]1826 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1827 | AUTO
[68fe077a]1828 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1829 | REGISTER
[68fe077a]1830 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1831 | THREADLOCAL // C11
[68fe077a]1832 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1833 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1834 | INLINE // C99
[ddfd945]1835 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1836 | FORTRAN // C99
[ddfd945]1837 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1838 | NORETURN // C11
[ddfd945]1839 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1840 ;
[51b73452]1841
1842basic_type_name:
[201aeb9]1843 VOID
[4d51835]1844 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1845 | BOOL // C99
1846 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1847 | CHAR
1848 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1849 | INT
1850 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1851 | INT128
1852 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1853 | UINT128
1854 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1855 | FLOAT
1856 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1857 | DOUBLE
1858 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1859 | uuFLOAT80
1860 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1861 | uuFLOAT128
1862 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1863 | uFLOAT16
1864 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1865 | uFLOAT32
1866 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1867 | uFLOAT32X
1868 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1869 | uFLOAT64
1870 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1871 | uFLOAT64X
1872 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1873 | uFLOAT128
1874 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[4d51835]1875 | COMPLEX // C99
[5b639ee]1876 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1877 | IMAGINARY // C99
[5b639ee]1878 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1879 | SIGNED
1880 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1881 | UNSIGNED
1882 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1883 | SHORT
1884 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1885 | LONG
1886 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1887 | VALIST // GCC, __builtin_va_list
1888 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1889 | AUTO_TYPE
1890 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[4d51835]1891 ;
[51b73452]1892
1893basic_declaration_specifier:
[4d51835]1894 // A semantic check is necessary for conflicting storage classes.
1895 basic_type_specifier
1896 | declaration_qualifier_list basic_type_specifier
1897 { $$ = $2->addQualifiers( $1 ); }
1898 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1899 { $$ = $1->addQualifiers( $2 ); }
1900 | basic_declaration_specifier storage_class type_qualifier_list
1901 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1902 | basic_declaration_specifier storage_class basic_type_specifier
1903 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1904 ;
[51b73452]1905
1906basic_type_specifier:
[84d58c5]1907 direct_type
[f38e7d7]1908 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1909 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1910 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1911 ;
[51b73452]1912
[84d58c5]1913direct_type:
[4d51835]1914 basic_type_name
1915 | type_qualifier_list basic_type_name
1916 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1917 | direct_type type_qualifier
[4d51835]1918 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1919 | direct_type basic_type_name
[4d51835]1920 { $$ = $1->addType( $2 ); }
1921 ;
[51b73452]1922
[84d58c5]1923indirect_type:
[b6ad601]1924 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]1925 { $$ = $3; }
[b6ad601]1926 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]1927 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]1928 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
1929 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
1930 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
1931 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]1932 | ZERO_T // CFA
1933 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1934 | ONE_T // CFA
1935 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1936 ;
[51b73452]1937
[d0ffed1]1938sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1939 sue_type_specifier
1940 | declaration_qualifier_list sue_type_specifier
1941 { $$ = $2->addQualifiers( $1 ); }
1942 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1943 { $$ = $1->addQualifiers( $2 ); }
1944 | sue_declaration_specifier storage_class type_qualifier_list
1945 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1946 ;
[51b73452]1947
[d0ffed1]1948sue_type_specifier: // struct, union, enum + type specifier
1949 elaborated_type
[fdca7c6]1950 | type_qualifier_list
1951 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1952 elaborated_type
1953 { $$ = $3->addQualifiers( $1 ); }
[4d51835]1954 | sue_type_specifier type_qualifier
[284da8c]1955 {
1956 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
1957 $$ = $1->addQualifiers( $2 );
1958 }
[4d51835]1959 ;
[51b73452]1960
[d0ffed1]1961sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1962 sue_type_specifier_nobody
1963 | declaration_qualifier_list sue_type_specifier_nobody
1964 { $$ = $2->addQualifiers( $1 ); }
1965 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1966 { $$ = $1->addQualifiers( $2 ); }
1967 | sue_declaration_specifier_nobody storage_class type_qualifier_list
1968 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1969 ;
1970
1971sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1972 elaborated_type_nobody
1973 | type_qualifier_list elaborated_type_nobody
1974 { $$ = $2->addQualifiers( $1 ); }
1975 | sue_type_specifier_nobody type_qualifier
1976 { $$ = $1->addQualifiers( $2 ); }
1977 ;
1978
[84d58c5]1979type_declaration_specifier:
1980 type_type_specifier
1981 | declaration_qualifier_list type_type_specifier
[4d51835]1982 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1983 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]1984 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1985 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]1986 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1987 ;
[b87a5ed]1988
[84d58c5]1989type_type_specifier: // typedef types
1990 type_name
1991 | type_qualifier_list type_name
1992 { $$ = $2->addQualifiers( $1 ); }
1993 | type_type_specifier type_qualifier
1994 { $$ = $1->addQualifiers( $2 ); }
1995 ;
1996
1997type_name:
[4d51835]1998 TYPEDEFname
1999 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]2000 | '.' TYPEDEFname
[47498bd]2001 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]2002 | type_name '.' TYPEDEFname
[c5d7701]2003 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]2004 | typegen_name
2005 | '.' typegen_name
[47498bd]2006 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]2007 | type_name '.' typegen_name
[c5d7701]2008 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]2009 ;
2010
2011typegen_name: // CFA
[65d6de4]2012 TYPEGENname
2013 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2014 | TYPEGENname '(' ')'
[67cf18c]2015 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2016 | TYPEGENname '(' type_list ')'
[84d58c5]2017 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2018 ;
[51b73452]2019
[d0ffed1]2020elaborated_type: // struct, union, enum
[c0aa336]2021 aggregate_type
2022 | enum_type
[4d51835]2023 ;
[51b73452]2024
[d0ffed1]2025elaborated_type_nobody: // struct, union, enum - {...}
2026 aggregate_type_nobody
2027 | enum_type_nobody
2028 ;
2029
2030aggregate_type: // struct, union
[fc20514]2031 aggregate_key attribute_list_opt
2032 { forall = false; } // reset
2033 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2034 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[73f04fd]2035 | aggregate_key attribute_list_opt identifier
[fdca7c6]2036 {
[26ef3b2]2037 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2038 forall = false; // reset
2039 }
[284da8c]2040 '{' field_declaration_list_opt '}' type_parameters_opt
[73f04fd]2041 { $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 ); }
[f9c3100]2042 | aggregate_key attribute_list_opt TYPEDEFname // unqualified type name
[407bde5]2043 {
[f9c3100]2044 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2045 forall = false; // reset
2046 }
[284da8c]2047 '{' field_declaration_list_opt '}' type_parameters_opt
[f9c3100]2048 {
2049 DeclarationNode::newFromTypedef( $3 );
2050 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2051 }
2052 | aggregate_key attribute_list_opt TYPEGENname // unqualified type name
2053 {
2054 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
2055 forall = false; // reset
2056 }
2057 '{' field_declaration_list_opt '}' type_parameters_opt
2058 {
2059 DeclarationNode::newFromTypeGen( $3, nullptr );
2060 $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 );
2061 }
[d0ffed1]2062 | aggregate_type_nobody
2063 ;
2064
[284da8c]2065type_parameters_opt:
2066 // empty
2067 { $$ = nullptr; } %prec '}'
2068 | '(' type_list ')'
2069 { $$ = $2; }
2070 ;
2071
[d0ffed1]2072aggregate_type_nobody: // struct, union - {...}
[73f04fd]2073 aggregate_key attribute_list_opt identifier
[84d58c5]2074 {
[26ef3b2]2075 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2076 forall = false; // reset
[84d58c5]2077 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2078 }
[73f04fd]2079 | aggregate_key attribute_list_opt type_name
[65d6de4]2080 {
[fc20514]2081 forall = false; // reset
[65d6de4]2082 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2083 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2084 // delete newFromTypeGen.
2085 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2086 $3->type->symbolic.name = nullptr;
2087 $3->type->symbolic.actuals = nullptr;
2088 delete $3;
2089 }
[4d51835]2090 ;
[51b73452]2091
2092aggregate_key:
[e307e12]2093 aggregate_data
2094 | aggregate_control
2095 ;
2096
2097aggregate_data:
[c0aa336]2098 STRUCT
[312029a]2099 { yyy = true; $$ = AggregateDecl::Struct; }
[c0aa336]2100 | UNION
[312029a]2101 { yyy = true; $$ = AggregateDecl::Union; }
[e307e12]2102 | EXCEPTION // CFA
[25744d2]2103 // { yyy = true; $$ = AggregateDecl::Exception; }
2104 { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2105 ;
2106
2107aggregate_control: // CFA
[cbbd8fd7]2108 MONITOR
2109 { yyy = true; $$ = AggregateDecl::Monitor; }
2110 | MUTEX STRUCT
2111 { yyy = true; $$ = AggregateDecl::Monitor; }
2112 | GENERATOR
[427854b]2113 { yyy = true; $$ = AggregateDecl::Generator; }
[cbbd8fd7]2114 | MUTEX GENERATOR
[aeb5d0d]2115 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2116 | COROUTINE
[312029a]2117 { yyy = true; $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2118 | MUTEX COROUTINE
[aeb5d0d]2119 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2120 | THREAD
[312029a]2121 { yyy = true; $$ = AggregateDecl::Thread; }
[cbbd8fd7]2122 | MUTEX THREAD
[aeb5d0d]2123 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2124 ;
[51b73452]2125
[7fdb94e1]2126field_declaration_list_opt:
[5d125e4]2127 // empty
[58dd019]2128 { $$ = nullptr; }
[7fdb94e1]2129 | field_declaration_list_opt field_declaration
[a7741435]2130 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2131 ;
[51b73452]2132
2133field_declaration:
[679e644]2134 type_specifier field_declaring_list_opt ';'
[f7e4db27]2135 { $$ = fieldDecl( $1, $2 ); }
[679e644]2136 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2137 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2138 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2139 {
[dea36ee]2140 if ( ! $3 ) { // field declarator ?
2141 $3 = DeclarationNode::newName( nullptr );
2142 } // if
[679a260]2143 $3->inLine = true;
[679e644]2144 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2145 distInl( $3 );
[8f91c9ae]2146 }
[e307e12]2147 | INLINE aggregate_control ';' // CFA
2148 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2149 | typedef_declaration ';' // CFA
2150 | cfa_field_declaring_list ';' // CFA, new style field declaration
2151 | EXTENSION cfa_field_declaring_list ';' // GCC
2152 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2153 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2154 { $$ = $2; } // mark all fields in list
[46fa473]2155 | cfa_typedef_declaration ';' // CFA
[b47b827]2156 | static_assert // C11
[4d51835]2157 ;
[b87a5ed]2158
[679e644]2159field_declaring_list_opt:
2160 // empty
2161 { $$ = nullptr; }
2162 | field_declarator
2163 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2164 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2165 ;
[51b73452]2166
[679e644]2167field_declarator:
[e07caa2]2168 bit_subrange_size // C special case, no field name
[4d51835]2169 { $$ = DeclarationNode::newBitfield( $1 ); }
2170 | variable_declarator bit_subrange_size_opt
[679e644]2171 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2172 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2173 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2174 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2175 { $$ = $1->addBitfield( $2 ); }
[679e644]2176 ;
2177
[e07caa2]2178field_abstract_list_opt:
2179 // empty
[dea36ee]2180 { $$ = nullptr; }
[e07caa2]2181 | field_abstract
2182 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2183 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2184 ;
2185
[e07caa2]2186field_abstract:
[f7e4db27]2187 // no bit fields
[e07caa2]2188 variable_abstract_declarator
[679e644]2189 ;
2190
2191cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2192 // bit-fields are handled by C declarations
[033ff37]2193 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2194 { $$ = $1->addName( $2 ); }
[033ff37]2195 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2196 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2197 ;
2198
2199cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2200 // bit-fields are handled by C declarations
[679e644]2201 cfa_abstract_declarator_tuple
2202 | cfa_field_abstract_list ','
2203 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2204 ;
[51b73452]2205
2206bit_subrange_size_opt:
[4d51835]2207 // empty
[58dd019]2208 { $$ = nullptr; }
[4d51835]2209 | bit_subrange_size
2210 ;
[51b73452]2211
2212bit_subrange_size:
[c786e1d]2213 ':' assignment_expression
[4d51835]2214 { $$ = $2; }
2215 ;
[51b73452]2216
[d0ffed1]2217enum_type: // enum
[f9c3100]2218 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2219 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[f9c3100]2220 | ENUM attribute_list_opt identifier
[d0ffed1]2221 { typedefTable.makeTypedef( *$3 ); }
2222 '{' enumerator_list comma_opt '}'
2223 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[f9c3100]2224 | ENUM attribute_list_opt typedef_name // unqualified type name
[407bde5]2225 '{' enumerator_list comma_opt '}'
[408ab79]2226 { $$ = DeclarationNode::newEnum( $3->name, $5, true )->addQualifiers( $2 ); }
[f9c3100]2227 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt '{' enumerator_list comma_opt '}'
2228 // { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
2229 { $$ = nullptr; }
2230 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt identifier attribute_list_opt '{' enumerator_list comma_opt '}'
2231 // { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
2232 { typedefTable.makeTypedef( *$6 ); }
2233 | ENUM '(' cfa_abstract_parameter_declaration ')' attribute_list_opt typedef_name attribute_list_opt '{' enumerator_list comma_opt '}'
2234 // { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
2235 { typedefTable.makeTypedef( *$6->name ); }
[d0ffed1]2236 | enum_type_nobody
2237 ;
2238
2239enum_type_nobody: // enum - {...}
[f9c3100]2240 ENUM attribute_list_opt identifier
2241 { typedefTable.makeTypedef( *$3 ); $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 ); }
2242 | ENUM attribute_list_opt type_name // qualified type name
2243 { typedefTable.makeTypedef( *$3->type->symbolic.name ); $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 ); }
[4d51835]2244 ;
[51b73452]2245
2246enumerator_list:
[033ff37]2247 identifier_or_type_name enumerator_value_opt
[4d51835]2248 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[f9c3100]2249 | INLINE type_name
2250 { $$ = DeclarationNode::newEnumConstant( new string("inline"), nullptr ); }
[033ff37]2251 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[4d51835]2252 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
[f9c3100]2253 | enumerator_list ',' INLINE type_name enumerator_value_opt
2254 { $$ = $1->appendList( DeclarationNode::newEnumConstant( new string("inline"), nullptr ) ); }
[4d51835]2255 ;
[51b73452]2256
2257enumerator_value_opt:
[4d51835]2258 // empty
[58dd019]2259 { $$ = nullptr; }
[408ab79]2260 // | '=' constant_expression
2261 // { $$ = $2; }
[f9c3100]2262 | simple_assignment_operator initializer
[408ab79]2263 { $$ = $2->get_expression(); } // FIX ME: enum only deals with constant_expression
[4d51835]2264 ;
[51b73452]2265
[5a51798]2266cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2267 // empty
[2a8427c6]2268 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2269 | ELLIPSIS
[58dd019]2270 { $$ = nullptr; }
[2a8427c6]2271 | cfa_abstract_parameter_list
[c0aa336]2272 | cfa_parameter_list
[c0a33d2]2273 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2274 { $$ = $1->appendList( $5 ); }
2275 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2276 { $$ = $1->addVarArgs(); }
[c0a33d2]2277 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2278 { $$ = $1->addVarArgs(); }
2279 ;
[b87a5ed]2280
[c0aa336]2281cfa_parameter_list: // CFA
2282 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2283 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2284 cfa_parameter_declaration
[c0a33d2]2285 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2286 { $$ = $1->appendList( $5 ); }
2287 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2288 { $$ = $1->appendList( $5 ); }
2289 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2290 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2291 ;
[b87a5ed]2292
[c0aa336]2293cfa_abstract_parameter_list: // CFA, new & old style abstract
2294 cfa_abstract_parameter_declaration
[c0a33d2]2295 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2296 { $$ = $1->appendList( $5 ); }
[4d51835]2297 ;
[51b73452]2298
2299parameter_type_list_opt:
[4d51835]2300 // empty
[58dd019]2301 { $$ = nullptr; }
[2a8427c6]2302 | ELLIPSIS
2303 { $$ = nullptr; }
2304 | parameter_list
[4d51835]2305 | parameter_list pop ',' push ELLIPSIS
2306 { $$ = $1->addVarArgs(); }
2307 ;
[b87a5ed]2308
2309parameter_list: // abstract + real
[4d51835]2310 abstract_parameter_declaration
2311 | parameter_declaration
2312 | parameter_list pop ',' push abstract_parameter_declaration
2313 { $$ = $1->appendList( $5 ); }
2314 | parameter_list pop ',' push parameter_declaration
2315 { $$ = $1->appendList( $5 ); }
2316 ;
[51b73452]2317
[de62360d]2318// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2319// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2320
[c0aa336]2321cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2322 parameter_declaration
[5a51798]2323 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2324 { $$ = $1->addName( $2 ); }
[5a51798]2325 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2326 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2327 { $$ = $1->addName( $2 ); }
[5a51798]2328 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2329 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2330 | cfa_function_specifier
[4d51835]2331 ;
[b87a5ed]2332
[c0aa336]2333cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2334 abstract_parameter_declaration
[c0aa336]2335 | cfa_identifier_parameter_declarator_no_tuple
2336 | cfa_abstract_tuple
2337 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2338 | type_qualifier_list cfa_abstract_tuple
[4d51835]2339 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2340 | cfa_abstract_function
[4d51835]2341 ;
[51b73452]2342
2343parameter_declaration:
[d0ffed1]2344 // No SUE declaration in parameter list.
[5a51798]2345 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2346 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2347 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2348 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2349 ;
[51b73452]2350
2351abstract_parameter_declaration:
[5a51798]2352 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2353 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2354 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2355 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2356 ;
[51b73452]2357
[c11e31c]2358// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2359// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2360// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2361
[b87a5ed]2362identifier_list: // K&R-style parameter list => no types
[033ff37]2363 identifier
[4d51835]2364 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2365 | identifier_list ',' identifier
[4d51835]2366 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2367 ;
[51b73452]2368
[2871210]2369identifier_or_type_name:
[4d51835]2370 identifier
2371 | TYPEDEFname
2372 | TYPEGENname
2373 ;
[51b73452]2374
[84d58c5]2375type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2376 cfa_abstract_declarator_tuple // CFA
[4d51835]2377 | type_specifier
[c0aa336]2378 | type_specifier abstract_declarator
[4d51835]2379 { $$ = $2->addType( $1 ); }
2380 ;
[b87a5ed]2381
[84d58c5]2382type: // typeof, assertion
2383 type_no_function
[c0aa336]2384 | cfa_abstract_function // CFA
[4d51835]2385 ;
[51b73452]2386
2387initializer_opt:
[4d51835]2388 // empty
[58dd019]2389 { $$ = nullptr; }
[f9c3100]2390 | simple_assignment_operator initializer { $$ = $1 == OperKinds::Assign ? $2 : $2->set_maybeConstructed( false ); }
2391 | '=' VOID { $$ = new InitializerNode( true ); }
[4d51835]2392 ;
[51b73452]2393
2394initializer:
[de62360d]2395 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2396 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2397 ;
[51b73452]2398
[7fdb94e1]2399initializer_list_opt:
[097e2b0]2400 // empty
[58dd019]2401 { $$ = nullptr; }
[097e2b0]2402 | initializer
[4d51835]2403 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2404 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2405 | initializer_list_opt ',' designation initializer
[4a063df]2406 { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2407 ;
[b87a5ed]2408
[de62360d]2409// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2410// '=' to separator the designator from the initializer value, as in:
[c11e31c]2411//
[b87a5ed]2412// int x[10] = { [1] = 3 };
[c11e31c]2413//
[de62360d]2414// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2415// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2416// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2417// shift/reduce conflicts
[51b73452]2418
2419designation:
[4d51835]2420 designator_list ':' // C99, CFA uses ":" instead of "="
[033ff37]2421 | identifier ':' // GCC, field name
[d1625f8]2422 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2423 ;
[51b73452]2424
[b87a5ed]2425designator_list: // C99
[4d51835]2426 designator
[2871210]2427 | designator_list designator
[4a063df]2428 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2429 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2430 ;
[51b73452]2431
2432designator:
[033ff37]2433 '.' identifier // C99, field name
[d1625f8]2434 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2435 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2436 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2437 { $$ = $3; }
[c0a33d2]2438 | '[' push subrange pop ']' // CFA, multiple array elements
2439 { $$ = $3; }
2440 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2441 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2442 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2443 { $$ = $4; }
[4d51835]2444 ;
[51b73452]2445
[de62360d]2446// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2447// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2448//
2449// Overloading: function, data, and operator identifiers may be overloaded.
2450//
[3ca7ef3]2451// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2452// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2453// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2454//
[de62360d]2455// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2456// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2457//
2458// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2459// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2460// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2461// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2462// on type arguments of polymorphic functions.
[c11e31c]2463
[b87a5ed]2464type_parameter_list: // CFA
[67cf18c]2465 type_parameter
2466 | type_parameter_list ',' type_parameter
[4d51835]2467 { $$ = $1->appendList( $3 ); }
2468 ;
[b87a5ed]2469
[84d58c5]2470type_initializer_opt: // CFA
2471 // empty
2472 { $$ = nullptr; }
2473 | '=' type
2474 { $$ = $2; }
2475 ;
2476
[b87a5ed]2477type_parameter: // CFA
[033ff37]2478 type_class identifier_or_type_name
[408ab79]2479 {
2480 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[ec3f9c8]2481 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated, use T " ); }
2482 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated, use T &" ); }
2483 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated, use T ..." ); }
[fd54fef]2484 }
[5a51798]2485 type_initializer_opt assertion_list_opt
[67cf18c]2486 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2487 | identifier_or_type_name new_type_class
2488 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2489 type_initializer_opt assertion_list_opt
2490 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2491 | '[' identifier_or_type_name ']'
[b66d14a]2492 {
2493 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
2494 $$ = DeclarationNode::newTypeParam( TypeDecl::ALtype, $2 );
2495 }
[5a51798]2496 // | type_specifier identifier_parameter_declarator
[9997fee]2497 | assertion_list
[07de76b]2498 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2499 ;
[b87a5ed]2500
[5a51798]2501new_type_class: // CFA
2502 // empty
2503 { $$ = TypeDecl::Otype; }
2504 | '&'
2505 { $$ = TypeDecl::Dtype; }
2506 | '*'
[b66d14a]2507 { $$ = TypeDecl::DStype; } // dtype + sized
[5a51798]2508 | ELLIPSIS
2509 { $$ = TypeDecl::Ttype; }
2510 ;
2511
[b87a5ed]2512type_class: // CFA
[4040425]2513 OTYPE
[07de76b]2514 { $$ = TypeDecl::Otype; }
[4d51835]2515 | DTYPE
[07de76b]2516 { $$ = TypeDecl::Dtype; }
[8f60f0b]2517 | FTYPE
[07de76b]2518 { $$ = TypeDecl::Ftype; }
[8f60f0b]2519 | TTYPE
[07de76b]2520 { $$ = TypeDecl::Ttype; }
[4d51835]2521 ;
[b87a5ed]2522
2523assertion_list_opt: // CFA
[4d51835]2524 // empty
[58dd019]2525 { $$ = nullptr; }
[9997fee]2526 | assertion_list
2527 ;
2528
2529assertion_list: // CFA
2530 assertion
2531 | assertion_list assertion
[3ca7ef3]2532 { $$ = $1->appendList( $2 ); }
[4d51835]2533 ;
[b87a5ed]2534
2535assertion: // CFA
[033ff37]2536 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2537 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2538 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2539 { $$ = $4; }
[35718a9]2540 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2541 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2542 ;
[b87a5ed]2543
[84d58c5]2544type_list: // CFA
2545 type
[513e165]2546 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2547 | assignment_expression
[3007c0b]2548 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $1->build()) ); $$ = nullptr; }
[84d58c5]2549 | type_list ',' type
[4a063df]2550 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2551 | type_list ',' assignment_expression
[3007c0b]2552 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $3->build()) ); $$ = nullptr; }
2553 // { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2554 ;
[b87a5ed]2555
2556type_declaring_list: // CFA
[4040425]2557 OTYPE type_declarator
[4d51835]2558 { $$ = $2; }
[4040425]2559 | storage_class_list OTYPE type_declarator
[4d51835]2560 { $$ = $3->addQualifiers( $1 ); }
2561 | type_declaring_list ',' type_declarator
[a7c90d4]2562 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2563 ;
[b87a5ed]2564
2565type_declarator: // CFA
[4d51835]2566 type_declarator_name assertion_list_opt
2567 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2568 | type_declarator_name assertion_list_opt '=' type
[4d51835]2569 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2570 ;
[b87a5ed]2571
2572type_declarator_name: // CFA
[033ff37]2573 identifier_or_type_name
[4d51835]2574 {
[ecae5860]2575 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2576 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2577 }
[033ff37]2578 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2579 {
[ecae5860]2580 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2581 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2582 }
2583 ;
[b87a5ed]2584
[4040425]2585trait_specifier: // CFA
[033ff37]2586 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2587 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2588 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2589 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2590 ;
[b87a5ed]2591
[84d58c5]2592trait_declaration_list: // CFA
[4040425]2593 trait_declaration
[13e8427]2594 | trait_declaration_list pop push trait_declaration
2595 { $$ = $1->appendList( $4 ); }
[4d51835]2596 ;
[b87a5ed]2597
[84d58c5]2598trait_declaration: // CFA
[13e8427]2599 cfa_trait_declaring_list ';'
2600 | trait_declaring_list ';'
[4d51835]2601 ;
[b87a5ed]2602
[c0aa336]2603cfa_trait_declaring_list: // CFA
2604 cfa_variable_specifier
2605 | cfa_function_specifier
2606 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2607 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2608 ;
[b87a5ed]2609
[4040425]2610trait_declaring_list: // CFA
[4d51835]2611 type_specifier declarator
[7fdb94e1]2612 { $$ = $2->addType( $1 ); }
[4040425]2613 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2614 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2615 ;
[51b73452]2616
[c11e31c]2617//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2618
2619translation_unit:
[3d56d15b]2620 // empty, input file
[4d51835]2621 | external_definition_list
[a7741435]2622 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2623 ;
[51b73452]2624
2625external_definition_list:
[35718a9]2626 push external_definition pop
2627 { $$ = $2; }
[fc20514]2628 | external_definition_list push external_definition pop
2629 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2630 ;
[51b73452]2631
2632external_definition_list_opt:
[4d51835]2633 // empty
[58dd019]2634 { $$ = nullptr; }
[3d56d15b]2635 | external_definition_list
2636 ;
2637
2638up:
[fc20514]2639 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2640 ;
2641
2642down:
2643 { typedefTable.down(); }
[4d51835]2644 ;
[51b73452]2645
2646external_definition:
[2d019af]2647 DIRECTIVE
2648 { $$ = DeclarationNode::newDirectiveStmt( new StatementNode( build_directive( $1 ) ) ); }
2649 | declaration
[4d51835]2650 | external_function_definition
[ecae5860]2651 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2652 {
2653 distExt( $2 ); // mark all fields in list
2654 $$ = $2;
2655 }
[e994912]2656 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
[5e25953]2657 { $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) ); }
[c0aa336]2658 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2659 {
[3b8e52c]2660 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2661 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2662 }
[3d56d15b]2663 '{' up external_definition_list_opt down '}'
[4d51835]2664 {
2665 linkage = linkageStack.top();
2666 linkageStack.pop();
[3d56d15b]2667 $$ = $6;
[8e9cbb2]2668 }
[9997fee]2669 | type_qualifier_list
2670 {
[3d56d15b]2671 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2672 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2673 }
2674 '{' up external_definition_list_opt down '}' // CFA, namespace
2675 {
[4c3ee8d]2676 distQual( $5, $1 );
[fc20514]2677 forall = false;
[3d56d15b]2678 $$ = $5;
[9997fee]2679 }
2680 | declaration_qualifier_list
2681 {
[4c3ee8d]2682 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2683 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2684 }
2685 '{' up external_definition_list_opt down '}' // CFA, namespace
2686 {
[4c3ee8d]2687 distQual( $5, $1 );
[fc20514]2688 forall = false;
[3d56d15b]2689 $$ = $5;
[9997fee]2690 }
2691 | declaration_qualifier_list type_qualifier_list
2692 {
[3d56d15b]2693 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]2694 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2695 }
[3d56d15b]2696 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2697 {
[284da8c]2698 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2699 forall = false;
[3d56d15b]2700 $$ = $6;
[9997fee]2701 }
[4d51835]2702 ;
2703
2704external_function_definition:
2705 function_definition
[de62360d]2706 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2707 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2708 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2709 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2710 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2711 | function_declarator compound_statement
[c0a33d2]2712 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2713 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2714 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2715 ;
[51b73452]2716
[8b47e50]2717with_clause_opt:
2718 // empty
[9997fee]2719 { $$ = nullptr; forall = false; }
[578e6037]2720 | WITH '(' tuple_expression_list ')'
[9997fee]2721 { $$ = $3; forall = false; }
[8b47e50]2722 ;
2723
[51b73452]2724function_definition:
[8b47e50]2725 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2726 {
[481115f]2727 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2728 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2729 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2730 $$ = $1;
[4d51835]2731 }
[8b47e50]2732 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2733 {
[c38ae92]2734 rebindForall( $1, $2 );
[7fdb94e1]2735 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2736 }
2737 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2738 {
2739 rebindForall( $1, $2 );
[5fcba14]2740 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2741 }
[a16a7ec]2742 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2743 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2744 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2745 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2746 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2747 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2748 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2749 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2750 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2751
2752 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2753 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2754 {
[c38ae92]2755 rebindForall( $1, $2 );
[5fcba14]2756 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2757 }
[a16a7ec]2758 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2759 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2760 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2761 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2762 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2763 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2764 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2765 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2766 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2767 ;
[51b73452]2768
2769declarator:
[4d51835]2770 variable_declarator
[c6b1105]2771 | variable_type_redeclarator
[4d51835]2772 | function_declarator
2773 ;
[51b73452]2774
2775subrange:
[4d51835]2776 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]2777 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]2778 ;
[b87a5ed]2779
2780asm_name_opt: // GCC
[4d51835]2781 // empty
[58dd019]2782 { $$ = nullptr; }
2783 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2784 {
2785 DeclarationNode * name = new DeclarationNode();
2786 name->asmName = $3;
2787 $$ = name->addQualifiers( $5 );
2788 }
[4d51835]2789 ;
[b87a5ed]2790
2791attribute_list_opt: // GCC
[4d51835]2792 // empty
[58dd019]2793 { $$ = nullptr; }
[4d51835]2794 | attribute_list
2795 ;
[b87a5ed]2796
2797attribute_list: // GCC
[4d51835]2798 attribute
2799 | attribute_list attribute
[1db21619]2800 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2801 ;
[b87a5ed]2802
2803attribute: // GCC
[44a81853]2804 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2805 { $$ = $4; }
[4d51835]2806 ;
[b87a5ed]2807
[44a81853]2808attribute_name_list: // GCC
2809 attribute_name
2810 | attribute_name_list ',' attribute_name
[c0aa336]2811 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2812 ;
[b87a5ed]2813
[44a81853]2814attribute_name: // GCC
[4d51835]2815 // empty
[44a81853]2816 { $$ = nullptr; }
2817 | attr_name
2818 { $$ = DeclarationNode::newAttribute( $1 ); }
[cbbd8fd7]2819 | attr_name '(' argument_expression_list_opt ')'
[44a81853]2820 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2821 ;
[b87a5ed]2822
[44a81853]2823attr_name: // GCC
2824 IDENTIFIER
[5b2edbc]2825 | quasi_keyword
[44a81853]2826 | TYPEDEFname
2827 | TYPEGENname
[114014c]2828 | FALLTHROUGH
2829 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2830 | CONST
[9ff56e7]2831 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2832 ;
[51b73452]2833
[c11e31c]2834// ============================================================================
[de62360d]2835// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2836// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2837// in:
[c11e31c]2838//
[b87a5ed]2839// int (*f())[10] { ... };
2840// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2841//
[de62360d]2842// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2843// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2844// ============================================================================
2845
2846// ----------------------------------------------------------------------------
[de62360d]2847// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2848// to define a variable or function prototype, e.g.:
[c11e31c]2849//
[b87a5ed]2850// valid declaration invalid definition
2851// ----------------- ------------------
[4d51835]2852// int f; int f {}
2853// int *f; int *f {}
[b87a5ed]2854// int f[10]; int f[10] {}
[4d51835]2855// int (*f)(int); int (*f)(int) {}
[c11e31c]2856//
[de62360d]2857// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2858// variable_declarator and function_declarator.
[c11e31c]2859// ----------------------------------------------------------------------------
2860
[de62360d]2861// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2862// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2863
[5e25953]2864paren_identifier:
2865 identifier
2866 { $$ = DeclarationNode::newName( $1 ); }
2867 | '(' paren_identifier ')' // redundant parenthesis
2868 { $$ = $2; }
2869 ;
2870
[51b73452]2871variable_declarator:
[4d51835]2872 paren_identifier attribute_list_opt
[1db21619]2873 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2874 | variable_ptr
2875 | variable_array attribute_list_opt
[1db21619]2876 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2877 | variable_function attribute_list_opt
[1db21619]2878 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2879 ;
[51b73452]2880
2881variable_ptr:
[dd51906]2882 ptrref_operator variable_declarator
[ce8c12f]2883 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2884 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2885 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]2886 | '(' variable_ptr ')' attribute_list_opt // redundant parenthesis
2887 { $$ = $2->addQualifiers( $4 ); }
2888 | '(' attribute_list variable_ptr ')' attribute_list_opt // redundant parenthesis
2889 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]2890 ;
[51b73452]2891
2892variable_array:
[4d51835]2893 paren_identifier array_dimension
2894 { $$ = $1->addArray( $2 ); }
2895 | '(' variable_ptr ')' array_dimension
2896 { $$ = $2->addArray( $4 ); }
[5e25953]2897 | '(' attribute_list variable_ptr ')' array_dimension
2898 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
2899 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2900 { $$ = $2->addArray( $4 ); }
[5e25953]2901 | '(' attribute_list variable_array ')' multi_array_dimension // redundant parenthesis
2902 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]2903 | '(' variable_array ')' // redundant parenthesis
2904 { $$ = $2; }
[5e25953]2905 | '(' attribute_list variable_array ')' // redundant parenthesis
2906 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2907 ;
[51b73452]2908
2909variable_function:
[4d51835]2910 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2911 { $$ = $2->addParamList( $6 ); }
[5e25953]2912 | '(' attribute_list variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2913 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]2914 | '(' variable_function ')' // redundant parenthesis
2915 { $$ = $2; }
[5e25953]2916 | '(' attribute_list variable_function ')' // redundant parenthesis
2917 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2918 ;
[51b73452]2919
[c6b1105]2920// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2921// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2922// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2923
2924function_declarator:
[4d51835]2925 function_no_ptr attribute_list_opt
[1db21619]2926 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2927 | function_ptr
2928 | function_array attribute_list_opt
[1db21619]2929 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2930 ;
[51b73452]2931
2932function_no_ptr:
[4d51835]2933 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2934 { $$ = $1->addParamList( $4 ); }
2935 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2936 { $$ = $2->addParamList( $6 ); }
[5e25953]2937 | '(' attribute_list function_ptr ')' '(' push parameter_type_list_opt pop ')'
2938 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[4d51835]2939 | '(' function_no_ptr ')' // redundant parenthesis
2940 { $$ = $2; }
[5e25953]2941 | '(' attribute_list function_no_ptr ')' // redundant parenthesis
2942 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2943 ;
[51b73452]2944
2945function_ptr:
[dd51906]2946 ptrref_operator function_declarator
[ce8c12f]2947 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2948 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]2949 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]2950 | '(' function_ptr ')' attribute_list_opt
2951 { $$ = $2->addQualifiers( $4 ); }
2952 | '(' attribute_list function_ptr ')' attribute_list_opt
2953 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]2954 ;
[51b73452]2955
2956function_array:
[4d51835]2957 '(' function_ptr ')' array_dimension
2958 { $$ = $2->addArray( $4 ); }
[5e25953]2959 | '(' attribute_list function_ptr ')' array_dimension
2960 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]2961 | '(' function_array ')' multi_array_dimension // redundant parenthesis
2962 { $$ = $2->addArray( $4 ); }
[5e25953]2963 | '(' attribute_list function_array ')' multi_array_dimension // redundant parenthesis
2964 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[4d51835]2965 | '(' function_array ')' // redundant parenthesis
2966 { $$ = $2; }
[5e25953]2967 | '(' attribute_list function_array ')' // redundant parenthesis
2968 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2969 ;
[51b73452]2970
[c0aa336]2971// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2972//
2973// f( a, b, c ) int a, *b, c[]; {}
2974//
2975// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2976// returning arrays and functions versus pointers to arrays and functions.
[51b73452]2977
[c0aa336]2978KR_function_declarator:
2979 KR_function_no_ptr
2980 | KR_function_ptr
2981 | KR_function_array
[4d51835]2982 ;
[51b73452]2983
[c0aa336]2984KR_function_no_ptr:
[4d51835]2985 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2986 { $$ = $1->addIdList( $3 ); }
[c0a33d2]2987 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2988 { $$ = $2->addParamList( $6 ); }
[5e25953]2989 | '(' attribute_list KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2990 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[c0aa336]2991 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]2992 { $$ = $2; }
[5e25953]2993 | '(' attribute_list KR_function_no_ptr ')' // redundant parenthesis
2994 { $$ = $3->addQualifiers( $2 ); }
[4d51835]2995 ;
[51b73452]2996
[c0aa336]2997KR_function_ptr:
2998 ptrref_operator KR_function_declarator
[ce8c12f]2999 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3000 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]3001 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3002 | '(' KR_function_ptr ')'
[4d51835]3003 { $$ = $2; }
[5e25953]3004 | '(' attribute_list KR_function_ptr ')'
3005 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3006 ;
[51b73452]3007
[c0aa336]3008KR_function_array:
3009 '(' KR_function_ptr ')' array_dimension
[4d51835]3010 { $$ = $2->addArray( $4 ); }
[5e25953]3011 | '(' attribute_list KR_function_ptr ')' array_dimension
3012 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3013 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3014 { $$ = $2->addArray( $4 ); }
[5e25953]3015 | '(' attribute_list KR_function_array ')' multi_array_dimension // redundant parenthesis
3016 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[c0aa336]3017 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]3018 { $$ = $2; }
[5e25953]3019 | '(' attribute_list KR_function_array ')' // redundant parenthesis
3020 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3021 ;
[51b73452]3022
[2871210]3023// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]3024//
[b87a5ed]3025// typedef int foo;
3026// {
3027// int foo; // redefine typedef name in new scope
3028// }
[c11e31c]3029//
[de62360d]3030// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3031// and functions versus pointers to arrays and functions.
[51b73452]3032
[2871210]3033paren_type:
[f9c3100]3034 typedef_name
[c4f68dc]3035 {
[f9c3100]3036 // hide type name in enclosing scope by variable name
3037 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
[c4f68dc]3038 }
[2871210]3039 | '(' paren_type ')'
[4d51835]3040 { $$ = $2; }
3041 ;
[51b73452]3042
[5e25953]3043variable_type_redeclarator:
3044 paren_type attribute_list_opt
3045 { $$ = $1->addQualifiers( $2 ); }
3046 | type_ptr
3047 | type_array attribute_list_opt
3048 { $$ = $1->addQualifiers( $2 ); }
3049 | type_function attribute_list_opt
3050 { $$ = $1->addQualifiers( $2 ); }
3051 ;
3052
[2871210]3053type_ptr:
[c6b1105]3054 ptrref_operator variable_type_redeclarator
[ce8c12f]3055 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3056 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3057 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3058 | '(' type_ptr ')' attribute_list_opt // redundant parenthesis
3059 { $$ = $2->addQualifiers( $4 ); }
3060 | '(' attribute_list type_ptr ')' attribute_list_opt // redundant parenthesis
3061 { $$ = $3->addQualifiers( $2 )->addQualifiers( $5 ); }
[4d51835]3062 ;
[51b73452]3063
[2871210]3064type_array:
3065 paren_type array_dimension
[4d51835]3066 { $$ = $1->addArray( $2 ); }
[2871210]3067 | '(' type_ptr ')' array_dimension
[4d51835]3068 { $$ = $2->addArray( $4 ); }
[5e25953]3069 | '(' attribute_list type_ptr ')' array_dimension
3070 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3071 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3072 { $$ = $2->addArray( $4 ); }
[5e25953]3073 | '(' attribute_list type_array ')' multi_array_dimension // redundant parenthesis
3074 { $$ = $3->addQualifiers( $2 )->addArray( $5 ); }
[2871210]3075 | '(' type_array ')' // redundant parenthesis
[4d51835]3076 { $$ = $2; }
[5e25953]3077 | '(' attribute_list type_array ')' // redundant parenthesis
3078 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3079 ;
[51b73452]3080
[2871210]3081type_function:
3082 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3083 { $$ = $1->addParamList( $4 ); }
[2871210]3084 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3085 { $$ = $2->addParamList( $6 ); }
[5e25953]3086 | '(' attribute_list type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3087 { $$ = $3->addQualifiers( $2 )->addParamList( $7 ); }
[2871210]3088 | '(' type_function ')' // redundant parenthesis
[4d51835]3089 { $$ = $2; }
[5e25953]3090 | '(' attribute_list type_function ')' // redundant parenthesis
3091 { $$ = $3->addQualifiers( $2 ); }
[4d51835]3092 ;
[51b73452]3093
[c0aa336]3094// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3095// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3096// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3097// pointers to arrays and functions.
[51b73452]3098
3099identifier_parameter_declarator:
[4d51835]3100 paren_identifier attribute_list_opt
[1db21619]3101 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3102 | '&' MUTEX paren_identifier attribute_list_opt
3103 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3104 | identifier_parameter_ptr
3105 | identifier_parameter_array attribute_list_opt
[1db21619]3106 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3107 | identifier_parameter_function attribute_list_opt
[1db21619]3108 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3109 ;
[51b73452]3110
3111identifier_parameter_ptr:
[dd51906]3112 ptrref_operator identifier_parameter_declarator
[ce8c12f]3113 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3114 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3115 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3116 | '(' identifier_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3117 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3118 ;
[51b73452]3119
3120identifier_parameter_array:
[4d51835]3121 paren_identifier array_parameter_dimension
3122 { $$ = $1->addArray( $2 ); }
3123 | '(' identifier_parameter_ptr ')' array_dimension
3124 { $$ = $2->addArray( $4 ); }
3125 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3126 { $$ = $2->addArray( $4 ); }
3127 | '(' identifier_parameter_array ')' // redundant parenthesis
3128 { $$ = $2; }
3129 ;
[51b73452]3130
3131identifier_parameter_function:
[c0a33d2]3132 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3133 { $$ = $1->addParamList( $4 ); }
3134 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3135 { $$ = $2->addParamList( $6 ); }
[4d51835]3136 | '(' identifier_parameter_function ')' // redundant parenthesis
3137 { $$ = $2; }
3138 ;
[b87a5ed]3139
[de62360d]3140// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3141// e.g.:
[c11e31c]3142//
[b87a5ed]3143// typedef int foo;
[114014c]3144// forall( otype T ) struct foo;
[b87a5ed]3145// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3146//
[c0aa336]3147// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3148
[2871210]3149type_parameter_redeclarator:
[f9c3100]3150 typedef_name attribute_list_opt
[1db21619]3151 { $$ = $1->addQualifiers( $2 ); }
[f9c3100]3152 | '&' MUTEX typedef_name attribute_list_opt
[b6b3c42]3153 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3154 | type_parameter_ptr
3155 | type_parameter_array attribute_list_opt
[1db21619]3156 { $$ = $1->addQualifiers( $2 ); }
[2871210]3157 | type_parameter_function attribute_list_opt
[1db21619]3158 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3159 ;
[51b73452]3160
[f9c3100]3161typedef_name:
[4d51835]3162 TYPEDEFname
[7fdb94e1]3163 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3164 | TYPEGENname
[7fdb94e1]3165 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3166 ;
[51b73452]3167
[2871210]3168type_parameter_ptr:
[dd51906]3169 ptrref_operator type_parameter_redeclarator
[ce8c12f]3170 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3171 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3172 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3173 | '(' type_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3174 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3175 ;
[51b73452]3176
[2871210]3177type_parameter_array:
[f9c3100]3178 typedef_name array_parameter_dimension
[4d51835]3179 { $$ = $1->addArray( $2 ); }
[2871210]3180 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3181 { $$ = $2->addArray( $4 ); }
3182 ;
[51b73452]3183
[2871210]3184type_parameter_function:
[f9c3100]3185 typedef_name '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[c0a33d2]3186 { $$ = $1->addParamList( $4 ); }
3187 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3188 { $$ = $2->addParamList( $6 ); }
[4d51835]3189 ;
[b87a5ed]3190
[de62360d]3191// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3192// which the type applies, e.g.:
[c11e31c]3193//
[b87a5ed]3194// sizeof( int );
[c0aa336]3195// sizeof( int * );
[b87a5ed]3196// sizeof( int [10] );
[c0aa336]3197// sizeof( int (*)() );
3198// sizeof( int () );
[c11e31c]3199//
[de62360d]3200// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3201// and functions versus pointers to arrays and functions.
[51b73452]3202
3203abstract_declarator:
[4d51835]3204 abstract_ptr
3205 | abstract_array attribute_list_opt
[1db21619]3206 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3207 | abstract_function attribute_list_opt
[1db21619]3208 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3209 ;
[51b73452]3210
3211abstract_ptr:
[dd51906]3212 ptrref_operator
[ce8c12f]3213 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3214 | ptrref_operator type_qualifier_list
[ce8c12f]3215 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3216 | ptrref_operator abstract_declarator
[ce8c12f]3217 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3218 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3219 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3220 | '(' abstract_ptr ')' attribute_list_opt
3221 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3222 ;
[51b73452]3223
3224abstract_array:
[4d51835]3225 array_dimension
3226 | '(' abstract_ptr ')' array_dimension
3227 { $$ = $2->addArray( $4 ); }
3228 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3229 { $$ = $2->addArray( $4 ); }
3230 | '(' abstract_array ')' // redundant parenthesis
3231 { $$ = $2; }
3232 ;
[51b73452]3233
3234abstract_function:
[c0a33d2]3235 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3236 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3237 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3238 { $$ = $2->addParamList( $6 ); }
[4d51835]3239 | '(' abstract_function ')' // redundant parenthesis
3240 { $$ = $2; }
3241 ;
[51b73452]3242
3243array_dimension:
[4d51835]3244 // Only the first dimension can be empty.
[2871210]3245 '[' ']'
[4d51835]3246 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3247 | '[' ']' multi_array_dimension
3248 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[6a99803]3249 | '[' push assignment_expression pop ',' comma_expression ']'
3250 { $$ = DeclarationNode::newArray( $3, 0, false )->addArray( DeclarationNode::newArray( $6, 0, false ) ); }
3251 // { SemanticError( yylloc, "New array dimension is currently unimplemented." ); $$ = nullptr; }
[4d51835]3252 | multi_array_dimension
3253 ;
[51b73452]3254
3255multi_array_dimension:
[c0a33d2]3256 '[' push assignment_expression pop ']'
3257 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3258 | '[' push '*' pop ']' // C99
[4d51835]3259 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3260 | multi_array_dimension '[' push assignment_expression pop ']'
3261 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3262 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3263 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3264 ;
[51b73452]3265
[c11e31c]3266// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3267// identifier to which the type applies, e.g.:
3268//
[c0aa336]3269// int f( int ); // not handled here
3270// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3271// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3272// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3273//
[de62360d]3274// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3275// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3276// special meaning of parenthesis around a typedef name:
3277//
3278// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3279// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3280// not as redundant parentheses around the identifier."
3281//
3282// For example:
3283//
3284// typedef float T;
3285// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3286// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3287// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3288// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3289//
3290// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3291// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3292// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3293// functions.
[51b73452]3294
3295abstract_parameter_declarator:
[4d51835]3296 abstract_parameter_ptr
[b6b3c42]3297 | '&' MUTEX attribute_list_opt
3298 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3299 | abstract_parameter_array attribute_list_opt
[1db21619]3300 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3301 | abstract_parameter_function attribute_list_opt
[1db21619]3302 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3303 ;
[51b73452]3304
3305abstract_parameter_ptr:
[dd51906]3306 ptrref_operator
[ce8c12f]3307 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3308 | ptrref_operator type_qualifier_list
[ce8c12f]3309 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3310 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3311 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3312 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3313 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3314 | '(' abstract_parameter_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3315 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3316 ;
[51b73452]3317
3318abstract_parameter_array:
[4d51835]3319 array_parameter_dimension
3320 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3321 { $$ = $2->addArray( $4 ); }
3322 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3323 { $$ = $2->addArray( $4 ); }
3324 | '(' abstract_parameter_array ')' // redundant parenthesis
3325 { $$ = $2; }
3326 ;
[51b73452]3327
3328abstract_parameter_function:
[c0a33d2]3329 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3330 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3331 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3332 { $$ = $2->addParamList( $6 ); }
[4d51835]3333 | '(' abstract_parameter_function ')' // redundant parenthesis
3334 { $$ = $2; }
3335 ;
[51b73452]3336
3337array_parameter_dimension:
[4d51835]3338 // Only the first dimension can be empty or have qualifiers.
3339 array_parameter_1st_dimension
3340 | array_parameter_1st_dimension multi_array_dimension
3341 { $$ = $1->addArray( $2 ); }
3342 | multi_array_dimension
3343 ;
[51b73452]3344
[c11e31c]3345// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3346//
[de62360d]3347// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3348// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3349
3350array_parameter_1st_dimension:
[2871210]3351 '[' ']'
[4d51835]3352 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3353 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3354 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3355 { $$ = DeclarationNode::newVarArray( $3 ); }
3356 | '[' push type_qualifier_list pop ']'
3357 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3358 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3359 | '[' push type_qualifier_list assignment_expression pop ']'
3360 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3361 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3362 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3363 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3364 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3365 ;
[b87a5ed]3366
[c0aa336]3367// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3368//
[c0aa336]3369// struct S {
3370// int;
3371// int *;
3372// int [10];
3373// int (*)();
3374// };
[51b73452]3375
3376variable_abstract_declarator:
[4d51835]3377 variable_abstract_ptr
3378 | variable_abstract_array attribute_list_opt
[1db21619]3379 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3380 | variable_abstract_function attribute_list_opt
[1db21619]3381 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3382 ;
[51b73452]3383
3384variable_abstract_ptr:
[dd51906]3385 ptrref_operator
[ce8c12f]3386 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3387 | ptrref_operator type_qualifier_list
[ce8c12f]3388 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3389 | ptrref_operator variable_abstract_declarator
[ce8c12f]3390 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3391 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3392 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[5e25953]3393 | '(' variable_abstract_ptr ')' attribute_list_opt // redundant parenthesis
[c0aa336]3394 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3395 ;
[51b73452]3396
3397variable_abstract_array:
[4d51835]3398 array_dimension
3399 | '(' variable_abstract_ptr ')' array_dimension
3400 { $$ = $2->addArray( $4 ); }
3401 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3402 { $$ = $2->addArray( $4 ); }
3403 | '(' variable_abstract_array ')' // redundant parenthesis
3404 { $$ = $2; }
3405 ;
[51b73452]3406
3407variable_abstract_function:
[c0a33d2]3408 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3409 { $$ = $2->addParamList( $6 ); }
[4d51835]3410 | '(' variable_abstract_function ')' // redundant parenthesis
3411 { $$ = $2; }
3412 ;
[b87a5ed]3413
[de62360d]3414// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3415// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3416
[c0aa336]3417cfa_identifier_parameter_declarator_tuple: // CFA
3418 cfa_identifier_parameter_declarator_no_tuple
3419 | cfa_abstract_tuple
3420 | type_qualifier_list cfa_abstract_tuple
[4d51835]3421 { $$ = $2->addQualifiers( $1 ); }
3422 ;
[b87a5ed]3423
[c0aa336]3424cfa_identifier_parameter_declarator_no_tuple: // CFA
3425 cfa_identifier_parameter_ptr
3426 | cfa_identifier_parameter_array
[4d51835]3427 ;
[b87a5ed]3428
[c0aa336]3429cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3430 // No SUE declaration in parameter list.
3431 ptrref_operator type_specifier_nobody
[ce8c12f]3432 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3433 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3434 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3435 | ptrref_operator cfa_abstract_function
[ce8c12f]3436 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3437 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3438 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3439 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3440 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3441 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3442 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3443 ;
[b87a5ed]3444
[c0aa336]3445cfa_identifier_parameter_array: // CFA
[de62360d]3446 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3447 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3448 '[' ']' type_specifier_nobody
[2871210]3449 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3450 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3451 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3452 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3453 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3454 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3455 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3456 | multi_array_dimension type_specifier_nobody
[4d51835]3457 { $$ = $2->addNewArray( $1 ); }
[9059213]3458
[c0aa336]3459 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3460 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3461 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3462 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3463 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3464 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3465 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3466 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3467 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3468 { $$ = $2->addNewArray( $1 ); }
3469 ;
[51b73452]3470
[c0aa336]3471cfa_array_parameter_1st_dimension:
[c0a33d2]3472 '[' push type_qualifier_list '*' pop ']' // remaining C99
3473 { $$ = DeclarationNode::newVarArray( $3 ); }
3474 | '[' push type_qualifier_list assignment_expression pop ']'
3475 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3476 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3477 // declaration_qualifier_list must be used because of shift/reduce conflict with
3478 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3479 // appear in this context.
[c0a33d2]3480 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3481 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3482 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3483 ;
[b87a5ed]3484
[de62360d]3485// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3486// identifier to which the type applies, e.g.:
[c11e31c]3487//
[b87a5ed]3488// [int] f( int ); // abstract variable parameter; no parameter name specified
3489// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3490//
3491// These rules need LR(3):
3492//
[c0aa336]3493// cfa_abstract_tuple identifier_or_type_name
[40de461]3494// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3495//
3496// since a function return type can be syntactically identical to a tuple type:
3497//
[b87a5ed]3498// [int, int] t;
3499// [int, int] f( int );
[c11e31c]3500//
[2871210]3501// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3502// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3503// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3504// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3505
[c0aa336]3506cfa_abstract_declarator_tuple: // CFA
3507 cfa_abstract_tuple
3508 | type_qualifier_list cfa_abstract_tuple
[4d51835]3509 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3510 | cfa_abstract_declarator_no_tuple
[4d51835]3511 ;
[b87a5ed]3512
[c0aa336]3513cfa_abstract_declarator_no_tuple: // CFA
3514 cfa_abstract_ptr
3515 | cfa_abstract_array
[4d51835]3516 ;
[b87a5ed]3517
[c0aa336]3518cfa_abstract_ptr: // CFA
[dd51906]3519 ptrref_operator type_specifier
[ce8c12f]3520 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3521 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3522 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3523 | ptrref_operator cfa_abstract_function
[ce8c12f]3524 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3525 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3526 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3527 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3528 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3529 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3530 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3531 ;
[b87a5ed]3532
[c0aa336]3533cfa_abstract_array: // CFA
[de62360d]3534 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3535 // empty (void) function return type.
[2871210]3536 '[' ']' type_specifier
[2298f728]3537 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3538 | '[' ']' multi_array_dimension type_specifier
[2298f728]3539 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3540 | multi_array_dimension type_specifier
3541 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3542 | '[' ']' cfa_abstract_ptr
[2298f728]3543 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3544 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3545 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3546 | multi_array_dimension cfa_abstract_ptr
[4d51835]3547 { $$ = $2->addNewArray( $1 ); }
3548 ;
[b87a5ed]3549
[c0aa336]3550cfa_abstract_tuple: // CFA
[c0a33d2]3551 '[' push cfa_abstract_parameter_list pop ']'
3552 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3553 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3554 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3555 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3556 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3557 ;
[b87a5ed]3558
[c0aa336]3559cfa_abstract_function: // CFA
[40de461]3560// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3561// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3562 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3563 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3564 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3565 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3566 ;
[b87a5ed]3567
[de62360d]3568// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3569// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3570//
[de62360d]3571// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3572// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3573//
3574// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3575// prototype-format parameter type declarators) is an obsolescent feature."
3576//
[de62360d]3577// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3578// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3579
[c11e31c]3580//************************* MISCELLANEOUS ********************************
[51b73452]3581
[b87a5ed]3582comma_opt: // redundant comma
[4d51835]3583 // empty
3584 | ','
3585 ;
[51b73452]3586
[5a51798]3587default_initializer_opt:
[4d51835]3588 // empty
[58dd019]3589 { $$ = nullptr; }
[4d51835]3590 | '=' assignment_expression
3591 { $$ = $2; }
3592 ;
[51b73452]3593
3594%%
[a1c9ddd]3595
[c11e31c]3596// ----end of grammar----
[51b73452]3597
[c11e31c]3598// Local Variables: //
[b87a5ed]3599// mode: c++ //
[de62360d]3600// tab-width: 4 //
[c11e31c]3601// compile-command: "make install" //
3602// End: //
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