source: src/Parser/parser.yy@ 8e4aa05

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 8e4aa05 was 9fb1367, checked in by Peter A. Buhr <pabuhr@…>, 5 years ago

make keywords catch, catchResume, finally quasi-keywords, add quasi-keyword recover as synonym for catch and fixup for catchResume

  • Property mode set to 100644
File size: 139.8 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
[9fb1367]12// Last Modified On : Wed Feb 17 09:03:07 2021
13// Update Count : 4722
[974906e2]14//
[c11e31c]15
[de62360d]16// This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C
17// grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts have been
18// copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar.
19// In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax
20// that must be subsequently rejected by semantic checks. Nevertheless, there are still several semantic checks
21// required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions.
[c11e31c]22
[de62360d]23// Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with
24// the grammar.
[c11e31c]25
26// The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for:
27//
28// 1. designation with '=' (use ':' instead)
29//
[de62360d]30// Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar also has
31// two levels of extensions. The first extensions cover most of the GCC C extensions, except for:
[c11e31c]32//
[e7aed49]33// 1. designation with and without '=' (use ':' instead)
[c0aa336]34// 2. attributes not allowed in parenthesis of declarator
[c11e31c]35//
[de62360d]36// All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall
37// (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the
38// syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable
39// parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation"
40// grammar rule.
[51b73452]41
42%{
[ec3f9c8]43#define YYDEBUG_LEXER_TEXT( yylval ) // lexer loads this up each time
[b87a5ed]44#define YYDEBUG 1 // get the pretty debugging code to compile
[201aeb9]45#define YYERROR_VERBOSE // more information in syntax errors
[51b73452]46
47#undef __GNUC_MINOR__
48
49#include <cstdio>
50#include <stack>
[9ed4f94]51using namespace std;
52
[312029a]53#include "SynTree/Declaration.h"
[51b73452]54#include "ParseNode.h"
[984dce6]55#include "TypedefTable.h"
[1db21619]56#include "TypeData.h"
[07de76b]57#include "SynTree/LinkageSpec.h"
[9ed4f94]58#include "Common/SemanticError.h" // error_str
[513e165]59#include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
[51b73452]60
[cbaee0d]61extern DeclarationNode * parseTree;
[8b7ee09]62extern LinkageSpec::Spec linkage;
[0da3e2c]63extern TypedefTable typedefTable;
64
[408ab79]65stack<LinkageSpec::Spec> linkageStack;
[7bf7fb9]66
[15697ff]67bool appendStr( string & to, string & from ) {
68 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]69 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]70 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
71 // easier to let the C compiler handle this case.
72 //
73 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
74 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
75 // i.e., u"a" U"b" L"c" is disallowed.
76
77 if ( from[0] != '"' ) { // encoding ?
78 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]79 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]80 yyerror( "non-matching string encodings for string-literal concatenation" );
81 return false; // parse error, must call YYERROR in action
[ea0c5e3]82 } else if ( from[1] == '8' ) {
83 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]84 } // if
85 } else {
[ea0c5e3]86 if ( from[1] == '8' ) { // move encoding to start
87 to = "u8" + to;
88 from.erase( 0, 1 ); // remove 2nd encoding
89 } else {
90 to = from[0] + to;
91 } // if
[15697ff]92 } // if
93 from.erase( 0, 1 ); // remove 2nd encoding
94 } // if
95 to += " " + from; // concatenated into single string
96 return true;
[7bf7fb9]97} // appendStr
[c0aa336]98
99DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) {
100 // distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__.
101 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier );
[6d01d89]102 for ( cur = dynamic_cast<DeclarationNode *>( cur->get_next() ); cur != nullptr; cur = dynamic_cast<DeclarationNode *>( cur->get_next() ) ) {
[c0aa336]103 cl->cloneBaseType( cur );
104 } // for
105 declList->addType( cl );
106 return declList;
107} // distAttr
108
109void distExt( DeclarationNode * declaration ) {
110 // distribute EXTENSION across all declarations
111 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
112 iter->set_extension( true );
113 } // for
114} // distExt
[fdca7c6]115
[e07caa2]116void distInl( DeclarationNode * declaration ) {
117 // distribute EXTENSION across all declarations
118 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
119 iter->set_inLine( true );
120 } // for
121} // distInl
122
[4c3ee8d]123void distQual( DeclarationNode * declaration, DeclarationNode * qualifiers ) {
[284da8c]124 // distribute qualifiers across all non-variable declarations in a distribution statemement
[4c3ee8d]125 for ( DeclarationNode * iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[284da8c]126 // SKULLDUGGERY: Distributions are parsed inside out, so qualifiers are added to declarations inside out. Since
127 // addQualifiers appends to the back of the list, the forall clauses are in the wrong order (right to left). To
128 // get the qualifiers in the correct order and still use addQualifiers (otherwise, 90% of addQualifiers has to
129 // be copied to add to front), the appropriate forall pointers are interchanged before calling addQualifiers.
130 DeclarationNode * clone = qualifiers->clone();
131 if ( qualifiers->type ) { // forall clause ? (handles SC)
132 if ( iter->type->kind == TypeData::Aggregate ) { // struct/union ?
133 swap( clone->type->forall, iter->type->aggregate.params );
134 iter->addQualifiers( clone );
135 } else if ( iter->type->kind == TypeData::AggregateInst && iter->type->aggInst.aggregate->aggregate.body ) { // struct/union ?
136 // Create temporary node to hold aggregate, call addQualifiers as above, then put nodes back together.
137 DeclarationNode newnode;
138 swap( newnode.type, iter->type->aggInst.aggregate );
139 swap( clone->type->forall, newnode.type->aggregate.params );
140 newnode.addQualifiers( clone );
141 swap( newnode.type, iter->type->aggInst.aggregate );
142 } else if ( iter->type->kind == TypeData::Function ) { // routines ?
143 swap( clone->type->forall, iter->type->forall );
144 iter->addQualifiers( clone );
145 } // if
146 } else { // just SC qualifiers
147 iter->addQualifiers( clone );
148 } // if
[4c3ee8d]149 } // for
[284da8c]150 delete qualifiers;
151} // distQual
[4c3ee8d]152
[c38ae92]153// There is an ambiguity for inline generic-routine return-types and generic routines.
154// forall( otype T ) struct S { int i; } bar( T ) {}
155// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
156// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]157// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
158// forall( otype T ) struct S { int T; };
159// forall( otype W ) bar( W ) {}
[c38ae92]160
161void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]162 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]163 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
164 declSpec->type->aggregate.params = nullptr;
165 } // if
166} // rebindForall
167
[60a8062]168string * build_postfix_name( string * name ) {
169 *name = string("__postfix_func_") + *name;
170 return name;
[dc7db63]171} // build_postfix_name
172
[f7e4db27]173DeclarationNode * fieldDecl( DeclarationNode * typeSpec, DeclarationNode * fieldList ) {
174 if ( ! fieldList ) { // field declarator ?
[553772b]175 if ( ! ( typeSpec->type && (typeSpec->type->kind == TypeData::Aggregate || typeSpec->type->kind == TypeData::Enum) ) ) {
[f7e4db27]176 stringstream ss;
177 typeSpec->type->print( ss );
178 SemanticWarning( yylloc, Warning::SuperfluousDecl, ss.str().c_str() );
179 return nullptr;
180 } // if
181 fieldList = DeclarationNode::newName( nullptr );
182 } // if
183 return distAttr( typeSpec, fieldList ); // mark all fields in list
184} // fieldDecl
185
[cc22003]186ForCtrl * forCtrl( ExpressionNode * type, string * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]187 ConstantExpr * constant = dynamic_cast<ConstantExpr *>(type->expr.get());
[0982a05]188 if ( constant && (constant->get_constant()->get_value() == "0" || constant->get_constant()->get_value() == "1") ) {
[ec3f9c8]189 type = new ExpressionNode( new CastExpr( maybeMoveBuild<Expression>(type), new BasicType( Type::Qualifiers(), BasicType::SignedInt ) ) );
[0982a05]190 } // if
[f271bdd]191 return new ForCtrl(
[5753b33]192 distAttr( DeclarationNode::newTypeof( type, true ), DeclarationNode::newName( index )->addInitializer( new InitializerNode( start ) ) ),
[2d2df9f]193 // NULL comp/inc => leave blank
194 comp ? new ExpressionNode( build_binary_val( compop, new ExpressionNode( build_varref( new string( *index ) ) ), comp ) ) : 0,
195 inc ? new ExpressionNode( build_binary_val( compop == OperKinds::LThan || compop == OperKinds::LEThan ? // choose += or -= for upto/downto
196 OperKinds::PlusAssn : OperKinds::MinusAssn, new ExpressionNode( build_varref( new string( *index ) ) ), inc ) ) : 0 );
[f271bdd]197} // forCtrl
198
[f1aeede]199ForCtrl * forCtrl( ExpressionNode * type, ExpressionNode * index, ExpressionNode * start, enum OperKinds compop, ExpressionNode * comp, ExpressionNode * inc ) {
[1dda8de]200 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(index->expr.get()) ) {
[f1aeede]201 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
[1dda8de]202 } else if ( CommaExpr * commaExpr = dynamic_cast<CommaExpr *>(index->expr.get()) ) {
[6d01d89]203 if ( NameExpr * identifier = dynamic_cast<NameExpr *>(commaExpr->arg1 ) ) {
204 return forCtrl( type, new string( identifier->name ), start, compop, comp, inc );
205 } else {
[3ca7ef3]206 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[6d01d89]207 } // if
[f1aeede]208 } else {
[3ca7ef3]209 SemanticError( yylloc, "Expression disallowed. Only loop-index name allowed." ); return nullptr;
[f1aeede]210 } // if
[f271bdd]211} // forCtrl
212
[fc20514]213bool forall = false, yyy = false; // aggregate have one or more forall qualifiers ?
[d48e529]214
[201aeb9]215// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
216#define YYLLOC_DEFAULT(Cur, Rhs, N) \
217if ( N ) { \
218 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
219 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
220 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
221 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
222 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
223} else { \
224 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
225 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
226 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
227}
[51b73452]228%}
229
[15697ff]230%define parse.error verbose
231
[201aeb9]232// Types declaration for productions
[0982a05]233%union {
[a67b60e]234 Token tok;
235 ParseNode * pn;
236 ExpressionNode * en;
237 DeclarationNode * decl;
[312029a]238 AggregateDecl::Aggregate aggKey;
[07de76b]239 TypeDecl::Kind tclass;
[a67b60e]240 StatementNode * sn;
[135b431]241 WaitForStmt * wfs;
[e612146c]242 Expression * constant;
[f271bdd]243 IfCtrl * ifctl;
244 ForCtrl * fctl;
[cc22003]245 enum OperKinds compop;
[a67b60e]246 LabelNode * label;
247 InitializerNode * in;
248 OperKinds op;
249 std::string * str;
250 bool flag;
[307a732]251 CatchStmt::Kind catch_kind;
[d807ca28]252 GenericExpr * genexpr;
[a67b60e]253}
254
[c11e31c]255//************************* TERMINAL TOKENS ********************************
[51b73452]256
[c11e31c]257// keywords
[51b73452]258%token TYPEDEF
[a7c90d4]259%token EXTERN STATIC AUTO REGISTER
260%token THREADLOCAL // C11
261%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
262%token NORETURN // C11
[51b73452]263%token CONST VOLATILE
[b87a5ed]264%token RESTRICT // C99
[a7c90d4]265%token ATOMIC // C11
[1528a2c]266%token FORALL MUTEX VIRTUAL COERCE // CFA
[72457b6]267%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]268%token BOOL COMPLEX IMAGINARY // C99
[f1da02c]269%token INT128 UINT128 uuFLOAT80 uuFLOAT128 // GCC
[e15853c]270%token uFLOAT16 uFLOAT32 uFLOAT32X uFLOAT64 uFLOAT64X uFLOAT128 // GCC
[72457b6]271%token ZERO_T ONE_T // CFA
272%token VALIST // GCC
[f673c13c]273%token AUTO_TYPE // GCC
[ee27df2]274%token TYPEOF BASETYPEOF LABEL // GCC
[51b73452]275%token ENUM STRUCT UNION
[c27fb59]276%token EXCEPTION // CFA
[553772b]277%token GENERATOR COROUTINE MONITOR THREAD // CFA
[a7c90d4]278%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[5721a6d]279%token SIZEOF OFFSETOF
[25744d2]280// %token RESUME // CFA
281%token SUSPEND // CFA
[b87a5ed]282%token ATTRIBUTE EXTENSION // GCC
[51b73452]283%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[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
[9706554]323%type<op> ptrref_operator unary_operator assignment_operator
[b87a5ed]324%type<en> primary_expression postfix_expression unary_expression
[4a063df]325%type<en> cast_expression_list cast_expression exponential_expression multiplicative_expression additive_expression
[994d080]326%type<en> shift_expression relational_expression equality_expression
327%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
328%type<en> logical_AND_expression logical_OR_expression
329%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]330%type<en> comma_expression comma_expression_opt
[5a51798]331%type<en> argument_expression_list_opt argument_expression default_initializer_opt
[936e9f4]332%type<ifctl> if_control_expression
[6d01d89]333%type<fctl> for_control_expression for_control_expression_list
[cc22003]334%type<compop> inclexcl
[51b73452]335%type<en> subrange
[c0aa336]336%type<decl> asm_name_opt
[67d4e37]337%type<en> asm_operands_opt asm_operands_list asm_operand
[7f5566b]338%type<label> label_list
[d1625f8]339%type<en> asm_clobbers_list_opt
[7f5566b]340%type<flag> asm_volatile_opt
[cbce272]341%type<en> handler_predicate_opt
[67d4e37]342%type<genexpr> generic_association generic_assoc_list
[51b73452]343
[c11e31c]344// statements
[9bd6105]345%type<sn> statement labeled_statement compound_statement
346%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]347%type<sn> selection_statement if_statement
[6a276a0]348%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]349%type<en> case_value
350%type<sn> case_clause case_value_list case_label case_label_list
[8b47e50]351%type<sn> iteration_statement jump_statement
[9bd6105]352%type<sn> expression_statement asm_statement
[c453ac4]353%type<sn> with_statement
354%type<en> with_clause_opt
[51d6d6a]355%type<sn> exception_statement handler_clause finally_clause
356%type<catch_kind> handler_key
[b6b3c42]357%type<sn> mutex_statement
[9bd6105]358%type<en> when_clause when_clause_opt waitfor timeout
[135b431]359%type<sn> waitfor_statement
[51d6d6a]360%type<wfs> waitfor_clause
[51b73452]361
[c11e31c]362// declarations
[c0aa336]363%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
364%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
365%type<decl> abstract_parameter_declaration
[51b73452]366
[e307e12]367%type<aggKey> aggregate_key aggregate_data aggregate_control
[d0ffed1]368%type<decl> aggregate_type aggregate_type_nobody
[51b73452]369
[9997fee]370%type<decl> assertion assertion_list assertion_list_opt
[51b73452]371
[25744d2]372%type<en> bit_subrange_size_opt bit_subrange_size
[51b73452]373
[84d58c5]374%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[51b73452]375
[4040425]376%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]377
378%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]379%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]380
[d0ffed1]381%type<decl> elaborated_type elaborated_type_nobody
[51b73452]382
[d0ffed1]383%type<decl> enumerator_list enum_type enum_type_nobody
[51b73452]384%type<en> enumerator_value_opt
385
[3d56d15b]386%type<decl> external_definition external_definition_list external_definition_list_opt
387
388%type<decl> exception_declaration
[51b73452]389
[e07caa2]390%type<decl> field_declaration_list_opt field_declaration field_declaring_list_opt field_declarator field_abstract_list_opt field_abstract
[679e644]391%type<en> field field_name_list field_name fraction_constants_opt
[51b73452]392
[4d51835]393%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]394
[d3bc0ad]395%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
396%type<decl> identifier_list
[51b73452]397
[c0aa336]398%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
399%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
400%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]401
[c0aa336]402%type<decl> cfa_array_parameter_1st_dimension
[51b73452]403
[679e644]404%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list cfa_field_abstract_list
[c0aa336]405%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]406
[c0aa336]407%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
408%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]409
[40de461]410%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]411
[c0aa336]412%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]413
[b9be000b]414%type<decl> c_declaration static_assert
[c0aa336]415%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]416%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]417
[2a8427c6]418%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]419
[2871210]420%type<decl> paren_identifier paren_type
[51b73452]421
[0da3e2c]422%type<decl> storage_class storage_class_list
[51b73452]423
[d0ffed1]424%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]425
[5a51798]426%type<tclass> type_class new_type_class
[51b73452]427%type<decl> type_declarator type_declarator_name type_declaring_list
428
[84d58c5]429%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
430%type<decl> typedef typedef_declaration typedef_expression
[c0aa336]431
432%type<decl> variable_type_redeclarator type_ptr type_array type_function
433
434%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]435
[84d58c5]436%type<decl> type type_no_function
437%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]438
[284da8c]439%type<en> type_parameters_opt type_list
[51b73452]440
[a16a7ec]441%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[408ab79]442%type<decl> type_specifier type_specifier_nobody enum_specifier_nobody
[51b73452]443
[c0aa336]444%type<decl> variable_declarator variable_ptr variable_array variable_function
445%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]446
[408ab79]447%type<decl> attribute_list_opt attribute_list attribute_opt attribute attribute_name_list attribute_name
[1db21619]448
[c11e31c]449// initializers
[7fdb94e1]450%type<in> initializer initializer_list_opt initializer_opt
[51b73452]451
[c11e31c]452// designators
[51b73452]453%type<en> designator designator_list designation
454
455
[65d6de4]456// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
457// .---------. matches IF '(' comma_expression ')' statement . (reduce)
458// if ( C ) S1 else S2
459// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]460// Similar issues exit with the waitfor statement.
[51b73452]461
[1efa1e1]462// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
463// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[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 { $$ = nullptr; }
[4d51835]948 | assignment_expression
949 ;
[b87a5ed]950
[9706554]951assignment_operator:
[d9e2280]952 '=' { $$ = OperKinds::Assign; }
[a839867]953 | ATassign { $$ = OperKinds::AtAssn; }
[e5f2a67]954 | EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]955 | MULTassign { $$ = OperKinds::MulAssn; }
956 | DIVassign { $$ = OperKinds::DivAssn; }
957 | MODassign { $$ = OperKinds::ModAssn; }
958 | PLUSassign { $$ = OperKinds::PlusAssn; }
959 | MINUSassign { $$ = OperKinds::MinusAssn; }
960 | LSassign { $$ = OperKinds::LSAssn; }
961 | RSassign { $$ = OperKinds::RSAssn; }
962 | ANDassign { $$ = OperKinds::AndAssn; }
963 | ERassign { $$ = OperKinds::ERAssn; }
964 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]965 ;
[9706554]966
[b87a5ed]967tuple: // CFA, tuple
[de62360d]968 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]969 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]970// '[' ']'
971// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]972// | '[' push assignment_expression pop ']'
[1b29996]973// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]974 '[' ',' tuple_expression_list ']'
975 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
976 | '[' push assignment_expression pop ',' tuple_expression_list ']'
[4a063df]977 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)($3->set_last( $6 ) ) )); }
[4d51835]978 ;
[51b73452]979
980tuple_expression_list:
[0a6d8204]981 assignment_expression
982 | '@' // CFA
983 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
984 | tuple_expression_list ',' assignment_expression
[4a063df]985 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[0a6d8204]986 | tuple_expression_list ',' '@'
987 { SemanticError( yylloc, "Eliding tuple element with '@' is currently unimplemented." ); $$ = nullptr; }
[4d51835]988 ;
[51b73452]989
990comma_expression:
[4d51835]991 assignment_expression
[9706554]992 | comma_expression ',' assignment_expression
[408ab79]993 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]994 ;
[51b73452]995
996comma_expression_opt:
[4d51835]997 // empty
[58dd019]998 { $$ = nullptr; }
[4d51835]999 | comma_expression
1000 ;
[51b73452]1001
[c11e31c]1002//*************************** STATEMENTS *******************************
[51b73452]1003
1004statement:
[4d51835]1005 labeled_statement
1006 | compound_statement
[c0a33d2]1007 | expression_statement
[4d51835]1008 | selection_statement
1009 | iteration_statement
1010 | jump_statement
[8b47e50]1011 | with_statement
[b6b3c42]1012 | mutex_statement
[5b2edbc]1013 | waitfor_statement
[4d51835]1014 | exception_statement
[2a8427c6]1015 | enable_disable_statement
[fae90d5f]1016 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]1017 | asm_statement
[61fc4f6]1018 | DIRECTIVE
[6d539f83]1019 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]1020 ;
[51b73452]1021
1022labeled_statement:
[033ff37]1023 // labels cannot be identifiers 0 or 1
[44a81853]1024 identifier_or_type_name ':' attribute_list_opt statement
[6d01d89]1025 { $$ = $4->add_label( $1, $3 ); }
[4d51835]1026 ;
[51b73452]1027
1028compound_statement:
[4d51835]1029 '{' '}'
[e82aa9df]1030 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]1031 | '{' push
[51b1202]1032 local_label_declaration_opt // GCC, local labels
[9bd6105]1033 statement_decl_list // C99, intermix declarations and statements
[c0aa336]1034 pop '}'
[35718a9]1035 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]1036 ;
[b87a5ed]1037
[9bd6105]1038statement_decl_list: // C99
1039 statement_decl
[35718a9]1040 | statement_decl_list statement_decl
[6d01d89]1041 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1042 ;
[51b73452]1043
[9bd6105]1044statement_decl:
[4d51835]1045 declaration // CFA, new & old style declarations
[e82aa9df]1046 { $$ = new StatementNode( $1 ); }
[4d51835]1047 | EXTENSION declaration // GCC
[6d01d89]1048 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[4d51835]1049 | function_definition
[e82aa9df]1050 { $$ = new StatementNode( $1 ); }
[c0aa336]1051 | EXTENSION function_definition // GCC
[6d01d89]1052 { distExt( $2 ); $$ = new StatementNode( $2 ); }
[35718a9]1053 | statement
[4d51835]1054 ;
[51b73452]1055
[9bd6105]1056statement_list_nodecl:
[4d51835]1057 statement
[9bd6105]1058 | statement_list_nodecl statement
[6d01d89]1059 { assert( $1 ); $1->set_last( $2 ); $$ = $1; }
[4d51835]1060 ;
[51b73452]1061
1062expression_statement:
[4d51835]1063 comma_expression_opt ';'
[e82aa9df]1064 { $$ = new StatementNode( build_expr( $1 ) ); }
[4d51835]1065 ;
[51b73452]1066
1067selection_statement:
[3d26610]1068 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
1069 // the inherent S/R conflict with THEN/ELSE.
1070 push if_statement pop
1071 { $$ = $2; }
[4cc585b]1072 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]1073 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]1074 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1075 {
[6a276a0]1076 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]1077 // The semantics of the declaration list is changed to include associated initialization, which is performed
1078 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
1079 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]1080 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
1081 // statement.
[a7741435]1082 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1083 }
[4d51835]1084 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]1085 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]1086 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]1087 {
[6a276a0]1088 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]1089 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]1090 }
[4d51835]1091 ;
[b87a5ed]1092
[3d26610]1093if_statement:
1094 IF '(' if_control_expression ')' statement %prec THEN
1095 // explicitly deal with the shift/reduce conflict on if/else
[a025ea8]1096 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), nullptr ) ); }
[3d26610]1097 | IF '(' if_control_expression ')' statement ELSE statement
[a025ea8]1098 { $$ = new StatementNode( build_if( $3, maybe_build_compound( $5 ), maybe_build_compound( $7 ) ) ); }
[3d26610]1099 ;
1100
[936e9f4]1101if_control_expression:
[35718a9]1102 comma_expression
[f271bdd]1103 { $$ = new IfCtrl( nullptr, $1 ); }
[35718a9]1104 | c_declaration // no semi-colon
[f271bdd]1105 { $$ = new IfCtrl( $1, nullptr ); }
[35718a9]1106 | cfa_declaration // no semi-colon
[f271bdd]1107 { $$ = new IfCtrl( $1, nullptr ); }
[6d49ea3]1108 | declaration comma_expression // semi-colon separated
[f271bdd]1109 { $$ = new IfCtrl( $1, $2 ); }
[936e9f4]1110 ;
1111
[de62360d]1112// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1113// clause allows a list of values and subranges.
[b87a5ed]1114
1115case_value: // CFA
[4d51835]1116 constant_expression { $$ = $1; }
1117 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[408ab79]1118 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]1119 | subrange // CFA, subrange
1120 ;
[b87a5ed]1121
1122case_value_list: // CFA
[e82aa9df]1123 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1124 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1125 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1126 ;
[b87a5ed]1127
1128case_label: // CFA
[8688ce1]1129 CASE case_value_list ':' { $$ = $2; }
[e82aa9df]1130 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1131 // A semantic check is required to ensure only one default clause per switch/choose statement.
1132 ;
[b87a5ed]1133
[6a276a0]1134//label_list_opt:
1135// // empty
1136// | identifier_or_type_name ':'
1137// | label_list_opt identifier_or_type_name ':'
1138// ;
1139
[b87a5ed]1140case_label_list: // CFA
[4d51835]1141 case_label
[1d4580a]1142 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1143 ;
[b87a5ed]1144
1145case_clause: // CFA
[a025ea8]1146 case_label_list statement { $$ = $1->append_last_case( maybe_build_compound( $2 ) ); }
[4d51835]1147 ;
[b87a5ed]1148
1149switch_clause_list_opt: // CFA
[4d51835]1150 // empty
[58dd019]1151 { $$ = nullptr; }
[4d51835]1152 | switch_clause_list
1153 ;
[b87a5ed]1154
1155switch_clause_list: // CFA
[9bd6105]1156 case_label_list statement_list_nodecl
[e82aa9df]1157 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1158 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1159 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1160 ;
[b87a5ed]1161
[51b73452]1162iteration_statement:
[401e61f]1163 WHILE '(' push if_control_expression ')' statement pop
[a025ea8]1164 { $$ = new StatementNode( build_while( $4, maybe_build_compound( $6 ) ) ); }
[f271bdd]1165 | WHILE '(' ')' statement // CFA => while ( 1 )
[a025ea8]1166 { $$ = new StatementNode( build_while( new IfCtrl( nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ), maybe_build_compound( $4 ) ) ); }
[4d51835]1167 | DO statement WHILE '(' comma_expression ')' ';'
[a025ea8]1168 { $$ = new StatementNode( build_do_while( $5, maybe_build_compound( $2 ) ) ); }
[f271bdd]1169 | DO statement WHILE '(' ')' ';' // CFA => do while( 1 )
[a025ea8]1170 { $$ = new StatementNode( build_do_while( new ExpressionNode( build_constantInteger( *new string( "1" ) ) ), maybe_build_compound( $2 ) ) ); }
[6d01d89]1171 | FOR '(' push for_control_expression_list ')' statement pop
[a025ea8]1172 { $$ = new StatementNode( build_for( $4, maybe_build_compound( $6 ) ) ); }
[f1aeede]1173 | FOR '(' ')' statement // CFA => for ( ;; )
[a025ea8]1174 { $$ = new StatementNode( build_for( new ForCtrl( (ExpressionNode * )nullptr, (ExpressionNode * )nullptr, (ExpressionNode * )nullptr ), maybe_build_compound( $4 ) ) ); }
[4d51835]1175 ;
[51b73452]1176
[6d01d89]1177for_control_expression_list:
1178 for_control_expression
1179 | for_control_expression_list ':' for_control_expression
[67d4e37]1180 // ForCtrl + ForCtrl:
1181 // init + init => multiple declaration statements that are hoisted
1182 // condition + condition => (expression) && (expression)
1183 // change + change => (expression), (expression)
1184 {
1185 $1->init->set_last( $3->init );
1186 if ( $1->condition ) {
1187 if ( $3->condition ) {
1188 $1->condition->expr.reset( new LogicalExpr( $1->condition->expr.release(), $3->condition->expr.release(), true ) );
1189 } // if
1190 } else $1->condition = $3->condition;
1191 if ( $1->change ) {
1192 if ( $3->change ) {
1193 $1->change->expr.reset( new CommaExpr( $1->change->expr.release(), $3->change->expr.release() ) );
1194 } // if
1195 } else $1->change = $3->change;
1196 $$ = $1;
1197 }
[6d01d89]1198 ;
1199
[51b73452]1200for_control_expression:
[6d01d89]1201 ';' comma_expression_opt ';' comma_expression_opt
1202 { $$ = new ForCtrl( (ExpressionNode * )nullptr, $2, $4 ); }
1203 | comma_expression ';' comma_expression_opt ';' comma_expression_opt
1204 { $$ = new ForCtrl( $1, $3, $5 ); }
1205 | declaration comma_expression_opt ';' comma_expression_opt // C99, declaration has ';'
1206 { $$ = new ForCtrl( $1, $2, $4 ); }
[67d4e37]1207
[6d01d89]1208 | comma_expression // CFA
[f1aeede]1209 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1210 OperKinds::LThan, $1->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1211 | '=' comma_expression // CFA
[9853d9b0]1212 { $$ = forCtrl( $2, new string( DeclarationNode::anonymous.newName() ), new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1213 OperKinds::LEThan, $2->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1214 | comma_expression inclexcl comma_expression // CFA
[ee27df2]1215 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1216 | comma_expression inclexcl comma_expression '~' comma_expression // CFA
[cc22003]1217 { $$ = forCtrl( $1, new string( DeclarationNode::anonymous.newName() ), $1->clone(), $2, $3, $5 ); }
[cbbd8fd7]1218 | comma_expression ';' // CFA
1219 { $$ = forCtrl( new ExpressionNode( build_constantInteger( *new string( "0u" ) ) ), $1, nullptr, OperKinds::LThan, nullptr, nullptr ); }
[f1aeede]1220 | comma_expression ';' comma_expression // CFA
1221 { $$ = forCtrl( $3, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1222 OperKinds::LThan, $3->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[cbbd8fd7]1223 | comma_expression ';' '=' comma_expression // CFA
[332bd33]1224 { $$ = forCtrl( $4, $1, new ExpressionNode( build_constantInteger( *new string( "0" ) ) ),
1225 OperKinds::LEThan, $4->clone(), new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1226 | comma_expression ';' comma_expression inclexcl comma_expression // CFA
[f1aeede]1227 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[6d01d89]1228 | comma_expression ';' comma_expression inclexcl comma_expression '~' comma_expression // CFA
[f1aeede]1229 { $$ = forCtrl( $3, $1, $3->clone(), $4, $5, $7 ); }
[67d4e37]1230
1231 // There is a S/R conflicit if ~ and -~ are factored out.
1232 | comma_expression ';' comma_expression '~' '@' // CFA
1233 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
1234 | comma_expression ';' comma_expression ErangeDown '@' // CFA
1235 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, new ExpressionNode( build_constantInteger( *new string( "1" ) ) ) ); }
[2d2df9f]1236 | comma_expression ';' comma_expression '~' '@' '~' comma_expression // CFA
1237 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, $7 ); }
[1b54b54]1238 | comma_expression ';' comma_expression ErangeDown '@' '~' comma_expression // CFA
1239 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::GThan, nullptr, $7 ); }
[2d2df9f]1240 | comma_expression ';' comma_expression '~' '@' '~' '@' // CFA
1241 { $$ = forCtrl( $3, $1, $3->clone(), OperKinds::LThan, nullptr, nullptr ); }
[d1625f8]1242 ;
[51b73452]1243
[cc22003]1244inclexcl:
1245 '~'
1246 { $$ = OperKinds::LThan; }
[d69f4bb4]1247 | ErangeUpEq
[cc22003]1248 { $$ = OperKinds::LEThan; }
[d69f4bb4]1249 | ErangeDown
1250 { $$ = OperKinds::GThan; }
1251 | ErangeDownEq
1252 { $$ = OperKinds::GEThan; }
[cc22003]1253 ;
1254
[51b73452]1255jump_statement:
[44a81853]1256 GOTO identifier_or_type_name ';'
[ab57786]1257 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1258 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1259 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1260 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1261 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1262 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
[ec3f9c8]1263 | fall_through_name ';' // CFA
[6a276a0]1264 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
[ec3f9c8]1265 | fall_through_name identifier_or_type_name ';' // CFA
[6a276a0]1266 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1267 | fall_through_name DEFAULT ';' // CFA
1268 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1269 | CONTINUE ';'
[de62360d]1270 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1271 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1272 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1273 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1274 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1275 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1276 | BREAK ';'
[de62360d]1277 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1278 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1279 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1280 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1281 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1282 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1283 | RETURN comma_expression_opt ';'
[e82aa9df]1284 { $$ = new StatementNode( build_return( $2 ) ); }
[c786e1d]1285 | RETURN '{' initializer_list_opt comma_opt '}' ';'
[fae90d5f]1286 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[37cdd97]1287 | SUSPEND ';'
[427854b]1288 { $$ = new StatementNode( build_suspend( nullptr ) ); }
[9306559f]1289 | SUSPEND compound_statement
[427854b]1290 { $$ = new StatementNode( build_suspend( $2 ) ); }
[37cdd97]1291 | SUSPEND COROUTINE ';'
[427854b]1292 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Coroutine ) ); }
[37cdd97]1293 | SUSPEND COROUTINE compound_statement
[427854b]1294 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Coroutine ) ); }
[37cdd97]1295 | SUSPEND GENERATOR ';'
[427854b]1296 { $$ = new StatementNode( build_suspend( nullptr, SuspendStmt::Generator ) ); }
[37cdd97]1297 | SUSPEND GENERATOR compound_statement
[427854b]1298 { $$ = new StatementNode( build_suspend( $3, SuspendStmt::Generator ) ); }
[8cc5cb0]1299 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1300 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1301 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1302 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1303 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1304 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1305 ;
[51b73452]1306
[6a276a0]1307fall_through_name: // CFA
1308 FALLTHRU
1309 | FALLTHROUGH
1310 ;
1311
[8b47e50]1312with_statement:
[5b2edbc]1313 WITH '(' tuple_expression_list ')' statement
[a378ca7]1314 {
1315 $$ = new StatementNode( build_with( $3, $5 ) );
1316 }
[5b2edbc]1317 ;
1318
[b6b3c42]1319// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1320mutex_statement:
[cbbd8fd7]1321 MUTEX '(' argument_expression_list_opt ')' statement
[fae90d5f]1322 { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; }
[b6b3c42]1323 ;
1324
[51d6d6a]1325when_clause:
[6a276a0]1326 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1327 ;
1328
[5b2edbc]1329when_clause_opt:
1330 // empty
[135b431]1331 { $$ = nullptr; }
[51d6d6a]1332 | when_clause
[5b2edbc]1333 ;
1334
1335waitfor:
[713926ca]1336 WAITFOR '(' cast_expression ')'
1337 { $$ = $3; }
[cbbd8fd7]1338// | WAITFOR '(' cast_expression ',' argument_expression_list_opt ')'
[4a063df]1339// { $$ = (ExpressionNode *)$3->set_last( $5 ); }
[cbbd8fd7]1340 | WAITFOR '(' cast_expression_list ':' argument_expression_list_opt ')'
[4a063df]1341 { $$ = (ExpressionNode *)($3->set_last( $5 )); }
1342 ;
1343
1344cast_expression_list:
1345 cast_expression
1346 | cast_expression_list ',' cast_expression
[a491a3c]1347 // { $$ = (ExpressionNode *)($1->set_last( $3 )); }
1348 { SemanticError( yylloc, "List of mutex member is currently unimplemented." ); $$ = nullptr; }
[5b2edbc]1349 ;
1350
1351timeout:
[6a276a0]1352 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1353 ;
1354
1355waitfor_clause:
[51d6d6a]1356 when_clause_opt waitfor statement %prec THEN
[a025ea8]1357 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1358 | when_clause_opt waitfor statement WOR waitfor_clause
[a025ea8]1359 { $$ = build_waitfor( $2, maybe_build_compound( $3 ), $1, $5 ); }
[51d6d6a]1360 | when_clause_opt timeout statement %prec THEN
[a025ea8]1361 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1 ); }
[5b2edbc]1362 | when_clause_opt ELSE statement
[a025ea8]1363 { $$ = build_waitfor_timeout( nullptr, maybe_build_compound( $3 ), $1 ); }
[51d6d6a]1364 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
[713926ca]1365 | when_clause_opt timeout statement WOR ELSE statement
1366 { SemanticError( yylloc, "else clause must be conditional after timeout or timeout never triggered." ); $$ = nullptr; }
[51d6d6a]1367 | when_clause_opt timeout statement WOR when_clause ELSE statement
[a025ea8]1368 { $$ = build_waitfor_timeout( $2, maybe_build_compound( $3 ), $1, maybe_build_compound( $7 ), $5 ); }
[5b2edbc]1369 ;
1370
1371waitfor_statement:
[51d6d6a]1372 when_clause_opt waitfor statement %prec THEN
[135b431]1373 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1374 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1375 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1376 ;
1377
[51b73452]1378exception_statement:
[9fb1367]1379 TRY compound_statement handler_clause %prec THEN
[e82aa9df]1380 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1381 | TRY compound_statement finally_clause
[e82aa9df]1382 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1383 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1384 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1385 ;
[51b73452]1386
1387handler_clause:
[098f7ff]1388 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1389 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
[098f7ff]1390 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement
[3d26610]1391 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1392 ;
1393
1394handler_predicate_opt:
[7fdb94e1]1395 // empty
[cbce272]1396 { $$ = nullptr; }
[6a276a0]1397 | ';' conditional_expression { $$ = $2; }
[307a732]1398 ;
1399
1400handler_key:
[6a276a0]1401 CATCH { $$ = CatchStmt::Terminate; }
[9fb1367]1402 | RECOVER { $$ = CatchStmt::Terminate; }
[6a276a0]1403 | CATCHRESUME { $$ = CatchStmt::Resume; }
[9fb1367]1404 | FIXUP { $$ = CatchStmt::Resume; }
[4d51835]1405 ;
[51b73452]1406
1407finally_clause:
[6a276a0]1408 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1409 ;
[51b73452]1410
1411exception_declaration:
[d0ffed1]1412 // No SUE declaration in parameter list.
1413 type_specifier_nobody
1414 | type_specifier_nobody declarator
[c0a33d2]1415 { $$ = $2->addType( $1 ); }
[d0ffed1]1416 | type_specifier_nobody variable_abstract_declarator
[4d51835]1417 { $$ = $2->addType( $1 ); }
[033ff37]1418 | cfa_abstract_declarator_tuple identifier // CFA
[c0a33d2]1419 { $$ = $1->addName( $2 ); }
[c0aa336]1420 | cfa_abstract_declarator_tuple // CFA
[4d51835]1421 ;
[51b73452]1422
[2a8427c6]1423enable_disable_statement:
1424 enable_disable_key identifier_list compound_statement
1425 ;
1426
1427enable_disable_key:
1428 ENABLE
1429 | DISABLE
1430 ;
1431
[51b73452]1432asm_statement:
[ab57786]1433 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1434 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1435 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1436 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1437 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1438 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1439 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1440 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1441 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1442 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1443 ;
1444
1445asm_volatile_opt: // GCC
1446 // empty
1447 { $$ = false; }
1448 | VOLATILE
1449 { $$ = true; }
[4d51835]1450 ;
[b87a5ed]1451
1452asm_operands_opt: // GCC
[4d51835]1453 // empty
[58dd019]1454 { $$ = nullptr; } // use default argument
[4d51835]1455 | asm_operands_list
1456 ;
[b87a5ed]1457
1458asm_operands_list: // GCC
[4d51835]1459 asm_operand
1460 | asm_operands_list ',' asm_operand
[4a063df]1461 { $$ = (ExpressionNode *)($1->set_last( $3 )); }
[4d51835]1462 ;
[b87a5ed]1463
1464asm_operand: // GCC
[ab57786]1465 string_literal '(' constant_expression ')'
[408ab79]1466 { $$ = new ExpressionNode( new AsmExpr( nullptr, $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[665f432]1467 | '[' IDENTIFIER ']' string_literal '(' constant_expression ')'
[408ab79]1468 { $$ = new ExpressionNode( new AsmExpr( $2, $4, maybeMoveBuild<Expression>( $6 ) ) ); }
[7f5566b]1469 ;
1470
[4e06c1e]1471asm_clobbers_list_opt: // GCC
[7f5566b]1472 // empty
[58dd019]1473 { $$ = nullptr; } // use default argument
[ab57786]1474 | string_literal
[d1625f8]1475 { $$ = new ExpressionNode( $1 ); }
[ab57786]1476 | asm_clobbers_list_opt ',' string_literal
[4a063df]1477 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( $3 ) )); }
[4d51835]1478 ;
[b87a5ed]1479
[7f5566b]1480label_list:
[033ff37]1481 identifier
[ab57786]1482 {
1483 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1484 delete $1; // allocated by lexer
1485 }
[033ff37]1486 | label_list ',' identifier
[ab57786]1487 {
1488 $$ = $1; $1->labels.push_back( *$3 );
1489 delete $3; // allocated by lexer
1490 }
[4d51835]1491 ;
[51b73452]1492
[c11e31c]1493//******************************* DECLARATIONS *********************************
[51b73452]1494
[b87a5ed]1495declaration_list_opt: // used at beginning of switch statement
[35718a9]1496 // empty
[58dd019]1497 { $$ = nullptr; }
[4d51835]1498 | declaration_list
1499 ;
[51b73452]1500
1501declaration_list:
[4d51835]1502 declaration
[35718a9]1503 | declaration_list declaration
1504 { $$ = $1->appendList( $2 ); }
[4d51835]1505 ;
[51b73452]1506
[407bde5]1507KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1508 // empty
[58dd019]1509 { $$ = nullptr; }
[35718a9]1510 | KR_parameter_list
[4d51835]1511 ;
[51b73452]1512
[35718a9]1513KR_parameter_list:
[4cc585b]1514 push c_declaration pop ';'
1515 { $$ = $2; }
[35718a9]1516 | KR_parameter_list push c_declaration pop ';'
[4d51835]1517 { $$ = $1->appendList( $3 ); }
1518 ;
[b87a5ed]1519
[51b1202]1520local_label_declaration_opt: // GCC, local label
[4d51835]1521 // empty
[51b1202]1522 | local_label_declaration_list
[4d51835]1523 ;
[b87a5ed]1524
[51b1202]1525local_label_declaration_list: // GCC, local label
1526 LABEL local_label_list ';'
1527 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1528 ;
[b87a5ed]1529
[51b1202]1530local_label_list: // GCC, local label
[033ff37]1531 identifier_or_type_name
1532 | local_label_list ',' identifier_or_type_name
[4d51835]1533 ;
[b87a5ed]1534
[936e9f4]1535declaration: // old & new style declarations
[35718a9]1536 c_declaration ';'
1537 | cfa_declaration ';' // CFA
[b47b827]1538 | static_assert // C11
[4d51835]1539 ;
[b87a5ed]1540
[b9be000b]1541static_assert:
1542 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1543 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1544 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1545 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1546
[de62360d]1547// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1548// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1549// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1550// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1551// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1552// block, but cannot be mixed within a specific declaration.
[c11e31c]1553//
[b87a5ed]1554// CFA C
1555// [10] int x; int x[10]; // array of 10 integers
1556// [10] * char y; char *y[10]; // array of 10 pointers to char
1557
[c0aa336]1558cfa_declaration: // CFA
[4cc585b]1559 cfa_variable_declaration
1560 | cfa_typedef_declaration
1561 | cfa_function_declaration
1562 | type_declaring_list
[2501ae5]1563 { SemanticError( yylloc, "otype declaration is currently unimplemented." ); $$ = nullptr; }
[4cc585b]1564 | trait_specifier
[4d51835]1565 ;
[b87a5ed]1566
[c0aa336]1567cfa_variable_declaration: // CFA
1568 cfa_variable_specifier initializer_opt
[7fdb94e1]1569 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1570 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1571 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1572 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1573 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1574 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1575 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1576 ;
[b87a5ed]1577
[c0aa336]1578cfa_variable_specifier: // CFA
[de62360d]1579 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1580 // storage-class
[c0aa336]1581 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1582 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1583 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1584 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1585 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1586 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1587 ;
[b87a5ed]1588
[c0aa336]1589cfa_function_declaration: // CFA
1590 cfa_function_specifier
1591 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1592 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1593 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1594 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1595 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1596 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1597 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1598 {
[481115f]1599 // Append the return type at the start (left-hand-side) to each identifier in the list.
1600 DeclarationNode * ret = new DeclarationNode;
1601 ret->type = maybeClone( $1->type->base );
[40de461]1602 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1603 }
1604 ;
[b87a5ed]1605
[c0aa336]1606cfa_function_specifier: // CFA
[40de461]1607// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1608// {
1609// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1610// }
[40de461]1611// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1612// {
1613// typedefTable.setNextIdentifier( *$5 );
1614// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1615// }
[40de461]1616// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1617// {
1618// typedefTable.setNextIdentifier( *$5 );
1619// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1620// }
1621// | '[' ']' typegen_name
1622 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1623 //
[40de461]1624 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1625 // '[' ']' type_specifier
1626 //
[2871210]1627 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1628 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[c744563a]1629 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
[c0aa336]1630 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c744563a]1631 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
1632 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' attribute_list_opt
1633 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 )->addQualifiers( $8 ); }
[4d51835]1634 ;
[b87a5ed]1635
[c0aa336]1636cfa_function_return: // CFA
[c0a33d2]1637 '[' push cfa_parameter_list pop ']'
1638 { $$ = DeclarationNode::newTuple( $3 ); }
1639 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1640 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1641 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1642 ;
[b87a5ed]1643
[c0aa336]1644cfa_typedef_declaration: // CFA
1645 TYPEDEF cfa_variable_specifier
[4d51835]1646 {
[ecae5860]1647 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1648 $$ = $2->addTypedef();
1649 }
[c0aa336]1650 | TYPEDEF cfa_function_specifier
[4d51835]1651 {
[ecae5860]1652 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1653 $$ = $2->addTypedef();
1654 }
[033ff37]1655 | cfa_typedef_declaration pop ',' push identifier
[4d51835]1656 {
[ecae5860]1657 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1658 $$ = $1->appendList( $1->cloneType( $5 ) );
1659 }
1660 ;
[b87a5ed]1661
[de62360d]1662// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1663// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1664
1665typedef_declaration:
[4d51835]1666 TYPEDEF type_specifier declarator
1667 {
[ecae5860]1668 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1669 $$ = $3->addType( $2 )->addTypedef();
1670 }
1671 | typedef_declaration pop ',' push declarator
1672 {
[ecae5860]1673 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1674 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1675 }
[de62360d]1676 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1677 {
[ecae5860]1678 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1679 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1680 }
1681 | type_specifier TYPEDEF declarator
1682 {
[ecae5860]1683 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1684 $$ = $3->addType( $1 )->addTypedef();
1685 }
1686 | type_specifier TYPEDEF type_qualifier_list declarator
1687 {
[ecae5860]1688 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1689 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1690 }
1691 ;
[b87a5ed]1692
[721f17a]1693typedef_expression:
[25744d2]1694 // deprecated GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[033ff37]1695 TYPEDEF identifier '=' assignment_expression
[4d51835]1696 {
[25744d2]1697 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1698 }
[033ff37]1699 | typedef_expression pop ',' push identifier '=' assignment_expression
[4d51835]1700 {
[25744d2]1701 SemanticError( yylloc, "Typedef expression is deprecated, use typeof(...) instead." ); $$ = nullptr;
[4d51835]1702 }
1703 ;
[51b73452]1704
[c0aa336]1705c_declaration:
[4cc585b]1706 declaration_specifier declaring_list
[7fdb94e1]1707 { $$ = distAttr( $1, $2 ); }
[4cc585b]1708 | typedef_declaration
[25744d2]1709 | typedef_expression // deprecated GCC, naming expression type
[4cc585b]1710 | sue_declaration_specifier
[4d51835]1711 ;
[51b73452]1712
1713declaring_list:
[de62360d]1714 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1715 // storage-class
[c0aa336]1716 declarator asm_name_opt initializer_opt
[7fdb94e1]1717 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1718 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1719 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1720 ;
[b87a5ed]1721
1722declaration_specifier: // type specifier + storage class
[4d51835]1723 basic_declaration_specifier
1724 | sue_declaration_specifier
[84d58c5]1725 | type_declaration_specifier
[4d51835]1726 ;
[b87a5ed]1727
[d0ffed1]1728declaration_specifier_nobody: // type specifier + storage class - {...}
1729 // Preclude SUE declarations in restricted scopes:
1730 //
1731 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1732 //
1733 // because it is impossible to call f due to name equivalence.
1734 basic_declaration_specifier
1735 | sue_declaration_specifier_nobody
[84d58c5]1736 | type_declaration_specifier
[d0ffed1]1737 ;
1738
1739type_specifier: // type specifier
[4d51835]1740 basic_type_specifier
1741 | sue_type_specifier
[84d58c5]1742 | type_type_specifier
[4d51835]1743 ;
[b87a5ed]1744
[d0ffed1]1745type_specifier_nobody: // type specifier - {...}
1746 // Preclude SUE declarations in restricted scopes:
1747 //
1748 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1749 //
1750 // because it is impossible to call f due to name equivalence.
1751 basic_type_specifier
1752 | sue_type_specifier_nobody
[84d58c5]1753 | type_type_specifier
[d0ffed1]1754 ;
1755
[408ab79]1756enum_specifier_nobody: // type specifier - {...}
[ec3f9c8]1757 // Preclude SUE declarations in restricted scopes (see type_specifier_nobody)
[408ab79]1758 basic_type_specifier
1759 | sue_type_specifier_nobody
1760 ;
1761
[b87a5ed]1762type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1763 // empty
[58dd019]1764 { $$ = nullptr; }
[4d51835]1765 | type_qualifier_list
1766 ;
[51b73452]1767
1768type_qualifier_list:
[de62360d]1769 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1770 //
[de62360d]1771 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1772 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1773 // appeared only once.
[4d51835]1774 type_qualifier
1775 | type_qualifier_list type_qualifier
1776 { $$ = $1->addQualifiers( $2 ); }
1777 ;
[51b73452]1778
1779type_qualifier:
[4d51835]1780 type_qualifier_name
1781 | attribute
1782 ;
[51b73452]1783
1784type_qualifier_name:
[4d51835]1785 CONST
[738e304]1786 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1787 | RESTRICT
[738e304]1788 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1789 | VOLATILE
[738e304]1790 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1791 | ATOMIC
[738e304]1792 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1793 | forall
1794 ;
1795
1796forall:
[35718a9]1797 FORALL '(' type_parameter_list ')' // CFA
1798 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1799 ;
[51b73452]1800
1801declaration_qualifier_list:
[4d51835]1802 storage_class_list
[de62360d]1803 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1804 { $$ = $1->addQualifiers( $2 ); }
1805 | declaration_qualifier_list type_qualifier_list storage_class_list
1806 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1807 ;
[51b73452]1808
1809storage_class_list:
[de62360d]1810 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1811 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1812 //
[de62360d]1813 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1814 // specifiers in a declaration.
[4d51835]1815 storage_class
1816 | storage_class_list storage_class
1817 { $$ = $1->addQualifiers( $2 ); }
1818 ;
[51b73452]1819
1820storage_class:
[4d51835]1821 EXTERN
[68fe077a]1822 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1823 | STATIC
[68fe077a]1824 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1825 | AUTO
[68fe077a]1826 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1827 | REGISTER
[68fe077a]1828 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1829 | THREADLOCAL // C11
[68fe077a]1830 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1831 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1832 | INLINE // C99
[ddfd945]1833 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1834 | FORTRAN // C99
[ddfd945]1835 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1836 | NORETURN // C11
[ddfd945]1837 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1838 ;
[51b73452]1839
1840basic_type_name:
[201aeb9]1841 VOID
[4d51835]1842 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1843 | BOOL // C99
1844 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1845 | CHAR
1846 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1847 | INT
1848 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1849 | INT128
1850 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
[f1da02c]1851 | UINT128
1852 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ); }
[201aeb9]1853 | FLOAT
1854 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1855 | DOUBLE
1856 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[e15853c]1857 | uuFLOAT80
1858 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat80 ); }
1859 | uuFLOAT128
1860 { $$ = DeclarationNode::newBasicType( DeclarationNode::uuFloat128 ); }
1861 | uFLOAT16
1862 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat16 ); }
1863 | uFLOAT32
1864 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32 ); }
1865 | uFLOAT32X
1866 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat32x ); }
1867 | uFLOAT64
1868 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64 ); }
1869 | uFLOAT64X
1870 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat64x ); }
1871 | uFLOAT128
1872 { $$ = DeclarationNode::newBasicType( DeclarationNode::uFloat128 ); }
[4d51835]1873 | COMPLEX // C99
[5b639ee]1874 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1875 | IMAGINARY // C99
[5b639ee]1876 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1877 | SIGNED
1878 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1879 | UNSIGNED
1880 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1881 | SHORT
1882 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1883 | LONG
1884 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1885 | VALIST // GCC, __builtin_va_list
1886 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[f673c13c]1887 | AUTO_TYPE
1888 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::AutoType ); }
[4d51835]1889 ;
[51b73452]1890
1891basic_declaration_specifier:
[4d51835]1892 // A semantic check is necessary for conflicting storage classes.
1893 basic_type_specifier
1894 | declaration_qualifier_list basic_type_specifier
1895 { $$ = $2->addQualifiers( $1 ); }
1896 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1897 { $$ = $1->addQualifiers( $2 ); }
1898 | basic_declaration_specifier storage_class type_qualifier_list
1899 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1900 | basic_declaration_specifier storage_class basic_type_specifier
1901 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1902 ;
[51b73452]1903
1904basic_type_specifier:
[84d58c5]1905 direct_type
[f38e7d7]1906 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1907 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1908 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1909 ;
[51b73452]1910
[84d58c5]1911direct_type:
[4d51835]1912 basic_type_name
1913 | type_qualifier_list basic_type_name
1914 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1915 | direct_type type_qualifier
[4d51835]1916 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1917 | direct_type basic_type_name
[4d51835]1918 { $$ = $1->addType( $2 ); }
1919 ;
[51b73452]1920
[84d58c5]1921indirect_type:
[b6ad601]1922 TYPEOF '(' type ')' // GCC: typeof( x ) y;
[4d51835]1923 { $$ = $3; }
[b6ad601]1924 | TYPEOF '(' comma_expression ')' // GCC: typeof( a+b ) y;
[4d51835]1925 { $$ = DeclarationNode::newTypeof( $3 ); }
[b6ad601]1926 | BASETYPEOF '(' type ')' // CFA: basetypeof( x ) y;
1927 { $$ = DeclarationNode::newTypeof( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ), true ); }
1928 | BASETYPEOF '(' comma_expression ')' // CFA: basetypeof( a+b ) y;
1929 { $$ = DeclarationNode::newTypeof( $3, true ); }
[f38e7d7]1930 | ZERO_T // CFA
1931 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1932 | ONE_T // CFA
1933 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1934 ;
[51b73452]1935
[d0ffed1]1936sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1937 sue_type_specifier
1938 | declaration_qualifier_list sue_type_specifier
1939 { $$ = $2->addQualifiers( $1 ); }
1940 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1941 { $$ = $1->addQualifiers( $2 ); }
1942 | sue_declaration_specifier storage_class type_qualifier_list
1943 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1944 ;
[51b73452]1945
[d0ffed1]1946sue_type_specifier: // struct, union, enum + type specifier
1947 elaborated_type
[fdca7c6]1948 | type_qualifier_list
1949 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1950 elaborated_type
1951 { $$ = $3->addQualifiers( $1 ); }
[4d51835]1952 | sue_type_specifier type_qualifier
[284da8c]1953 {
1954 if ( $2->type != nullptr && $2->type->forall ) forall = true; // remember generic type
1955 $$ = $1->addQualifiers( $2 );
1956 }
[4d51835]1957 ;
[51b73452]1958
[d0ffed1]1959sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1960 sue_type_specifier_nobody
1961 | declaration_qualifier_list sue_type_specifier_nobody
1962 { $$ = $2->addQualifiers( $1 ); }
1963 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1964 { $$ = $1->addQualifiers( $2 ); }
1965 | sue_declaration_specifier_nobody storage_class type_qualifier_list
1966 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1967 ;
1968
1969sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1970 elaborated_type_nobody
1971 | type_qualifier_list elaborated_type_nobody
1972 { $$ = $2->addQualifiers( $1 ); }
1973 | sue_type_specifier_nobody type_qualifier
1974 { $$ = $1->addQualifiers( $2 ); }
1975 ;
1976
[84d58c5]1977type_declaration_specifier:
1978 type_type_specifier
1979 | declaration_qualifier_list type_type_specifier
[4d51835]1980 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1981 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]1982 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1983 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]1984 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1985 ;
[b87a5ed]1986
[84d58c5]1987type_type_specifier: // typedef types
1988 type_name
1989 | type_qualifier_list type_name
1990 { $$ = $2->addQualifiers( $1 ); }
1991 | type_type_specifier type_qualifier
1992 { $$ = $1->addQualifiers( $2 ); }
1993 ;
1994
1995type_name:
[4d51835]1996 TYPEDEFname
1997 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]1998 | '.' TYPEDEFname
[47498bd]1999 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), DeclarationNode::newFromTypedef( $2 ) ); }
[84d58c5]2000 | type_name '.' TYPEDEFname
[c5d7701]2001 { $$ = DeclarationNode::newQualifiedType( $1, DeclarationNode::newFromTypedef( $3 ) ); }
[84d58c5]2002 | typegen_name
2003 | '.' typegen_name
[47498bd]2004 { $$ = DeclarationNode::newQualifiedType( DeclarationNode::newFromGlobalScope(), $2 ); }
[84d58c5]2005 | type_name '.' typegen_name
[c5d7701]2006 { $$ = DeclarationNode::newQualifiedType( $1, $3 ); }
[84d58c5]2007 ;
2008
2009typegen_name: // CFA
[65d6de4]2010 TYPEGENname
2011 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2012 | TYPEGENname '(' ')'
[67cf18c]2013 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
2014 | TYPEGENname '(' type_list ')'
[84d58c5]2015 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]2016 ;
[51b73452]2017
[d0ffed1]2018elaborated_type: // struct, union, enum
[c0aa336]2019 aggregate_type
2020 | enum_type
[4d51835]2021 ;
[51b73452]2022
[d0ffed1]2023elaborated_type_nobody: // struct, union, enum - {...}
2024 aggregate_type_nobody
2025 | enum_type_nobody
2026 ;
2027
2028aggregate_type: // struct, union
[fc20514]2029 aggregate_key attribute_list_opt
2030 { forall = false; } // reset
2031 '{' field_declaration_list_opt '}' type_parameters_opt
[777ed2b]2032 { $$ = DeclarationNode::newAggregate( $1, nullptr, $7, $5, true )->addQualifiers( $2 ); }
[73f04fd]2033 | aggregate_key attribute_list_opt identifier
[fdca7c6]2034 {
[26ef3b2]2035 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]2036 forall = false; // reset
2037 }
[284da8c]2038 '{' field_declaration_list_opt '}' type_parameters_opt
[73f04fd]2039 { $$ = DeclarationNode::newAggregate( $1, $3, $8, $6, true )->addQualifiers( $2 ); }
2040 | aggregate_key attribute_list_opt type_name
[407bde5]2041 {
[7de22b28]2042 // for type_name can be a qualified type name S.T, in which case only the last name in the chain needs a typedef (other names in the chain should already have one)
[26ef3b2]2043 typedefTable.makeTypedef( *$3->type->leafName(), forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]2044 forall = false; // reset
2045 }
[284da8c]2046 '{' field_declaration_list_opt '}' type_parameters_opt
[73f04fd]2047 { $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $8, $6, true )->addQualifiers( $2 ); }
[d0ffed1]2048 | aggregate_type_nobody
2049 ;
2050
[284da8c]2051type_parameters_opt:
2052 // empty
2053 { $$ = nullptr; } %prec '}'
2054 | '(' type_list ')'
2055 { $$ = $2; }
2056 ;
2057
[d0ffed1]2058aggregate_type_nobody: // struct, union - {...}
[73f04fd]2059 aggregate_key attribute_list_opt identifier
[84d58c5]2060 {
[26ef3b2]2061 typedefTable.makeTypedef( *$3, forall || typedefTable.getEnclForall() ? TYPEGENname : TYPEDEFname );
[9997fee]2062 forall = false; // reset
[84d58c5]2063 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
2064 }
[73f04fd]2065 | aggregate_key attribute_list_opt type_name
[65d6de4]2066 {
[fc20514]2067 forall = false; // reset
[65d6de4]2068 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
2069 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
2070 // delete newFromTypeGen.
2071 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
2072 $3->type->symbolic.name = nullptr;
2073 $3->type->symbolic.actuals = nullptr;
2074 delete $3;
2075 }
[4d51835]2076 ;
[51b73452]2077
2078aggregate_key:
[e307e12]2079 aggregate_data
2080 | aggregate_control
2081 ;
2082
2083aggregate_data:
[c0aa336]2084 STRUCT
[312029a]2085 { yyy = true; $$ = AggregateDecl::Struct; }
[c0aa336]2086 | UNION
[312029a]2087 { yyy = true; $$ = AggregateDecl::Union; }
[e307e12]2088 | EXCEPTION // CFA
[25744d2]2089 // { yyy = true; $$ = AggregateDecl::Exception; }
2090 { SemanticError( yylloc, "exception aggregate is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[e307e12]2091 ;
2092
2093aggregate_control: // CFA
[cbbd8fd7]2094 MONITOR
2095 { yyy = true; $$ = AggregateDecl::Monitor; }
2096 | MUTEX STRUCT
2097 { yyy = true; $$ = AggregateDecl::Monitor; }
2098 | GENERATOR
[427854b]2099 { yyy = true; $$ = AggregateDecl::Generator; }
[cbbd8fd7]2100 | MUTEX GENERATOR
[aeb5d0d]2101 { SemanticError( yylloc, "monitor generator is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2102 | COROUTINE
[312029a]2103 { yyy = true; $$ = AggregateDecl::Coroutine; }
[cbbd8fd7]2104 | MUTEX COROUTINE
[aeb5d0d]2105 { SemanticError( yylloc, "monitor coroutine is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[d3bc0ad]2106 | THREAD
[312029a]2107 { yyy = true; $$ = AggregateDecl::Thread; }
[cbbd8fd7]2108 | MUTEX THREAD
[aeb5d0d]2109 { SemanticError( yylloc, "monitor thread is currently unimplemented." ); $$ = AggregateDecl::NoAggregate; }
[4d51835]2110 ;
[51b73452]2111
[7fdb94e1]2112field_declaration_list_opt:
[5d125e4]2113 // empty
[58dd019]2114 { $$ = nullptr; }
[7fdb94e1]2115 | field_declaration_list_opt field_declaration
[a7741435]2116 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2117 ;
[51b73452]2118
2119field_declaration:
[679e644]2120 type_specifier field_declaring_list_opt ';'
[f7e4db27]2121 { $$ = fieldDecl( $1, $2 ); }
[679e644]2122 | EXTENSION type_specifier field_declaring_list_opt ';' // GCC
[f7e4db27]2123 { $$ = fieldDecl( $2, $3 ); distExt( $$ ); }
[e07caa2]2124 | INLINE type_specifier field_abstract_list_opt ';' // CFA
[679e644]2125 {
[dea36ee]2126 if ( ! $3 ) { // field declarator ?
2127 $3 = DeclarationNode::newName( nullptr );
2128 } // if
[679a260]2129 $3->inLine = true;
[679e644]2130 $$ = distAttr( $2, $3 ); // mark all fields in list
[e07caa2]2131 distInl( $3 );
[8f91c9ae]2132 }
[e307e12]2133 | INLINE aggregate_control ';' // CFA
2134 { SemanticError( yylloc, "INLINE aggregate control currently unimplemented." ); $$ = nullptr; }
[46fa473]2135 | typedef_declaration ';' // CFA
2136 | cfa_field_declaring_list ';' // CFA, new style field declaration
2137 | EXTENSION cfa_field_declaring_list ';' // GCC
2138 { distExt( $2 ); $$ = $2; } // mark all fields in list
[679e644]2139 | INLINE cfa_field_abstract_list ';' // CFA, new style field declaration
2140 { $$ = $2; } // mark all fields in list
[46fa473]2141 | cfa_typedef_declaration ';' // CFA
[b47b827]2142 | static_assert // C11
[4d51835]2143 ;
[b87a5ed]2144
[679e644]2145field_declaring_list_opt:
2146 // empty
2147 { $$ = nullptr; }
2148 | field_declarator
2149 | field_declaring_list_opt ',' attribute_list_opt field_declarator
[c0aa336]2150 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]2151 ;
[51b73452]2152
[679e644]2153field_declarator:
[e07caa2]2154 bit_subrange_size // C special case, no field name
[4d51835]2155 { $$ = DeclarationNode::newBitfield( $1 ); }
2156 | variable_declarator bit_subrange_size_opt
[679e644]2157 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2158 { $$ = $1->addBitfield( $2 ); }
[c6b1105]2159 | variable_type_redeclarator bit_subrange_size_opt
[679e644]2160 // A semantic check is required to ensure bit_subrange only appears on integral types.
[4d51835]2161 { $$ = $1->addBitfield( $2 ); }
[679e644]2162 ;
2163
[e07caa2]2164field_abstract_list_opt:
2165 // empty
[dea36ee]2166 { $$ = nullptr; }
[e07caa2]2167 | field_abstract
2168 | field_abstract_list_opt ',' attribute_list_opt field_abstract
[679e644]2169 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
2170 ;
2171
[e07caa2]2172field_abstract:
[f7e4db27]2173 // no bit fields
[e07caa2]2174 variable_abstract_declarator
[679e644]2175 ;
2176
2177cfa_field_declaring_list: // CFA, new style field declaration
[f7e4db27]2178 // bit-fields are handled by C declarations
[033ff37]2179 cfa_abstract_declarator_tuple identifier_or_type_name
[679e644]2180 { $$ = $1->addName( $2 ); }
[033ff37]2181 | cfa_field_declaring_list ',' identifier_or_type_name
[679e644]2182 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
2183 ;
2184
2185cfa_field_abstract_list: // CFA, new style field declaration
[f7e4db27]2186 // bit-fields are handled by C declarations
[679e644]2187 cfa_abstract_declarator_tuple
2188 | cfa_field_abstract_list ','
2189 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
[4d51835]2190 ;
[51b73452]2191
2192bit_subrange_size_opt:
[4d51835]2193 // empty
[58dd019]2194 { $$ = nullptr; }
[4d51835]2195 | bit_subrange_size
2196 ;
[51b73452]2197
2198bit_subrange_size:
[c786e1d]2199 ':' assignment_expression
[4d51835]2200 { $$ = $2; }
2201 ;
[51b73452]2202
[73f04fd]2203// Cannot use attribute_list_opt because of ambiguity with enum_specifier_nobody, which already parses attribute.
2204// Hence, only a single attribute is allowed after the "ENUM".
[d0ffed1]2205enum_type: // enum
[408ab79]2206 ENUM attribute_opt '{' enumerator_list comma_opt '}'
[3d7e53b]2207 { $$ = DeclarationNode::newEnum( nullptr, $4, true )->addQualifiers( $2 ); }
[408ab79]2208 | ENUM attribute_opt identifier
[d0ffed1]2209 { typedefTable.makeTypedef( *$3 ); }
2210 '{' enumerator_list comma_opt '}'
2211 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[73f04fd]2212 | ENUM attribute_opt typedef // enum cannot be generic
[407bde5]2213 '{' enumerator_list comma_opt '}'
[408ab79]2214 { $$ = DeclarationNode::newEnum( $3->name, $5, true )->addQualifiers( $2 ); }
2215 | ENUM enum_specifier_nobody '{' enumerator_list comma_opt '}'
2216 // { $$ = DeclarationNode::newEnum( nullptr, $4, true ); }
2217 { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
2218 | ENUM enum_specifier_nobody declarator '{' enumerator_list comma_opt '}'
2219 // {
2220 // typedefTable.makeTypedef( *$3->name );
2221 // $$ = DeclarationNode::newEnum( nullptr, $5, true );
2222 // }
2223 { SemanticError( yylloc, "Typed enumeration is currently unimplemented." ); $$ = nullptr; }
[d0ffed1]2224 | enum_type_nobody
2225 ;
2226
2227enum_type_nobody: // enum - {...}
[408ab79]2228 ENUM attribute_opt identifier
[45161b4d]2229 {
[c0aa336]2230 typedefTable.makeTypedef( *$3 );
[ca1a547]2231 $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 );
[45161b4d]2232 }
[73f04fd]2233 | ENUM attribute_opt type_name // enum cannot be generic
[407bde5]2234 {
2235 typedefTable.makeTypedef( *$3->type->symbolic.name );
2236 $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 );
2237 }
[4d51835]2238 ;
[51b73452]2239
2240enumerator_list:
[033ff37]2241 identifier_or_type_name enumerator_value_opt
[4d51835]2242 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[033ff37]2243 | enumerator_list ',' identifier_or_type_name enumerator_value_opt
[4d51835]2244 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
2245 ;
[51b73452]2246
2247enumerator_value_opt:
[4d51835]2248 // empty
[58dd019]2249 { $$ = nullptr; }
[408ab79]2250 // | '=' constant_expression
2251 // { $$ = $2; }
2252 | '=' initializer
2253 { $$ = $2->get_expression(); } // FIX ME: enum only deals with constant_expression
[4d51835]2254 ;
[51b73452]2255
[5a51798]2256cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]2257 // empty
[2a8427c6]2258 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
2259 | ELLIPSIS
[58dd019]2260 { $$ = nullptr; }
[2a8427c6]2261 | cfa_abstract_parameter_list
[c0aa336]2262 | cfa_parameter_list
[c0a33d2]2263 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
2264 { $$ = $1->appendList( $5 ); }
2265 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]2266 { $$ = $1->addVarArgs(); }
[c0a33d2]2267 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2268 { $$ = $1->addVarArgs(); }
2269 ;
[b87a5ed]2270
[c0aa336]2271cfa_parameter_list: // CFA
2272 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2273 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2274 cfa_parameter_declaration
[c0a33d2]2275 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2276 { $$ = $1->appendList( $5 ); }
2277 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2278 { $$ = $1->appendList( $5 ); }
2279 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2280 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2281 ;
[b87a5ed]2282
[c0aa336]2283cfa_abstract_parameter_list: // CFA, new & old style abstract
2284 cfa_abstract_parameter_declaration
[c0a33d2]2285 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2286 { $$ = $1->appendList( $5 ); }
[4d51835]2287 ;
[51b73452]2288
2289parameter_type_list_opt:
[4d51835]2290 // empty
[58dd019]2291 { $$ = nullptr; }
[2a8427c6]2292 | ELLIPSIS
2293 { $$ = nullptr; }
2294 | parameter_list
[4d51835]2295 | parameter_list pop ',' push ELLIPSIS
2296 { $$ = $1->addVarArgs(); }
2297 ;
[b87a5ed]2298
2299parameter_list: // abstract + real
[4d51835]2300 abstract_parameter_declaration
2301 | parameter_declaration
2302 | parameter_list pop ',' push abstract_parameter_declaration
2303 { $$ = $1->appendList( $5 ); }
2304 | parameter_list pop ',' push parameter_declaration
2305 { $$ = $1->appendList( $5 ); }
2306 ;
[51b73452]2307
[de62360d]2308// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2309// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2310
[c0aa336]2311cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2312 parameter_declaration
[5a51798]2313 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initializer_opt
[4d51835]2314 { $$ = $1->addName( $2 ); }
[5a51798]2315 | cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[c0aa336]2316 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2317 { $$ = $1->addName( $2 ); }
[5a51798]2318 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initializer_opt
[4d51835]2319 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2320 | cfa_function_specifier
[4d51835]2321 ;
[b87a5ed]2322
[c0aa336]2323cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2324 abstract_parameter_declaration
[c0aa336]2325 | cfa_identifier_parameter_declarator_no_tuple
2326 | cfa_abstract_tuple
2327 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2328 | type_qualifier_list cfa_abstract_tuple
[4d51835]2329 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2330 | cfa_abstract_function
[4d51835]2331 ;
[51b73452]2332
2333parameter_declaration:
[d0ffed1]2334 // No SUE declaration in parameter list.
[5a51798]2335 declaration_specifier_nobody identifier_parameter_declarator default_initializer_opt
[7fdb94e1]2336 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[5a51798]2337 | declaration_specifier_nobody type_parameter_redeclarator default_initializer_opt
[7fdb94e1]2338 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2339 ;
[51b73452]2340
2341abstract_parameter_declaration:
[5a51798]2342 declaration_specifier_nobody default_initializer_opt
[e7cc8cb]2343 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[5a51798]2344 | declaration_specifier_nobody abstract_parameter_declarator default_initializer_opt
[e7cc8cb]2345 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2346 ;
[51b73452]2347
[c11e31c]2348// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2349// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2350// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2351
[b87a5ed]2352identifier_list: // K&R-style parameter list => no types
[033ff37]2353 identifier
[4d51835]2354 { $$ = DeclarationNode::newName( $1 ); }
[033ff37]2355 | identifier_list ',' identifier
[4d51835]2356 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2357 ;
[51b73452]2358
[2871210]2359identifier_or_type_name:
[4d51835]2360 identifier
2361 | TYPEDEFname
2362 | TYPEGENname
2363 ;
[51b73452]2364
[84d58c5]2365type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2366 cfa_abstract_declarator_tuple // CFA
[4d51835]2367 | type_specifier
[c0aa336]2368 | type_specifier abstract_declarator
[4d51835]2369 { $$ = $2->addType( $1 ); }
2370 ;
[b87a5ed]2371
[84d58c5]2372type: // typeof, assertion
2373 type_no_function
[c0aa336]2374 | cfa_abstract_function // CFA
[4d51835]2375 ;
[51b73452]2376
2377initializer_opt:
[4d51835]2378 // empty
[58dd019]2379 { $$ = nullptr; }
[2871210]2380 | '=' initializer
2381 { $$ = $2; }
[641c3d0]2382 | '=' VOID
[3ed994e]2383 { $$ = new InitializerNode( true ); }
[097e2b0]2384 | ATassign initializer
[974906e2]2385 { $$ = $2->set_maybeConstructed( false ); }
[4d51835]2386 ;
[51b73452]2387
2388initializer:
[de62360d]2389 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2390 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2391 ;
[51b73452]2392
[7fdb94e1]2393initializer_list_opt:
[097e2b0]2394 // empty
[58dd019]2395 { $$ = nullptr; }
[097e2b0]2396 | initializer
[4d51835]2397 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2398 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2399 | initializer_list_opt ',' designation initializer
[4a063df]2400 { $$ = (InitializerNode *)($1->set_last( $4->set_designators( $3 ) )); }
[4d51835]2401 ;
[b87a5ed]2402
[de62360d]2403// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2404// '=' to separator the designator from the initializer value, as in:
[c11e31c]2405//
[b87a5ed]2406// int x[10] = { [1] = 3 };
[c11e31c]2407//
[de62360d]2408// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2409// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2410// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2411// shift/reduce conflicts
[51b73452]2412
2413designation:
[4d51835]2414 designator_list ':' // C99, CFA uses ":" instead of "="
[033ff37]2415 | identifier ':' // GCC, field name
[d1625f8]2416 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2417 ;
[51b73452]2418
[b87a5ed]2419designator_list: // C99
[4d51835]2420 designator
[2871210]2421 | designator_list designator
[4a063df]2422 { $$ = (ExpressionNode *)($1->set_last( $2 )); }
[d1625f8]2423 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2424 ;
[51b73452]2425
2426designator:
[033ff37]2427 '.' identifier // C99, field name
[d1625f8]2428 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2429 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2430 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2431 { $$ = $3; }
[c0a33d2]2432 | '[' push subrange pop ']' // CFA, multiple array elements
2433 { $$ = $3; }
2434 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
[408ab79]2435 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $3 ), maybeMoveBuild<Expression>( $5 ) ) ); }
[679e644]2436 | '.' '[' push field_name_list pop ']' // CFA, tuple field selector
[c0a33d2]2437 { $$ = $4; }
[4d51835]2438 ;
[51b73452]2439
[de62360d]2440// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2441// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2442//
2443// Overloading: function, data, and operator identifiers may be overloaded.
2444//
[3ca7ef3]2445// Type declarations: "otype" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
[de62360d]2446// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2447// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2448//
[de62360d]2449// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2450// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2451//
2452// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2453// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2454// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2455// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2456// on type arguments of polymorphic functions.
[c11e31c]2457
[b87a5ed]2458type_parameter_list: // CFA
[67cf18c]2459 type_parameter
2460 | type_parameter_list ',' type_parameter
[4d51835]2461 { $$ = $1->appendList( $3 ); }
2462 ;
[b87a5ed]2463
[84d58c5]2464type_initializer_opt: // CFA
2465 // empty
2466 { $$ = nullptr; }
2467 | '=' type
2468 { $$ = $2; }
2469 ;
2470
[b87a5ed]2471type_parameter: // CFA
[033ff37]2472 type_class identifier_or_type_name
[408ab79]2473 {
2474 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
[ec3f9c8]2475 if ( $1 == TypeDecl::Otype ) { SemanticError( yylloc, "otype keyword is deprecated, use T " ); }
2476 if ( $1 == TypeDecl::Dtype ) { SemanticError( yylloc, "dtype keyword is deprecated, use T &" ); }
2477 if ( $1 == TypeDecl::Ttype ) { SemanticError( yylloc, "ttype keyword is deprecated, use T ..." ); }
[fd54fef]2478 }
[5a51798]2479 type_initializer_opt assertion_list_opt
[67cf18c]2480 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[5a51798]2481 | identifier_or_type_name new_type_class
2482 { typedefTable.addToScope( *$1, TYPEDEFname, "9" ); }
2483 type_initializer_opt assertion_list_opt
2484 { $$ = DeclarationNode::newTypeParam( $2, $1 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
2485 | '[' identifier_or_type_name ']'
[b66d14a]2486 {
2487 typedefTable.addToScope( *$2, TYPEDEFname, "9" );
2488 $$ = DeclarationNode::newTypeParam( TypeDecl::ALtype, $2 );
2489 }
[5a51798]2490 // | type_specifier identifier_parameter_declarator
[9997fee]2491 | assertion_list
[07de76b]2492 { $$ = DeclarationNode::newTypeParam( TypeDecl::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2493 ;
[b87a5ed]2494
[5a51798]2495new_type_class: // CFA
2496 // empty
2497 { $$ = TypeDecl::Otype; }
2498 | '&'
2499 { $$ = TypeDecl::Dtype; }
2500 | '*'
[b66d14a]2501 { $$ = TypeDecl::DStype; } // dtype + sized
[5a51798]2502 | ELLIPSIS
2503 { $$ = TypeDecl::Ttype; }
2504 ;
2505
[b87a5ed]2506type_class: // CFA
[4040425]2507 OTYPE
[07de76b]2508 { $$ = TypeDecl::Otype; }
[4d51835]2509 | DTYPE
[07de76b]2510 { $$ = TypeDecl::Dtype; }
[8f60f0b]2511 | FTYPE
[07de76b]2512 { $$ = TypeDecl::Ftype; }
[8f60f0b]2513 | TTYPE
[07de76b]2514 { $$ = TypeDecl::Ttype; }
[4d51835]2515 ;
[b87a5ed]2516
2517assertion_list_opt: // CFA
[4d51835]2518 // empty
[58dd019]2519 { $$ = nullptr; }
[9997fee]2520 | assertion_list
2521 ;
2522
2523assertion_list: // CFA
2524 assertion
2525 | assertion_list assertion
[3ca7ef3]2526 { $$ = $1->appendList( $2 ); }
[4d51835]2527 ;
[b87a5ed]2528
2529assertion: // CFA
[033ff37]2530 '|' identifier_or_type_name '(' type_list ')'
[7fdb94e1]2531 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2532 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2533 { $$ = $4; }
[35718a9]2534 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2535 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2536 ;
[b87a5ed]2537
[84d58c5]2538type_list: // CFA
2539 type
[513e165]2540 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2541 | assignment_expression
[3007c0b]2542 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $1->build()) ); $$ = nullptr; }
[84d58c5]2543 | type_list ',' type
[4a063df]2544 { $$ = (ExpressionNode *)($1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) )); }
[84d58c5]2545 | type_list ',' assignment_expression
[3007c0b]2546 { SemanticError( yylloc, toString("Expression generic parameters are currently unimplemented: ", $3->build()) ); $$ = nullptr; }
2547 // { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2548 ;
[b87a5ed]2549
2550type_declaring_list: // CFA
[4040425]2551 OTYPE type_declarator
[4d51835]2552 { $$ = $2; }
[4040425]2553 | storage_class_list OTYPE type_declarator
[4d51835]2554 { $$ = $3->addQualifiers( $1 ); }
2555 | type_declaring_list ',' type_declarator
[a7c90d4]2556 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2557 ;
[b87a5ed]2558
2559type_declarator: // CFA
[4d51835]2560 type_declarator_name assertion_list_opt
2561 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2562 | type_declarator_name assertion_list_opt '=' type
[4d51835]2563 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2564 ;
[b87a5ed]2565
2566type_declarator_name: // CFA
[033ff37]2567 identifier_or_type_name
[4d51835]2568 {
[ecae5860]2569 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2570 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2571 }
[033ff37]2572 | identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2573 {
[ecae5860]2574 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2575 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2576 }
2577 ;
[b87a5ed]2578
[4040425]2579trait_specifier: // CFA
[033ff37]2580 TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' '}'
[35718a9]2581 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
[033ff37]2582 | TRAIT identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
[35718a9]2583 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2584 ;
[b87a5ed]2585
[84d58c5]2586trait_declaration_list: // CFA
[4040425]2587 trait_declaration
[13e8427]2588 | trait_declaration_list pop push trait_declaration
2589 { $$ = $1->appendList( $4 ); }
[4d51835]2590 ;
[b87a5ed]2591
[84d58c5]2592trait_declaration: // CFA
[13e8427]2593 cfa_trait_declaring_list ';'
2594 | trait_declaring_list ';'
[4d51835]2595 ;
[b87a5ed]2596
[c0aa336]2597cfa_trait_declaring_list: // CFA
2598 cfa_variable_specifier
2599 | cfa_function_specifier
2600 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2601 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2602 ;
[b87a5ed]2603
[4040425]2604trait_declaring_list: // CFA
[4d51835]2605 type_specifier declarator
[7fdb94e1]2606 { $$ = $2->addType( $1 ); }
[4040425]2607 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2608 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2609 ;
[51b73452]2610
[c11e31c]2611//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2612
2613translation_unit:
[3d56d15b]2614 // empty, input file
[4d51835]2615 | external_definition_list
[a7741435]2616 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2617 ;
[51b73452]2618
2619external_definition_list:
[35718a9]2620 push external_definition pop
2621 { $$ = $2; }
[fc20514]2622 | external_definition_list push external_definition pop
2623 { $$ = $1 ? $1->appendList( $3 ) : $3; }
[4d51835]2624 ;
[51b73452]2625
2626external_definition_list_opt:
[4d51835]2627 // empty
[58dd019]2628 { $$ = nullptr; }
[3d56d15b]2629 | external_definition_list
2630 ;
2631
2632up:
[fc20514]2633 { typedefTable.up( forall ); forall = false; }
[3d56d15b]2634 ;
2635
2636down:
2637 { typedefTable.down(); }
[4d51835]2638 ;
[51b73452]2639
2640external_definition:
[4d51835]2641 declaration
2642 | external_function_definition
[ecae5860]2643 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2644 {
2645 distExt( $2 ); // mark all fields in list
2646 $$ = $2;
2647 }
[e994912]2648 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
2649 {
[6d539f83]2650 $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) );
[e994912]2651 }
[c0aa336]2652 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2653 {
[3b8e52c]2654 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d912bed]2655 linkage = LinkageSpec::update( yylloc, linkage, $2 );
[4d51835]2656 }
[3d56d15b]2657 '{' up external_definition_list_opt down '}'
[4d51835]2658 {
2659 linkage = linkageStack.top();
2660 linkageStack.pop();
[3d56d15b]2661 $$ = $6;
[8e9cbb2]2662 }
[9997fee]2663 | type_qualifier_list
2664 {
[3d56d15b]2665 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2666 if ( $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2667 }
2668 '{' up external_definition_list_opt down '}' // CFA, namespace
2669 {
[4c3ee8d]2670 distQual( $5, $1 );
[fc20514]2671 forall = false;
[3d56d15b]2672 $$ = $5;
[9997fee]2673 }
2674 | declaration_qualifier_list
2675 {
[4c3ee8d]2676 if ( $1->type && $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2677 if ( $1->type && $1->type->forall ) forall = true; // remember generic type
[3d56d15b]2678 }
2679 '{' up external_definition_list_opt down '}' // CFA, namespace
2680 {
[4c3ee8d]2681 distQual( $5, $1 );
[fc20514]2682 forall = false;
[3d56d15b]2683 $$ = $5;
[9997fee]2684 }
2685 | declaration_qualifier_list type_qualifier_list
2686 {
[3d56d15b]2687 if ( ($1->type && $1->type->qualifiers.val) || $2->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
[fc20514]2688 if ( ($1->type && $1->type->forall) || $2->type->forall ) forall = true; // remember generic type
[9997fee]2689 }
[3d56d15b]2690 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2691 {
[284da8c]2692 distQual( $6, $1->addQualifiers( $2 ) );
[fc20514]2693 forall = false;
[3d56d15b]2694 $$ = $6;
[9997fee]2695 }
[4d51835]2696 ;
2697
2698external_function_definition:
2699 function_definition
[de62360d]2700 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2701 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2702 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2703 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2704 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2705 | function_declarator compound_statement
[c0a33d2]2706 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2707 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2708 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2709 ;
[51b73452]2710
[8b47e50]2711with_clause_opt:
2712 // empty
[9997fee]2713 { $$ = nullptr; forall = false; }
[578e6037]2714 | WITH '(' tuple_expression_list ')'
[9997fee]2715 { $$ = $3; forall = false; }
[8b47e50]2716 ;
2717
[51b73452]2718function_definition:
[8b47e50]2719 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2720 {
[481115f]2721 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2722 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2723 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2724 $$ = $1;
[4d51835]2725 }
[8b47e50]2726 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2727 {
[c38ae92]2728 rebindForall( $1, $2 );
[7fdb94e1]2729 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2730 }
2731 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2732 {
2733 rebindForall( $1, $2 );
[5fcba14]2734 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2735 }
[a16a7ec]2736 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2737 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2738 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2739 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2740 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2741 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2742 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2743 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2744 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2745
2746 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2747 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2748 {
[c38ae92]2749 rebindForall( $1, $2 );
[5fcba14]2750 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2751 }
[a16a7ec]2752 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2753 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2754 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2755 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2756 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2757 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2758 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2759 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2760 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2761 ;
[51b73452]2762
2763declarator:
[4d51835]2764 variable_declarator
[c6b1105]2765 | variable_type_redeclarator
[4d51835]2766 | function_declarator
2767 ;
[51b73452]2768
2769subrange:
[4d51835]2770 constant_expression '~' constant_expression // CFA, integer subrange
[408ab79]2771 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild<Expression>( $1 ), maybeMoveBuild<Expression>( $3 ) ) ); }
[4d51835]2772 ;
[b87a5ed]2773
2774asm_name_opt: // GCC
[4d51835]2775 // empty
[58dd019]2776 { $$ = nullptr; }
2777 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2778 {
2779 DeclarationNode * name = new DeclarationNode();
2780 name->asmName = $3;
2781 $$ = name->addQualifiers( $5 );
2782 }
[4d51835]2783 ;
[b87a5ed]2784
2785attribute_list_opt: // GCC
[4d51835]2786 // empty
[58dd019]2787 { $$ = nullptr; }
[4d51835]2788 | attribute_list
2789 ;
[b87a5ed]2790
2791attribute_list: // GCC
[4d51835]2792 attribute
2793 | attribute_list attribute
[1db21619]2794 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2795 ;
[b87a5ed]2796
[408ab79]2797attribute_opt:
2798 // empty
2799 { $$ = nullptr; }
2800 | attribute
2801 ;
2802
[b87a5ed]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
2864variable_declarator:
[4d51835]2865 paren_identifier attribute_list_opt
[1db21619]2866 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2867 | variable_ptr
2868 | variable_array attribute_list_opt
[1db21619]2869 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2870 | variable_function attribute_list_opt
[1db21619]2871 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2872 ;
[51b73452]2873
2874paren_identifier:
[4d51835]2875 identifier
[7fdb94e1]2876 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2877 | '(' paren_identifier ')' // redundant parenthesis
2878 { $$ = $2; }
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 ) ); }
[c0aa336]2886 | '(' variable_ptr ')' attribute_list_opt
2887 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2888 ;
[51b73452]2889
2890variable_array:
[4d51835]2891 paren_identifier array_dimension
2892 { $$ = $1->addArray( $2 ); }
2893 | '(' variable_ptr ')' array_dimension
2894 { $$ = $2->addArray( $4 ); }
2895 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
2896 { $$ = $2->addArray( $4 ); }
2897 | '(' variable_array ')' // redundant parenthesis
2898 { $$ = $2; }
2899 ;
[51b73452]2900
2901variable_function:
[4d51835]2902 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2903 { $$ = $2->addParamList( $6 ); }
2904 | '(' variable_function ')' // redundant parenthesis
2905 { $$ = $2; }
2906 ;
[51b73452]2907
[c6b1105]2908// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2909// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2910// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2911
2912function_declarator:
[4d51835]2913 function_no_ptr attribute_list_opt
[1db21619]2914 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2915 | function_ptr
2916 | function_array attribute_list_opt
[1db21619]2917 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2918 ;
[51b73452]2919
2920function_no_ptr:
[4d51835]2921 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2922 { $$ = $1->addParamList( $4 ); }
2923 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2924 { $$ = $2->addParamList( $6 ); }
2925 | '(' function_no_ptr ')' // redundant parenthesis
2926 { $$ = $2; }
2927 ;
[51b73452]2928
2929function_ptr:
[dd51906]2930 ptrref_operator function_declarator
[ce8c12f]2931 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2932 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]2933 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[4d51835]2934 | '(' function_ptr ')'
2935 { $$ = $2; }
2936 ;
[51b73452]2937
2938function_array:
[4d51835]2939 '(' function_ptr ')' array_dimension
2940 { $$ = $2->addArray( $4 ); }
2941 | '(' function_array ')' multi_array_dimension // redundant parenthesis
2942 { $$ = $2->addArray( $4 ); }
2943 | '(' function_array ')' // redundant parenthesis
2944 { $$ = $2; }
2945 ;
[51b73452]2946
[c0aa336]2947// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2948//
2949// f( a, b, c ) int a, *b, c[]; {}
2950//
2951// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2952// returning arrays and functions versus pointers to arrays and functions.
[51b73452]2953
[c0aa336]2954KR_function_declarator:
2955 KR_function_no_ptr
2956 | KR_function_ptr
2957 | KR_function_array
[4d51835]2958 ;
[51b73452]2959
[c0aa336]2960KR_function_no_ptr:
[4d51835]2961 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2962 { $$ = $1->addIdList( $3 ); }
[c0a33d2]2963 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2964 { $$ = $2->addParamList( $6 ); }
[c0aa336]2965 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]2966 { $$ = $2; }
2967 ;
[51b73452]2968
[c0aa336]2969KR_function_ptr:
2970 ptrref_operator KR_function_declarator
[ce8c12f]2971 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]2972 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]2973 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2974 | '(' KR_function_ptr ')'
[4d51835]2975 { $$ = $2; }
2976 ;
[51b73452]2977
[c0aa336]2978KR_function_array:
2979 '(' KR_function_ptr ')' array_dimension
[4d51835]2980 { $$ = $2->addArray( $4 ); }
[c0aa336]2981 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2982 { $$ = $2->addArray( $4 ); }
[c0aa336]2983 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]2984 { $$ = $2; }
2985 ;
[51b73452]2986
[2871210]2987// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]2988//
[b87a5ed]2989// typedef int foo;
2990// {
2991// int foo; // redefine typedef name in new scope
2992// }
[c11e31c]2993//
[de62360d]2994// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2995// and functions versus pointers to arrays and functions.
[51b73452]2996
[c6b1105]2997variable_type_redeclarator:
[2871210]2998 paren_type attribute_list_opt
[1db21619]2999 { $$ = $1->addQualifiers( $2 ); }
[2871210]3000 | type_ptr
3001 | type_array attribute_list_opt
[1db21619]3002 { $$ = $1->addQualifiers( $2 ); }
[2871210]3003 | type_function attribute_list_opt
[1db21619]3004 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3005 ;
[51b73452]3006
[2871210]3007paren_type:
3008 typedef
[2f0a0678]3009 // hide type name in enclosing scope by variable name
[c4f68dc]3010 {
3011 // if ( ! typedefTable.existsCurr( *$1->name ) ) {
3012 typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" );
3013 // } else {
3014 // SemanticError( yylloc, string("'") + *$1->name + "' redeclared as different kind of symbol." ); $$ = nullptr;
3015 // } // if
3016 }
[2871210]3017 | '(' paren_type ')'
[4d51835]3018 { $$ = $2; }
3019 ;
[51b73452]3020
[2871210]3021type_ptr:
[c6b1105]3022 ptrref_operator variable_type_redeclarator
[ce8c12f]3023 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]3024 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]3025 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3026 | '(' type_ptr ')' attribute_list_opt
[c4f68dc]3027 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]3028 ;
[51b73452]3029
[2871210]3030type_array:
3031 paren_type array_dimension
[4d51835]3032 { $$ = $1->addArray( $2 ); }
[2871210]3033 | '(' type_ptr ')' array_dimension
[4d51835]3034 { $$ = $2->addArray( $4 ); }
[2871210]3035 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]3036 { $$ = $2->addArray( $4 ); }
[2871210]3037 | '(' type_array ')' // redundant parenthesis
[4d51835]3038 { $$ = $2; }
3039 ;
[51b73452]3040
[2871210]3041type_function:
3042 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3043 { $$ = $1->addParamList( $4 ); }
[2871210]3044 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]3045 { $$ = $2->addParamList( $6 ); }
[2871210]3046 | '(' type_function ')' // redundant parenthesis
[4d51835]3047 { $$ = $2; }
3048 ;
[51b73452]3049
[c0aa336]3050// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
3051// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
3052// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
3053// pointers to arrays and functions.
[51b73452]3054
3055identifier_parameter_declarator:
[4d51835]3056 paren_identifier attribute_list_opt
[1db21619]3057 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3058 | '&' MUTEX paren_identifier attribute_list_opt
3059 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]3060 | identifier_parameter_ptr
3061 | identifier_parameter_array attribute_list_opt
[1db21619]3062 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3063 | identifier_parameter_function attribute_list_opt
[1db21619]3064 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3065 ;
[51b73452]3066
3067identifier_parameter_ptr:
[dd51906]3068 ptrref_operator identifier_parameter_declarator
[ce8c12f]3069 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3070 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]3071 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3072 | '(' identifier_parameter_ptr ')' attribute_list_opt
3073 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3074 ;
[51b73452]3075
3076identifier_parameter_array:
[4d51835]3077 paren_identifier array_parameter_dimension
3078 { $$ = $1->addArray( $2 ); }
3079 | '(' identifier_parameter_ptr ')' array_dimension
3080 { $$ = $2->addArray( $4 ); }
3081 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
3082 { $$ = $2->addArray( $4 ); }
3083 | '(' identifier_parameter_array ')' // redundant parenthesis
3084 { $$ = $2; }
3085 ;
[51b73452]3086
3087identifier_parameter_function:
[c0a33d2]3088 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3089 { $$ = $1->addParamList( $4 ); }
3090 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3091 { $$ = $2->addParamList( $6 ); }
[4d51835]3092 | '(' identifier_parameter_function ')' // redundant parenthesis
3093 { $$ = $2; }
3094 ;
[b87a5ed]3095
[de62360d]3096// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
3097// e.g.:
[c11e31c]3098//
[b87a5ed]3099// typedef int foo;
[114014c]3100// forall( otype T ) struct foo;
[b87a5ed]3101// int f( int foo ); // redefine typedef name in new scope
[c11e31c]3102//
[c0aa336]3103// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]3104
[2871210]3105type_parameter_redeclarator:
[4d51835]3106 typedef attribute_list_opt
[1db21619]3107 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]3108 | '&' MUTEX typedef attribute_list_opt
3109 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]3110 | type_parameter_ptr
3111 | type_parameter_array attribute_list_opt
[1db21619]3112 { $$ = $1->addQualifiers( $2 ); }
[2871210]3113 | type_parameter_function attribute_list_opt
[1db21619]3114 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3115 ;
[51b73452]3116
3117typedef:
[4d51835]3118 TYPEDEFname
[7fdb94e1]3119 { $$ = DeclarationNode::newName( $1 ); }
[2871210]3120 | TYPEGENname
[7fdb94e1]3121 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]3122 ;
[51b73452]3123
[2871210]3124type_parameter_ptr:
[dd51906]3125 ptrref_operator type_parameter_redeclarator
[ce8c12f]3126 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3127 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]3128 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3129 | '(' type_parameter_ptr ')' attribute_list_opt
3130 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3131 ;
[51b73452]3132
[2871210]3133type_parameter_array:
[4d51835]3134 typedef array_parameter_dimension
3135 { $$ = $1->addArray( $2 ); }
[2871210]3136 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]3137 { $$ = $2->addArray( $4 ); }
3138 ;
[51b73452]3139
[2871210]3140type_parameter_function:
[c0a33d2]3141 typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3142 { $$ = $1->addParamList( $4 ); }
3143 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3144 { $$ = $2->addParamList( $6 ); }
[4d51835]3145 ;
[b87a5ed]3146
[de62360d]3147// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
3148// which the type applies, e.g.:
[c11e31c]3149//
[b87a5ed]3150// sizeof( int );
[c0aa336]3151// sizeof( int * );
[b87a5ed]3152// sizeof( int [10] );
[c0aa336]3153// sizeof( int (*)() );
3154// sizeof( int () );
[c11e31c]3155//
[de62360d]3156// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
3157// and functions versus pointers to arrays and functions.
[51b73452]3158
3159abstract_declarator:
[4d51835]3160 abstract_ptr
3161 | abstract_array attribute_list_opt
[1db21619]3162 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3163 | abstract_function attribute_list_opt
[1db21619]3164 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3165 ;
[51b73452]3166
3167abstract_ptr:
[dd51906]3168 ptrref_operator
[ce8c12f]3169 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3170 | ptrref_operator type_qualifier_list
[ce8c12f]3171 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3172 | ptrref_operator abstract_declarator
[ce8c12f]3173 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3174 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]3175 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3176 | '(' abstract_ptr ')' attribute_list_opt
3177 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3178 ;
[51b73452]3179
3180abstract_array:
[4d51835]3181 array_dimension
3182 | '(' abstract_ptr ')' array_dimension
3183 { $$ = $2->addArray( $4 ); }
3184 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
3185 { $$ = $2->addArray( $4 ); }
3186 | '(' abstract_array ')' // redundant parenthesis
3187 { $$ = $2; }
3188 ;
[51b73452]3189
3190abstract_function:
[c0a33d2]3191 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3192 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3193 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3194 { $$ = $2->addParamList( $6 ); }
[4d51835]3195 | '(' abstract_function ')' // redundant parenthesis
3196 { $$ = $2; }
3197 ;
[51b73452]3198
3199array_dimension:
[4d51835]3200 // Only the first dimension can be empty.
[2871210]3201 '[' ']'
[4d51835]3202 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]3203 | '[' ']' multi_array_dimension
3204 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[6a99803]3205 | '[' push assignment_expression pop ',' comma_expression ']'
3206 { $$ = DeclarationNode::newArray( $3, 0, false )->addArray( DeclarationNode::newArray( $6, 0, false ) ); }
3207 // { SemanticError( yylloc, "New array dimension is currently unimplemented." ); $$ = nullptr; }
[4d51835]3208 | multi_array_dimension
3209 ;
[51b73452]3210
3211multi_array_dimension:
[c0a33d2]3212 '[' push assignment_expression pop ']'
3213 { $$ = DeclarationNode::newArray( $3, 0, false ); }
3214 | '[' push '*' pop ']' // C99
[4d51835]3215 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]3216 | multi_array_dimension '[' push assignment_expression pop ']'
3217 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
3218 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]3219 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
3220 ;
[51b73452]3221
[c11e31c]3222// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
3223// identifier to which the type applies, e.g.:
3224//
[c0aa336]3225// int f( int ); // not handled here
3226// int f( int * ); // abstract function-prototype parameter; no parameter name specified
3227// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]3228// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3229//
[de62360d]3230// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]3231// and functions versus pointers to arrays and functions. In addition, the pattern handles the
3232// special meaning of parenthesis around a typedef name:
3233//
3234// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
3235// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
3236// not as redundant parentheses around the identifier."
3237//
3238// For example:
3239//
3240// typedef float T;
3241// int f( int ( T [5] ) ); // see abstract_parameter_declarator
3242// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
3243// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
3244// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
3245//
3246// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
3247// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
3248// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
3249// functions.
[51b73452]3250
3251abstract_parameter_declarator:
[4d51835]3252 abstract_parameter_ptr
[b6b3c42]3253 | '&' MUTEX attribute_list_opt
3254 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]3255 | abstract_parameter_array attribute_list_opt
[1db21619]3256 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3257 | abstract_parameter_function attribute_list_opt
[1db21619]3258 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3259 ;
[51b73452]3260
3261abstract_parameter_ptr:
[dd51906]3262 ptrref_operator
[ce8c12f]3263 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]3264 | ptrref_operator type_qualifier_list
[ce8c12f]3265 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3266 | ptrref_operator abstract_parameter_declarator
[ce8c12f]3267 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]3268 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]3269 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3270 | '(' abstract_parameter_ptr ')' attribute_list_opt
3271 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3272 ;
[51b73452]3273
3274abstract_parameter_array:
[4d51835]3275 array_parameter_dimension
3276 | '(' abstract_parameter_ptr ')' array_parameter_dimension
3277 { $$ = $2->addArray( $4 ); }
3278 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
3279 { $$ = $2->addArray( $4 ); }
3280 | '(' abstract_parameter_array ')' // redundant parenthesis
3281 { $$ = $2; }
3282 ;
[51b73452]3283
3284abstract_parameter_function:
[c0a33d2]3285 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3286 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3287 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3288 { $$ = $2->addParamList( $6 ); }
[4d51835]3289 | '(' abstract_parameter_function ')' // redundant parenthesis
3290 { $$ = $2; }
3291 ;
[51b73452]3292
3293array_parameter_dimension:
[4d51835]3294 // Only the first dimension can be empty or have qualifiers.
3295 array_parameter_1st_dimension
3296 | array_parameter_1st_dimension multi_array_dimension
3297 { $$ = $1->addArray( $2 ); }
3298 | multi_array_dimension
3299 ;
[51b73452]3300
[c11e31c]3301// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3302//
[de62360d]3303// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3304// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3305
3306array_parameter_1st_dimension:
[2871210]3307 '[' ']'
[4d51835]3308 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3309 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3310 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3311 { $$ = DeclarationNode::newVarArray( $3 ); }
3312 | '[' push type_qualifier_list pop ']'
3313 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3314 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3315 | '[' push type_qualifier_list assignment_expression pop ']'
3316 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3317 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3318 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3319 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3320 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3321 ;
[b87a5ed]3322
[c0aa336]3323// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3324//
[c0aa336]3325// struct S {
3326// int;
3327// int *;
3328// int [10];
3329// int (*)();
3330// };
[51b73452]3331
3332variable_abstract_declarator:
[4d51835]3333 variable_abstract_ptr
3334 | variable_abstract_array attribute_list_opt
[1db21619]3335 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3336 | variable_abstract_function attribute_list_opt
[1db21619]3337 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3338 ;
[51b73452]3339
3340variable_abstract_ptr:
[dd51906]3341 ptrref_operator
[ce8c12f]3342 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3343 | ptrref_operator type_qualifier_list
[ce8c12f]3344 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3345 | ptrref_operator variable_abstract_declarator
[ce8c12f]3346 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3347 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3348 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3349 | '(' variable_abstract_ptr ')' attribute_list_opt
3350 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3351 ;
[51b73452]3352
3353variable_abstract_array:
[4d51835]3354 array_dimension
3355 | '(' variable_abstract_ptr ')' array_dimension
3356 { $$ = $2->addArray( $4 ); }
3357 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3358 { $$ = $2->addArray( $4 ); }
3359 | '(' variable_abstract_array ')' // redundant parenthesis
3360 { $$ = $2; }
3361 ;
[51b73452]3362
3363variable_abstract_function:
[c0a33d2]3364 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3365 { $$ = $2->addParamList( $6 ); }
[4d51835]3366 | '(' variable_abstract_function ')' // redundant parenthesis
3367 { $$ = $2; }
3368 ;
[b87a5ed]3369
[de62360d]3370// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3371// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3372
[c0aa336]3373cfa_identifier_parameter_declarator_tuple: // CFA
3374 cfa_identifier_parameter_declarator_no_tuple
3375 | cfa_abstract_tuple
3376 | type_qualifier_list cfa_abstract_tuple
[4d51835]3377 { $$ = $2->addQualifiers( $1 ); }
3378 ;
[b87a5ed]3379
[c0aa336]3380cfa_identifier_parameter_declarator_no_tuple: // CFA
3381 cfa_identifier_parameter_ptr
3382 | cfa_identifier_parameter_array
[4d51835]3383 ;
[b87a5ed]3384
[c0aa336]3385cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3386 // No SUE declaration in parameter list.
3387 ptrref_operator type_specifier_nobody
[ce8c12f]3388 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3389 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3390 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3391 | ptrref_operator cfa_abstract_function
[ce8c12f]3392 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3393 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3394 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3395 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3396 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3397 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3398 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3399 ;
[b87a5ed]3400
[c0aa336]3401cfa_identifier_parameter_array: // CFA
[de62360d]3402 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3403 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3404 '[' ']' type_specifier_nobody
[2871210]3405 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3406 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3407 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3408 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3409 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3410 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3411 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3412 | multi_array_dimension type_specifier_nobody
[4d51835]3413 { $$ = $2->addNewArray( $1 ); }
[9059213]3414
[c0aa336]3415 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3416 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3417 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3418 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3419 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3420 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3421 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3422 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3423 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3424 { $$ = $2->addNewArray( $1 ); }
3425 ;
[51b73452]3426
[c0aa336]3427cfa_array_parameter_1st_dimension:
[c0a33d2]3428 '[' push type_qualifier_list '*' pop ']' // remaining C99
3429 { $$ = DeclarationNode::newVarArray( $3 ); }
3430 | '[' push type_qualifier_list assignment_expression pop ']'
3431 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3432 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3433 // declaration_qualifier_list must be used because of shift/reduce conflict with
3434 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3435 // appear in this context.
[c0a33d2]3436 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3437 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3438 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3439 ;
[b87a5ed]3440
[de62360d]3441// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3442// identifier to which the type applies, e.g.:
[c11e31c]3443//
[b87a5ed]3444// [int] f( int ); // abstract variable parameter; no parameter name specified
3445// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3446//
3447// These rules need LR(3):
3448//
[c0aa336]3449// cfa_abstract_tuple identifier_or_type_name
[40de461]3450// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3451//
3452// since a function return type can be syntactically identical to a tuple type:
3453//
[b87a5ed]3454// [int, int] t;
3455// [int, int] f( int );
[c11e31c]3456//
[2871210]3457// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3458// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3459// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3460// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3461
[c0aa336]3462cfa_abstract_declarator_tuple: // CFA
3463 cfa_abstract_tuple
3464 | type_qualifier_list cfa_abstract_tuple
[4d51835]3465 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3466 | cfa_abstract_declarator_no_tuple
[4d51835]3467 ;
[b87a5ed]3468
[c0aa336]3469cfa_abstract_declarator_no_tuple: // CFA
3470 cfa_abstract_ptr
3471 | cfa_abstract_array
[4d51835]3472 ;
[b87a5ed]3473
[c0aa336]3474cfa_abstract_ptr: // CFA
[dd51906]3475 ptrref_operator type_specifier
[ce8c12f]3476 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3477 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3478 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3479 | ptrref_operator cfa_abstract_function
[ce8c12f]3480 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3481 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3482 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3483 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3484 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3485 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3486 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3487 ;
[b87a5ed]3488
[c0aa336]3489cfa_abstract_array: // CFA
[de62360d]3490 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3491 // empty (void) function return type.
[2871210]3492 '[' ']' type_specifier
[2298f728]3493 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3494 | '[' ']' multi_array_dimension type_specifier
[2298f728]3495 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3496 | multi_array_dimension type_specifier
3497 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3498 | '[' ']' cfa_abstract_ptr
[2298f728]3499 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3500 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3501 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3502 | multi_array_dimension cfa_abstract_ptr
[4d51835]3503 { $$ = $2->addNewArray( $1 ); }
3504 ;
[b87a5ed]3505
[c0aa336]3506cfa_abstract_tuple: // CFA
[c0a33d2]3507 '[' push cfa_abstract_parameter_list pop ']'
3508 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3509 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3510 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3511 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3512 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3513 ;
[b87a5ed]3514
[c0aa336]3515cfa_abstract_function: // CFA
[40de461]3516// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3517// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3518 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3519 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3520 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3521 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3522 ;
[b87a5ed]3523
[de62360d]3524// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3525// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3526//
[de62360d]3527// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3528// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3529//
3530// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3531// prototype-format parameter type declarators) is an obsolescent feature."
3532//
[de62360d]3533// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3534// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3535
[c11e31c]3536//************************* MISCELLANEOUS ********************************
[51b73452]3537
[b87a5ed]3538comma_opt: // redundant comma
[4d51835]3539 // empty
3540 | ','
3541 ;
[51b73452]3542
[5a51798]3543default_initializer_opt:
[4d51835]3544 // empty
[58dd019]3545 { $$ = nullptr; }
[4d51835]3546 | '=' assignment_expression
3547 { $$ = $2; }
3548 ;
[51b73452]3549
3550%%
[a1c9ddd]3551
[c11e31c]3552// ----end of grammar----
[51b73452]3553
[c11e31c]3554// Local Variables: //
[b87a5ed]3555// mode: c++ //
[de62360d]3556// tab-width: 4 //
[c11e31c]3557// compile-command: "make install" //
3558// End: //
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