source: src/Parser/parser.yy@ 287da46

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr no_list persistent-indexer pthread-emulation qualifiedEnum
Last change on this file since 287da46 was 203c667, checked in by Peter A. Buhr <pabuhr@…>, 7 years ago

clean up

  • Property mode set to 100644
File size: 124.5 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
[203c667]12// Last Modified On : Sun Jun 24 10:41:10 2018
13// Update Count : 3587
[974906e2]14//
[c11e31c]15
[de62360d]16// This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C
17// grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS. While parts have been
18// copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar.
19// In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax
20// that must be subsequently rejected by semantic checks. Nevertheless, there are still several semantic checks
21// required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions.
[c11e31c]22
[de62360d]23// Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with
24// the grammar.
[c11e31c]25
26// The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for:
27//
28// 1. designation with '=' (use ':' instead)
29//
[de62360d]30// Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar also has
31// two levels of extensions. The first extensions cover most of the GCC C extensions, except for:
[c11e31c]32//
[e7aed49]33// 1. designation with and without '=' (use ':' instead)
[c0aa336]34// 2. attributes not allowed in parenthesis of declarator
[c11e31c]35//
[de62360d]36// All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall
37// (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the
38// syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable
39// parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation"
40// grammar rule.
[51b73452]41
42%{
[b87a5ed]43#define YYDEBUG_LEXER_TEXT (yylval) // lexer loads this up each time
44#define YYDEBUG 1 // get the pretty debugging code to compile
[201aeb9]45#define YYERROR_VERBOSE // more information in syntax errors
[51b73452]46
47#undef __GNUC_MINOR__
48
49#include <cstdio>
50#include <stack>
[9ed4f94]51using namespace std;
52
[51b73452]53#include "ParseNode.h"
[984dce6]54#include "TypedefTable.h"
[1db21619]55#include "TypeData.h"
[51b73452]56#include "LinkageSpec.h"
[9ed4f94]57#include "Common/SemanticError.h" // error_str
[513e165]58#include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
[51b73452]59
[cbaee0d]60extern DeclarationNode * parseTree;
[8b7ee09]61extern LinkageSpec::Spec linkage;
[0da3e2c]62extern TypedefTable typedefTable;
63
[2298f728]64stack< LinkageSpec::Spec > linkageStack;
[7bf7fb9]65
[15697ff]66bool appendStr( string & to, string & from ) {
67 // 1. Multiple strings are concatenated into a single string but not combined internally. The reason is that
[ea0c5e3]68 // "\x12" "3" is treated as 2 characters versus 1 because "escape sequences are converted into single members of
[15697ff]69 // the execution character set just prior to adjacent string literal concatenation" (C11, Section 6.4.5-8). It is
70 // easier to let the C compiler handle this case.
71 //
72 // 2. String encodings are transformed into canonical form (one encoding at start) so the encoding can be found
73 // without searching the string, e.g.: "abc" L"def" L"ghi" => L"abc" "def" "ghi". Multiple encodings must match,
74 // i.e., u"a" U"b" L"c" is disallowed.
75
76 if ( from[0] != '"' ) { // encoding ?
77 if ( to[0] != '"' ) { // encoding ?
[ea0c5e3]78 if ( to[0] != from[0] || to[1] != from[1] ) { // different encodings ?
[15697ff]79 yyerror( "non-matching string encodings for string-literal concatenation" );
80 return false; // parse error, must call YYERROR in action
[ea0c5e3]81 } else if ( from[1] == '8' ) {
82 from.erase( 0, 1 ); // remove 2nd encoding
[15697ff]83 } // if
84 } else {
[ea0c5e3]85 if ( from[1] == '8' ) { // move encoding to start
86 to = "u8" + to;
87 from.erase( 0, 1 ); // remove 2nd encoding
88 } else {
89 to = from[0] + to;
90 } // if
[15697ff]91 } // if
92 from.erase( 0, 1 ); // remove 2nd encoding
93 } // if
94 to += " " + from; // concatenated into single string
95 return true;
[7bf7fb9]96} // appendStr
[c0aa336]97
98DeclarationNode * distAttr( DeclarationNode * specifier, DeclarationNode * declList ) {
99 // distribute declaration_specifier across all declared variables, e.g., static, const, __attribute__.
100 DeclarationNode * cur = declList, * cl = (new DeclarationNode)->addType( specifier );
101 //cur->addType( specifier );
102 for ( cur = dynamic_cast< DeclarationNode * >( cur->get_next() ); cur != nullptr; cur = dynamic_cast< DeclarationNode * >( cur->get_next() ) ) {
103 cl->cloneBaseType( cur );
104 } // for
105 declList->addType( cl );
106// delete cl;
107 return declList;
108} // distAttr
109
110void distExt( DeclarationNode * declaration ) {
111 // distribute EXTENSION across all declarations
112 for ( DeclarationNode *iter = declaration; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
113 iter->set_extension( true );
114 } // for
115} // distExt
[fdca7c6]116
[c38ae92]117// There is an ambiguity for inline generic-routine return-types and generic routines.
118// forall( otype T ) struct S { int i; } bar( T ) {}
119// Does the forall bind to the struct or the routine, and how would it be possible to explicitly specify the binding.
120// forall( otype T ) struct S { int T; } forall( otype W ) bar( W ) {}
[7fdb94e1]121// Currently, the forall is associated with the routine, and the generic type has to be separately defined:
122// forall( otype T ) struct S { int T; };
123// forall( otype W ) bar( W ) {}
[c38ae92]124
125void rebindForall( DeclarationNode * declSpec, DeclarationNode * funcDecl ) {
[7fdb94e1]126 if ( declSpec->type->kind == TypeData::Aggregate ) { // ignore aggregate definition
[c38ae92]127 funcDecl->type->forall = declSpec->type->aggregate.params; // move forall from aggregate to function type
128 declSpec->type->aggregate.params = nullptr;
129 } // if
130} // rebindForall
131
[dc7db63]132NameExpr * build_postfix_name( const string * name ) {
133 NameExpr * new_name = build_varref( new string( "?`" + *name ) );
134 delete name;
135 return new_name;
136} // build_postfix_name
137
[3d56d15b]138bool forall = false, xxx = false, yyy = false; // aggregate have one or more forall qualifiers ?
[d48e529]139
[201aeb9]140// https://www.gnu.org/software/bison/manual/bison.html#Location-Type
141#define YYLLOC_DEFAULT(Cur, Rhs, N) \
142if ( N ) { \
143 (Cur).first_line = YYRHSLOC( Rhs, 1 ).first_line; \
144 (Cur).first_column = YYRHSLOC( Rhs, 1 ).first_column; \
145 (Cur).last_line = YYRHSLOC( Rhs, N ).last_line; \
146 (Cur).last_column = YYRHSLOC( Rhs, N ).last_column; \
147 (Cur).filename = YYRHSLOC( Rhs, 1 ).filename; \
148} else { \
149 (Cur).first_line = (Cur).last_line = YYRHSLOC( Rhs, 0 ).last_line; \
150 (Cur).first_column = (Cur).last_column = YYRHSLOC( Rhs, 0 ).last_column; \
151 (Cur).filename = YYRHSLOC( Rhs, 0 ).filename; \
152}
[51b73452]153%}
154
[15697ff]155%define parse.error verbose
156
[201aeb9]157// Types declaration for productions
[a67b60e]158%union
159{
160 Token tok;
161 ParseNode * pn;
162 ExpressionNode * en;
163 DeclarationNode * decl;
164 DeclarationNode::Aggregate aggKey;
165 DeclarationNode::TypeClass tclass;
166 StatementNode * sn;
[135b431]167 WaitForStmt * wfs;
[e612146c]168 Expression * constant;
[936e9f4]169 IfCtl * ifctl;
[a67b60e]170 ForCtl * fctl;
171 LabelNode * label;
172 InitializerNode * in;
173 OperKinds op;
174 std::string * str;
175 bool flag;
[307a732]176 CatchStmt::Kind catch_kind;
[d807ca28]177 GenericExpr * genexpr;
[a67b60e]178}
179
[c11e31c]180//************************* TERMINAL TOKENS ********************************
[51b73452]181
[c11e31c]182// keywords
[51b73452]183%token TYPEDEF
[a7c90d4]184%token EXTERN STATIC AUTO REGISTER
185%token THREADLOCAL // C11
186%token INLINE FORTRAN // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
187%token NORETURN // C11
[51b73452]188%token CONST VOLATILE
[b87a5ed]189%token RESTRICT // C99
[a7c90d4]190%token ATOMIC // C11
[51d6d6a]191%token FORALL MUTEX VIRTUAL // CFA
[72457b6]192%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
[b87a5ed]193%token BOOL COMPLEX IMAGINARY // C99
[201aeb9]194%token INT128 FLOAT80 FLOAT128 // GCC
[72457b6]195%token ZERO_T ONE_T // CFA
196%token VALIST // GCC
[b87a5ed]197%token TYPEOF LABEL // GCC
[51b73452]198%token ENUM STRUCT UNION
[c27fb59]199%token EXCEPTION // CFA
[d3bc0ad]200%token COROUTINE MONITOR THREAD // CFA
[a7c90d4]201%token OTYPE FTYPE DTYPE TTYPE TRAIT // CFA
[5721a6d]202%token SIZEOF OFFSETOF
[b87a5ed]203%token ATTRIBUTE EXTENSION // GCC
[51b73452]204%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
[114014c]205%token CHOOSE DISABLE ENABLE FALLTHRU FALLTHROUGH TRY CATCH CATCHRESUME FINALLY THROW THROWRESUME AT WITH WHEN WAITFOR // CFA
[b87a5ed]206%token ASM // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
[a7c90d4]207%token ALIGNAS ALIGNOF GENERIC STATICASSERT // C11
[51b73452]208
[c11e31c]209// names and constants: lexer differentiates between identifier and typedef names
[b87a5ed]210%token<tok> IDENTIFIER QUOTED_IDENTIFIER TYPEDEFname TYPEGENname
[5b2edbc]211%token<tok> TIMEOUT WOR
[b87a5ed]212%token<tok> ATTR_IDENTIFIER ATTR_TYPEDEFname ATTR_TYPEGENname
[1b29996]213%token<tok> INTEGERconstant CHARACTERconstant STRINGliteral
[61fc4f6]214%token<tok> DIRECTIVE
[1b29996]215// Floating point constant is broken into three kinds of tokens because of the ambiguity with tuple indexing and
216// overloading constants 0/1, e.g., x.1 is lexed as (x)(.1), where (.1) is a factional constant, but is semantically
217// converted into the tuple index (.)(1). e.g., 3.x
[930f69e]218%token<tok> FLOATING_DECIMALconstant FLOATING_FRACTIONconstant FLOATINGconstant
[51b73452]219
[c11e31c]220// multi-character operators
[b87a5ed]221%token ARROW // ->
222%token ICR DECR // ++ --
223%token LS RS // << >>
224%token LE GE EQ NE // <= >= == !=
225%token ANDAND OROR // && ||
226%token ELLIPSIS // ...
227
[e5f2a67]228%token EXPassign MULTassign DIVassign MODassign // \= *= /= %=
[b87a5ed]229%token PLUSassign MINUSassign // += -=
230%token LSassign RSassign // <<= >>=
231%token ANDassign ERassign ORassign // &= ^= |=
[51b73452]232
[e7aed49]233%token ATassign // @=
[097e2b0]234
[6165ce7]235%type<tok> identifier no_attr_identifier
[84d58c5]236%type<tok> identifier_or_type_name no_attr_identifier_or_type_name attr_name
[5b2edbc]237%type<tok> quasi_keyword
[ab57786]238%type<constant> string_literal
239%type<str> string_literal_list
[51b73452]240
[c11e31c]241// expressions
[d1625f8]242%type<en> constant
[b87a5ed]243%type<en> tuple tuple_expression_list
[9706554]244%type<op> ptrref_operator unary_operator assignment_operator
[b87a5ed]245%type<en> primary_expression postfix_expression unary_expression
[994d080]246%type<en> cast_expression exponential_expression multiplicative_expression additive_expression
247%type<en> shift_expression relational_expression equality_expression
248%type<en> AND_expression exclusive_OR_expression inclusive_OR_expression
249%type<en> logical_AND_expression logical_OR_expression
250%type<en> conditional_expression constant_expression assignment_expression assignment_expression_opt
[b87a5ed]251%type<en> comma_expression comma_expression_opt
[994d080]252%type<en> argument_expression_list argument_expression default_initialize_opt
[936e9f4]253%type<ifctl> if_control_expression
[2f22cc4]254%type<fctl> for_control_expression
[51b73452]255%type<en> subrange
[c0aa336]256%type<decl> asm_name_opt
[7f5566b]257%type<en> asm_operands_opt asm_operands_list asm_operand
258%type<label> label_list
[d1625f8]259%type<en> asm_clobbers_list_opt
[7f5566b]260%type<flag> asm_volatile_opt
[cbce272]261%type<en> handler_predicate_opt
[d807ca28]262%type<genexpr> generic_association generic_assoc_list
[51b73452]263
[c11e31c]264// statements
[9bd6105]265%type<sn> statement labeled_statement compound_statement
266%type<sn> statement_decl statement_decl_list statement_list_nodecl
[3d26610]267%type<sn> selection_statement if_statement
[6a276a0]268%type<sn> switch_clause_list_opt switch_clause_list
[9bd6105]269%type<en> case_value
270%type<sn> case_clause case_value_list case_label case_label_list
[8b47e50]271%type<sn> iteration_statement jump_statement
[9bd6105]272%type<sn> expression_statement asm_statement
[c453ac4]273%type<sn> with_statement
274%type<en> with_clause_opt
[51d6d6a]275%type<sn> exception_statement handler_clause finally_clause
276%type<catch_kind> handler_key
[b6b3c42]277%type<sn> mutex_statement
[9bd6105]278%type<en> when_clause when_clause_opt waitfor timeout
[135b431]279%type<sn> waitfor_statement
[51d6d6a]280%type<wfs> waitfor_clause
[51b73452]281
[c11e31c]282// declarations
[c0aa336]283%type<decl> abstract_declarator abstract_ptr abstract_array abstract_function array_dimension multi_array_dimension
284%type<decl> abstract_parameter_declarator abstract_parameter_ptr abstract_parameter_array abstract_parameter_function array_parameter_dimension array_parameter_1st_dimension
285%type<decl> abstract_parameter_declaration
[51b73452]286
287%type<aggKey> aggregate_key
[d0ffed1]288%type<decl> aggregate_type aggregate_type_nobody
[51b73452]289
[9997fee]290%type<decl> assertion assertion_list assertion_list_opt
[51b73452]291
292%type<en> bit_subrange_size_opt bit_subrange_size
293
[84d58c5]294%type<decl> basic_declaration_specifier basic_type_name basic_type_specifier direct_type indirect_type
[51b73452]295
[4040425]296%type<decl> trait_declaration trait_declaration_list trait_declaring_list trait_specifier
[51b73452]297
298%type<decl> declaration declaration_list declaration_list_opt declaration_qualifier_list
[d0ffed1]299%type<decl> declaration_specifier declaration_specifier_nobody declarator declaring_list
[51b73452]300
[d0ffed1]301%type<decl> elaborated_type elaborated_type_nobody
[51b73452]302
[d0ffed1]303%type<decl> enumerator_list enum_type enum_type_nobody
[51b73452]304%type<en> enumerator_value_opt
305
[3d56d15b]306%type<decl> external_definition external_definition_list external_definition_list_opt
307
308%type<decl> exception_declaration
[51b73452]309
[7fdb94e1]310%type<decl> field_declaration field_declaration_list_opt field_declarator_opt field_declaring_list
[df22130]311%type<en> field field_list field_name fraction_constants_opt
[51b73452]312
[4d51835]313%type<decl> external_function_definition function_definition function_array function_declarator function_no_ptr function_ptr
[51b73452]314
[d3bc0ad]315%type<decl> identifier_parameter_declarator identifier_parameter_ptr identifier_parameter_array identifier_parameter_function
316%type<decl> identifier_list
[51b73452]317
[c0aa336]318%type<decl> cfa_abstract_array cfa_abstract_declarator_no_tuple cfa_abstract_declarator_tuple
319%type<decl> cfa_abstract_function cfa_abstract_parameter_declaration cfa_abstract_parameter_list
320%type<decl> cfa_abstract_ptr cfa_abstract_tuple
[51b73452]321
[c0aa336]322%type<decl> cfa_array_parameter_1st_dimension
[51b73452]323
[c0aa336]324%type<decl> cfa_trait_declaring_list cfa_declaration cfa_field_declaring_list
325%type<decl> cfa_function_declaration cfa_function_return cfa_function_specifier
[51b73452]326
[c0aa336]327%type<decl> cfa_identifier_parameter_array cfa_identifier_parameter_declarator_no_tuple
328%type<decl> cfa_identifier_parameter_declarator_tuple cfa_identifier_parameter_ptr
[51b73452]329
[40de461]330%type<decl> cfa_parameter_declaration cfa_parameter_list cfa_parameter_ellipsis_list_opt
[51b73452]331
[c0aa336]332%type<decl> cfa_typedef_declaration cfa_variable_declaration cfa_variable_specifier
[51b73452]333
[b9be000b]334%type<decl> c_declaration static_assert
[c0aa336]335%type<decl> KR_function_declarator KR_function_no_ptr KR_function_ptr KR_function_array
[35718a9]336%type<decl> KR_parameter_list KR_parameter_list_opt
[51b73452]337
[2a8427c6]338%type<decl> parameter_declaration parameter_list parameter_type_list_opt
[51b73452]339
[2871210]340%type<decl> paren_identifier paren_type
[51b73452]341
[0da3e2c]342%type<decl> storage_class storage_class_list
[51b73452]343
[d0ffed1]344%type<decl> sue_declaration_specifier sue_declaration_specifier_nobody sue_type_specifier sue_type_specifier_nobody
[51b73452]345
346%type<tclass> type_class
347%type<decl> type_declarator type_declarator_name type_declaring_list
348
[84d58c5]349%type<decl> type_declaration_specifier type_type_specifier type_name typegen_name
350%type<decl> typedef typedef_declaration typedef_expression
[c0aa336]351
352%type<decl> variable_type_redeclarator type_ptr type_array type_function
353
354%type<decl> type_parameter_redeclarator type_parameter_ptr type_parameter_array type_parameter_function
[51b73452]355
[84d58c5]356%type<decl> type type_no_function
357%type<decl> type_parameter type_parameter_list type_initializer_opt
[51b73452]358
[84d58c5]359%type<en> type_list
[51b73452]360
[a16a7ec]361%type<decl> type_qualifier type_qualifier_name forall type_qualifier_list_opt type_qualifier_list
[d3bc0ad]362%type<decl> type_specifier type_specifier_nobody
[51b73452]363
[c0aa336]364%type<decl> variable_declarator variable_ptr variable_array variable_function
365%type<decl> variable_abstract_declarator variable_abstract_ptr variable_abstract_array variable_abstract_function
[51b73452]366
[44a81853]367%type<decl> attribute_list_opt attribute_list attribute_name_list attribute attribute_name
[1db21619]368
[c11e31c]369// initializers
[7fdb94e1]370%type<in> initializer initializer_list_opt initializer_opt
[51b73452]371
[c11e31c]372// designators
[51b73452]373%type<en> designator designator_list designation
374
375
[65d6de4]376// Handle shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is ambiguous:
377// .---------. matches IF '(' comma_expression ')' statement . (reduce)
378// if ( C ) S1 else S2
379// `-----------------' matches IF '(' comma_expression ')' statement . (shift) ELSE statement */
[5b2edbc]380// Similar issues exit with the waitfor statement.
[51b73452]381
[1efa1e1]382// Order of these lines matters (low-to-high precedence). THEN is left associative over WOR/TIMEOUT/ELSE, WOR is left
383// associative over TIMEOUT/ELSE, and TIMEOUT is left associative over ELSE.
[5b2edbc]384%precedence THEN // rule precedence for IF/WAITFOR statement
385%precedence WOR // token precedence for start of WOR in WAITFOR statement
386%precedence TIMEOUT // token precedence for start of TIMEOUT in WAITFOR statement
387%precedence ELSE // token precedence for start of else clause in IF/WAITFOR statement
[51b73452]388
[65d6de4]389// Handle shift/reduce conflict for generic type by shifting the '(' token. For example, this string is ambiguous:
390// forall( otype T ) struct Foo { T v; };
391// .-----. matches pointer to function returning a generic (which is impossible without a type)
392// Foo ( *fp )( int );
393// `---' matches start of TYPEGENname '('
394// Must be:
[a16a7ec]395// Foo( int ) ( *fp )( int );
[65d6de4]396
397// Order of these lines matters (low-to-high precedence).
398%precedence TYPEGENname
399%precedence '('
400
[f38e7d7]401%locations // support location tracking for error messages
[930f69e]402
[b87a5ed]403%start translation_unit // parse-tree root
[51b73452]404
405%%
[c11e31c]406//************************* Namespace Management ********************************
407
[3d26610]408// The C grammar is not context free because it relies on the distinct terminal symbols "identifier" and "TYPEDEFname",
409// which are lexically identical.
[c11e31c]410//
[3d26610]411// typedef int foo; // identifier foo must now be scanned as TYPEDEFname
412// foo f; // to allow it to appear in this context
[c11e31c]413//
[3d26610]414// While it may be possible to write a purely context-free grammar, such a grammar would obscure the relationship
415// between syntactic and semantic constructs. Cforall compounds this problem by introducing type names local to the
416// scope of a declaration (for instance, those introduced through "forall" qualifiers), and by introducing "type
417// generators" -- parameterized types. This latter type name creates a third class of identifiers, "TYPEGENname", which
418// must be distinguished by the lexical scanner.
[c11e31c]419//
[3d26610]420// Since the scanner cannot distinguish among the different classes of identifiers without some context information,
421// there is a type table (typedefTable), which holds type names and identifiers that override type names, for each named
422// scope. During parsing, semantic actions update the type table by adding new identifiers in the current scope. For
423// each context that introduces a name scope, a new level is created in the type table and that level is popped on
424// exiting the scope. Since type names can be local to a particular declaration, each declaration is itself a scope.
425// This requires distinguishing between type names that are local to the current declaration scope and those that
426// persist past the end of the declaration (i.e., names defined in "typedef" or "otype" declarations).
[c11e31c]427//
[3d26610]428// The non-terminals "push" and "pop" denote the opening and closing of named scopes. Every push has a matching pop in
429// the production rule. There are multiple lists of declarations, where each declaration is a named scope, so pop/push
430// around the list separator.
431//
432// int f( forall(T) T (*f1) T , forall( S ) S (*f2)( S ) );
433// push pop push pop
[51b73452]434
435push:
[ab57786]436 { typedefTable.enterScope(); }
[4d51835]437 ;
[51b73452]438
439pop:
[ab57786]440 { typedefTable.leaveScope(); }
[4d51835]441 ;
[51b73452]442
[c11e31c]443//************************* CONSTANTS ********************************
[51b73452]444
445constant:
[de62360d]446 // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration constant".
[ab57786]447 INTEGERconstant { $$ = new ExpressionNode( build_constantInteger( *$1 ) ); }
[930f69e]448 | FLOATING_DECIMALconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
449 | FLOATING_FRACTIONconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
[ab57786]450 | FLOATINGconstant { $$ = new ExpressionNode( build_constantFloat( *$1 ) ); }
451 | CHARACTERconstant { $$ = new ExpressionNode( build_constantChar( *$1 ) ); }
[4d51835]452 ;
[51b73452]453
[5b2edbc]454quasi_keyword: // CFA
455 TIMEOUT
456 | WOR
457 ;
458
[51b73452]459identifier:
[4d51835]460 IDENTIFIER
461 | ATTR_IDENTIFIER // CFA
[5b2edbc]462 | quasi_keyword
[4d51835]463 ;
[51b73452]464
465no_attr_identifier:
[4d51835]466 IDENTIFIER
[5b2edbc]467 | quasi_keyword
[4d51835]468 ;
[51b73452]469
[ab57786]470string_literal:
471 string_literal_list { $$ = build_constantStr( *$1 ); }
472 ;
473
[b87a5ed]474string_literal_list: // juxtaposed strings are concatenated
[ab57786]475 STRINGliteral { $$ = $1; } // conversion from tok to str
[7bf7fb9]476 | string_literal_list STRINGliteral
477 {
[15697ff]478 if ( ! appendStr( *$1, *$2 ) ) YYERROR; // append 2nd juxtaposed string to 1st
[7bf7fb9]479 delete $2; // allocated by lexer
[ab57786]480 $$ = $1; // conversion from tok to str
[7bf7fb9]481 }
[4d51835]482 ;
[51b73452]483
[c11e31c]484//************************* EXPRESSIONS ********************************
[51b73452]485
486primary_expression:
[4d51835]487 IDENTIFIER // typedef name cannot be used as a variable name
[d1625f8]488 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[5b2edbc]489 | quasi_keyword
490 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[1b29996]491 | tuple
[4d51835]492 | '(' comma_expression ')'
493 { $$ = $2; }
494 | '(' compound_statement ')' // GCC, lambda expression
[513e165]495 { $$ = new ExpressionNode( new StmtExpr( dynamic_cast< CompoundStmt * >(maybeMoveBuild< Statement >($2) ) ) ); }
[7e419e7]496 | constant '`' IDENTIFIER // CFA, postfix call
[dc7db63]497 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), $1 ) ); }
[7e419e7]498 | string_literal '`' IDENTIFIER // CFA, postfix call
[dc7db63]499 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), new ExpressionNode( $1 ) ) ); }
[7e419e7]500 | IDENTIFIER '`' IDENTIFIER // CFA, postfix call
[dc7db63]501 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), new ExpressionNode( build_varref( $1 ) ) ) ); }
[7e419e7]502 | tuple '`' IDENTIFIER // CFA, postfix call
[dc7db63]503 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $3 ) ), $1 ) ); }
[7e419e7]504 | '(' comma_expression ')' '`' IDENTIFIER // CFA, postfix call
[dc7db63]505 { $$ = new ExpressionNode( build_func( new ExpressionNode( build_postfix_name( $5 ) ), $2 ) ); }
[84d58c5]506 | type_name '.' no_attr_identifier // CFA, nested type
[203c667]507 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[7fdb94e1]508 | type_name '.' '[' field_list ']' // CFA, nested type / tuple field selector
[203c667]509 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[24c3b67]510 | GENERIC '(' assignment_expression ',' generic_assoc_list ')' // C11
[d807ca28]511 {
512 // add the missing control expression to the GenericExpr and return it
513 $5->control = maybeMoveBuild<Expression>( $3 );
514 $$ = new ExpressionNode( $5 );
515 }
[24c3b67]516 ;
517
518generic_assoc_list: // C11
[d807ca28]519 generic_association
[24c3b67]520 | generic_assoc_list ',' generic_association
[d807ca28]521 {
522 // steal the association node from the singleton and delete the wrapper
523 $1->associations.splice($1->associations.end(), $3->associations);
524 delete $3;
525 $$ = $1;
526 }
[24c3b67]527 ;
528
529generic_association: // C11
530 type_no_function ':' assignment_expression
[d807ca28]531 {
532 // create a GenericExpr wrapper with one association pair
533 $$ = new GenericExpr( nullptr, { { maybeMoveBuildType($1), maybeMoveBuild<Expression>($3) } } );
534 }
[24c3b67]535 | DEFAULT ':' assignment_expression
[d807ca28]536 { $$ = new GenericExpr( nullptr, { { maybeMoveBuild<Expression>($3) } } ); }
[4d51835]537 ;
[51b73452]538
539postfix_expression:
[4d51835]540 primary_expression
[7fdb94e1]541 | postfix_expression '[' assignment_expression ']'
[c6b1105]542 // CFA, comma_expression disallowed in this context because it results in a common user error: subscripting a
[de62360d]543 // matrix with x[i,j] instead of x[i][j]. While this change is not backwards compatible, there seems to be
544 // little advantage to this feature and many disadvantages. It is possible to write x[(i,j)] in CFA, which is
545 // equivalent to the old x[i,j].
[7fdb94e1]546 { $$ = new ExpressionNode( build_binary_val( OperKinds::Index, $1, $3 ) ); }
[bd3d9e4]547 | postfix_expression '{' argument_expression_list '}' // CFA, constructor call
548 {
549 Token fn;
550 fn.str = new std::string( "?{}" ); // location undefined - use location of '{'?
551 $$ = new ExpressionNode( new ConstructorExpr( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $1 )->set_last( $3 ) ) ) );
552 }
[4d51835]553 | postfix_expression '(' argument_expression_list ')'
[d1625f8]554 { $$ = new ExpressionNode( build_func( $1, $3 ) ); }
[4d51835]555 | postfix_expression '.' no_attr_identifier
[d1625f8]556 { $$ = new ExpressionNode( build_fieldSel( $1, build_varref( $3 ) ) ); }
[df22130]557 | postfix_expression '.' INTEGERconstant // CFA, tuple index
558 { $$ = new ExpressionNode( build_fieldSel( $1, build_constantInteger( *$3 ) ) ); }
[930f69e]559 | postfix_expression FLOATING_FRACTIONconstant // CFA, tuple index
560 { $$ = new ExpressionNode( build_fieldSel( $1, build_field_name_FLOATING_FRACTIONconstant( *$2 ) ) ); }
[7fdb94e1]561 | postfix_expression '.' '[' field_list ']' // CFA, tuple field selector
562 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]563 | postfix_expression ARROW no_attr_identifier
[861799c7]564 {
565 $$ = new ExpressionNode( build_pfieldSel( $1, *$3 == "0" || *$3 == "1" ? build_constantInteger( *$3 ) : build_varref( $3 ) ) );
566 }
567 | postfix_expression ARROW INTEGERconstant // CFA, tuple index
568 { $$ = new ExpressionNode( build_pfieldSel( $1, build_constantInteger( *$3 ) ) ); }
[7fdb94e1]569 | postfix_expression ARROW '[' field_list ']' // CFA, tuple field selector
570 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]571 | postfix_expression ICR
[d1625f8]572 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::IncrPost, $1 ) ); }
[4d51835]573 | postfix_expression DECR
[d1625f8]574 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::DecrPost, $1 ) ); }
[7fdb94e1]575 | '(' type_no_function ')' '{' initializer_list_opt comma_opt '}' // C99, compound-literal
[d1625f8]576 { $$ = new ExpressionNode( build_compoundLiteral( $2, new InitializerNode( $5, true ) ) ); }
[7fdb94e1]577 | '(' type_no_function ')' '@' '{' initializer_list_opt comma_opt '}' // CFA, explicit C compound-literal
[f810e09]578 { $$ = new ExpressionNode( build_compoundLiteral( $2, (new InitializerNode( $6, true ))->set_maybeConstructed( false ) ) ); }
[ecb27a7]579 | '^' primary_expression '{' argument_expression_list '}' // CFA
[097e2b0]580 {
[9706554]581 Token fn;
[ecb27a7]582 fn.str = new string( "^?{}" ); // location undefined
583 $$ = new ExpressionNode( build_func( new ExpressionNode( build_varref( fn ) ), (ExpressionNode *)( $2 )->set_last( $4 ) ) );
[097e2b0]584 }
[4d51835]585 ;
[51b73452]586
587argument_expression_list:
[4d51835]588 argument_expression
589 | argument_expression_list ',' argument_expression
[1d4580a]590 { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]591 ;
[51b73452]592
593argument_expression:
[4d51835]594 // empty
[738e304]595 { $$ = nullptr; }
596 // | '@' // use default argument
597 // { $$ = new ExpressionNode( build_constantInteger( *new string( "2" ) ) ); }
[4d51835]598 | assignment_expression
599 ;
[b87a5ed]600
601field_list: // CFA, tuple field selector
[4d51835]602 field
[1d4580a]603 | field_list ',' field { $$ = (ExpressionNode *)$1->set_last( $3 ); }
[4d51835]604 ;
[b87a5ed]605
606field: // CFA, tuple field selector
[faddbd8]607 field_name
[930f69e]608 | FLOATING_DECIMALconstant field
609 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), maybeMoveBuild<Expression>( $2 ) ) ); }
[7fdb94e1]610 | FLOATING_DECIMALconstant '[' field_list ']'
611 { $$ = new ExpressionNode( build_fieldSel( new ExpressionNode( build_field_name_FLOATING_DECIMALconstant( *$1 ) ), build_tuple( $3 ) ) ); }
[faddbd8]612 | field_name '.' field
[bf32bb8]613 { $$ = new ExpressionNode( build_fieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[7fdb94e1]614 | field_name '.' '[' field_list ']'
615 { $$ = new ExpressionNode( build_fieldSel( $1, build_tuple( $4 ) ) ); }
[faddbd8]616 | field_name ARROW field
[bf32bb8]617 { $$ = new ExpressionNode( build_pfieldSel( $1, maybeMoveBuild<Expression>( $3 ) ) ); }
[7fdb94e1]618 | field_name ARROW '[' field_list ']'
619 { $$ = new ExpressionNode( build_pfieldSel( $1, build_tuple( $4 ) ) ); }
[4d51835]620 ;
[51b73452]621
[faddbd8]622field_name:
[df22130]623 INTEGERconstant fraction_constants_opt
[8780e30]624 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_constantInteger( *$1 ), $2 ) ); }
[df22130]625 | FLOATINGconstant fraction_constants_opt
[8780e30]626 { $$ = new ExpressionNode( build_field_name_fraction_constants( build_field_name_FLOATINGconstant( *$1 ), $2 ) ); }
[df22130]627 | no_attr_identifier fraction_constants_opt
[4cb935e]628 {
[84d58c5]629 $$ = new ExpressionNode( build_field_name_fraction_constants( build_varref( $1 ), $2 ) );
630 }
[1b29996]631 ;
632
[df22130]633fraction_constants_opt:
[1b29996]634 // empty
[8780e30]635 { $$ = nullptr; }
[df22130]636 | fraction_constants_opt FLOATING_FRACTIONconstant
[8780e30]637 {
[930f69e]638 Expression * constant = build_field_name_FLOATING_FRACTIONconstant( *$2 );
[8780e30]639 $$ = $1 != nullptr ? new ExpressionNode( build_fieldSel( $1, constant ) ) : new ExpressionNode( constant );
640 }
[faddbd8]641 ;
642
[51b73452]643unary_expression:
[4d51835]644 postfix_expression
[c6b1105]645 // first location where constant/string can have operator applied: sizeof 3/sizeof "abc" still requires
646 // semantics checks, e.g., ++3, 3--, *3, &&3
[51b1202]647 | constant
[ab57786]648 | string_literal
[d1625f8]649 { $$ = new ExpressionNode( $1 ); }
[4d51835]650 | EXTENSION cast_expression // GCC
[e04ef3a]651 { $$ = $2->set_extension( true ); }
[c6b1105]652 // '*' ('&') is separated from unary_operator because of shift/reduce conflict in:
653 // { * X; } // dereference X
654 // { * int X; } // CFA declaration of pointer to int
[51e076e]655 | ptrref_operator cast_expression // CFA
[9706554]656 {
657 switch ( $1 ) {
[d9e2280]658 case OperKinds::AddressOf:
[db70fe4]659 $$ = new ExpressionNode( new AddressExpr( maybeMoveBuild< Expression >( $2 ) ) );
[9706554]660 break;
[d9e2280]661 case OperKinds::PointTo:
[d1625f8]662 $$ = new ExpressionNode( build_unary_val( $1, $2 ) );
[9706554]663 break;
[5809461]664 case OperKinds::And:
[db70fe4]665 $$ = new ExpressionNode( new AddressExpr( new AddressExpr( maybeMoveBuild< Expression >( $2 ) ) ) );
[5809461]666 break;
[9706554]667 default:
668 assert( false );
669 }
670 }
[4d51835]671 | unary_operator cast_expression
[d1625f8]672 { $$ = new ExpressionNode( build_unary_val( $1, $2 ) ); }
[dd51906]673 | ICR unary_expression
[d1625f8]674 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Incr, $2 ) ); }
[dd51906]675 | DECR unary_expression
[d1625f8]676 { $$ = new ExpressionNode( build_unary_ptr( OperKinds::Decr, $2 ) ); }
[4d51835]677 | SIZEOF unary_expression
[db70fe4]678 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuild< Expression >( $2 ) ) ); }
[84d58c5]679 | SIZEOF '(' type_no_function ')'
[db70fe4]680 { $$ = new ExpressionNode( new SizeofExpr( maybeMoveBuildType( $3 ) ) ); }
[d1625f8]681 | ALIGNOF unary_expression // GCC, variable alignment
[db70fe4]682 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuild< Expression >( $2 ) ) ); }
[a2e0687]683 | ALIGNOF '(' type_no_function ')' // GCC, type alignment
[db70fe4]684 { $$ = new ExpressionNode( new AlignofExpr( maybeMoveBuildType( $3 ) ) ); }
[84d58c5]685 | OFFSETOF '(' type_no_function ',' no_attr_identifier ')'
[d1625f8]686 { $$ = new ExpressionNode( build_offsetOf( $3, build_varref( $5 ) ) ); }
[4d51835]687 | ATTR_IDENTIFIER
[db70fe4]688 { $$ = new ExpressionNode( new AttrExpr( build_varref( $1 ), maybeMoveBuild< Expression >( (ExpressionNode *)nullptr ) ) ); }
[4d51835]689 | ATTR_IDENTIFIER '(' argument_expression ')'
[db70fe4]690 { $$ = new ExpressionNode( new AttrExpr( build_varref( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[84d58c5]691 | ATTR_IDENTIFIER '(' type ')'
[db70fe4]692 { $$ = new ExpressionNode( new AttrExpr( build_varref( $1 ), maybeMoveBuildType( $3 ) ) ); }
[4d51835]693 ;
[51b73452]694
[dd51906]695ptrref_operator:
[d9e2280]696 '*' { $$ = OperKinds::PointTo; }
697 | '&' { $$ = OperKinds::AddressOf; }
[c6b1105]698 // GCC, address of label must be handled by semantic check for ref,ref,label
[9f07232]699 | ANDAND { $$ = OperKinds::And; }
[dd51906]700 ;
701
[51b73452]702unary_operator:
[d9e2280]703 '+' { $$ = OperKinds::UnPlus; }
704 | '-' { $$ = OperKinds::UnMinus; }
705 | '!' { $$ = OperKinds::Neg; }
706 | '~' { $$ = OperKinds::BitNeg; }
[4d51835]707 ;
[51b73452]708
709cast_expression:
[4d51835]710 unary_expression
[84d58c5]711 | '(' type_no_function ')' cast_expression
[d1625f8]712 { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[fae90d5f]713 | '(' COROUTINE '&' ')' cast_expression // CFA
[9a705dc8]714 { $$ = new ExpressionNode( build_keyword_cast( KeywordCastExpr::Coroutine, $5 ) ); }
[fae90d5f]715 | '(' THREAD '&' ')' cast_expression // CFA
[9a705dc8]716 { $$ = new ExpressionNode( build_keyword_cast( KeywordCastExpr::Thread, $5 ) ); }
[fae90d5f]717 | '(' MONITOR '&' ')' cast_expression // CFA
[9a705dc8]718 { $$ = new ExpressionNode( build_keyword_cast( KeywordCastExpr::Monitor, $5 ) ); }
[72457b6]719 // VIRTUAL cannot be opt because of look ahead issues
[fae90d5f]720 | '(' VIRTUAL ')' cast_expression // CFA
[513e165]721 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild< Expression >( $4 ), maybeMoveBuildType( nullptr ) ) ); }
[fae90d5f]722 | '(' VIRTUAL type_no_function ')' cast_expression // CFA
[513e165]723 { $$ = new ExpressionNode( new VirtualCastExpr( maybeMoveBuild< Expression >( $5 ), maybeMoveBuildType( $3 ) ) ); }
[84d58c5]724// | '(' type_no_function ')' tuple
[1b29996]725// { $$ = new ExpressionNode( build_cast( $2, $4 ) ); }
[4d51835]726 ;
[51b73452]727
[994d080]728exponential_expression:
[4d51835]729 cast_expression
[994d080]730 | exponential_expression '\\' cast_expression
[e5f2a67]731 { $$ = new ExpressionNode( build_binary_val( OperKinds::Exp, $1, $3 ) ); }
[994d080]732 ;
733
734multiplicative_expression:
735 exponential_expression
736 | multiplicative_expression '*' exponential_expression
[d1625f8]737 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mul, $1, $3 ) ); }
[994d080]738 | multiplicative_expression '/' exponential_expression
[d1625f8]739 { $$ = new ExpressionNode( build_binary_val( OperKinds::Div, $1, $3 ) ); }
[994d080]740 | multiplicative_expression '%' exponential_expression
[d1625f8]741 { $$ = new ExpressionNode( build_binary_val( OperKinds::Mod, $1, $3 ) ); }
[4d51835]742 ;
[51b73452]743
744additive_expression:
[4d51835]745 multiplicative_expression
746 | additive_expression '+' multiplicative_expression
[d1625f8]747 { $$ = new ExpressionNode( build_binary_val( OperKinds::Plus, $1, $3 ) ); }
[4d51835]748 | additive_expression '-' multiplicative_expression
[d1625f8]749 { $$ = new ExpressionNode( build_binary_val( OperKinds::Minus, $1, $3 ) ); }
[4d51835]750 ;
[51b73452]751
752shift_expression:
[4d51835]753 additive_expression
754 | shift_expression LS additive_expression
[d1625f8]755 { $$ = new ExpressionNode( build_binary_val( OperKinds::LShift, $1, $3 ) ); }
[4d51835]756 | shift_expression RS additive_expression
[d1625f8]757 { $$ = new ExpressionNode( build_binary_val( OperKinds::RShift, $1, $3 ) ); }
[4d51835]758 ;
[51b73452]759
760relational_expression:
[4d51835]761 shift_expression
762 | relational_expression '<' shift_expression
[d1625f8]763 { $$ = new ExpressionNode( build_binary_val( OperKinds::LThan, $1, $3 ) ); }
[4d51835]764 | relational_expression '>' shift_expression
[d1625f8]765 { $$ = new ExpressionNode( build_binary_val( OperKinds::GThan, $1, $3 ) ); }
[4d51835]766 | relational_expression LE shift_expression
[d1625f8]767 { $$ = new ExpressionNode( build_binary_val( OperKinds::LEThan, $1, $3 ) ); }
[4d51835]768 | relational_expression GE shift_expression
[d1625f8]769 { $$ = new ExpressionNode( build_binary_val( OperKinds::GEThan, $1, $3 ) ); }
[4d51835]770 ;
[51b73452]771
772equality_expression:
[4d51835]773 relational_expression
774 | equality_expression EQ relational_expression
[d1625f8]775 { $$ = new ExpressionNode( build_binary_val( OperKinds::Eq, $1, $3 ) ); }
[4d51835]776 | equality_expression NE relational_expression
[d1625f8]777 { $$ = new ExpressionNode( build_binary_val( OperKinds::Neq, $1, $3 ) ); }
[4d51835]778 ;
[51b73452]779
780AND_expression:
[4d51835]781 equality_expression
782 | AND_expression '&' equality_expression
[d1625f8]783 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitAnd, $1, $3 ) ); }
[4d51835]784 ;
[51b73452]785
786exclusive_OR_expression:
[4d51835]787 AND_expression
788 | exclusive_OR_expression '^' AND_expression
[d1625f8]789 { $$ = new ExpressionNode( build_binary_val( OperKinds::Xor, $1, $3 ) ); }
[4d51835]790 ;
[51b73452]791
792inclusive_OR_expression:
[4d51835]793 exclusive_OR_expression
794 | inclusive_OR_expression '|' exclusive_OR_expression
[d1625f8]795 { $$ = new ExpressionNode( build_binary_val( OperKinds::BitOr, $1, $3 ) ); }
[4d51835]796 ;
[51b73452]797
798logical_AND_expression:
[4d51835]799 inclusive_OR_expression
800 | logical_AND_expression ANDAND inclusive_OR_expression
[d1625f8]801 { $$ = new ExpressionNode( build_and_or( $1, $3, true ) ); }
[4d51835]802 ;
[51b73452]803
804logical_OR_expression:
[4d51835]805 logical_AND_expression
806 | logical_OR_expression OROR logical_AND_expression
[d1625f8]807 { $$ = new ExpressionNode( build_and_or( $1, $3, false ) ); }
[4d51835]808 ;
[51b73452]809
810conditional_expression:
[4d51835]811 logical_OR_expression
812 | logical_OR_expression '?' comma_expression ':' conditional_expression
[d1625f8]813 { $$ = new ExpressionNode( build_cond( $1, $3, $5 ) ); }
[fae90d5f]814 // FIX ME: computes $1 twice
[4d51835]815 | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
[d1625f8]816 { $$ = new ExpressionNode( build_cond( $1, $1, $4 ) ); }
[4d51835]817 ;
[51b73452]818
819constant_expression:
[4d51835]820 conditional_expression
821 ;
[51b73452]822
823assignment_expression:
[4d51835]824 // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
825 conditional_expression
826 | unary_expression assignment_operator assignment_expression
[cda7889]827 { $$ = new ExpressionNode( build_binary_val( $2, $1, $3 ) ); }
[7fdb94e1]828 | unary_expression '=' '{' initializer_list_opt comma_opt '}'
[fae90d5f]829 { SemanticError( yylloc, "Initializer assignment is currently unimplemented." ); $$ = nullptr; }
[4d51835]830 ;
[51b73452]831
832assignment_expression_opt:
[4d51835]833 // empty
[d1625f8]834 { $$ = nullptr; }
[4d51835]835 | assignment_expression
836 ;
[b87a5ed]837
[9706554]838assignment_operator:
[d9e2280]839 '=' { $$ = OperKinds::Assign; }
[a839867]840 | ATassign { $$ = OperKinds::AtAssn; }
[e5f2a67]841 | EXPassign { $$ = OperKinds::ExpAssn; }
[d9e2280]842 | MULTassign { $$ = OperKinds::MulAssn; }
843 | DIVassign { $$ = OperKinds::DivAssn; }
844 | MODassign { $$ = OperKinds::ModAssn; }
845 | PLUSassign { $$ = OperKinds::PlusAssn; }
846 | MINUSassign { $$ = OperKinds::MinusAssn; }
847 | LSassign { $$ = OperKinds::LSAssn; }
848 | RSassign { $$ = OperKinds::RSAssn; }
849 | ANDassign { $$ = OperKinds::AndAssn; }
850 | ERassign { $$ = OperKinds::ERAssn; }
851 | ORassign { $$ = OperKinds::OrAssn; }
[413ad05]852 ;
[9706554]853
[b87a5ed]854tuple: // CFA, tuple
[de62360d]855 // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce conflict with
[c0aa336]856 // comma_expression in cfa_identifier_parameter_array and cfa_abstract_array
[1b29996]857// '[' ']'
858// { $$ = new ExpressionNode( build_tuple() ); }
[13e8427]859// | '[' push assignment_expression pop ']'
[1b29996]860// { $$ = new ExpressionNode( build_tuple( $3 ) ); }
[17238fd]861 '[' ',' tuple_expression_list ']'
862 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)(new ExpressionNode( nullptr ) )->set_last( $3 ) ) ); }
863 | '[' push assignment_expression pop ',' tuple_expression_list ']'
864 { $$ = new ExpressionNode( build_tuple( (ExpressionNode *)$3->set_last( $6 ) ) ); }
[4d51835]865 ;
[51b73452]866
867tuple_expression_list:
[4d51835]868 assignment_expression_opt
869 | tuple_expression_list ',' assignment_expression_opt
[1d4580a]870 { $$ = (ExpressionNode *)$1->set_last( $3 ); }
[4d51835]871 ;
[51b73452]872
873comma_expression:
[4d51835]874 assignment_expression
[9706554]875 | comma_expression ',' assignment_expression
[513e165]876 { $$ = new ExpressionNode( new CommaExpr( maybeMoveBuild< Expression >( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[4d51835]877 ;
[51b73452]878
879comma_expression_opt:
[4d51835]880 // empty
[58dd019]881 { $$ = nullptr; }
[4d51835]882 | comma_expression
883 ;
[51b73452]884
[c11e31c]885//*************************** STATEMENTS *******************************
[51b73452]886
887statement:
[4d51835]888 labeled_statement
889 | compound_statement
[c0a33d2]890 | expression_statement
[4d51835]891 | selection_statement
892 | iteration_statement
893 | jump_statement
[8b47e50]894 | with_statement
[b6b3c42]895 | mutex_statement
[5b2edbc]896 | waitfor_statement
[4d51835]897 | exception_statement
[2a8427c6]898 | enable_disable_statement
[fae90d5f]899 { SemanticError( yylloc, "enable/disable statement is currently unimplemented." ); $$ = nullptr; }
[4d51835]900 | asm_statement
[61fc4f6]901 | DIRECTIVE
[6d539f83]902 { $$ = new StatementNode( build_directive( $1 ) ); }
[b9be000b]903 ;
[51b73452]904
905labeled_statement:
[44a81853]906 // labels cannot be identifiers 0 or 1 or ATTR_IDENTIFIER
907 identifier_or_type_name ':' attribute_list_opt statement
[1db21619]908 {
[44a81853]909 $$ = $4->add_label( $1, $3 );
[1db21619]910 }
[4d51835]911 ;
[51b73452]912
913compound_statement:
[4d51835]914 '{' '}'
[e82aa9df]915 { $$ = new StatementNode( build_compound( (StatementNode *)0 ) ); }
[35718a9]916 | '{' push
[51b1202]917 local_label_declaration_opt // GCC, local labels
[9bd6105]918 statement_decl_list // C99, intermix declarations and statements
[c0aa336]919 pop '}'
[35718a9]920 { $$ = new StatementNode( build_compound( $4 ) ); }
[4d51835]921 ;
[b87a5ed]922
[9bd6105]923statement_decl_list: // C99
924 statement_decl
[35718a9]925 | statement_decl_list statement_decl
926 { if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } }
[4d51835]927 ;
[51b73452]928
[9bd6105]929statement_decl:
[4d51835]930 declaration // CFA, new & old style declarations
[e82aa9df]931 { $$ = new StatementNode( $1 ); }
[4d51835]932 | EXTENSION declaration // GCC
[c0aa336]933 {
934 distExt( $2 );
[e82aa9df]935 $$ = new StatementNode( $2 );
[8e9cbb2]936 }
[4d51835]937 | function_definition
[e82aa9df]938 { $$ = new StatementNode( $1 ); }
[c0aa336]939 | EXTENSION function_definition // GCC
940 {
941 distExt( $2 );
942 $$ = new StatementNode( $2 );
943 }
[35718a9]944 | statement
[4d51835]945 ;
[51b73452]946
[9bd6105]947statement_list_nodecl:
[4d51835]948 statement
[9bd6105]949 | statement_list_nodecl statement
[1d4580a]950 { if ( $1 != 0 ) { $1->set_last( $2 ); $$ = $1; } }
[4d51835]951 ;
[51b73452]952
953expression_statement:
[4d51835]954 comma_expression_opt ';'
[e82aa9df]955 { $$ = new StatementNode( build_expr( $1 ) ); }
[4d51835]956 ;
[51b73452]957
958selection_statement:
[3d26610]959 // pop causes a S/R conflict without separating the IF statement into a non-terminal even after resolving
960 // the inherent S/R conflict with THEN/ELSE.
961 push if_statement pop
962 { $$ = $2; }
[4cc585b]963 | SWITCH '(' comma_expression ')' case_clause
[6a276a0]964 { $$ = new StatementNode( build_switch( true, $3, $5 ) ); }
[35718a9]965 | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]966 {
[6a276a0]967 StatementNode *sw = new StatementNode( build_switch( true, $3, $8 ) );
[4e06c1e]968 // The semantics of the declaration list is changed to include associated initialization, which is performed
969 // *before* the transfer to the appropriate case clause by hoisting the declarations into a compound
970 // statement around the switch. Statements after the initial declaration list can never be executed, and
[8688ce1]971 // therefore, are removed from the grammar even though C allows it. The change also applies to choose
972 // statement.
[a7741435]973 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]974 }
[4d51835]975 | CHOOSE '(' comma_expression ')' case_clause // CFA
[6a276a0]976 { $$ = new StatementNode( build_switch( false, $3, $5 ) ); }
[35718a9]977 | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt pop '}' // CFA
[4e06c1e]978 {
[6a276a0]979 StatementNode *sw = new StatementNode( build_switch( false, $3, $8 ) );
[a7741435]980 $$ = $7 ? new StatementNode( build_compound( (StatementNode *)((new StatementNode( $7 ))->set_last( sw )) ) ) : sw;
[4e06c1e]981 }
[4d51835]982 ;
[b87a5ed]983
[3d26610]984if_statement:
985 IF '(' if_control_expression ')' statement %prec THEN
986 // explicitly deal with the shift/reduce conflict on if/else
987 { $$ = new StatementNode( build_if( $3, $5, nullptr ) ); }
988 | IF '(' if_control_expression ')' statement ELSE statement
989 { $$ = new StatementNode( build_if( $3, $5, $7 ) ); }
990 ;
991
[936e9f4]992if_control_expression:
[35718a9]993 comma_expression
[936e9f4]994 { $$ = new IfCtl( nullptr, $1 ); }
[35718a9]995 | c_declaration // no semi-colon
[936e9f4]996 { $$ = new IfCtl( $1, nullptr ); }
[35718a9]997 | cfa_declaration // no semi-colon
[936e9f4]998 { $$ = new IfCtl( $1, nullptr ); }
[6d49ea3]999 | declaration comma_expression // semi-colon separated
[936e9f4]1000 { $$ = new IfCtl( $1, $2 ); }
1001 ;
1002
[de62360d]1003// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
1004// clause allows a list of values and subranges.
[b87a5ed]1005
1006case_value: // CFA
[4d51835]1007 constant_expression { $$ = $1; }
1008 | constant_expression ELLIPSIS constant_expression // GCC, subrange
[db70fe4]1009 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[4d51835]1010 | subrange // CFA, subrange
1011 ;
[b87a5ed]1012
1013case_value_list: // CFA
[e82aa9df]1014 case_value { $$ = new StatementNode( build_case( $1 ) ); }
[064e3ff]1015 // convert case list, e.g., "case 1, 3, 5:" into "case 1: case 3: case 5"
[e82aa9df]1016 | case_value_list ',' case_value { $$ = (StatementNode *)($1->set_last( new StatementNode( build_case( $3 ) ) ) ); }
[4d51835]1017 ;
[b87a5ed]1018
1019case_label: // CFA
[8688ce1]1020 CASE case_value_list ':' { $$ = $2; }
[e82aa9df]1021 | DEFAULT ':' { $$ = new StatementNode( build_default() ); }
[4d51835]1022 // A semantic check is required to ensure only one default clause per switch/choose statement.
1023 ;
[b87a5ed]1024
[6a276a0]1025//label_list_opt:
1026// // empty
1027// | identifier_or_type_name ':'
1028// | label_list_opt identifier_or_type_name ':'
1029// ;
1030
[b87a5ed]1031case_label_list: // CFA
[4d51835]1032 case_label
[1d4580a]1033 | case_label_list case_label { $$ = (StatementNode *)( $1->set_last( $2 )); }
[4d51835]1034 ;
[b87a5ed]1035
1036case_clause: // CFA
[e82aa9df]1037 case_label_list statement { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[4d51835]1038 ;
[b87a5ed]1039
1040switch_clause_list_opt: // CFA
[4d51835]1041 // empty
[58dd019]1042 { $$ = nullptr; }
[4d51835]1043 | switch_clause_list
1044 ;
[b87a5ed]1045
1046switch_clause_list: // CFA
[9bd6105]1047 case_label_list statement_list_nodecl
[e82aa9df]1048 { $$ = $1->append_last_case( new StatementNode( build_compound( $2 ) ) ); }
[9bd6105]1049 | switch_clause_list case_label_list statement_list_nodecl
[e82aa9df]1050 { $$ = (StatementNode *)( $1->set_last( $2->append_last_case( new StatementNode( build_compound( $3 ) ) ) ) ); }
[4d51835]1051 ;
[b87a5ed]1052
[51b73452]1053iteration_statement:
[401e61f]1054 WHILE '(' push if_control_expression ')' statement pop
1055 { $$ = new StatementNode( build_while( $4, $6 ) ); }
[4d51835]1056 | DO statement WHILE '(' comma_expression ')' ';'
[401e61f]1057 { $$ = new StatementNode( build_do_while( $5, $2 ) ); }
[35718a9]1058 | FOR '(' push for_control_expression ')' statement pop
[e82aa9df]1059 { $$ = new StatementNode( build_for( $4, $6 ) ); }
[4d51835]1060 ;
[51b73452]1061
1062for_control_expression:
[35718a9]1063 comma_expression_opt ';' comma_expression_opt ';' comma_expression_opt
1064 { $$ = new ForCtl( $1, $3, $5 ); }
[4d51835]1065 | declaration comma_expression_opt ';' comma_expression_opt // C99
[2f22cc4]1066 { $$ = new ForCtl( $1, $2, $4 ); }
[d1625f8]1067 ;
[51b73452]1068
1069jump_statement:
[44a81853]1070 GOTO identifier_or_type_name ';'
[ab57786]1071 { $$ = new StatementNode( build_branch( $2, BranchStmt::Goto ) ); }
[4d51835]1072 | GOTO '*' comma_expression ';' // GCC, computed goto
[4e06c1e]1073 // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; => goto *(i+3);
[de62360d]1074 // whereas normal operator precedence yields goto (*i)+3;
[e82aa9df]1075 { $$ = new StatementNode( build_computedgoto( $3 ) ); }
[6a276a0]1076 // A semantic check is required to ensure fallthru appears only in the body of a choose statement.
1077 | fall_through_name ';' // CFA
1078 { $$ = new StatementNode( build_branch( BranchStmt::FallThrough ) ); }
1079 | fall_through_name identifier_or_type_name ';' // CFA
1080 { $$ = new StatementNode( build_branch( $2, BranchStmt::FallThrough ) ); }
1081 | fall_through_name DEFAULT ';' // CFA
1082 { $$ = new StatementNode( build_branch( BranchStmt::FallThroughDefault ) ); }
[4d51835]1083 | CONTINUE ';'
[de62360d]1084 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1085 { $$ = new StatementNode( build_branch( BranchStmt::Continue ) ); }
[44a81853]1086 | CONTINUE identifier_or_type_name ';' // CFA, multi-level continue
[de62360d]1087 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1088 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1089 { $$ = new StatementNode( build_branch( $2, BranchStmt::Continue ) ); }
[4d51835]1090 | BREAK ';'
[de62360d]1091 // A semantic check is required to ensure this statement appears only in the body of an iteration statement.
[ab57786]1092 { $$ = new StatementNode( build_branch( BranchStmt::Break ) ); }
[44a81853]1093 | BREAK identifier_or_type_name ';' // CFA, multi-level exit
[de62360d]1094 // A semantic check is required to ensure this statement appears only in the body of an iteration statement, and
1095 // the target of the transfer appears only at the start of an iteration statement.
[ab57786]1096 { $$ = new StatementNode( build_branch( $2, BranchStmt::Break ) ); }
[4d51835]1097 | RETURN comma_expression_opt ';'
[e82aa9df]1098 { $$ = new StatementNode( build_return( $2 ) ); }
[7fdb94e1]1099 | RETURN '{' initializer_list_opt comma_opt '}'
[fae90d5f]1100 { SemanticError( yylloc, "Initializer return is currently unimplemented." ); $$ = nullptr; }
[8cc5cb0]1101 | THROW assignment_expression_opt ';' // handles rethrow
[e82aa9df]1102 { $$ = new StatementNode( build_throw( $2 ) ); }
[8cc5cb0]1103 | THROWRESUME assignment_expression_opt ';' // handles reresume
[daf1af8]1104 { $$ = new StatementNode( build_resume( $2 ) ); }
[8cc5cb0]1105 | THROWRESUME assignment_expression_opt AT assignment_expression ';' // handles reresume
[daf1af8]1106 { $$ = new StatementNode( build_resume_at( $2, $4 ) ); }
[4d51835]1107 ;
[51b73452]1108
[6a276a0]1109fall_through_name: // CFA
1110 FALLTHRU
1111 | FALLTHROUGH
1112 ;
1113
[8b47e50]1114with_statement:
[5b2edbc]1115 WITH '(' tuple_expression_list ')' statement
[a378ca7]1116 {
1117 $$ = new StatementNode( build_with( $3, $5 ) );
1118 }
[5b2edbc]1119 ;
1120
[b6b3c42]1121// If MUTEX becomes a general qualifier, there are shift/reduce conflicts, so change syntax to "with mutex".
1122mutex_statement:
1123 MUTEX '(' argument_expression_list ')' statement
[fae90d5f]1124 { SemanticError( yylloc, "Mutex statement is currently unimplemented." ); $$ = nullptr; }
[b6b3c42]1125 ;
1126
[51d6d6a]1127when_clause:
[6a276a0]1128 WHEN '(' comma_expression ')' { $$ = $3; }
[51d6d6a]1129 ;
1130
[5b2edbc]1131when_clause_opt:
1132 // empty
[135b431]1133 { $$ = nullptr; }
[51d6d6a]1134 | when_clause
[5b2edbc]1135 ;
1136
1137waitfor:
1138 WAITFOR '(' identifier ')'
[135b431]1139 {
1140 $$ = new ExpressionNode( new NameExpr( *$3 ) );
1141 delete $3;
1142 }
[5b2edbc]1143 | WAITFOR '(' identifier ',' argument_expression_list ')'
[135b431]1144 {
1145 $$ = new ExpressionNode( new NameExpr( *$3 ) );
1146 $$->set_last( $5 );
1147 delete $3;
1148 }
[5b2edbc]1149 ;
1150
1151timeout:
[6a276a0]1152 TIMEOUT '(' comma_expression ')' { $$ = $3; }
[5b2edbc]1153 ;
1154
1155waitfor_clause:
[51d6d6a]1156 when_clause_opt waitfor statement %prec THEN
[135b431]1157 { $$ = build_waitfor( $2, $3, $1 ); }
[5b2edbc]1158 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1159 { $$ = build_waitfor( $2, $3, $1, $5 ); }
[51d6d6a]1160 | when_clause_opt timeout statement %prec THEN
[135b431]1161 { $$ = build_waitfor_timeout( $2, $3, $1 ); }
[5b2edbc]1162 | when_clause_opt ELSE statement
[135b431]1163 { $$ = build_waitfor_timeout( nullptr, $3, $1 ); }
[51d6d6a]1164 // "else" must be conditional after timeout or timeout is never triggered (i.e., it is meaningless)
1165 | when_clause_opt timeout statement WOR when_clause ELSE statement
[135b431]1166 { $$ = build_waitfor_timeout( $2, $3, $1, $7, $5 ); }
[5b2edbc]1167 ;
1168
1169waitfor_statement:
[51d6d6a]1170 when_clause_opt waitfor statement %prec THEN
[135b431]1171 { $$ = new StatementNode( build_waitfor( $2, $3, $1 ) ); }
[5b2edbc]1172 | when_clause_opt waitfor statement WOR waitfor_clause
[135b431]1173 { $$ = new StatementNode( build_waitfor( $2, $3, $1, $5 ) ); }
[8b47e50]1174 ;
1175
[51b73452]1176exception_statement:
[cfaabe2c]1177 TRY compound_statement handler_clause
[e82aa9df]1178 { $$ = new StatementNode( build_try( $2, $3, 0 ) ); }
[4d51835]1179 | TRY compound_statement finally_clause
[e82aa9df]1180 { $$ = new StatementNode( build_try( $2, 0, $3 ) ); }
[cfaabe2c]1181 | TRY compound_statement handler_clause finally_clause
[e82aa9df]1182 { $$ = new StatementNode( build_try( $2, $3, $4 ) ); }
[4d51835]1183 ;
[51b73452]1184
1185handler_clause:
[3d26610]1186 handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement pop
1187 { $$ = new StatementNode( build_catch( $1, $4, $6, $8 ) ); }
1188 | handler_clause handler_key '(' push exception_declaration pop handler_predicate_opt ')' compound_statement pop
1189 { $$ = (StatementNode *)$1->set_last( new StatementNode( build_catch( $2, $5, $7, $9 ) ) ); }
[994d080]1190 ;
1191
1192handler_predicate_opt:
[7fdb94e1]1193 // empty
[cbce272]1194 { $$ = nullptr; }
[6a276a0]1195 | ';' conditional_expression { $$ = $2; }
[307a732]1196 ;
1197
1198handler_key:
[6a276a0]1199 CATCH { $$ = CatchStmt::Terminate; }
1200 | CATCHRESUME { $$ = CatchStmt::Resume; }
[4d51835]1201 ;
[51b73452]1202
1203finally_clause:
[6a276a0]1204 FINALLY compound_statement { $$ = new StatementNode( build_finally( $2 ) ); }
[4d51835]1205 ;
[51b73452]1206
1207exception_declaration:
[d0ffed1]1208 // No SUE declaration in parameter list.
1209 type_specifier_nobody
1210 | type_specifier_nobody declarator
[c0a33d2]1211 { $$ = $2->addType( $1 ); }
[d0ffed1]1212 | type_specifier_nobody variable_abstract_declarator
[4d51835]1213 { $$ = $2->addType( $1 ); }
[c0aa336]1214 | cfa_abstract_declarator_tuple no_attr_identifier // CFA
[c0a33d2]1215 { $$ = $1->addName( $2 ); }
[c0aa336]1216 | cfa_abstract_declarator_tuple // CFA
[4d51835]1217 ;
[51b73452]1218
[2a8427c6]1219enable_disable_statement:
1220 enable_disable_key identifier_list compound_statement
1221 ;
1222
1223enable_disable_key:
1224 ENABLE
1225 | DISABLE
1226 ;
1227
[51b73452]1228asm_statement:
[ab57786]1229 ASM asm_volatile_opt '(' string_literal ')' ';'
[6d539f83]1230 { $$ = new StatementNode( build_asm( $2, $4, 0 ) ); }
[ab57786]1231 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ')' ';' // remaining GCC
[6d539f83]1232 { $$ = new StatementNode( build_asm( $2, $4, $6 ) ); }
[ab57786]1233 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ')' ';'
[6d539f83]1234 { $$ = new StatementNode( build_asm( $2, $4, $6, $8 ) ); }
[ab57786]1235 | ASM asm_volatile_opt '(' string_literal ':' asm_operands_opt ':' asm_operands_opt ':' asm_clobbers_list_opt ')' ';'
[6d539f83]1236 { $$ = new StatementNode( build_asm( $2, $4, $6, $8, $10 ) ); }
[ab57786]1237 | ASM asm_volatile_opt GOTO '(' string_literal ':' ':' asm_operands_opt ':' asm_clobbers_list_opt ':' label_list ')' ';'
[6d539f83]1238 { $$ = new StatementNode( build_asm( $2, $5, 0, $8, $10, $12 ) ); }
[7f5566b]1239 ;
1240
1241asm_volatile_opt: // GCC
1242 // empty
1243 { $$ = false; }
1244 | VOLATILE
1245 { $$ = true; }
[4d51835]1246 ;
[b87a5ed]1247
1248asm_operands_opt: // GCC
[4d51835]1249 // empty
[58dd019]1250 { $$ = nullptr; } // use default argument
[4d51835]1251 | asm_operands_list
1252 ;
[b87a5ed]1253
1254asm_operands_list: // GCC
[4d51835]1255 asm_operand
1256 | asm_operands_list ',' asm_operand
[1d4580a]1257 { $$ = (ExpressionNode *)$1->set_last( $3 ); }
[4d51835]1258 ;
[b87a5ed]1259
1260asm_operand: // GCC
[ab57786]1261 string_literal '(' constant_expression ')'
[513e165]1262 { $$ = new ExpressionNode( new AsmExpr( maybeMoveBuild< Expression >( (ExpressionNode *)nullptr ), $1, maybeMoveBuild< Expression >( $3 ) ) ); }
[ab57786]1263 | '[' constant_expression ']' string_literal '(' constant_expression ')'
[513e165]1264 { $$ = new ExpressionNode( new AsmExpr( maybeMoveBuild< Expression >( $2 ), $4, maybeMoveBuild< Expression >( $6 ) ) ); }
[7f5566b]1265 ;
1266
[4e06c1e]1267asm_clobbers_list_opt: // GCC
[7f5566b]1268 // empty
[58dd019]1269 { $$ = nullptr; } // use default argument
[ab57786]1270 | string_literal
[d1625f8]1271 { $$ = new ExpressionNode( $1 ); }
[ab57786]1272 | asm_clobbers_list_opt ',' string_literal
[513e165]1273 // set_last returns ParseNode *
[e82aa9df]1274 { $$ = (ExpressionNode *)$1->set_last( new ExpressionNode( $3 ) ); }
[4d51835]1275 ;
[b87a5ed]1276
[7f5566b]1277label_list:
1278 no_attr_identifier
[ab57786]1279 {
1280 $$ = new LabelNode(); $$->labels.push_back( *$1 );
1281 delete $1; // allocated by lexer
1282 }
[7f5566b]1283 | label_list ',' no_attr_identifier
[ab57786]1284 {
1285 $$ = $1; $1->labels.push_back( *$3 );
1286 delete $3; // allocated by lexer
1287 }
[4d51835]1288 ;
[51b73452]1289
[c11e31c]1290//******************************* DECLARATIONS *********************************
[51b73452]1291
[b87a5ed]1292declaration_list_opt: // used at beginning of switch statement
[35718a9]1293 // empty
[58dd019]1294 { $$ = nullptr; }
[4d51835]1295 | declaration_list
1296 ;
[51b73452]1297
1298declaration_list:
[4d51835]1299 declaration
[35718a9]1300 | declaration_list declaration
1301 { $$ = $1->appendList( $2 ); }
[4d51835]1302 ;
[51b73452]1303
[407bde5]1304KR_parameter_list_opt: // used to declare parameter types in K&R style functions
[4cc585b]1305 // empty
[58dd019]1306 { $$ = nullptr; }
[35718a9]1307 | KR_parameter_list
[4d51835]1308 ;
[51b73452]1309
[35718a9]1310KR_parameter_list:
[4cc585b]1311 push c_declaration pop ';'
1312 { $$ = $2; }
[35718a9]1313 | KR_parameter_list push c_declaration pop ';'
[4d51835]1314 { $$ = $1->appendList( $3 ); }
1315 ;
[b87a5ed]1316
[51b1202]1317local_label_declaration_opt: // GCC, local label
[4d51835]1318 // empty
[51b1202]1319 | local_label_declaration_list
[4d51835]1320 ;
[b87a5ed]1321
[51b1202]1322local_label_declaration_list: // GCC, local label
1323 LABEL local_label_list ';'
1324 | local_label_declaration_list LABEL local_label_list ';'
[4d51835]1325 ;
[b87a5ed]1326
[51b1202]1327local_label_list: // GCC, local label
[c0a33d2]1328 no_attr_identifier_or_type_name
1329 | local_label_list ',' no_attr_identifier_or_type_name
[4d51835]1330 ;
[b87a5ed]1331
[936e9f4]1332declaration: // old & new style declarations
[35718a9]1333 c_declaration ';'
1334 | cfa_declaration ';' // CFA
[b47b827]1335 | static_assert // C11
[4d51835]1336 ;
[b87a5ed]1337
[b9be000b]1338static_assert:
1339 STATICASSERT '(' constant_expression ',' string_literal ')' ';' // C11
[f6e3e34]1340 { $$ = DeclarationNode::newStaticAssert( $3, $5 ); }
[b47b827]1341 | STATICASSERT '(' constant_expression ')' ';' // CFA
[6e3eaa57]1342 { $$ = DeclarationNode::newStaticAssert( $3, build_constantStr( *new string( "\"\"" ) ) ); }
[b9be000b]1343
[de62360d]1344// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
1345// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
1346// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
1347// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
1348// the declaration list (as in Pascal). ANSI C and the new CFA declarations may appear together in the same program
1349// block, but cannot be mixed within a specific declaration.
[c11e31c]1350//
[b87a5ed]1351// CFA C
1352// [10] int x; int x[10]; // array of 10 integers
1353// [10] * char y; char *y[10]; // array of 10 pointers to char
1354
[c0aa336]1355cfa_declaration: // CFA
[4cc585b]1356 cfa_variable_declaration
1357 | cfa_typedef_declaration
1358 | cfa_function_declaration
1359 | type_declaring_list
1360 | trait_specifier
[4d51835]1361 ;
[b87a5ed]1362
[c0aa336]1363cfa_variable_declaration: // CFA
1364 cfa_variable_specifier initializer_opt
[7fdb94e1]1365 { $$ = $1->addInitializer( $2 ); }
[c0aa336]1366 | declaration_qualifier_list cfa_variable_specifier initializer_opt
[de62360d]1367 // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to preclude
1368 // them as a type_qualifier cannot appear in that context.
[7fdb94e1]1369 { $$ = $2->addQualifiers( $1 )->addInitializer( $3 ); }
[c0aa336]1370 | cfa_variable_declaration pop ',' push identifier_or_type_name initializer_opt
[7fdb94e1]1371 { $$ = $1->appendList( $1->cloneType( $5 )->addInitializer( $6 ) ); }
[4d51835]1372 ;
[b87a5ed]1373
[c0aa336]1374cfa_variable_specifier: // CFA
[de62360d]1375 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1376 // storage-class
[c0aa336]1377 cfa_abstract_declarator_no_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1378 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1379 | cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1380 { $$ = $1->addName( $2 )->addAsmName( $3 ); }
[c0aa336]1381 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name asm_name_opt
[7fdb94e1]1382 { $$ = $2->addQualifiers( $1 )->addName( $3 )->addAsmName( $4 ); }
[4d51835]1383 ;
[b87a5ed]1384
[c0aa336]1385cfa_function_declaration: // CFA
1386 cfa_function_specifier
1387 | type_qualifier_list cfa_function_specifier
[7fdb94e1]1388 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1389 | declaration_qualifier_list cfa_function_specifier
[7fdb94e1]1390 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]1391 | declaration_qualifier_list type_qualifier_list cfa_function_specifier
[7fdb94e1]1392 { $$ = $3->addQualifiers( $1 )->addQualifiers( $2 ); }
[40de461]1393 | cfa_function_declaration ',' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[4d51835]1394 {
[481115f]1395 // Append the return type at the start (left-hand-side) to each identifier in the list.
1396 DeclarationNode * ret = new DeclarationNode;
1397 ret->type = maybeClone( $1->type->base );
[40de461]1398 $$ = $1->appendList( DeclarationNode::newFunction( $3, ret, $6, nullptr ) );
[4d51835]1399 }
1400 ;
[b87a5ed]1401
[c0aa336]1402cfa_function_specifier: // CFA
[40de461]1403// '[' ']' identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')' // S/R conflict
[1b29996]1404// {
1405// $$ = DeclarationNode::newFunction( $3, DeclarationNode::newTuple( 0 ), $6, 0, true );
1406// }
[40de461]1407// '[' ']' identifier '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1408// {
1409// typedefTable.setNextIdentifier( *$5 );
1410// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1411// }
[40de461]1412// | '[' ']' TYPEDEFname '(' push cfa_parameter_ellipsis_list_opt pop ')'
[2871210]1413// {
1414// typedefTable.setNextIdentifier( *$5 );
1415// $$ = DeclarationNode::newFunction( $5, DeclarationNode::newTuple( 0 ), $8, 0, true );
1416// }
1417// | '[' ']' typegen_name
1418 // identifier_or_type_name must be broken apart because of the sequence:
[4d51835]1419 //
[40de461]1420 // '[' ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[4d51835]1421 // '[' ']' type_specifier
1422 //
[2871210]1423 // type_specifier can resolve to just TYPEDEFname (e.g., typedef int T; int f( T );). Therefore this must be
1424 // flattened to allow lookahead to the '(' without having to reduce identifier_or_type_name.
[40de461]1425 cfa_abstract_tuple identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0aa336]1426 // To obtain LR(1 ), this rule must be factored out from function return type (see cfa_abstract_declarator).
[c0a33d2]1427 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 ); }
[40de461]1428 | cfa_function_return identifier_or_type_name '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]1429 { $$ = DeclarationNode::newFunction( $2, $1, $5, 0 ); }
[4d51835]1430 ;
[b87a5ed]1431
[c0aa336]1432cfa_function_return: // CFA
[c0a33d2]1433 '[' push cfa_parameter_list pop ']'
1434 { $$ = DeclarationNode::newTuple( $3 ); }
1435 | '[' push cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ']'
[b048dc3]1436 // To obtain LR(1 ), the last cfa_abstract_parameter_list is added into this flattened rule to lookahead to the ']'.
[c0a33d2]1437 { $$ = DeclarationNode::newTuple( $3->appendList( $7 ) ); }
[4d51835]1438 ;
[b87a5ed]1439
[c0aa336]1440cfa_typedef_declaration: // CFA
1441 TYPEDEF cfa_variable_specifier
[4d51835]1442 {
[ecae5860]1443 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "1" );
[4d51835]1444 $$ = $2->addTypedef();
1445 }
[c0aa336]1446 | TYPEDEF cfa_function_specifier
[4d51835]1447 {
[ecae5860]1448 typedefTable.addToEnclosingScope( *$2->name, TYPEDEFname, "2" );
[4d51835]1449 $$ = $2->addTypedef();
1450 }
[c0aa336]1451 | cfa_typedef_declaration pop ',' push no_attr_identifier
[4d51835]1452 {
[ecae5860]1453 typedefTable.addToEnclosingScope( *$5, TYPEDEFname, "3" );
[4d51835]1454 $$ = $1->appendList( $1->cloneType( $5 ) );
1455 }
1456 ;
[b87a5ed]1457
[de62360d]1458// Traditionally typedef is part of storage-class specifier for syntactic convenience only. Here, it is factored out as
1459// a separate form of declaration, which syntactically precludes storage-class specifiers and initialization.
[51b73452]1460
1461typedef_declaration:
[4d51835]1462 TYPEDEF type_specifier declarator
1463 {
[ecae5860]1464 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "4" );
[4d51835]1465 $$ = $3->addType( $2 )->addTypedef();
1466 }
1467 | typedef_declaration pop ',' push declarator
1468 {
[ecae5860]1469 typedefTable.addToEnclosingScope( *$5->name, TYPEDEFname, "5" );
[4d51835]1470 $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
1471 }
[de62360d]1472 | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2 )
[4d51835]1473 {
[ecae5860]1474 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "6" );
[4d51835]1475 $$ = $4->addType( $3 )->addQualifiers( $1 )->addTypedef();
1476 }
1477 | type_specifier TYPEDEF declarator
1478 {
[ecae5860]1479 typedefTable.addToEnclosingScope( *$3->name, TYPEDEFname, "7" );
[4d51835]1480 $$ = $3->addType( $1 )->addTypedef();
1481 }
1482 | type_specifier TYPEDEF type_qualifier_list declarator
1483 {
[ecae5860]1484 typedefTable.addToEnclosingScope( *$4->name, TYPEDEFname, "8" );
[de62360d]1485 $$ = $4->addQualifiers( $1 )->addTypedef()->addType( $1 );
[4d51835]1486 }
1487 ;
[b87a5ed]1488
[721f17a]1489typedef_expression:
1490 // GCC, naming expression type: typedef name = exp; gives a name to the type of an expression
[4d51835]1491 TYPEDEF no_attr_identifier '=' assignment_expression
1492 {
[7fdb94e1]1493 // $$ = DeclarationNode::newName( 0 ); // unimplemented
1494 SemanticError( yylloc, "Typedef expression is currently unimplemented." ); $$ = nullptr;
[4d51835]1495 }
1496 | typedef_expression pop ',' push no_attr_identifier '=' assignment_expression
1497 {
[7fdb94e1]1498 // $$ = DeclarationNode::newName( 0 ); // unimplemented
1499 SemanticError( yylloc, "Typedef expression is currently unimplemented." ); $$ = nullptr;
[4d51835]1500 }
1501 ;
[51b73452]1502
[c0aa336]1503//c_declaration:
1504// declaring_list pop ';'
1505// | typedef_declaration pop ';'
1506// | typedef_expression pop ';' // GCC, naming expression type
1507// | sue_declaration_specifier pop ';'
1508// ;
1509//
1510//declaring_list:
1511// // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1512// // storage-class
1513// declarator asm_name_opt initializer_opt
1514// {
[2f0a0678]1515// typedefTable.addToEnclosingScope( IDENTIFIER );
[c0aa336]1516// $$ = ( $2->addType( $1 ))->addAsmName( $3 )->addInitializer( $4 );
1517// }
1518// | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
1519// {
[2f0a0678]1520// typedefTable.addToEnclosingScope( IDENTIFIER );
[c0aa336]1521// $$ = $1->appendList( $1->cloneBaseType( $4->addAsmName( $5 )->addInitializer( $6 ) ) );
1522// }
1523// ;
1524
1525c_declaration:
[4cc585b]1526 declaration_specifier declaring_list
[7fdb94e1]1527 { $$ = distAttr( $1, $2 ); }
[4cc585b]1528 | typedef_declaration
1529 | typedef_expression // GCC, naming expression type
1530 | sue_declaration_specifier
[4d51835]1531 ;
[51b73452]1532
1533declaring_list:
[de62360d]1534 // A semantic check is required to ensure asm_name only appears on declarations with implicit or explicit static
1535 // storage-class
[c0aa336]1536 declarator asm_name_opt initializer_opt
[7fdb94e1]1537 { $$ = $1->addAsmName( $2 )->addInitializer( $3 ); }
[4d51835]1538 | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
[7fdb94e1]1539 { $$ = $1->appendList( $4->addQualifiers( $3 )->addAsmName( $5 )->addInitializer( $6 ) ); }
[4d51835]1540 ;
[b87a5ed]1541
1542declaration_specifier: // type specifier + storage class
[4d51835]1543 basic_declaration_specifier
1544 | sue_declaration_specifier
[84d58c5]1545 | type_declaration_specifier
[4d51835]1546 ;
[b87a5ed]1547
[d0ffed1]1548declaration_specifier_nobody: // type specifier + storage class - {...}
1549 // Preclude SUE declarations in restricted scopes:
1550 //
1551 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1552 //
1553 // because it is impossible to call f due to name equivalence.
1554 basic_declaration_specifier
1555 | sue_declaration_specifier_nobody
[84d58c5]1556 | type_declaration_specifier
[d0ffed1]1557 ;
1558
1559type_specifier: // type specifier
[4d51835]1560 basic_type_specifier
1561 | sue_type_specifier
[84d58c5]1562 | type_type_specifier
[4d51835]1563 ;
[b87a5ed]1564
[d0ffed1]1565type_specifier_nobody: // type specifier - {...}
1566 // Preclude SUE declarations in restricted scopes:
1567 //
1568 // int f( struct S { int i; } s1, Struct S s2 ) { struct S s3; ... }
1569 //
1570 // because it is impossible to call f due to name equivalence.
1571 basic_type_specifier
1572 | sue_type_specifier_nobody
[84d58c5]1573 | type_type_specifier
[d0ffed1]1574 ;
1575
[b87a5ed]1576type_qualifier_list_opt: // GCC, used in asm_statement
[4d51835]1577 // empty
[58dd019]1578 { $$ = nullptr; }
[4d51835]1579 | type_qualifier_list
1580 ;
[51b73452]1581
1582type_qualifier_list:
[de62360d]1583 // A semantic check is necessary to ensure a type qualifier is appropriate for the kind of declaration.
[4d51835]1584 //
[de62360d]1585 // ISO/IEC 9899:1999 Section 6.7.3(4 ) : If the same qualifier appears more than once in the same
1586 // specifier-qualifier-list, either directly or via one or more typedefs, the behavior is the same as if it
1587 // appeared only once.
[4d51835]1588 type_qualifier
1589 | type_qualifier_list type_qualifier
1590 { $$ = $1->addQualifiers( $2 ); }
1591 ;
[51b73452]1592
1593type_qualifier:
[4d51835]1594 type_qualifier_name
1595 | attribute
1596 ;
[51b73452]1597
1598type_qualifier_name:
[4d51835]1599 CONST
[738e304]1600 { $$ = DeclarationNode::newTypeQualifier( Type::Const ); }
[4d51835]1601 | RESTRICT
[738e304]1602 { $$ = DeclarationNode::newTypeQualifier( Type::Restrict ); }
[4d51835]1603 | VOLATILE
[738e304]1604 { $$ = DeclarationNode::newTypeQualifier( Type::Volatile ); }
[4d51835]1605 | ATOMIC
[738e304]1606 { $$ = DeclarationNode::newTypeQualifier( Type::Atomic ); }
[a16a7ec]1607 | forall
1608 ;
1609
1610forall:
[35718a9]1611 FORALL '(' type_parameter_list ')' // CFA
1612 { $$ = DeclarationNode::newForall( $3 ); }
[4d51835]1613 ;
[51b73452]1614
1615declaration_qualifier_list:
[4d51835]1616 storage_class_list
[de62360d]1617 | type_qualifier_list storage_class_list // remaining OBSOLESCENT (see 2 )
[4d51835]1618 { $$ = $1->addQualifiers( $2 ); }
1619 | declaration_qualifier_list type_qualifier_list storage_class_list
1620 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1621 ;
[51b73452]1622
1623storage_class_list:
[de62360d]1624 // A semantic check is necessary to ensure a storage class is appropriate for the kind of declaration and that
1625 // only one of each is specified, except for inline, which can appear with the others.
[4d51835]1626 //
[de62360d]1627 // ISO/IEC 9899:1999 Section 6.7.1(2) : At most, one storage-class specifier may be given in the declaration
1628 // specifiers in a declaration.
[4d51835]1629 storage_class
1630 | storage_class_list storage_class
1631 { $$ = $1->addQualifiers( $2 ); }
1632 ;
[51b73452]1633
1634storage_class:
[4d51835]1635 EXTERN
[68fe077a]1636 { $$ = DeclarationNode::newStorageClass( Type::Extern ); }
[4d51835]1637 | STATIC
[68fe077a]1638 { $$ = DeclarationNode::newStorageClass( Type::Static ); }
[4d51835]1639 | AUTO
[68fe077a]1640 { $$ = DeclarationNode::newStorageClass( Type::Auto ); }
[4d51835]1641 | REGISTER
[68fe077a]1642 { $$ = DeclarationNode::newStorageClass( Type::Register ); }
[dd020c0]1643 | THREADLOCAL // C11
[68fe077a]1644 { $$ = DeclarationNode::newStorageClass( Type::Threadlocal ); }
[dd020c0]1645 // Put function specifiers here to simplify parsing rules, but separate them semantically.
[4d51835]1646 | INLINE // C99
[ddfd945]1647 { $$ = DeclarationNode::newFuncSpecifier( Type::Inline ); }
[4d51835]1648 | FORTRAN // C99
[ddfd945]1649 { $$ = DeclarationNode::newFuncSpecifier( Type::Fortran ); }
[68cd1ce]1650 | NORETURN // C11
[ddfd945]1651 { $$ = DeclarationNode::newFuncSpecifier( Type::Noreturn ); }
[4d51835]1652 ;
[51b73452]1653
1654basic_type_name:
[201aeb9]1655 VOID
[4d51835]1656 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1657 | BOOL // C99
1658 { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
[201aeb9]1659 | CHAR
1660 { $$ = DeclarationNode::newBasicType( DeclarationNode::Char ); }
1661 | INT
1662 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int ); }
1663 | INT128
1664 { $$ = DeclarationNode::newBasicType( DeclarationNode::Int128 ); }
1665 | FLOAT
1666 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float ); }
1667 | FLOAT80
1668 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float80 ); }
1669 | FLOAT128
1670 { $$ = DeclarationNode::newBasicType( DeclarationNode::Float128 ); }
1671 | DOUBLE
1672 { $$ = DeclarationNode::newBasicType( DeclarationNode::Double ); }
[4d51835]1673 | COMPLEX // C99
[5b639ee]1674 { $$ = DeclarationNode::newComplexType( DeclarationNode::Complex ); }
[4d51835]1675 | IMAGINARY // C99
[5b639ee]1676 { $$ = DeclarationNode::newComplexType( DeclarationNode::Imaginary ); }
[201aeb9]1677 | SIGNED
1678 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Signed ); }
1679 | UNSIGNED
1680 { $$ = DeclarationNode::newSignedNess( DeclarationNode::Unsigned ); }
1681 | SHORT
1682 { $$ = DeclarationNode::newLength( DeclarationNode::Short ); }
1683 | LONG
1684 { $$ = DeclarationNode::newLength( DeclarationNode::Long ); }
[72457b6]1685 | VALIST // GCC, __builtin_va_list
1686 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Valist ); }
[4d51835]1687 ;
[51b73452]1688
1689basic_declaration_specifier:
[4d51835]1690 // A semantic check is necessary for conflicting storage classes.
1691 basic_type_specifier
1692 | declaration_qualifier_list basic_type_specifier
1693 { $$ = $2->addQualifiers( $1 ); }
1694 | basic_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1695 { $$ = $1->addQualifiers( $2 ); }
1696 | basic_declaration_specifier storage_class type_qualifier_list
1697 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1698 | basic_declaration_specifier storage_class basic_type_specifier
1699 { $$ = $3->addQualifiers( $2 )->addType( $1 ); }
1700 ;
[51b73452]1701
1702basic_type_specifier:
[84d58c5]1703 direct_type
[f38e7d7]1704 // Cannot have type modifiers, e.g., short, long, etc.
[84d58c5]1705 | type_qualifier_list_opt indirect_type type_qualifier_list_opt
[4d51835]1706 { $$ = $2->addQualifiers( $1 )->addQualifiers( $3 ); }
1707 ;
[51b73452]1708
[84d58c5]1709direct_type:
[4d51835]1710 basic_type_name
1711 | type_qualifier_list basic_type_name
1712 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1713 | direct_type type_qualifier
[4d51835]1714 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1715 | direct_type basic_type_name
[4d51835]1716 { $$ = $1->addType( $2 ); }
1717 ;
[51b73452]1718
[84d58c5]1719indirect_type:
1720 TYPEOF '(' type ')' // GCC: typeof(x) y;
[4d51835]1721 { $$ = $3; }
1722 | TYPEOF '(' comma_expression ')' // GCC: typeof(a+b) y;
1723 { $$ = DeclarationNode::newTypeof( $3 ); }
[84d58c5]1724 | ATTR_TYPEGENname '(' type ')' // CFA: e.g., @type(x) y;
[4d51835]1725 { $$ = DeclarationNode::newAttr( $1, $3 ); }
1726 | ATTR_TYPEGENname '(' comma_expression ')' // CFA: e.g., @type(a+b) y;
1727 { $$ = DeclarationNode::newAttr( $1, $3 ); }
[f38e7d7]1728 | ZERO_T // CFA
1729 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::Zero ); }
1730 | ONE_T // CFA
1731 { $$ = DeclarationNode::newBuiltinType( DeclarationNode::One ); }
[4d51835]1732 ;
[51b73452]1733
[d0ffed1]1734sue_declaration_specifier: // struct, union, enum + storage class + type specifier
[4d51835]1735 sue_type_specifier
1736 | declaration_qualifier_list sue_type_specifier
1737 { $$ = $2->addQualifiers( $1 ); }
1738 | sue_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
1739 { $$ = $1->addQualifiers( $2 ); }
1740 | sue_declaration_specifier storage_class type_qualifier_list
1741 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1742 ;
[51b73452]1743
[d0ffed1]1744sue_type_specifier: // struct, union, enum + type specifier
1745 elaborated_type
[fdca7c6]1746 | type_qualifier_list
1747 { if ( $1->type != nullptr && $1->type->forall ) forall = true; } // remember generic type
1748 elaborated_type
1749 { $$ = $3->addQualifiers( $1 ); }
[4d51835]1750 | sue_type_specifier type_qualifier
1751 { $$ = $1->addQualifiers( $2 ); }
1752 ;
[51b73452]1753
[d0ffed1]1754sue_declaration_specifier_nobody: // struct, union, enum - {...} + storage class + type specifier
1755 sue_type_specifier_nobody
1756 | declaration_qualifier_list sue_type_specifier_nobody
1757 { $$ = $2->addQualifiers( $1 ); }
1758 | sue_declaration_specifier_nobody storage_class // remaining OBSOLESCENT (see 2)
1759 { $$ = $1->addQualifiers( $2 ); }
1760 | sue_declaration_specifier_nobody storage_class type_qualifier_list
1761 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1762 ;
1763
1764sue_type_specifier_nobody: // struct, union, enum - {...} + type specifier
1765 elaborated_type_nobody
1766 | type_qualifier_list elaborated_type_nobody
1767 { $$ = $2->addQualifiers( $1 ); }
1768 | sue_type_specifier_nobody type_qualifier
1769 { $$ = $1->addQualifiers( $2 ); }
1770 ;
1771
[84d58c5]1772type_declaration_specifier:
1773 type_type_specifier
1774 | declaration_qualifier_list type_type_specifier
[4d51835]1775 { $$ = $2->addQualifiers( $1 ); }
[84d58c5]1776 | type_declaration_specifier storage_class // remaining OBSOLESCENT (see 2)
[4d51835]1777 { $$ = $1->addQualifiers( $2 ); }
[84d58c5]1778 | type_declaration_specifier storage_class type_qualifier_list
[4d51835]1779 { $$ = $1->addQualifiers( $2 )->addQualifiers( $3 ); }
1780 ;
[b87a5ed]1781
[84d58c5]1782type_type_specifier: // typedef types
1783 type_name
1784 | type_qualifier_list type_name
1785 { $$ = $2->addQualifiers( $1 ); }
1786 | type_type_specifier type_qualifier
1787 { $$ = $1->addQualifiers( $2 ); }
1788 ;
1789
1790type_name:
[4d51835]1791 TYPEDEFname
1792 { $$ = DeclarationNode::newFromTypedef( $1 ); }
[84d58c5]1793 | '.' TYPEDEFname
[407bde5]1794 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[84d58c5]1795 | type_name '.' TYPEDEFname
[407bde5]1796 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[84d58c5]1797 | typegen_name
1798 | '.' typegen_name
[407bde5]1799 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[84d58c5]1800 | type_name '.' typegen_name
[407bde5]1801 { SemanticError( yylloc, "Qualified name is currently unimplemented." ); $$ = nullptr; }
[84d58c5]1802 ;
1803
1804typegen_name: // CFA
[65d6de4]1805 TYPEGENname
1806 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1807 | TYPEGENname '(' ')'
[67cf18c]1808 { $$ = DeclarationNode::newFromTypeGen( $1, nullptr ); }
1809 | TYPEGENname '(' type_list ')'
[84d58c5]1810 { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
[4d51835]1811 ;
[51b73452]1812
[d0ffed1]1813elaborated_type: // struct, union, enum
[c0aa336]1814 aggregate_type
1815 | enum_type
[4d51835]1816 ;
[51b73452]1817
[d0ffed1]1818elaborated_type_nobody: // struct, union, enum - {...}
1819 aggregate_type_nobody
1820 | enum_type_nobody
1821 ;
1822
[3d56d15b]1823fred:
1824 // empty
1825 { yyy = false; }
1826 ;
1827
[d0ffed1]1828aggregate_type: // struct, union
[7fdb94e1]1829 aggregate_key attribute_list_opt '{' field_declaration_list_opt '}'
[6f95000]1830 { $$ = DeclarationNode::newAggregate( $1, new string( DeclarationNode::anonymous.newName() ), nullptr, $4, true )->addQualifiers( $2 ); }
[3d56d15b]1831 | aggregate_key attribute_list_opt no_attr_identifier fred
[fdca7c6]1832 {
[a1c9ddd]1833 typedefTable.makeTypedef( *$3, forall ? TYPEGENname : TYPEDEFname ); // create typedef
[fdca7c6]1834 forall = false; // reset
1835 }
[7fdb94e1]1836 '{' field_declaration_list_opt '}'
[3d56d15b]1837 { $$ = DeclarationNode::newAggregate( $1, $3, nullptr, $7, true )->addQualifiers( $2 ); }
1838 | aggregate_key attribute_list_opt type_name fred
[407bde5]1839 {
[a1c9ddd]1840 typedefTable.makeTypedef( *$3->type->symbolic.name, forall ? TYPEGENname : TYPEDEFname ); // create typedef
[407bde5]1841 forall = false; // reset
1842 }
1843 '{' field_declaration_list_opt '}'
[3d56d15b]1844 { $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, nullptr, $7, true )->addQualifiers( $2 ); }
[7fdb94e1]1845 | aggregate_key attribute_list_opt '(' type_list ')' '{' field_declaration_list_opt '}' // CFA
[6f95000]1846 { $$ = DeclarationNode::newAggregate( $1, new string( DeclarationNode::anonymous.newName() ), $4, $7, false )->addQualifiers( $2 ); }
[d0ffed1]1847 | aggregate_type_nobody
1848 ;
1849
1850aggregate_type_nobody: // struct, union - {...}
[3d56d15b]1851 aggregate_key attribute_list_opt no_attr_identifier fred
[84d58c5]1852 {
[a1c9ddd]1853 typedefTable.makeTypedef( *$3, forall ? TYPEGENname : TYPEDEFname );
[9997fee]1854 forall = false; // reset
[84d58c5]1855 $$ = DeclarationNode::newAggregate( $1, $3, nullptr, nullptr, false )->addQualifiers( $2 );
1856 }
[3d56d15b]1857 | aggregate_key attribute_list_opt type_name fred
[65d6de4]1858 {
1859 // Create new generic declaration with same name as previous forward declaration, where the IDENTIFIER is
1860 // switched to a TYPEGENname. Link any generic arguments from typegen_name to new generic declaration and
1861 // delete newFromTypeGen.
1862 $$ = DeclarationNode::newAggregate( $1, $3->type->symbolic.name, $3->type->symbolic.actuals, nullptr, false )->addQualifiers( $2 );
1863 $3->type->symbolic.name = nullptr;
1864 $3->type->symbolic.actuals = nullptr;
1865 delete $3;
1866 }
[4d51835]1867 ;
[51b73452]1868
1869aggregate_key:
[c0aa336]1870 STRUCT
[3d56d15b]1871 { yyy = true; $$ = DeclarationNode::Struct; }
[c0aa336]1872 | UNION
[3d56d15b]1873 { yyy = true; $$ = DeclarationNode::Union; }
[c27fb59]1874 | EXCEPTION
[3d56d15b]1875 { yyy = true; $$ = DeclarationNode::Exception; }
[d3bc0ad]1876 | COROUTINE
[3d56d15b]1877 { yyy = true; $$ = DeclarationNode::Coroutine; }
[d3bc0ad]1878 | MONITOR
[3d56d15b]1879 { yyy = true; $$ = DeclarationNode::Monitor; }
[d3bc0ad]1880 | THREAD
[3d56d15b]1881 { yyy = true; $$ = DeclarationNode::Thread; }
[4d51835]1882 ;
[51b73452]1883
[7fdb94e1]1884field_declaration_list_opt:
[5d125e4]1885 // empty
[58dd019]1886 { $$ = nullptr; }
[7fdb94e1]1887 | field_declaration_list_opt field_declaration
[a7741435]1888 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]1889 ;
[51b73452]1890
1891field_declaration:
[46fa473]1892 type_specifier field_declaring_list ';'
1893 { $$ = distAttr( $1, $2 ); }
[c0aa336]1894 | EXTENSION type_specifier field_declaring_list ';' // GCC
[46fa473]1895 { distExt( $3 ); $$ = distAttr( $2, $3 ); } // mark all fields in list
1896 | typedef_declaration ';' // CFA
1897 { SemanticError( yylloc, "Typedef in aggregate is currently unimplemented." ); $$ = nullptr; }
1898 | cfa_field_declaring_list ';' // CFA, new style field declaration
1899 | EXTENSION cfa_field_declaring_list ';' // GCC
1900 { distExt( $2 ); $$ = $2; } // mark all fields in list
1901 | cfa_typedef_declaration ';' // CFA
1902 { SemanticError( yylloc, "Typedef in aggregate is currently unimplemented." ); $$ = nullptr; }
[b47b827]1903 | static_assert // C11
[4d51835]1904 ;
[b87a5ed]1905
[c0aa336]1906cfa_field_declaring_list: // CFA, new style field declaration
1907 cfa_abstract_declarator_tuple // CFA, no field name
1908 | cfa_abstract_declarator_tuple no_attr_identifier_or_type_name
[4d51835]1909 { $$ = $1->addName( $2 ); }
[c0aa336]1910 | cfa_field_declaring_list ',' no_attr_identifier_or_type_name
[4d51835]1911 { $$ = $1->appendList( $1->cloneType( $3 ) ); }
[c0aa336]1912 | cfa_field_declaring_list ',' // CFA, no field name
[4d51835]1913 { $$ = $1->appendList( $1->cloneType( 0 ) ); }
1914 ;
[51b73452]1915
1916field_declaring_list:
[7fdb94e1]1917 field_declarator_opt
1918 | field_declaring_list ',' attribute_list_opt field_declarator_opt
[c0aa336]1919 { $$ = $1->appendList( $4->addQualifiers( $3 ) ); }
[4d51835]1920 ;
[51b73452]1921
[7fdb94e1]1922field_declarator_opt:
[4d51835]1923 // empty
1924 { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name
[6f95000]1925 // '@'
1926 // { $$ = DeclarationNode::newName( new string( DeclarationNode::anonymous.newName() ) ); } // CFA, no field name
[4d51835]1927 | bit_subrange_size // no field name
1928 { $$ = DeclarationNode::newBitfield( $1 ); }
1929 | variable_declarator bit_subrange_size_opt
1930 // A semantic check is required to ensure bit_subrange only appears on base type int.
1931 { $$ = $1->addBitfield( $2 ); }
[c6b1105]1932 | variable_type_redeclarator bit_subrange_size_opt
[4d51835]1933 // A semantic check is required to ensure bit_subrange only appears on base type int.
1934 { $$ = $1->addBitfield( $2 ); }
1935 | variable_abstract_declarator // CFA, no field name
1936 ;
[51b73452]1937
1938bit_subrange_size_opt:
[4d51835]1939 // empty
[58dd019]1940 { $$ = nullptr; }
[4d51835]1941 | bit_subrange_size
1942 ;
[51b73452]1943
1944bit_subrange_size:
[4d51835]1945 ':' constant_expression
1946 { $$ = $2; }
1947 ;
[51b73452]1948
[d0ffed1]1949enum_type: // enum
[c0aa336]1950 ENUM attribute_list_opt '{' enumerator_list comma_opt '}'
[6f95000]1951 { $$ = DeclarationNode::newEnum( new string( DeclarationNode::anonymous.newName() ), $4, true )->addQualifiers( $2 ); }
[407bde5]1952 | ENUM attribute_list_opt no_attr_identifier
[d0ffed1]1953 { typedefTable.makeTypedef( *$3 ); }
1954 '{' enumerator_list comma_opt '}'
1955 { $$ = DeclarationNode::newEnum( $3, $6, true )->addQualifiers( $2 ); }
[407bde5]1956 | ENUM attribute_list_opt type_name
1957 '{' enumerator_list comma_opt '}'
1958 { $$ = DeclarationNode::newEnum( $3->type->symbolic.name, $5, true )->addQualifiers( $2 ); }
[d0ffed1]1959 | enum_type_nobody
1960 ;
1961
1962enum_type_nobody: // enum - {...}
[407bde5]1963 ENUM attribute_list_opt no_attr_identifier
[45161b4d]1964 {
[c0aa336]1965 typedefTable.makeTypedef( *$3 );
[ca1a547]1966 $$ = DeclarationNode::newEnum( $3, 0, false )->addQualifiers( $2 );
[45161b4d]1967 }
[407bde5]1968 | ENUM attribute_list_opt type_name
1969 {
1970 typedefTable.makeTypedef( *$3->type->symbolic.name );
1971 $$ = DeclarationNode::newEnum( $3->type->symbolic.name, 0, false )->addQualifiers( $2 );
1972 }
[4d51835]1973 ;
[51b73452]1974
1975enumerator_list:
[2871210]1976 no_attr_identifier_or_type_name enumerator_value_opt
[4d51835]1977 { $$ = DeclarationNode::newEnumConstant( $1, $2 ); }
[2871210]1978 | enumerator_list ',' no_attr_identifier_or_type_name enumerator_value_opt
[4d51835]1979 { $$ = $1->appendList( DeclarationNode::newEnumConstant( $3, $4 ) ); }
1980 ;
[51b73452]1981
1982enumerator_value_opt:
[4d51835]1983 // empty
[58dd019]1984 { $$ = nullptr; }
[4d51835]1985 | '=' constant_expression
1986 { $$ = $2; }
1987 ;
[51b73452]1988
[40de461]1989cfa_parameter_ellipsis_list_opt: // CFA, abstract + real
[4d51835]1990 // empty
[2a8427c6]1991 { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
1992 | ELLIPSIS
[58dd019]1993 { $$ = nullptr; }
[2a8427c6]1994 | cfa_abstract_parameter_list
[c0aa336]1995 | cfa_parameter_list
[c0a33d2]1996 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list
1997 { $$ = $1->appendList( $5 ); }
1998 | cfa_abstract_parameter_list pop ',' push ELLIPSIS
[4d51835]1999 { $$ = $1->addVarArgs(); }
[c0a33d2]2000 | cfa_parameter_list pop ',' push ELLIPSIS
[4d51835]2001 { $$ = $1->addVarArgs(); }
2002 ;
[b87a5ed]2003
[c0aa336]2004cfa_parameter_list: // CFA
2005 // To obtain LR(1) between cfa_parameter_list and cfa_abstract_tuple, the last cfa_abstract_parameter_list is
2006 // factored out from cfa_parameter_list, flattening the rules to get lookahead to the ']'.
2007 cfa_parameter_declaration
[c0a33d2]2008 | cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2009 { $$ = $1->appendList( $5 ); }
2010 | cfa_parameter_list pop ',' push cfa_parameter_declaration
2011 { $$ = $1->appendList( $5 ); }
2012 | cfa_parameter_list pop ',' push cfa_abstract_parameter_list pop ',' push cfa_parameter_declaration
2013 { $$ = $1->appendList( $5 )->appendList( $9 ); }
[4d51835]2014 ;
[b87a5ed]2015
[c0aa336]2016cfa_abstract_parameter_list: // CFA, new & old style abstract
2017 cfa_abstract_parameter_declaration
[c0a33d2]2018 | cfa_abstract_parameter_list pop ',' push cfa_abstract_parameter_declaration
2019 { $$ = $1->appendList( $5 ); }
[4d51835]2020 ;
[51b73452]2021
2022parameter_type_list_opt:
[4d51835]2023 // empty
[58dd019]2024 { $$ = nullptr; }
[2a8427c6]2025 | ELLIPSIS
2026 { $$ = nullptr; }
2027 | parameter_list
[4d51835]2028 | parameter_list pop ',' push ELLIPSIS
2029 { $$ = $1->addVarArgs(); }
2030 ;
[b87a5ed]2031
2032parameter_list: // abstract + real
[4d51835]2033 abstract_parameter_declaration
2034 | parameter_declaration
2035 | parameter_list pop ',' push abstract_parameter_declaration
2036 { $$ = $1->appendList( $5 ); }
2037 | parameter_list pop ',' push parameter_declaration
2038 { $$ = $1->appendList( $5 ); }
2039 ;
[51b73452]2040
[de62360d]2041// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different semantics
[2871210]2042// for typedef name by using type_parameter_redeclarator instead of typedef_redeclarator, and function prototypes.
[51b73452]2043
[c0aa336]2044cfa_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2045 parameter_declaration
[994d080]2046 | cfa_identifier_parameter_declarator_no_tuple identifier_or_type_name default_initialize_opt
[4d51835]2047 { $$ = $1->addName( $2 ); }
[994d080]2048 | cfa_abstract_tuple identifier_or_type_name default_initialize_opt
[c0aa336]2049 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
[4d51835]2050 { $$ = $1->addName( $2 ); }
[994d080]2051 | type_qualifier_list cfa_abstract_tuple identifier_or_type_name default_initialize_opt
[4d51835]2052 { $$ = $2->addName( $3 )->addQualifiers( $1 ); }
[c0aa336]2053 | cfa_function_specifier
[4d51835]2054 ;
[b87a5ed]2055
[c0aa336]2056cfa_abstract_parameter_declaration: // CFA, new & old style parameter declaration
[4d51835]2057 abstract_parameter_declaration
[c0aa336]2058 | cfa_identifier_parameter_declarator_no_tuple
2059 | cfa_abstract_tuple
2060 // To obtain LR(1), these rules must be duplicated here (see cfa_abstract_declarator).
2061 | type_qualifier_list cfa_abstract_tuple
[4d51835]2062 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]2063 | cfa_abstract_function
[4d51835]2064 ;
[51b73452]2065
2066parameter_declaration:
[d0ffed1]2067 // No SUE declaration in parameter list.
[994d080]2068 declaration_specifier_nobody identifier_parameter_declarator default_initialize_opt
[7fdb94e1]2069 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[994d080]2070 | declaration_specifier_nobody type_parameter_redeclarator default_initialize_opt
[7fdb94e1]2071 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2072 ;
[51b73452]2073
2074abstract_parameter_declaration:
[994d080]2075 declaration_specifier_nobody default_initialize_opt
[e7cc8cb]2076 { $$ = $1->addInitializer( $2 ? new InitializerNode( $2 ) : nullptr ); }
[994d080]2077 | declaration_specifier_nobody abstract_parameter_declarator default_initialize_opt
[e7cc8cb]2078 { $$ = $2->addType( $1 )->addInitializer( $3 ? new InitializerNode( $3 ) : nullptr ); }
[4d51835]2079 ;
[51b73452]2080
[c11e31c]2081// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
[de62360d]2082// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is based only on
2083// identifiers. The ANSI-style parameter-list can redefine a typedef name.
[51b73452]2084
[b87a5ed]2085identifier_list: // K&R-style parameter list => no types
[4d51835]2086 no_attr_identifier
2087 { $$ = DeclarationNode::newName( $1 ); }
2088 | identifier_list ',' no_attr_identifier
2089 { $$ = $1->appendList( DeclarationNode::newName( $3 ) ); }
2090 ;
[51b73452]2091
[2871210]2092identifier_or_type_name:
[4d51835]2093 identifier
2094 | TYPEDEFname
2095 | TYPEGENname
2096 ;
[51b73452]2097
[2871210]2098no_attr_identifier_or_type_name:
[4d51835]2099 no_attr_identifier
2100 | TYPEDEFname
[721f17a]2101 | TYPEGENname
[4d51835]2102 ;
[b87a5ed]2103
[84d58c5]2104type_no_function: // sizeof, alignof, cast (constructor)
[c0aa336]2105 cfa_abstract_declarator_tuple // CFA
[4d51835]2106 | type_specifier
[c0aa336]2107 | type_specifier abstract_declarator
[4d51835]2108 { $$ = $2->addType( $1 ); }
2109 ;
[b87a5ed]2110
[84d58c5]2111type: // typeof, assertion
2112 type_no_function
[c0aa336]2113 | cfa_abstract_function // CFA
[4d51835]2114 ;
[51b73452]2115
2116initializer_opt:
[4d51835]2117 // empty
[58dd019]2118 { $$ = nullptr; }
[2871210]2119 | '=' initializer
2120 { $$ = $2; }
[641c3d0]2121 | '=' VOID
[3ed994e]2122 { $$ = new InitializerNode( true ); }
[097e2b0]2123 | ATassign initializer
[974906e2]2124 { $$ = $2->set_maybeConstructed( false ); }
[4d51835]2125 ;
[51b73452]2126
2127initializer:
[de62360d]2128 assignment_expression { $$ = new InitializerNode( $1 ); }
[7fdb94e1]2129 | '{' initializer_list_opt comma_opt '}' { $$ = new InitializerNode( $2, true ); }
[4d51835]2130 ;
[51b73452]2131
[7fdb94e1]2132initializer_list_opt:
[097e2b0]2133 // empty
[58dd019]2134 { $$ = nullptr; }
[097e2b0]2135 | initializer
[4d51835]2136 | designation initializer { $$ = $2->set_designators( $1 ); }
[7fdb94e1]2137 | initializer_list_opt ',' initializer { $$ = (InitializerNode *)( $1->set_last( $3 ) ); }
2138 | initializer_list_opt ',' designation initializer
[1d4580a]2139 { $$ = (InitializerNode *)( $1->set_last( $4->set_designators( $3 ) ) ); }
[4d51835]2140 ;
[b87a5ed]2141
[de62360d]2142// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem is use of
2143// '=' to separator the designator from the initializer value, as in:
[c11e31c]2144//
[b87a5ed]2145// int x[10] = { [1] = 3 };
[c11e31c]2146//
[de62360d]2147// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment. To disambiguate this case, CFA
2148// changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC does uses ":" for
2149// field selection. The optional use of the "=" in GCC, or in this case ":", cannot be supported either due to
2150// shift/reduce conflicts
[51b73452]2151
2152designation:
[4d51835]2153 designator_list ':' // C99, CFA uses ":" instead of "="
[84d58c5]2154 | no_attr_identifier ':' // GCC, field name
[d1625f8]2155 { $$ = new ExpressionNode( build_varref( $1 ) ); }
[4d51835]2156 ;
[51b73452]2157
[b87a5ed]2158designator_list: // C99
[4d51835]2159 designator
[2871210]2160 | designator_list designator
[1d4580a]2161 { $$ = (ExpressionNode *)( $1->set_last( $2 ) ); }
[d1625f8]2162 //| designator_list designator { $$ = new ExpressionNode( $1, $2 ); }
[4d51835]2163 ;
[51b73452]2164
2165designator:
[84d58c5]2166 '.' no_attr_identifier // C99, field name
[d1625f8]2167 { $$ = new ExpressionNode( build_varref( $2 ) ); }
[c0a33d2]2168 | '[' push assignment_expression pop ']' // C99, single array element
[de62360d]2169 // assignment_expression used instead of constant_expression because of shift/reduce conflicts with tuple.
[d1625f8]2170 { $$ = $3; }
[c0a33d2]2171 | '[' push subrange pop ']' // CFA, multiple array elements
2172 { $$ = $3; }
2173 | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
2174 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $3 ), maybeMoveBuild< Expression >( $5 ) ) ); }
2175 | '.' '[' push field_list pop ']' // CFA, tuple field selector
2176 { $$ = $4; }
[4d51835]2177 ;
[51b73452]2178
[de62360d]2179// The CFA type system is based on parametric polymorphism, the ability to declare functions with type parameters,
2180// rather than an object-oriented type system. This required four groups of extensions:
[c11e31c]2181//
2182// Overloading: function, data, and operator identifiers may be overloaded.
2183//
[de62360d]2184// Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used for object
2185// and incomplete types, and "ftype" is used for function types. Type declarations with initializers provide
2186// definitions of new types. Type declarations with storage class "extern" provide opaque types.
[c11e31c]2187//
[de62360d]2188// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at the call
2189// site. A polymorphic function is not a template; it is a function, with an address and a type.
[c11e31c]2190//
2191// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
[de62360d]2192// types. They serve many of the purposes of abstract classes, and specification hierarchies resemble subclass
2193// hierarchies. Unlike classes, they can define relationships between types. Assertions declare that a type or
2194// types provide the operations declared by a specification. Assertions are normally used to declare requirements
2195// on type arguments of polymorphic functions.
[c11e31c]2196
[b87a5ed]2197type_parameter_list: // CFA
[67cf18c]2198 type_parameter
2199 | type_parameter_list ',' type_parameter
[4d51835]2200 { $$ = $1->appendList( $3 ); }
2201 ;
[b87a5ed]2202
[84d58c5]2203type_initializer_opt: // CFA
2204 // empty
2205 { $$ = nullptr; }
2206 | '=' type
2207 { $$ = $2; }
2208 ;
2209
[b87a5ed]2210type_parameter: // CFA
[2871210]2211 type_class no_attr_identifier_or_type_name
[ecae5860]2212 { typedefTable.addToScope( *$2, TYPEDEFname, "9" ); }
[67cf18c]2213 type_initializer_opt assertion_list_opt
2214 { $$ = DeclarationNode::newTypeParam( $1, $2 )->addTypeInitializer( $4 )->addAssertions( $5 ); }
[4d51835]2215 | type_specifier identifier_parameter_declarator
[9997fee]2216 | assertion_list
2217 { $$ = DeclarationNode::newTypeParam( DeclarationNode::Dtype, new string( DeclarationNode::anonymous.newName() ) )->addAssertions( $1 ); }
[4d51835]2218 ;
[b87a5ed]2219
2220type_class: // CFA
[4040425]2221 OTYPE
[5b639ee]2222 { $$ = DeclarationNode::Otype; }
[4d51835]2223 | DTYPE
2224 { $$ = DeclarationNode::Dtype; }
[8f60f0b]2225 | FTYPE
2226 { $$ = DeclarationNode::Ftype; }
2227 | TTYPE
2228 { $$ = DeclarationNode::Ttype; }
[4d51835]2229 ;
[b87a5ed]2230
2231assertion_list_opt: // CFA
[4d51835]2232 // empty
[58dd019]2233 { $$ = nullptr; }
[9997fee]2234 | assertion_list
2235 ;
2236
2237assertion_list: // CFA
2238 assertion
2239 | assertion_list assertion
[a7741435]2240 { $$ = $1 ? $1->appendList( $2 ) : $2; }
[4d51835]2241 ;
[b87a5ed]2242
2243assertion: // CFA
[84d58c5]2244 '|' no_attr_identifier_or_type_name '(' type_list ')'
[7fdb94e1]2245 { $$ = DeclarationNode::newTraitUse( $2, $4 ); }
[13e8427]2246 | '|' '{' push trait_declaration_list pop '}'
[4d51835]2247 { $$ = $4; }
[35718a9]2248 // | '|' '(' push type_parameter_list pop ')' '{' push trait_declaration_list pop '}' '(' type_list ')'
2249 // { SemanticError( yylloc, "Generic data-type assertion is currently unimplemented." ); $$ = nullptr; }
[4d51835]2250 ;
[b87a5ed]2251
[84d58c5]2252type_list: // CFA
2253 type
[513e165]2254 { $$ = new ExpressionNode( new TypeExpr( maybeMoveBuildType( $1 ) ) ); }
[4d51835]2255 | assignment_expression
[84d58c5]2256 | type_list ',' type
[513e165]2257 { $$ = (ExpressionNode *)( $1->set_last( new ExpressionNode( new TypeExpr( maybeMoveBuildType( $3 ) ) ) ) ); }
[84d58c5]2258 | type_list ',' assignment_expression
[1d4580a]2259 { $$ = (ExpressionNode *)( $1->set_last( $3 )); }
[4d51835]2260 ;
[b87a5ed]2261
2262type_declaring_list: // CFA
[4040425]2263 OTYPE type_declarator
[4d51835]2264 { $$ = $2; }
[4040425]2265 | storage_class_list OTYPE type_declarator
[4d51835]2266 { $$ = $3->addQualifiers( $1 ); }
2267 | type_declaring_list ',' type_declarator
[a7c90d4]2268 { $$ = $1->appendList( $3->copySpecifiers( $1 ) ); }
[4d51835]2269 ;
[b87a5ed]2270
2271type_declarator: // CFA
[4d51835]2272 type_declarator_name assertion_list_opt
2273 { $$ = $1->addAssertions( $2 ); }
[84d58c5]2274 | type_declarator_name assertion_list_opt '=' type
[4d51835]2275 { $$ = $1->addAssertions( $2 )->addType( $4 ); }
2276 ;
[b87a5ed]2277
2278type_declarator_name: // CFA
[2871210]2279 no_attr_identifier_or_type_name
[4d51835]2280 {
[ecae5860]2281 typedefTable.addToEnclosingScope( *$1, TYPEDEFname, "10" );
[4d51835]2282 $$ = DeclarationNode::newTypeDecl( $1, 0 );
2283 }
[35718a9]2284 | no_attr_identifier_or_type_name '(' type_parameter_list ')'
[4d51835]2285 {
[ecae5860]2286 typedefTable.addToEnclosingScope( *$1, TYPEGENname, "11" );
[35718a9]2287 $$ = DeclarationNode::newTypeDecl( $1, $3 );
[4d51835]2288 }
2289 ;
[b87a5ed]2290
[4040425]2291trait_specifier: // CFA
[35718a9]2292 TRAIT no_attr_identifier_or_type_name '(' type_parameter_list ')' '{' '}'
2293 { $$ = DeclarationNode::newTrait( $2, $4, 0 ); }
2294 | TRAIT no_attr_identifier_or_type_name '(' type_parameter_list ')' '{' push trait_declaration_list pop '}'
2295 { $$ = DeclarationNode::newTrait( $2, $4, $8 ); }
[4d51835]2296 ;
[b87a5ed]2297
[84d58c5]2298trait_declaration_list: // CFA
[4040425]2299 trait_declaration
[13e8427]2300 | trait_declaration_list pop push trait_declaration
2301 { $$ = $1->appendList( $4 ); }
[4d51835]2302 ;
[b87a5ed]2303
[84d58c5]2304trait_declaration: // CFA
[13e8427]2305 cfa_trait_declaring_list ';'
2306 | trait_declaring_list ';'
[4d51835]2307 ;
[b87a5ed]2308
[c0aa336]2309cfa_trait_declaring_list: // CFA
2310 cfa_variable_specifier
2311 | cfa_function_specifier
2312 | cfa_trait_declaring_list pop ',' push identifier_or_type_name
[7fdb94e1]2313 { $$ = $1->appendList( $1->cloneType( $5 ) ); }
[4d51835]2314 ;
[b87a5ed]2315
[4040425]2316trait_declaring_list: // CFA
[4d51835]2317 type_specifier declarator
[7fdb94e1]2318 { $$ = $2->addType( $1 ); }
[4040425]2319 | trait_declaring_list pop ',' push declarator
[7fdb94e1]2320 { $$ = $1->appendList( $1->cloneBaseType( $5 ) ); }
[4d51835]2321 ;
[51b73452]2322
[c11e31c]2323//***************************** EXTERNAL DEFINITIONS *****************************
[51b73452]2324
2325translation_unit:
[3d56d15b]2326 // empty, input file
[4d51835]2327 | external_definition_list
[a7741435]2328 { parseTree = parseTree ? parseTree->appendList( $1 ) : $1; }
[4d51835]2329 ;
[51b73452]2330
2331external_definition_list:
[35718a9]2332 push external_definition pop
2333 { $$ = $2; }
[df22130]2334 | external_definition_list
2335 { forall = xxx; }
[35718a9]2336 push external_definition pop
[9997fee]2337 { $$ = $1 ? $1->appendList( $4 ) : $4; }
[4d51835]2338 ;
[51b73452]2339
2340external_definition_list_opt:
[4d51835]2341 // empty
[58dd019]2342 { $$ = nullptr; }
[3d56d15b]2343 | external_definition_list
2344 ;
2345
2346up:
2347 { typedefTable.up(); }
2348 ;
2349
2350down:
2351 { typedefTable.down(); }
[4d51835]2352 ;
[51b73452]2353
2354external_definition:
[4d51835]2355 declaration
2356 | external_function_definition
[ecae5860]2357 | EXTENSION external_definition // GCC, multiple __extension__ allowed, meaning unknown
2358 {
2359 distExt( $2 ); // mark all fields in list
2360 $$ = $2;
2361 }
[e994912]2362 | ASM '(' string_literal ')' ';' // GCC, global assembler statement
2363 {
[6d539f83]2364 $$ = DeclarationNode::newAsmStmt( new StatementNode( build_asm( false, $3, 0 ) ) );
[e994912]2365 }
[c0aa336]2366 | EXTERN STRINGliteral // C++-style linkage specifier
[4d51835]2367 {
[3b8e52c]2368 linkageStack.push( linkage ); // handle nested extern "C"/"Cforall"
[d55d7a6]2369 linkage = LinkageSpec::linkageUpdate( yylloc, linkage, $2 );
[4d51835]2370 }
[3d56d15b]2371 '{' up external_definition_list_opt down '}'
[4d51835]2372 {
2373 linkage = linkageStack.top();
2374 linkageStack.pop();
[3d56d15b]2375 $$ = $6;
[8e9cbb2]2376 }
[9997fee]2377 | type_qualifier_list
2378 {
[3d56d15b]2379 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
2380 if ( $1->type->forall ) xxx = forall = true; // remember generic type
2381 }
2382 '{' up external_definition_list_opt down '}' // CFA, namespace
2383 {
2384 for ( DeclarationNode * iter = $5; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[1dbc8590]2385 if ( isMangled( iter->linkage ) ) { // ignore extern "C"
2386 iter->addQualifiers( $1->clone() );
2387 } // if
[9997fee]2388 } // for
2389 xxx = false;
2390 delete $1;
[3d56d15b]2391 $$ = $5;
[9997fee]2392 }
2393 | declaration_qualifier_list
2394 {
[3d56d15b]2395 if ( $1->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
2396 if ( $1->type->forall ) xxx = forall = true; // remember generic type
2397 }
2398 '{' up external_definition_list_opt down '}' // CFA, namespace
2399 {
2400 for ( DeclarationNode * iter = $5; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[1dbc8590]2401 if ( isMangled( iter->linkage ) ) { // ignore extern "C"
2402 iter->addQualifiers( $1->clone() );
2403 } // if
[9997fee]2404 } // for
2405 xxx = false;
2406 delete $1;
[3d56d15b]2407 $$ = $5;
[9997fee]2408 }
2409 | declaration_qualifier_list type_qualifier_list
2410 {
[3d56d15b]2411 if ( ($1->type && $1->type->qualifiers.val) || $2->type->qualifiers.val ) { SemanticError( yylloc, "CV qualifiers cannot be distributed; only storage-class and forall qualifiers." ); }
2412 if ( ($1->type && $1->type->forall) || $2->type->forall ) xxx = forall = true; // remember generic type
[9997fee]2413 }
[3d56d15b]2414 '{' up external_definition_list_opt down '}' // CFA, namespace
[9997fee]2415 {
[3d56d15b]2416 for ( DeclarationNode * iter = $6; iter != nullptr; iter = (DeclarationNode *)iter->get_next() ) {
[1dbc8590]2417 if ( isMangled( iter->linkage ) && isMangled( $2->linkage ) ) { // ignore extern "C"
2418 iter->addQualifiers( $1->clone() );
2419 iter->addQualifiers( $2->clone() );
2420 } // if
[9997fee]2421 } // for
2422 xxx = false;
2423 delete $1;
2424 delete $2;
[3d56d15b]2425 $$ = $6;
[9997fee]2426 }
[4d51835]2427 ;
2428
2429external_function_definition:
2430 function_definition
[de62360d]2431 // These rules are a concession to the "implicit int" type_specifier because there is a significant amount of
[c6b1105]2432 // legacy code with global functions missing the type-specifier for the return type, and assuming "int".
2433 // Parsing is possible because function_definition does not appear in the context of an expression (nested
2434 // functions preclude this concession, i.e., all nested function must have a return type). A function prototype
2435 // declaration must still have a type_specifier. OBSOLESCENT (see 1)
[4d51835]2436 | function_declarator compound_statement
[c0a33d2]2437 { $$ = $1->addFunctionBody( $2 ); }
[35718a9]2438 | KR_function_declarator KR_parameter_list_opt compound_statement
[c0a33d2]2439 { $$ = $1->addOldDeclList( $2 )->addFunctionBody( $3 ); }
[4d51835]2440 ;
[51b73452]2441
[8b47e50]2442with_clause_opt:
2443 // empty
[9997fee]2444 { $$ = nullptr; forall = false; }
[578e6037]2445 | WITH '(' tuple_expression_list ')'
[9997fee]2446 { $$ = $3; forall = false; }
[8b47e50]2447 ;
2448
[51b73452]2449function_definition:
[8b47e50]2450 cfa_function_declaration with_clause_opt compound_statement // CFA
[4d51835]2451 {
[481115f]2452 // Add the function body to the last identifier in the function definition list, i.e., foo3:
2453 // [const double] foo1(), foo2( int ), foo3( double ) { return 3.0; }
[5fcba14]2454 $1->get_last()->addFunctionBody( $3, $2 );
[481115f]2455 $$ = $1;
[4d51835]2456 }
[8b47e50]2457 | declaration_specifier function_declarator with_clause_opt compound_statement
[4d51835]2458 {
[c38ae92]2459 rebindForall( $1, $2 );
[7fdb94e1]2460 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
2461 }
2462 | declaration_specifier variable_type_redeclarator with_clause_opt compound_statement
2463 {
2464 rebindForall( $1, $2 );
[5fcba14]2465 $$ = $2->addFunctionBody( $4, $3 )->addType( $1 );
[4d51835]2466 }
[a16a7ec]2467 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2468 | type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2469 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2470 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2471 | declaration_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2472 { $$ = $2->addFunctionBody( $4, $3 )->addQualifiers( $1 ); }
[a16a7ec]2473 // handles default int return type, OBSOLESCENT (see 1)
[8b47e50]2474 | declaration_qualifier_list type_qualifier_list function_declarator with_clause_opt compound_statement
[c0a33d2]2475 { $$ = $3->addFunctionBody( $5, $4 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2476
2477 // Old-style K&R function definition, OBSOLESCENT (see 4)
[35718a9]2478 | declaration_specifier KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[4d51835]2479 {
[c38ae92]2480 rebindForall( $1, $2 );
[5fcba14]2481 $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addType( $1 );
[4d51835]2482 }
[a16a7ec]2483 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2484 | type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2485 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2486 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2487 | declaration_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2488 { $$ = $2->addOldDeclList( $3 )->addFunctionBody( $5, $4 )->addQualifiers( $1 ); }
[a16a7ec]2489 // handles default int return type, OBSOLESCENT (see 1)
[35718a9]2490 | declaration_qualifier_list type_qualifier_list KR_function_declarator KR_parameter_list_opt with_clause_opt compound_statement
[c0a33d2]2491 { $$ = $3->addOldDeclList( $4 )->addFunctionBody( $6, $5 )->addQualifiers( $2 )->addQualifiers( $1 ); }
[4d51835]2492 ;
[51b73452]2493
2494declarator:
[4d51835]2495 variable_declarator
[c6b1105]2496 | variable_type_redeclarator
[4d51835]2497 | function_declarator
2498 ;
[51b73452]2499
2500subrange:
[4d51835]2501 constant_expression '~' constant_expression // CFA, integer subrange
[db70fe4]2502 { $$ = new ExpressionNode( new RangeExpr( maybeMoveBuild< Expression >( $1 ), maybeMoveBuild< Expression >( $3 ) ) ); }
[4d51835]2503 ;
[b87a5ed]2504
2505asm_name_opt: // GCC
[4d51835]2506 // empty
[58dd019]2507 { $$ = nullptr; }
2508 | ASM '(' string_literal ')' attribute_list_opt
[c0aa336]2509 {
2510 DeclarationNode * name = new DeclarationNode();
2511 name->asmName = $3;
2512 $$ = name->addQualifiers( $5 );
2513 }
[4d51835]2514 ;
[b87a5ed]2515
2516attribute_list_opt: // GCC
[4d51835]2517 // empty
[58dd019]2518 { $$ = nullptr; }
[4d51835]2519 | attribute_list
2520 ;
[b87a5ed]2521
2522attribute_list: // GCC
[4d51835]2523 attribute
2524 | attribute_list attribute
[1db21619]2525 { $$ = $2->addQualifiers( $1 ); }
[4d51835]2526 ;
[b87a5ed]2527
2528attribute: // GCC
[44a81853]2529 ATTRIBUTE '(' '(' attribute_name_list ')' ')'
2530 { $$ = $4; }
[4d51835]2531 ;
[b87a5ed]2532
[44a81853]2533attribute_name_list: // GCC
2534 attribute_name
2535 | attribute_name_list ',' attribute_name
[c0aa336]2536 { $$ = $3->addQualifiers( $1 ); }
[4d51835]2537 ;
[b87a5ed]2538
[44a81853]2539attribute_name: // GCC
[4d51835]2540 // empty
[44a81853]2541 { $$ = nullptr; }
2542 | attr_name
2543 { $$ = DeclarationNode::newAttribute( $1 ); }
2544 | attr_name '(' argument_expression_list ')'
2545 { $$ = DeclarationNode::newAttribute( $1, $3 ); }
[4d51835]2546 ;
[b87a5ed]2547
[44a81853]2548attr_name: // GCC
2549 IDENTIFIER
[5b2edbc]2550 | quasi_keyword
[44a81853]2551 | TYPEDEFname
2552 | TYPEGENname
[114014c]2553 | FALLTHROUGH
2554 { $$ = Token{ new string( "fallthrough" ), { nullptr, -1 } }; }
[44a81853]2555 | CONST
[9ff56e7]2556 { $$ = Token{ new string( "__const__" ), { nullptr, -1 } }; }
[4d51835]2557 ;
[51b73452]2558
[c11e31c]2559// ============================================================================
[de62360d]2560// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are necessary
2561// because the type of an identifier in wrapped around the identifier in the same form as its usage in an expression, as
2562// in:
[c11e31c]2563//
[b87a5ed]2564// int (*f())[10] { ... };
2565// ... (*f())[3] += 1; // definition mimics usage
[c11e31c]2566//
[de62360d]2567// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some or all of
2568// the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a particular context.
[c11e31c]2569// ============================================================================
2570
2571// ----------------------------------------------------------------------------
[de62360d]2572// The set of valid declarators before a compound statement for defining a function is less than the set of declarators
2573// to define a variable or function prototype, e.g.:
[c11e31c]2574//
[b87a5ed]2575// valid declaration invalid definition
2576// ----------------- ------------------
[4d51835]2577// int f; int f {}
2578// int *f; int *f {}
[b87a5ed]2579// int f[10]; int f[10] {}
[4d51835]2580// int (*f)(int); int (*f)(int) {}
[c11e31c]2581//
[de62360d]2582// To preclude this syntactic anomaly requires separating the grammar rules for variable and function declarators, hence
2583// variable_declarator and function_declarator.
[c11e31c]2584// ----------------------------------------------------------------------------
2585
[de62360d]2586// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern precludes
2587// declaring an array of functions versus a pointer to an array of functions.
[51b73452]2588
2589variable_declarator:
[4d51835]2590 paren_identifier attribute_list_opt
[1db21619]2591 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2592 | variable_ptr
2593 | variable_array attribute_list_opt
[1db21619]2594 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2595 | variable_function attribute_list_opt
[1db21619]2596 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2597 ;
[51b73452]2598
2599paren_identifier:
[4d51835]2600 identifier
[7fdb94e1]2601 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2602 | '(' paren_identifier ')' // redundant parenthesis
2603 { $$ = $2; }
2604 ;
[51b73452]2605
2606variable_ptr:
[dd51906]2607 ptrref_operator variable_declarator
[ce8c12f]2608 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2609 | ptrref_operator type_qualifier_list variable_declarator
[ce8c12f]2610 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2611 | '(' variable_ptr ')' attribute_list_opt
2612 { $$ = $2->addQualifiers( $4 ); } // redundant parenthesis
[4d51835]2613 ;
[51b73452]2614
2615variable_array:
[4d51835]2616 paren_identifier array_dimension
2617 { $$ = $1->addArray( $2 ); }
2618 | '(' variable_ptr ')' array_dimension
2619 { $$ = $2->addArray( $4 ); }
2620 | '(' variable_array ')' multi_array_dimension // redundant parenthesis
2621 { $$ = $2->addArray( $4 ); }
2622 | '(' variable_array ')' // redundant parenthesis
2623 { $$ = $2; }
2624 ;
[51b73452]2625
2626variable_function:
[4d51835]2627 '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2628 { $$ = $2->addParamList( $6 ); }
2629 | '(' variable_function ')' // redundant parenthesis
2630 { $$ = $2; }
2631 ;
[51b73452]2632
[c6b1105]2633// This pattern parses a function declarator that is not redefining a typedef name. For non-nested functions, there is
2634// no context where a function definition can redefine a typedef name, i.e., the typedef and function name cannot exist
2635// is the same scope. The pattern precludes returning arrays and functions versus pointers to arrays and functions.
[51b73452]2636
2637function_declarator:
[4d51835]2638 function_no_ptr attribute_list_opt
[1db21619]2639 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2640 | function_ptr
2641 | function_array attribute_list_opt
[1db21619]2642 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2643 ;
[51b73452]2644
2645function_no_ptr:
[4d51835]2646 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2647 { $$ = $1->addParamList( $4 ); }
2648 | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
2649 { $$ = $2->addParamList( $6 ); }
2650 | '(' function_no_ptr ')' // redundant parenthesis
2651 { $$ = $2; }
2652 ;
[51b73452]2653
2654function_ptr:
[dd51906]2655 ptrref_operator function_declarator
[ce8c12f]2656 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2657 | ptrref_operator type_qualifier_list function_declarator
[ce8c12f]2658 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[4d51835]2659 | '(' function_ptr ')'
2660 { $$ = $2; }
2661 ;
[51b73452]2662
2663function_array:
[4d51835]2664 '(' function_ptr ')' array_dimension
2665 { $$ = $2->addArray( $4 ); }
2666 | '(' function_array ')' multi_array_dimension // redundant parenthesis
2667 { $$ = $2->addArray( $4 ); }
2668 | '(' function_array ')' // redundant parenthesis
2669 { $$ = $2; }
2670 ;
[51b73452]2671
[c0aa336]2672// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4)
2673//
2674// f( a, b, c ) int a, *b, c[]; {}
2675//
2676// that is not redefining a typedef name (see function_declarator for additional comments). The pattern precludes
2677// returning arrays and functions versus pointers to arrays and functions.
[51b73452]2678
[c0aa336]2679KR_function_declarator:
2680 KR_function_no_ptr
2681 | KR_function_ptr
2682 | KR_function_array
[4d51835]2683 ;
[51b73452]2684
[c0aa336]2685KR_function_no_ptr:
[4d51835]2686 paren_identifier '(' identifier_list ')' // function_declarator handles empty parameter
2687 { $$ = $1->addIdList( $3 ); }
[c0a33d2]2688 | '(' KR_function_ptr ')' '(' push parameter_type_list_opt pop ')'
2689 { $$ = $2->addParamList( $6 ); }
[c0aa336]2690 | '(' KR_function_no_ptr ')' // redundant parenthesis
[4d51835]2691 { $$ = $2; }
2692 ;
[51b73452]2693
[c0aa336]2694KR_function_ptr:
2695 ptrref_operator KR_function_declarator
[ce8c12f]2696 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]2697 | ptrref_operator type_qualifier_list KR_function_declarator
[ce8c12f]2698 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2699 | '(' KR_function_ptr ')'
[4d51835]2700 { $$ = $2; }
2701 ;
[51b73452]2702
[c0aa336]2703KR_function_array:
2704 '(' KR_function_ptr ')' array_dimension
[4d51835]2705 { $$ = $2->addArray( $4 ); }
[c0aa336]2706 | '(' KR_function_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2707 { $$ = $2->addArray( $4 ); }
[c0aa336]2708 | '(' KR_function_array ')' // redundant parenthesis
[4d51835]2709 { $$ = $2; }
2710 ;
[51b73452]2711
[2871210]2712// This pattern parses a declaration for a variable or function prototype that redefines a type name, e.g.:
[c11e31c]2713//
[b87a5ed]2714// typedef int foo;
2715// {
2716// int foo; // redefine typedef name in new scope
2717// }
[c11e31c]2718//
[de62360d]2719// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2720// and functions versus pointers to arrays and functions.
[51b73452]2721
[c6b1105]2722variable_type_redeclarator:
[2871210]2723 paren_type attribute_list_opt
[1db21619]2724 { $$ = $1->addQualifiers( $2 ); }
[2871210]2725 | type_ptr
2726 | type_array attribute_list_opt
[1db21619]2727 { $$ = $1->addQualifiers( $2 ); }
[2871210]2728 | type_function attribute_list_opt
[1db21619]2729 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2730 ;
[51b73452]2731
[2871210]2732paren_type:
2733 typedef
[2f0a0678]2734 // hide type name in enclosing scope by variable name
[ecae5860]2735 { typedefTable.addToEnclosingScope( *$1->name, IDENTIFIER, "ID" ); }
[2871210]2736 | '(' paren_type ')'
[4d51835]2737 { $$ = $2; }
2738 ;
[51b73452]2739
[2871210]2740type_ptr:
[c6b1105]2741 ptrref_operator variable_type_redeclarator
[ce8c12f]2742 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c6b1105]2743 | ptrref_operator type_qualifier_list variable_type_redeclarator
[ce8c12f]2744 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2745 | '(' type_ptr ')' attribute_list_opt
2746 { $$ = $2->addQualifiers( $4 ); }
[4d51835]2747 ;
[51b73452]2748
[2871210]2749type_array:
2750 paren_type array_dimension
[4d51835]2751 { $$ = $1->addArray( $2 ); }
[2871210]2752 | '(' type_ptr ')' array_dimension
[4d51835]2753 { $$ = $2->addArray( $4 ); }
[2871210]2754 | '(' type_array ')' multi_array_dimension // redundant parenthesis
[4d51835]2755 { $$ = $2->addArray( $4 ); }
[2871210]2756 | '(' type_array ')' // redundant parenthesis
[4d51835]2757 { $$ = $2; }
2758 ;
[51b73452]2759
[2871210]2760type_function:
2761 paren_type '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]2762 { $$ = $1->addParamList( $4 ); }
[2871210]2763 | '(' type_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
[4d51835]2764 { $$ = $2->addParamList( $6 ); }
[2871210]2765 | '(' type_function ')' // redundant parenthesis
[4d51835]2766 { $$ = $2; }
2767 ;
[51b73452]2768
[c0aa336]2769// This pattern parses a declaration for a parameter variable of a function prototype or actual that is not redefining a
2770// typedef name and allows the C99 array options, which can only appear in a parameter list. The pattern precludes
2771// declaring an array of functions versus a pointer to an array of functions, and returning arrays and functions versus
2772// pointers to arrays and functions.
[51b73452]2773
2774identifier_parameter_declarator:
[4d51835]2775 paren_identifier attribute_list_opt
[1db21619]2776 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]2777 | '&' MUTEX paren_identifier attribute_list_opt
2778 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[4d51835]2779 | identifier_parameter_ptr
2780 | identifier_parameter_array attribute_list_opt
[1db21619]2781 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2782 | identifier_parameter_function attribute_list_opt
[1db21619]2783 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2784 ;
[51b73452]2785
2786identifier_parameter_ptr:
[dd51906]2787 ptrref_operator identifier_parameter_declarator
[ce8c12f]2788 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2789 | ptrref_operator type_qualifier_list identifier_parameter_declarator
[ce8c12f]2790 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2791 | '(' identifier_parameter_ptr ')' attribute_list_opt
2792 { $$ = $2->addQualifiers( $4 ); }
[4d51835]2793 ;
[51b73452]2794
2795identifier_parameter_array:
[4d51835]2796 paren_identifier array_parameter_dimension
2797 { $$ = $1->addArray( $2 ); }
2798 | '(' identifier_parameter_ptr ')' array_dimension
2799 { $$ = $2->addArray( $4 ); }
2800 | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
2801 { $$ = $2->addArray( $4 ); }
2802 | '(' identifier_parameter_array ')' // redundant parenthesis
2803 { $$ = $2; }
2804 ;
[51b73452]2805
2806identifier_parameter_function:
[c0a33d2]2807 paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2808 { $$ = $1->addParamList( $4 ); }
2809 | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2810 { $$ = $2->addParamList( $6 ); }
[4d51835]2811 | '(' identifier_parameter_function ')' // redundant parenthesis
2812 { $$ = $2; }
2813 ;
[b87a5ed]2814
[de62360d]2815// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
2816// e.g.:
[c11e31c]2817//
[b87a5ed]2818// typedef int foo;
[114014c]2819// forall( otype T ) struct foo;
[b87a5ed]2820// int f( int foo ); // redefine typedef name in new scope
[c11e31c]2821//
[c0aa336]2822// and allows the C99 array options, which can only appear in a parameter list.
[51b73452]2823
[2871210]2824type_parameter_redeclarator:
[4d51835]2825 typedef attribute_list_opt
[1db21619]2826 { $$ = $1->addQualifiers( $2 ); }
[b6b3c42]2827 | '&' MUTEX typedef attribute_list_opt
2828 { $$ = $3->addPointer( DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf ) )->addQualifiers( $4 ); }
[2871210]2829 | type_parameter_ptr
2830 | type_parameter_array attribute_list_opt
[1db21619]2831 { $$ = $1->addQualifiers( $2 ); }
[2871210]2832 | type_parameter_function attribute_list_opt
[1db21619]2833 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2834 ;
[51b73452]2835
2836typedef:
[4d51835]2837 TYPEDEFname
[7fdb94e1]2838 { $$ = DeclarationNode::newName( $1 ); }
[2871210]2839 | TYPEGENname
[7fdb94e1]2840 { $$ = DeclarationNode::newName( $1 ); }
[4d51835]2841 ;
[51b73452]2842
[2871210]2843type_parameter_ptr:
[dd51906]2844 ptrref_operator type_parameter_redeclarator
[ce8c12f]2845 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2846 | ptrref_operator type_qualifier_list type_parameter_redeclarator
[ce8c12f]2847 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2848 | '(' type_parameter_ptr ')' attribute_list_opt
2849 { $$ = $2->addQualifiers( $4 ); }
[4d51835]2850 ;
[51b73452]2851
[2871210]2852type_parameter_array:
[4d51835]2853 typedef array_parameter_dimension
2854 { $$ = $1->addArray( $2 ); }
[2871210]2855 | '(' type_parameter_ptr ')' array_parameter_dimension
[4d51835]2856 { $$ = $2->addArray( $4 ); }
2857 ;
[51b73452]2858
[2871210]2859type_parameter_function:
[c0a33d2]2860 typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2861 { $$ = $1->addParamList( $4 ); }
2862 | '(' type_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2863 { $$ = $2->addParamList( $6 ); }
[4d51835]2864 ;
[b87a5ed]2865
[de62360d]2866// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
2867// which the type applies, e.g.:
[c11e31c]2868//
[b87a5ed]2869// sizeof( int );
[c0aa336]2870// sizeof( int * );
[b87a5ed]2871// sizeof( int [10] );
[c0aa336]2872// sizeof( int (*)() );
2873// sizeof( int () );
[c11e31c]2874//
[de62360d]2875// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
2876// and functions versus pointers to arrays and functions.
[51b73452]2877
2878abstract_declarator:
[4d51835]2879 abstract_ptr
2880 | abstract_array attribute_list_opt
[1db21619]2881 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2882 | abstract_function attribute_list_opt
[1db21619]2883 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2884 ;
[51b73452]2885
2886abstract_ptr:
[dd51906]2887 ptrref_operator
[ce8c12f]2888 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]2889 | ptrref_operator type_qualifier_list
[ce8c12f]2890 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]2891 | ptrref_operator abstract_declarator
[ce8c12f]2892 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]2893 | ptrref_operator type_qualifier_list abstract_declarator
[ce8c12f]2894 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2895 | '(' abstract_ptr ')' attribute_list_opt
2896 { $$ = $2->addQualifiers( $4 ); }
[4d51835]2897 ;
[51b73452]2898
2899abstract_array:
[4d51835]2900 array_dimension
2901 | '(' abstract_ptr ')' array_dimension
2902 { $$ = $2->addArray( $4 ); }
2903 | '(' abstract_array ')' multi_array_dimension // redundant parenthesis
2904 { $$ = $2->addArray( $4 ); }
2905 | '(' abstract_array ')' // redundant parenthesis
2906 { $$ = $2; }
2907 ;
[51b73452]2908
2909abstract_function:
[c0a33d2]2910 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2911 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
2912 | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
2913 { $$ = $2->addParamList( $6 ); }
[4d51835]2914 | '(' abstract_function ')' // redundant parenthesis
2915 { $$ = $2; }
2916 ;
[51b73452]2917
2918array_dimension:
[4d51835]2919 // Only the first dimension can be empty.
[2871210]2920 '[' ']'
[4d51835]2921 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[2871210]2922 | '[' ']' multi_array_dimension
2923 { $$ = DeclarationNode::newArray( 0, 0, false )->addArray( $3 ); }
[4d51835]2924 | multi_array_dimension
2925 ;
[51b73452]2926
2927multi_array_dimension:
[c0a33d2]2928 '[' push assignment_expression pop ']'
2929 { $$ = DeclarationNode::newArray( $3, 0, false ); }
2930 | '[' push '*' pop ']' // C99
[4d51835]2931 { $$ = DeclarationNode::newVarArray( 0 ); }
[c0a33d2]2932 | multi_array_dimension '[' push assignment_expression pop ']'
2933 { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
2934 | multi_array_dimension '[' push '*' pop ']' // C99
[4d51835]2935 { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
2936 ;
[51b73452]2937
[c11e31c]2938// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
2939// identifier to which the type applies, e.g.:
2940//
[c0aa336]2941// int f( int ); // not handled here
2942// int f( int * ); // abstract function-prototype parameter; no parameter name specified
2943// int f( int (*)() ); // abstract function-prototype parameter; no parameter name specified
[b87a5ed]2944// int f( int (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]2945//
[de62360d]2946// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
[c0aa336]2947// and functions versus pointers to arrays and functions. In addition, the pattern handles the
2948// special meaning of parenthesis around a typedef name:
2949//
2950// ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
2951// parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
2952// not as redundant parentheses around the identifier."
2953//
2954// For example:
2955//
2956// typedef float T;
2957// int f( int ( T [5] ) ); // see abstract_parameter_declarator
2958// int g( int ( T ( int ) ) ); // see abstract_parameter_declarator
2959// int f( int f1( T a[5] ) ); // see identifier_parameter_declarator
2960// int g( int g1( T g2( int p ) ) ); // see identifier_parameter_declarator
2961//
2962// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
2963// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
2964// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
2965// functions.
[51b73452]2966
2967abstract_parameter_declarator:
[4d51835]2968 abstract_parameter_ptr
[b6b3c42]2969 | '&' MUTEX attribute_list_opt
2970 { $$ = DeclarationNode::newPointer( DeclarationNode::newTypeQualifier( Type::Mutex ), OperKinds::AddressOf )->addQualifiers( $3 ); }
[4d51835]2971 | abstract_parameter_array attribute_list_opt
[1db21619]2972 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2973 | abstract_parameter_function attribute_list_opt
[1db21619]2974 { $$ = $1->addQualifiers( $2 ); }
[4d51835]2975 ;
[51b73452]2976
2977abstract_parameter_ptr:
[dd51906]2978 ptrref_operator
[ce8c12f]2979 { $$ = DeclarationNode::newPointer( nullptr, $1 ); }
[dd51906]2980 | ptrref_operator type_qualifier_list
[ce8c12f]2981 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]2982 | ptrref_operator abstract_parameter_declarator
[ce8c12f]2983 { $$ = $2->addPointer( DeclarationNode::newPointer( nullptr, $1 ) ); }
[dd51906]2984 | ptrref_operator type_qualifier_list abstract_parameter_declarator
[ce8c12f]2985 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]2986 | '(' abstract_parameter_ptr ')' attribute_list_opt
2987 { $$ = $2->addQualifiers( $4 ); }
[4d51835]2988 ;
[51b73452]2989
2990abstract_parameter_array:
[4d51835]2991 array_parameter_dimension
2992 | '(' abstract_parameter_ptr ')' array_parameter_dimension
2993 { $$ = $2->addArray( $4 ); }
2994 | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
2995 { $$ = $2->addArray( $4 ); }
2996 | '(' abstract_parameter_array ')' // redundant parenthesis
2997 { $$ = $2; }
2998 ;
[51b73452]2999
3000abstract_parameter_function:
[c0a33d2]3001 '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3002 { $$ = DeclarationNode::newFunction( nullptr, nullptr, $3, nullptr ); }
3003 | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3004 { $$ = $2->addParamList( $6 ); }
[4d51835]3005 | '(' abstract_parameter_function ')' // redundant parenthesis
3006 { $$ = $2; }
3007 ;
[51b73452]3008
3009array_parameter_dimension:
[4d51835]3010 // Only the first dimension can be empty or have qualifiers.
3011 array_parameter_1st_dimension
3012 | array_parameter_1st_dimension multi_array_dimension
3013 { $$ = $1->addArray( $2 ); }
3014 | multi_array_dimension
3015 ;
[51b73452]3016
[c11e31c]3017// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
3018//
[de62360d]3019// ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
3020// a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
[51b73452]3021
3022array_parameter_1st_dimension:
[2871210]3023 '[' ']'
[4d51835]3024 { $$ = DeclarationNode::newArray( 0, 0, false ); }
[13e8427]3025 // multi_array_dimension handles the '[' '*' ']' case
[c0a33d2]3026 | '[' push type_qualifier_list '*' pop ']' // remaining C99
3027 { $$ = DeclarationNode::newVarArray( $3 ); }
3028 | '[' push type_qualifier_list pop ']'
3029 { $$ = DeclarationNode::newArray( 0, $3, false ); }
[13e8427]3030 // multi_array_dimension handles the '[' assignment_expression ']' case
[c0a33d2]3031 | '[' push type_qualifier_list assignment_expression pop ']'
3032 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3033 | '[' push STATIC type_qualifier_list_opt assignment_expression pop ']'
3034 { $$ = DeclarationNode::newArray( $5, $4, true ); }
3035 | '[' push type_qualifier_list STATIC assignment_expression pop ']'
3036 { $$ = DeclarationNode::newArray( $5, $3, true ); }
[4d51835]3037 ;
[b87a5ed]3038
[c0aa336]3039// This pattern parses a declaration of an abstract variable, but does not allow "int ()" for a function pointer.
[c11e31c]3040//
[c0aa336]3041// struct S {
3042// int;
3043// int *;
3044// int [10];
3045// int (*)();
3046// };
[51b73452]3047
3048variable_abstract_declarator:
[4d51835]3049 variable_abstract_ptr
3050 | variable_abstract_array attribute_list_opt
[1db21619]3051 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3052 | variable_abstract_function attribute_list_opt
[1db21619]3053 { $$ = $1->addQualifiers( $2 ); }
[4d51835]3054 ;
[51b73452]3055
3056variable_abstract_ptr:
[dd51906]3057 ptrref_operator
[ce8c12f]3058 { $$ = DeclarationNode::newPointer( 0, $1 ); }
[dd51906]3059 | ptrref_operator type_qualifier_list
[ce8c12f]3060 { $$ = DeclarationNode::newPointer( $2, $1 ); }
[dd51906]3061 | ptrref_operator variable_abstract_declarator
[ce8c12f]3062 { $$ = $2->addPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3063 | ptrref_operator type_qualifier_list variable_abstract_declarator
[ce8c12f]3064 { $$ = $3->addPointer( DeclarationNode::newPointer( $2, $1 ) ); }
[c0aa336]3065 | '(' variable_abstract_ptr ')' attribute_list_opt
3066 { $$ = $2->addQualifiers( $4 ); }
[4d51835]3067 ;
[51b73452]3068
3069variable_abstract_array:
[4d51835]3070 array_dimension
3071 | '(' variable_abstract_ptr ')' array_dimension
3072 { $$ = $2->addArray( $4 ); }
3073 | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
3074 { $$ = $2->addArray( $4 ); }
3075 | '(' variable_abstract_array ')' // redundant parenthesis
3076 { $$ = $2; }
3077 ;
[51b73452]3078
3079variable_abstract_function:
[c0a33d2]3080 '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
3081 { $$ = $2->addParamList( $6 ); }
[4d51835]3082 | '(' variable_abstract_function ')' // redundant parenthesis
3083 { $$ = $2; }
3084 ;
[b87a5ed]3085
[de62360d]3086// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
3087// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
[b87a5ed]3088
[c0aa336]3089cfa_identifier_parameter_declarator_tuple: // CFA
3090 cfa_identifier_parameter_declarator_no_tuple
3091 | cfa_abstract_tuple
3092 | type_qualifier_list cfa_abstract_tuple
[4d51835]3093 { $$ = $2->addQualifiers( $1 ); }
3094 ;
[b87a5ed]3095
[c0aa336]3096cfa_identifier_parameter_declarator_no_tuple: // CFA
3097 cfa_identifier_parameter_ptr
3098 | cfa_identifier_parameter_array
[4d51835]3099 ;
[b87a5ed]3100
[c0aa336]3101cfa_identifier_parameter_ptr: // CFA
[d0ffed1]3102 // No SUE declaration in parameter list.
3103 ptrref_operator type_specifier_nobody
[ce8c12f]3104 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[d0ffed1]3105 | type_qualifier_list ptrref_operator type_specifier_nobody
[ce8c12f]3106 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3107 | ptrref_operator cfa_abstract_function
[ce8c12f]3108 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3109 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3110 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3111 | ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3112 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3113 | type_qualifier_list ptrref_operator cfa_identifier_parameter_declarator_tuple
[ce8c12f]3114 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3115 ;
[b87a5ed]3116
[c0aa336]3117cfa_identifier_parameter_array: // CFA
[de62360d]3118 // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
3119 // shift/reduce conflict with new-style empty (void) function return type.
[d0ffed1]3120 '[' ']' type_specifier_nobody
[2871210]3121 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3122 | cfa_array_parameter_1st_dimension type_specifier_nobody
[4d51835]3123 { $$ = $2->addNewArray( $1 ); }
[d0ffed1]3124 | '[' ']' multi_array_dimension type_specifier_nobody
[2871210]3125 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[d0ffed1]3126 | cfa_array_parameter_1st_dimension multi_array_dimension type_specifier_nobody
[4d51835]3127 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[d0ffed1]3128 | multi_array_dimension type_specifier_nobody
[4d51835]3129 { $$ = $2->addNewArray( $1 ); }
[9059213]3130
[c0aa336]3131 | '[' ']' cfa_identifier_parameter_ptr
[2871210]3132 { $$ = $3->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3133 | cfa_array_parameter_1st_dimension cfa_identifier_parameter_ptr
[4d51835]3134 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3135 | '[' ']' multi_array_dimension cfa_identifier_parameter_ptr
[2871210]3136 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
[c0aa336]3137 | cfa_array_parameter_1st_dimension multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3138 { $$ = $3->addNewArray( $2 )->addNewArray( $1 ); }
[c0aa336]3139 | multi_array_dimension cfa_identifier_parameter_ptr
[4d51835]3140 { $$ = $2->addNewArray( $1 ); }
3141 ;
[51b73452]3142
[c0aa336]3143cfa_array_parameter_1st_dimension:
[c0a33d2]3144 '[' push type_qualifier_list '*' pop ']' // remaining C99
3145 { $$ = DeclarationNode::newVarArray( $3 ); }
3146 | '[' push type_qualifier_list assignment_expression pop ']'
3147 { $$ = DeclarationNode::newArray( $4, $3, false ); }
3148 | '[' push declaration_qualifier_list assignment_expression pop ']'
[4d51835]3149 // declaration_qualifier_list must be used because of shift/reduce conflict with
3150 // assignment_expression, so a semantic check is necessary to preclude them as a type_qualifier cannot
3151 // appear in this context.
[c0a33d2]3152 { $$ = DeclarationNode::newArray( $4, $3, true ); }
3153 | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
3154 { $$ = DeclarationNode::newArray( $5, $4->addQualifiers( $3 ), true ); }
[4d51835]3155 ;
[b87a5ed]3156
[de62360d]3157// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
3158// identifier to which the type applies, e.g.:
[c11e31c]3159//
[b87a5ed]3160// [int] f( int ); // abstract variable parameter; no parameter name specified
3161// [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
[c11e31c]3162//
3163// These rules need LR(3):
3164//
[c0aa336]3165// cfa_abstract_tuple identifier_or_type_name
[40de461]3166// '[' cfa_parameter_list ']' identifier_or_type_name '(' cfa_parameter_ellipsis_list_opt ')'
[c11e31c]3167//
3168// since a function return type can be syntactically identical to a tuple type:
3169//
[b87a5ed]3170// [int, int] t;
3171// [int, int] f( int );
[c11e31c]3172//
[2871210]3173// Therefore, it is necessary to look at the token after identifier_or_type_name to know when to reduce
[c0aa336]3174// cfa_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
3175// lookahead. To accomplish this, cfa_abstract_declarator has an entry point without tuple, and tuple declarations are
3176// duplicated when appearing with cfa_function_specifier.
[b87a5ed]3177
[c0aa336]3178cfa_abstract_declarator_tuple: // CFA
3179 cfa_abstract_tuple
3180 | type_qualifier_list cfa_abstract_tuple
[4d51835]3181 { $$ = $2->addQualifiers( $1 ); }
[c0aa336]3182 | cfa_abstract_declarator_no_tuple
[4d51835]3183 ;
[b87a5ed]3184
[c0aa336]3185cfa_abstract_declarator_no_tuple: // CFA
3186 cfa_abstract_ptr
3187 | cfa_abstract_array
[4d51835]3188 ;
[b87a5ed]3189
[c0aa336]3190cfa_abstract_ptr: // CFA
[dd51906]3191 ptrref_operator type_specifier
[ce8c12f]3192 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[dd51906]3193 | type_qualifier_list ptrref_operator type_specifier
[ce8c12f]3194 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3195 | ptrref_operator cfa_abstract_function
[ce8c12f]3196 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3197 | type_qualifier_list ptrref_operator cfa_abstract_function
[ce8c12f]3198 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[c0aa336]3199 | ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3200 { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0, $1 ) ); }
[c0aa336]3201 | type_qualifier_list ptrref_operator cfa_abstract_declarator_tuple
[ce8c12f]3202 { $$ = $3->addNewPointer( DeclarationNode::newPointer( $1, $2 ) ); }
[4d51835]3203 ;
[b87a5ed]3204
[c0aa336]3205cfa_abstract_array: // CFA
[de62360d]3206 // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce conflict with
3207 // empty (void) function return type.
[2871210]3208 '[' ']' type_specifier
[2298f728]3209 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[2871210]3210 | '[' ']' multi_array_dimension type_specifier
[2298f728]3211 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[4d51835]3212 | multi_array_dimension type_specifier
3213 { $$ = $2->addNewArray( $1 ); }
[c0aa336]3214 | '[' ']' cfa_abstract_ptr
[2298f728]3215 { $$ = $3->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3216 | '[' ']' multi_array_dimension cfa_abstract_ptr
[2298f728]3217 { $$ = $4->addNewArray( $3 )->addNewArray( DeclarationNode::newArray( nullptr, nullptr, false ) ); }
[c0aa336]3218 | multi_array_dimension cfa_abstract_ptr
[4d51835]3219 { $$ = $2->addNewArray( $1 ); }
3220 ;
[b87a5ed]3221
[c0aa336]3222cfa_abstract_tuple: // CFA
[c0a33d2]3223 '[' push cfa_abstract_parameter_list pop ']'
3224 { $$ = DeclarationNode::newTuple( $3 ); }
[35718a9]3225 | '[' push type_specifier_nobody ELLIPSIS pop ']'
[13e8427]3226 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[35718a9]3227 | '[' push type_specifier_nobody ELLIPSIS constant_expression pop ']'
[13e8427]3228 { SemanticError( yylloc, "Tuple array currently unimplemented." ); $$ = nullptr; }
[4d51835]3229 ;
[b87a5ed]3230
[c0aa336]3231cfa_abstract_function: // CFA
[40de461]3232// '[' ']' '(' cfa_parameter_ellipsis_list_opt ')'
[1b29996]3233// { $$ = DeclarationNode::newFunction( nullptr, DeclarationNode::newTuple( nullptr ), $4, nullptr ); }
[40de461]3234 cfa_abstract_tuple '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3235 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[40de461]3236 | cfa_function_return '(' push cfa_parameter_ellipsis_list_opt pop ')'
[c0a33d2]3237 { $$ = DeclarationNode::newFunction( nullptr, $1, $4, nullptr ); }
[4d51835]3238 ;
[b87a5ed]3239
[de62360d]3240// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
3241// each declaration, and in the specifier-qualifier list in each structure declaration and type name."
[c11e31c]3242//
[de62360d]3243// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
3244// the declaration specifiers in a declaration is an obsolescent feature."
[c11e31c]3245//
3246// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
3247// prototype-format parameter type declarators) is an obsolescent feature."
3248//
[de62360d]3249// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
3250// declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
[51b73452]3251
[c11e31c]3252//************************* MISCELLANEOUS ********************************
[51b73452]3253
[b87a5ed]3254comma_opt: // redundant comma
[4d51835]3255 // empty
3256 | ','
3257 ;
[51b73452]3258
[994d080]3259default_initialize_opt:
[4d51835]3260 // empty
[58dd019]3261 { $$ = nullptr; }
[4d51835]3262 | '=' assignment_expression
3263 { $$ = $2; }
3264 ;
[51b73452]3265
3266%%
[a1c9ddd]3267
[c11e31c]3268// ----end of grammar----
[51b73452]3269
[c11e31c]3270// Local Variables: //
[b87a5ed]3271// mode: c++ //
[de62360d]3272// tab-width: 4 //
[c11e31c]3273// compile-command: "make install" //
3274// End: //
Note: See TracBrowser for help on using the repository browser.