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kc3-lang/angle/src/compiler/translator/glslang.y
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Author :
Olli Etuaho
Date : 2016-12-16 09:32:03
Hash : 4de340ac
Message : Remove extraInfo parameter from compiler diagnostic functions This makes error messages more consistent. It was not clear what was supposed to go to the extraInfo parameter, and previously it was mostly being misused, resulting in poorly formatted error messages. Sometimes the order of parameters to the diagnostic functions like error() and warning() was wrong altogether. The diagnostics API is simpler when there's only the "reason" and "token" parameters that have clear meaning and that are separated by consistent punctuation in the output. Fixes error messages like "redifinition interface block member" to be grammatically reasonable like the rest of the error messages. For other error messages, punctuation is added to make them clearer. Example: "invalid layout qualifier location requires an argument" is changed to "invalid layout qualifier: location requires an argument". Extra spaces are also removed from the beginning of error messages. BUG=angleproject:1670 BUG=angleproject:911 TEST=angle_unittests Change-Id: Id5fb1a1f2892fad2b796aaef47ffb07e9d79759c Reviewed-on: https://chromium-review.googlesource.com/420789 Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
- src/compiler/translator/glslang.y
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/* // // Copyright (c) 2002-2014 The ANGLE Project Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // This file contains the Yacc grammar for GLSL ES. Based on ANSI C Yacc grammar: http://www.lysator.liu.se/c/ANSI-C-grammar-y.html IF YOU MODIFY THIS FILE YOU ALSO NEED TO RUN generate_parser.sh, WHICH GENERATES THE GLSL ES PARSER (glslang_tab.cpp AND glslang_tab.h). */ %{ // // Copyright (c) 2002-2014 The ANGLE Project Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. // // This file is auto-generated by generate_parser.sh. DO NOT EDIT! // clang-format off // Ignore errors in auto-generated code. #if defined(__GNUC__) #pragma GCC diagnostic ignored "-Wunused-function" #pragma GCC diagnostic ignored "-Wunused-variable" #pragma GCC diagnostic ignored "-Wswitch-enum" #elif defined(_MSC_VER) #pragma warning(disable: 4065) #pragma warning(disable: 4189) #pragma warning(disable: 4244) #pragma warning(disable: 4505) #pragma warning(disable: 4701) #pragma warning(disable: 4702) #endif #include "angle_gl.h" #include "compiler/translator/Cache.h" #include "compiler/translator/SymbolTable.h" #include "compiler/translator/ParseContext.h" #include "GLSLANG/ShaderLang.h" #define YYENABLE_NLS 0 using namespace sh; %} %expect 1 /* One shift reduce conflict because of if | else */ %parse-param {TParseContext* context} %param {void *scanner} %define api.pure full %locations %code requires { #define YYLTYPE TSourceLoc #define YYLTYPE_IS_DECLARED 1 } %union { struct { union { TString *string; float f; int i; unsigned int u; bool b; }; TSymbol* symbol; } lex; struct { TOperator op; union { TIntermNode *intermNode; TIntermNodePair nodePair; TIntermTyped *intermTypedNode; TIntermAggregate *intermAggregate; TIntermBlock *intermBlock; TIntermDeclaration *intermDeclaration; TIntermSwitch *intermSwitch; TIntermCase *intermCase; }; union { TTypeSpecifierNonArray typeSpecifierNonArray; TPublicType type; TPrecision precision; TLayoutQualifier layoutQualifier; TQualifier qualifier; TFunction *function; TParameter param; TField *field; TFieldList *fieldList; TQualifierWrapperBase *qualifierWrapper; TTypeQualifierBuilder *typeQualifierBuilder; }; } interm; } %{ extern int yylex(YYSTYPE* yylval, YYLTYPE* yylloc, void* yyscanner); extern void yyerror(YYLTYPE* yylloc, TParseContext* context, void *scanner, const char* reason); #define YYLLOC_DEFAULT(Current, Rhs, N) \ do { \ if (N) { \ (Current).first_file = YYRHSLOC(Rhs, 1).first_file; \ (Current).first_line = YYRHSLOC(Rhs, 1).first_line; \ (Current).last_file = YYRHSLOC(Rhs, N).last_file; \ (Current).last_line = YYRHSLOC(Rhs, N).last_line; \ } \ else { \ (Current).first_file = YYRHSLOC(Rhs, 0).last_file; \ (Current).first_line = YYRHSLOC(Rhs, 0).last_line; \ (Current).last_file = YYRHSLOC(Rhs, 0).last_file; \ (Current).last_line = YYRHSLOC(Rhs, 0).last_line; \ } \ } while (0) #define VERTEX_ONLY(S, L) { \ if (context->getShaderType() != GL_VERTEX_SHADER) { \ context->error(L, " supported in vertex shaders only ", S); \ } \ } #define FRAG_ONLY(S, L) { \ if (context->getShaderType() != GL_FRAGMENT_SHADER) { \ context->error(L, " supported in fragment shaders only ", S); \ } \ } #define COMPUTE_ONLY(S, L) { \ if (context->getShaderType() != GL_COMPUTE_SHADER) { \ context->error(L, " supported in compute shaders only ", S); \ } \ } #define NON_COMPUTE_ONLY(S, L) { \ if (context->getShaderType() != GL_VERTEX_SHADER && context->getShaderType() != GL_FRAGMENT_SHADER) { \ context->error(L, " supported in vertex and fragment shaders only ", S); \ } \ } #define ES2_ONLY(S, L) { \ if (context->getShaderVersion() != 100) { \ context->error(L, " supported in GLSL ES 1.00 only ", S); \ } \ } #define ES3_OR_NEWER(TOKEN, LINE, REASON) { \ if (context->getShaderVersion() < 300) { \ context->error(LINE, REASON " supported in GLSL ES 3.00 and above only ", TOKEN); \ } \ } #define ES3_1_ONLY(TOKEN, LINE, REASON) { \ if (context->getShaderVersion() != 310) { \ context->error(LINE, REASON " supported in GLSL ES 3.10 only ", TOKEN); \ } \ } %} %token <lex> INVARIANT HIGH_PRECISION MEDIUM_PRECISION LOW_PRECISION PRECISION %token <lex> ATTRIBUTE CONST_QUAL BOOL_TYPE FLOAT_TYPE INT_TYPE UINT_TYPE %token <lex> BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN SWITCH CASE DEFAULT %token <lex> BVEC2 BVEC3 BVEC4 IVEC2 IVEC3 IVEC4 VEC2 VEC3 VEC4 UVEC2 UVEC3 UVEC4 %token <lex> MATRIX2 MATRIX3 MATRIX4 IN_QUAL OUT_QUAL INOUT_QUAL UNIFORM VARYING %token <lex> MATRIX2x3 MATRIX3x2 MATRIX2x4 MATRIX4x2 MATRIX3x4 MATRIX4x3 %token <lex> CENTROID FLAT SMOOTH %token <lex> READONLY WRITEONLY COHERENT RESTRICT VOLATILE SHARED %token <lex> STRUCT VOID_TYPE WHILE %token <lex> SAMPLER2D SAMPLERCUBE SAMPLER_EXTERNAL_OES SAMPLER2DRECT SAMPLER2DARRAY %token <lex> ISAMPLER2D ISAMPLER3D ISAMPLERCUBE ISAMPLER2DARRAY %token <lex> USAMPLER2D USAMPLER3D USAMPLERCUBE USAMPLER2DARRAY %token <lex> SAMPLER3D SAMPLER3DRECT SAMPLER2DSHADOW SAMPLERCUBESHADOW SAMPLER2DARRAYSHADOW %token <lex> IMAGE2D IIMAGE2D UIMAGE2D IMAGE3D IIMAGE3D UIMAGE3D IMAGE2DARRAY IIMAGE2DARRAY UIMAGE2DARRAY %token <lex> IMAGECUBE IIMAGECUBE UIMAGECUBE %token <lex> LAYOUT %token <lex> IDENTIFIER TYPE_NAME FLOATCONSTANT INTCONSTANT UINTCONSTANT BOOLCONSTANT %token <lex> FIELD_SELECTION %token <lex> LEFT_OP RIGHT_OP %token <lex> INC_OP DEC_OP LE_OP GE_OP EQ_OP NE_OP %token <lex> AND_OP OR_OP XOR_OP MUL_ASSIGN DIV_ASSIGN ADD_ASSIGN %token <lex> MOD_ASSIGN LEFT_ASSIGN RIGHT_ASSIGN AND_ASSIGN XOR_ASSIGN OR_ASSIGN %token <lex> SUB_ASSIGN %token <lex> LEFT_PAREN RIGHT_PAREN LEFT_BRACKET RIGHT_BRACKET LEFT_BRACE RIGHT_BRACE DOT %token <lex> COMMA COLON EQUAL SEMICOLON BANG DASH TILDE PLUS STAR SLASH PERCENT %token <lex> LEFT_ANGLE RIGHT_ANGLE VERTICAL_BAR CARET AMPERSAND QUESTION %type <lex> identifier %type <interm> assignment_operator unary_operator %type <interm.intermTypedNode> variable_identifier primary_expression postfix_expression %type <interm.intermTypedNode> expression integer_expression assignment_expression %type <interm.intermTypedNode> unary_expression multiplicative_expression additive_expression %type <interm.intermTypedNode> relational_expression equality_expression %type <interm.intermTypedNode> conditional_expression constant_expression %type <interm.intermTypedNode> logical_or_expression logical_xor_expression logical_and_expression %type <interm.intermTypedNode> shift_expression and_expression exclusive_or_expression inclusive_or_expression %type <interm.intermTypedNode> function_call initializer condition conditionopt %type <interm.intermBlock> translation_unit %type <interm.intermNode> function_definition statement simple_statement %type <interm.intermBlock> statement_list compound_statement compound_statement_no_new_scope %type <interm.intermNode> declaration_statement selection_statement expression_statement %type <interm.intermNode> declaration external_declaration %type <interm.intermNode> for_init_statement %type <interm.nodePair> selection_rest_statement for_rest_statement %type <interm.intermSwitch> switch_statement %type <interm.intermCase> case_label %type <interm.intermNode> iteration_statement jump_statement statement_no_new_scope statement_with_scope %type <interm> single_declaration init_declarator_list %type <interm> parameter_declaration parameter_declarator parameter_type_specifier %type <interm.layoutQualifier> layout_qualifier_id_list layout_qualifier_id %type <interm.type> fully_specified_type type_specifier %type <interm.precision> precision_qualifier %type <interm.layoutQualifier> layout_qualifier %type <interm.qualifier> interpolation_qualifier %type <interm.qualifierWrapper> storage_qualifier single_type_qualifier invariant_qualifier %type <interm.typeQualifierBuilder> type_qualifier %type <interm.typeSpecifierNonArray> type_specifier_nonarray struct_specifier %type <interm.type> type_specifier_no_prec %type <interm.field> struct_declarator %type <interm.fieldList> struct_declarator_list struct_declaration struct_declaration_list %type <interm.function> function_header function_declarator function_identifier %type <interm.function> function_header_with_parameters function_call_header %type <interm> function_call_header_with_parameters function_call_header_no_parameters function_call_generic function_prototype %type <interm> function_call_or_method %type <lex> enter_struct %start translation_unit %% identifier : IDENTIFIER | TYPE_NAME variable_identifier : IDENTIFIER { // The symbol table search was done in the lexical phase $$ = context->parseVariableIdentifier(@1, $1.string, $1.symbol); // don't delete $1.string, it's used by error recovery, and the pool // pop will reclaim the memory } ; primary_expression : variable_identifier { $$ = $1; } | INTCONSTANT { TConstantUnion *unionArray = new TConstantUnion[1]; unionArray->setIConst($1.i); $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtInt, EbpUndefined, EvqConst), @1); } | UINTCONSTANT { TConstantUnion *unionArray = new TConstantUnion[1]; unionArray->setUConst($1.u); $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtUInt, EbpUndefined, EvqConst), @1); } | FLOATCONSTANT { TConstantUnion *unionArray = new TConstantUnion[1]; unionArray->setFConst($1.f); $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtFloat, EbpUndefined, EvqConst), @1); } | BOOLCONSTANT { TConstantUnion *unionArray = new TConstantUnion[1]; unionArray->setBConst($1.b); $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @1); } | LEFT_PAREN expression RIGHT_PAREN { $$ = $2; } ; postfix_expression : primary_expression { $$ = $1; } | postfix_expression LEFT_BRACKET integer_expression RIGHT_BRACKET { $$ = context->addIndexExpression($1, @2, $3); } | function_call { $$ = $1; } | postfix_expression DOT FIELD_SELECTION { $$ = context->addFieldSelectionExpression($1, @2, *$3.string, @3); } | postfix_expression INC_OP { $$ = context->addUnaryMathLValue(EOpPostIncrement, $1, @2); } | postfix_expression DEC_OP { $$ = context->addUnaryMathLValue(EOpPostDecrement, $1, @2); } ; integer_expression : expression { context->checkIsScalarInteger($1, "[]"); $$ = $1; } ; function_call : function_call_or_method { bool fatalError = false; $$ = context->addFunctionCallOrMethod($1.function, $1.nodePair.node1, $1.nodePair.node2, @1, &fatalError); if (fatalError) { YYERROR; } } ; function_call_or_method : function_call_generic { $$ = $1; $$.nodePair.node2 = nullptr; } | postfix_expression DOT function_call_generic { ES3_OR_NEWER("", @3, "methods"); $$ = $3; $$.nodePair.node2 = $1; } ; function_call_generic : function_call_header_with_parameters RIGHT_PAREN { $$ = $1; } | function_call_header_no_parameters RIGHT_PAREN { $$ = $1; } ; function_call_header_no_parameters : function_call_header VOID_TYPE { $$.function = $1; $$.nodePair.node1 = nullptr; } | function_call_header { $$.function = $1; $$.nodePair.node1 = nullptr; } ; function_call_header_with_parameters : function_call_header assignment_expression { const TType *type = new TType($2->getType()); $1->addParameter(TConstParameter(type)); $$.function = $1; $$.nodePair.node1 = TIntermediate::MakeAggregate($2, @2); } | function_call_header_with_parameters COMMA assignment_expression { const TType *type = new TType($3->getType()); $1.function->addParameter(TConstParameter(type)); $$.function = $1.function; $$.nodePair.node1 = context->intermediate.growAggregate($1.intermNode, $3, @2); } ; function_call_header : function_identifier LEFT_PAREN { $$ = $1; } ; // Grammar Note: Constructors look like functions, but are recognized as types. function_identifier : type_specifier_no_prec { if ($1.array) { ES3_OR_NEWER("[]", @1, "array constructor"); } $$ = context->addConstructorFunc($1); } | IDENTIFIER { context->checkIsNotReserved(@1, *$1.string); const TType *type = TCache::getType(EbtVoid, EbpUndefined); TFunction *function = new TFunction($1.string, type); $$ = function; } | FIELD_SELECTION { context->checkIsNotReserved(@1, *$1.string); const TType *type = TCache::getType(EbtVoid, EbpUndefined); TFunction *function = new TFunction($1.string, type); $$ = function; } ; unary_expression : postfix_expression { $$ = $1; } | INC_OP unary_expression { $$ = context->addUnaryMathLValue(EOpPreIncrement, $2, @1); } | DEC_OP unary_expression { $$ = context->addUnaryMathLValue(EOpPreDecrement, $2, @1); } | unary_operator unary_expression { if ($1.op != EOpNull) { $$ = context->addUnaryMath($1.op, $2, @1); } else $$ = $2; } ; // Grammar Note: No traditional style type casts. unary_operator : PLUS { $$.op = EOpPositive; } | DASH { $$.op = EOpNegative; } | BANG { $$.op = EOpLogicalNot; } | TILDE { ES3_OR_NEWER("~", @$, "bit-wise operator"); $$.op = EOpBitwiseNot; } ; // Grammar Note: No '*' or '&' unary ops. Pointers are not supported. multiplicative_expression : unary_expression { $$ = $1; } | multiplicative_expression STAR unary_expression { $$ = context->addBinaryMath(EOpMul, $1, $3, @2); } | multiplicative_expression SLASH unary_expression { $$ = context->addBinaryMath(EOpDiv, $1, $3, @2); } | multiplicative_expression PERCENT unary_expression { ES3_OR_NEWER("%", @2, "integer modulus operator"); $$ = context->addBinaryMath(EOpIMod, $1, $3, @2); } ; additive_expression : multiplicative_expression { $$ = $1; } | additive_expression PLUS multiplicative_expression { $$ = context->addBinaryMath(EOpAdd, $1, $3, @2); } | additive_expression DASH multiplicative_expression { $$ = context->addBinaryMath(EOpSub, $1, $3, @2); } ; shift_expression : additive_expression { $$ = $1; } | shift_expression LEFT_OP additive_expression { ES3_OR_NEWER("<<", @2, "bit-wise operator"); $$ = context->addBinaryMath(EOpBitShiftLeft, $1, $3, @2); } | shift_expression RIGHT_OP additive_expression { ES3_OR_NEWER(">>", @2, "bit-wise operator"); $$ = context->addBinaryMath(EOpBitShiftRight, $1, $3, @2); } ; relational_expression : shift_expression { $$ = $1; } | relational_expression LEFT_ANGLE shift_expression { $$ = context->addBinaryMathBooleanResult(EOpLessThan, $1, $3, @2); } | relational_expression RIGHT_ANGLE shift_expression { $$ = context->addBinaryMathBooleanResult(EOpGreaterThan, $1, $3, @2); } | relational_expression LE_OP shift_expression { $$ = context->addBinaryMathBooleanResult(EOpLessThanEqual, $1, $3, @2); } | relational_expression GE_OP shift_expression { $$ = context->addBinaryMathBooleanResult(EOpGreaterThanEqual, $1, $3, @2); } ; equality_expression : relational_expression { $$ = $1; } | equality_expression EQ_OP relational_expression { $$ = context->addBinaryMathBooleanResult(EOpEqual, $1, $3, @2); } | equality_expression NE_OP relational_expression { $$ = context->addBinaryMathBooleanResult(EOpNotEqual, $1, $3, @2); } ; and_expression : equality_expression { $$ = $1; } | and_expression AMPERSAND equality_expression { ES3_OR_NEWER("&", @2, "bit-wise operator"); $$ = context->addBinaryMath(EOpBitwiseAnd, $1, $3, @2); } ; exclusive_or_expression : and_expression { $$ = $1; } | exclusive_or_expression CARET and_expression { ES3_OR_NEWER("^", @2, "bit-wise operator"); $$ = context->addBinaryMath(EOpBitwiseXor, $1, $3, @2); } ; inclusive_or_expression : exclusive_or_expression { $$ = $1; } | inclusive_or_expression VERTICAL_BAR exclusive_or_expression { ES3_OR_NEWER("|", @2, "bit-wise operator"); $$ = context->addBinaryMath(EOpBitwiseOr, $1, $3, @2); } ; logical_and_expression : inclusive_or_expression { $$ = $1; } | logical_and_expression AND_OP inclusive_or_expression { $$ = context->addBinaryMathBooleanResult(EOpLogicalAnd, $1, $3, @2); } ; logical_xor_expression : logical_and_expression { $$ = $1; } | logical_xor_expression XOR_OP logical_and_expression { $$ = context->addBinaryMathBooleanResult(EOpLogicalXor, $1, $3, @2); } ; logical_or_expression : logical_xor_expression { $$ = $1; } | logical_or_expression OR_OP logical_xor_expression { $$ = context->addBinaryMathBooleanResult(EOpLogicalOr, $1, $3, @2); } ; conditional_expression : logical_or_expression { $$ = $1; } | logical_or_expression QUESTION expression COLON assignment_expression { $$ = context->addTernarySelection($1, $3, $5, @2); } ; assignment_expression : conditional_expression { $$ = $1; } | unary_expression assignment_operator assignment_expression { context->checkCanBeLValue(@2, "assign", $1); $$ = context->addAssign($2.op, $1, $3, @2); } ; assignment_operator : EQUAL { $$.op = EOpAssign; } | MUL_ASSIGN { $$.op = EOpMulAssign; } | DIV_ASSIGN { $$.op = EOpDivAssign; } | MOD_ASSIGN { ES3_OR_NEWER("%=", @$, "integer modulus operator"); $$.op = EOpIModAssign; } | ADD_ASSIGN { $$.op = EOpAddAssign; } | SUB_ASSIGN { $$.op = EOpSubAssign; } | LEFT_ASSIGN { ES3_OR_NEWER("<<=", @$, "bit-wise operator"); $$.op = EOpBitShiftLeftAssign; } | RIGHT_ASSIGN { ES3_OR_NEWER(">>=", @$, "bit-wise operator"); $$.op = EOpBitShiftRightAssign; } | AND_ASSIGN { ES3_OR_NEWER("&=", @$, "bit-wise operator"); $$.op = EOpBitwiseAndAssign; } | XOR_ASSIGN { ES3_OR_NEWER("^=", @$, "bit-wise operator"); $$.op = EOpBitwiseXorAssign; } | OR_ASSIGN { ES3_OR_NEWER("|=", @$, "bit-wise operator"); $$.op = EOpBitwiseOrAssign; } ; expression : assignment_expression { $$ = $1; } | expression COMMA assignment_expression { $$ = context->addComma($1, $3, @2); } ; constant_expression : conditional_expression { context->checkIsConst($1); $$ = $1; } ; enter_struct : IDENTIFIER LEFT_BRACE { context->enterStructDeclaration(@1, *$1.string); $$ = $1; } ; declaration : function_prototype SEMICOLON { $$ = context->addFunctionPrototypeDeclaration(*($1.function), @1); } | init_declarator_list SEMICOLON { $$ = $1.intermDeclaration; } | PRECISION precision_qualifier type_specifier_no_prec SEMICOLON { if (($2 == EbpHigh) && (context->getShaderType() == GL_FRAGMENT_SHADER) && !context->getFragmentPrecisionHigh()) { context->error(@1, "precision is not supported in fragment shader", "highp"); } if (!context->symbolTable.setDefaultPrecision( $3, $2 )) { context->error(@1, "illegal type argument for default precision qualifier", getBasicString($3.getBasicType())); } $$ = 0; } | type_qualifier enter_struct struct_declaration_list RIGHT_BRACE SEMICOLON { ES3_OR_NEWER($2.string->c_str(), @1, "interface blocks"); $$ = context->addInterfaceBlock(*$1, @2, *$2.string, $3, NULL, @$, NULL, @$); } | type_qualifier enter_struct struct_declaration_list RIGHT_BRACE IDENTIFIER SEMICOLON { ES3_OR_NEWER($2.string->c_str(), @1, "interface blocks"); $$ = context->addInterfaceBlock(*$1, @2, *$2.string, $3, $5.string, @5, NULL, @$); } | type_qualifier enter_struct struct_declaration_list RIGHT_BRACE IDENTIFIER LEFT_BRACKET constant_expression RIGHT_BRACKET SEMICOLON { ES3_OR_NEWER($2.string->c_str(), @1, "interface blocks"); $$ = context->addInterfaceBlock(*$1, @2, *$2.string, $3, $5.string, @5, $7, @6); } | type_qualifier SEMICOLON { context->parseGlobalLayoutQualifier(*$1); $$ = 0; } | type_qualifier IDENTIFIER SEMICOLON // e.g. to qualify an existing variable as invariant { $$ = context->parseInvariantDeclaration(*$1, @2, $2.string, $2.symbol); } ; function_prototype : function_declarator RIGHT_PAREN { $$.function = context->parseFunctionDeclarator(@2, $1); context->exitFunctionDeclaration(); } ; function_declarator : function_header { $$ = $1; } | function_header_with_parameters { $$ = $1; } ; function_header_with_parameters : function_header parameter_declaration { // Add the parameter $$ = $1; if ($2.param.type->getBasicType() != EbtVoid) $1->addParameter($2.param.turnToConst()); else delete $2.param.type; } | function_header_with_parameters COMMA parameter_declaration { // // Only first parameter of one-parameter functions can be void // The check for named parameters not being void is done in parameter_declarator // if ($3.param.type->getBasicType() == EbtVoid) { // // This parameter > first is void // context->error(@2, "cannot be an argument type except for '(void)'", "void"); delete $3.param.type; } else { // Add the parameter $$ = $1; $1->addParameter($3.param.turnToConst()); } } ; function_header : fully_specified_type IDENTIFIER LEFT_PAREN { $$ = context->parseFunctionHeader($1, $2.string, @2); context->symbolTable.push(); context->enterFunctionDeclaration(); } ; parameter_declarator // Type + name : type_specifier identifier { if ($1.getBasicType() == EbtVoid) { context->error(@2, "illegal use of type 'void'", $2.string->c_str()); } context->checkIsNotReserved(@2, *$2.string); TParameter param = {$2.string, new TType($1)}; $$.param = param; } | type_specifier identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { // Check that we can make an array out of this type context->checkIsValidTypeForArray(@3, $1); context->checkIsNotReserved(@2, *$2.string); unsigned int size = context->checkIsValidArraySize(@3, $4); $1.setArraySize(size); TType* type = new TType($1); TParameter param = { $2.string, type }; $$.param = param; } ; parameter_declaration // // The only parameter qualifier a parameter can have are // IN_QUAL, OUT_QUAL, INOUT_QUAL, or CONST. // // // Type + name // : type_qualifier parameter_declarator { $$ = $2; context->checkIsParameterQualifierValid(@2, *$1, $2.param.type); } | parameter_declarator { $$ = $1; $$.param.type->setQualifier(EvqIn); } | type_qualifier parameter_type_specifier { $$ = $2; context->checkIsParameterQualifierValid(@2, *$1, $2.param.type); } | parameter_type_specifier { $$ = $1; $$.param.type->setQualifier(EvqIn); } ; parameter_type_specifier : type_specifier { TParameter param = { 0, new TType($1) }; $$.param = param; } ; init_declarator_list : single_declaration { $$ = $1; } | init_declarator_list COMMA identifier { $$ = $1; context->parseDeclarator($$.type, @3, *$3.string, $$.intermDeclaration); } | init_declarator_list COMMA identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { $$ = $1; context->parseArrayDeclarator($$.type, @3, *$3.string, @4, $5, $$.intermDeclaration); } | init_declarator_list COMMA identifier LEFT_BRACKET RIGHT_BRACKET EQUAL initializer { ES3_OR_NEWER("[]", @3, "implicitly sized array"); $$ = $1; context->parseArrayInitDeclarator($$.type, @3, *$3.string, @4, nullptr, @6, $7, $$.intermDeclaration); } | init_declarator_list COMMA identifier LEFT_BRACKET constant_expression RIGHT_BRACKET EQUAL initializer { ES3_OR_NEWER("=", @7, "first-class arrays (array initializer)"); $$ = $1; context->parseArrayInitDeclarator($$.type, @3, *$3.string, @4, $5, @7, $8, $$.intermDeclaration); } | init_declarator_list COMMA identifier EQUAL initializer { $$ = $1; context->parseInitDeclarator($$.type, @3, *$3.string, @4, $5, $$.intermDeclaration); } ; single_declaration : fully_specified_type { $$.type = $1; $$.intermDeclaration = context->parseSingleDeclaration($$.type, @1, ""); } | fully_specified_type identifier { $$.type = $1; $$.intermDeclaration = context->parseSingleDeclaration($$.type, @2, *$2.string); } | fully_specified_type identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { $$.type = $1; $$.intermDeclaration = context->parseSingleArrayDeclaration($$.type, @2, *$2.string, @3, $4); } | fully_specified_type identifier LEFT_BRACKET RIGHT_BRACKET EQUAL initializer { ES3_OR_NEWER("[]", @3, "implicitly sized array"); $$.type = $1; $$.intermDeclaration = context->parseSingleArrayInitDeclaration($$.type, @2, *$2.string, @3, nullptr, @5, $6); } | fully_specified_type identifier LEFT_BRACKET constant_expression RIGHT_BRACKET EQUAL initializer { ES3_OR_NEWER("=", @6, "first-class arrays (array initializer)"); $$.type = $1; $$.intermDeclaration = context->parseSingleArrayInitDeclaration($$.type, @2, *$2.string, @3, $4, @6, $7); } | fully_specified_type identifier EQUAL initializer { $$.type = $1; $$.intermDeclaration = context->parseSingleInitDeclaration($$.type, @2, *$2.string, @3, $4); } ; fully_specified_type : type_specifier { context->addFullySpecifiedType(&$1); $$ = $1; } | type_qualifier type_specifier { $$ = context->addFullySpecifiedType(*$1, $2); } ; interpolation_qualifier : SMOOTH { $$ = EvqSmooth; } | FLAT { $$ = EvqFlat; } ; type_qualifier : single_type_qualifier { $$ = context->createTypeQualifierBuilder(@1); $$->appendQualifier($1); } | type_qualifier single_type_qualifier { $$ = $1; $$->appendQualifier($2); } ; invariant_qualifier : INVARIANT { // empty } ; single_type_qualifier : storage_qualifier { context->checkLocalVariableConstStorageQualifier(*$1); $$ = $1; } | layout_qualifier { context->checkIsAtGlobalLevel(@1, "layout"); $$ = new TLayoutQualifierWrapper($1, @1); } | precision_qualifier { $$ = new TPrecisionQualifierWrapper($1, @1); } | interpolation_qualifier { $$ = new TInterpolationQualifierWrapper($1, @1); } | invariant_qualifier { context->checkIsAtGlobalLevel(@1, "invariant"); $$ = new TInvariantQualifierWrapper(@1); } ; storage_qualifier : ATTRIBUTE { VERTEX_ONLY("attribute", @1); ES2_ONLY("attribute", @1); context->checkIsAtGlobalLevel(@1, "attribute"); $$ = new TStorageQualifierWrapper(EvqAttribute, @1); } | VARYING { ES2_ONLY("varying", @1); context->checkIsAtGlobalLevel(@1, "varying"); if (context->getShaderType() == GL_VERTEX_SHADER) $$ = new TStorageQualifierWrapper(EvqVaryingOut, @1); else $$ = new TStorageQualifierWrapper(EvqVaryingIn, @1); } | CONST_QUAL { $$ = new TStorageQualifierWrapper(EvqConst, @1); } | IN_QUAL { if (context->declaringFunction()) { $$ = new TStorageQualifierWrapper(EvqIn, @1); } else if (context->getShaderType() == GL_FRAGMENT_SHADER) { ES3_OR_NEWER("in", @1, "storage qualifier"); $$ = new TStorageQualifierWrapper(EvqFragmentIn, @1); } else if (context->getShaderType() == GL_VERTEX_SHADER) { ES3_OR_NEWER("in", @1, "storage qualifier"); $$ = new TStorageQualifierWrapper(EvqVertexIn, @1); } else { $$ = new TStorageQualifierWrapper(EvqComputeIn, @1); } } | OUT_QUAL { if (context->declaringFunction()) { $$ = new TStorageQualifierWrapper(EvqOut, @1); } else { ES3_OR_NEWER("out", @1, "storage qualifier"); NON_COMPUTE_ONLY("out", @1); if (context->getShaderType() == GL_FRAGMENT_SHADER) { $$ = new TStorageQualifierWrapper(EvqFragmentOut, @1); } else { $$ = new TStorageQualifierWrapper(EvqVertexOut, @1); } } } | INOUT_QUAL { if (!context->declaringFunction()) { context->error(@1, "invalid qualifier: can be only used with function parameters", "inout"); } $$ = new TStorageQualifierWrapper(EvqInOut, @1); } | CENTROID { ES3_OR_NEWER("centroid", @1, "storage qualifier"); $$ = new TStorageQualifierWrapper(EvqCentroid, @1); } | UNIFORM { context->checkIsAtGlobalLevel(@1, "uniform"); $$ = new TStorageQualifierWrapper(EvqUniform, @1); } | READONLY { $$ = new TMemoryQualifierWrapper(EvqReadOnly, @1); } | WRITEONLY { $$ = new TMemoryQualifierWrapper(EvqWriteOnly, @1); } | COHERENT { $$ = new TMemoryQualifierWrapper(EvqCoherent, @1); } | RESTRICT { $$ = new TMemoryQualifierWrapper(EvqRestrict, @1); } | VOLATILE { $$ = new TMemoryQualifierWrapper(EvqVolatile, @1); } | SHARED { context->checkIsAtGlobalLevel(@1, "shared"); COMPUTE_ONLY("shared", @1); $$ = new TStorageQualifierWrapper(EvqShared, @1); } ; type_specifier : type_specifier_no_prec { $$ = $1; $$.precision = context->symbolTable.getDefaultPrecision($1.getBasicType()); } ; precision_qualifier : HIGH_PRECISION { $$ = EbpHigh; } | MEDIUM_PRECISION { $$ = EbpMedium; } | LOW_PRECISION { $$ = EbpLow; } ; layout_qualifier : LAYOUT LEFT_PAREN layout_qualifier_id_list RIGHT_PAREN { ES3_OR_NEWER("layout", @1, "qualifier"); $$ = $3; } ; layout_qualifier_id_list : layout_qualifier_id { $$ = $1; } | layout_qualifier_id_list COMMA layout_qualifier_id { $$ = context->joinLayoutQualifiers($1, $3, @3); } ; layout_qualifier_id : IDENTIFIER { $$ = context->parseLayoutQualifier(*$1.string, @1); } | IDENTIFIER EQUAL INTCONSTANT { $$ = context->parseLayoutQualifier(*$1.string, @1, $3.i, @3); } | IDENTIFIER EQUAL UINTCONSTANT { $$ = context->parseLayoutQualifier(*$1.string, @1, $3.i, @3); } | SHARED { $$ = context->parseLayoutQualifier("shared", @1); } ; type_specifier_no_prec : type_specifier_nonarray { $$.initialize($1, (context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary)); } | type_specifier_nonarray LEFT_BRACKET RIGHT_BRACKET { ES3_OR_NEWER("[]", @2, "implicitly sized array"); $$.initialize($1, (context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary)); $$.setArraySize(0); } | type_specifier_nonarray LEFT_BRACKET constant_expression RIGHT_BRACKET { $$.initialize($1, (context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary)); if (context->checkIsValidTypeForArray(@2, $$)) { unsigned int size = context->checkIsValidArraySize(@2, $3); $$.setArraySize(size); } } ; type_specifier_nonarray : VOID_TYPE { $$.initialize(EbtVoid, @1); } | FLOAT_TYPE { $$.initialize(EbtFloat, @1); } | INT_TYPE { $$.initialize(EbtInt, @1); } | UINT_TYPE { $$.initialize(EbtUInt, @1); } | BOOL_TYPE { $$.initialize(EbtBool, @1); } | VEC2 { $$.initialize(EbtFloat, @1); $$.setAggregate(2); } | VEC3 { $$.initialize(EbtFloat, @1); $$.setAggregate(3); } | VEC4 { $$.initialize(EbtFloat, @1); $$.setAggregate(4); } | BVEC2 { $$.initialize(EbtBool, @1); $$.setAggregate(2); } | BVEC3 { $$.initialize(EbtBool, @1); $$.setAggregate(3); } | BVEC4 { $$.initialize(EbtBool, @1); $$.setAggregate(4); } | IVEC2 { $$.initialize(EbtInt, @1); $$.setAggregate(2); } | IVEC3 { $$.initialize(EbtInt, @1); $$.setAggregate(3); } | IVEC4 { $$.initialize(EbtInt, @1); $$.setAggregate(4); } | UVEC2 { $$.initialize(EbtUInt, @1); $$.setAggregate(2); } | UVEC3 { $$.initialize(EbtUInt, @1); $$.setAggregate(3); } | UVEC4 { $$.initialize(EbtUInt, @1); $$.setAggregate(4); } | MATRIX2 { $$.initialize(EbtFloat, @1); $$.setMatrix(2, 2); } | MATRIX3 { $$.initialize(EbtFloat, @1); $$.setMatrix(3, 3); } | MATRIX4 { $$.initialize(EbtFloat, @1); $$.setMatrix(4, 4); } | MATRIX2x3 { $$.initialize(EbtFloat, @1); $$.setMatrix(2, 3); } | MATRIX3x2 { $$.initialize(EbtFloat, @1); $$.setMatrix(3, 2); } | MATRIX2x4 { $$.initialize(EbtFloat, @1); $$.setMatrix(2, 4); } | MATRIX4x2 { $$.initialize(EbtFloat, @1); $$.setMatrix(4, 2); } | MATRIX3x4 { $$.initialize(EbtFloat, @1); $$.setMatrix(3, 4); } | MATRIX4x3 { $$.initialize(EbtFloat, @1); $$.setMatrix(4, 3); } | SAMPLER2D { $$.initialize(EbtSampler2D, @1); } | SAMPLER3D { $$.initialize(EbtSampler3D, @1); } | SAMPLERCUBE { $$.initialize(EbtSamplerCube, @1); } | SAMPLER2DARRAY { $$.initialize(EbtSampler2DArray, @1); } | ISAMPLER2D { $$.initialize(EbtISampler2D, @1); } | ISAMPLER3D { $$.initialize(EbtISampler3D, @1); } | ISAMPLERCUBE { $$.initialize(EbtISamplerCube, @1); } | ISAMPLER2DARRAY { $$.initialize(EbtISampler2DArray, @1); } | USAMPLER2D { $$.initialize(EbtUSampler2D, @1); } | USAMPLER3D { $$.initialize(EbtUSampler3D, @1); } | USAMPLERCUBE { $$.initialize(EbtUSamplerCube, @1); } | USAMPLER2DARRAY { $$.initialize(EbtUSampler2DArray, @1); } | SAMPLER2DSHADOW { $$.initialize(EbtSampler2DShadow, @1); } | SAMPLERCUBESHADOW { $$.initialize(EbtSamplerCubeShadow, @1); } | SAMPLER2DARRAYSHADOW { $$.initialize(EbtSampler2DArrayShadow, @1); } | SAMPLER_EXTERNAL_OES { if (!context->supportsExtension("GL_OES_EGL_image_external") && !context->supportsExtension("GL_NV_EGL_stream_consumer_external")) { context->error(@1, "unsupported type", "samplerExternalOES"); } $$.initialize(EbtSamplerExternalOES, @1); } | SAMPLER2DRECT { if (!context->supportsExtension("GL_ARB_texture_rectangle")) { context->error(@1, "unsupported type", "sampler2DRect"); } $$.initialize(EbtSampler2DRect, @1); } | struct_specifier { $$ = $1; } | IMAGE2D { $$.initialize(EbtImage2D, @1); } | IIMAGE2D { $$.initialize(EbtIImage2D, @1); } | UIMAGE2D { $$.initialize(EbtUImage2D, @1); } | IMAGE3D { $$.initialize(EbtImage3D, @1); } | IIMAGE3D { $$.initialize(EbtIImage3D, @1); } | UIMAGE3D { $$.initialize(EbtUImage3D, @1); } | IMAGE2DARRAY { $$.initialize(EbtImage2DArray, @1); } | IIMAGE2DARRAY { $$.initialize(EbtIImage2DArray, @1); } | UIMAGE2DARRAY { $$.initialize(EbtUImage2DArray, @1); } | IMAGECUBE { $$.initialize(EbtImageCube, @1); } | IIMAGECUBE { $$.initialize(EbtIImageCube, @1); } | UIMAGECUBE { $$.initialize(EbtUImageCube, @1); } | TYPE_NAME { // // This is for user defined type names. The lexical phase looked up the // type. // TType& structure = static_cast<TVariable*>($1.symbol)->getType(); $$.initialize(EbtStruct, @1); $$.userDef = &structure; } ; struct_specifier : STRUCT identifier LEFT_BRACE { context->enterStructDeclaration(@2, *$2.string); } struct_declaration_list RIGHT_BRACE { $$ = context->addStructure(@1, @2, $2.string, $5); } | STRUCT LEFT_BRACE { context->enterStructDeclaration(@2, *$2.string); } struct_declaration_list RIGHT_BRACE { $$ = context->addStructure(@1, @$, NewPoolTString(""), $4); } ; struct_declaration_list : struct_declaration { $$ = $1; } | struct_declaration_list struct_declaration { $$ = context->combineStructFieldLists($1, $2, @2); } ; struct_declaration : type_specifier struct_declarator_list SEMICOLON { $$ = context->addStructDeclaratorList($1, $2); } | type_qualifier type_specifier struct_declarator_list SEMICOLON { // ES3 Only, but errors should be handled elsewhere $$ = context->addStructDeclaratorListWithQualifiers(*$1, &$2, $3); } ; struct_declarator_list : struct_declarator { $$ = NewPoolTFieldList(); $$->push_back($1); } | struct_declarator_list COMMA struct_declarator { $$->push_back($3); } ; struct_declarator : identifier { context->checkIsNotReserved(@1, *$1.string); TType* type = new TType(EbtVoid, EbpUndefined); $$ = new TField(type, $1.string, @1); } | identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { context->checkIsNotReserved(@1, *$1.string); TType* type = new TType(EbtVoid, EbpUndefined); unsigned int size = context->checkIsValidArraySize(@3, $3); type->setArraySize(size); $$ = new TField(type, $1.string, @1); } ; initializer : assignment_expression { $$ = $1; } ; declaration_statement : declaration { $$ = $1; } ; statement : compound_statement { $$ = $1; } | simple_statement { $$ = $1; } ; // Grammar Note: Labeled statements for SWITCH only; 'goto' is not supported. simple_statement : declaration_statement { $$ = $1; } | expression_statement { $$ = $1; } | selection_statement { $$ = $1; } | switch_statement { $$ = $1; } | case_label { $$ = $1; } | iteration_statement { $$ = $1; } | jump_statement { $$ = $1; } ; compound_statement : LEFT_BRACE RIGHT_BRACE { $$ = 0; } | LEFT_BRACE { context->symbolTable.push(); } statement_list { context->symbolTable.pop(); } RIGHT_BRACE { if ($3 != 0) { $3->setLine(@$); } $$ = $3; } ; statement_no_new_scope : compound_statement_no_new_scope { $$ = $1; } | simple_statement { $$ = $1; } ; statement_with_scope : { context->symbolTable.push(); } compound_statement_no_new_scope { context->symbolTable.pop(); $$ = $2; } | { context->symbolTable.push(); } simple_statement { context->symbolTable.pop(); $$ = $2; } ; compound_statement_no_new_scope // Statement that doesn't create a new scope, for selection_statement, iteration_statement : LEFT_BRACE RIGHT_BRACE { $$ = 0; } | LEFT_BRACE statement_list RIGHT_BRACE { if ($2) { $2->setLine(@$); } $$ = $2; } ; statement_list : statement { $$ = new TIntermBlock(); $$->setLine(@$); $$->appendStatement($1); } | statement_list statement { $$ = $1; $$->appendStatement($2); } ; expression_statement : SEMICOLON { $$ = 0; } | expression SEMICOLON { $$ = static_cast<TIntermNode*>($1); } ; selection_statement : IF LEFT_PAREN expression RIGHT_PAREN selection_rest_statement { context->checkIsScalarBool(@1, $3); $$ = context->intermediate.addIfElse($3, $5, @1); } ; selection_rest_statement : statement_with_scope ELSE statement_with_scope { $$.node1 = $1; $$.node2 = $3; } | statement_with_scope { $$.node1 = $1; $$.node2 = 0; } ; switch_statement : SWITCH LEFT_PAREN expression RIGHT_PAREN { context->incrSwitchNestingLevel(); } compound_statement { $$ = context->addSwitch($3, $6, @1); context->decrSwitchNestingLevel(); } ; case_label : CASE constant_expression COLON { $$ = context->addCase($2, @1); } | DEFAULT COLON { $$ = context->addDefault(@1); } ; condition // In 1996 c++ draft, conditions can include single declarations : expression { $$ = $1; context->checkIsScalarBool($1->getLine(), $1); } | fully_specified_type identifier EQUAL initializer { TIntermBinary *initNode = nullptr; context->checkIsScalarBool(@2, $1); if (!context->executeInitializer(@2, *$2.string, $1, $4, &initNode)) $$ = $4; else { $$ = 0; } } ; iteration_statement : WHILE LEFT_PAREN { context->symbolTable.push(); context->incrLoopNestingLevel(); } condition RIGHT_PAREN statement_no_new_scope { context->symbolTable.pop(); $$ = context->intermediate.addLoop(ELoopWhile, 0, $4, 0, $6, @1); context->decrLoopNestingLevel(); } | DO { context->incrLoopNestingLevel(); } statement_with_scope WHILE LEFT_PAREN expression RIGHT_PAREN SEMICOLON { context->checkIsScalarBool(@8, $6); $$ = context->intermediate.addLoop(ELoopDoWhile, 0, $6, 0, $3, @4); context->decrLoopNestingLevel(); } | FOR LEFT_PAREN { context->symbolTable.push(); context->incrLoopNestingLevel(); } for_init_statement for_rest_statement RIGHT_PAREN statement_no_new_scope { context->symbolTable.pop(); $$ = context->intermediate.addLoop(ELoopFor, $4, reinterpret_cast<TIntermTyped*>($5.node1), reinterpret_cast<TIntermTyped*>($5.node2), $7, @1); context->decrLoopNestingLevel(); } ; for_init_statement : expression_statement { $$ = $1; } | declaration_statement { $$ = $1; } ; conditionopt : condition { $$ = $1; } | /* May be null */ { $$ = 0; } ; for_rest_statement : conditionopt SEMICOLON { $$.node1 = $1; $$.node2 = 0; } | conditionopt SEMICOLON expression { $$.node1 = $1; $$.node2 = $3; } ; jump_statement : CONTINUE SEMICOLON { $$ = context->addBranch(EOpContinue, @1); } | BREAK SEMICOLON { $$ = context->addBranch(EOpBreak, @1); } | RETURN SEMICOLON { $$ = context->addBranch(EOpReturn, @1); } | RETURN expression SEMICOLON { $$ = context->addBranch(EOpReturn, $2, @1); } | DISCARD SEMICOLON { FRAG_ONLY("discard", @1); $$ = context->addBranch(EOpKill, @1); } ; // Grammar Note: No 'goto'. Gotos are not supported. translation_unit : external_declaration { $$ = new TIntermBlock(); $$->setLine(@$); $$->appendStatement($1); context->setTreeRoot($$); } | translation_unit external_declaration { $$->appendStatement($2); } ; external_declaration : function_definition { $$ = $1; } | declaration { $$ = $1; } ; function_definition : function_prototype { context->parseFunctionDefinitionHeader(@1, &($1.function), &$1.intermAggregate); } compound_statement_no_new_scope { $$ = context->addFunctionDefinition(*($1.function), $1.intermAggregate, $3, @1); } ; %% int glslang_parse(TParseContext* context) { return yyparse(context, context->getScanner()); }