| /* |
| // |
| // 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; |
| TIntermFunctionCallOrMethod callOrMethodPair; |
| TIntermTyped *intermTypedNode; |
| TIntermAggregate *intermAggregate; |
| TIntermBlock *intermBlock; |
| TIntermDeclaration *intermDeclaration; |
| TIntermFunctionPrototype *intermFunctionPrototype; |
| TIntermSwitch *intermSwitch; |
| TIntermCase *intermCase; |
| }; |
| union { |
| TVector<unsigned int> *arraySizes; |
| 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 COMPUTE_ONLY(S, L) { \ |
| if (context->getShaderType() != GL_COMPUTE_SHADER) { \ |
| context->error(L, " supported in compute 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_OR_NEWER_OR_MULTIVIEW(TOKEN, LINE, REASON) { \ |
| if (context->getShaderVersion() < 300 && !context->isExtensionEnabled(TExtension::OVR_multiview)) { \ |
| 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 BUFFER 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> SAMPLER2DMS ISAMPLER2DMS USAMPLER2DMS |
| %token <lex> SAMPLER3D SAMPLER3DRECT SAMPLER2DSHADOW SAMPLERCUBESHADOW SAMPLER2DARRAYSHADOW |
| %token <lex> SAMPLEREXTERNAL2DY2YEXT |
| %token <lex> IMAGE2D IIMAGE2D UIMAGE2D IMAGE3D IIMAGE3D UIMAGE3D IMAGE2DARRAY IIMAGE2DARRAY UIMAGE2DARRAY |
| %token <lex> IMAGECUBE IIMAGECUBE UIMAGECUBE |
| %token <lex> ATOMICUINT |
| %token <lex> LAYOUT |
| %token <lex> YUVCSCSTANDARDEXT YUVCSCSTANDARDEXTCONSTANT |
| |
| %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.op> 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 |
| |
| %type <interm.intermNode> condition conditionopt |
| %type <interm.intermBlock> translation_unit |
| %type <interm.intermNode> function_definition statement simple_statement |
| %type <interm.intermBlock> statement_list compound_statement_with_scope 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.param> parameter_declaration parameter_declarator parameter_type_specifier |
| %type <interm.layoutQualifier> layout_qualifier_id_list layout_qualifier_id |
| |
| // Note: array_specifier guaranteed to be non-null. |
| %type <interm.arraySizes> array_specifier |
| |
| %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); |
| $$ = context->addScalarLiteral(unionArray, @1); |
| } |
| | UINTCONSTANT { |
| TConstantUnion *unionArray = new TConstantUnion[1]; |
| unionArray->setUConst($1.u); |
| $$ = context->addScalarLiteral(unionArray, @1); |
| } |
| | FLOATCONSTANT { |
| TConstantUnion *unionArray = new TConstantUnion[1]; |
| unionArray->setFConst($1.f); |
| $$ = context->addScalarLiteral(unionArray, @1); |
| } |
| | BOOLCONSTANT { |
| TConstantUnion *unionArray = new TConstantUnion[1]; |
| unionArray->setBConst($1.b); |
| $$ = context->addScalarLiteral(unionArray, @1); |
| } |
| | YUVCSCSTANDARDEXTCONSTANT { |
| if (!context->checkCanUseExtension(@1, TExtension::EXT_YUV_target)) |
| { |
| context->error(@1, "unsupported value", $1.string->c_str()); |
| } |
| TConstantUnion *unionArray = new TConstantUnion[1]; |
| unionArray->setYuvCscStandardEXTConst(getYuvCscStandardEXT($1.string->c_str())); |
| $$ = context->addScalarLiteral(unionArray, @1); |
| } |
| | LEFT_PAREN expression RIGHT_PAREN { |
| $$ = $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, "[]"); |
| $$ = $1; |
| } |
| ; |
| |
| function_call |
| : function_call_or_method { |
| $$ = context->addFunctionCallOrMethod($1.function, $1.callOrMethodPair.arguments, $1.callOrMethodPair.thisNode, @1); |
| } |
| ; |
| |
| function_call_or_method |
| : function_call_generic { |
| $$ = $1; |
| $$.callOrMethodPair.thisNode = nullptr; |
| } |
| | postfix_expression DOT function_call_generic { |
| ES3_OR_NEWER("", @3, "methods"); |
| $$ = $3; |
| $$.callOrMethodPair.thisNode = $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 { |
| $$.function = $1; |
| $$.callOrMethodPair.arguments = context->createEmptyArgumentsList(); |
| } |
| | function_call_header { |
| $$.function = $1; |
| $$.callOrMethodPair.arguments = context->createEmptyArgumentsList(); |
| } |
| ; |
| |
| function_call_header_with_parameters |
| : function_call_header assignment_expression { |
| $$.callOrMethodPair.arguments = context->createEmptyArgumentsList(); |
| $$.function = $1; |
| $$.callOrMethodPair.arguments->push_back($2); |
| } |
| | function_call_header_with_parameters COMMA assignment_expression { |
| $$.function = $1.function; |
| $$.callOrMethodPair.arguments->push_back($3); |
| } |
| ; |
| |
| function_call_header |
| : function_identifier LEFT_PAREN { |
| $$ = $1; |
| } |
| ; |
| |
| // Grammar Note: Constructors look like functions, but are recognized as types. |
| |
| function_identifier |
| : type_specifier_no_prec { |
| $$ = context->addConstructorFunc($1); |
| } |
| | IDENTIFIER { |
| $$ = context->addNonConstructorFunc($1.string, @1); |
| } |
| | FIELD_SELECTION { |
| $$ = context->addNonConstructorFunc($1.string, @1); |
| } |
| ; |
| |
| unary_expression |
| : postfix_expression { |
| $$ = $1; |
| } |
| | INC_OP unary_expression { |
| $$ = context->addUnaryMathLValue(EOpPreIncrement, $2, @1); |
| } |
| | DEC_OP unary_expression { |
| $$ = context->addUnaryMathLValue(EOpPreDecrement, $2, @1); |
| } |
| | unary_operator unary_expression { |
| $$ = context->addUnaryMath($1, $2, @1); |
| } |
| ; |
| // Grammar Note: No traditional style type casts. |
| |
| unary_operator |
| : PLUS { $$ = EOpPositive; } |
| | DASH { $$ = EOpNegative; } |
| | BANG { $$ = EOpLogicalNot; } |
| | TILDE { |
| ES3_OR_NEWER("~", @$, "bit-wise operator"); |
| $$ = EOpBitwiseNot; |
| } |
| ; |
| // Grammar Note: No '*' or '&' unary ops. Pointers are not supported. |
| |
| multiplicative_expression |
| : unary_expression { $$ = $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 { |
| $$ = context->addAssign($2, $1, $3, @2); |
| } |
| ; |
| |
| assignment_operator |
| : EQUAL { $$ = EOpAssign; } |
| | MUL_ASSIGN { $$ = EOpMulAssign; } |
| | DIV_ASSIGN { $$ = EOpDivAssign; } |
| | MOD_ASSIGN { |
| ES3_OR_NEWER("%=", @$, "integer modulus operator"); |
| $$ = EOpIModAssign; |
| } |
| | ADD_ASSIGN { $$ = EOpAddAssign; } |
| | SUB_ASSIGN { $$ = EOpSubAssign; } |
| | LEFT_ASSIGN { |
| ES3_OR_NEWER("<<=", @$, "bit-wise operator"); |
| $$ = EOpBitShiftLeftAssign; |
| } |
| | RIGHT_ASSIGN { |
| ES3_OR_NEWER(">>=", @$, "bit-wise operator"); |
| $$ = EOpBitShiftRightAssign; |
| } |
| | AND_ASSIGN { |
| ES3_OR_NEWER("&=", @$, "bit-wise operator"); |
| $$ = EOpBitwiseAndAssign; |
| } |
| | XOR_ASSIGN { |
| ES3_OR_NEWER("^=", @$, "bit-wise operator"); |
| $$ = EOpBitwiseXorAssign; |
| } |
| | OR_ASSIGN { |
| ES3_OR_NEWER("|=", @$, "bit-wise operator"); |
| $$ = 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 { |
| context->parseDefaultPrecisionQualifier($2, $3, @1); |
| $$ = nullptr; |
| } |
| | type_qualifier enter_struct struct_declaration_list RIGHT_BRACE SEMICOLON { |
| ES3_OR_NEWER($2.string->c_str(), @1, "interface blocks"); |
| $$ = 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); |
| $$ = nullptr; |
| } |
| | type_qualifier IDENTIFIER SEMICOLON // e.g. to qualify an existing variable as invariant |
| { |
| $$ = 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.type->getBasicType() != EbtVoid) |
| { |
| $1->addParameter($2.turnToConst()); |
| } |
| } |
| | function_header_with_parameters COMMA parameter_declaration { |
| $$ = $1; |
| // Only first parameter of one-parameter functions can be void |
| // The check for named parameters not being void is done in parameter_declarator |
| if ($3.type->getBasicType() == EbtVoid) |
| { |
| // This parameter > first is void |
| context->error(@2, "cannot be a parameter type except for '(void)'", "void"); |
| } |
| else |
| { |
| $1->addParameter($3.turnToConst()); |
| } |
| } |
| ; |
| |
| function_header |
| : fully_specified_type IDENTIFIER LEFT_PAREN { |
| $$ = context->parseFunctionHeader($1, $2.string, @2); |
| |
| context->symbolTable.push(); |
| context->enterFunctionDeclaration(); |
| } |
| ; |
| |
| parameter_declarator |
| // Type + name |
| : type_specifier identifier { |
| $$ = context->parseParameterDeclarator($1, $2.string, @2); |
| } |
| | type_specifier identifier array_specifier { |
| $$ = context->parseParameterArrayDeclarator($2.string, @2, *($3), @3, &$1); |
| } |
| ; |
| |
| parameter_declaration |
| : type_qualifier parameter_declarator { |
| $$ = $2; |
| context->checkIsParameterQualifierValid(@2, *$1, $2.type); |
| } |
| | parameter_declarator { |
| $$ = $1; |
| $$.type->setQualifier(EvqIn); |
| } |
| | type_qualifier parameter_type_specifier { |
| $$ = $2; |
| context->checkIsParameterQualifierValid(@2, *$1, $2.type); |
| } |
| | parameter_type_specifier { |
| $$ = $1; |
| $$.type->setQualifier(EvqIn); |
| } |
| ; |
| |
| parameter_type_specifier |
| : type_specifier { |
| TParameter param = { 0, new TType($1) }; |
| $$ = param; |
| } |
| ; |
| |
| init_declarator_list |
| : single_declaration { |
| $$ = $1; |
| } |
| | init_declarator_list COMMA identifier { |
| $$ = $1; |
| context->parseDeclarator($$.type, @3, *$3.string, $$.intermDeclaration); |
| } |
| | init_declarator_list COMMA identifier array_specifier { |
| $$ = $1; |
| context->parseArrayDeclarator($$.type, @3, *$3.string, @4, *($4), $$.intermDeclaration); |
| } |
| | init_declarator_list COMMA identifier array_specifier EQUAL initializer { |
| ES3_OR_NEWER("=", @5, "first-class arrays (array initializer)"); |
| $$ = $1; |
| context->parseArrayInitDeclarator($$.type, @3, *$3.string, @4, *($4), @5, $6, $$.intermDeclaration); |
| } |
| | init_declarator_list COMMA identifier EQUAL initializer { |
| $$ = $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 array_specifier { |
| $$.type = $1; |
| $$.intermDeclaration = context->parseSingleArrayDeclaration($$.type, @2, *$2.string, @3, *($3)); |
| } |
| | fully_specified_type identifier array_specifier EQUAL initializer { |
| ES3_OR_NEWER("[]", @3, "first-class arrays (array initializer)"); |
| $$.type = $1; |
| $$.intermDeclaration = context->parseSingleArrayInitDeclaration($$.type, @2, *$2.string, @3, *($3), @4, $5); |
| } |
| | 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); |
| $$ = context->parseGlobalStorageQualifier(EvqAttribute, @1); |
| } |
| | VARYING { |
| ES2_ONLY("varying", @1); |
| $$ = context->parseVaryingQualifier(@1); |
| } |
| | CONST_QUAL { |
| $$ = new TStorageQualifierWrapper(EvqConst, @1); |
| } |
| | IN_QUAL { |
| $$ = context->parseInQualifier(@1); |
| } |
| | OUT_QUAL { |
| $$ = context->parseOutQualifier(@1); |
| } |
| | INOUT_QUAL { |
| $$ = context->parseInOutQualifier(@1); |
| } |
| | CENTROID { |
| ES3_OR_NEWER("centroid", @1, "storage qualifier"); |
| $$ = new TStorageQualifierWrapper(EvqCentroid, @1); |
| } |
| | UNIFORM { |
| $$ = context->parseGlobalStorageQualifier(EvqUniform, @1); |
| } |
| | BUFFER { |
| ES3_1_ONLY("buffer", @1, "storage qualifier"); |
| $$ = context->parseGlobalStorageQualifier(EvqBuffer, @1); |
| } |
| | READONLY { |
| $$ = 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 { |
| COMPUTE_ONLY("shared", @1); |
| $$ = context->parseGlobalStorageQualifier(EvqShared, @1); |
| } |
| ; |
| |
| type_specifier |
| : type_specifier_no_prec { |
| $$ = $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_OR_MULTIVIEW("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 array_specifier { |
| $$.initialize($1, (context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary)); |
| $$.setArraySizes($2); |
| } |
| ; |
| |
| array_specifier |
| : LEFT_BRACKET RIGHT_BRACKET { |
| ES3_OR_NEWER("[]", @1, "implicitly sized array"); |
| $$ = new TVector<unsigned int>(); |
| $$->push_back(0u); |
| } |
| | LEFT_BRACKET constant_expression RIGHT_BRACKET { |
| $$ = new TVector<unsigned int>(); |
| unsigned int size = context->checkIsValidArraySize(@1, $2); |
| // Make the type an array even if size check failed. |
| // This ensures useless error messages regarding a variable's non-arrayness won't follow. |
| $$->push_back(size); |
| } |
| | array_specifier LEFT_BRACKET RIGHT_BRACKET { |
| ES3_1_ONLY("[]", @2, "arrays of arrays"); |
| $$ = $1; |
| $$->insert($$->begin(), 0u); |
| } |
| | array_specifier LEFT_BRACKET constant_expression RIGHT_BRACKET { |
| ES3_1_ONLY("[]", @2, "arrays of arrays"); |
| $$ = $1; |
| unsigned int size = context->checkIsValidArraySize(@2, $3); |
| // Make the type an array even if size check failed. |
| // This ensures useless error messages regarding a variable's non-arrayness won't follow. |
| $$->insert($$->begin(), 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); |
| $$.setMatrix(4, 3); |
| } |
| | YUVCSCSTANDARDEXT { |
| if (!context->checkCanUseExtension(@1, TExtension::EXT_YUV_target)) |
| { |
| context->error(@1, "unsupported type", "yuvCscStandardEXT"); |
| } |
| $$.initialize(EbtYuvCscStandardEXT, @1); |
| } |
| | SAMPLER2D { |
| $$.initialize(EbtSampler2D, @1); |
| } |
| | SAMPLER3D { |
| $$.initialize(EbtSampler3D, @1); |
| } |
| | SAMPLERCUBE { |
| $$.initialize(EbtSamplerCube, @1); |
| } |
| | SAMPLER2DARRAY { |
| $$.initialize(EbtSampler2DArray, @1); |
| } |
| | SAMPLER2DMS { |
| $$.initialize(EbtSampler2DMS, @1); |
| } |
| | ISAMPLER2D { |
| $$.initialize(EbtISampler2D, @1); |
| } |
| | ISAMPLER3D { |
| $$.initialize(EbtISampler3D, @1); |
| } |
| | ISAMPLERCUBE { |
| $$.initialize(EbtISamplerCube, @1); |
| } |
| | ISAMPLER2DARRAY { |
| $$.initialize(EbtISampler2DArray, @1); |
| } |
| | ISAMPLER2DMS { |
| $$.initialize(EbtISampler2DMS, @1); |
| } |
| | USAMPLER2D { |
| $$.initialize(EbtUSampler2D, @1); |
| } |
| | USAMPLER3D { |
| $$.initialize(EbtUSampler3D, @1); |
| } |
| | USAMPLERCUBE { |
| $$.initialize(EbtUSamplerCube, @1); |
| } |
| | USAMPLER2DARRAY { |
| $$.initialize(EbtUSampler2DArray, @1); |
| } |
| | USAMPLER2DMS { |
| $$.initialize(EbtUSampler2DMS, @1); |
| } |
| | SAMPLER2DSHADOW { |
| $$.initialize(EbtSampler2DShadow, @1); |
| } |
| | SAMPLERCUBESHADOW { |
| $$.initialize(EbtSamplerCubeShadow, @1); |
| } |
| | SAMPLER2DARRAYSHADOW { |
| $$.initialize(EbtSampler2DArrayShadow, @1); |
| } |
| | SAMPLER_EXTERNAL_OES { |
| constexpr std::array<TExtension, 3u> extensions{ { TExtension::NV_EGL_stream_consumer_external, |
| TExtension::OES_EGL_image_external_essl3, |
| TExtension::OES_EGL_image_external } }; |
| if (!context->checkCanUseOneOfExtensions(@1, extensions)) |
| { |
| context->error(@1, "unsupported type", "samplerExternalOES"); |
| } |
| $$.initialize(EbtSamplerExternalOES, @1); |
| } |
| | SAMPLEREXTERNAL2DY2YEXT { |
| if (!context->checkCanUseExtension(@1, TExtension::EXT_YUV_target)) |
| { |
| context->error(@1, "unsupported type", "__samplerExternal2DY2YEXT"); |
| } |
| $$.initialize(EbtSamplerExternal2DY2YEXT, @1); |
| } |
| | SAMPLER2DRECT { |
| if (!context->checkCanUseExtension(@1, TExtension::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); |
| } |
| | ATOMICUINT { |
| $$.initialize(EbtAtomicCounter, @1); |
| } |
| | TYPE_NAME { |
| // This is for user defined type names. The lexical phase looked up the type. |
| TType& structure = static_cast<TVariable*>($1.symbol)->getType(); |
| $$.initializeStruct(structure.getStruct(), false, @1); |
| } |
| ; |
| |
| 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 { |
| $$ = context->addStructFieldList($1, @1); |
| } |
| | struct_declaration_list struct_declaration { |
| $$ = 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->parseStructDeclarator($1.string, @1); |
| } |
| | identifier array_specifier { |
| $$ = context->parseStructArrayDeclarator($1.string, @1, *($2), @2); |
| } |
| ; |
| |
| initializer |
| : assignment_expression { $$ = $1; } |
| ; |
| |
| declaration_statement |
| : declaration { $$ = $1; } |
| ; |
| |
| statement |
| : compound_statement_with_scope { $$ = $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_with_scope |
| : LEFT_BRACE RIGHT_BRACE { |
| $$ = new TIntermBlock(); |
| $$->setLine(@$); |
| } |
| | LEFT_BRACE { context->symbolTable.push(); } statement_list { context->symbolTable.pop(); } RIGHT_BRACE { |
| $3->setLine(@$); |
| $$ = $3; |
| } |
| ; |
| |
| statement_no_new_scope |
| : compound_statement_no_new_scope { $$ = $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(); $$ = $2; } |
| ; |
| |
| compound_statement_no_new_scope |
| // Statement that doesn't create a new scope for iteration_statement, function definition (scope is created for parameters) |
| : LEFT_BRACE RIGHT_BRACE { |
| $$ = new TIntermBlock(); |
| $$->setLine(@$); |
| } |
| | LEFT_BRACE statement_list RIGHT_BRACE { |
| $2->setLine(@$); |
| $$ = $2; |
| } |
| ; |
| |
| statement_list |
| : statement { |
| $$ = new TIntermBlock(); |
| $$->appendStatement($1); |
| } |
| | statement_list statement { |
| $$ = $1; |
| $$->appendStatement($2); |
| } |
| ; |
| |
| expression_statement |
| : SEMICOLON { $$ = context->addEmptyStatement(@$); } |
| | expression SEMICOLON { $$ = $1; } |
| ; |
| |
| selection_statement |
| : IF LEFT_PAREN expression RIGHT_PAREN selection_rest_statement { |
| $$ = context->addIfElse($3, $5, @1); |
| } |
| ; |
| |
| selection_rest_statement |
| : statement_with_scope ELSE statement_with_scope { |
| $$.node1 = $1; |
| $$.node2 = $3; |
| } |
| | statement_with_scope { |
| $$.node1 = $1; |
| $$.node2 = nullptr; |
| } |
| ; |
| |
| // Note that we've diverged from the spec grammar here a bit for the sake of simplicity. |
| // We're reusing compound_statement_with_scope instead of having separate rules for switch. |
| switch_statement |
| : SWITCH LEFT_PAREN expression RIGHT_PAREN { context->incrSwitchNestingLevel(); } compound_statement_with_scope { |
| $$ = context->addSwitch($3, $6, @1); |
| context->decrSwitchNestingLevel(); |
| } |
| ; |
| |
| case_label |
| : CASE constant_expression COLON { |
| $$ = context->addCase($2, @1); |
| } |
| | DEFAULT COLON { |
| $$ = context->addDefault(@1); |
| } |
| ; |
| |
| condition |
| : expression { |
| $$ = $1; |
| context->checkIsScalarBool($1->getLine(), $1); |
| } |
| | fully_specified_type identifier EQUAL initializer { |
| $$ = context->addConditionInitializer($1, *$2.string, $4, @2); |
| } |
| ; |
| |
| iteration_statement |
| : WHILE LEFT_PAREN { context->symbolTable.push(); context->incrLoopNestingLevel(); } condition RIGHT_PAREN statement_no_new_scope { |
| context->symbolTable.pop(); |
| $$ = context->addLoop(ELoopWhile, 0, $4, 0, $6, @1); |
| context->decrLoopNestingLevel(); |
| } |
| | DO { context->incrLoopNestingLevel(); } statement_with_scope WHILE LEFT_PAREN expression RIGHT_PAREN SEMICOLON { |
| $$ = context->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(); |
| $$ = context->addLoop(ELoopFor, $4, $5.node1, reinterpret_cast<TIntermTyped*>($5.node2), $7, @1); |
| context->decrLoopNestingLevel(); |
| } |
| ; |
| |
| for_init_statement |
| : expression_statement { |
| $$ = $1; |
| } |
| | declaration_statement { |
| $$ = $1; |
| } |
| ; |
| |
| conditionopt |
| : condition { |
| $$ = $1; |
| } |
| | /* May be null */ { |
| $$ = nullptr; |
| } |
| ; |
| |
| for_rest_statement |
| : conditionopt SEMICOLON { |
| $$.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 { |
| $$ = context->addBranch(EOpReturn, $2, @1); |
| } |
| | DISCARD SEMICOLON { |
| $$ = 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 { |
| $$ = $1; |
| } |
| ; |
| |
| function_definition |
| : function_prototype { |
| context->parseFunctionDefinitionHeader(@1, &($1.function), &($1.intermFunctionPrototype)); |
| } |
| compound_statement_no_new_scope { |
| $$ = context->addFunctionDefinition($1.intermFunctionPrototype, $3, @1); |
| } |
| ; |
| |
| %% |
| |
| int glslang_parse(TParseContext* context) { |
| return yyparse(context, context->getScanner()); |
| } |
