| /* |
| // |
| // Copyright (c) 2002-2013 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) 2002-2010 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! |
| |
| // 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: 4505) |
| #pragma warning(disable: 4701) |
| #endif |
| |
| #include "compiler/SymbolTable.h" |
| #include "compiler/ParseHelper.h" |
| #include "GLSLANG/ShaderLang.h" |
| |
| #define YYENABLE_NLS 0 |
| |
| #define YYLEX_PARAM context->scanner |
| %} |
| |
| %expect 1 /* One shift reduce conflict because of if | else */ |
| %pure-parser |
| %parse-param {TParseContext* context} |
| %locations |
| |
| %code requires { |
| #define YYLTYPE TSourceLoc |
| #define YYLTYPE_IS_DECLARED 1 |
| } |
| |
| %union { |
| struct { |
| union { |
| TString *string; |
| float f; |
| int i; |
| bool b; |
| }; |
| TSymbol* symbol; |
| } lex; |
| struct { |
| TOperator op; |
| union { |
| TIntermNode* intermNode; |
| TIntermNodePair nodePair; |
| TIntermTyped* intermTypedNode; |
| TIntermAggregate* intermAggregate; |
| }; |
| union { |
| TPublicType type; |
| TPrecision precision; |
| TQualifier qualifier; |
| TFunction* function; |
| TParameter param; |
| TField* field; |
| TFieldList* fieldList; |
| }; |
| } interm; |
| } |
| |
| %{ |
| extern int yylex(YYSTYPE* yylval, YYLTYPE* yylloc, void* yyscanner); |
| static void yyerror(YYLTYPE* yylloc, TParseContext* context, const char* reason); |
| |
| #define YYLLOC_DEFAULT(Current, Rhs, N) \ |
| do { \ |
| if (YYID(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->shaderType != SH_VERTEX_SHADER) { \ |
| context->error(L, " supported in vertex shaders only ", S); \ |
| context->recover(); \ |
| } \ |
| } |
| |
| #define FRAG_ONLY(S, L) { \ |
| if (context->shaderType != SH_FRAGMENT_SHADER) { \ |
| context->error(L, " supported in fragment shaders only ", S); \ |
| context->recover(); \ |
| } \ |
| } |
| %} |
| |
| %token <lex> INVARIANT HIGH_PRECISION MEDIUM_PRECISION LOW_PRECISION PRECISION |
| %token <lex> ATTRIBUTE CONST_QUAL BOOL_TYPE FLOAT_TYPE INT_TYPE |
| %token <lex> BREAK CONTINUE DO ELSE FOR IF DISCARD RETURN |
| %token <lex> BVEC2 BVEC3 BVEC4 IVEC2 IVEC3 IVEC4 VEC2 VEC3 VEC4 |
| %token <lex> MATRIX2 MATRIX3 MATRIX4 IN_QUAL OUT_QUAL INOUT_QUAL UNIFORM VARYING |
| %token <lex> STRUCT VOID_TYPE WHILE |
| %token <lex> SAMPLER2D SAMPLERCUBE SAMPLER_EXTERNAL_OES SAMPLER2DRECT |
| |
| %token <lex> IDENTIFIER TYPE_NAME FLOATCONSTANT INTCONSTANT BOOLCONSTANT |
| %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.intermNode> translation_unit function_definition |
| %type <interm.intermNode> statement simple_statement |
| %type <interm.intermAggregate> statement_list compound_statement |
| %type <interm.intermNode> declaration_statement selection_statement expression_statement |
| %type <interm.intermNode> declaration external_declaration |
| %type <interm.intermNode> for_init_statement compound_statement_no_new_scope |
| %type <interm.nodePair> selection_rest_statement for_rest_statement |
| %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.qualifier> parameter_qualifier |
| |
| %type <interm.precision> precision_qualifier |
| %type <interm.type> type_qualifier fully_specified_type type_specifier |
| %type <interm.type> type_specifier_no_prec type_specifier_nonarray |
| %type <interm.type> struct_specifier |
| %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 |
| |
| %start translation_unit |
| %% |
| |
| identifier |
| : IDENTIFIER |
| | TYPE_NAME |
| |
| variable_identifier |
| : IDENTIFIER { |
| // The symbol table search was done in the lexical phase |
| const TSymbol* symbol = $1.symbol; |
| const TVariable* variable; |
| if (symbol == 0) { |
| context->error(@1, "undeclared identifier", $1.string->c_str()); |
| context->recover(); |
| TType type(EbtFloat, EbpUndefined); |
| TVariable* fakeVariable = new TVariable($1.string, type); |
| context->symbolTable.insert(*fakeVariable); |
| variable = fakeVariable; |
| } else { |
| // This identifier can only be a variable type symbol |
| if (! symbol->isVariable()) { |
| context->error(@1, "variable expected", $1.string->c_str()); |
| context->recover(); |
| } |
| |
| variable = static_cast<const TVariable*>(symbol); |
| |
| if (context->isVariableBuiltIn(variable) && |
| !variable->getExtension().empty() && |
| context->extensionErrorCheck(@1, variable->getExtension())) { |
| context->recover(); |
| } |
| } |
| |
| // don't delete $1.string, it's used by error recovery, and the pool |
| // pop will reclaim the memory |
| |
| if (variable->getType().getQualifier() == EvqConst ) { |
| ConstantUnion* constArray = variable->getConstPointer(); |
| TType t(variable->getType()); |
| $$ = context->intermediate.addConstantUnion(constArray, t, @1); |
| } else |
| $$ = context->intermediate.addSymbol(variable->getUniqueId(), |
| variable->getName(), |
| variable->getType(), |
| @1); |
| } |
| ; |
| |
| primary_expression |
| : variable_identifier { |
| $$ = $1; |
| } |
| | INTCONSTANT { |
| // |
| // INT_TYPE is only 16-bit plus sign bit for vertex/fragment shaders, |
| // check for overflow for constants |
| // |
| if (abs($1.i) >= (1 << 16)) { |
| context->error(@1, " integer constant overflow", ""); |
| context->recover(); |
| } |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setIConst($1.i); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtInt, EbpUndefined, EvqConst), @1); |
| } |
| | FLOATCONSTANT { |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setFConst($1.f); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtFloat, EbpUndefined, EvqConst), @1); |
| } |
| | BOOLCONSTANT { |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst($1.b); |
| $$ = 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 { |
| if (!$1->isArray() && !$1->isMatrix() && !$1->isVector()) { |
| if ($1->getAsSymbolNode()) |
| context->error(@2, " left of '[' is not of type array, matrix, or vector ", $1->getAsSymbolNode()->getSymbol().c_str()); |
| else |
| context->error(@2, " left of '[' is not of type array, matrix, or vector ", "expression"); |
| context->recover(); |
| } |
| if ($3->getQualifier() == EvqConst) { |
| int index = $3->getAsConstantUnion()->getIConst(0); |
| if (index < 0) { |
| std::stringstream infoStream; |
| infoStream << index; |
| std::string info = infoStream.str(); |
| context->error(@3, "negative index", info.c_str()); |
| context->recover(); |
| index = 0; |
| } |
| if ($1->getType().getQualifier() == EvqConst) { |
| if ($1->isArray()) { // constant folding for arrays |
| $$ = context->addConstArrayNode(index, $1, @2); |
| } else if ($1->isVector()) { // constant folding for vectors |
| TVectorFields fields; |
| fields.num = 1; |
| fields.offsets[0] = index; // need to do it this way because v.xy sends fields integer array |
| $$ = context->addConstVectorNode(fields, $1, @2); |
| } else if ($1->isMatrix()) { // constant folding for matrices |
| $$ = context->addConstMatrixNode(index, $1, @2); |
| } |
| } else { |
| if ($1->isArray()) { |
| if (index >= $1->getType().getArraySize()) { |
| std::stringstream extraInfoStream; |
| extraInfoStream << "array index out of range '" << index << "'"; |
| std::string extraInfo = extraInfoStream.str(); |
| context->error(@2, "", "[", extraInfo.c_str()); |
| context->recover(); |
| index = $1->getType().getArraySize() - 1; |
| } |
| } else if (($1->isVector() || $1->isMatrix()) && $1->getType().getNominalSize() <= index) { |
| std::stringstream extraInfoStream; |
| extraInfoStream << "field selection out of range '" << index << "'"; |
| std::string extraInfo = extraInfoStream.str(); |
| context->error(@2, "", "[", extraInfo.c_str()); |
| context->recover(); |
| index = $1->getType().getNominalSize() - 1; |
| } |
| $3->getAsConstantUnion()->getUnionArrayPointer()->setIConst(index); |
| $$ = context->intermediate.addIndex(EOpIndexDirect, $1, $3, @2); |
| } |
| } else { |
| $$ = context->intermediate.addIndex(EOpIndexIndirect, $1, $3, @2); |
| } |
| if ($$ == 0) { |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setFConst(0.0f); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtFloat, EbpHigh, EvqConst), @2); |
| } else if ($1->isArray()) { |
| if ($1->getType().getStruct()) |
| $$->setType(TType($1->getType().getStruct())); |
| else |
| $$->setType(TType($1->getBasicType(), $1->getPrecision(), EvqTemporary, $1->getNominalSize(), $1->isMatrix())); |
| |
| if ($1->getType().getQualifier() == EvqConst) |
| $$->getTypePointer()->setQualifier(EvqConst); |
| } else if ($1->isMatrix()) { |
| TQualifier qualifier = $1->getType().getQualifier() == EvqConst ? EvqConst : EvqTemporary; |
| $$->setType(TType($1->getBasicType(), $1->getPrecision(), qualifier, $1->getNominalSize())); |
| } else if ($1->isVector()) { |
| TQualifier qualifier = $1->getType().getQualifier() == EvqConst ? EvqConst : EvqTemporary; |
| $$->setType(TType($1->getBasicType(), $1->getPrecision(), qualifier)); |
| } else { |
| $$->setType($1->getType()); |
| } |
| } |
| | function_call { |
| $$ = $1; |
| } |
| | postfix_expression DOT identifier { |
| if ($1->isArray()) { |
| context->error(@3, "cannot apply dot operator to an array", "."); |
| context->recover(); |
| } |
| |
| if ($1->isVector()) { |
| TVectorFields fields; |
| if (! context->parseVectorFields(*$3.string, $1->getNominalSize(), fields, @3)) { |
| fields.num = 1; |
| fields.offsets[0] = 0; |
| context->recover(); |
| } |
| |
| if ($1->getType().getQualifier() == EvqConst) { // constant folding for vector fields |
| $$ = context->addConstVectorNode(fields, $1, @3); |
| if ($$ == 0) { |
| context->recover(); |
| $$ = $1; |
| } |
| else |
| $$->setType(TType($1->getBasicType(), $1->getPrecision(), EvqConst, (int) (*$3.string).size())); |
| } else { |
| TString vectorString = *$3.string; |
| TIntermTyped* index = context->intermediate.addSwizzle(fields, @3); |
| $$ = context->intermediate.addIndex(EOpVectorSwizzle, $1, index, @2); |
| $$->setType(TType($1->getBasicType(), $1->getPrecision(), EvqTemporary, (int) vectorString.size())); |
| } |
| } else if ($1->isMatrix()) { |
| TMatrixFields fields; |
| if (! context->parseMatrixFields(*$3.string, $1->getNominalSize(), fields, @3)) { |
| fields.wholeRow = false; |
| fields.wholeCol = false; |
| fields.row = 0; |
| fields.col = 0; |
| context->recover(); |
| } |
| |
| if (fields.wholeRow || fields.wholeCol) { |
| context->error(@2, " non-scalar fields not implemented yet", "."); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setIConst(0); |
| TIntermTyped* index = context->intermediate.addConstantUnion(unionArray, TType(EbtInt, EbpUndefined, EvqConst), @3); |
| $$ = context->intermediate.addIndex(EOpIndexDirect, $1, index, @2); |
| $$->setType(TType($1->getBasicType(), $1->getPrecision(),EvqTemporary, $1->getNominalSize())); |
| } else { |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setIConst(fields.col * $1->getNominalSize() + fields.row); |
| TIntermTyped* index = context->intermediate.addConstantUnion(unionArray, TType(EbtInt, EbpUndefined, EvqConst), @3); |
| $$ = context->intermediate.addIndex(EOpIndexDirect, $1, index, @2); |
| $$->setType(TType($1->getBasicType(), $1->getPrecision())); |
| } |
| } else if ($1->getBasicType() == EbtStruct) { |
| bool fieldFound = false; |
| const TFieldList& fields = $1->getType().getStruct()->fields(); |
| unsigned int i; |
| for (i = 0; i < fields.size(); ++i) { |
| if (fields[i]->name() == *$3.string) { |
| fieldFound = true; |
| break; |
| } |
| } |
| if (fieldFound) { |
| if ($1->getType().getQualifier() == EvqConst) { |
| $$ = context->addConstStruct(*$3.string, $1, @2); |
| if ($$ == 0) { |
| context->recover(); |
| $$ = $1; |
| } |
| else { |
| $$->setType(*fields[i]->type()); |
| // change the qualifier of the return type, not of the structure field |
| // as the structure definition is shared between various structures. |
| $$->getTypePointer()->setQualifier(EvqConst); |
| } |
| } else { |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setIConst(i); |
| TIntermTyped* index = context->intermediate.addConstantUnion(unionArray, *fields[i]->type(), @3); |
| $$ = context->intermediate.addIndex(EOpIndexDirectStruct, $1, index, @2); |
| $$->setType(*fields[i]->type()); |
| } |
| } else { |
| context->error(@2, " no such field in structure", $3.string->c_str()); |
| context->recover(); |
| $$ = $1; |
| } |
| } else { |
| context->error(@2, " field selection requires structure, vector, or matrix on left hand side", $3.string->c_str()); |
| context->recover(); |
| $$ = $1; |
| } |
| // don't delete $3.string, it's from the pool |
| } |
| | postfix_expression INC_OP { |
| if (context->lValueErrorCheck(@2, "++", $1)) |
| context->recover(); |
| $$ = context->intermediate.addUnaryMath(EOpPostIncrement, $1, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->unaryOpError(@2, "++", $1->getCompleteString()); |
| context->recover(); |
| $$ = $1; |
| } |
| } |
| | postfix_expression DEC_OP { |
| if (context->lValueErrorCheck(@2, "--", $1)) |
| context->recover(); |
| $$ = context->intermediate.addUnaryMath(EOpPostDecrement, $1, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->unaryOpError(@2, "--", $1->getCompleteString()); |
| context->recover(); |
| $$ = $1; |
| } |
| } |
| ; |
| |
| integer_expression |
| : expression { |
| if (context->integerErrorCheck($1, "[]")) |
| context->recover(); |
| $$ = $1; |
| } |
| ; |
| |
| function_call |
| : function_call_or_method { |
| TFunction* fnCall = $1.function; |
| TOperator op = fnCall->getBuiltInOp(); |
| |
| if (op != EOpNull) |
| { |
| // |
| // Then this should be a constructor. |
| // Don't go through the symbol table for constructors. |
| // Their parameters will be verified algorithmically. |
| // |
| TType type(EbtVoid, EbpUndefined); // use this to get the type back |
| if (context->constructorErrorCheck(@1, $1.intermNode, *fnCall, op, &type)) { |
| $$ = 0; |
| } else { |
| // |
| // It's a constructor, of type 'type'. |
| // |
| $$ = context->addConstructor($1.intermNode, &type, op, fnCall, @1); |
| } |
| |
| if ($$ == 0) { |
| context->recover(); |
| $$ = context->intermediate.setAggregateOperator(0, op, @1); |
| } |
| $$->setType(type); |
| } else { |
| // |
| // Not a constructor. Find it in the symbol table. |
| // |
| const TFunction* fnCandidate; |
| bool builtIn; |
| fnCandidate = context->findFunction(@1, fnCall, &builtIn); |
| if (fnCandidate) { |
| // |
| // A declared function. |
| // |
| if (builtIn && !fnCandidate->getExtension().empty() && |
| context->extensionErrorCheck(@1, fnCandidate->getExtension())) { |
| context->recover(); |
| } |
| op = fnCandidate->getBuiltInOp(); |
| if (builtIn && op != EOpNull) { |
| // |
| // A function call mapped to a built-in operation. |
| // |
| if (fnCandidate->getParamCount() == 1) { |
| // |
| // Treat it like a built-in unary operator. |
| // |
| $$ = context->intermediate.addUnaryMath(op, $1.intermNode, @1, context->symbolTable); |
| if ($$ == 0) { |
| std::stringstream extraInfoStream; |
| extraInfoStream << "built in unary operator function. Type: " << static_cast<TIntermTyped*>($1.intermNode)->getCompleteString(); |
| std::string extraInfo = extraInfoStream.str(); |
| context->error($1.intermNode->getLine(), " wrong operand type", "Internal Error", extraInfo.c_str()); |
| YYERROR; |
| } |
| } else { |
| $$ = context->intermediate.setAggregateOperator($1.intermAggregate, op, @1); |
| } |
| } else { |
| // This is a real function call |
| |
| $$ = context->intermediate.setAggregateOperator($1.intermAggregate, EOpFunctionCall, @1); |
| $$->setType(fnCandidate->getReturnType()); |
| |
| // this is how we know whether the given function is a builtIn function or a user defined function |
| // if builtIn == false, it's a userDefined -> could be an overloaded builtIn function also |
| // if builtIn == true, it's definitely a builtIn function with EOpNull |
| if (!builtIn) |
| $$->getAsAggregate()->setUserDefined(); |
| $$->getAsAggregate()->setName(fnCandidate->getMangledName()); |
| |
| TQualifier qual; |
| for (size_t i = 0; i < fnCandidate->getParamCount(); ++i) { |
| qual = fnCandidate->getParam(i).type->getQualifier(); |
| if (qual == EvqOut || qual == EvqInOut) { |
| if (context->lValueErrorCheck($$->getLine(), "assign", $$->getAsAggregate()->getSequence()[i]->getAsTyped())) { |
| context->error($1.intermNode->getLine(), "Constant value cannot be passed for 'out' or 'inout' parameters.", "Error"); |
| context->recover(); |
| } |
| } |
| } |
| } |
| $$->setType(fnCandidate->getReturnType()); |
| } else { |
| // error message was put out by PaFindFunction() |
| // Put on a dummy node for error recovery |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setFConst(0.0f); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtFloat, EbpUndefined, EvqConst), @1); |
| context->recover(); |
| } |
| } |
| delete fnCall; |
| } |
| ; |
| |
| function_call_or_method |
| : function_call_generic { |
| $$ = $1; |
| } |
| | postfix_expression DOT function_call_generic { |
| context->error(@3, "methods are not supported", ""); |
| context->recover(); |
| $$ = $3; |
| } |
| ; |
| |
| 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 { |
| $$.function = $1; |
| $$.intermNode = 0; |
| } |
| | function_call_header { |
| $$.function = $1; |
| $$.intermNode = 0; |
| } |
| ; |
| |
| function_call_header_with_parameters |
| : function_call_header assignment_expression { |
| TParameter param = { 0, new TType($2->getType()) }; |
| $1->addParameter(param); |
| $$.function = $1; |
| $$.intermNode = $2; |
| } |
| | function_call_header_with_parameters COMMA assignment_expression { |
| TParameter param = { 0, new TType($3->getType()) }; |
| $1.function->addParameter(param); |
| $$.function = $1.function; |
| $$.intermNode = context->intermediate.growAggregate($1.intermNode, $3, @2); |
| } |
| ; |
| |
| function_call_header |
| : function_identifier LEFT_PAREN { |
| $$ = $1; |
| } |
| ; |
| |
| // Grammar Note: Constructors look like functions, but are recognized as types. |
| |
| function_identifier |
| : type_specifier_nonarray { |
| // |
| // Constructor |
| // |
| TOperator op = EOpNull; |
| if ($1.userDef) { |
| op = EOpConstructStruct; |
| } else { |
| switch ($1.type) { |
| case EbtFloat: |
| if ($1.matrix) { |
| switch($1.size) { |
| case 2: op = EOpConstructMat2; break; |
| case 3: op = EOpConstructMat3; break; |
| case 4: op = EOpConstructMat4; break; |
| } |
| } else { |
| switch($1.size) { |
| case 1: op = EOpConstructFloat; break; |
| case 2: op = EOpConstructVec2; break; |
| case 3: op = EOpConstructVec3; break; |
| case 4: op = EOpConstructVec4; break; |
| } |
| } |
| break; |
| case EbtInt: |
| switch($1.size) { |
| case 1: op = EOpConstructInt; break; |
| case 2: op = EOpConstructIVec2; break; |
| case 3: op = EOpConstructIVec3; break; |
| case 4: op = EOpConstructIVec4; break; |
| } |
| break; |
| case EbtBool: |
| switch($1.size) { |
| case 1: op = EOpConstructBool; break; |
| case 2: op = EOpConstructBVec2; break; |
| case 3: op = EOpConstructBVec3; break; |
| case 4: op = EOpConstructBVec4; break; |
| } |
| break; |
| default: break; |
| } |
| if (op == EOpNull) { |
| context->error(@1, "cannot construct this type", getBasicString($1.type)); |
| context->recover(); |
| $1.type = EbtFloat; |
| op = EOpConstructFloat; |
| } |
| } |
| TString tempString; |
| TType type($1); |
| TFunction *function = new TFunction(&tempString, type, op); |
| $$ = function; |
| } |
| | IDENTIFIER { |
| if (context->reservedErrorCheck(@1, *$1.string)) |
| context->recover(); |
| TType type(EbtVoid, EbpUndefined); |
| TFunction *function = new TFunction($1.string, type); |
| $$ = function; |
| } |
| ; |
| |
| unary_expression |
| : postfix_expression { |
| $$ = $1; |
| } |
| | INC_OP unary_expression { |
| if (context->lValueErrorCheck(@1, "++", $2)) |
| context->recover(); |
| $$ = context->intermediate.addUnaryMath(EOpPreIncrement, $2, @1, context->symbolTable); |
| if ($$ == 0) { |
| context->unaryOpError(@1, "++", $2->getCompleteString()); |
| context->recover(); |
| $$ = $2; |
| } |
| } |
| | DEC_OP unary_expression { |
| if (context->lValueErrorCheck(@1, "--", $2)) |
| context->recover(); |
| $$ = context->intermediate.addUnaryMath(EOpPreDecrement, $2, @1, context->symbolTable); |
| if ($$ == 0) { |
| context->unaryOpError(@1, "--", $2->getCompleteString()); |
| context->recover(); |
| $$ = $2; |
| } |
| } |
| | unary_operator unary_expression { |
| if ($1.op != EOpNull) { |
| $$ = context->intermediate.addUnaryMath($1.op, $2, @1, context->symbolTable); |
| if ($$ == 0) { |
| const char* errorOp = ""; |
| switch($1.op) { |
| case EOpNegative: errorOp = "-"; break; |
| case EOpLogicalNot: errorOp = "!"; break; |
| default: break; |
| } |
| context->unaryOpError(@1, errorOp, $2->getCompleteString()); |
| context->recover(); |
| $$ = $2; |
| } |
| } else |
| $$ = $2; |
| } |
| ; |
| // Grammar Note: No traditional style type casts. |
| |
| unary_operator |
| : PLUS { $$.op = EOpNull; } |
| | DASH { $$.op = EOpNegative; } |
| | BANG { $$.op = EOpLogicalNot; } |
| ; |
| // Grammar Note: No '*' or '&' unary ops. Pointers are not supported. |
| |
| multiplicative_expression |
| : unary_expression { $$ = $1; } |
| | multiplicative_expression STAR unary_expression { |
| $$ = context->intermediate.addBinaryMath(EOpMul, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "*", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| $$ = $1; |
| } |
| } |
| | multiplicative_expression SLASH unary_expression { |
| $$ = context->intermediate.addBinaryMath(EOpDiv, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "/", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| $$ = $1; |
| } |
| } |
| ; |
| |
| additive_expression |
| : multiplicative_expression { $$ = $1; } |
| | additive_expression PLUS multiplicative_expression { |
| $$ = context->intermediate.addBinaryMath(EOpAdd, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "+", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| $$ = $1; |
| } |
| } |
| | additive_expression DASH multiplicative_expression { |
| $$ = context->intermediate.addBinaryMath(EOpSub, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "-", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| $$ = $1; |
| } |
| } |
| ; |
| |
| shift_expression |
| : additive_expression { $$ = $1; } |
| ; |
| |
| relational_expression |
| : shift_expression { $$ = $1; } |
| | relational_expression LEFT_ANGLE shift_expression { |
| $$ = context->intermediate.addBinaryMath(EOpLessThan, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "<", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| | relational_expression RIGHT_ANGLE shift_expression { |
| $$ = context->intermediate.addBinaryMath(EOpGreaterThan, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, ">", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| | relational_expression LE_OP shift_expression { |
| $$ = context->intermediate.addBinaryMath(EOpLessThanEqual, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "<=", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| | relational_expression GE_OP shift_expression { |
| $$ = context->intermediate.addBinaryMath(EOpGreaterThanEqual, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, ">=", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| ; |
| |
| equality_expression |
| : relational_expression { $$ = $1; } |
| | equality_expression EQ_OP relational_expression { |
| $$ = context->intermediate.addBinaryMath(EOpEqual, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "==", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| | equality_expression NE_OP relational_expression { |
| $$ = context->intermediate.addBinaryMath(EOpNotEqual, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "!=", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| ; |
| |
| and_expression |
| : equality_expression { $$ = $1; } |
| ; |
| |
| exclusive_or_expression |
| : and_expression { $$ = $1; } |
| ; |
| |
| inclusive_or_expression |
| : exclusive_or_expression { $$ = $1; } |
| ; |
| |
| logical_and_expression |
| : inclusive_or_expression { $$ = $1; } |
| | logical_and_expression AND_OP inclusive_or_expression { |
| $$ = context->intermediate.addBinaryMath(EOpLogicalAnd, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "&&", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| ; |
| |
| logical_xor_expression |
| : logical_and_expression { $$ = $1; } |
| | logical_xor_expression XOR_OP logical_and_expression { |
| $$ = context->intermediate.addBinaryMath(EOpLogicalXor, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "^^", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| ; |
| |
| logical_or_expression |
| : logical_xor_expression { $$ = $1; } |
| | logical_or_expression OR_OP logical_xor_expression { |
| $$ = context->intermediate.addBinaryMath(EOpLogicalOr, $1, $3, @2, context->symbolTable); |
| if ($$ == 0) { |
| context->binaryOpError(@2, "||", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| ConstantUnion *unionArray = new ConstantUnion[1]; |
| unionArray->setBConst(false); |
| $$ = context->intermediate.addConstantUnion(unionArray, TType(EbtBool, EbpUndefined, EvqConst), @2); |
| } |
| } |
| ; |
| |
| conditional_expression |
| : logical_or_expression { $$ = $1; } |
| | logical_or_expression QUESTION expression COLON assignment_expression { |
| if (context->boolErrorCheck(@2, $1)) |
| context->recover(); |
| |
| $$ = context->intermediate.addSelection($1, $3, $5, @2); |
| if ($3->getType() != $5->getType()) |
| $$ = 0; |
| |
| if ($$ == 0) { |
| context->binaryOpError(@2, ":", $3->getCompleteString(), $5->getCompleteString()); |
| context->recover(); |
| $$ = $5; |
| } |
| } |
| ; |
| |
| assignment_expression |
| : conditional_expression { $$ = $1; } |
| | unary_expression assignment_operator assignment_expression { |
| if (context->lValueErrorCheck(@2, "assign", $1)) |
| context->recover(); |
| $$ = context->intermediate.addAssign($2.op, $1, $3, @2); |
| if ($$ == 0) { |
| context->assignError(@2, "assign", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| $$ = $1; |
| } |
| } |
| ; |
| |
| assignment_operator |
| : EQUAL { $$.op = EOpAssign; } |
| | MUL_ASSIGN { $$.op = EOpMulAssign; } |
| | DIV_ASSIGN { $$.op = EOpDivAssign; } |
| | ADD_ASSIGN { $$.op = EOpAddAssign; } |
| | SUB_ASSIGN { $$.op = EOpSubAssign; } |
| ; |
| |
| expression |
| : assignment_expression { |
| $$ = $1; |
| } |
| | expression COMMA assignment_expression { |
| $$ = context->intermediate.addComma($1, $3, @2); |
| if ($$ == 0) { |
| context->binaryOpError(@2, ",", $1->getCompleteString(), $3->getCompleteString()); |
| context->recover(); |
| $$ = $3; |
| } |
| } |
| ; |
| |
| constant_expression |
| : conditional_expression { |
| if (context->constErrorCheck($1)) |
| context->recover(); |
| $$ = $1; |
| } |
| ; |
| |
| declaration |
| : function_prototype SEMICOLON { |
| TFunction &function = *($1.function); |
| |
| TIntermAggregate *prototype = new TIntermAggregate; |
| prototype->setType(function.getReturnType()); |
| prototype->setName(function.getName()); |
| |
| for (size_t i = 0; i < function.getParamCount(); i++) |
| { |
| const TParameter ¶m = function.getParam(i); |
| if (param.name != 0) |
| { |
| TVariable variable(param.name, *param.type); |
| |
| prototype = context->intermediate.growAggregate(prototype, context->intermediate.addSymbol(variable.getUniqueId(), variable.getName(), variable.getType(), @1), @1); |
| } |
| else |
| { |
| prototype = context->intermediate.growAggregate(prototype, context->intermediate.addSymbol(0, "", *param.type, @1), @1); |
| } |
| } |
| |
| prototype->setOp(EOpPrototype); |
| $$ = prototype; |
| |
| context->symbolTable.pop(); |
| } |
| | init_declarator_list SEMICOLON { |
| if ($1.intermAggregate) |
| $1.intermAggregate->setOp(EOpDeclaration); |
| $$ = $1.intermAggregate; |
| } |
| | PRECISION precision_qualifier type_specifier_no_prec SEMICOLON { |
| if (($2 == EbpHigh) && (context->shaderType == SH_FRAGMENT_SHADER) && !context->fragmentPrecisionHigh) { |
| context->error(@1, "precision is not supported in fragment shader", "highp"); |
| context->recover(); |
| } |
| if (!context->symbolTable.setDefaultPrecision( $3, $2 )) { |
| context->error(@1, "illegal type argument for default precision qualifier", getBasicString($3.type)); |
| context->recover(); |
| } |
| $$ = 0; |
| } |
| ; |
| |
| function_prototype |
| : function_declarator RIGHT_PAREN { |
| // |
| // Multiple declarations of the same function are allowed. |
| // |
| // If this is a definition, the definition production code will check for redefinitions |
| // (we don't know at this point if it's a definition or not). |
| // |
| // Redeclarations are allowed. But, return types and parameter qualifiers must match. |
| // |
| TFunction* prevDec = static_cast<TFunction*>(context->symbolTable.find($1->getMangledName())); |
| if (prevDec) { |
| if (prevDec->getReturnType() != $1->getReturnType()) { |
| context->error(@2, "overloaded functions must have the same return type", $1->getReturnType().getBasicString()); |
| context->recover(); |
| } |
| for (size_t i = 0; i < prevDec->getParamCount(); ++i) { |
| if (prevDec->getParam(i).type->getQualifier() != $1->getParam(i).type->getQualifier()) { |
| context->error(@2, "overloaded functions must have the same parameter qualifiers", $1->getParam(i).type->getQualifierString()); |
| context->recover(); |
| } |
| } |
| } |
| |
| // |
| // If this is a redeclaration, it could also be a definition, |
| // in which case, we want to use the variable names from this one, and not the one that's |
| // being redeclared. So, pass back up this declaration, not the one in the symbol table. |
| // |
| $$.function = $1; |
| |
| // We're at the inner scope level of the function's arguments and body statement. |
| // Add the function prototype to the surrounding scope instead. |
| context->symbolTable.getOuterLevel()->insert(*$$.function); |
| } |
| ; |
| |
| function_declarator |
| : function_header { |
| $$ = $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); |
| 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"); |
| context->recover(); |
| delete $3.param.type; |
| } else { |
| // Add the parameter |
| $$ = $1; |
| $1->addParameter($3.param); |
| } |
| } |
| ; |
| |
| function_header |
| : fully_specified_type IDENTIFIER LEFT_PAREN { |
| if ($1.qualifier != EvqGlobal && $1.qualifier != EvqTemporary) { |
| context->error(@2, "no qualifiers allowed for function return", getQualifierString($1.qualifier)); |
| context->recover(); |
| } |
| // make sure a sampler is not involved as well... |
| if (context->structQualifierErrorCheck(@2, $1)) |
| context->recover(); |
| |
| // Add the function as a prototype after parsing it (we do not support recursion) |
| TFunction *function; |
| TType type($1); |
| function = new TFunction($2.string, type); |
| $$ = function; |
| |
| context->symbolTable.push(); |
| } |
| ; |
| |
| parameter_declarator |
| // Type + name |
| : type_specifier identifier { |
| if ($1.type == EbtVoid) { |
| context->error(@2, "illegal use of type 'void'", $2.string->c_str()); |
| context->recover(); |
| } |
| if (context->reservedErrorCheck(@2, *$2.string)) |
| context->recover(); |
| TParameter param = {$2.string, new TType($1)}; |
| $$.param = param; |
| } |
| | type_specifier identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { |
| // Check that we can make an array out of this type |
| if (context->arrayTypeErrorCheck(@3, $1)) |
| context->recover(); |
| |
| if (context->reservedErrorCheck(@2, *$2.string)) |
| context->recover(); |
| |
| int size; |
| if (context->arraySizeErrorCheck(@3, $4, size)) |
| context->recover(); |
| $1.setArray(true, size); |
| |
| TType* type = new TType($1); |
| TParameter param = { $2.string, type }; |
| $$.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_qualifier parameter_declarator { |
| $$ = $3; |
| if (context->paramErrorCheck(@3, $1.qualifier, $2, $$.param.type)) |
| context->recover(); |
| } |
| | parameter_qualifier parameter_declarator { |
| $$ = $2; |
| if (context->parameterSamplerErrorCheck(@2, $1, *$2.param.type)) |
| context->recover(); |
| if (context->paramErrorCheck(@2, EvqTemporary, $1, $$.param.type)) |
| context->recover(); |
| } |
| // |
| // Only type |
| // |
| | type_qualifier parameter_qualifier parameter_type_specifier { |
| $$ = $3; |
| if (context->paramErrorCheck(@3, $1.qualifier, $2, $$.param.type)) |
| context->recover(); |
| } |
| | parameter_qualifier parameter_type_specifier { |
| $$ = $2; |
| if (context->parameterSamplerErrorCheck(@2, $1, *$2.param.type)) |
| context->recover(); |
| if (context->paramErrorCheck(@2, EvqTemporary, $1, $$.param.type)) |
| context->recover(); |
| } |
| ; |
| |
| parameter_qualifier |
| : /* empty */ { |
| $$ = EvqIn; |
| } |
| | IN_QUAL { |
| $$ = EvqIn; |
| } |
| | OUT_QUAL { |
| $$ = EvqOut; |
| } |
| | INOUT_QUAL { |
| $$ = EvqInOut; |
| } |
| ; |
| |
| parameter_type_specifier |
| : type_specifier { |
| TParameter param = { 0, new TType($1) }; |
| $$.param = param; |
| } |
| ; |
| |
| init_declarator_list |
| : single_declaration { |
| $$ = $1; |
| } |
| | init_declarator_list COMMA identifier { |
| if ($1.type.type == EbtInvariant && !$3.symbol) |
| { |
| context->error(@3, "undeclared identifier declared as invariant", $3.string->c_str()); |
| context->recover(); |
| } |
| |
| TIntermSymbol* symbol = context->intermediate.addSymbol(0, *$3.string, TType($1.type), @3); |
| $$.intermAggregate = context->intermediate.growAggregate($1.intermNode, symbol, @3); |
| |
| if (context->structQualifierErrorCheck(@3, $$.type)) |
| context->recover(); |
| |
| if (context->nonInitConstErrorCheck(@3, *$3.string, $$.type, false)) |
| context->recover(); |
| |
| TVariable* variable = 0; |
| if (context->nonInitErrorCheck(@3, *$3.string, $$.type, variable)) |
| context->recover(); |
| if (symbol && variable) |
| symbol->setId(variable->getUniqueId()); |
| } |
| | init_declarator_list COMMA identifier LEFT_BRACKET RIGHT_BRACKET { |
| if (context->structQualifierErrorCheck(@3, $1.type)) |
| context->recover(); |
| |
| if (context->nonInitConstErrorCheck(@3, *$3.string, $1.type, true)) |
| context->recover(); |
| |
| $$ = $1; |
| |
| if (context->arrayTypeErrorCheck(@4, $1.type) || context->arrayQualifierErrorCheck(@4, $1.type)) |
| context->recover(); |
| else { |
| $1.type.setArray(true); |
| TVariable* variable; |
| if (context->arrayErrorCheck(@4, *$3.string, $1.type, variable)) |
| context->recover(); |
| } |
| } |
| | init_declarator_list COMMA identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { |
| if (context->structQualifierErrorCheck(@3, $1.type)) |
| context->recover(); |
| |
| if (context->nonInitConstErrorCheck(@3, *$3.string, $1.type, true)) |
| context->recover(); |
| |
| $$ = $1; |
| |
| if (context->arrayTypeErrorCheck(@4, $1.type) || context->arrayQualifierErrorCheck(@4, $1.type)) |
| context->recover(); |
| else { |
| int size; |
| if (context->arraySizeErrorCheck(@4, $5, size)) |
| context->recover(); |
| $1.type.setArray(true, size); |
| TVariable* variable = 0; |
| if (context->arrayErrorCheck(@4, *$3.string, $1.type, variable)) |
| context->recover(); |
| TType type = TType($1.type); |
| type.setArraySize(size); |
| $$.intermAggregate = context->intermediate.growAggregate($1.intermNode, context->intermediate.addSymbol(variable ? variable->getUniqueId() : 0, *$3.string, type, @3), @3); |
| } |
| } |
| | init_declarator_list COMMA identifier EQUAL initializer { |
| if (context->structQualifierErrorCheck(@3, $1.type)) |
| context->recover(); |
| |
| $$ = $1; |
| |
| TIntermNode* intermNode; |
| if (!context->executeInitializer(@3, *$3.string, $1.type, $5, intermNode)) { |
| // |
| // build the intermediate representation |
| // |
| if (intermNode) |
| $$.intermAggregate = context->intermediate.growAggregate($1.intermNode, intermNode, @4); |
| else |
| $$.intermAggregate = $1.intermAggregate; |
| } else { |
| context->recover(); |
| $$.intermAggregate = 0; |
| } |
| } |
| ; |
| |
| single_declaration |
| : fully_specified_type { |
| $$.type = $1; |
| $$.intermAggregate = context->intermediate.makeAggregate(context->intermediate.addSymbol(0, "", TType($1), @1), @1); |
| } |
| | fully_specified_type identifier { |
| TIntermSymbol* symbol = context->intermediate.addSymbol(0, *$2.string, TType($1), @2); |
| $$.intermAggregate = context->intermediate.makeAggregate(symbol, @2); |
| |
| if (context->structQualifierErrorCheck(@2, $$.type)) |
| context->recover(); |
| |
| if (context->nonInitConstErrorCheck(@2, *$2.string, $$.type, false)) |
| context->recover(); |
| |
| $$.type = $1; |
| |
| TVariable* variable = 0; |
| if (context->nonInitErrorCheck(@2, *$2.string, $$.type, variable)) |
| context->recover(); |
| if (variable && symbol) |
| symbol->setId(variable->getUniqueId()); |
| } |
| | fully_specified_type identifier LEFT_BRACKET RIGHT_BRACKET { |
| context->error(@2, "unsized array declarations not supported", $2.string->c_str()); |
| context->recover(); |
| |
| TIntermSymbol* symbol = context->intermediate.addSymbol(0, *$2.string, TType($1), @2); |
| $$.intermAggregate = context->intermediate.makeAggregate(symbol, @2); |
| $$.type = $1; |
| } |
| | fully_specified_type identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { |
| TType type = TType($1); |
| int size; |
| if (context->arraySizeErrorCheck(@2, $4, size)) |
| context->recover(); |
| type.setArraySize(size); |
| TIntermSymbol* symbol = context->intermediate.addSymbol(0, *$2.string, type, @2); |
| $$.intermAggregate = context->intermediate.makeAggregate(symbol, @2); |
| |
| if (context->structQualifierErrorCheck(@2, $1)) |
| context->recover(); |
| |
| if (context->nonInitConstErrorCheck(@2, *$2.string, $1, true)) |
| context->recover(); |
| |
| $$.type = $1; |
| |
| if (context->arrayTypeErrorCheck(@3, $1) || context->arrayQualifierErrorCheck(@3, $1)) |
| context->recover(); |
| else { |
| int size; |
| if (context->arraySizeErrorCheck(@3, $4, size)) |
| context->recover(); |
| |
| $1.setArray(true, size); |
| TVariable* variable = 0; |
| if (context->arrayErrorCheck(@3, *$2.string, $1, variable)) |
| context->recover(); |
| if (variable && symbol) |
| symbol->setId(variable->getUniqueId()); |
| } |
| } |
| | fully_specified_type identifier EQUAL initializer { |
| if (context->structQualifierErrorCheck(@2, $1)) |
| context->recover(); |
| |
| $$.type = $1; |
| |
| TIntermNode* intermNode; |
| if (!context->executeInitializer(@2, *$2.string, $1, $4, intermNode)) { |
| // |
| // Build intermediate representation |
| // |
| if(intermNode) |
| $$.intermAggregate = context->intermediate.makeAggregate(intermNode, @3); |
| else |
| $$.intermAggregate = 0; |
| } else { |
| context->recover(); |
| $$.intermAggregate = 0; |
| } |
| } |
| | INVARIANT IDENTIFIER { |
| VERTEX_ONLY("invariant declaration", @1); |
| if (context->globalErrorCheck(@1, context->symbolTable.atGlobalLevel(), "invariant varying")) |
| context->recover(); |
| $$.type.setBasic(EbtInvariant, EvqInvariantVaryingOut, @2); |
| if (!$2.symbol) |
| { |
| context->error(@2, "undeclared identifier declared as invariant", $2.string->c_str()); |
| context->recover(); |
| |
| $$.intermAggregate = 0; |
| } |
| else |
| { |
| TIntermSymbol *symbol = context->intermediate.addSymbol(0, *$2.string, TType($$.type), @2); |
| $$.intermAggregate = context->intermediate.makeAggregate(symbol, @2); |
| } |
| } |
| ; |
| |
| fully_specified_type |
| : type_specifier { |
| $$ = $1; |
| |
| if ($1.array) { |
| context->error(@1, "not supported", "first-class array"); |
| context->recover(); |
| $1.setArray(false); |
| } |
| } |
| | type_qualifier type_specifier { |
| if ($2.array) { |
| context->error(@2, "not supported", "first-class array"); |
| context->recover(); |
| $2.setArray(false); |
| } |
| |
| if ($1.qualifier == EvqAttribute && |
| ($2.type == EbtBool || $2.type == EbtInt)) { |
| context->error(@2, "cannot be bool or int", getQualifierString($1.qualifier)); |
| context->recover(); |
| } |
| if (($1.qualifier == EvqVaryingIn || $1.qualifier == EvqVaryingOut) && |
| ($2.type == EbtBool || $2.type == EbtInt)) { |
| context->error(@2, "cannot be bool or int", getQualifierString($1.qualifier)); |
| context->recover(); |
| } |
| $$ = $2; |
| $$.qualifier = $1.qualifier; |
| } |
| ; |
| |
| type_qualifier |
| : CONST_QUAL { |
| $$.setBasic(EbtVoid, EvqConst, @1); |
| } |
| | ATTRIBUTE { |
| VERTEX_ONLY("attribute", @1); |
| if (context->globalErrorCheck(@1, context->symbolTable.atGlobalLevel(), "attribute")) |
| context->recover(); |
| $$.setBasic(EbtVoid, EvqAttribute, @1); |
| } |
| | VARYING { |
| if (context->globalErrorCheck(@1, context->symbolTable.atGlobalLevel(), "varying")) |
| context->recover(); |
| if (context->shaderType == SH_VERTEX_SHADER) |
| $$.setBasic(EbtVoid, EvqVaryingOut, @1); |
| else |
| $$.setBasic(EbtVoid, EvqVaryingIn, @1); |
| } |
| | INVARIANT VARYING { |
| if (context->globalErrorCheck(@1, context->symbolTable.atGlobalLevel(), "invariant varying")) |
| context->recover(); |
| if (context->shaderType == SH_VERTEX_SHADER) |
| $$.setBasic(EbtVoid, EvqInvariantVaryingOut, @1); |
| else |
| $$.setBasic(EbtVoid, EvqInvariantVaryingIn, @1); |
| } |
| | UNIFORM { |
| if (context->globalErrorCheck(@1, context->symbolTable.atGlobalLevel(), "uniform")) |
| context->recover(); |
| $$.setBasic(EbtVoid, EvqUniform, @1); |
| } |
| ; |
| |
| type_specifier |
| : type_specifier_no_prec { |
| $$ = $1; |
| |
| if ($$.precision == EbpUndefined) { |
| $$.precision = context->symbolTable.getDefaultPrecision($1.type); |
| if (context->precisionErrorCheck(@1, $$.precision, $1.type)) { |
| context->recover(); |
| } |
| } |
| } |
| | precision_qualifier type_specifier_no_prec { |
| $$ = $2; |
| $$.precision = $1; |
| } |
| ; |
| |
| precision_qualifier |
| : HIGH_PRECISION { |
| $$ = EbpHigh; |
| } |
| | MEDIUM_PRECISION { |
| $$ = EbpMedium; |
| } |
| | LOW_PRECISION { |
| $$ = EbpLow; |
| } |
| ; |
| |
| type_specifier_no_prec |
| : type_specifier_nonarray { |
| $$ = $1; |
| } |
| | type_specifier_nonarray LEFT_BRACKET constant_expression RIGHT_BRACKET { |
| $$ = $1; |
| |
| if (context->arrayTypeErrorCheck(@2, $1)) |
| context->recover(); |
| else { |
| int size; |
| if (context->arraySizeErrorCheck(@2, $3, size)) |
| context->recover(); |
| $$.setArray(true, size); |
| } |
| } |
| ; |
| |
| type_specifier_nonarray |
| : VOID_TYPE { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtVoid, qual, @1); |
| } |
| | FLOAT_TYPE { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtFloat, qual, @1); |
| } |
| | INT_TYPE { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtInt, qual, @1); |
| } |
| | BOOL_TYPE { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtBool, qual, @1); |
| } |
| | VEC2 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtFloat, qual, @1); |
| $$.setAggregate(2); |
| } |
| | VEC3 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtFloat, qual, @1); |
| $$.setAggregate(3); |
| } |
| | VEC4 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtFloat, qual, @1); |
| $$.setAggregate(4); |
| } |
| | BVEC2 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtBool, qual, @1); |
| $$.setAggregate(2); |
| } |
| | BVEC3 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtBool, qual, @1); |
| $$.setAggregate(3); |
| } |
| | BVEC4 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtBool, qual, @1); |
| $$.setAggregate(4); |
| } |
| | IVEC2 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtInt, qual, @1); |
| $$.setAggregate(2); |
| } |
| | IVEC3 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtInt, qual, @1); |
| $$.setAggregate(3); |
| } |
| | IVEC4 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtInt, qual, @1); |
| $$.setAggregate(4); |
| } |
| | MATRIX2 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtFloat, qual, @1); |
| $$.setAggregate(2, true); |
| } |
| | MATRIX3 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtFloat, qual, @1); |
| $$.setAggregate(3, true); |
| } |
| | MATRIX4 { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtFloat, qual, @1); |
| $$.setAggregate(4, true); |
| } |
| | SAMPLER2D { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtSampler2D, qual, @1); |
| } |
| | SAMPLERCUBE { |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtSamplerCube, qual, @1); |
| } |
| | SAMPLER_EXTERNAL_OES { |
| if (!context->supportsExtension("GL_OES_EGL_image_external")) { |
| context->error(@1, "unsupported type", "samplerExternalOES"); |
| context->recover(); |
| } |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtSamplerExternalOES, qual, @1); |
| } |
| | SAMPLER2DRECT { |
| if (!context->supportsExtension("GL_ARB_texture_rectangle")) { |
| context->error(@1, "unsupported type", "sampler2DRect"); |
| context->recover(); |
| } |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtSampler2DRect, qual, @1); |
| } |
| | struct_specifier { |
| $$ = $1; |
| $$.qualifier = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| } |
| | TYPE_NAME { |
| // |
| // This is for user defined type names. The lexical phase looked up the |
| // type. |
| // |
| TType& structure = static_cast<TVariable*>($1.symbol)->getType(); |
| TQualifier qual = context->symbolTable.atGlobalLevel() ? EvqGlobal : EvqTemporary; |
| $$.setBasic(EbtStruct, qual, @1); |
| $$.userDef = &structure; |
| } |
| ; |
| |
| struct_specifier |
| : STRUCT identifier LEFT_BRACE { if (context->enterStructDeclaration(@2, *$2.string)) context->recover(); } struct_declaration_list RIGHT_BRACE { |
| if (context->reservedErrorCheck(@2, *$2.string)) |
| context->recover(); |
| |
| TType* structure = new TType(new TStructure($2.string, $5)); |
| TVariable* userTypeDef = new TVariable($2.string, *structure, true); |
| if (! context->symbolTable.insert(*userTypeDef)) { |
| context->error(@2, "redefinition", $2.string->c_str(), "struct"); |
| context->recover(); |
| } |
| $$.setBasic(EbtStruct, EvqTemporary, @1); |
| $$.userDef = structure; |
| context->exitStructDeclaration(); |
| } |
| | STRUCT LEFT_BRACE { if (context->enterStructDeclaration(@2, *$2.string)) context->recover(); } struct_declaration_list RIGHT_BRACE { |
| TType* structure = new TType(new TStructure(NewPoolTString(""), $4)); |
| $$.setBasic(EbtStruct, EvqTemporary, @1); |
| $$.userDef = structure; |
| context->exitStructDeclaration(); |
| } |
| ; |
| |
| struct_declaration_list |
| : struct_declaration { |
| $$ = $1; |
| } |
| | struct_declaration_list struct_declaration { |
| $$ = $1; |
| for (size_t i = 0; i < $2->size(); ++i) { |
| TField* field = (*$2)[i]; |
| for (size_t j = 0; j < $$->size(); ++j) { |
| if ((*$$)[j]->name() == field->name()) { |
| context->error(@2, "duplicate field name in structure:", "struct", field->name().c_str()); |
| context->recover(); |
| } |
| } |
| $$->push_back(field); |
| } |
| } |
| ; |
| |
| struct_declaration |
| : type_specifier struct_declarator_list SEMICOLON { |
| $$ = $2; |
| |
| if (context->voidErrorCheck(@1, (*$2)[0]->name(), $1)) { |
| context->recover(); |
| } |
| for (unsigned int i = 0; i < $$->size(); ++i) { |
| // |
| // Careful not to replace already known aspects of type, like array-ness |
| // |
| TType* type = (*$$)[i]->type(); |
| type->setBasicType($1.type); |
| type->setNominalSize($1.size); |
| type->setMatrix($1.matrix); |
| type->setPrecision($1.precision); |
| |
| // don't allow arrays of arrays |
| if (type->isArray()) { |
| if (context->arrayTypeErrorCheck(@1, $1)) |
| context->recover(); |
| } |
| if ($1.array) |
| type->setArraySize($1.arraySize); |
| if ($1.userDef) |
| type->setStruct($1.userDef->getStruct()); |
| |
| if (context->structNestingErrorCheck(@1, *(*$$)[i])) |
| context->recover(); |
| } |
| } |
| ; |
| |
| struct_declarator_list |
| : struct_declarator { |
| $$ = NewPoolTFieldList(); |
| $$->push_back($1); |
| } |
| | struct_declarator_list COMMA struct_declarator { |
| $$->push_back($3); |
| } |
| ; |
| |
| struct_declarator |
| : identifier { |
| if (context->reservedErrorCheck(@1, *$1.string)) |
| context->recover(); |
| |
| TType* type = new TType(EbtVoid, EbpUndefined); |
| $$ = new TField(type, $1.string); |
| } |
| | identifier LEFT_BRACKET constant_expression RIGHT_BRACKET { |
| if (context->reservedErrorCheck(@1, *$1.string)) |
| context->recover(); |
| |
| TType* type = new TType(EbtVoid, EbpUndefined); |
| int size = 0; |
| if (context->arraySizeErrorCheck(@3, $3, size)) |
| context->recover(); |
| type->setArraySize(size); |
| |
| $$ = new TField(type, $1.string); |
| } |
| ; |
| |
| initializer |
| : assignment_expression { $$ = $1; } |
| ; |
| |
| declaration_statement |
| : declaration { $$ = $1; } |
| ; |
| |
| statement |
| : compound_statement { $$ = $1; } |
| | simple_statement { $$ = $1; } |
| ; |
| |
| // Grammar Note: No labeled statements; 'goto' is not supported. |
| |
| simple_statement |
| : declaration_statement { $$ = $1; } |
| | expression_statement { $$ = $1; } |
| | selection_statement { $$ = $1; } |
| | iteration_statement { $$ = $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->setOp(EOpSequence); |
| $3->setLine(@$); |
| } |
| $$ = $3; |
| } |
| ; |
| |
| statement_no_new_scope |
| : compound_statement_no_new_scope { $$ = $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->setOp(EOpSequence); |
| $2->setLine(@$); |
| } |
| $$ = $2; |
| } |
| ; |
| |
| statement_list |
| : statement { |
| $$ = context->intermediate.makeAggregate($1, @$); |
| } |
| | statement_list statement { |
| $$ = context->intermediate.growAggregate($1, $2, @$); |
| } |
| ; |
| |
| expression_statement |
| : SEMICOLON { $$ = 0; } |
| | expression SEMICOLON { $$ = static_cast<TIntermNode*>($1); } |
| ; |
| |
| selection_statement |
| : IF LEFT_PAREN expression RIGHT_PAREN selection_rest_statement { |
| if (context->boolErrorCheck(@1, $3)) |
| context->recover(); |
| $$ = context->intermediate.addSelection($3, $5, @1); |
| } |
| ; |
| |
| selection_rest_statement |
| : statement_with_scope ELSE statement_with_scope { |
| $$.node1 = $1; |
| $$.node2 = $3; |
| } |
| | statement_with_scope { |
| $$.node1 = $1; |
| $$.node2 = 0; |
| } |
| ; |
| |
| // Grammar Note: No 'switch'. Switch statements not supported. |
| |
| condition |
| // In 1996 c++ draft, conditions can include single declarations |
| : expression { |
| $$ = $1; |
| if (context->boolErrorCheck($1->getLine(), $1)) |
| context->recover(); |
| } |
| | fully_specified_type identifier EQUAL initializer { |
| TIntermNode* intermNode; |
| if (context->structQualifierErrorCheck(@2, $1)) |
| context->recover(); |
| if (context->boolErrorCheck(@2, $1)) |
| context->recover(); |
| |
| if (!context->executeInitializer(@2, *$2.string, $1, $4, intermNode)) |
| $$ = $4; |
| else { |
| context->recover(); |
| $$ = 0; |
| } |
| } |
| ; |
| |
| iteration_statement |
| : WHILE LEFT_PAREN { context->symbolTable.push(); ++context->loopNestingLevel; } condition RIGHT_PAREN statement_no_new_scope { |
| context->symbolTable.pop(); |
| $$ = context->intermediate.addLoop(ELoopWhile, 0, $4, 0, $6, @1); |
| --context->loopNestingLevel; |
| } |
| | DO { ++context->loopNestingLevel; } statement_with_scope WHILE LEFT_PAREN expression RIGHT_PAREN SEMICOLON { |
| if (context->boolErrorCheck(@8, $6)) |
| context->recover(); |
| |
| $$ = context->intermediate.addLoop(ELoopDoWhile, 0, $6, 0, $3, @4); |
| --context->loopNestingLevel; |
| } |
| | FOR LEFT_PAREN { context->symbolTable.push(); ++context->loopNestingLevel; } for_init_statement for_rest_statement RIGHT_PAREN statement_no_new_scope { |
| context->symbolTable.pop(); |
| $$ = context->intermediate.addLoop(ELoopFor, $4, reinterpret_cast<TIntermTyped*>($5.node1), reinterpret_cast<TIntermTyped*>($5.node2), $7, @1); |
| --context->loopNestingLevel; |
| } |
| ; |
| |
| 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 { |
| if (context->loopNestingLevel <= 0) { |
| context->error(@1, "continue statement only allowed in loops", ""); |
| context->recover(); |
| } |
| $$ = context->intermediate.addBranch(EOpContinue, @1); |
| } |
| | BREAK SEMICOLON { |
| if (context->loopNestingLevel <= 0) { |
| context->error(@1, "break statement only allowed in loops", ""); |
| context->recover(); |
| } |
| $$ = context->intermediate.addBranch(EOpBreak, @1); |
| } |
| | RETURN SEMICOLON { |
| $$ = context->intermediate.addBranch(EOpReturn, @1); |
| if (context->currentFunctionType->getBasicType() != EbtVoid) { |
| context->error(@1, "non-void function must return a value", "return"); |
| context->recover(); |
| } |
| } |
| | RETURN expression SEMICOLON { |
| $$ = context->intermediate.addBranch(EOpReturn, $2, @1); |
| context->functionReturnsValue = true; |
| if (context->currentFunctionType->getBasicType() == EbtVoid) { |
| context->error(@1, "void function cannot return a value", "return"); |
| context->recover(); |
| } else if (*(context->currentFunctionType) != $2->getType()) { |
| context->error(@1, "function return is not matching type:", "return"); |
| context->recover(); |
| } |
| } |
| | DISCARD SEMICOLON { |
| FRAG_ONLY("discard", @1); |
| $$ = context->intermediate.addBranch(EOpKill, @1); |
| } |
| ; |
| |
| // Grammar Note: No 'goto'. Gotos are not supported. |
| |
| translation_unit |
| : external_declaration { |
| $$ = $1; |
| context->treeRoot = $$; |
| } |
| | translation_unit external_declaration { |
| $$ = context->intermediate.growAggregate($1, $2, @$); |
| context->treeRoot = $$; |
| } |
| ; |
| |
| external_declaration |
| : function_definition { |
| $$ = $1; |
| } |
| | declaration { |
| $$ = $1; |
| } |
| ; |
| |
| function_definition |
| : function_prototype { |
| TFunction* function = $1.function; |
| |
| const TSymbol *builtIn = context->symbolTable.findBuiltIn(function->getMangledName()); |
| |
| if (builtIn) |
| { |
| context->error(@1, "built-in functions cannot be redefined", function->getName().c_str()); |
| context->recover(); |
| } |
| |
| TFunction* prevDec = static_cast<TFunction*>(context->symbolTable.find(function->getMangledName())); |
| // |
| // Note: 'prevDec' could be 'function' if this is the first time we've seen function |
| // as it would have just been put in the symbol table. Otherwise, we're looking up |
| // an earlier occurance. |
| // |
| if (prevDec->isDefined()) { |
| // |
| // Then this function already has a body. |
| // |
| context->error(@1, "function already has a body", function->getName().c_str()); |
| context->recover(); |
| } |
| prevDec->setDefined(); |
| |
| // |
| // Raise error message if main function takes any parameters or return anything other than void |
| // |
| if (function->getName() == "main") { |
| if (function->getParamCount() > 0) { |
| context->error(@1, "function cannot take any parameter(s)", function->getName().c_str()); |
| context->recover(); |
| } |
| if (function->getReturnType().getBasicType() != EbtVoid) { |
| context->error(@1, "", function->getReturnType().getBasicString(), "main function cannot return a value"); |
| context->recover(); |
| } |
| } |
| |
| // |
| // Remember the return type for later checking for RETURN statements. |
| // |
| context->currentFunctionType = &(prevDec->getReturnType()); |
| context->functionReturnsValue = false; |
| |
| // |
| // Insert parameters into the symbol table. |
| // If the parameter has no name, it's not an error, just don't insert it |
| // (could be used for unused args). |
| // |
| // Also, accumulate the list of parameters into the HIL, so lower level code |
| // knows where to find parameters. |
| // |
| TIntermAggregate* paramNodes = new TIntermAggregate; |
| for (size_t i = 0; i < function->getParamCount(); i++) { |
| const TParameter& param = function->getParam(i); |
| if (param.name != 0) { |
| TVariable *variable = new TVariable(param.name, *param.type); |
| // |
| // Insert the parameters with name in the symbol table. |
| // |
| if (! context->symbolTable.insert(*variable)) { |
| context->error(@1, "redefinition", variable->getName().c_str()); |
| context->recover(); |
| delete variable; |
| } |
| |
| // |
| // Add the parameter to the HIL |
| // |
| paramNodes = context->intermediate.growAggregate( |
| paramNodes, |
| context->intermediate.addSymbol(variable->getUniqueId(), |
| variable->getName(), |
| variable->getType(), |
| @1), |
| @1); |
| } else { |
| paramNodes = context->intermediate.growAggregate(paramNodes, context->intermediate.addSymbol(0, "", *param.type, @1), @1); |
| } |
| } |
| context->intermediate.setAggregateOperator(paramNodes, EOpParameters, @1); |
| $1.intermAggregate = paramNodes; |
| context->loopNestingLevel = 0; |
| } |
| compound_statement_no_new_scope { |
| //?? Check that all paths return a value if return type != void ? |
| // May be best done as post process phase on intermediate code |
| if (context->currentFunctionType->getBasicType() != EbtVoid && ! context->functionReturnsValue) { |
| context->error(@1, "function does not return a value:", "", $1.function->getName().c_str()); |
| context->recover(); |
| } |
| |
| $$ = context->intermediate.growAggregate($1.intermAggregate, $3, @$); |
| context->intermediate.setAggregateOperator($$, EOpFunction, @1); |
| $$->getAsAggregate()->setName($1.function->getMangledName().c_str()); |
| $$->getAsAggregate()->setType($1.function->getReturnType()); |
| |
| // store the pragma information for debug and optimize and other vendor specific |
| // information. This information can be queried from the parse tree |
| $$->getAsAggregate()->setOptimize(context->pragma().optimize); |
| $$->getAsAggregate()->setDebug(context->pragma().debug); |
| |
| context->symbolTable.pop(); |
| } |
| ; |
| |
| %% |
| |
| void yyerror(YYLTYPE* yylloc, TParseContext* context, const char* reason) { |
| context->error(*yylloc, reason, ""); |
| context->recover(); |
| } |
| |
| int glslang_parse(TParseContext* context) { |
| return yyparse(context); |
| } |
