26d3145334
This PR adds support for default function parameters in the following cases:
1. Simple constants, such as void fn(int x, float myparam = 3)
2. Expressions that can be const folded, such a ... myparam = sin(some_const)
3. Initializer lists that can be const folded, such as ... float2 myparam = {1,2}
New tests are added: hlsl.params.default.frag and hlsl.params.default.err.frag
(for testing error situations, such as ambiguity or non-const-foldable).
In order to avoid sampler method ambiguity, the hlsl better() lambda now
considers sampler matches. Previously, all sampler types looked identical
since only the basic type of EbtSampler was considered.
123 lines
5.1 KiB
C++
Executable File
123 lines
5.1 KiB
C++
Executable File
//
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//Copyright (C) 2016 Google, Inc.
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//Copyright (C) 2016 LunarG, Inc.
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//
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//All rights reserved.
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//
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//Redistribution and use in source and binary forms, with or without
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//modification, are permitted provided that the following conditions
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//are met:
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//
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// Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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//
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// Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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//
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// Neither the name of Google, Inc., nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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//POSSIBILITY OF SUCH DAMAGE.
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//
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#ifndef HLSLGRAMMAR_H_
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#define HLSLGRAMMAR_H_
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#include "hlslParseHelper.h"
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#include "hlslOpMap.h"
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#include "hlslTokenStream.h"
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namespace glslang {
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class TAttributeMap; // forward declare
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// Should just be the grammar aspect of HLSL.
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// Described in more detail in hlslGrammar.cpp.
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class HlslGrammar : public HlslTokenStream {
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public:
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HlslGrammar(HlslScanContext& scanner, HlslParseContext& parseContext)
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: HlslTokenStream(scanner), parseContext(parseContext), intermediate(parseContext.intermediate) { }
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virtual ~HlslGrammar() { }
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bool parse();
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protected:
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HlslGrammar();
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HlslGrammar& operator=(const HlslGrammar&);
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void expected(const char*);
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void unimplemented(const char*);
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bool acceptIdentifier(HlslToken&);
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bool acceptCompilationUnit();
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bool acceptDeclaration(TIntermNode*& node);
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bool acceptControlDeclaration(TIntermNode*& node);
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bool acceptSamplerDeclarationDX9(TType&);
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bool acceptSamplerState();
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bool acceptFullySpecifiedType(TType&);
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bool acceptQualifier(TQualifier&);
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bool acceptLayoutQualifierList(TQualifier&);
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bool acceptType(TType&);
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bool acceptTemplateVecMatBasicType(TBasicType&);
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bool acceptVectorTemplateType(TType&);
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bool acceptMatrixTemplateType(TType&);
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bool acceptStreamOutTemplateType(TType&, TLayoutGeometry&);
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bool acceptOutputPrimitiveGeometry(TLayoutGeometry&);
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bool acceptAnnotations(TQualifier&);
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bool acceptSamplerType(TType&);
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bool acceptTextureType(TType&);
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bool acceptStruct(TType&);
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bool acceptStructDeclarationList(TTypeList*&);
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bool acceptFunctionParameters(TFunction&);
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bool acceptParameterDeclaration(TFunction&);
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bool acceptFunctionDefinition(TFunction&, TIntermNode*&, const TAttributeMap&);
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bool acceptParenExpression(TIntermTyped*&);
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bool acceptExpression(TIntermTyped*&);
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bool acceptInitializer(TIntermTyped*&);
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bool acceptAssignmentExpression(TIntermTyped*&);
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bool acceptConditionalExpression(TIntermTyped*&);
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bool acceptBinaryExpression(TIntermTyped*&, PrecedenceLevel);
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bool acceptUnaryExpression(TIntermTyped*&);
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bool acceptPostfixExpression(TIntermTyped*&);
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bool acceptConstructor(TIntermTyped*&);
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bool acceptFunctionCall(HlslToken, TIntermTyped*&, TIntermTyped* base = nullptr);
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bool acceptArguments(TFunction*, TIntermTyped*&);
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bool acceptLiteral(TIntermTyped*&);
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bool acceptCompoundStatement(TIntermNode*&);
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bool acceptStatement(TIntermNode*&);
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bool acceptScopedStatement(TIntermNode*&);
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bool acceptScopedCompoundStatement(TIntermNode*&);
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bool acceptNestedStatement(TIntermNode*&);
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void acceptAttributes(TAttributeMap&);
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bool acceptSelectionStatement(TIntermNode*&);
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bool acceptSwitchStatement(TIntermNode*&);
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bool acceptIterationStatement(TIntermNode*&);
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bool acceptJumpStatement(TIntermNode*&);
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bool acceptCaseLabel(TIntermNode*&);
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bool acceptDefaultLabel(TIntermNode*&);
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void acceptArraySpecifier(TArraySizes*&);
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void acceptPostDecls(TQualifier&);
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bool acceptDefaultParameterDeclaration(const TType&, TIntermTyped*&);
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HlslParseContext& parseContext; // state of parsing and helper functions for building the intermediate
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TIntermediate& intermediate; // the final product, the intermediate representation, includes the AST
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};
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} // end namespace glslang
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#endif // HLSLGRAMMAR_H_
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