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/*
* Copyright (C) 2019 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "WHLSLCheckTextureReferences.h"
#if ENABLE(WEBGPU)
#include "WHLSLArrayReferenceType.h"
#include "WHLSLArrayType.h"
#include "WHLSLFunctionDefinition.h"
#include "WHLSLInferTypes.h"
#include "WHLSLNativeTypeDeclaration.h"
#include "WHLSLPointerType.h"
#include "WHLSLVisitor.h"
namespace WebCore {
namespace WHLSL {
class TextureReferencesChecker final : public Visitor {
public:
TextureReferencesChecker() = default;
virtual ~TextureReferencesChecker() = default;
private:
void visit(AST::PointerType&) override;
void visit(AST::ArrayReferenceType&) override;
void visit(AST::ArrayType&) override;
void visit(AST::Expression&) override;
void visit(AST::FunctionDefinition&) override;
void visit(AST::NativeFunctionDeclaration&) override;
bool containsTextureOrSampler(AST::UnnamedType&);
};
class Searcher : public Visitor {
public:
Searcher() = default;
virtual ~Searcher() = default;
bool found() const { return m_found; }
private:
void visit(AST::NativeTypeDeclaration&);
bool m_found { false };
};
void Searcher::visit(AST::NativeTypeDeclaration& nativeTypeDeclaration)
{
if (nativeTypeDeclaration.isOpaqueType())
m_found = true;
}
bool TextureReferencesChecker::containsTextureOrSampler(AST::UnnamedType& unnamedType)
{
Searcher searcher;
searcher.checkErrorAndVisit(unnamedType);
return searcher.found();
}
void TextureReferencesChecker::visit(AST::PointerType& pointerType)
{
Visitor::visit(pointerType);
if (hasError())
return;
if (containsTextureOrSampler(pointerType.elementType()))
setError(Error("Cannot have a pointer to a texture or sampler.", pointerType.codeLocation()));
}
void TextureReferencesChecker::visit(AST::ArrayReferenceType& arrayReferenceType)
{
Visitor::visit(arrayReferenceType);
if (hasError())
return;
if (containsTextureOrSampler(arrayReferenceType.elementType()))
setError(Error("Cannot have an array reference to a texture or sampler.", arrayReferenceType.codeLocation()));
}
void TextureReferencesChecker::visit(AST::ArrayType& arrayType)
{
Visitor::visit(arrayType);
if (hasError())
return;
if (containsTextureOrSampler(arrayType.type()))
setError(Error("Cannot have an array of textures or samplers.", arrayType.codeLocation()));
}
void TextureReferencesChecker::visit(AST::Expression& expression)
{
Visitor::visit(expression);
checkErrorAndVisit(expression.resolvedType());
}
void TextureReferencesChecker::visit(AST::FunctionDefinition& functionDefinition)
{
if (functionDefinition.parsingMode() != ParsingMode::StandardLibrary)
Visitor::visit(functionDefinition);
}
void TextureReferencesChecker::visit(AST::NativeFunctionDeclaration&)
{
}
Expected<void, Error> checkTextureReferences(Program& program)
{
TextureReferencesChecker textureReferencesChecker;
textureReferencesChecker.checkErrorAndVisit(program);
return textureReferencesChecker.result();
}
} // namespace WHLSL
} // namespace WebCore
#endif // ENABLE(WEBGPU)