Source/WebGPU/WGSL/CompilationScope.cpp

/*
 * Copyright (c) 2024 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    documentation and/or other materials provided with the distribution.
 *
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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#include "config.h"
#include "CompilationScope.h"

#include "WGSLShaderModule.h"

namespace WGSL {

CompilationScope::CompilationScope(ShaderModule& shaderModule)
    : m_shaderModule(shaderModule)
    , m_builderState(shaderModule.astBuilder().saveCurrentState())
    , m_replacementsSize(shaderModule.currentReplacementSize())
{
}

CompilationScope::CompilationScope(CompilationScope&& other)
    : m_shaderModule(other.m_shaderModule)
    , m_builderState(other.m_builderState)
    , m_replacementsSize(other.m_replacementsSize)
{
    other.m_invalidated = true;
}

CompilationScope::~CompilationScope()
{
    if (m_invalidated)
        return;
    m_shaderModule.revertReplacements(m_replacementsSize);
    m_shaderModule.astBuilder().restore(WTF::move(m_builderState));
}

} // namespace WGSL