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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SKSL_SETTING
#define SKSL_SETTING
#include "SkSLContext.h"
#include "SkSLExpression.h"
namespace SkSL {
/**
* Represents a compile-time constant setting, such as sk_Caps.fbFetchSupport. These are generally
* collapsed down to their constant representations during the compilation process.
*/
struct Setting : public Expression {
Setting(int offset, String name, std::unique_ptr<Expression> value)
: INHERITED(offset, kSetting_Kind, value->fType)
, fName(std::move(name))
, fValue(std::move(value)) {
SkASSERT(fValue->isConstant());
}
std::unique_ptr<Expression> constantPropagate(const IRGenerator& irGenerator,
const DefinitionMap& definitions) override;
std::unique_ptr<Expression> clone() const override {
return std::unique_ptr<Expression>(new Setting(fOffset, fName, fValue->clone()));
}
String description() const override {
return fName;
}
bool hasSideEffects() const override {
return false;
}
bool isConstant() const override {
return true;
}
const String fName;
std::unique_ptr<Expression> fValue;
typedef Expression INHERITED;
};
} // namespace
#endif
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