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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 "src/sksl/SkSLContext.h"
- #include "src/sksl/ir/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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