| /* |
| * 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 { |
| static constexpr Kind kExpressionKind = kSetting_Kind; |
| |
| Setting(int offset, String name, std::unique_ptr<Expression> value) |
| : INHERITED(offset, kExpressionKind, value->fType) |
| , fName(std::move(name)) |
| , fValue(std::move(value)) { |
| SkASSERT(fValue->isCompileTimeConstant()); |
| } |
| |
| 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 hasProperty(Property property) const override { |
| return false; |
| } |
| |
| bool isCompileTimeConstant() const override { |
| return true; |
| } |
| |
| const String fName; |
| std::unique_ptr<Expression> fValue; |
| |
| using INHERITED = Expression; |
| }; |
| |
| } // namespace SkSL |
| |
| #endif |