| /* |
| * 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 IRNodes should |
| * only exist in a dehydrated module. These nodes are replaced with the value of the setting during |
| * rehydration or compilation (i.e., whenever fReplaceSettings is true). |
| */ |
| class Setting final : public Expression { |
| public: |
| static constexpr Kind kExpressionKind = Kind::kSetting; |
| |
| Setting(int offset, skstd::string_view name, const Type* type) |
| : INHERITED(offset, kExpressionKind, type) |
| , fName(std::move(name)) {} |
| |
| // Creates an SkSL setting expression if `fReplaceSettings` is false, or the current value of |
| // the setting when it is true. Reports errors via the ErrorReporter. |
| // (There's no failsafe Make equivalent, because there really isn't a good fallback expression |
| // to produce when the `name` lookup fails. We wouldn't even know the expected type.) |
| static std::unique_ptr<Expression> Convert(const Context& context, int offset, |
| const skstd::string_view& name); |
| |
| std::unique_ptr<Expression> clone() const override { |
| return std::make_unique<Setting>(fOffset, this->name(), &this->type()); |
| } |
| |
| const skstd::string_view& name() const { |
| return fName; |
| } |
| |
| String description() const override { |
| return String(this->name()); |
| } |
| |
| bool hasProperty(Property property) const override { |
| return false; |
| } |
| |
| private: |
| skstd::string_view fName; |
| |
| using INHERITED = Expression; |
| }; |
| |
| } // namespace SkSL |
| |
| #endif |