| /* |
| * Copyright 2021 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "src/sksl/SkSLContext.h" |
| |
| namespace SkSL { |
| |
| /** |
| * Used as a sentinel expression during dataflow analysis, when an exact value for a variable can't |
| * be determined at compile-time. |
| */ |
| class DefinedExpression final : public Expression { |
| public: |
| static constexpr Kind kExpressionKind = Kind::kDefined; |
| |
| DefinedExpression(const Type* type) |
| : INHERITED(/*offset=*/-1, kExpressionKind, type) {} |
| |
| bool hasProperty(Property property) const override { |
| return false; |
| } |
| |
| String description() const override { |
| return "<defined>"; |
| } |
| |
| std::unique_ptr<Expression> clone() const override { |
| return std::make_unique<DefinedExpression>(&this->type()); |
| } |
| |
| using INHERITED = Expression; |
| }; |
| |
| Context::Context(ErrorReporter& errors, const ShaderCapsClass& caps) |
| : fErrors(errors) |
| , fCaps(caps) |
| , fDefined_Expression(std::make_unique<DefinedExpression>(fTypes.fInvalid.get())) {} |
| |
| } // namespace SkSL |
| |