| /* |
| * Copyright 2021 Google LLC |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SKSL_METHODREFERENCE |
| #define SKSL_METHODREFERENCE |
| |
| #include "src/sksl/SkSLContext.h" |
| #include "src/sksl/ir/SkSLExpression.h" |
| |
| namespace SkSL { |
| |
| class FunctionDeclaration; |
| |
| /** |
| * An identifier referring to a method name, along with an instance for the call. |
| * This is an intermediate value: MethodReferences are always eventually replaced by FunctionCalls |
| * in valid programs. |
| * |
| * Method calls are only supported on effect-child types, and they all resolve to intrinsics |
| * prefixed with '$', and taking the 'self' object as the last parameter. For example: |
| * |
| * uniform shader child; |
| * ... |
| * child.eval(xy) --> $eval(xy, child) |
| */ |
| class MethodReference final : public Expression { |
| public: |
| inline static constexpr Kind kIRNodeKind = Kind::kMethodReference; |
| |
| MethodReference(const Context& context, |
| Position pos, |
| std::unique_ptr<Expression> self, |
| const FunctionDeclaration* overloadChain) |
| : INHERITED(pos, kIRNodeKind, context.fTypes.fInvalid.get()) |
| , fSelf(std::move(self)) |
| , fOverloadChain(overloadChain) {} |
| |
| std::unique_ptr<Expression>& self() { return fSelf; } |
| const std::unique_ptr<Expression>& self() const { return fSelf; } |
| |
| const FunctionDeclaration* overloadChain() const { return fOverloadChain; } |
| |
| std::unique_ptr<Expression> clone(Position pos) const override { |
| return std::unique_ptr<Expression>(new MethodReference( |
| pos, this->self()->clone(), this->overloadChain(), &this->type())); |
| } |
| |
| std::string description(OperatorPrecedence) const override { |
| return "<method>"; |
| } |
| |
| private: |
| MethodReference(Position pos, |
| std::unique_ptr<Expression> self, |
| const FunctionDeclaration* overloadChain, |
| const Type* type) |
| : INHERITED(pos, kIRNodeKind, type) |
| , fSelf(std::move(self)) |
| , fOverloadChain(overloadChain) {} |
| |
| std::unique_ptr<Expression> fSelf; |
| const FunctionDeclaration* fOverloadChain; |
| |
| using INHERITED = Expression; |
| }; |
| |
| } // namespace SkSL |
| |
| #endif |