| /* |
| * 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_FUNCTIONDEFINITION |
| #define SKSL_FUNCTIONDEFINITION |
| |
| #include "src/sksl/ir/SkSLBlock.h" |
| #include "src/sksl/ir/SkSLFunctionDeclaration.h" |
| #include "src/sksl/ir/SkSLProgramElement.h" |
| |
| #include <unordered_set> |
| |
| namespace SkSL { |
| |
| struct ASTNode; |
| |
| /** |
| * A function definition (a declaration plus an associated block of code). |
| */ |
| struct FunctionDefinition : public ProgramElement { |
| static constexpr Kind kProgramElementKind = Kind::kFunction; |
| |
| FunctionDefinition(int offset, |
| const FunctionDeclaration& declaration, |
| std::unique_ptr<Statement> body, |
| std::unordered_set<const FunctionDeclaration*> referencedIntrinsics = {}) |
| : INHERITED(offset, kProgramElementKind) |
| , fDeclaration(declaration) |
| , fBody(std::move(body)) |
| , fReferencedIntrinsics(std::move(referencedIntrinsics)) {} |
| |
| std::unique_ptr<ProgramElement> clone() const override { |
| return std::make_unique<FunctionDefinition>(fOffset, fDeclaration, |
| fBody->clone(), fReferencedIntrinsics); |
| } |
| |
| String description() const override { |
| return fDeclaration.description() + " " + fBody->description(); |
| } |
| |
| const FunctionDeclaration& fDeclaration; |
| std::unique_ptr<Statement> fBody; |
| // We track intrinsic functions we reference so that we can ensure that all of them end up |
| // copied into the final output. |
| std::unordered_set<const FunctionDeclaration*> fReferencedIntrinsics; |
| // This pointer may be null, and even when non-null is not guaranteed to remain valid for the |
| // entire lifespan of this object. The parse tree's lifespan is normally controlled by |
| // IRGenerator, so the IRGenerator being destroyed or being used to compile another file will |
| // invalidate this pointer. |
| const ASTNode* fSource = nullptr; |
| |
| using INHERITED = ProgramElement; |
| }; |
| |
| } // namespace SkSL |
| |
| #endif |