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* Copyright 2016 Google Inc.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
#include "src/sksl/ir/SkSLBlock.h"
#include "src/sksl/ir/SkSLFunctionDeclaration.h"
#include "src/sksl/ir/SkSLProgramElement.h"
namespace SkSL {
struct ASTNode;
* A function definition (a declaration plus an associated block of code).
struct FunctionDefinition : public ProgramElement {
FunctionDefinition(int offset, const FunctionDeclaration& declaration,
std::unique_ptr<Statement> body)
: INHERITED(offset, kFunction_Kind)
, fDeclaration(declaration)
, fBody(std::move(body)) {}
bool canBeInlined() const {
static const int INLINE_THRESHOLD = 50; // chosen arbitrarily, feel free to adjust
return fBody->nodeCount() < INLINE_THRESHOLD;
std::unique_ptr<ProgramElement> clone() const override {
return std::unique_ptr<ProgramElement>(new FunctionDefinition(fOffset, fDeclaration,
String description() const override {
return fDeclaration.description() + " " + fBody->description();
const FunctionDeclaration& fDeclaration;
std::unique_ptr<Statement> fBody;
// 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;
typedef ProgramElement INHERITED;
} // namespace