123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263 |
- /*
- * 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_BLOCK
- #define SKSL_BLOCK
- #include "src/sksl/ir/SkSLStatement.h"
- #include "src/sksl/ir/SkSLSymbolTable.h"
- namespace SkSL {
- /**
- * A block of multiple statements functioning as a single statement.
- */
- struct Block : public Statement {
- Block(int offset, std::vector<std::unique_ptr<Statement>> statements,
- const std::shared_ptr<SymbolTable> symbols = nullptr)
- : INHERITED(offset, kBlock_Kind)
- , fSymbols(std::move(symbols))
- , fStatements(std::move(statements)) {}
- bool isEmpty() const override {
- for (const auto& s : fStatements) {
- if (!s->isEmpty()) {
- return false;
- }
- }
- return true;
- }
- std::unique_ptr<Statement> clone() const override {
- std::vector<std::unique_ptr<Statement>> cloned;
- for (const auto& s : fStatements) {
- cloned.push_back(s->clone());
- }
- return std::unique_ptr<Statement>(new Block(fOffset, std::move(cloned), fSymbols));
- }
- String description() const override {
- String result("{");
- for (size_t i = 0; i < fStatements.size(); i++) {
- result += "\n";
- result += fStatements[i]->description();
- }
- result += "\n}\n";
- return result;
- }
- // it's important to keep fStatements defined after (and thus destroyed before) fSymbols,
- // because destroying statements can modify reference counts in symbols
- const std::shared_ptr<SymbolTable> fSymbols;
- std::vector<std::unique_ptr<Statement>> fStatements;
- typedef Statement INHERITED;
- };
- } // namespace
- #endif
|