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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.
*/
#ifndef SKSL_BLOCK
#define SKSL_BLOCK
#include "SkSLStatement.h"
#include "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
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