1 /* 2 * Copyright 2016 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef SKSL_BLOCK 9 #define SKSL_BLOCK 10 11 #include "SkSLStatement.h" 12 #include "SkSLSymbolTable.h" 13 14 namespace SkSL { 15 16 /** 17 * A block of multiple statements functioning as a single statement. 18 */ 19 struct Block : public Statement { 20 Block(int offset, std::vector<std::unique_ptr<Statement>> statements, 21 const std::shared_ptr<SymbolTable> symbols = nullptr) 22 : INHERITED(offset, kBlock_Kind) 23 , fSymbols(std::move(symbols)) 24 , fStatements(std::move(statements)) {} 25 26 bool isEmpty() const override { 27 for (const auto& s : fStatements) { 28 if (!s->isEmpty()) { 29 return false; 30 } 31 } 32 return true; 33 } 34 35 String description() const override { 36 String result("{"); 37 for (size_t i = 0; i < fStatements.size(); i++) { 38 result += "\n"; 39 result += fStatements[i]->description(); 40 } 41 result += "\n}\n"; 42 return result; 43 } 44 45 // it's important to keep fStatements defined after (and thus destroyed before) fSymbols, 46 // because destroying statements can modify reference counts in symbols 47 const std::shared_ptr<SymbolTable> fSymbols; 48 std::vector<std::unique_ptr<Statement>> fStatements; 49 50 typedef Statement INHERITED; 51 }; 52 53 } // namespace 54 55 #endif 56
