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 {
BlockBlock20     Block(Position position, std::vector<std::unique_ptr<Statement>> statements,
21           const std::shared_ptr<SymbolTable> symbols)
22     : INHERITED(position, kBlock_Kind)
23     , fSymbols(std::move(symbols))
24     , fStatements(std::move(statements)) {}
25 
descriptionBlock26     SkString description() const override {
27         SkString result("{");
28         for (size_t i = 0; i < fStatements.size(); i++) {
29             result += "\n";
30             result += fStatements[i]->description();
31         }
32         result += "\n}\n";
33         return result;
34     }
35 
36     // it's important to keep fStatements defined after (and thus destroyed before) fSymbols,
37     // because destroying statements can modify reference counts in symbols
38     const std::shared_ptr<SymbolTable> fSymbols;
39     const std::vector<std::unique_ptr<Statement>> fStatements;
40 
41     typedef Statement INHERITED;
42 };
43 
44 } // namespace
45 
46 #endif
47