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_FORSTATEMENT
9 #define SKSL_FORSTATEMENT
10 
11 #include "SkSLExpression.h"
12 #include "SkSLStatement.h"
13 #include "SkSLSymbolTable.h"
14 
15 namespace SkSL {
16 
17 /**
18  * A 'for' statement.
19  */
20 struct ForStatement : public Statement {
ForStatementForStatement21     ForStatement(int offset, std::unique_ptr<Statement> initializer,
22                  std::unique_ptr<Expression> test, std::unique_ptr<Expression> next,
23                  std::unique_ptr<Statement> statement, std::shared_ptr<SymbolTable> symbols)
24     : INHERITED(offset, kFor_Kind)
25     , fSymbols(symbols)
26     , fInitializer(std::move(initializer))
27     , fTest(std::move(test))
28     , fNext(std::move(next))
29     , fStatement(std::move(statement)) {}
30 
descriptionForStatement31     String description() const override {
32         String result("for (");
33         if (fInitializer) {
34             result += fInitializer->description();
35         }
36         result += " ";
37         if (fTest) {
38             result += fTest->description();
39         }
40         result += "; ";
41         if (fNext) {
42             result += fNext->description();
43         }
44         result += ") " + fStatement->description();
45         return result;
46     }
47 
48     // it's important to keep fSymbols defined first (and thus destroyed last) because destroying
49     // the other fields can update symbol reference counts
50     const std::shared_ptr<SymbolTable> fSymbols;
51     std::unique_ptr<Statement> fInitializer;
52     std::unique_ptr<Expression> fTest;
53     std::unique_ptr<Expression> fNext;
54     std::unique_ptr<Statement> fStatement;
55 
56     typedef Statement INHERITED;
57 };
58 
59 } // namespace
60 
61 #endif
62