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
15namespace SkSL {
16
17/**
18 * A 'for' statement.
19 */
20struct ForStatement : public Statement {
21    ForStatement(Position position, 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(position, 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
31    SkString description() const override {
32        SkString 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    const std::unique_ptr<Statement> fInitializer;
52    std::unique_ptr<Expression> fTest;
53    std::unique_ptr<Expression> fNext;
54    const std::unique_ptr<Statement> fStatement;
55
56    typedef Statement INHERITED;
57};
58
59} // namespace
60
61#endif
62