1 | /* |
2 | * Copyright 2017 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_SWITCHSTATEMENT |
9 | #define SKSL_SWITCHSTATEMENT |
10 | |
11 | #include "src/sksl/ir/SkSLStatement.h" |
12 | #include "src/sksl/ir/SkSLSwitchCase.h" |
13 | |
14 | namespace SkSL { |
15 | |
16 | class SymbolTable; |
17 | |
18 | /** |
19 | * A 'switch' statement. |
20 | */ |
21 | struct SwitchStatement : public Statement { |
22 | SwitchStatement(int offset, bool isStatic, std::unique_ptr<Expression> value, |
23 | std::vector<std::unique_ptr<SwitchCase>> cases, |
24 | const std::shared_ptr<SymbolTable> symbols) |
25 | : INHERITED(offset, kSwitch_Kind) |
26 | , fIsStatic(isStatic) |
27 | , fValue(std::move(value)) |
28 | , fSymbols(std::move(symbols)) |
29 | , fCases(std::move(cases)) {} |
30 | |
31 | std::unique_ptr<Statement> clone() const override { |
32 | std::vector<std::unique_ptr<SwitchCase>> cloned; |
33 | for (const auto& s : fCases) { |
34 | cloned.push_back(std::unique_ptr<SwitchCase>((SwitchCase*) s->clone().release())); |
35 | } |
36 | return std::unique_ptr<Statement>(new SwitchStatement(fOffset, fIsStatic, fValue->clone(), |
37 | std::move(cloned), fSymbols)); |
38 | } |
39 | |
40 | #ifdef SK_DEBUG |
41 | String description() const override { |
42 | String result; |
43 | if (fIsStatic) { |
44 | result += "@" ; |
45 | } |
46 | result += String::printf("switch (%s) {\n" , fValue->description().c_str()); |
47 | for (const auto& c : fCases) { |
48 | result += c->description(); |
49 | } |
50 | result += "}" ; |
51 | return result; |
52 | } |
53 | #endif |
54 | |
55 | bool fIsStatic; |
56 | std::unique_ptr<Expression> fValue; |
57 | // it's important to keep fCases defined after (and thus destroyed before) fSymbols, because |
58 | // destroying statements can modify reference counts in symbols |
59 | const std::shared_ptr<SymbolTable> fSymbols; |
60 | std::vector<std::unique_ptr<SwitchCase>> fCases; |
61 | |
62 | typedef Statement INHERITED; |
63 | }; |
64 | |
65 | } // namespace |
66 | |
67 | #endif |
68 | |