1 /**
2 * Copyright (c) 2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "whileStatement.h"
17
18 #include <binder/binder.h>
19 #include <binder/scope.h>
20 #include <compiler/base/condition.h>
21 #include <compiler/core/labelTarget.h>
22 #include <compiler/core/pandagen.h>
23 #include <compiler/core/regScope.h>
24 #include <typescript/checker.h>
25 #include <ir/astDump.h>
26 #include <ir/expression.h>
27
28 namespace panda::es2panda::ir {
29
Iterate(const NodeTraverser & cb) const30 void WhileStatement::Iterate(const NodeTraverser &cb) const
31 {
32 cb(test_);
33 cb(body_);
34 }
35
Dump(ir::AstDumper * dumper) const36 void WhileStatement::Dump(ir::AstDumper *dumper) const
37 {
38 dumper->Add({{"type", "WhileStatement"}, {"test", test_}, {"body", body_}});
39 }
40
Compile(compiler::PandaGen * pg) const41 void WhileStatement::Compile(compiler::PandaGen *pg) const
42 {
43 compiler::LabelTarget labelTarget(pg);
44
45 pg->SetLabel(this, labelTarget.ContinueTarget());
46 compiler::Condition::Compile(pg, test_, labelTarget.BreakTarget());
47
48 {
49 compiler::LoopEnvScope envScope(pg, labelTarget, scope_);
50 body_->Compile(pg);
51 }
52
53 pg->Branch(this, labelTarget.ContinueTarget());
54 pg->SetLabel(this, labelTarget.BreakTarget());
55 }
56
Check(checker::Checker * checker) const57 checker::Type *WhileStatement::Check(checker::Checker *checker) const
58 {
59 checker::ScopeContext scopeCtx(checker, scope_);
60
61 checker::Type *testType = test_->Check(checker);
62 checker->CheckTruthinessOfType(testType, Start());
63
64 body_->Check(checker);
65
66 return nullptr;
67 }
68
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)69 void WhileStatement::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
70 {
71 test_ = std::get<ir::AstNode *>(cb(test_))->AsExpression();
72
73 auto loopScopeCtx = binder::LexicalScope<binder::LoopScope>::Enter(binder, scope_);
74 body_ = UpdateChildStatement(cb, binder, body_);
75 }
76
77 } // namespace panda::es2panda::ir
78