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
28namespace panda::es2panda::ir {
29
30void WhileStatement::Iterate(const NodeTraverser &cb) const
31{
32    cb(test_);
33    cb(body_);
34}
35
36void WhileStatement::Dump(ir::AstDumper *dumper) const
37{
38    dumper->Add({{"type", "WhileStatement"}, {"test", test_}, {"body", body_}});
39}
40
41void 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
57checker::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
69void 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