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 "conditionalExpression.h"
17
18 #include <compiler/base/condition.h>
19 #include <compiler/core/pandagen.h>
20 #include <typescript/checker.h>
21 #include <ir/astDump.h>
22
23 namespace panda::es2panda::ir {
24
Iterate(const NodeTraverser & cb) const25 void ConditionalExpression::Iterate(const NodeTraverser &cb) const
26 {
27 cb(test_);
28 cb(consequent_);
29 cb(alternate_);
30 }
31
Dump(ir::AstDumper * dumper) const32 void ConditionalExpression::Dump(ir::AstDumper *dumper) const
33 {
34 dumper->Add(
35 {{"type", "ConditionalExpression"}, {"test", test_}, {"consequent", consequent_}, {"alternate", alternate_}});
36 }
37
Compile(compiler::PandaGen * pg) const38 void ConditionalExpression::Compile(compiler::PandaGen *pg) const
39 {
40 auto *falseLabel = pg->AllocLabel();
41 auto *endLabel = pg->AllocLabel();
42
43 compiler::Condition::Compile(pg, test_, falseLabel);
44 consequent_->Compile(pg);
45 pg->Branch(this, endLabel);
46 pg->SetLabel(this, falseLabel);
47 alternate_->Compile(pg);
48 pg->SetLabel(this, endLabel);
49 }
50
Check(checker::Checker * checker) const51 checker::Type *ConditionalExpression::Check(checker::Checker *checker) const
52 {
53 checker::Type *testType = test_->Check(checker);
54
55 checker->CheckTruthinessOfType(testType, test_->Start());
56 checker->CheckTestingKnownTruthyCallableOrAwaitableType(test_, testType, consequent_);
57
58 checker::Type *consequentType = consequent_->Check(checker);
59 checker::Type *alternateType = alternate_->Check(checker);
60
61 return checker->CreateUnionType({consequentType, alternateType});
62 }
63
UpdateSelf(const NodeUpdater & cb,binder::Binder * binder)64 void ConditionalExpression::UpdateSelf(const NodeUpdater &cb, [[maybe_unused]] binder::Binder *binder)
65 {
66 test_ = std::get<ir::AstNode *>(cb(test_))->AsExpression();
67 consequent_ = std::get<ir::AstNode *>(cb(consequent_))->AsExpression();
68 alternate_ = std::get<ir::AstNode *>(cb(alternate_))->AsExpression();
69 }
70
71 } // namespace panda::es2panda::ir
72