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 "forUpdateStatement.h"
17
18#include <binder/binder.h>
19#include <binder/scope.h>
20#include <compiler/base/condition.h>
21#include <compiler/base/lreference.h>
22#include <compiler/core/labelTarget.h>
23#include <compiler/core/pandagen.h>
24#include <compiler/core/dynamicContext.h>
25#include <typescript/checker.h>
26#include <ir/astDump.h>
27#include <ir/expression.h>
28
29namespace panda::es2panda::ir {
30
31void ForUpdateStatement::Iterate(const NodeTraverser &cb) const
32{
33    if (init_) {
34        cb(init_);
35    }
36    if (test_) {
37        cb(test_);
38    }
39    if (update_) {
40        cb(update_);
41    }
42
43    cb(body_);
44}
45
46void ForUpdateStatement::Dump(ir::AstDumper *dumper) const
47{
48    dumper->Add({{"type", "ForUpdateStatement"},
49                 {"init", AstDumper::Nullable(init_)},
50                 {"test", AstDumper::Nullable(test_)},
51                 {"update", AstDumper::Nullable(update_)},
52                 {"body", body_}});
53}
54
55void ForUpdateStatement::Compile(compiler::PandaGen *pg) const
56{
57    compiler::LocalRegScope loopRegScope(pg, scope_);
58    compiler::LabelTarget labelTarget(pg);
59    compiler::LoopEnvScope envScope(pg, labelTarget, scope_);
60
61    if (init_) {
62        ASSERT(init_->IsVariableDeclaration() || init_->IsExpression());
63        init_->Compile(pg);
64    }
65
66    auto *startLabel = pg->AllocLabel();
67    pg->SetLabel(this, startLabel);
68
69    {
70        if (test_) {
71            compiler::Condition::Compile(pg, test_, labelTarget.BreakTarget());
72        }
73
74        body_->Compile(pg);
75        pg->SetLabel(this, labelTarget.ContinueTarget());
76        envScope.CopyPerIterationCtx();
77    }
78
79    if (update_) {
80        update_->Compile(pg);
81    }
82
83    pg->Branch(this, startLabel);
84    pg->SetLabel(this, labelTarget.BreakTarget());
85}
86
87checker::Type *ForUpdateStatement::Check(checker::Checker *checker) const
88{
89    checker::ScopeContext scopeCtx(checker, scope_);
90
91    if (init_) {
92        init_->Check(checker);
93    }
94
95    if (test_) {
96        checker::Type *testType = test_->Check(checker);
97        checker->CheckTruthinessOfType(testType, Start());
98    }
99
100    if (update_) {
101        update_->Check(checker);
102    }
103
104    body_->Check(checker);
105
106    return nullptr;
107}
108
109void ForUpdateStatement::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
110{
111    auto *loopScope = Scope();
112    auto loopCtx = binder::LexicalScope<binder::LoopScope>::Enter(binder, loopScope);
113
114    if (init_) {
115        init_ = std::get<ir::AstNode *>(cb(init_));
116    }
117
118    if (test_) {
119        test_ = std::get<ir::AstNode *>(cb(test_))->AsExpression();
120    }
121
122    if (update_) {
123        update_ = std::get<ir::AstNode *>(cb(update_))->AsExpression();
124    }
125
126    body_ = UpdateChildStatement(cb, binder, body_);
127}
128
129}  // namespace panda::es2panda::ir
130