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 "arrowFunctionExpression.h"
17
18#include <compiler/core/pandagen.h>
19#include <typescript/checker.h>
20#include <ir/astDump.h>
21#include <ir/base/scriptFunction.h>
22#include <ir/expressions/identifier.h>
23#include <ir/statements/variableDeclarator.h>
24
25namespace panda::es2panda::ir {
26
27void ArrowFunctionExpression::Iterate(const NodeTraverser &cb) const
28{
29    cb(func_);
30}
31
32void ArrowFunctionExpression::Dump(ir::AstDumper *dumper) const
33{
34    dumper->Add({{"type", "ArrowFunctionExpression"}, {"function", func_}});
35}
36
37void ArrowFunctionExpression::Compile(compiler::PandaGen *pg) const
38{
39    pg->DefineFunction(func_, func_, func_->Scope()->InternalName());
40}
41
42checker::Type *ArrowFunctionExpression::Check(checker::Checker *checker) const
43{
44    binder::Variable *funcVar = nullptr;
45
46    if (func_->Parent()->Parent() && func_->Parent()->Parent()->IsVariableDeclarator() &&
47        func_->Parent()->Parent()->AsVariableDeclarator()->Id()->IsIdentifier()) {
48        funcVar = func_->Parent()->Parent()->AsVariableDeclarator()->Id()->AsIdentifier()->Variable();
49    }
50
51    checker::ScopeContext scopeCtx(checker, func_->Scope());
52
53    auto *signatureInfo = checker->Allocator()->New<checker::SignatureInfo>(checker->Allocator());
54    checker->CheckFunctionParameterDeclarations(func_->Params(), signatureInfo);
55
56    auto *signature =
57        checker->Allocator()->New<checker::Signature>(signatureInfo, checker->GlobalResolvingReturnType());
58    checker::Type *funcType = checker->CreateFunctionTypeWithSignature(signature);
59
60    if (funcVar && !funcVar->TsType()) {
61        funcVar->SetTsType(funcType);
62    }
63
64    CHECK_NOT_NULL(signature);
65    signature->SetReturnType(checker->HandleFunctionReturn(func_));
66
67    if (!func_->Body()->IsExpression()) {
68        func_->Body()->Check(checker);
69    }
70
71    return funcType;
72}
73
74void ArrowFunctionExpression::UpdateSelf(const NodeUpdater &cb, [[maybe_unused]] binder::Binder *binder)
75{
76    func_ = std::get<ir::AstNode *>(cb(func_))->AsScriptFunction();
77}
78
79}  // namespace panda::es2panda::ir
80