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 "catchClause.h"
17
18#include <binder/binder.h>
19#include <binder/scope.h>
20#include <compiler/core/pandagen.h>
21#include <compiler/base/lreference.h>
22#include <typescript/checker.h>
23#include <typescript/types/type.h>
24#include <ir/astDump.h>
25#include <ir/expression.h>
26#include <ir/expressions/arrayExpression.h>
27#include <ir/expressions/identifier.h>
28#include <ir/expressions/objectExpression.h>
29#include <ir/statements/blockStatement.h>
30
31namespace panda::es2panda::ir {
32
33void CatchClause::Iterate(const NodeTraverser &cb) const
34{
35    if (param_) {
36        cb(param_);
37    }
38
39    cb(body_);
40}
41
42void CatchClause::Dump(ir::AstDumper *dumper) const
43{
44    dumper->Add({{"type", "CatchClause"}, {"body", body_}, {"param", AstDumper::Nullable(param_)}});
45}
46
47void CatchClause::Compile(compiler::PandaGen *pg) const
48{
49    compiler::LocalRegScope lrs(pg, scope_->ParamScope());
50
51    if (param_) {
52        auto lref = compiler::LReference::CreateLRef(pg, param_, true);
53        lref.SetValue();
54    }
55
56    ASSERT(scope_ == body_->Scope());
57    body_->Compile(pg);
58}
59
60checker::Type *CatchClause::Check(checker::Checker *checker) const
61{
62    const ir::Expression *typeAnnotation = nullptr;
63
64    if (param_->IsIdentifier()) {
65        typeAnnotation = param_->AsIdentifier()->TypeAnnotation();
66    } else if (param_->IsArrayPattern()) {
67        typeAnnotation = param_->AsArrayPattern()->TypeAnnotation();
68    } else {
69        ASSERT(param_->IsObjectPattern());
70        typeAnnotation = param_->AsObjectPattern()->TypeAnnotation();
71    }
72
73    if (typeAnnotation) {
74        checker::Type *catchParamType = typeAnnotation->Check(checker);
75
76        if (!catchParamType->HasTypeFlag(checker::TypeFlag::ANY_OR_UNKNOWN)) {
77            checker->ThrowTypeError("Catch clause variable type annotation must be 'any' or 'unknown' if specified",
78                                    Start());
79        }
80    }
81
82    body_->Check(checker);
83
84    return nullptr;
85}
86
87void CatchClause::UpdateSelf(const NodeUpdater &cb, binder::Binder *binder)
88{
89    if (param_) {
90        auto paramScopeCtx = binder::LexicalScope<binder::CatchParamScope>::Enter(binder, scope_->ParamScope());
91        param_ = std::get<ir::AstNode *>(cb(param_))->AsExpression();
92    }
93
94    auto scopeCtx = binder::LexicalScope<binder::CatchScope>::Enter(binder, scope_);
95    body_ = std::get<ir::AstNode *>(cb(body_))->AsBlockStatement();
96}
97
98}  // namespace panda::es2panda::ir
99