1/*
2 * Copyright (C) 2016 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#include "java/ClassDefinition.h"
18
19#include "androidfw/StringPiece.h"
20
21using ::aapt::text::Printer;
22using ::android::StringPiece;
23
24namespace aapt {
25
26void ClassMember::Print(bool /*final*/, Printer* printer) const {
27  processor_.Print(printer);
28}
29
30void MethodDefinition::AppendStatement(const StringPiece& statement) {
31  statements_.push_back(statement.to_string());
32}
33
34void MethodDefinition::Print(bool final, Printer* printer) const {
35  printer->Print(signature_).Println(" {");
36  printer->Indent();
37  for (const auto& statement : statements_) {
38    printer->Println(statement);
39  }
40  printer->Undent();
41  printer->Print("}");
42}
43
44ClassDefinition::Result ClassDefinition::AddMember(std::unique_ptr<ClassMember> member) {
45  Result result = Result::kAdded;
46  auto iter = indexed_members_.find(member->GetName());
47  if (iter != indexed_members_.end()) {
48    // Overwrite the entry. Be careful, as the key in indexed_members_ is actually memory owned
49    // by the value at ordered_members_[index]. Since overwriting a value for a key doesn't replace
50    // the key (the initial key inserted into the unordered_map is kept), we must erase and then
51    // insert a new key, whose memory is being kept around. We do all this to avoid using more
52    // memory for each key.
53    size_t index = iter->second;
54
55    // Erase the key + value from the map.
56    indexed_members_.erase(iter);
57
58    // Now clear the memory that was backing the key (now erased).
59    ordered_members_[index].reset();
60    result = Result::kOverridden;
61  }
62
63  indexed_members_[member->GetName()] = ordered_members_.size();
64  ordered_members_.push_back(std::move(member));
65  return result;
66}
67
68bool ClassDefinition::empty() const {
69  for (const std::unique_ptr<ClassMember>& member : ordered_members_) {
70    if (member != nullptr && !member->empty()) {
71      return false;
72    }
73  }
74  return true;
75}
76
77void ClassDefinition::Print(bool final, Printer* printer) const {
78  if (empty() && !create_if_empty_) {
79    return;
80  }
81
82  ClassMember::Print(final, printer);
83
84  printer->Print("public ");
85  if (qualifier_ == ClassQualifier::kStatic) {
86    printer->Print("static ");
87  }
88  printer->Print("final class ").Print(name_).Println(" {");
89  printer->Indent();
90
91  for (const std::unique_ptr<ClassMember>& member : ordered_members_) {
92    // There can be nullptr members when a member is added to the ClassDefinition
93    // and takes precedence over a previous member with the same name. The overridden member is
94    // set to nullptr.
95    if (member != nullptr) {
96      member->Print(final, printer);
97      printer->Println();
98    }
99  }
100
101  printer->Undent();
102  printer->Print("}");
103}
104
105constexpr static const char* sWarningHeader =
106    "/* AUTO-GENERATED FILE. DO NOT MODIFY.\n"
107    " *\n"
108    " * This class was automatically generated by the\n"
109    " * aapt tool from the resource data it found. It\n"
110    " * should not be modified by hand.\n"
111    " */\n\n";
112
113void ClassDefinition::WriteJavaFile(const ClassDefinition* def, const StringPiece& package,
114                                    bool final, io::OutputStream* out) {
115  Printer printer(out);
116  printer.Print(sWarningHeader).Print("package ").Print(package).Println(";");
117  printer.Println();
118  def->Print(final, &printer);
119}
120
121}  // namespace aapt
122