ManifestClassGenerator.cpp revision 09f4d706d9438980465faabe81ed143fc299343e 
1/*
2 * Copyright (C) 2015 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/ManifestClassGenerator.h"
18
19#include <algorithm>
20
21#include "Source.h"
22#include "java/AnnotationProcessor.h"
23#include "java/ClassDefinition.h"
24#include "text/Unicode.h"
25#include "util/Maybe.h"
26#include "xml/XmlDom.h"
27
28using ::android::StringPiece;
29using ::aapt::text::IsJavaIdentifier;
30
31namespace aapt {
32
33static Maybe<StringPiece> ExtractJavaIdentifier(IDiagnostics* diag, const Source& source,
34                                                const std::string& value) {
35  StringPiece result = value;
36  size_t pos = value.rfind('.');
37  if (pos != std::string::npos) {
38    result = result.substr(pos + 1);
39  }
40
41  if (result.empty()) {
42    diag->Error(DiagMessage(source) << "empty symbol");
43    return {};
44  }
45
46  if (!IsJavaIdentifier(result)) {
47    diag->Error(DiagMessage(source) << "invalid Java identifier '" << result << "'");
48    return {};
49  }
50  return result;
51}
52
53static bool WriteSymbol(const Source& source, IDiagnostics* diag, xml::Element* el,
54                        ClassDefinition* class_def) {
55  xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name");
56  if (!attr) {
57    diag->Error(DiagMessage(source) << "<" << el->name << "> must define 'android:name'");
58    return false;
59  }
60
61  Maybe<StringPiece> result =
62      ExtractJavaIdentifier(diag, source.WithLine(el->line_number), attr->value);
63  if (!result) {
64    return false;
65  }
66
67  std::unique_ptr<StringMember> string_member =
68      util::make_unique<StringMember>(result.value(), attr->value);
69  string_member->GetCommentBuilder()->AppendComment(el->comment);
70
71  class_def->AddMember(std::move(string_member));
72  return true;
73}
74
75std::unique_ptr<ClassDefinition> GenerateManifestClass(IDiagnostics* diag, xml::XmlResource* res) {
76  xml::Element* el = xml::FindRootElement(res->root.get());
77  if (!el) {
78    diag->Error(DiagMessage(res->file.source) << "no root tag defined");
79    return {};
80  }
81
82  if (el->name != "manifest" && !el->namespace_uri.empty()) {
83    diag->Error(DiagMessage(res->file.source) << "no <manifest> root tag defined");
84    return {};
85  }
86
87  std::unique_ptr<ClassDefinition> permission_class =
88      util::make_unique<ClassDefinition>("permission", ClassQualifier::kStatic, false);
89  std::unique_ptr<ClassDefinition> permission_group_class =
90      util::make_unique<ClassDefinition>("permission_group", ClassQualifier::kStatic, false);
91
92  bool error = false;
93  std::vector<xml::Element*> children = el->GetChildElements();
94  for (xml::Element* child_el : children) {
95    if (child_el->namespace_uri.empty()) {
96      if (child_el->name == "permission") {
97        error |= !WriteSymbol(res->file.source, diag, child_el, permission_class.get());
98      } else if (child_el->name == "permission-group") {
99        error |= !WriteSymbol(res->file.source, diag, child_el, permission_group_class.get());
100      }
101    }
102  }
103
104  if (error) {
105    return {};
106  }
107
108  std::unique_ptr<ClassDefinition> manifest_class =
109      util::make_unique<ClassDefinition>("Manifest", ClassQualifier::kNone, false);
110  manifest_class->AddMember(std::move(permission_class));
111  manifest_class->AddMember(std::move(permission_group_class));
112  return manifest_class;
113}
114
115}  // namespace aapt
116