ManifestClassGenerator.cpp revision ce5e56e243d262a9b65459c3bd0bb9eaadd40628 
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 "util/Maybe.h"
25#include "xml/XmlDom.h"
26
27namespace aapt {
28
29static Maybe<StringPiece> ExtractJavaIdentifier(IDiagnostics* diag,
30                                                const Source& source,
31                                                const StringPiece& value) {
32  const StringPiece sep = ".";
33  auto iter = std::find_end(value.begin(), value.end(), sep.begin(), sep.end());
34
35  StringPiece result;
36  if (iter != value.end()) {
37    result.assign(iter + sep.size(), value.end() - (iter + sep.size()));
38  } else {
39    result = value;
40  }
41
42  if (result.empty()) {
43    diag->Error(DiagMessage(source) << "empty symbol");
44    return {};
45  }
46
47  iter = util::FindNonAlphaNumericAndNotInSet(result, "_");
48  if (iter != result.end()) {
49    diag->Error(DiagMessage(source) << "invalid character '"
50                                    << StringPiece(iter, 1) << "' in '"
51                                    << result << "'");
52    return {};
53  }
54
55  if (*result.begin() >= '0' && *result.begin() <= '9') {
56    diag->Error(DiagMessage(source) << "symbol can not start with a digit");
57    return {};
58  }
59
60  return result;
61}
62
63static bool WriteSymbol(const Source& source, IDiagnostics* diag,
64                        xml::Element* el, ClassDefinition* class_def) {
65  xml::Attribute* attr = el->FindAttribute(xml::kSchemaAndroid, "name");
66  if (!attr) {
67    diag->Error(DiagMessage(source) << "<" << el->name
68                                    << "> must define 'android:name'");
69    return false;
70  }
71
72  Maybe<StringPiece> result = ExtractJavaIdentifier(
73      diag, source.WithLine(el->line_number), attr->value);
74  if (!result) {
75    return false;
76  }
77
78  std::unique_ptr<StringMember> string_member =
79      util::make_unique<StringMember>(result.value(), attr->value);
80  string_member->GetCommentBuilder()->AppendComment(el->comment);
81
82  class_def->AddMember(std::move(string_member));
83  return true;
84}
85
86std::unique_ptr<ClassDefinition> GenerateManifestClass(IDiagnostics* diag,
87                                                       xml::XmlResource* res) {
88  xml::Element* el = xml::FindRootElement(res->root.get());
89  if (!el) {
90    diag->Error(DiagMessage(res->file.source) << "no root tag defined");
91    return {};
92  }
93
94  if (el->name != "manifest" && !el->namespace_uri.empty()) {
95    diag->Error(DiagMessage(res->file.source)
96                << "no <manifest> root tag defined");
97    return {};
98  }
99
100  std::unique_ptr<ClassDefinition> permission_class =
101      util::make_unique<ClassDefinition>("permission", ClassQualifier::Static,
102                                         false);
103  std::unique_ptr<ClassDefinition> permission_group_class =
104      util::make_unique<ClassDefinition>("permission_group",
105                                         ClassQualifier::Static, false);
106
107  bool error = false;
108  std::vector<xml::Element*> children = el->GetChildElements();
109  for (xml::Element* child_el : children) {
110    if (child_el->namespace_uri.empty()) {
111      if (child_el->name == "permission") {
112        error |= !WriteSymbol(res->file.source, diag, child_el,
113                              permission_class.get());
114      } else if (child_el->name == "permission-group") {
115        error |= !WriteSymbol(res->file.source, diag, child_el,
116                              permission_group_class.get());
117      }
118    }
119  }
120
121  if (error) {
122    return {};
123  }
124
125  std::unique_ptr<ClassDefinition> manifest_class =
126      util::make_unique<ClassDefinition>("Manifest", ClassQualifier::None,
127                                         false);
128  manifest_class->AddMember(std::move(permission_class));
129  manifest_class->AddMember(std::move(permission_group_class));
130  return manifest_class;
131}
132
133}  // namespace aapt
134