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1 #!/usr/bin/env python | |
2 # Copyright (C) 2013 Google Inc. All rights reserved. | |
3 # | |
4 # Redistribution and use in source and binary forms, with or without | |
5 # modification, are permitted provided that the following conditions are | |
6 # met: | |
7 # | |
8 # * Redistributions of source code must retain the above copyright | |
9 # notice, this list of conditions and the following disclaimer. | |
10 # * Redistributions in binary form must reproduce the above | |
11 # copyright notice, this list of conditions and the following disclaimer | |
12 # in the documentation and/or other materials provided with the | |
13 # distribution. | |
14 # * Neither the name of Google Inc. nor the names of its | |
15 # contributors may be used to endorse or promote products derived from | |
16 # this software without specific prior written permission. | |
17 # | |
18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
19 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
20 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
21 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
22 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
23 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
24 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
25 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
26 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
27 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
28 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
29 | |
30 import os.path | |
31 import sys | |
32 import shutil | |
33 | |
34 from in_file import InFile | |
35 import name_macros | |
36 import license | |
37 | |
38 | |
39 HEADER_TEMPLATE = """%(license)s | |
40 | |
41 #ifndef %(class_name)s_h | |
42 #define %(class_name)s_h | |
43 | |
44 namespace WebCore { | |
45 | |
46 typedef int ExceptionCode; | |
47 | |
48 enum ExceptionType { | |
49 %(exception_types)s | |
50 }; | |
51 | |
52 struct ExceptionCodeDescription { | |
53 explicit ExceptionCodeDescription(ExceptionCode); | |
54 | |
55 // |name| is the exception name, also intended for use in exception | |
56 // description strings; 0 if name not known; maximum length is 27 | |
57 // characters. | |
58 const char* name; | |
59 | |
60 // |description| is the exception description, intended for use in | |
61 // exception strings. It is a more readable explanation of error. | |
62 const char* description; | |
63 | |
64 // |code| is the numeric value of the exception within a particular type. | |
65 int code; | |
66 | |
67 ExceptionType type; | |
68 }; | |
69 | |
70 } // namespace WebCore | |
71 | |
72 #endif // %(class_name)s_h | |
73 """ | |
74 | |
75 | |
76 IMPLEMENTATION_TEMPLATE = """%(license)s | |
77 | |
78 #include "config.h" | |
79 #include "%(class_name)s.h" | |
80 | |
81 #include "ExceptionCode.h" | |
82 | |
83 %(includes)s | |
84 | |
85 #include "modules/indexeddb/IDBDatabaseException.h" | |
86 | |
87 namespace WebCore { | |
88 | |
89 ExceptionCodeDescription::ExceptionCodeDescription(ExceptionCode ec) | |
90 { | |
91 ASSERT(ec); | |
92 | |
93 %(description_initalizations)s | |
94 | |
95 // FIXME: This special case for IDB is undesirable. It is the first usage | |
96 // of "new style" DOMExceptions where there is no IDL type, but there are | |
97 // API-specific exception names and/or messages. Consider refactoring back | |
98 // into the code generator when a common pattern emerges. | |
99 if (IDBDatabaseException::initializeDescription(ec, this)) | |
100 return; | |
101 | |
102 if (DOMCoreException::initializeDescription(ec, this)) | |
103 return; | |
104 | |
105 ASSERT_NOT_REACHED(); | |
106 } | |
107 | |
108 } // namespace WebCore | |
109 """ | |
110 | |
111 | |
112 class ExceptionCodeDescriptionWriter(name_macros.Writer): | |
113 defaults = { | |
114 'implementedAs': None, | |
115 'conditional': None, | |
116 } | |
117 default_parameters = { | |
118 'namespace': '', | |
119 } | |
120 | |
121 def __init__(self, in_file_path, enabled_conditions): | |
122 super(ExceptionCodeDescriptionWriter, self).__init__(in_file_path, enabl
ed_conditions) | |
123 self._outputs[(self.class_name + ".cpp")] = self.generate_implementation | |
124 self._outputs[(self.class_name + ".h")] = self.generate_header | |
125 | |
126 def _exceptions(self): | |
127 return self.in_file.name_dictionaries | |
128 | |
129 def _exception_type(self, exception): | |
130 return self.wrap_with_condition(' ' + self._class_name_for_entry(exce
ption) + 'Type,', exception['conditional']) | |
131 | |
132 def generate_header(self): | |
133 return HEADER_TEMPLATE % { | |
134 'license': license.license_for_generated_cpp(), | |
135 'class_name': self.class_name, | |
136 'exception_types': '\n'.join(map(self._exception_type, self._excepti
ons())), | |
137 } | |
138 | |
139 def _include(self, exception): | |
140 include = '#include "' + self._headers_header_include_path(exception) +
'"' | |
141 return self.wrap_with_condition(include, exception['conditional']) | |
142 | |
143 def _description_initalization(self, exception): | |
144 name = os.path.basename(exception['name']) | |
145 if name == 'DOMException': | |
146 return '' # DOMException needs to be last because it's a catch-all. | |
147 description_initalization = """ if (%(name)s::initializeDescription(e
c, this)) | |
148 return;""" % {'name': name} | |
149 return self.wrap_with_condition(description_initalization, exception['co
nditional']) | |
150 | |
151 def generate_implementation(self): | |
152 return IMPLEMENTATION_TEMPLATE % { | |
153 'license': license.license_for_generated_cpp(), | |
154 'class_name': self.class_name, | |
155 'includes': '\n'.join(map(self._include, self._exceptions())), | |
156 'description_initalizations': '\n'.join(map(self._description_inital
ization, self._exceptions())), | |
157 } | |
158 | |
159 | |
160 if __name__ == "__main__": | |
161 name_macros.Maker(ExceptionCodeDescriptionWriter).main(sys.argv) | |
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