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1 #!/usr/bin/env python | |
2 # Copyright (c) 2012 The Chromium Authors. All rights reserved. | |
3 # Use of this source code is governed by a BSD-style license that can be | |
4 # found in the LICENSE file. | |
5 | |
6 '''Maps each node type to an implementation class. | |
7 When adding a new node type, you add to this mapping. | |
8 ''' | |
9 | |
10 | |
11 from grit import exception | |
12 | |
13 from grit.node import empty | |
14 from grit.node import message | |
15 from grit.node import misc | |
16 from grit.node import variant | |
17 from grit.node import structure | |
18 from grit.node import include | |
19 from grit.node import io | |
20 | |
21 | |
22 _ELEMENT_TO_CLASS = { | |
23 'identifiers' : empty.IdentifiersNode, | |
24 'includes' : empty.IncludesNode, | |
25 'messages' : empty.MessagesNode, | |
26 'outputs' : empty.OutputsNode, | |
27 'structures' : empty.StructuresNode, | |
28 'translations' : empty.TranslationsNode, | |
29 'include' : include.IncludeNode, | |
30 'emit' : io.EmitNode, | |
31 'file' : io.FileNode, | |
32 'output' : io.OutputNode, | |
33 'ex' : message.ExNode, | |
34 'message' : message.MessageNode, | |
35 'ph' : message.PhNode, | |
36 'else' : misc.ElseNode, | |
37 'grit' : misc.GritNode, | |
38 'identifier' : misc.IdentifierNode, | |
39 'if' : misc.IfNode, | |
40 'part' : misc.PartNode, | |
41 'release' : misc.ReleaseNode, | |
42 'then' : misc.ThenNode, | |
43 'structure' : structure.StructureNode, | |
44 'skeleton' : variant.SkeletonNode, | |
45 } | |
46 | |
47 | |
48 def ElementToClass(name, typeattr): | |
49 '''Maps an element to a class that handles the element. | |
50 | |
51 Args: | |
52 name: 'element' (the name of the element) | |
53 typeattr: 'type' (the value of the type attribute, if present, else None) | |
54 | |
55 Return: | |
56 type | |
57 ''' | |
58 if name not in _ELEMENT_TO_CLASS: | |
59 raise exception.UnknownElement() | |
60 return _ELEMENT_TO_CLASS[name] | |
61 | |
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