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1 # Copyright 2014 The Chromium Authors. All rights reserved. | 1 # Copyright 2014 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 """Utility functions (file reading, simple IDL parsing by regexes) for IDL build
. | 5 """Utility functions (file reading, simple IDL parsing by regexes) for IDL build
. |
6 | 6 |
7 Design doc: http://www.chromium.org/developers/design-documents/idl-build | 7 Design doc: http://www.chromium.org/developers/design-documents/idl-build |
8 """ | 8 """ |
9 | 9 |
10 import os | 10 import os |
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86 def get_parent_interface(file_contents): | 86 def get_parent_interface(file_contents): |
87 match = re.search(r'interface\s+' | 87 match = re.search(r'interface\s+' |
88 r'\w+\s*' | 88 r'\w+\s*' |
89 r':\s*(\w+)\s*' | 89 r':\s*(\w+)\s*' |
90 r'{', | 90 r'{', |
91 file_contents) | 91 file_contents) |
92 return match and match.group(1) | 92 return match and match.group(1) |
93 | 93 |
94 | 94 |
95 def get_interface_extended_attributes_from_idl(file_contents): | 95 def get_interface_extended_attributes_from_idl(file_contents): |
| 96 # Strip comments |
| 97 # re.compile needed b/c Python 2.6 doesn't support flags in re.sub |
| 98 single_line_comment_re = re.compile(r'//.*$', flags=re.MULTILINE) |
| 99 block_comment_re = re.compile(r'/\*.*?\*/', flags=re.MULTILINE | re.DOTALL) |
| 100 file_contents = re.sub(single_line_comment_re, '', file_contents) |
| 101 file_contents = re.sub(block_comment_re, '', file_contents) |
| 102 |
96 match = re.search(r'\[(.*)\]\s*' | 103 match = re.search(r'\[(.*)\]\s*' |
97 r'((callback|partial)\s+)?' | 104 r'((callback|partial)\s+)?' |
98 r'(interface|exception)\s+' | 105 r'(interface|exception)\s+' |
99 r'\w+\s*' | 106 r'\w+\s*' |
100 r'(:\s*\w+\s*)?' | 107 r'(:\s*\w+\s*)?' |
101 r'{', | 108 r'{', |
102 file_contents, flags=re.DOTALL) | 109 file_contents, flags=re.DOTALL) |
103 if not match: | 110 if not match: |
104 return {} | 111 return {} |
105 # Strip comments | 112 |
106 # re.compile needed b/c Python 2.6 doesn't support flags in re.sub | 113 extended_attributes_string = match.group(1) |
107 single_line_comment_re = re.compile(r'//.*$', flags=re.MULTILINE) | |
108 block_comment_re = re.compile(r'/\*.*?\*/', flags=re.MULTILINE | re.DOTALL) | |
109 extended_attributes_string = re.sub(single_line_comment_re, '', match.group(
1)) | |
110 extended_attributes_string = re.sub(block_comment_re, '', extended_attribute
s_string) | |
111 extended_attributes = {} | 114 extended_attributes = {} |
112 # FIXME: this splitting is WRONG: it fails on ExtendedAttributeArgList like | 115 # FIXME: this splitting is WRONG: it fails on ExtendedAttributeArgList like |
113 # 'NamedConstructor=Foo(a, b)' | 116 # 'NamedConstructor=Foo(a, b)' |
114 parts = [extended_attribute.strip() | 117 parts = [extended_attribute.strip() |
115 for extended_attribute in extended_attributes_string.split(',') | 118 for extended_attribute in extended_attributes_string.split(',') |
116 # Discard empty parts, which may exist due to trailing comma | 119 # Discard empty parts, which may exist due to trailing comma |
117 if extended_attribute.strip()] | 120 if extended_attribute.strip()] |
118 for part in parts: | 121 for part in parts: |
119 name, _, value = map(string.strip, part.partition('=')) | 122 name, _, value = map(string.strip, part.partition('=')) |
120 extended_attributes[name] = value | 123 extended_attributes[name] = value |
121 return extended_attributes | 124 return extended_attributes |
122 | 125 |
123 | 126 |
124 def get_put_forward_interfaces_from_idl(file_contents): | 127 def get_put_forward_interfaces_from_idl(file_contents): |
125 put_forwards_pattern = (r'\[[^\]]*PutForwards=[^\]]*\]\s+' | 128 put_forwards_pattern = (r'\[[^\]]*PutForwards=[^\]]*\]\s+' |
126 r'readonly\s+' | 129 r'readonly\s+' |
127 r'attribute\s+' | 130 r'attribute\s+' |
128 r'(\w+)') | 131 r'(\w+)') |
129 return sorted(set(match.group(1) | 132 return sorted(set(match.group(1) |
130 for match in re.finditer(put_forwards_pattern, | 133 for match in re.finditer(put_forwards_pattern, |
131 file_contents, | 134 file_contents, |
132 flags=re.DOTALL))) | 135 flags=re.DOTALL))) |
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