diff options
Diffstat (limited to 'bitbake/lib/bb/parse/parse_py/BBHandler.py')
-rw-r--r-- | bitbake/lib/bb/parse/parse_py/BBHandler.py | 258 |
1 files changed, 258 insertions, 0 deletions
diff --git a/bitbake/lib/bb/parse/parse_py/BBHandler.py b/bitbake/lib/bb/parse/parse_py/BBHandler.py new file mode 100644 index 0000000000..01f22d3b24 --- /dev/null +++ b/bitbake/lib/bb/parse/parse_py/BBHandler.py | |||
@@ -0,0 +1,258 @@ | |||
1 | #!/usr/bin/env python | ||
2 | # ex:ts=4:sw=4:sts=4:et | ||
3 | # -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- | ||
4 | """ | ||
5 | class for handling .bb files | ||
6 | |||
7 | Reads a .bb file and obtains its metadata | ||
8 | |||
9 | """ | ||
10 | |||
11 | |||
12 | # Copyright (C) 2003, 2004 Chris Larson | ||
13 | # Copyright (C) 2003, 2004 Phil Blundell | ||
14 | # | ||
15 | # This program is free software; you can redistribute it and/or modify | ||
16 | # it under the terms of the GNU General Public License version 2 as | ||
17 | # published by the Free Software Foundation. | ||
18 | # | ||
19 | # This program is distributed in the hope that it will be useful, | ||
20 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
21 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
22 | # GNU General Public License for more details. | ||
23 | # | ||
24 | # You should have received a copy of the GNU General Public License along | ||
25 | # with this program; if not, write to the Free Software Foundation, Inc., | ||
26 | # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | ||
27 | |||
28 | from __future__ import absolute_import | ||
29 | import re, bb, os | ||
30 | import logging | ||
31 | import bb.build, bb.utils | ||
32 | from bb import data | ||
33 | |||
34 | from . import ConfHandler | ||
35 | from .. import resolve_file, ast, logger | ||
36 | from .ConfHandler import include, init | ||
37 | |||
38 | # For compatibility | ||
39 | bb.deprecate_import(__name__, "bb.parse", ["vars_from_file"]) | ||
40 | |||
41 | __func_start_regexp__ = re.compile( r"(((?P<py>python)|(?P<fr>fakeroot))\s*)*(?P<func>[\w\.\-\+\{\}\$]+)?\s*\(\s*\)\s*{$" ) | ||
42 | __inherit_regexp__ = re.compile( r"inherit\s+(.+)" ) | ||
43 | __export_func_regexp__ = re.compile( r"EXPORT_FUNCTIONS\s+(.+)" ) | ||
44 | __addtask_regexp__ = re.compile("addtask\s+(?P<func>\w+)\s*((before\s*(?P<before>((.*(?=after))|(.*))))|(after\s*(?P<after>((.*(?=before))|(.*)))))*") | ||
45 | __addhandler_regexp__ = re.compile( r"addhandler\s+(.+)" ) | ||
46 | __def_regexp__ = re.compile( r"def\s+(\w+).*:" ) | ||
47 | __python_func_regexp__ = re.compile( r"(\s+.*)|(^$)" ) | ||
48 | |||
49 | |||
50 | __infunc__ = "" | ||
51 | __inpython__ = False | ||
52 | __body__ = [] | ||
53 | __classname__ = "" | ||
54 | |||
55 | cached_statements = {} | ||
56 | |||
57 | # We need to indicate EOF to the feeder. This code is so messy that | ||
58 | # factoring it out to a close_parse_file method is out of question. | ||
59 | # We will use the IN_PYTHON_EOF as an indicator to just close the method | ||
60 | # | ||
61 | # The two parts using it are tightly integrated anyway | ||
62 | IN_PYTHON_EOF = -9999999999999 | ||
63 | |||
64 | |||
65 | |||
66 | def supports(fn, d): | ||
67 | """Return True if fn has a supported extension""" | ||
68 | return os.path.splitext(fn)[-1] in [".bb", ".bbclass", ".inc"] | ||
69 | |||
70 | def inherit(files, fn, lineno, d): | ||
71 | __inherit_cache = d.getVar('__inherit_cache') or [] | ||
72 | files = d.expand(files).split() | ||
73 | for file in files: | ||
74 | if not os.path.isabs(file) and not file.endswith(".bbclass"): | ||
75 | file = os.path.join('classes', '%s.bbclass' % file) | ||
76 | |||
77 | if not os.path.isabs(file): | ||
78 | dname = os.path.dirname(fn) | ||
79 | bbpath = "%s:%s" % (dname, d.getVar("BBPATH", True)) | ||
80 | abs_fn = bb.utils.which(bbpath, file) | ||
81 | if abs_fn: | ||
82 | file = abs_fn | ||
83 | |||
84 | if not file in __inherit_cache: | ||
85 | logger.log(logging.DEBUG -1, "BB %s:%d: inheriting %s", fn, lineno, file) | ||
86 | __inherit_cache.append( file ) | ||
87 | d.setVar('__inherit_cache', __inherit_cache) | ||
88 | include(fn, file, lineno, d, "inherit") | ||
89 | __inherit_cache = d.getVar('__inherit_cache') or [] | ||
90 | |||
91 | def get_statements(filename, absolute_filename, base_name): | ||
92 | global cached_statements | ||
93 | |||
94 | try: | ||
95 | return cached_statements[absolute_filename] | ||
96 | except KeyError: | ||
97 | file = open(absolute_filename, 'r') | ||
98 | statements = ast.StatementGroup() | ||
99 | |||
100 | lineno = 0 | ||
101 | while True: | ||
102 | lineno = lineno + 1 | ||
103 | s = file.readline() | ||
104 | if not s: break | ||
105 | s = s.rstrip() | ||
106 | feeder(lineno, s, filename, base_name, statements) | ||
107 | file.close() | ||
108 | if __inpython__: | ||
109 | # add a blank line to close out any python definition | ||
110 | feeder(IN_PYTHON_EOF, "", filename, base_name, statements) | ||
111 | |||
112 | if filename.endswith(".bbclass") or filename.endswith(".inc"): | ||
113 | cached_statements[absolute_filename] = statements | ||
114 | return statements | ||
115 | |||
116 | def handle(fn, d, include): | ||
117 | global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __infunc__, __body__, __residue__, __classname__ | ||
118 | __body__ = [] | ||
119 | __infunc__ = "" | ||
120 | __classname__ = "" | ||
121 | __residue__ = [] | ||
122 | |||
123 | |||
124 | if include == 0: | ||
125 | logger.debug(2, "BB %s: handle(data)", fn) | ||
126 | else: | ||
127 | logger.debug(2, "BB %s: handle(data, include)", fn) | ||
128 | |||
129 | base_name = os.path.basename(fn) | ||
130 | (root, ext) = os.path.splitext(base_name) | ||
131 | init(d) | ||
132 | |||
133 | if ext == ".bbclass": | ||
134 | __classname__ = root | ||
135 | __inherit_cache = d.getVar('__inherit_cache') or [] | ||
136 | if not fn in __inherit_cache: | ||
137 | __inherit_cache.append(fn) | ||
138 | d.setVar('__inherit_cache', __inherit_cache) | ||
139 | |||
140 | if include != 0: | ||
141 | oldfile = d.getVar('FILE') | ||
142 | else: | ||
143 | oldfile = None | ||
144 | |||
145 | abs_fn = resolve_file(fn, d) | ||
146 | |||
147 | if include: | ||
148 | bb.parse.mark_dependency(d, abs_fn) | ||
149 | |||
150 | # actual loading | ||
151 | statements = get_statements(fn, abs_fn, base_name) | ||
152 | |||
153 | # DONE WITH PARSING... time to evaluate | ||
154 | if ext != ".bbclass": | ||
155 | d.setVar('FILE', abs_fn) | ||
156 | |||
157 | try: | ||
158 | statements.eval(d) | ||
159 | except bb.parse.SkipPackage: | ||
160 | bb.data.setVar("__SKIPPED", True, d) | ||
161 | if include == 0: | ||
162 | return { "" : d } | ||
163 | |||
164 | if ext != ".bbclass" and include == 0: | ||
165 | return ast.multi_finalize(fn, d) | ||
166 | |||
167 | if oldfile: | ||
168 | d.setVar("FILE", oldfile) | ||
169 | |||
170 | return d | ||
171 | |||
172 | def feeder(lineno, s, fn, root, statements): | ||
173 | global __func_start_regexp__, __inherit_regexp__, __export_func_regexp__, __addtask_regexp__, __addhandler_regexp__, __def_regexp__, __python_func_regexp__, __inpython__, __infunc__, __body__, bb, __residue__, __classname__ | ||
174 | if __infunc__: | ||
175 | if s == '}': | ||
176 | __body__.append('') | ||
177 | ast.handleMethod(statements, fn, lineno, __infunc__, __body__) | ||
178 | __infunc__ = "" | ||
179 | __body__ = [] | ||
180 | else: | ||
181 | __body__.append(s) | ||
182 | return | ||
183 | |||
184 | if __inpython__: | ||
185 | m = __python_func_regexp__.match(s) | ||
186 | if m and lineno != IN_PYTHON_EOF: | ||
187 | __body__.append(s) | ||
188 | return | ||
189 | else: | ||
190 | ast.handlePythonMethod(statements, fn, lineno, __inpython__, | ||
191 | root, __body__) | ||
192 | __body__ = [] | ||
193 | __inpython__ = False | ||
194 | |||
195 | if lineno == IN_PYTHON_EOF: | ||
196 | return | ||
197 | |||
198 | if s and s[0] == '#': | ||
199 | if len(__residue__) != 0 and __residue__[0][0] != "#": | ||
200 | bb.fatal("There is a comment on line %s of file %s (%s) which is in the middle of a multiline expression.\nBitbake used to ignore these but no longer does so, please fix your metadata as errors are likely as a result of this change." % (lineno, fn, s)) | ||
201 | |||
202 | if len(__residue__) != 0 and __residue__[0][0] == "#" and (not s or s[0] != "#"): | ||
203 | bb.fatal("There is a confusing multiline, partially commented expression on line %s of file %s (%s).\nPlease clarify whether this is all a comment or should be parsed." % (lineno, fn, s)) | ||
204 | |||
205 | if s and s[-1] == '\\': | ||
206 | __residue__.append(s[:-1]) | ||
207 | return | ||
208 | |||
209 | s = "".join(__residue__) + s | ||
210 | __residue__ = [] | ||
211 | |||
212 | # Skip empty lines | ||
213 | if s == '': | ||
214 | return | ||
215 | |||
216 | # Skip comments | ||
217 | if s[0] == '#': | ||
218 | return | ||
219 | |||
220 | m = __func_start_regexp__.match(s) | ||
221 | if m: | ||
222 | __infunc__ = m.group("func") or "__anonymous" | ||
223 | ast.handleMethodFlags(statements, fn, lineno, __infunc__, m) | ||
224 | return | ||
225 | |||
226 | m = __def_regexp__.match(s) | ||
227 | if m: | ||
228 | __body__.append(s) | ||
229 | __inpython__ = m.group(1) | ||
230 | |||
231 | return | ||
232 | |||
233 | m = __export_func_regexp__.match(s) | ||
234 | if m: | ||
235 | ast.handleExportFuncs(statements, fn, lineno, m, __classname__) | ||
236 | return | ||
237 | |||
238 | m = __addtask_regexp__.match(s) | ||
239 | if m: | ||
240 | ast.handleAddTask(statements, fn, lineno, m) | ||
241 | return | ||
242 | |||
243 | m = __addhandler_regexp__.match(s) | ||
244 | if m: | ||
245 | ast.handleBBHandlers(statements, fn, lineno, m) | ||
246 | return | ||
247 | |||
248 | m = __inherit_regexp__.match(s) | ||
249 | if m: | ||
250 | ast.handleInherit(statements, fn, lineno, m) | ||
251 | return | ||
252 | |||
253 | return ConfHandler.feeder(lineno, s, fn, statements) | ||
254 | |||
255 | # Add us to the handlers list | ||
256 | from .. import handlers | ||
257 | handlers.append({'supports': supports, 'handle': handle, 'init': init}) | ||
258 | del handlers | ||