/usr/share/pyshared/guppy/gsl/SpecNodes.py is in python-guppy 0.1.9-2ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 | #._cv_part guppy.gsl.SpecNodes
##
# Specification entity object
#
# Collects information about a particular system entity or aspect.
#
# The entity is of a general kind
# It is defined by the particular aspects defined for it
# The aspects must be 'compatible', which can be relatively checked.
# The specobject is used for:
# * generating tests
# * generating docs
# * generating help
# * by creating docstrings
# * by providing interactive help
#
# For test generation, it will delegate to test implementators.
# For doc generation, it will delegate to doc implementators.
#
# The functionality needed here is therefore limited.
#
# name
# aspects
#
# There is one predefine root
# - should we call it Universe?
#
# The name can be full, a dotted name, or the short, last part.
#
# The name is treated as an aspect.
#
# Each aspect definition has a primary kind
# Aspect kinds
from guppy.gsl.Exceptions import *
class SpecObject:
def __init__(self, mod):
self.mod = mod
##
# Specification environment
# Collects specifications from several files
# Maps names to specification objects
class SpecEnv:
def __init__(self, mod):
self.mod = mod
self.unknown_nodes = []
self.files = []
def visit_default(self, node):
print 'add_unknown', node.tag
self.unknown_nodes.append(node)
def visit_file(self, node):
print 'visit_file'
file = FileEnv(self, node)
self.files.append(file)
def get_predefined_subjects(self, env):
return (GuppyWorld(env),)
class FileEnv:
def __init__(self, env, node):
mod = env.mod
self.mod = mod
self.name = self.filename = node.arg
self.subjects = {}
for s in env.get_predefined_subjects(self):
self.subjects[s.name] = s
file = Subject(self, node, self.name)
node.children_accept(file)
def visit_aspects_of(self, node):
name = node.arg
subject = self.find_subject(node, name)
subject.add_aspects(node)
def def_subject(self, node, name, subject):
if name in self.subjects:
self.error_node(node, 'Redefinition of %r.'%name)
self.error_node(self.subjects[name].node, 'Previous definition of %r.'%name)
else:
self.subjects[name] = subject
def error_node(self, node, msg, exception=None):
index = node.index
lineno = index + 1
if 0:
print '%s:%d: %s,'%(self.filename, lineno, msg)
print 'in line %r.'%self.get_line(index)
else:
print '%s:%s:'% (self.filename, lineno)
print ' %r'%self.get_line(index)
print ' %s'%msg
print
def find_subject(self, node, name):
subject = self.subjects.get(name)
if subject is None:
self.error_node(node, 'No such subject: %r.'%name)
return subject
def get_line(self, index):
try:
text = list(open(self.filename).readlines())[index].rstrip()
except:
text = None
return text
def get_subject(self, name):
subject = self.subjects.get(name)
if subject is None:
subject = self.subjects[name] = Subject(self, name)
return subject
def get_aspect_subject(self, env, node):
name = env.name+'::'+node.tag
return self.get_subject(name)
class Subject:
def __init__(self, file, node, name):
self.file = file
self.node = node
self.name = name
self.aspects = []
def visit_default(self, node):
of = node.tag.endswith('_of')
name = node.arg
define = name.startswith(':')
if define:
if of:
self.file.error_node(node, "Both 'of' and '::'.")
name = name[1:].strip()
if of:
ofsubject = self.file.find_subject(node, name)
subject = self.new_subject_of(node, ofsubject)
else:
subject = Subject(self.file, node, name)
if define:
self.file.def_subject(node, name, subject)
self.aspects.append(subject)
node.children_accept(subject)
def new_subject_of(self, node, of):
tag = node.tag
if tag == 'aspects_of':
return AspectsOf(self.file, node, of)
else:
return SubjectOf(self.file, node, of)
class AspectsOf(Subject):
def __init__(self, file, node, of):
self.node = node
self.of = of
self.aspects = []
def visit_default(self, node):
self.of.visit_default(node)
class SubjectOf(Subject):
def __init__(self, file, node, of):
self.node = node
self.of = of
self.aspects = []
class GuppyWorld(Subject):
def __init__(self, env):
self.file = env
self.name = "Guppy World"
self.node = None
self.aspects = []
##
# A node represented with argument splitted in components of the form:
# .tag: arg
# text
# ..child
# ...
# ..child
# ...
#
# @param tag the text of the first line before the colon
# @param arg the text of the first line after the colon (stripped)
# @param text the text after the the first line before the first children
# @param children the child nodes
# @param index line index
# @param src describes the source
class SpecNode(object):
__slots__ = 'tag', 'arg', 'children', 'index', 'src'
def __init__(self, tag, arg, children=(), index=0, src=None):
self.tag = tag
self.arg = arg
self.children = tuple(children)
self.index = index
self.src = src
def __repr__(self):
return '%s(%r,%r,%r)'%(
self.__class__.__name__, self.tag, self.arg, self.children)
def __str__(self):
return '%s(%r,%r,%s)'%(
self.__class__.__name__, self.tag, self.arg,
'(%s)'%(','.join([str(c) for c in self.children])))
def arg_accept(self, visitor, prefix='visit_'):
if self.arg:
node = SpecNode('text', self.arg, (), self.index)
node.accept(visitor, prefix)
self.children_accept(visitor, prefix)
def copy(self, tag=None, arg=None, children=None, index=None, src=None):
if tag is None:
tag = self.tag
if arg is None:
arg = self.arg
if children is None:
children = self.children
if index is None:
index = self.index
if src is None:
src = self.src
return self.__class__(tag, arg, children, index, src)
def children_accept(self, visitor, prefix='visit_'):
for c in self.children:
c.accept(visitor, prefix)
def accept(self, visitor, prefix='visit_'):
m = getattr(visitor, (prefix+self.tag), None)
if m is None:
m = getattr(visitor, (prefix+'default'), None)
if m is None:
msg = 'accept: unknown: %r, %r in %r'%(prefix, self.tag, visitor)
print msg
raise ValueError, msg
return
m(self)
def error(self, msg, node=None):
if node is None:
node = self
node.src.error(msg, node)
def get_text(self):
" Get the total text of all text children, joined with and ended with '\n' "
text = []
for c in self.children:
if c.tag == 'text':
text.append(c.arg)
if not c.arg.endswith('\n'):
text.append('\n')
return ''.join(text)
def get_arg(self):
arg = self.arg.strip()
if arg.startswith(':'):
arg = arg[1:].strip()
return arg
def get_arglist(self):
arg = self.arg
if arg.startswith(':'):
arg = arg[1:]
names = [x.strip() for x in arg.split(',')]
if names == ['']:
names = []
return names
def get_arg_children(self):
if self.arg:
children = [SpecNode('text', self.arg, (), self.index, self.src)]
children.extend(self.children)
else:
children = self.children
return children
def get_arg_rest(self, nostrip=0):
arg = self.arg
if not nostrip:
arg = arg.strip()
return arg, self.children
def get_arg_norest(self):
''' Get the arg as by self.arg,
but make sure there are no more children.
'''
if self.children:
raise SyntaxError, 'No children nodes expected in node: %s'%self
return self.arg.strip()
def get_namearg(self):
''' Get the argument in the form of a name
It is the argument stripped.
And not allowed to contain : or , or new line.
'''
name = self.arg.strip()
if '\n' in name or ':' in name or ',' in name:
raise SyntaxError, 'Invalid name: %r'%name
return name
def split_attrs(self, tag=None, attrdict=False):
if tag is None:
tag = self.tag
if attrdict:
attrs = {}
def addattr(tag, attr, node):
if tag in attrs:
node.error('Duplicate attribute: %s'%attr)
else:
attrs[tag] = attr
else:
attrs = []
def addattr(tag, attr, node):
attrs.append((tag, attr))
children = []
for ch in self.children:
if ch.tag == "with":
for opt in ch.children:
if opt.arg:
arg = opt.arg
else:
self.error('Bad attribute, no argument.', opt)
if opt.children:
self.error('Expected no children to attribute.', opt.children[0])
if opt.arg:
addattr(opt.tag, arg, opt)
elif ch.tag[-1:] == '=':
addattr(ch.tag[:-1], ch.arg, ch)
else:
children.append(ch)
if len(children) == len(self.children):
node = self
else:
node = self.__class__(
tag, self.arg, children, self.index, self.src)
return node, attrs
class Source:
def __init__(self, name, lines=None, string=None, nostrip=0, debug=0, max_errors=10):
self.filename = name
self.lines = lines
self.string = string
self.nostrip = nostrip
self.debug = debug
self.error_reports = []
self.max_errors = max_errors
self.num_warnings = 0
self.num_errors = 0
def errmsg_context(self, context):
linetext = ''
filename = '<unknown file>'
if context is not None:
if hasattr(context, 'index'):
index = context.index
src = context.src
else:
index = context
src = self
if src is not None:
filename = src.filename
linetext = src.get_line(index=index)
print '%s:%s:'% (filename, index+1)
if linetext:
print ' %s'%linetext
def error(self, message, context=None, exception=None, more=(), harmless = 0):
self.error_reports.append((message, context, exception, more, harmless))
if harmless:
self.num_warnings += 1
else:
self.num_errors += 1
self.errmsg_context(context)
if harmless:
print '* %s'%message
else:
print '*** %s'%message
print
for msg, ctx in more:
self.errmsg_context(ctx)
print ' %s'%msg
print
if self.debug:
set_trace()
else:
if self.num_errors >= self.max_errors:
raise TooManyErrors, 'Too many errors, giving up'
if exception is not None:
raise exception
def get_line(self, index):
if self.lines is None:
if self.string is None:
if self.filename:
try:
self.string = open(self.filename).read()
except:
return ''
else:
return ''
self.lines = self.string.split('\n')
return self.lines[index]
class _GLUECLAMP_:
_chgable_ = 'nodemap', 'SpecNode'
_imports_ = (
'_parent:DottedTree',
'_root:re',
'_root:os',
)
node_aliases_defs = (
('attr' , 'attribute'),
('c' , 'comment'),
('cond' , 'condition'),
('d' , 'description'),
('dwh' , 'description_with_header'),
('eg' , 'example'),
('fop' , 'function_operator'),
('iop' , 'inplace_operator'),
('ka' , 'key_arg'),
('op' , 'operator'),
('rop' , 'reverse_operator'),
('t' , 'text'),
)
def _get_node_aliases(self):
return dict(self.node_aliases_defs)
def _get_reverse_node_aliases(self):
# Used to make names shorter
return dict([(v, k) for k, v in self.node_aliases_defs])
def _get_is_not_ascii(self):
return self.re.compile(eval(r'u"[\u0080-\uffff]"')).search
##
# @return A tuple of predefined subjects.
def get_predefined_subjects(self):
return (GuppyWorld(self),)
##
# Parses a file and makes a tree of nodes
# @param file name of file containing a dotted tree
# @return a SpecNode object
# @more
# First tag is special.
# We don't interpret the first line of the file,
# but uses a special file tag.
def node_of_file(self, file, nostrip=0):
src = Source(name=file, nostrip=nostrip)
dtree = self.DottedTree.parse_file(file, src)
tag = 'file'
arg = file
text = dtree.tag.strip()
children = self.nodes_of_dforest(dtree.children, src)
index = dtree.index
return self.node_of_tatci(tag, arg, text, children, index, src)
def node_of_string(self, string, name='<string>', nostrip=0):
dtree = self.DottedTree.parse_string(string)
tag = 'string'
arg = name
src = Source(name=name, string=string, nostrip=nostrip)
text = dtree.tag.strip()
index = dtree.index
children = self.nodes_of_dforest(dtree.children, src)
return self.node_of_tatci(tag, arg, text, children, index, src)
def node_of_dtree(self, dtree, src):
tag = dtree.tag
textpos = tag.find('\n')
if textpos == -1:
textpos = len(tag)
equpos = tag.find('=', 0, textpos)
colonpos = tag.find(':', 0, textpos)
if equpos != -1 and (colonpos == -1 or equpos < colonpos):
tag, arg = (tag[:equpos].strip()+'=',
tag[equpos+1:].strip())
else:
if colonpos == -1:
if not ' ' in tag[:textpos] or textpos >= len(tag.rstrip()):
colonpos = textpos
else:
raise SyntaxError, 'No colon in spaced tag in node %s'%dtree
tag, arg = (tag[:colonpos].strip(),
tag[colonpos+1:]
)
if tag in self.node_aliases:
tag = self.node_aliases[tag]
tag = tag.replace(' ', '_')
if tag != 'text' and not src.nostrip:
arg = arg.strip()
children = self.nodes_of_dforest(dtree.children, src)
return self.node_of_taci(tag, arg, children, dtree.index, src)
def nodes_of_dforest(self, dforest, src):
onodes = [self.node_of_dtree(c, src) for c in dforest]
nodes = []
for node in onodes:
if node.tag != 'include':
nodes.append(node)
continue
filename = node.arg.strip()
filename = self.os.path.join(self.os.path.dirname(src.filename),
filename)
node = self.node_of_file(filename, nostrip=src.nostrip)
nodes.extend(node.children)
return tuple(nodes)
def _get_node_of_taci(self):
return SpecNode
def node_of_tatci(self, tag, arg, text, children=(), index=0, src=None):
if text:
if tag == 'text':
if arg:
arg = arg + '\n'+ text
else:
arg = text
else:
children = (self.node_of_taci('text', text, (), index, src),) + children
return self.node_of_taci(tag, arg, children, index, src)
def node_of_text(self, text):
# Returns a node that is either
# - a 'text' node, if text was all ascii
# - a 'char' node, if text was a single non-ascii
# - a 'block' with children being a sequence of char and text nodes,
# if text contained ascii and non-ascii characters
nodes = self.nodes_of_text(text)
if len(nodes) == 1:
return nodes[0]
else:
return self.node_of_taci('block', '', nodes)
def nodes_of_text(self, text):
# Returns a sequence of nodes, encoding text.
nodes = []
if self.is_not_ascii(text):
chars = []
for char in text:
no = ord(char)
if no < 128:
chars.append(char)
else:
if chars:
nodes.append(self.node_of_taci('text', ''.join(chars)))
chars = []
nodes.append(self.node_of_taci('char', str(no)))
if chars:
nodes.append(self.node_of_taci('text', ''.join(chars)))
else:
nodes.append(self.node_of_taci('text', text))
return nodes
def main(self, package):
root = self._root
specs = package.specs
specdir = root.os.path.dirname(specs._module.__file__)
print specdir
main_dt_name = root.os.path.join(specdir, "main.gsl")
env = self.SpecEnv(self)
node = self.node_of_file(main_dt_name)
node.accept(env)
import __main__
__main__.env = env
return
def print_doc(self, dt):
self.print_doc()
def unparse_head(self, level, tag, arg, text):
head = tag
if arg:
head = head + ': ' + arg
if text:
head = head + '\n' + text
tag = self.DottedTree.unparse_tag(level, head)
return tag
def test_main():
from guppy import Root
root = Root()
sp = root.guppy.gsl.SpecNodes
root.guppy.gsl.SpecNodes.main(root.guppy)
if 0 or __name__ == '__main__':
test_main()
|