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https://github.com/python/cpython.git
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- pedantic: make sure "python -t" doesn't complain...
This commit is contained in:
Fredrik Lundh
parent
df02d0b3f0
commit
90a0791322
4 changed files with 576 additions and 576 deletions
814
Lib/sre_parse.py
814
Lib/sre_parse.py
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@ -67,106 +67,106 @@ FLAGS = {
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class State:
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def __init__(self):
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self.flags = 0
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self.groups = 1
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self.groupdict = {}
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self.flags = 0
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self.groups = 1
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self.groupdict = {}
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def getgroup(self, name=None):
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gid = self.groups
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self.groups = gid + 1
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if name:
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self.groupdict[name] = gid
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return gid
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gid = self.groups
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self.groups = gid + 1
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if name:
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self.groupdict[name] = gid
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return gid
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class SubPattern:
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# a subpattern, in intermediate form
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def __init__(self, pattern, data=None):
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self.pattern = pattern
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if not data:
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data = []
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self.data = data
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self.width = None
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self.pattern = pattern
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if not data:
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data = []
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self.data = data
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self.width = None
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def __repr__(self):
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return repr(self.data)
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return repr(self.data)
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def __len__(self):
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return len(self.data)
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return len(self.data)
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def __delitem__(self, index):
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del self.data[index]
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del self.data[index]
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def __getitem__(self, index):
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return self.data[index]
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return self.data[index]
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def __setitem__(self, index, code):
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self.data[index] = code
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self.data[index] = code
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def __getslice__(self, start, stop):
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return SubPattern(self.pattern, self.data[start:stop])
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return SubPattern(self.pattern, self.data[start:stop])
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def insert(self, index, code):
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self.data.insert(index, code)
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self.data.insert(index, code)
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def append(self, code):
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self.data.append(code)
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self.data.append(code)
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def getwidth(self):
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# determine the width (min, max) for this subpattern
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if self.width:
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return self.width
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lo = hi = 0L
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for op, av in self.data:
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if op is BRANCH:
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l = sys.maxint
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h = 0
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for av in av[1]:
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i, j = av.getwidth()
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l = min(l, i)
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h = min(h, j)
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lo = lo + i
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hi = hi + j
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elif op is CALL:
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i, j = av.getwidth()
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lo = lo + i
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hi = hi + j
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elif op is SUBPATTERN:
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i, j = av[1].getwidth()
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lo = lo + i
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hi = hi + j
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elif op in (MIN_REPEAT, MAX_REPEAT):
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i, j = av[2].getwidth()
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lo = lo + long(i) * av[0]
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hi = hi + long(j) * av[1]
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elif op in (ANY, RANGE, IN, LITERAL, NOT_LITERAL, CATEGORY):
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lo = lo + 1
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hi = hi + 1
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elif op == SUCCESS:
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break
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self.width = int(min(lo, sys.maxint)), int(min(hi, sys.maxint))
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return self.width
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# determine the width (min, max) for this subpattern
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if self.width:
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return self.width
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lo = hi = 0L
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for op, av in self.data:
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if op is BRANCH:
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l = sys.maxint
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h = 0
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for av in av[1]:
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i, j = av.getwidth()
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l = min(l, i)
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h = min(h, j)
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lo = lo + i
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hi = hi + j
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elif op is CALL:
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i, j = av.getwidth()
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lo = lo + i
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hi = hi + j
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elif op is SUBPATTERN:
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i, j = av[1].getwidth()
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lo = lo + i
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hi = hi + j
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elif op in (MIN_REPEAT, MAX_REPEAT):
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i, j = av[2].getwidth()
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lo = lo + long(i) * av[0]
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hi = hi + long(j) * av[1]
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elif op in (ANY, RANGE, IN, LITERAL, NOT_LITERAL, CATEGORY):
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lo = lo + 1
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hi = hi + 1
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elif op == SUCCESS:
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break
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self.width = int(min(lo, sys.maxint)), int(min(hi, sys.maxint))
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return self.width
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class Tokenizer:
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def __init__(self, string):
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self.index = 0
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self.string = string
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self.next = self.__next()
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self.index = 0
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self.string = string
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self.next = self.__next()
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def __next(self):
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if self.index >= len(self.string):
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return None
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char = self.string[self.index]
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if char[0] == "\\":
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try:
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c = self.string[self.index + 1]
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except IndexError:
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raise error, "bogus escape"
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char = char + c
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self.index = self.index + len(char)
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return char
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if self.index >= len(self.string):
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return None
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char = self.string[self.index]
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if char[0] == "\\":
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try:
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c = self.string[self.index + 1]
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except IndexError:
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raise error, "bogus escape"
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char = char + c
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self.index = self.index + len(char)
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return char
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def match(self, char):
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if char == self.next:
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self.next = self.__next()
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return 1
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return 0
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if char == self.next:
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self.next = self.__next()
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return 1
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return 0
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def match_set(self, set):
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if self.next and self.next in set:
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self.next = self.__next()
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return 1
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return 0
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if self.next and self.next in set:
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self.next = self.__next()
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return 1
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return 0
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def get(self):
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this = self.next
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self.next = self.__next()
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return this
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this = self.next
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self.next = self.__next()
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return this
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def isident(char):
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return "a" <= char <= "z" or "A" <= char <= "Z" or char == "_"
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@ -180,83 +180,83 @@ def isname(name):
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# expression instead, but I seem to have certain bootstrapping
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# problems here ;-)
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if not isident(name[0]):
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return 0
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return 0
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for char in name:
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if not isident(char) and not isdigit(char):
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return 0
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if not isident(char) and not isdigit(char):
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return 0
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return 1
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def _group(escape, groups):
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# check if the escape string represents a valid group
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try:
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group = int(escape[1:])
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if group and group < groups:
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return group
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group = int(escape[1:])
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if group and group < groups:
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return group
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except ValueError:
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pass
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pass
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return None # not a valid group
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def _class_escape(source, escape):
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# handle escape code inside character class
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code = ESCAPES.get(escape)
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if code:
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return code
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return code
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code = CATEGORIES.get(escape)
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if code:
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return code
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return code
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try:
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if escape[1:2] == "x":
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while source.next in HEXDIGITS:
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escape = escape + source.get()
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escape = escape[2:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-4:], 16) & 0xff)
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elif str(escape[1:2]) in OCTDIGITS:
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while source.next in OCTDIGITS:
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escape = escape + source.get()
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escape = escape[1:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-6:], 8) & 0xff)
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if len(escape) == 2:
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return LITERAL, escape[1]
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if escape[1:2] == "x":
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while source.next in HEXDIGITS:
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escape = escape + source.get()
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escape = escape[2:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-4:], 16) & 0xff)
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elif str(escape[1:2]) in OCTDIGITS:
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while source.next in OCTDIGITS:
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escape = escape + source.get()
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escape = escape[1:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-6:], 8) & 0xff)
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if len(escape) == 2:
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return LITERAL, escape[1]
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except ValueError:
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pass
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pass
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raise error, "bogus escape: %s" % repr(escape)
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def _escape(source, escape, state):
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# handle escape code in expression
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code = CATEGORIES.get(escape)
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if code:
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return code
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return code
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code = ESCAPES.get(escape)
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if code:
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return code
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return code
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try:
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if escape[1:2] == "x":
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while source.next in HEXDIGITS:
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escape = escape + source.get()
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escape = escape[2:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-4:], 16) & 0xff)
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elif escape[1:2] in DIGITS:
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while 1:
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group = _group(escape, state.groups)
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if group:
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if (not source.next or
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not _group(escape + source.next, state.groups)):
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return GROUP, group
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escape = escape + source.get()
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elif source.next in OCTDIGITS:
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escape = escape + source.get()
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else:
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break
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escape = escape[1:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-6:], 8) & 0xff)
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if len(escape) == 2:
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return LITERAL, escape[1]
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if escape[1:2] == "x":
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while source.next in HEXDIGITS:
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escape = escape + source.get()
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escape = escape[2:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-4:], 16) & 0xff)
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elif escape[1:2] in DIGITS:
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while 1:
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group = _group(escape, state.groups)
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if group:
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if (not source.next or
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not _group(escape + source.next, state.groups)):
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return GROUP, group
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escape = escape + source.get()
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elif source.next in OCTDIGITS:
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escape = escape + source.get()
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else:
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break
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escape = escape[1:]
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# FIXME: support unicode characters!
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return LITERAL, chr(int(escape[-6:], 8) & 0xff)
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if len(escape) == 2:
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return LITERAL, escape[1]
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except ValueError:
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pass
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pass
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raise error, "bogus escape: %s" % repr(escape)
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@ -268,35 +268,35 @@ def _branch(pattern, items):
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# check if all items share a common prefix
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while 1:
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prefix = None
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for item in items:
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if not item:
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break
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if prefix is None:
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prefix = item[0]
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elif item[0] != prefix:
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break
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else:
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# all subitems start with a common "prefix".
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# move it out of the branch
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for item in items:
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del item[0]
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subpattern.append(prefix)
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continue # check next one
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break
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prefix = None
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for item in items:
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if not item:
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break
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if prefix is None:
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prefix = item[0]
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elif item[0] != prefix:
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break
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else:
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# all subitems start with a common "prefix".
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# move it out of the branch
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for item in items:
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del item[0]
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subpattern.append(prefix)
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continue # check next one
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break
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# check if the branch can be replaced by a character set
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for item in items:
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if len(item) != 1 or item[0][0] != LITERAL:
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break
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if len(item) != 1 or item[0][0] != LITERAL:
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break
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else:
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# we can store this as a character set instead of a
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# branch (FIXME: use a range if possible)
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set = []
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for item in items:
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set.append(item[0])
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subpattern.append((IN, set))
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return subpattern
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# we can store this as a character set instead of a
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# branch (FIXME: use a range if possible)
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set = []
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for item in items:
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set.append(item[0])
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subpattern.append((IN, set))
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return subpattern
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subpattern.append((BRANCH, (None, items)))
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return subpattern
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@ -309,197 +309,197 @@ def _parse(source, state, flags=0):
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while 1:
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if source.next in ("|", ")"):
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break # end of subpattern
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this = source.get()
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if this is None:
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break # end of pattern
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if source.next in ("|", ")"):
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break # end of subpattern
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this = source.get()
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if this is None:
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break # end of pattern
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if state.flags & SRE_FLAG_VERBOSE:
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# skip whitespace and comments
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if this in WHITESPACE:
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continue
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if this == "#":
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while 1:
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this = source.get()
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if this in (None, "\n"):
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break
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continue
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if state.flags & SRE_FLAG_VERBOSE:
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# skip whitespace and comments
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if this in WHITESPACE:
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continue
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if this == "#":
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while 1:
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this = source.get()
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if this in (None, "\n"):
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break
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continue
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if this and this[0] not in SPECIAL_CHARS:
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subpattern.append((LITERAL, this))
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if this and this[0] not in SPECIAL_CHARS:
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subpattern.append((LITERAL, this))
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elif this == "[":
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# character set
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set = []
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## if source.match(":"):
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## pass # handle character classes
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if source.match("^"):
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set.append((NEGATE, None))
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# check remaining characters
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start = set[:]
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while 1:
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this = source.get()
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if this == "]" and set != start:
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break
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elif this and this[0] == "\\":
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code1 = _class_escape(source, this)
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elif this:
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code1 = LITERAL, this
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else:
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raise error, "unexpected end of regular expression"
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if source.match("-"):
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# potential range
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this = source.get()
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if this == "]":
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set.append(code1)
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set.append((LITERAL, "-"))
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break
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else:
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if this[0] == "\\":
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code2 = _class_escape(source, this)
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else:
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code2 = LITERAL, this
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if code1[0] != LITERAL or code2[0] != LITERAL:
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raise error, "illegal range"
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if len(code1[1]) != 1 or len(code2[1]) != 1:
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raise error, "illegal range"
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set.append((RANGE, (code1[1], code2[1])))
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else:
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if code1[0] is IN:
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code1 = code1[1][0]
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set.append(code1)
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elif this == "[":
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# character set
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set = []
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## if source.match(":"):
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## pass # handle character classes
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if source.match("^"):
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set.append((NEGATE, None))
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# check remaining characters
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start = set[:]
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while 1:
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this = source.get()
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if this == "]" and set != start:
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break
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elif this and this[0] == "\\":
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code1 = _class_escape(source, this)
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elif this:
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code1 = LITERAL, this
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else:
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raise error, "unexpected end of regular expression"
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if source.match("-"):
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# potential range
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this = source.get()
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if this == "]":
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set.append(code1)
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set.append((LITERAL, "-"))
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break
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else:
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if this[0] == "\\":
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code2 = _class_escape(source, this)
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else:
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code2 = LITERAL, this
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if code1[0] != LITERAL or code2[0] != LITERAL:
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raise error, "illegal range"
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if len(code1[1]) != 1 or len(code2[1]) != 1:
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raise error, "illegal range"
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set.append((RANGE, (code1[1], code2[1])))
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else:
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if code1[0] is IN:
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code1 = code1[1][0]
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set.append(code1)
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# FIXME: <fl> move set optimization to compiler!
|
||||
if len(set)==1 and set[0][0] is LITERAL:
|
||||
subpattern.append(set[0]) # optimization
|
||||
elif len(set)==2 and set[0][0] is NEGATE and set[1][0] is LITERAL:
|
||||
subpattern.append((NOT_LITERAL, set[1][1])) # optimization
|
||||
else:
|
||||
# FIXME: <fl> add charmap optimization
|
||||
subpattern.append((IN, set))
|
||||
# FIXME: <fl> move set optimization to compiler!
|
||||
if len(set)==1 and set[0][0] is LITERAL:
|
||||
subpattern.append(set[0]) # optimization
|
||||
elif len(set)==2 and set[0][0] is NEGATE and set[1][0] is LITERAL:
|
||||
subpattern.append((NOT_LITERAL, set[1][1])) # optimization
|
||||
else:
|
||||
# FIXME: <fl> add charmap optimization
|
||||
subpattern.append((IN, set))
|
||||
|
||||
elif this and this[0] in REPEAT_CHARS:
|
||||
# repeat previous item
|
||||
if this == "?":
|
||||
min, max = 0, 1
|
||||
elif this == "*":
|
||||
min, max = 0, MAXREPEAT
|
||||
elif this == "+":
|
||||
min, max = 1, MAXREPEAT
|
||||
elif this == "{":
|
||||
min, max = 0, MAXREPEAT
|
||||
lo = hi = ""
|
||||
while source.next in DIGITS:
|
||||
lo = lo + source.get()
|
||||
if source.match(","):
|
||||
while source.next in DIGITS:
|
||||
hi = hi + source.get()
|
||||
else:
|
||||
hi = lo
|
||||
if not source.match("}"):
|
||||
raise error, "bogus range"
|
||||
if lo:
|
||||
min = int(lo)
|
||||
if hi:
|
||||
max = int(hi)
|
||||
# FIXME: <fl> check that hi >= lo!
|
||||
else:
|
||||
raise error, "not supported"
|
||||
# figure out which item to repeat
|
||||
if subpattern:
|
||||
item = subpattern[-1:]
|
||||
else:
|
||||
raise error, "nothing to repeat"
|
||||
if source.match("?"):
|
||||
subpattern[-1] = (MIN_REPEAT, (min, max, item))
|
||||
else:
|
||||
subpattern[-1] = (MAX_REPEAT, (min, max, item))
|
||||
elif this and this[0] in REPEAT_CHARS:
|
||||
# repeat previous item
|
||||
if this == "?":
|
||||
min, max = 0, 1
|
||||
elif this == "*":
|
||||
min, max = 0, MAXREPEAT
|
||||
elif this == "+":
|
||||
min, max = 1, MAXREPEAT
|
||||
elif this == "{":
|
||||
min, max = 0, MAXREPEAT
|
||||
lo = hi = ""
|
||||
while source.next in DIGITS:
|
||||
lo = lo + source.get()
|
||||
if source.match(","):
|
||||
while source.next in DIGITS:
|
||||
hi = hi + source.get()
|
||||
else:
|
||||
hi = lo
|
||||
if not source.match("}"):
|
||||
raise error, "bogus range"
|
||||
if lo:
|
||||
min = int(lo)
|
||||
if hi:
|
||||
max = int(hi)
|
||||
# FIXME: <fl> check that hi >= lo!
|
||||
else:
|
||||
raise error, "not supported"
|
||||
# figure out which item to repeat
|
||||
if subpattern:
|
||||
item = subpattern[-1:]
|
||||
else:
|
||||
raise error, "nothing to repeat"
|
||||
if source.match("?"):
|
||||
subpattern[-1] = (MIN_REPEAT, (min, max, item))
|
||||
else:
|
||||
subpattern[-1] = (MAX_REPEAT, (min, max, item))
|
||||
|
||||
elif this == ".":
|
||||
subpattern.append((ANY, None))
|
||||
elif this == ".":
|
||||
subpattern.append((ANY, None))
|
||||
|
||||
elif this == "(":
|
||||
group = 1
|
||||
name = None
|
||||
if source.match("?"):
|
||||
group = 0
|
||||
# options
|
||||
if source.match("P"):
|
||||
# python extensions
|
||||
if source.match("<"):
|
||||
# named group: skip forward to end of name
|
||||
name = ""
|
||||
while 1:
|
||||
char = source.get()
|
||||
if char is None:
|
||||
raise error, "unterminated name"
|
||||
if char == ">":
|
||||
break
|
||||
name = name + char
|
||||
group = 1
|
||||
if not isname(name):
|
||||
raise error, "illegal character in group name"
|
||||
elif source.match("="):
|
||||
# named backreference
|
||||
raise error, "not yet implemented"
|
||||
else:
|
||||
char = source.get()
|
||||
if char is None:
|
||||
raise error, "unexpected end of pattern"
|
||||
raise error, "unknown specifier: ?P%s" % char
|
||||
elif source.match(":"):
|
||||
# non-capturing group
|
||||
group = 2
|
||||
elif source.match("#"):
|
||||
# comment
|
||||
while 1:
|
||||
if source.next is None or source.next == ")":
|
||||
break
|
||||
source.get()
|
||||
else:
|
||||
# flags
|
||||
while FLAGS.has_key(source.next):
|
||||
state.flags = state.flags | FLAGS[source.get()]
|
||||
if group:
|
||||
# parse group contents
|
||||
b = []
|
||||
if group == 2:
|
||||
# anonymous group
|
||||
group = None
|
||||
else:
|
||||
group = state.getgroup(name)
|
||||
while 1:
|
||||
p = _parse(source, state, flags)
|
||||
if source.match(")"):
|
||||
if b:
|
||||
b.append(p)
|
||||
p = _branch(state, b)
|
||||
subpattern.append((SUBPATTERN, (group, p)))
|
||||
break
|
||||
elif source.match("|"):
|
||||
b.append(p)
|
||||
else:
|
||||
raise error, "group not properly closed"
|
||||
else:
|
||||
while 1:
|
||||
char = source.get()
|
||||
if char is None or char == ")":
|
||||
break
|
||||
raise error, "unknown extension"
|
||||
elif this == "(":
|
||||
group = 1
|
||||
name = None
|
||||
if source.match("?"):
|
||||
group = 0
|
||||
# options
|
||||
if source.match("P"):
|
||||
# python extensions
|
||||
if source.match("<"):
|
||||
# named group: skip forward to end of name
|
||||
name = ""
|
||||
while 1:
|
||||
char = source.get()
|
||||
if char is None:
|
||||
raise error, "unterminated name"
|
||||
if char == ">":
|
||||
break
|
||||
name = name + char
|
||||
group = 1
|
||||
if not isname(name):
|
||||
raise error, "illegal character in group name"
|
||||
elif source.match("="):
|
||||
# named backreference
|
||||
raise error, "not yet implemented"
|
||||
else:
|
||||
char = source.get()
|
||||
if char is None:
|
||||
raise error, "unexpected end of pattern"
|
||||
raise error, "unknown specifier: ?P%s" % char
|
||||
elif source.match(":"):
|
||||
# non-capturing group
|
||||
group = 2
|
||||
elif source.match("#"):
|
||||
# comment
|
||||
while 1:
|
||||
if source.next is None or source.next == ")":
|
||||
break
|
||||
source.get()
|
||||
else:
|
||||
# flags
|
||||
while FLAGS.has_key(source.next):
|
||||
state.flags = state.flags | FLAGS[source.get()]
|
||||
if group:
|
||||
# parse group contents
|
||||
b = []
|
||||
if group == 2:
|
||||
# anonymous group
|
||||
group = None
|
||||
else:
|
||||
group = state.getgroup(name)
|
||||
while 1:
|
||||
p = _parse(source, state, flags)
|
||||
if source.match(")"):
|
||||
if b:
|
||||
b.append(p)
|
||||
p = _branch(state, b)
|
||||
subpattern.append((SUBPATTERN, (group, p)))
|
||||
break
|
||||
elif source.match("|"):
|
||||
b.append(p)
|
||||
else:
|
||||
raise error, "group not properly closed"
|
||||
else:
|
||||
while 1:
|
||||
char = source.get()
|
||||
if char is None or char == ")":
|
||||
break
|
||||
raise error, "unknown extension"
|
||||
|
||||
elif this == "^":
|
||||
subpattern.append((AT, AT_BEGINNING))
|
||||
elif this == "^":
|
||||
subpattern.append((AT, AT_BEGINNING))
|
||||
|
||||
elif this == "$":
|
||||
subpattern.append((AT, AT_END))
|
||||
elif this == "$":
|
||||
subpattern.append((AT, AT_END))
|
||||
|
||||
elif this and this[0] == "\\":
|
||||
code = _escape(source, this, state)
|
||||
subpattern.append(code)
|
||||
elif this and this[0] == "\\":
|
||||
code = _escape(source, this, state)
|
||||
subpattern.append(code)
|
||||
|
||||
else:
|
||||
raise error, "parser error"
|
||||
else:
|
||||
raise error, "parser error"
|
||||
|
||||
return subpattern
|
||||
|
||||
|
|
@ -509,19 +509,19 @@ def parse(pattern, flags=0):
|
|||
state = State()
|
||||
b = []
|
||||
while 1:
|
||||
p = _parse(source, state, flags)
|
||||
tail = source.get()
|
||||
if tail == "|":
|
||||
b.append(p)
|
||||
elif tail == ")":
|
||||
raise error, "unbalanced parenthesis"
|
||||
elif tail is None:
|
||||
if b:
|
||||
b.append(p)
|
||||
p = _branch(state, b)
|
||||
break
|
||||
else:
|
||||
raise error, "bogus characters at end of regular expression"
|
||||
p = _parse(source, state, flags)
|
||||
tail = source.get()
|
||||
if tail == "|":
|
||||
b.append(p)
|
||||
elif tail == ")":
|
||||
raise error, "unbalanced parenthesis"
|
||||
elif tail is None:
|
||||
if b:
|
||||
b.append(p)
|
||||
p = _branch(state, b)
|
||||
break
|
||||
else:
|
||||
raise error, "bogus characters at end of regular expression"
|
||||
return p
|
||||
|
||||
def parse_template(source, pattern):
|
||||
|
|
@ -531,59 +531,59 @@ def parse_template(source, pattern):
|
|||
p = []
|
||||
a = p.append
|
||||
while 1:
|
||||
this = s.get()
|
||||
if this is None:
|
||||
break # end of replacement string
|
||||
if this and this[0] == "\\":
|
||||
# group
|
||||
if this == "\\g":
|
||||
name = ""
|
||||
if s.match("<"):
|
||||
while 1:
|
||||
char = s.get()
|
||||
if char is None:
|
||||
raise error, "unterminated group name"
|
||||
if char == ">":
|
||||
break
|
||||
name = name + char
|
||||
if not name:
|
||||
raise error, "bad group name"
|
||||
try:
|
||||
index = int(name)
|
||||
except ValueError:
|
||||
if not isname(name):
|
||||
raise error, "illegal character in group name"
|
||||
try:
|
||||
index = pattern.groupindex[name]
|
||||
except KeyError:
|
||||
raise IndexError, "unknown group name"
|
||||
a((MARK, index))
|
||||
elif len(this) > 1 and this[1] in DIGITS:
|
||||
code = None
|
||||
while 1:
|
||||
group = _group(this, pattern.groups+1)
|
||||
if group:
|
||||
if (not s.next or
|
||||
not _group(this + s.next, pattern.groups+1)):
|
||||
code = MARK, int(group)
|
||||
break
|
||||
elif s.next in OCTDIGITS:
|
||||
this = this + s.get()
|
||||
else:
|
||||
break
|
||||
if not code:
|
||||
this = this[1:]
|
||||
# FIXME: support unicode characters!
|
||||
code = LITERAL, chr(int(this[-6:], 8) & 0xff)
|
||||
a(code)
|
||||
else:
|
||||
try:
|
||||
a(ESCAPES[this])
|
||||
except KeyError:
|
||||
for c in this:
|
||||
a((LITERAL, c))
|
||||
else:
|
||||
a((LITERAL, this))
|
||||
this = s.get()
|
||||
if this is None:
|
||||
break # end of replacement string
|
||||
if this and this[0] == "\\":
|
||||
# group
|
||||
if this == "\\g":
|
||||
name = ""
|
||||
if s.match("<"):
|
||||
while 1:
|
||||
char = s.get()
|
||||
if char is None:
|
||||
raise error, "unterminated group name"
|
||||
if char == ">":
|
||||
break
|
||||
name = name + char
|
||||
if not name:
|
||||
raise error, "bad group name"
|
||||
try:
|
||||
index = int(name)
|
||||
except ValueError:
|
||||
if not isname(name):
|
||||
raise error, "illegal character in group name"
|
||||
try:
|
||||
index = pattern.groupindex[name]
|
||||
except KeyError:
|
||||
raise IndexError, "unknown group name"
|
||||
a((MARK, index))
|
||||
elif len(this) > 1 and this[1] in DIGITS:
|
||||
code = None
|
||||
while 1:
|
||||
group = _group(this, pattern.groups+1)
|
||||
if group:
|
||||
if (not s.next or
|
||||
not _group(this + s.next, pattern.groups+1)):
|
||||
code = MARK, int(group)
|
||||
break
|
||||
elif s.next in OCTDIGITS:
|
||||
this = this + s.get()
|
||||
else:
|
||||
break
|
||||
if not code:
|
||||
this = this[1:]
|
||||
# FIXME: support unicode characters!
|
||||
code = LITERAL, chr(int(this[-6:], 8) & 0xff)
|
||||
a(code)
|
||||
else:
|
||||
try:
|
||||
a(ESCAPES[this])
|
||||
except KeyError:
|
||||
for c in this:
|
||||
a((LITERAL, c))
|
||||
else:
|
||||
a((LITERAL, this))
|
||||
return p
|
||||
|
||||
def expand_template(template, match):
|
||||
|
|
@ -592,11 +592,11 @@ def expand_template(template, match):
|
|||
p = []
|
||||
a = p.append
|
||||
for c, s in template:
|
||||
if c is LITERAL:
|
||||
a(s)
|
||||
elif c is MARK:
|
||||
s = match.group(s)
|
||||
if s is None:
|
||||
raise error, "empty group"
|
||||
a(s)
|
||||
if c is LITERAL:
|
||||
a(s)
|
||||
elif c is MARK:
|
||||
s = match.group(s)
|
||||
if s is None:
|
||||
raise error, "empty group"
|
||||
a(s)
|
||||
return match.string[:0].join(p)
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue