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bpo-34681: Rename class Pattern in sre_parse to State. (GH-9310)

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Also rename corresponding attributes, parameters and variables.
This commit is contained in:
Serhiy Storchaka 2018-09-18 09:16:26 +03:00 • committed by GitHub
parent 9c53fa6ad9
commit e0c19ddc66
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3 changed files with 26 additions and 26 deletions
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40
Lib/sre_parse.py
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@ -71,8 +71,8 @@ GLOBAL_FLAGS = SRE_FLAG_DEBUG | SRE_FLAG_TEMPLATE
class Verbose(Exception):
pass
class Pattern:
# main pattern object. keeps track of global attributes
class State:
# keeps track of state for parsing
def __init__(self):
self.flags = 0
self.groupdict = {}
@ -108,8 +108,8 @@ class Pattern:
class SubPattern:
# a subpattern, in intermediate form
def __init__(self, pattern, data=None):
self.pattern = pattern
def __init__(self, state, data=None):
self.state = state
if data is None:
data = []
self.data = data
@ -163,7 +163,7 @@ class SubPattern:
del self.data[index]
def __getitem__(self, index):
if isinstance(index, slice):
return SubPattern(self.pattern, self.data[index])
return SubPattern(self.state, self.data[index])
return self.data[index]
def __setitem__(self, index, code):
self.data[index] = code
@ -202,7 +202,7 @@ class SubPattern:
lo = lo + 1
hi = hi + 1
elif op is GROUPREF:
i, j = self.pattern.groupwidths[av]
i, j = self.state.groupwidths[av]
lo = lo + i
hi = hi + j
elif op is GROUPREF_EXISTS:
@ -940,28 +940,28 @@ def fix_flags(src, flags):
raise ValueError("ASCII and LOCALE flags are incompatible")
return flags
def parse(str, flags=0, pattern=None):
def parse(str, flags=0, state=None):
# parse 're' pattern into list of (opcode, argument) tuples
source = Tokenizer(str)
if pattern is None:
pattern = Pattern()
pattern.flags = flags
pattern.str = str
if state is None:
state = State()
state.flags = flags
state.str = str
try:
p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, 0)
p = _parse_sub(source, state, flags & SRE_FLAG_VERBOSE, 0)
except Verbose:
# the VERBOSE flag was switched on inside the pattern. to be
# on the safe side, we'll parse the whole thing again...
pattern = Pattern()
pattern.flags = flags | SRE_FLAG_VERBOSE
pattern.str = str
state = State()
state.flags = flags | SRE_FLAG_VERBOSE
state.str = str
source.seek(0)
p = _parse_sub(source, pattern, True, 0)
p = _parse_sub(source, state, True, 0)
p.pattern.flags = fix_flags(str, p.pattern.flags)
p.state.flags = fix_flags(str, p.state.flags)
if source.next is not None:
assert source.next == ")"
@ -972,7 +972,7 @@ def parse(str, flags=0, pattern=None):
return p
def parse_template(source, pattern):
def parse_template(source, state):
# parse 're' replacement string into list of literals and
# group references
s = Tokenizer(source)
@ -982,14 +982,14 @@ def parse_template(source, pattern):
literal = []
lappend = literal.append
def addgroup(index, pos):
if index > pattern.groups:
if index > state.groups:
raise s.error("invalid group reference %d" % index, pos)
if literal:
literals.append(''.join(literal))
del literal[:]
groups.append((len(literals), index))
literals.append(None)
groupindex = pattern.groupindex
groupindex = state.groupindex
while True:
this = sget()
if this is None: