Python sre_parse.Pattern方法代码示例

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def _compile(pattern, flags):
    # internal: compile pattern
    if isinstance(flags, RegexFlag):
        flags = flags.value
    try:
        return _cache[type(pattern), pattern, flags]
    except KeyError:
        pass
    if isinstance(pattern, Pattern):
        if flags:
            raise ValueError(
                "cannot process flags argument with a compiled pattern")
        return pattern
    if not sre_compile.isstring(pattern):
        raise TypeError("first argument must be string or compiled pattern")
    p = sre_compile.compile(pattern, flags)
    if not (flags & DEBUG):
        if len(_cache) >= _MAXCACHE:
            # Drop the oldest item
            try:
                del _cache[next(iter(_cache))]
            except (StopIteration, RuntimeError, KeyError):
                pass
        _cache[type(pattern), pattern, flags] = p
    return p 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def __init__(self, lexicon, flags=0):
        from sre_constants import BRANCH, SUBPATTERN
        if isinstance(flags, RegexFlag):
            flags = flags.value
        self.lexicon = lexicon
        # combine phrases into a compound pattern
        p = []
        s = sre_parse.Pattern()
        s.flags = flags
        for phrase, action in lexicon:
            gid = s.opengroup()
            p.append(sre_parse.SubPattern(s, [
                (SUBPATTERN, (gid, 0, 0, sre_parse.parse(phrase, flags))),
                ]))
            s.closegroup(gid, p[-1])
        p = sre_parse.SubPattern(s, [(BRANCH, (None, p))])
        self.scanner = sre_compile.compile(p) 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def __init__(self, lexicon, flags=0):
        from sre_constants import BRANCH, SUBPATTERN
        self.lexicon = lexicon
        # combine phrases into a compound pattern
        p = []
        s = sre_parse.Pattern()
        s.flags = flags
        for phrase, action in lexicon:
            p.append(sre_parse.SubPattern(s, [
                (SUBPATTERN, (len(p)+1, sre_parse.parse(phrase, flags))),
                ]))
        s.groups = len(p)+1
        p = sre_parse.SubPattern(s, [(BRANCH, (None, p))])
        self.scanner = sre_compile.compile(p) 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def _compile(regexp):

    parsed = sre_parse.parse(regexp)
    parsed = _remove_group_identifiers(parsed)

    # Add grouping parentheses around the regexp; this will allow
    # us to access the material that was split on.
    # Need to set the Pattern to expect a single group

    pattern = sre_parse.Pattern()
    pattern.groups += 1
    grouped = sre_parse.SubPattern(pattern)
    grouped.append((sre_constants.SUBPATTERN, (1, parsed)))

    return sre_compile.compile(grouped, re.UNICODE | re.MULTILINE | re.DOTALL) 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def __init__(self, lexicon, flags=0):
        from sre_constants import BRANCH, SUBPATTERN
        self.lexicon = lexicon
        # combine phrases into a compound pattern
        p = []
        s = sre_parse.Pattern()
        s.flags = flags
        for phrase, action in lexicon:
            gid = s.opengroup()
            p.append(sre_parse.SubPattern(s, [
                (SUBPATTERN, (gid, sre_parse.parse(phrase, flags))),
                ]))
            s.closegroup(gid, p[-1])
        p = sre_parse.SubPattern(s, [(BRANCH, (None, p))])
        self.scanner = sre_compile.compile(p) 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def compile(pattern, flags=0):
    "Compile a regular expression pattern, returning a Pattern object."
    return _compile(pattern, flags) 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def template(pattern, flags=0):
    "Compile a template pattern, returning a Pattern object"
    return _compile(pattern, flags|T)

# SPECIAL_CHARS
# closing ')', '}' and ']'
# '-' (a range in character set)
# '&', '~', (extended character set operations)
# '#' (comment) and WHITESPACE (ignored) in verbose mode 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def _subx(pattern, template):
    # internal: Pattern.sub/subn implementation helper
    template = _compile_repl(template, pattern)
    if not template[0] and len(template[1]) == 1:
        # literal replacement
        return template[1][0]
    def filter(match, template=template):
        return sre_parse.expand_template(template, match)
    return filter

# register myself for pickling 

# 需要导入模块: import sre_parse [as 别名]
# 或者: from sre_parse import Pattern [as 别名]
def __init__(self, lexicon, flags=0):
            from sre_constants import BRANCH, SUBPATTERN
            self.lexicon = lexicon
            # combine phrases into a compound pattern
            p = []
            s = sre_parse.Pattern()
            s.flags = flags
            for phrase, action in lexicon:
                p.append(sre_parse.SubPattern(s, [
                    (SUBPATTERN, (len(p)+1, sre_parse.parse(phrase, flags))),
                    ]))
            s.groups = len(p)+1
            p = sre_parse.SubPattern(s, [(BRANCH, (None, p))])
            self.scanner = sre_compile.compile(p)