Module Impl

An implementation that satisfies the RegexTreeView signature.

Import path

import semmle.python.regexp.RegexTreeView

Predicates

isDotAll	Holds if `root` has the `s` flag for multi-line matching.
isEscapeClass	Holds if `term` is an escape class representing e.g. `\d`. `clazz` is which character class it represents, e.g. “d” for `\d`.
isExcluded	Holds if the regular expression should not be considered.
isIgnoreCase	Holds if `root` has the `i` flag for case-insensitive matching.
isPossessive	Holds if `term` is a possessive quantifier. As python’s regexes do not support possessive quantifiers, this never holds, but is used by the shared library.
matchesAnyPrefix	Holds if the regex that `term` is part of is used in a way that ignores any leading prefix of the input it’s matched against. Not yet implemented for Python.
matchesAnySuffix	Holds if the regex that `term` is part of is used in a way that ignores any trailing suffix of the input it’s matched against. Not yet implemented for Python.

Classes

InfiniteRepetitionQuantifier	A regular expression term that permits unlimited repetitions.
RegExpAlt	An alternative term, that is, a term of the form `a\|b`.
RegExpAnchor	A term that matches a specific position between characters in the string.
RegExpBackRef	A back reference, that is, a term of the form `\i` or `\k<name>` in a regular expression.
RegExpCaret	A caret assertion `^` or `\A` matching the beginning of a line.
RegExpCharacterClass	A character class in a regular expression.
RegExpCharacterClassEscape	A character class escape in a regular expression. That is, an escaped character that denotes multiple characters.
RegExpCharacterRange	A character range in a character class in a regular expression.
RegExpConstant	A constant regular expression term, that is, a regular expression term matching a single string. Currently, this will always be a single character.
RegExpDollar	A dollar assertion `$` or `\Z` matching the end of a line.
RegExpDot	A dot regular expression.
RegExpEscape	An escaped regular expression term, that is, a regular expression term starting with a backslash, which is not a backreference.
RegExpGroup	A grouped regular expression.
RegExpLiteral	A string literal used as a regular expression
RegExpLookahead	A zero-width lookahead assertion.
RegExpLookbehind	A zero-width lookbehind assertion.
RegExpNegativeLookahead	A negative-lookahead assertion.
RegExpNegativeLookbehind	A negative-lookbehind assertion.
RegExpNonWordBoundary	A non-word boundary, that is, a regular expression term of the form `\B`.
RegExpNormalChar	A normal character in a regular expression, that is, a character without special meaning. This includes escaped characters.
RegExpOpt	An optional term.
RegExpParent	An element containing a regular expression term, that is, either a string literal (parsed as a regular expression) or another regular expression term.
RegExpPlus	A plus-quantified term.
RegExpPositiveLookahead	A positive-lookahead assertion.
RegExpPositiveLookbehind	A positive-lookbehind assertion.
RegExpQuantifier	A quantified regular expression term.
RegExpRange	A range-quantified term
RegExpSequence	A sequence term.
RegExpSpecialChar	A special character in a regular expression.
RegExpStar	A star-quantified term.
RegExpSubPattern	A zero-width lookahead or lookbehind assertion.
RegExpTerm	A regular expression term, that is, a syntactic part of a regular expression.
RegExpWordBoundary	A word boundary, that is, a regular expression term of the form `\b`.
RegExpZeroWidthMatch	A zero-width match, that is, either an empty group or an assertion.

Aliases

RegExpCharEscape	A character escape in a regular expression.
Top	An element containing a regular expression term, that is, either a string literal (parsed as a regular expression) or another regular expression term.