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Python: treat \A, \Z, \b, \B as special chars, not escapes

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This commit is contained in:
Nick Rolfe
2021-11-19 15:49:53 +00:00
parent f63c768d9f
commit df6ba43cca
8 changed files with 67 additions and 16 deletions
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12
python/ql/lib/semmle/python/RegexTreeView.qll
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@@ -539,8 +539,8 @@ private int toHex(string hex) {
/**
* A word boundary, that is, a regular expression term of the form `\b`.
*/
class RegExpWordBoundary extends RegExpEscape {
RegExpWordBoundary() { this.getUnescaped() = "b" }
class RegExpWordBoundary extends RegExpSpecialChar {
RegExpWordBoundary() { this.getChar() = "\\b" }
}
/**
@@ -809,7 +809,7 @@ class RegExpDot extends RegExpSpecialChar {
}
/**
* A dollar assertion `$` matching the end of a line.
* A dollar assertion `$` or `\Z` matching the end of a line.
*
* Example:
*
@@ -818,13 +818,13 @@ class RegExpDot extends RegExpSpecialChar {
* ```
*/
class RegExpDollar extends RegExpSpecialChar {
RegExpDollar() { this.getChar() = "$" }
RegExpDollar() { this.getChar() = ["$", "\\Z"] }
override string getPrimaryQLClass() { result = "RegExpDollar" }
}
/**
* A caret assertion `^` matching the beginning of a line.
* A caret assertion `^` or `\A` matching the beginning of a line.
*
* Example:
*
@@ -833,7 +833,7 @@ class RegExpDollar extends RegExpSpecialChar {
* ```
*/
class RegExpCaret extends RegExpSpecialChar {
RegExpCaret() { this.getChar() = "^" }
RegExpCaret() { this.getChar() = ["^", "\\A"] }
override string getPrimaryQLClass() { result = "RegExpCaret" }
}