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Fix parsing of POSIX bracket expressions.
The docs are misleading. [[:alpha:]] is actually a character class *containing* a POSIX bracket expression, and that means you can have expressions like [[:alpha:][:digit:]_?!]
This commit is contained in:
Nick Rolfe
@@ -223,252 +223,334 @@ regexp.rb:
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# 26| [RegExpConstant, RegExpNormalChar] -
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# 29| [RegExpStar] .*
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# 29| [RegExpCharacterClass] [[a-f]
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] [
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#-----| 1 -> [RegExpCharacterRange] a-f
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# 29| [RegExpSequence] [[a-f]A-F]
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#-----| 0 -> [RegExpCharacterClass] [[a-f]
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] A
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#-----| 2 -> [RegExpConstant, RegExpNormalChar] -
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#-----| 3 -> [RegExpConstant, RegExpNormalChar] F
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#-----| 4 -> [RegExpConstant, RegExpNormalChar] ]
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# 29| [RegExpConstant, RegExpNormalChar] [
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# 29| [RegExpCharacterRange] a-f
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] a
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] f
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# 29| [RegExpConstant, RegExpNormalChar] a
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# 29| [RegExpConstant, RegExpNormalChar] f
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# 29| [RegExpConstant, RegExpNormalChar] A
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# 29| [RegExpConstant, RegExpNormalChar] -
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# 29| [RegExpConstant, RegExpNormalChar] F
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# 29| [RegExpConstant, RegExpNormalChar] ]
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# 32| [RegExpStar] .*
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#-----| 0 -> [RegExpDot] .
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# 29| [RegExpDot] .
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# 32| [RegExpDot] .
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# 30| [RegExpStar] .*
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# 33| [RegExpStar] .*
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#-----| 0 -> [RegExpDot] .
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# 30| [RegExpDot] .
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# 33| [RegExpDot] .
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# 31| [RegExpPlus] \w+
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# 34| [RegExpPlus] \w+
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#-----| 0 -> [RegExpCharacterClassEscape] \w
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# 31| [RegExpCharacterClassEscape] \w
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# 34| [RegExpCharacterClassEscape] \w
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# 31| [RegExpSequence] \w+\W
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# 34| [RegExpSequence] \w+\W
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#-----| 0 -> [RegExpPlus] \w+
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#-----| 1 -> [RegExpCharacterClassEscape] \W
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# 31| [RegExpCharacterClassEscape] \W
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# 34| [RegExpCharacterClassEscape] \W
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# 32| [RegExpCharacterClassEscape] \s
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# 35| [RegExpCharacterClassEscape] \s
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# 32| [RegExpSequence] \s\S
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# 35| [RegExpSequence] \s\S
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#-----| 0 -> [RegExpCharacterClassEscape] \s
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#-----| 1 -> [RegExpCharacterClassEscape] \S
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# 32| [RegExpCharacterClassEscape] \S
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# 35| [RegExpCharacterClassEscape] \S
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# 33| [RegExpCharacterClassEscape] \d
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# 36| [RegExpCharacterClassEscape] \d
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# 33| [RegExpSequence] \d\D
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# 36| [RegExpSequence] \d\D
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#-----| 0 -> [RegExpCharacterClassEscape] \d
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#-----| 1 -> [RegExpCharacterClassEscape] \D
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# 33| [RegExpCharacterClassEscape] \D
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# 36| [RegExpCharacterClassEscape] \D
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# 34| [RegExpCharacterClassEscape] \h
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# 37| [RegExpCharacterClassEscape] \h
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# 34| [RegExpSequence] \h\H
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# 37| [RegExpSequence] \h\H
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#-----| 0 -> [RegExpCharacterClassEscape] \h
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#-----| 1 -> [RegExpCharacterClassEscape] \H
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# 34| [RegExpCharacterClassEscape] \H
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# 37| [RegExpCharacterClassEscape] \H
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# 35| [RegExpConstant, RegExpEscape] \n
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# 38| [RegExpConstant, RegExpEscape] \n
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# 35| [RegExpSequence] \n\r\t
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# 38| [RegExpSequence] \n\r\t
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#-----| 0 -> [RegExpConstant, RegExpEscape] \n
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#-----| 1 -> [RegExpConstant, RegExpEscape] \r
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#-----| 2 -> [RegExpConstant, RegExpEscape] \t
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# 35| [RegExpConstant, RegExpEscape] \r
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# 38| [RegExpConstant, RegExpEscape] \r
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# 35| [RegExpConstant, RegExpEscape] \t
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# 38| [RegExpConstant, RegExpEscape] \t
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# 38| [RegExpStar] (foo)*
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# 41| [RegExpStar] (foo)*
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#-----| 0 -> [RegExpGroup] (foo)
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# 38| [RegExpGroup] (foo)
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# 41| [RegExpGroup] (foo)
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#-----| 0 -> [RegExpSequence] foo
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# 38| [RegExpSequence] (foo)*bar
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# 41| [RegExpSequence] (foo)*bar
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#-----| 0 -> [RegExpStar] (foo)*
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] b
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#-----| 2 -> [RegExpConstant, RegExpNormalChar] a
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#-----| 3 -> [RegExpConstant, RegExpNormalChar] r
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# 38| [RegExpConstant, RegExpNormalChar] f
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# 41| [RegExpConstant, RegExpNormalChar] f
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# 38| [RegExpSequence] foo
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# 41| [RegExpSequence] foo
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] f
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] o
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#-----| 2 -> [RegExpConstant, RegExpNormalChar] o
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# 38| [RegExpConstant, RegExpNormalChar] o
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# 41| [RegExpConstant, RegExpNormalChar] o
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# 38| [RegExpConstant, RegExpNormalChar] o
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# 41| [RegExpConstant, RegExpNormalChar] o
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# 38| [RegExpConstant, RegExpNormalChar] b
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# 41| [RegExpConstant, RegExpNormalChar] b
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# 38| [RegExpConstant, RegExpNormalChar] a
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# 41| [RegExpConstant, RegExpNormalChar] a
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# 38| [RegExpConstant, RegExpNormalChar] r
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# 41| [RegExpConstant, RegExpNormalChar] r
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# 39| [RegExpConstant, RegExpNormalChar] f
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# 42| [RegExpConstant, RegExpNormalChar] f
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# 39| [RegExpSequence] fo(o|b)ar
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# 42| [RegExpSequence] fo(o|b)ar
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] f
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] o
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#-----| 2 -> [RegExpGroup] (o|b)
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#-----| 3 -> [RegExpConstant, RegExpNormalChar] a
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#-----| 4 -> [RegExpConstant, RegExpNormalChar] r
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# 39| [RegExpConstant, RegExpNormalChar] o
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# 42| [RegExpConstant, RegExpNormalChar] o
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# 39| [RegExpGroup] (o|b)
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# 42| [RegExpGroup] (o|b)
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#-----| 0 -> [RegExpAlt] o|b
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# 39| [RegExpAlt] o|b
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# 42| [RegExpAlt] o|b
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] o
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] b
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# 39| [RegExpConstant, RegExpNormalChar] o
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# 42| [RegExpConstant, RegExpNormalChar] o
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# 39| [RegExpConstant, RegExpNormalChar] b
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# 42| [RegExpConstant, RegExpNormalChar] b
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# 39| [RegExpConstant, RegExpNormalChar] a
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# 42| [RegExpConstant, RegExpNormalChar] a
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# 39| [RegExpConstant, RegExpNormalChar] r
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# 42| [RegExpConstant, RegExpNormalChar] r
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# 40| [RegExpGroup] (a|b|cd)
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# 43| [RegExpGroup] (a|b|cd)
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#-----| 0 -> [RegExpAlt] a|b|cd
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# 40| [RegExpSequence] (a|b|cd)e
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# 43| [RegExpSequence] (a|b|cd)e
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#-----| 0 -> [RegExpGroup] (a|b|cd)
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] e
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# 40| [RegExpAlt] a|b|cd
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# 43| [RegExpAlt] a|b|cd
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] a
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] b
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#-----| 2 -> [RegExpSequence] cd
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# 40| [RegExpConstant, RegExpNormalChar] a
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# 43| [RegExpConstant, RegExpNormalChar] a
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# 40| [RegExpConstant, RegExpNormalChar] b
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# 43| [RegExpConstant, RegExpNormalChar] b
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# 40| [RegExpConstant, RegExpNormalChar] c
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# 43| [RegExpConstant, RegExpNormalChar] c
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# 40| [RegExpSequence] cd
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# 43| [RegExpSequence] cd
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] c
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] d
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# 40| [RegExpConstant, RegExpNormalChar] d
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# 43| [RegExpConstant, RegExpNormalChar] d
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# 40| [RegExpConstant, RegExpNormalChar] e
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# 43| [RegExpConstant, RegExpNormalChar] e
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# 41| [RegExpGroup] (?::+)
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# 44| [RegExpGroup] (?::+)
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#-----| 0 -> [RegExpPlus] :+
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# 41| [RegExpSequence] (?::+)\w
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# 44| [RegExpSequence] (?::+)\w
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#-----| 0 -> [RegExpGroup] (?::+)
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#-----| 1 -> [RegExpCharacterClassEscape] \w
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# 41| [RegExpPlus] :+
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# 44| [RegExpPlus] :+
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] :
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# 41| [RegExpConstant, RegExpNormalChar] :
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# 41| [RegExpCharacterClassEscape] \w
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# 44| [RegExpGroup] (?<id>\w+)
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#-----| 0 -> [RegExpPlus] \w+
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# 44| [RegExpPlus] \w+
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#-----| 0 -> [RegExpCharacterClassEscape] \w
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# 44| [RegExpConstant, RegExpNormalChar] :
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# 44| [RegExpCharacterClassEscape] \w
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# 45| [RegExpGroup] (?'foo'fo+)
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# 47| [RegExpGroup] (?<id>\w+)
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#-----| 0 -> [RegExpPlus] \w+
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# 47| [RegExpPlus] \w+
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#-----| 0 -> [RegExpCharacterClassEscape] \w
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# 47| [RegExpCharacterClassEscape] \w
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# 48| [RegExpGroup] (?'foo'fo+)
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#-----| 0 -> [RegExpSequence] fo+
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# 45| [RegExpConstant, RegExpNormalChar] f
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# 48| [RegExpConstant, RegExpNormalChar] f
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# 45| [RegExpSequence] fo+
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# 48| [RegExpSequence] fo+
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] f
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#-----| 1 -> [RegExpPlus] o+
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# 45| [RegExpPlus] o+
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# 48| [RegExpPlus] o+
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] o
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# 45| [RegExpConstant, RegExpNormalChar] o
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# 48| [RegExpConstant, RegExpNormalChar] o
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# 48| [RegExpGroup] (a+)
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# 51| [RegExpGroup] (a+)
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#-----| 0 -> [RegExpPlus] a+
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# 48| [RegExpSequence] (a+)b+\1
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# 51| [RegExpSequence] (a+)b+\1
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#-----| 0 -> [RegExpGroup] (a+)
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#-----| 1 -> [RegExpPlus] b+
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#-----| 2 -> [RegExpBackRef] \1
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# 48| [RegExpPlus] a+
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# 51| [RegExpPlus] a+
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] a
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# 48| [RegExpConstant, RegExpNormalChar] a
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# 51| [RegExpConstant, RegExpNormalChar] a
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# 48| [RegExpPlus] b+
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# 51| [RegExpPlus] b+
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] b
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# 48| [RegExpConstant, RegExpNormalChar] b
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# 51| [RegExpConstant, RegExpNormalChar] b
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# 48| [RegExpBackRef] \1
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# 51| [RegExpBackRef] \1
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# 49| [RegExpGroup] (?<qux>q+)
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# 52| [RegExpGroup] (?<qux>q+)
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#-----| 0 -> [RegExpPlus] q+
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# 49| [RegExpSequence] (?<qux>q+)\s+\k<qux>+
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# 52| [RegExpSequence] (?<qux>q+)\s+\k<qux>+
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#-----| 0 -> [RegExpGroup] (?<qux>q+)
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#-----| 1 -> [RegExpPlus] \s+
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#-----| 2 -> [RegExpPlus] \k<qux>+
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# 49| [RegExpPlus] q+
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# 52| [RegExpPlus] q+
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] q
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# 49| [RegExpConstant, RegExpNormalChar] q
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# 52| [RegExpConstant, RegExpNormalChar] q
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# 49| [RegExpPlus] \s+
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# 52| [RegExpPlus] \s+
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#-----| 0 -> [RegExpCharacterClassEscape] \s
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# 49| [RegExpCharacterClassEscape] \s
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# 52| [RegExpCharacterClassEscape] \s
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# 49| [RegExpBackRef] \k<qux>
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# 52| [RegExpBackRef] \k<qux>
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# 49| [RegExpPlus] \k<qux>+
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# 52| [RegExpPlus] \k<qux>+
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#-----| 0 -> [RegExpBackRef] \k<qux>
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# 52| [RegExpNamedCharacterProperty] \p{Word}
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# 55| [RegExpNamedCharacterProperty] \p{Word}
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# 52| [RegExpStar] \p{Word}*
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# 55| [RegExpStar] \p{Word}*
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#-----| 0 -> [RegExpNamedCharacterProperty] \p{Word}
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# 53| [RegExpNamedCharacterProperty] \P{Digit}
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# 56| [RegExpNamedCharacterProperty] \P{Digit}
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# 53| [RegExpPlus] \P{Digit}+
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# 56| [RegExpPlus] \P{Digit}+
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#-----| 0 -> [RegExpNamedCharacterProperty] \P{Digit}
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# 54| [RegExpNamedCharacterProperty] \p{^Alnum}
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# 57| [RegExpNamedCharacterProperty] \p{^Alnum}
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# 54| [RegExpRange] \p{^Alnum}{2,3}
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# 57| [RegExpRange] \p{^Alnum}{2,3}
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#-----| 0 -> [RegExpNamedCharacterProperty] \p{^Alnum}
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# 54| [RegExpNormalChar] 2
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# 57| [RegExpNormalChar] 2
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# 54| [RegExpNormalChar] ,
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# 57| [RegExpNormalChar] ,
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# 54| [RegExpNormalChar] 3
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# 57| [RegExpNormalChar] 3
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# 54| [RegExpNormalChar] }
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# 57| [RegExpNormalChar] }
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# 55| [RegExpNamedCharacterProperty] [[:alpha:]]
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# 58| [RegExpCharacterClass] [a-f\p{Digit}]
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#-----| 0 -> [RegExpCharacterRange] a-f
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#-----| 1 -> [RegExpNamedCharacterProperty] \p{Digit}
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# 55| [RegExpSequence] [[:alpha:]][[:digit:]]+
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#-----| 0 -> [RegExpNamedCharacterProperty] [[:alpha:]]
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#-----| 1 -> [RegExpPlus] [[:digit:]]+
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# 58| [RegExpPlus] [a-f\p{Digit}]+
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#-----| 0 -> [RegExpCharacterClass] [a-f\p{Digit}]
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# 55| [RegExpNamedCharacterProperty] [[:digit:]]
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# 58| [RegExpCharacterRange] a-f
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] a
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] f
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# 55| [RegExpPlus] [[:digit:]]+
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#-----| 0 -> [RegExpNamedCharacterProperty] [[:digit:]]
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# 58| [RegExpConstant, RegExpNormalChar] a
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# 58| [RegExpConstant, RegExpNormalChar] f
|
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# 58| [RegExpNamedCharacterProperty] \p{Digit}
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# 61| [RegExpCharacterClass] [[:alpha:]]
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#-----| 0 -> [RegExpNamedCharacterProperty] [:alpha:]
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# 61| [RegExpSequence] [[:alpha:]][[:digit:]]
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#-----| 0 -> [RegExpCharacterClass] [[:alpha:]]
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#-----| 1 -> [RegExpCharacterClass] [[:digit:]]
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# 61| [RegExpNamedCharacterProperty] [:alpha:]
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# 61| [RegExpCharacterClass] [[:digit:]]
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#-----| 0 -> [RegExpNamedCharacterProperty] [:digit:]
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# 61| [RegExpNamedCharacterProperty] [:digit:]
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# 64| [RegExpCharacterClass] [[:alpha:][:digit:]]
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#-----| 0 -> [RegExpNamedCharacterProperty] [:alpha:]
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#-----| 1 -> [RegExpNamedCharacterProperty] [:digit:]
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# 64| [RegExpNamedCharacterProperty] [:alpha:]
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||||
|
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# 64| [RegExpNamedCharacterProperty] [:digit:]
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# 67| [RegExpCharacterClass] [A-F[:digit:]a-f]
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#-----| 0 -> [RegExpCharacterRange] A-F
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#-----| 1 -> [RegExpNamedCharacterProperty] [:digit:]
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#-----| 2 -> [RegExpCharacterRange] a-f
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# 67| [RegExpCharacterRange] A-F
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] A
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#-----| 1 -> [RegExpConstant, RegExpNormalChar] F
|
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# 67| [RegExpConstant, RegExpNormalChar] A
|
||||
|
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# 67| [RegExpConstant, RegExpNormalChar] F
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# 67| [RegExpNamedCharacterProperty] [:digit:]
|
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# 67| [RegExpCharacterRange] a-f
|
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#-----| 0 -> [RegExpConstant, RegExpNormalChar] a
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||||
#-----| 1 -> [RegExpConstant, RegExpNormalChar] f
|
||||
|
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# 67| [RegExpConstant, RegExpNormalChar] a
|
||||
|
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# 67| [RegExpConstant, RegExpNormalChar] f
|
||||
|
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# 70| [RegExpNamedCharacterProperty] [:digit:]
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||||
|
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@@ -25,6 +25,9 @@
|
||||
/[^]]/ # MRI gives a warning, but accepts this as matching anything except ']'
|
||||
/[^-]/
|
||||
|
||||
# Nested character classes
|
||||
/[[a-f]A-F]/ # BAD - not parsed correctly
|
||||
|
||||
# Meta-character classes
|
||||
/.*/
|
||||
/.*/m
|
||||
@@ -48,8 +51,20 @@
|
||||
/(a+)b+\1/
|
||||
/(?<qux>q+)\s+\k<qux>+/
|
||||
|
||||
# Named character properties
|
||||
# Named character properties using the p-style syntax
|
||||
/\p{Word}*/
|
||||
/\P{Digit}+/
|
||||
/\p{^Alnum}{2,3}/
|
||||
/[[:alpha:]][[:digit:]]+/
|
||||
/[a-f\p{Digit}]+/ # Also valid inside character classes
|
||||
|
||||
# Two separate character classes, each containing a single POSIX bracket expression
|
||||
/[[:alpha:]][[:digit:]]/
|
||||
|
||||
# A single character class containing two POSIX bracket expressions
|
||||
/[[:alpha:][:digit:]]/
|
||||
|
||||
# A single character class containing two ranges and one POSIX bracket expression
|
||||
/[A-F[:digit:]a-f]/
|
||||
|
||||
# *Not* a POSIX bracket expression; just a regular character class.
|
||||
/[:digit:]/
|
||||
|
||||
Reference in New Issue
Block a user