const class sys::Regex

sys::Obj
  sys::Regex

@Serializable { simple=true }

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Regex represents a regular expression.

defVal

const static Regex defVal

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Default value is Regex("").

equals

virtual override Bool equals(Obj? obj)

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Equality is based on pattern string and flags.

flags

Str flags()

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Return flags string

fromStr

static new fromStr(Str pattern, Str flags := "")

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Compile a regular expression pattern string. Flags is a string of ASCII chars. In JavaScript the flags are passed directly to RegExp. In Java the flags are matched against known constants or ignored. The following cross-platform flags are supported:

• i: case insensitive
• m: multi-line support for start/end matching
• s: dot all to allow "." to match newlines

glob

static Regex glob(Str pattern)

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Make a Regex which will match a glob pattern:

• "?": match one unknown char (maps to "." in regex)
• "*": match zero or more unknown char (maps to ".*" in regex)
• any other character is matched exactly

hash

virtual override Int hash()

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Return toStr.hash.

matcher

RegexMatcher matcher(Str s)

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Return a RegexMatcher instance to use for matching operations against the specified string.

matches

Bool matches(Str s)

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Convenience for matcher(s).matches.

quote

static Regex quote(Str str)

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Make a Regex that matches the given string exactly. All non-alpha numeric characters are escaped.

split

Str[] split(Str s, Int limit := 0)

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Split the specified string around matches of this pattern. The limit parameter specifies how many times to apply the pattern:

• If limit is greater than zero, the pattern is applied at most limit-1 times and any remaining input will be returned as the list's last item.
• If limit is less than zero, then the pattern is matched as many times as possible.
• If limit is zero, then the pattern is matched as many times as possible, but trailing empty strings are discarded.

toStr

virtual override Str toStr()

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Return the regular expression pattern string.