CharacterClass.literal constructor
CharacterClass.literal(
- String literal
Given a literal
character, matches the same character with attaching a
backslash to escape possibility of conflicts with existing literals used
by other matching operator.
Example:
// Matches a square opening bracket
var cmp = CharacterClass.literal("[",);
Implementation
factory CharacterClass.literal(String literal,) {
literal = literal.trim();
if (literal.isEmpty) {
throw ArgumentError.value(literal, "Literal", "Must not be empty",);
}
return CharacterClass._raw("\\${literal[0]}",);
}