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syntax RegexExpression
{
| Choice = LeftRule=RegexExpression ^ 10 RightRules=("|" RegexExpression ^ 10)+
| Sequence = LeftRule=RegexExpression ^ 20 RightRules=(RegexExpression ^ 20)+
| Optional = RegexExpression "?" precedence 30
| ZeroOrMany = RegexExpression "*" precedence 30
| OneOrMany = RegexExpression "+" precedence 30
| Invert = "~" RegexExpression precedence 25
| Subtract = Rule1=RegexExpression "-" Rule2=RegexExpression precedence 22
| Char = CharLiteral
| String = StringLiteral
| Call = QualifiedName
| Rounds = "(" RegexExpression ")"
| Range = "[" (Range; ",")+ "]"
| InvertedRange = "[" "^" (Range; ",")+ "]"
| ZeroOrManyWithSeparator = "(" RegexExpression ";" Separator ")" "*"
| OneOrManyWithSeparator = "(" RegexExpression ";" Separator ")" "+"
}
|
RegexExpression describes the RegexRule body, and is also used in some places where a regular expression should be specified.
The result of the RegexExpression parsing is the NSpan type that describes a text span. AST nodes are not created for RegexExpression.
See also
RegexRule
Choice
Sequence
Optional
ZeroOrMany
OneOrMany
Invert
Subtract
Char
String
Call
Rounds
Range
InvertedRange
ZeroOrManyWithSeparator
OneOrManyWithSeparator
NSpan