TagChunk class

Represents a placeholder tag in a tree pattern. A tag can have any of the following forms.

  • [expr]: An unlabeled placeholder for a parser rule [expr].
  • [ID]: An unlabeled placeholder for a token of type [ID].
  • {@code e:expr}: A labeled placeholder for a parser rule [expr].
  • {@code id:ID}: A labeled placeholder for a token of type [ID].

This class does not perform any validation on the tag or label names aside from ensuring that the tag is a non-null, non-empty string.

Inheritance

Constructors

TagChunk(String tag, {String? label})
Construct a new instance of TagChunk using the specified label and tag.

Properties

hashCode → int
The hash code for this object.
no setterinherited
label → String?
The label assigned to this chunk, or null if no label is assigned to the chunk.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tag → String
The tag for the chunk.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
This method returns a text representation of the tag chunk. Labeled tags are returned in the form {@code label:tag}, and unlabeled tags are returned as just the tag name.
override

Operators

operator ==(Object other) → bool
The equality operator.
inherited