public interface SyntaxTree extends Tree
Intervalindicating the index in the
TokenStreamof the first and last token associated with this subtree. If this node is a leaf, then the interval represents a single token and has interval i..i for token index i.
An interval of i..i-1 indicates an empty interval at position i in the input stream, where 0 <= i <= the size of the input token stream. Currently, the code base can only have i=0..n-1 but in concept one could have an empty interval after EOF.
If source interval is unknown, this returns
As a weird special case, the source interval for rules matched after EOF is unspecified.
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