hi. Gerald (and I) liked the inContext method in treeparser:
tokenAlias
: {inContext("TOKENS")}? ^(ASSIGN TOKEN_REF STRING_LITERAL)
{BasicSemanticChecks.checkTokenAlias($TOKEN_REF.token);}
;
I got rid of it awhile back since it wasn't quite powerful enough so I thought
I'd start again later. now is later and I need it. ANybody have a wish list or
thoughts on it?
the javadoc:
/** Check if current node in input has a context. Context means sequence
* of nodes towards root of tree. For example, you might say context
* is "MULT" which means my parent must be MULT. "CLASS VARDEF" says
* current node must be child of a VARDEF and whose parent is a CLASS node.
* You can use "..." to mean zero-or-more nodes. "METHOD ... VARDEF"
* means my parent is VARDEF and somewhere above that is a METHOD node.
* The first node in the context is not necessarily the root. The context
* matcher stops matching and returns true when it runs out of context.
* There is no way to force the first node to be the root.
*/
ter
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