[antlr-interest] Switching between literals and keywords

[Donovan, Bob]

I have a language that I am preparing a grammer for. The language sometimes has dual uses for some of the tokens.

For instance, I sometimes have to match keywords like "integer" in the following phrase:
"define integer constant HostNameLength = 20;"

In this case, I match this phrase with the following:

protected
defineIntegerConstant
	:	"define" "integer" "constant" ID EQUAL  INT ((SEMI)=>SEMI)?
	;


But then I sometimes I have other phrases where I don't won't the "integer" keyword returned as the LITERAL_integer, but instead returned as a IDENTIFIER. For example in the following phrase, the word integer could be any type: integer, ObjectPtr, float, boolean, string, etc. In the example below, I need to match "update" COLON ID ID

"define object message EvaluateForFrozen (
	update: integer mfail);"

How do I get the lexer to return a INDENTIER instead of a LITERAL_integer?

Thanks, Bob



 
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