I'm just getting started with ANTLR v3 and StringTemplate. I have a very simple DSL that allows me to indicate I/O direction using ' <-', '->', and ' <->'. I've defined these in a token block as:

			

			IN = '->';
			

			OUT = '
			<-';
			

			INOUT = '
			<->';
			

		

This works great when generating ASTs; however, when I try to use StringTemplate with any of my DSL's source containing ' <-', then I get the following exception.

			

			problem parsing template 'anonymous'
			

			line 1:1: unexpected char: '
			<'
			

			at org.antlr.stringtemplate.language.AngleBracketTemplateLexer.nextToken(AngleBracketTemplateLexer.java:149)
			

			at antlr.TokenBuffer.fill(TokenBuffer.java:69)
			

			at antlr.TokenBuffer.LA(TokenBuffer.java:80)
			

			at antlr.LLkParser.LA(LLkParser.java:52)
			

			at org.antlr.stringtemplate.language.TemplateParser.template(TemplateParser.java:103)
			

			at org.antlr.stringtemplate.StringTemplate.breakTemplateIntoChunks(StringTemplate.java:850)
			

			at org.antlr.stringtemplate.StringTemplate.setTemplate(StringTemplate.java:441)
			

			at org.antlr.stringtemplate.StringTemplate.
			(StringTemplate.java:308)
			

			at com.kevlindev.simpleType.SimpleTypeJava.io(SimpleTypeJava.java:444)
			

			at com.kevlindev.simpleType.SimpleTypeJava.property(SimpleTypeJava.java:374)
			

			at com.kevlindev.simpleType.SimpleTypeJava.type(SimpleTypeJava.java:224)
			

			at com.kevlindev.simpleType.SimpleTypeJava.prog(SimpleTypeJava.java:114)
			

			at com.kevlindev.simpleType.SimpleTypeTest.parse(SimpleTypeTest.java:74)
			

			at com.kevlindev.simpleType.SimpleTypeTest.main(SimpleTypeTest.java:31)
			

		

Based on the error, it looks like I need to somehow escape the angle brackets in my tokens. I tried escaping them in the tree-building parser, but that had no effect. If I change the tokens to use text without brackets, all is good. Any suggestions on how I can get around this issue?

Thanks,

Kevin