Hi all,
the purpose of the following grammar is to simplify trees. The idea is to
remove CONJUNCTION and DISJUNCTION nodes that have only one child
tree grammar ManchesterOWLSyntaxSimplify;
options {
language = Java;
tokenVocab = ManchesterOWLSyntax;
ASTLabelType = ManchesterOWLSyntaxTree;
filter=true;
output= AST;
}
@header {
package org.coode.parsers;
}
bottomup :
conjunction
| disjunction
;
conjunction :
^(CONJUNCTION single= .) -> ^($single)
;
disjunction :
^(DISJUNCTION single= .) -> ^($single)
;
However when I try to generate the code with ANTRLWorks 1.4.2 I get the
exception pasted below.
What am I doing wrong?
Thanks in advance,
Luigi
[17:07:50] error(10): internal error:
/Users/luigi/Documents/workspace/Parsers/src/ManchesterOWLSyntaxSimplify.g :
java.lang.IllegalArgumentException: Can't find template
rewriteWildcardLabelRefRoot.st; group hierarchy is [Java]
org.antlr.stringtemplate.StringTemplateGroup.lookupTemplate(StringTemplateGroup.java:507)
org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(StringTemplateGroup.java:392)
org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(StringTemplateGroup.java:404)
org.antlr.stringtemplate.StringTemplateGroup.lookupTemplate(StringTemplateGroup.java:484)
org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(StringTemplateGroup.java:392)
org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(StringTemplateGroup.java:404)
org.antlr.stringtemplate.StringTemplateGroup.lookupTemplate(StringTemplateGroup.java:484)
org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(StringTemplateGroup.java:392)
org.antlr.stringtemplate.StringTemplateGroup.getInstanceOf(StringTemplateGroup.java:404)
org.antlr.grammar.v2.CodeGenTreeWalker.rewrite_atom(CodeGenTreeWalker.java:3068)
org.antlr.grammar.v2.CodeGenTreeWalker.rewrite_tree(CodeGenTreeWalker.java:3193)
org.antlr.grammar.v2.CodeGenTreeWalker.rewrite_element(CodeGenTreeWalker.java:2666)
org.antlr.grammar.v2.CodeGenTreeWalker.rewrite_alternative(CodeGenTreeWalker.java:2521)
org.antlr.grammar.v2.CodeGenTreeWalker.rewrite(CodeGenTreeWalker.java:1422)
org.antlr.grammar.v2.CodeGenTreeWalker.block(CodeGenTreeWalker.java:1084)
org.antlr.grammar.v2.CodeGenTreeWalker.rule(CodeGenTreeWalker.java:797)
org.antlr.grammar.v2.CodeGenTreeWalker.rules(CodeGenTreeWalker.java:588)
org.antlr.grammar.v2.CodeGenTreeWalker.grammarSpec(CodeGenTreeWalker.java:530)
org.antlr.grammar.v2.CodeGenTreeWalker.grammar(CodeGenTreeWalker.java:336)
org.antlr.codegen.CodeGenerator.genRecognizer(CodeGenerator.java:430)
org.antlr.Tool.generateRecognizer(Tool.java:642)
org.antlr.Tool.process(Tool.java:455)
org.antlr.works.generate.CodeGenerate.generate(CodeGenerate.java:104)
org.antlr.works.generate.CodeGenerate.run(CodeGenerate.java:185)
java.lang.Thread.run(Thread.java:680)
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