[antlr-interest] rewrites to capture tree structure and original text
David Wood
dawood at us.ibm.com
Fri Oct 7 12:55:43 PDT 2011
I am writing a translator and would like to capture the original text that
I'm translating. I've tried something like this in AW
declarationStatement
: tableType id tupleDeclList ';' (LINE_COMMENT)? ->
^(TABLEDECL tableType id tupleDeclList ^(TEXT
$declarationStatement.text))
;
In addition, this causes a NPE (see below). I'm sure I'm making this
harder and/or have missed something somewhere. Can someone point in the
right direction? Thanks.
[15:54:27] java.lang.NullPointerException
at
org.antlr.grammar.v3.DefineGrammarItemsWalker.countAltsForRule(DefineGrammarItemsWalker.java:153)
at
org.antlr.grammar.v3.DefineGrammarItemsWalker.rule(DefineGrammarItemsWalker.java:1546)
at
org.antlr.grammar.v3.DefineGrammarItemsWalker.rules(DefineGrammarItemsWalker.java:1190)
at
org.antlr.grammar.v3.DefineGrammarItemsWalker.grammarSpec(DefineGrammarItemsWalker.java:623)
at
org.antlr.grammar.v3.DefineGrammarItemsWalker.grammar_(DefineGrammarItemsWalker.java:315)
at org.antlr.tool.Grammar.defineGrammarSymbols(Grammar.java:748)
at
org.antlr.tool.CompositeGrammar.defineGrammarSymbols(CompositeGrammar.java:369)
at org.antlr.tool.Grammar.setGrammarContent(Grammar.java:606)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createNewGrammar(ANTLRGrammarEngineImpl.java:192)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createParserGrammar(ANTLRGrammarEngineImpl.java:225)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createCombinedGrammar(ANTLRGrammarEngineImpl.java:203)
at
org.antlr.works.grammar.antlr.ANTLRGrammarEngineImpl.createGrammars(ANTLRGrammarEngineImpl.java:165)
at
org.antlr.works.grammar.engine.GrammarEngineImpl.getGrammarLanguage(GrammarEngineImpl.java:115)
at
org.antlr.works.components.GrammarWindowMenu.getEditTestRigTitle(GrammarWindowMenu.java:244)
...
David Wood
Computing Systems for Wireless Networks
IBM TJ Watson Research Center
dawood at us.ibm.com
914-784-5123 (office), 914-396-6515 (mobile)
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