[dna-issues] [JBoss JIRA] Created: (DNA-526) IllegalStateException calling TokenStream.canConsume(String str) after consuming all tokens via canConsume(String[])

Wed Sep 23 11:27:49 EDT 2009

IllegalStateException calling TokenStream.canConsume(String str) after consuming all tokens via canConsume(String[])
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                 Key: DNA-526
                 URL: https://jira.jboss.org/jira/browse/DNA-526
             Project: DNA
          Issue Type: Bug
          Components: Common
            Reporter: Barry LaFond

While parsing, I wished to call canConsume() for multiple "optional" properties.  Some are "multi-string" using canConsume("xxxx", "xxxx", ....)

If a previous canConsume() had finished parsing the tokens (i.e. currentToken == NULL), then a subsequent canConsume("xxxx") would result in the following exception:

java.lang.IllegalStateException: The 'start()' method must be called before tokens can be consumed or matched
	at org.jboss.dna.common.text.TokenStream.currentToken(TokenStream.java:1160)
	at org.jboss.dna.common.text.TokenStream.matches(TokenStream.java:866)
	at org.jboss.dna.common.text.TokenStream.canConsume(TokenStream.java:609)
	at ....

It appears that the canConsume( <MULTIPLE> ) methods do NOT call moveToNextToken() which is currently the only method that sets this.completed = TRUE.

Fix would be to add:  this.completed = this.currentToken == NULL before returning on the canConsume( <MULTIPLE> ) methods.

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