Implementing own parser.yy.parseError function throws error

[mebibou]

When using the generated javascript parser file, and implementing my own parseError function like:

parser.yy.parseError = function(error, hash) {...};

gives the following error every time I parse something: TypeError: Cannot read property '0' of undefined You can find a working example here: http://jsfiddle.net/fLknW/

It seems to me that the algorithm should stop after it calls parseError(errStr, {...}) since action will always be undefined. The error is not thrown when not overriding the default implementation of parseError since by default it does throw new Error(str); which stops the algorithm

[XavierBoubert]

:+1:

[rubenvereecken]

No one ever got around to this one then?

[mathiasrw]

Anything new on this?

[rubenvereecken]

Since jison doesn't have yyerror support anyway I just ended up catching the error somewhere in my wrapper code and working with the error object from there.

[mathiasrw]

:-/

[yosbelms]

Have you tried to define a parseError function in the parser scope? This works for me.

yy = { };
yy.parseError = function(msg, hash) {
     doSomething();
}
parser.yy = yy;