Subject: Comparison evaluation in XPath
From: Gregory Murphy <Gregory.Murphy@xxxxxxxxxxx>
Date: Thu, 13 Mar 2003 16:56:35 -0800 (PST)
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Looking at the grammar for XPath, it appears that the comparison and
equality operators are left-associative. So,
x > y > z
should be evaluated as if it were
( x > y ) > z
How then should the value be obtained? If evaluation is performed at each
branch of an LALR(1) parse of an XPath expression, then an expression like
3 > 2 > 1
would be reduced first to
true > 1
which would evaluate to false. But shouldn't the answer be true?
// Gregory Murphy <Gregory.Murphy@xxxxxxx>
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