15.9 Creating the Jaql Parser


 
Building Parsers with Java
By Steven  John  Metsker

Table of Contents
Chapter  15.   Parsing a Query Language

    Content

The code for the parsers ( ComparisonParser and JaqlParser ) is in each case almost a direct translation of the grammars, following the rules in Section 3.6 "Translating a Grammar to Code." Both parsers require a Speller instance variable and a constructor that accepts a speller. A JaqlParser object passes its speller to a ComparisonParser object, which uses the speller when it sees a variable name .

Other than spelling, the only addition to make to ComparisonParser and JaqlParser in sjm.examples.query is to plug in their assemblers.


   
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Building Parsers with Java
Building Parsers With Javaв„ў
ISBN: 0201719622
EAN: 2147483647
Year: 2000
Pages: 169

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