December 2009
Intermediate to advanced
380 pages
9h 2m
English
Content preview from Language Implementation PatternsBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Chapter 2Basic Parsing Patterns
Language recognition is a critical step in just about any language application. To interpret or translate a phrase, we first have to recognize what kind of phrase it is (sentences are made up of phrases). Once we know that a phrase is an assignment or function call, for example, we can act on it. To recognize a phrase means two things. First, it means we can distinguish it from the other constructs in that language. And, second, it means we can identify the elements and any substructures of the phrase. For example, if we recognize a phrase as an assignment, we can identify the variable on the left of the = and the expression substructure on the right. The act of recognizing a phrase by computer is called parsing ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.