described in the textbook readings, Parse performs syntactic analysis

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2.2 - Syntactic Analysis and the Parser

As described in the textbook readings, Parse performs syntactic analysis. It takes the token stream produced by the Scanner and outputs a Parse Tree.

English Example

Again, by way of analogy to English, the parser attempts to validate the arrangement of words into well-formed phrases. Here are some examples of syntax errors in English from (Hofstadter, 1985) and (Yoda, a long time ago),

"Wars not make one great."

"This sentence no verb." "This is not a complete." "Sentence", "This either."

Although the meaning (semantics) of these sentences are clear, the grammar (syntax) isn't considered to be correct.

Program Example

Here's an example parse tree corresponding to the program previously introduced (Section 1.2.2)

 

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