Re: XML Parsers (Push and Pull)

I'll admit it: This has me confused.


As I understand it, "push" requires a lexer to be fed input one character at
a time, which raises an event when it has a complete token. This event
calls a method of the parser (usually LR(1)?) which feeds it the token.


OTOH, "pull" has a parser calling a lexer, which itself reads source
characters from a buffer already in memory.


I've had to do both at one time or another, but they seem only to be
slightly different implementations of identical methodology. What am I
missing?


(Note that I am not an academic nor involved in the formal study of compiler
theory. I simply have to know bits and pieces in order to complete
projects, and find it very interesting.)


R. L. Watkins


----- Original Message -----
From: "isterin" <isterin@hotmail.com>


> There are two main ways to parse XML, push which is event driven, and
> pull which is in memory. All material and documentation that I've
> read states that these are the two major ways of parsing XML, never
> does it state that these are the only ways.

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