[antlr-interest] "Contextual lexing": Ideas on "nested parsers" and "lexing parsers."

[Vaclav Barta]

On Monday 26 November 2007 15:39:04 Harald Mueller wrote:
> runs are discarded; * Or you pass in some information from the outer
> language parser that you are at a place where the inner language should be
> parsed:
>
> cstmt
>
>     : 'printf'
>
>       '('
>       s=STRING {
>            // we are now in a printf statment -> parse inner language
>            CPrintfLexer innerLexer = ...($s.getText());
>            CPrintfParser innerParser = ...;
>            ... result = innerParser.format();
>            ...
>       }
>       ')'
>
>     | ...
...
> It is straightforward to extend this to more than two nested languages -
> however, I yet have to see an example of a language nested in a language in
> a language ...
I see you aren't using Perl :-) - Perl regular expressions can contain Perl 
code, which can contain regular expressions, etc...

	Bye
		Vasek
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