[antlr-interest] parser/lexer invocation: performance/optimization question

[Margaret Fieland]

 I have a parser/lexer that is repeatedly invoked to parse a
succession of strings.

The current implementation is that the application invokes a routine
that does something like:

string source("Your input text");
istringstream str(source);

MyLexer lexer(str);
MyParser parser(lexer);
 ... initializeASTFactory
 ... setASTFactory

This routine is invoked literally thousands of times.

I'd like to be able to the setup (above) once in a constructor and
just invoke the parser multiple times on the strings as I would like
to avoid the overhead in the initialization.  

Is there any way to do this?  Nothing I've tried so far has worked.

Thanks.

Peggy



 
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