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[Grammatica-users] Reusing the Parser and Tokenizer classes
From: |
Luc Morin |
Subject: |
[Grammatica-users] Reusing the Parser and Tokenizer classes |
Date: |
Tue, 13 Jan 2004 13:32:58 -0500 |
Hello,
I'm using Grammatica in one of my ongoing C# projects, and I'm seeing a
possible performance issue.
Right now, whenever I need to parse a string and return the "analyzed" result,
I need to instantiate a new Parser like so (this snippet is taken from my own
analyzer derived class):
public string GetProperty(String input, int obj)
{
string propvalue;
h_object = obj;
Parser parser = new LucParser(new StringReader(input), this);
parser.Parse();
// call the Eplan 21 API getProperty function to retrieve the actual
value
propvalue = getProperty(h_object, propnum, index);
return propvalue;
}
I'm making a lot of calls to this function, and each time the Parser has to be
re-initialized, calling its CreatePatterns() function. The Tokenizer also calls
its own CreatePatterns() function each time. I see this as a performance issue.
Would it be possible to reuse the Parser and Tokenizer classes such that they
get instantiated only once, and then be able to parse() strings without having
to re-init ?
This would imply modifying the code templates I guess. Would it involve a lot
of work from the developers of Grammatica ?
Or maybe this feature is already in there and I just haven't seen it ?
Best regards.
Luc Morin
Electrical Designer
Wulftec / M.J. Maillis Group
Ph.: (819) 838-4232 ext. 232
Fx.: (819) 838-5539
www.wulftec.com
www.maillis.gr
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- [Grammatica-users] Reusing the Parser and Tokenizer classes,
Luc Morin <=