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Parsing scripts files through java

bhushan shelke
Greenhorn

Joined: Feb 04, 2001
Posts: 7
Hello All,

I'm working with embeded system, which has standard command set.

I need to store some of those commands in some kind of script file and then parse them sequentially(thr' java) and pass those commands to embeded system (thr' java).
Everything looks simple so far, but real challenge is handling conditional statements for e.g script/command file could be something like -

SET X
MOVETO 1000
X =GETPOSITION
IF(X<1000)
MOVETO (1000-X)

CAPTURE
....

This looks pretty much same as parsing grammar, how can this be achieved in java? Especially conditional parsing and then choosing appropriate path in script.

Thnx in advance.
Paul Clapham
Sheriff

Joined: Oct 14, 2005
Posts: 19691
    
  10

Yes, it is the same as parsing grammar. So that's what you will have to do.
Jesper de Jong
Java Cowboy
Saloon Keeper

Joined: Aug 16, 2005
Posts: 14915
    
  26

There are tools, for example JavaCC, that let you specify the grammar of the language and then generate Java source code that implements a parser for the language.


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