help: defining grammer?

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Hello,

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I was wondering if anyone could help me begin to write some grammer for
a conversion project.  I basically have a generic language where
variables, arrays, and hash's are defined.  I want these variables to be
translated to a tool specific datastructure, i.e TCL, scheme, etc.  I am
assuming I would have to create a different set of grammar(s) for each
language I want the variables translated to.  However, I am having
trouble defining the grammar for parsing the genericLanguange.  Could
you help me get started by showing me how I would go about parsing the
below 3 structures in the GenericLangauge section below.  I would
appreciate any insight or suggestions.

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Thanks in advance,

-Phillip

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e.g. for example

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__GenericLanguage__

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$var =3D 10

$var1 =3D "variable1"

@var2 =3D [1,2,3]

%var3 =3D {'key1'=3D>'value1', 'key2'=3D>'value2}

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__Translate-to-SchemeLanguage__

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Define var1 =3D variable1

Define var2 =3D '(1 2 3)

...

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__Translate-to-TCLLanguage__

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Set var1 variable

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