[antlr-interest] simple function call translator

[jm42163jm]

Howdy, at work, we have a simple rules engine in powerbuilder that 
reads a condition field, a operator field, a result field and a 
consequence field from a table. This information is entered to the 
table via client server app to define when to apply computed fields 
and field properties (hidden, disabled, etc..) to a client / server 
screen - similar to a rudimentary workflow e.g. 
condition field: function(paramter_expression, parameter_ 
expresion,...)

operator: standar logical operator 

result: function(paramter_expression, paramter_ expression,...)

parameter_expression: could be another function call, a 
value/variable, or an expression

the consequence will be a computed field, e.g. function call, a 
value/variable, or an expression

we need to be able to translate these powerbuilder function calls 
into java function calls that reproduce the same functionality

what tool is best to do this type of translation?

what do I do since I do not have a formal grammar - I only have the 
function declarations, and an understanding that this does not have 
to be completey robust as only a subset of powerbuilder functions are 
involved and there are no standard programming constructs (loops, 
conditions, assignments, etc..)?










 
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