I'm writing an IDE for DWScript and have got it stepping through code using the debugger. I now wish to add a display of 'local variables' (i.e those in scope). Can someone give me a pointer to the means of doing this? I can get a list of all symbols but do not understand how to get the current scope part of things. Thanks.
Cast the IdwsProgramExecution to TdwsProgramExecution, you'll gain access to a "CurrentProg", property, a TdwsProgram which is either a TdwsMainProgram (if you're in the main) or a TdwsProcedure (if you're in a proc/func/method). Those will have a Table property, which lists the local symbols, that's the most direct scope. That Table will have one or more Parents, which refers the parent scopes (hierarchically, in terms of source code scope).
If in a TdwsProcedure, you may also want to look at its FuncSymbol property, which will have a table of parameters (useful if you want to directly isolate the parameters from the rest of the local scope)