Re: QELFASM V2.0 Question

 

The SEP() generating function itself would call a function to
retrieve
an operand, which would in turn call the appropriate function to
convert the number format into a value. That kind of program
structure may be straightforward to write, and allows extensions to
the format to be made with consistency. Is this something like what
you have?

I forgot to mention that this type of structure is a kind of recursive
descent parser, where the grammar is built in to the subroutine
calling tree structure. For an assembler, it is probably easier than
a table-driven parser (generated from a grammar file, as YACC might
generate.) Dealing with "*" for the current address, and for
multiplication shouldn't be an issue, since it's meaning depends on
where you are in the parsing tree. Similarly, an unexpected "*"
(i.e., the code that gets it expects other stuff) is easily recognized
as an error.

Dave

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