Tokenizing D at compile time?

[dsimcha]

I'm working on a parallel array ops implementation for 
std.parallel_algorithm.  (For the latest work in progress see 
https://github.com/dsimcha/parallel_algorithm/blob/master/parallel_algorithm.d 
).

To make it (somewhat) pretty, I need to be able to tokenize a single 
statement worth of D source code at compile time.  Right now, the syntax 
requires manual tokenization:

mixin(parallelArrayOp(
    "lhs[]", "=", "op1[]", "*", "op2[]", "/", "op3[]"
));

where lhs, op1, op2, op3 are arrays.

I'd like it to be something like:

mixin(parallelArrayOp(
     "lhs[] = op1[] * op2[] / op3[]"
));

Does anyone have/is there any easy way to write a compile-time D tokenizer?