It now just uses "words" and regular pattern matches rather than regular
expressions. The resulting code is quite a bit simpler, and goes much faster.
I've added some unit tests for it too.
It's redundant, since you can always compute them from the variable, and it
makes the code that deals with actuals rather cleaner.
On the other hand, it slightly complicates some of the tests, because any names
you use in an Actual need to be defined...
This touches an awful lot of code, but cgtest07/17 (arrays and retyping) pass.
This is useful because there are going to be places in the future where we'll
want to represent dimensions that are known at runtime but not at compile time
-- for example, mobile allocations, or dynamically-sized arrays. It simplifies
the code in a number of places.
However, we do now need to be careful that expressions containing variables do
not leak into the State, since they won't be affected by later passes.
Two caveats (marked as FIXMEs in the source):
- Retypes checking in the occam parser is disabled, since the plan is to move
it out to a pass anyway.
- There's some (now very obvious) duplication, particularly in the backend, of
bits of code that construct expressions for the total size of an array
(either in bytes or elements); this should be moved to a couple of helper
functions that everything can use.
Procs that are in csParProcs are now generated with the correct calling
convention directly, rather than having a second wrapper function generated
around them.
GCC seems to very occasionally generate addl -N rather than subl N.
Also don't allow subl -N any more -- if it's adjusting the stack pointer back
up, that doesn't mean it's going to use any less of the stack...
All it did was to make a list of the Procs generated by parsToProcs, so
parsToProcs may as well just do the same job itself.
The reason I'd made it a separate pass originally was that I wanted to
optimise out the wrapper when the child of a Par was already a ProcCall.
That optimisation isn't going to be possible any more with the new CCSP,
since wrappers have to fetch their arguments in a different way from
ordinary Procs.
If stdin is in use, it'll now be put into non-canonical mode. This is almost
the same as libkrocif's behaviour, except I've set VTIME to 0, since I don't
think there's a good reason to have a terminal read complete if no characters
are available.
This also sets CCSP's branding to "Tock", so error messages now start "Tock: ".
