Parser Hook Problems

SirCmpwn · Posted: 10 Jan 2011 12:21:24 am Post subject: Parser Hook Problems

Hello,
I've been pulling my hair out over this, but I can't seem to figure it out. For some reason, when the parser hook fires for me, the value in BC is always the same, and doesn't represent the token being parsed. Does anyone know why this might be happening?
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Drew "Sir Cmpwn" DeVault

_player1537 · Guru-in-Training Joined: 25 Nov 2009 Posts: 2958

I believe op1 or one of the other's holds the actual token.
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SirCmpwn · Posted: 10 Jan 2011 12:23:19 am Post subject:

Naw, that is always the same as well. And it isn't OP1.
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Drew "Sir Cmpwn" DeVault

_player1537 · Guru-in-Training Joined: 25 Nov 2009 Posts: 2958

http://wikiti.brandonw.net/index.php?title=83Plus:Hooks:9BAC

ParseVar, BegPC, curPC, endPC?
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SirCmpwn · Posted: 10 Jan 2011 12:25:04 am Post subject:

I'm only handling states 1-3, in which case B should contain the token.
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Drew "Sir Cmpwn" DeVault

KermMartian · Posted: 10 Jan 2011 12:38:14 am Post subject:

The ParserHook will fire several times. Are you checking all the times it fires?
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SirCmpwn · Posted: 10 Jan 2011 12:44:29 am Post subject:

Yeah. The code is something like this:

_player1537 · Guru-in-Training Joined: 25 Nov 2009 Posts: 2958

Are you sure whatever it is you are displaying BC with isn't screwing up something you need? Like one of the pointers or something?
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SirCmpwn · Posted: 10 Jan 2011 12:47:50 am Post subject:

I'm sure. When I remove that code, it still crashes.
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Drew "Sir Cmpwn" DeVault

_player1537 · Guru-in-Training Joined: 25 Nov 2009 Posts: 2958

You return Z every time with that code, is that right? "Return Z to run the standard function." (WikiTI)

SirCmpwn · Posted: 10 Jan 2011 12:49:59 am Post subject:

That is correct. Right now, I just want to get through it without crashing.

This is my current code:

KermMartian · Posted: 10 Jan 2011 01:10:45 am Post subject:

jr z, $+2 jumps to the cp a, I believe.
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SirCmpwn · Posted: 10 Jan 2011 01:12:05 am Post subject:

It's not really that, I changed it for readability. There's really a label there.
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Drew "Sir Cmpwn" DeVault

_player1537 · Guru-in-Training Joined: 25 Nov 2009 Posts: 2958

Nope, it doesn't. BrandonW and I worked that out one HCWP, it jumps from the end of instruction. So the literal "jr" followed by a literal 0 will continue execution normally. Err, kinda like what we are talking about :/
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KermMartian · Posted: 10 Jan 2011 01:13:55 am Post subject:

Aren't you using a proper debugging and breakpoints to avoid having to display bc?
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SirCmpwn · Posted: 10 Jan 2011 01:14:41 am Post subject:

KermMartian, this is technically hybrid Axe/Asm.
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Drew "Sir Cmpwn" DeVault

KermMartian · Posted: 10 Jan 2011 01:16:32 am Post subject:

SirCmpwn · Posted: 10 Jan 2011 01:18:08 am Post subject:

My hook works fine for non-class 1 events. But on class 1 events, I get ERR:Argument when exiting with Z reset. With Z set, it works, but still executes the token.
I use the following on my exits, straight from Omnicalc:
-With Parser
xor a
ret
-Without Parser
xor a
inc a
ret
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Drew "Sir Cmpwn" DeVault