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#include <u.h>
#include <libc.h>
#include <thread.h>
#include <bio.h>
#include "apl9.h"
ErrorGuard *globalerrorguard;
Rune *errorstrs[] = {
[ESyntax] = L"SYNTAX ERROR",
[EParse] = L"PARSE ERROR",
[EValue] = L"VALUE ERROR",
[EDomain] = L"DOMAIN ERROR",
[ERank] = L"RANK ERROR",
[EType] = L"TYPE ERROR",
[ELength] = L"LENGTH ERROR",
[EIndex] = L"INDEX ERROR",
[EShape] = L"SHAPE ERROR",
[ENotImplemented] = L"NOT IMPLEMENTED",
};
ErrorGuard *
newerrorguard(Array *codes, Statement *guard)
{
DfnFrame *fr = getcurrentdfn();
ErrorGuard *eg = emallocz(sizeof(ErrorGuard), 1);
eg->active = 1;
eg->guard = guard;
if(fr == nil)
globalerrorguard = eg;
else{
eg->next = fr->errorguards;
fr->errorguards = eg;
eg->frame = dupdfnframe(fr);
}
for(int i = 0; i < GetSize(codes); i++)
eg->code |= (1<<codes->intdata[i]);
return eg;
}
void
throwerror(Rune *msg, int err)
{
ErrorGuard *matching = globalerrorguard;
DfnFrame *frame = getcurrentdfn();
ThreadData *td = getthreaddata();
td->lasterror = err;
if(td->lasterrormsg)
free(td->lasterrormsg);
td->lasterrormsg = msg;
while(frame != nil){
for(ErrorGuard *eg = frame->errorguards; eg != nil; eg = eg->next){
if(!eg->active)
continue;
if(((1<<err) & eg->code) || (eg->code == 1)){
matching = eg;
goto match;
}
}
frame = frame->prev;
popdfnframe();
}
match:
longjmp(matching->jmp, 1);
}
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