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#include <u.h>
#include <libc.h>
#include <bio.h>
#include <pool.h>
#include "apl9.h"
Biobuf *stdin;
void
main(int argc, char *argv[])
{
int off = 0;
stdin = Bfdopen(0, OREAD);
initsymtab();
initquadnames();
traceeval = 0;
debugmem = 0;
ARGBEGIN{
case 't':
traceeval = 1;
break;
case 'm':
debugmem = 1;
mainmem->flags |= POOL_NOREUSE;
break;
}ARGEND
int errorcode;
restart:
SETUPERROR(errorcode);
if(errorcode){
/* remove aborted dfn frames */
while(getcurrentdfn())
popdfnframe();
if(globalerror.msg)
print("%S: %S\n", errorstrs[errorcode], globalerror.msg);
else
print("%S\n", errorstrs[errorcode]);
goto restart;
}
while(!off){
checkmem("main loop");
print("\t");
Datum *result = evalline(nil, stdin, 1);
if(result == nil)
continue;
else{
if(result[0].shy == 0)
print("%S\n", ppdatum(*result));
if(result->tag == ArrayTag)
freearray(result->array);
free(result);
}
/* print("Unfreed arrays: %d\n", alloccounts); */
}
exits(nil);
}
Rune *
prompt(Rune *pr)
{
Rune line[MAX_LINE_LENGTH];
print("%S",pr);
int i = 0;
line[0] = 0;
while(i == 0 || line[i-1] != '\n')
line[i++] = Bgetrune(stdin);
line[i-1] = 0;
return runestrdup(line);
}
Datum *
evalline(Rune *line, Biobuf *bio, int toplevel)
{
Statement *stmts;
if(line)
stmts = lexlinestr(line, toplevel);
else if(bio)
stmts = lexlinebio(bio, toplevel);
else
stmts = lexlinebio(stdin, toplevel);
Datum *result = eval(stmts, toplevel);
if(result)
return result;
else{
Statement *s = stmts;
while(s != nil){
Statement *tmp = s;
s = s->next;
free(tmp->toks);
free(tmp);
}
return nil;
}
}
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