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#include "builtins.h"
#include "stack.h"
extern char *str_func;
int ifunc_set(interpreter *it);
int ifunc_label(interpreter *it);
int ifunc_end(interpreter *it);
int ifunc_if(interpreter *it);
int ifunc_do(interpreter *it);
int ifunc_while(interpreter *it);
int ifunc_ret(interpreter *it);
void iload_core(interpreter *interp)
{
inew_cfunc(interp, "set", ifunc_set);
inew_cfunc(interp, "func", ifunc_label);
inew_cfunc(interp, "end", ifunc_end);
inew_cfunc(interp, "if", ifunc_if);
inew_cfunc(interp, "do", ifunc_do);
inew_cfunc(interp, "while", ifunc_while);
inew_cfunc(interp, "ret", ifunc_ret);
}
int ifunc_set(interpreter *it)
{
variable *n = igetarg(it, 0);
variable *v = igetarg(it, 1);
if (n == 0)
return -1;
n->valtype = v->valtype;
n->value = v->value;
n->svalue = v->svalue;
return 0;
}
int ifunc_label(interpreter *it)
{
variable *n = igetarg(it, 0);
if (n == 0)
return -1;
n->valtype = FUNC;
n->value = it->lnidx;
n->svalue = str_func;
it->indent++;
return 0;
}
int ifunc_if(interpreter *it)
{
int v = igetarg_integer(it, 0);
if (v == 0) {
it->indent++;
} else {
void *tmp = ipop(it);
ipush(it, (void *)-1);
ipush(it, tmp);
}
return 0;
}
int ifunc_end(interpreter *it)
{
uint32_t lnidx = (uint32_t)ipop(it) + 1;
if (lnidx != 0)
it->lnidx = lnidx;
return 0;
}
int ifunc_do(interpreter *it)
{
ipush(it, (void *)it->lnidx);
return 0;
}
int ifunc_while(interpreter *it)
{
int c = igetarg_integer(it, 0);
ipop(it);
int nidx = (int)ipop(it);
if (c != 0) {
ipush(it, (void *)nidx);
it->lnidx = nidx;
}
ipush(it, 0);
return 0;
}
int ifunc_ret(interpreter *it)
{
variable *v = igetarg(it, 0);
switch (v->valtype) {
case INTEGER:
inew_integer(it, "RET", INT(v));
break;
case FLOAT:
inew_float(it, "RET", FLOAT(v));
break;
case STRING:
inew_string(it, "RET", v->svalue);
break;
default:
return -1;
break;
}
if (it->ret != 0) {
it->ret->valtype = v->valtype;
it->ret->value = v->value;
it->ret->svalue = v->svalue;
it->ret = 0;
}
return 0;
}
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