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#include "builtins.h"
#include "stack.h"
#include "shelpers.h"
#include <memory.h>
#include <string.h>
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);
int ifunc_else(interpreter *it);
int ifunc_solve(interpreter *it);
const func_t indent_up[IUP_COUNT] = {
ifunc_if, ifunc_do, ifunc_label
};
const func_t indent_down[IDOWN_COUNT] = {
ifunc_else, ifunc_end, ifunc_while,
};
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);
inew_cfunc(interp, "else", ifunc_else);
inew_cfunc(interp, "solve", ifunc_solve);
}
int ifunc_solve(interpreter *it)
{
const char *expr = igetarg_string(it, 0);
int len = strlen(expr);
char *buf = (char *)malloc(len + 2);
strcpy(buf, expr);
buf[len] = ')';
buf[len + 1] = '\0';
variable *r = idoexpr(it, buf);
free(buf);
if (r == 0)
r = make_varn(0, 0.0f);
iret(it, r);
free(r);
return 0;
}
int ifunc_set(interpreter *it)
{
variable *n = igetarg(it, 0);
variable *v = igetarg(it, 1);
if (n == 0)
return -1;
if (n->valtype == STRING)
free((void *)n->value.p);
n->valtype = v->valtype;
n->value.p = v->value.p;
return 0;
}
int ifunc_label(interpreter *it)
{
variable *n = igetarg(it, 0);
if (n == 0)
return -1;
n->valtype = FUNC;
n->value.p = it->lnidx;
iskip(it);
return 0;
}
int ifunc_if(interpreter *it)
{
int v = igetarg(it, 0)->value.p;
if (v == 0)
iskip(it);
void *arg = ipop(it);
ipush(it, (void *)v);
ipush(it, (void *)-1);
ipush(it, arg);
return 0;
}
int ifunc_end(interpreter *it)
{
if (it->stidx == 0)
return 0;
uint32_t lnidx = (uint32_t)ipop(it) + 1;
if (lnidx == 0) { // from an if, have conditional
ipop(it); // whatever
} else {
if (lnidx == (uint32_t)-1) {
// script-func call
lnidx = (uint32_t)ipop(it);
it->indent = (uint32_t)ipop(it);
}
it->lnidx = lnidx;
}
return 0;
}
int ifunc_else(interpreter *it)
{
if (it->stidx == 0)
return 0;
ipop(it); // the -1
int cond = (int)ipop(it);
it->indent++;
if (cond != 0)
iskip(it);
// otherwise it's whatever?
ipush(it, 0);
ipush(it, (void *)-1);
return 0;
}
int ifunc_do(interpreter *it)
{
ipush(it, (void *)it->lnidx);
return 0;
}
int ifunc_while(interpreter *it)
{
int c = igetarg(it, 0)->value.p;
ipop(it);
int nidx = (int)ipop(it);
if (c != 0) {
//ipush(it, (void *)nidx);
it->lnidx = nidx - 1;
}
ipush(it, 0);
return 0;
}
void iret(interpreter *it, variable *v)
{
switch (v->valtype) {
case NUMBER:
inew_number(it, "RET", v->value.f);
break;
case STRING:
inew_string(it, "RET", (char *)v->value.p);
break;
default:
return;
break;
}
if (it->ret != 0) {
if (it->ret->valtype == STRING && it->ret->value.p != 0)
free((void *)it->ret->value.p);
it->ret->valtype = v->valtype;
it->ret->value.p = v->value.p;
it->ret = 0;
}
}
int ifunc_ret(interpreter *it)
{
variable *v = igetarg(it, 0);
iret(it, v);
return 0;
}
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