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#include "print.h"
#include "errloc.h"
#include "fn.h"
#include "lit.h"
#include "parse.h"
#include "prv.h"
#include "stmt.h"
#include "sym.h"
#include "type.h"
#include <stdlib.h>
static int etc(const struct lex *, struct prv *);
static const struct seq seqs[] =
{
{(struct step[]){{ID, "etc"}, {0}}, .fn = etc},
{0}
};
static int invalid(const struct sym *s, const struct type *t)
{
char *tn = type_name(t);
if (tn)
errloc(s->tk, "cannot print type \"%s\"", tn);
free(tn);
return -1;
}
static const struct sym *inner(const struct sym *s)
{
for (; s; s = s->child)
if (!s->child)
break;
return s;
}
static int setptr(struct prv *p, const struct sym *s, struct prisym *ps,
const struct type *t)
{
const struct fn *fn = fn_cur(p);
const struct stentry *e = fn_var(fn, s->tk);
if (!e)
{
errloc(s->tk, "undefined reference to \"%s\"", s->tk->s);
return -1;
}
ps->type = PRS_PTR;
ps->u.e = e;
return 0;
}
static int settype(struct prv *p, const struct sym *s, struct prisym *ps)
{
const struct type *t = sym_type(p, s);
const struct tk *tk = s->tk;
if (!t)
{
errloc(tk, "undefined reference to \"%s\"", tk->s);
return -1;
}
else if (inner(s)->type == SYM_LIT)
{
const struct lit *l = lit_push(tk, p);
if (!l)
return -1;
else if (t == p->ast->littype)
{
ps->type = PRS_LIT;
ps->u.lit = l;
}
else
{
ps->type = PRS_NAM;
ps->u.name = l->name;
}
}
else
switch (t->type)
{
case U:
case S:
case T:
case ARY:
return invalid(s, t);
case C:
case BUILTIN:
fprintf(stderr, "%s: TODO\n", __func__);
return -1;
case P:
ps->type = PRS_NAM;
ps->u.name = s->tk->s;
break;
case PTR:
return setptr(p, s, ps, t);
}
return 0;
}
static int onsym(const struct lex *l, struct prv *p, const struct sym *s)
{
struct stmt *stmt = stmt_cur(p);
struct print *pr = &stmt->u.print;
size_t n = pr->nsyms + 1;
struct prisym *syms, *nsym;
if (!(syms = realloc(pr->syms, n * sizeof *syms)))
{
perror("realloc(3)");
return -1;
}
pr->syms = syms;
nsym = &syms[pr->nsyms++];
*nsym = (struct prisym){.s = s};
return settype(p, s, nsym);
}
static int etc(const struct lex *l, struct prv *p)
{
struct stmt *stmt = stmt_cur(p);
struct print *pr = &stmt->u.print;
pr->skipln = 1;
reset(p);
return 0;
}
void print_free(struct print *pr)
{
free(pr->syms);
}
int print(const struct lex *l, struct prv *p)
{
struct pos init =
{
.name = __func__,
.seq = seqs
};
if (push(&init, p))
return -1;
return sym(p, onsym);
}
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