static struct expr *
vcc_expr_edit(enum var_type fmt, const char *p, struct expr *e1,
struct expr *e2)
{
struct expr *e;
int nl = 1;
e = vcc_new_expr();
while (*p != '\0') {
if (*p == '\n') {
if (!nl)
VSB_putc(e->vsb, *p);
nl = 1;
p++;
continue;
}
nl = 0;
if (*p != '\v') {
VSB_putc(e->vsb, *p);
p++;
continue;
}
assert(*p == '\v');
p++;
switch(*p) {
case '+': VSB_cat(e->vsb, "\v+"); break;
case '-': VSB_cat(e->vsb, "\v-"); break;
case '1':
case '2':
if (*p == '1')
VSB_cat(e->vsb, VSB_data(e1->vsb));
else {
AN(e2);
VSB_cat(e->vsb, VSB_data(e2->vsb));
}
break;
default:
assert(__LINE__ == 0);
}
p++;
}
AZ(VSB_finish(e->vsb));
if (e1 != NULL)
e->t1 = e1->t1;
else if (e2 != NULL)
e->t1 = e2->t1;
if (e2 != NULL)
e->t2 = e2->t1;
else if (e1 != NULL)
e->t1 = e1->t1;
if ((e1 == NULL || e1->constant) && (e2 == NULL || e2->constant))
e->constant = 1;
vcc_delete_expr(e1);
vcc_delete_expr(e2);
e->fmt = fmt;
return (e);
}
static void
vcc_Eval_Regsub(struct vcc *tl, struct expr **e, const struct symbol *sym)
{
struct expr *e2;
int all = sym->eval_priv == NULL ? 0 : 1;
char *p;
char buf[128];
vcc_delete_expr(*e);
SkipToken(tl, ID);
SkipToken(tl, '(');
vcc_expr0(tl, &e2, STRING);
if (e2->fmt != STRING)
vcc_expr_tostring(&e2, STRING);
SkipToken(tl, ',');
ExpectErr(tl, CSTR);
p = vcc_regexp(tl);
vcc_NextToken(tl);
bprintf(buf, "VRT_regsub(sp, %d,\n\v1,\n%s\n", all, p);
*e = vcc_expr_edit(STRING, buf, e2, *e);
SkipToken(tl, ',');
vcc_expr0(tl, &e2, STRING);
if (e2->fmt != STRING)
vcc_expr_tostring(&e2, STRING);
*e = vcc_expr_edit(STRING, "\v1, \v2)", *e, e2);
SkipToken(tl, ')');
}
void
vcc_Expr(struct vcc *tl, enum var_type fmt)
{
struct expr *e;
struct token *t1;
assert(fmt != VOID);
t1 = tl->t;
vcc_expr0(tl, &e, fmt);
ERRCHK(tl);
if (fmt == STRING || fmt == STRING_LIST)
vcc_expr_tostring(&e, fmt);
if (!tl->err && fmt != e->fmt) {
VSB_printf(tl->sb, "Expression has type %s, expected %s\n",
vcc_Type(e->fmt), vcc_Type(fmt));
tl->err = 1;
}
if (!tl->err) {
if (e->fmt == STRING_LIST) {
e = vcc_expr_edit(STRING_LIST,
"\v+\n\v1,\nvrt_magic_string_end\v-", e, NULL);
}
vcc_expr_fmt(tl->fb, tl->indent, e);
VSB_putc(tl->fb, '\n');
} else {
if (t1 != tl->t)
vcc_ErrWhere2(tl, t1, tl->t);
}
vcc_delete_expr(e);
}
static struct expr *
vcc_expr_edit(enum var_type fmt, const char *p, struct expr *e1,
struct expr *e2)
{
struct expr *e;
int nl = 1;
AN(e1);
e = vcc_new_expr();
while (*p != '\0') {
if (*p != '\v') {
if (*p != '\n' || !nl)
VSB_putc(e->vsb, *p);
nl = (*p == '\n');
p++;
continue;
}
assert(*p == '\v');
switch(*++p) {
case '+': VSB_cat(e->vsb, "\v+"); break;
case '-': VSB_cat(e->vsb, "\v-"); break;
case '1':
VSB_cat(e->vsb, VSB_data(e1->vsb));
break;
case '2':
AN(e2);
VSB_cat(e->vsb, VSB_data(e2->vsb));
break;
default:
WRONG("Illegal edit in VCC expression");
}
p++;
}
AZ(VSB_finish(e->vsb));
e->t1 = e1->t1;
e->t2 = e1->t2;
if (e2 != NULL)
e->t2 = e2->t2;
vcc_delete_expr(e1);
vcc_delete_expr(e2);
e->fmt = fmt;
return (e);
}
void
vcc_Eval_Func(struct vcc *tl, const char *cfunc,
const char *extra, const char *name, const char *args)
{
struct expr *e = NULL;
struct token *t1;
t1 = tl->t;
vcc_func(tl, &e, cfunc, extra, name, args);
if (!tl->err) {
vcc_expr_fmt(tl->fb, tl->indent, e);
VSB_cat(tl->fb, ";\n");
} else if (t1 != tl->t) {
vcc_ErrWhere2(tl, t1, tl->t);
}
vcc_delete_expr(e);
}
void
vcc_Expr_Call(struct vcc *tl, const struct symbol *sym)
{
struct expr *e;
struct token *t1;
t1 = tl->t;
e = NULL;
vcc_Eval_Func(tl, &e, sym);
if (!tl->err) {
vcc_expr_fmt(tl->fb, tl->indent, e);
VSB_cat(tl->fb, ";\n");
} else if (t1 != tl->t) {
vcc_ErrWhere2(tl, t1, tl->t);
}
vcc_delete_expr(e);
}