mes/type.c

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/* -*-comment-start: "//";comment-end:""-*-
* Mes --- Maxwell Equations of Software
* Copyright © 2016 Jan Nieuwenhuizen <janneke@gnu.org>
*
* This file is part of Mes.
*
* Mes is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or (at
* your option) any later version.
*
* Mes is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Mes. If not, see <http://www.gnu.org/licenses/>.
*/
#if !TYPE0
scm *
char_p (scm *x)
{
return x->type == CHAR ? &scm_t : &scm_f;
}
scm *
macro_p (scm *x)
{
return x->type == MACRO ? &scm_t : &scm_f;
}
scm *
number_p (scm *x)
{
return x->type == NUMBER ? &scm_t : &scm_f;
}
scm *
pair_p (scm *x)
{
return x->type == PAIR ? &scm_t : &scm_f;
}
scm *
ref_p (scm *x)
{
return x->type == REF ? &scm_t : &scm_f;
}
scm *
string_p (scm *x)
{
return x->type == STRING ? &scm_t : &scm_f;
}
scm *
symbol_p (scm *x)
{
return x->type == SYMBOL ? &scm_t : &scm_f;
}
scm *
vector_p (scm *x)
{
return x->type == VECTOR ? &scm_t : &scm_f;
}
scm *
builtin_p (scm *x)
{
return (x->type == FUNCTION0
|| x->type == FUNCTION1
|| x->type == FUNCTION2
|| x->type == FUNCTION3
|| x->type == FUNCTIONn)
? &scm_t : &scm_f;
}
// Non-types
scm *
null_p (scm *x)
{
return x == &scm_nil ? &scm_t : &scm_f;
}
scm *
atom_p (scm *x)
{
return (x->type == PAIR ? &scm_f : &scm_t);
}
scm *
boolean_p (scm *x)
{
return (x == &scm_t || x == &scm_f) ? &scm_t : &scm_f;
}
#endif
scm*make_number (int);
scm *
mes_type_of (scm *x)
{
return make_number (x->type);
}