qse/ase/lsp/prim.c

400 lines
8.4 KiB
C

/*
* $Id: prim.c,v 1.7 2005-09-20 12:06:51 bacon Exp $
*/
#include <xp/lsp/lsp.h>
#include <xp/lsp/mem.h>
#include <xp/lsp/prim.h>
#include <xp/bas/string.h>
#include <xp/bas/assert.h>
static int __add_prim (xp_lsp_mem_t* mem,
const xp_char_t* name, xp_size_t len, xp_lsp_prim_t prim);
int xp_lsp_add_prim (
xp_lsp_t* lsp, const xp_char_t* name, xp_lsp_prim_t prim)
{
return __add_prim (lsp->mem, name, xp_strlen(name), prim);
}
int xp_lsp_remove_prim (xp_lsp_t* lsp, const xp_char_t* name)
{
// TODO:
return -1;
}
static int __add_prim (xp_lsp_mem_t* mem,
const xp_char_t* name, xp_size_t len, xp_lsp_prim_t prim)
{
xp_lsp_obj_t* n, * p;
n = xp_lsp_make_symbolx (mem, name, len);
if (n == XP_NULL) return -1;
xp_lsp_lock (n);
p = xp_lsp_make_prim (mem, prim);
if (p == XP_NULL) return -1;
xp_lsp_unlock (n);
if (xp_lsp_set_func(mem, n, p) == XP_NULL) return -1;
return 0;
}
xp_lsp_obj_t* xp_lsp_prim_abort (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 0, 0);
lsp->errnum = XP_LSP_ERR_ABORT;
return XP_NULL;
}
xp_lsp_obj_t* xp_lsp_prim_eval (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
xp_lsp_obj_t* tmp;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 1, 1);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
tmp = xp_lsp_eval (lsp, XP_LSP_CAR(args));
if (tmp == XP_NULL) return XP_NULL;
tmp = xp_lsp_eval (lsp, tmp);
if (tmp == XP_NULL) return XP_NULL;
return tmp;
}
xp_lsp_obj_t* xp_lsp_prim_gc (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 0, 0);
xp_lsp_garbage_collect (lsp->mem);
return lsp->mem->nil;
}
xp_lsp_obj_t* xp_lsp_prim_cond (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (cond
* (condition1 result1)
* (consition2 result2)
* ...
* (t resultN))
*/
xp_lsp_obj_t* tmp, * ret;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 0, XP_LSP_PRIM_MAX_ARG_COUNT);
while (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS) {
if (XP_LSP_TYPE(XP_LSP_CAR(args)) != XP_LSP_OBJ_CONS) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
tmp = xp_lsp_eval (lsp, XP_LSP_CAR(XP_LSP_CAR(args)));
if (tmp == XP_NULL) return XP_NULL;
if (tmp != lsp->mem->nil) {
tmp = XP_LSP_CDR(XP_LSP_CAR(args));
ret = lsp->mem->nil;
while (XP_LSP_TYPE(tmp) == XP_LSP_OBJ_CONS) {
ret = xp_lsp_eval (lsp, XP_LSP_CAR(tmp));
if (ret == XP_NULL) return XP_NULL;
tmp = XP_LSP_CDR(tmp);
}
if (tmp != lsp->mem->nil) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
return ret;
}
args = XP_LSP_CDR(args);
}
return lsp->mem->nil;
}
xp_lsp_obj_t* xp_lsp_prim_if (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
xp_lsp_obj_t* tmp;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 2, XP_LSP_PRIM_MAX_ARG_COUNT);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
tmp = xp_lsp_eval (lsp, XP_LSP_CAR(args));
if (tmp == XP_NULL) return XP_NULL;
if (tmp != lsp->mem->nil) {
tmp = xp_lsp_eval (lsp, XP_LSP_CAR(XP_LSP_CDR(args)));
if (tmp == XP_NULL) return XP_NULL;
return tmp;
}
else {
xp_lsp_obj_t* res = lsp->mem->nil;
tmp = XP_LSP_CDR(XP_LSP_CDR(args));
while (XP_LSP_TYPE(tmp) == XP_LSP_OBJ_CONS) {
res = xp_lsp_eval (lsp, XP_LSP_CAR(tmp));
if (res == XP_NULL) return XP_NULL;
tmp = XP_LSP_CDR(tmp);
}
if (tmp != lsp->mem->nil) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
return res;
}
}
xp_lsp_obj_t* xp_lsp_prim_while (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (setq a 1)
* (while (< a 100) (setq a (+ a 1)))
*/
xp_lsp_obj_t* tmp;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 1, XP_LSP_PRIM_MAX_ARG_COUNT);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
for (;;) {
tmp = xp_lsp_eval (lsp, XP_LSP_CAR(args));
if (tmp == XP_NULL) return XP_NULL;
if (tmp == lsp->mem->nil) break;
tmp = XP_LSP_CDR(args);
while (XP_LSP_TYPE(tmp) == XP_LSP_OBJ_CONS) {
if (xp_lsp_eval(lsp, XP_LSP_CAR(tmp)) == XP_NULL)
return XP_NULL;
tmp = XP_LSP_CDR(tmp);
}
if (tmp != lsp->mem->nil) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
}
return lsp->mem->nil;
}
xp_lsp_obj_t* xp_lsp_prim_car (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (car '(10 20 30))
*/
xp_lsp_obj_t* tmp;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 1, 1);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
tmp = xp_lsp_eval (lsp, XP_LSP_CAR(args));
if (tmp == XP_NULL) return XP_NULL;
if (tmp == lsp->mem->nil) return lsp->mem->nil;
if (XP_LSP_TYPE(tmp) != XP_LSP_OBJ_CONS) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
return XP_LSP_CAR(tmp);
}
xp_lsp_obj_t* xp_lsp_prim_cdr (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (cdr '(10 20 30))
*/
xp_lsp_obj_t* tmp;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 1, 1);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
tmp = xp_lsp_eval (lsp, XP_LSP_CAR(args));
if (tmp == XP_NULL) return XP_NULL;
if (tmp == lsp->mem->nil) return lsp->mem->nil;
if (XP_LSP_TYPE(tmp) != XP_LSP_OBJ_CONS) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
return XP_LSP_CDR(tmp);
}
xp_lsp_obj_t* xp_lsp_prim_cons (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (cons 10 20)
* (cons '(10 20) 30)
*/
xp_lsp_obj_t* car, * cdr, * cons;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 2, 2);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
car = xp_lsp_eval (lsp, XP_LSP_CAR(args));
if (car == XP_NULL) return XP_NULL;
cdr = xp_lsp_eval (lsp, XP_LSP_CAR(XP_LSP_CDR(args)));
if (cdr == XP_NULL) return XP_NULL;
cons = xp_lsp_make_cons (lsp->mem, car, cdr);
if (cons == XP_NULL) {
lsp->errnum = XP_LSP_ERR_MEM;
return XP_NULL;
}
return cons;
}
xp_lsp_obj_t* xp_lsp_prim_set (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (set 'flowers 'rose)
* (set flowers 20)
* (rose)
*/
xp_lsp_obj_t* p1, * p2;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 2, 2);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
p1 = xp_lsp_eval (lsp, XP_LSP_CAR(args));
if (p1 == XP_NULL) return XP_NULL;
if (XP_LSP_TYPE(p1) != XP_LSP_OBJ_SYMBOL) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
p2 = xp_lsp_eval (lsp, XP_LSP_CAR(XP_LSP_CDR(args)));
if (p2 == XP_NULL) return XP_NULL;
if (xp_lsp_set_value (lsp->mem, p1, p2) == XP_NULL) {
lsp->errnum = XP_LSP_ERR_MEM;
return XP_NULL;
}
return p2;
}
xp_lsp_obj_t* xp_lsp_prim_setq (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (setq x 10)
* (setq x "stirng")
*/
xp_lsp_obj_t* p = args, * p1, * p2 = lsp->mem->nil;
while (p != lsp->mem->nil) {
xp_assert (XP_LSP_TYPE(p) == XP_LSP_OBJ_CONS);
p1 = XP_LSP_CAR(p);
if (XP_LSP_TYPE(p1) != XP_LSP_OBJ_SYMBOL) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
if (XP_LSP_TYPE(XP_LSP_CDR(p)) != XP_LSP_OBJ_CONS) {
lsp->errnum = XP_LSP_ERR_TOO_FEW_ARGS;
return XP_NULL;
}
p2 = xp_lsp_eval (lsp, XP_LSP_CAR(XP_LSP_CDR(p)));
if (p2 == XP_NULL) return XP_NULL;
if (xp_lsp_set_value (lsp->mem, p1, p2) == XP_NULL) {
lsp->errnum = XP_LSP_ERR_MEM;
return XP_NULL;
}
p = XP_LSP_CDR(XP_LSP_CDR(p));
}
return p2;
}
xp_lsp_obj_t* xp_lsp_prim_quote (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (quote (10 20 30 50))
*/
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 1, 1);
xp_assert (XP_LSP_TYPE(args) == XP_LSP_OBJ_CONS);
return XP_LSP_CAR(args);
}
xp_lsp_obj_t* xp_lsp_prim_defun (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (defun x (a b) (+ a b 100))
* (x 40 50)
*
* (setq x (lambda (x y) (setq temp 10) (+ x y temp)))
* (x 40 50)
* temp
*/
xp_lsp_obj_t* name, * fun;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 3, XP_LSP_PRIM_MAX_ARG_COUNT);
name = XP_LSP_CAR(args);
if (XP_LSP_TYPE(name) != XP_LSP_OBJ_SYMBOL) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
fun = xp_lsp_make_func (lsp->mem,
XP_LSP_CAR(XP_LSP_CDR(args)), XP_LSP_CDR(XP_LSP_CDR(args)));
if (fun == XP_NULL) return XP_NULL;
if (xp_lsp_set_func (lsp->mem, XP_LSP_CAR(args), fun) == XP_NULL) {
lsp->errnum = XP_LSP_ERR_MEM;
return XP_NULL;
}
return fun;
}
xp_lsp_obj_t* xp_lsp_prim_demac (xp_lsp_t* lsp, xp_lsp_obj_t* args)
{
/*
* (demac x (abc) x y z)
*(setq x (macro (abc) x y z))
*/
xp_lsp_obj_t* name, * mac;
XP_LSP_PRIM_CHECK_ARG_COUNT (lsp, args, 3, XP_LSP_PRIM_MAX_ARG_COUNT);
name = XP_LSP_CAR(args);
if (XP_LSP_TYPE(name) != XP_LSP_OBJ_SYMBOL) {
lsp->errnum = XP_LSP_ERR_BAD_ARG;
return XP_NULL;
}
mac = xp_lsp_make_macro (lsp->mem,
XP_LSP_CAR(XP_LSP_CDR(args)), XP_LSP_CDR(XP_LSP_CDR(args)));
if (mac == XP_NULL) return XP_NULL;
if (xp_lsp_set_func (lsp->mem, XP_LSP_CAR(args), mac) == XP_NULL) {
lsp->errnum = XP_LSP_ERR_MEM;
return XP_NULL;
}
return mac;
}