qse/ase/lsp/prim.c

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/*
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* $Id: prim.c,v 1.20 2007-02-06 10:57:01 bacon Exp $
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*
* {License}
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*/
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#include <ase/lsp/lsp_i.h>
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static int __add_prim (ase_lsp_mem_t* mem,
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const ase_char_t* name, ase_size_t len,
ase_lsp_prim_t pimpl, ase_size_t min_args, ase_size_t max_args);
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int ase_lsp_addprim (
ase_lsp_t* lsp, const ase_char_t* name, ase_size_t name_len,
ase_lsp_prim_t prim, ase_size_t min_args, ase_size_t max_args)
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{
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return __add_prim (lsp->mem, name, name_len, prim, min_args, max_args);
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}
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int ase_lsp_removeprim (ase_lsp_t* lsp, const ase_char_t* name)
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{
// TODO:
return -1;
}
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static int __add_prim (ase_lsp_mem_t* mem,
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const ase_char_t* name, ase_size_t name_len,
ase_lsp_prim_t pimpl, ase_size_t min_args, ase_size_t max_args)
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{
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ase_lsp_obj_t* n, * p;
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n = ase_lsp_makesym (mem, name, name_len);
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if (n == ASE_NULL) return -1;
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ase_lsp_lockobj (mem->lsp, n);
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p = ase_lsp_makeprim (mem, pimpl, min_args, max_args);
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if (p == ASE_NULL)
{
ase_lsp_unlockobj (mem->lsp, n);
return -1;
}
ase_lsp_lockobj (mem->lsp, p);
if (ase_lsp_setfunc(mem, n, p) == ASE_NULL)
{
ase_lsp_unlockobj (mem->lsp, p);
ase_lsp_unlockobj (mem->lsp, n);
return -1;
}
ase_lsp_unlockobj (mem->lsp, p);
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ase_lsp_unlockobj (mem->lsp, n);
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return 0;
}
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ase_lsp_obj_t* ase_lsp_prim_exit (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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lsp->errnum = ASE_LSP_EEXIT;
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return ASE_NULL;
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}
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ase_lsp_obj_t* ase_lsp_prim_eval (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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ase_lsp_obj_t* tmp1, * tmp2;
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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tmp1 = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (tmp1 == ASE_NULL) return ASE_NULL;
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ase_lsp_lockobj (lsp, tmp1);
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tmp2 = ase_lsp_eval (lsp, tmp1);
if (tmp2 == ASE_NULL)
{
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ase_lsp_unlockobj (lsp, tmp1);
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return ASE_NULL;
}
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ase_lsp_unlockobj (lsp, tmp1);
return tmp2;
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}
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ase_lsp_obj_t* ase_lsp_prim_gc (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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ase_lsp_collectgarbage (lsp->mem);
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return lsp->mem->nil;
}
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ase_lsp_obj_t* ase_lsp_prim_cond (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
/*
* (cond
* (condition1 result1)
* (consition2 result2)
* ...
* (t resultN))
*/
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ase_lsp_obj_t* tmp, * ret;
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while (ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS)
{
if (ASE_LSP_TYPE(ASE_LSP_CAR(args)) != ASE_LSP_OBJ_CONS)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
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tmp = ase_lsp_eval (lsp, ASE_LSP_CAR(ASE_LSP_CAR(args)));
if (tmp == ASE_NULL) return ASE_NULL;
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if (tmp != lsp->mem->nil)
{
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tmp = ASE_LSP_CDR(ASE_LSP_CAR(args));
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ret = lsp->mem->nil;
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while (ASE_LSP_TYPE(tmp) == ASE_LSP_OBJ_CONS)
{
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ret = ase_lsp_eval (lsp, ASE_LSP_CAR(tmp));
if (ret == ASE_NULL) return ASE_NULL;
tmp = ASE_LSP_CDR(tmp);
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}
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if (tmp != lsp->mem->nil)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
return ret;
}
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args = ASE_LSP_CDR(args);
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}
return lsp->mem->nil;
}
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ase_lsp_obj_t* ase_lsp_prim_if (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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ase_lsp_obj_t* tmp;
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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tmp = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (tmp == ASE_NULL) return ASE_NULL;
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if (tmp != lsp->mem->nil)
{
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tmp = ase_lsp_eval (lsp, ASE_LSP_CAR(ASE_LSP_CDR(args)));
if (tmp == ASE_NULL) return ASE_NULL;
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return tmp;
}
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else
{
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ase_lsp_obj_t* res = lsp->mem->nil;
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tmp = ASE_LSP_CDR(ASE_LSP_CDR(args));
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while (ASE_LSP_TYPE(tmp) == ASE_LSP_OBJ_CONS)
{
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res = ase_lsp_eval (lsp, ASE_LSP_CAR(tmp));
if (res == ASE_NULL) return ASE_NULL;
tmp = ASE_LSP_CDR(tmp);
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}
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if (tmp != lsp->mem->nil)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
return res;
}
}
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ase_lsp_obj_t* ase_lsp_prim_while (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
/*
* (setq a 1)
* (while (< a 100) (setq a (+ a 1)))
*/
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ase_lsp_obj_t* tmp;
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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while (1)
{
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tmp = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (tmp == ASE_NULL) return ASE_NULL;
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if (tmp == lsp->mem->nil) break;
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tmp = ASE_LSP_CDR(args);
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while (ASE_LSP_TYPE(tmp) == ASE_LSP_OBJ_CONS)
{
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if (ase_lsp_eval(lsp, ASE_LSP_CAR(tmp)) == ASE_NULL)
return ASE_NULL;
tmp = ASE_LSP_CDR(tmp);
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}
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if (tmp != lsp->mem->nil)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
}
return lsp->mem->nil;
}
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ase_lsp_obj_t* ase_lsp_prim_car (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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/*
* (car '(10 20 30))
*/
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ase_lsp_obj_t* tmp;
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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tmp = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (tmp == ASE_NULL) return ASE_NULL;
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if (tmp == lsp->mem->nil) return lsp->mem->nil;
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if (ASE_LSP_TYPE(tmp) != ASE_LSP_OBJ_CONS)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
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return ASE_LSP_CAR(tmp);
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}
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ase_lsp_obj_t* ase_lsp_prim_cdr (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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/*
* (cdr '(10 20 30))
*/
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ase_lsp_obj_t* tmp;
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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tmp = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (tmp == ASE_NULL) return ASE_NULL;
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if (tmp == lsp->mem->nil) return lsp->mem->nil;
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if (ASE_LSP_TYPE(tmp) != ASE_LSP_OBJ_CONS)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
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return ASE_LSP_CDR(tmp);
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}
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ase_lsp_obj_t* ase_lsp_prim_cons (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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/*
* (cons 10 20)
* (cons '(10 20) 30)
*/
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ase_lsp_obj_t* car, * cdr, * cons;
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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car = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (car == ASE_NULL) return ASE_NULL;
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cdr = ase_lsp_eval (lsp, ASE_LSP_CAR(ASE_LSP_CDR(args)));
if (cdr == ASE_NULL) return ASE_NULL;
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cons = ase_lsp_makecons (lsp->mem, car, cdr);
if (cons == ASE_NULL)
{
lsp->errnum = ASE_LSP_ENOMEM;
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return ASE_NULL;
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}
return cons;
}
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ase_lsp_obj_t* ase_lsp_prim_set (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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/*
* (set 'flowers 'rose)
* (set flowers 20)
* (rose)
*/
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ase_lsp_obj_t* p1, * p2;
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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p1 = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (p1 == ASE_NULL) return ASE_NULL;
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if (ASE_LSP_TYPE(p1) != ASE_LSP_OBJ_SYM)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
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p2 = ase_lsp_eval (lsp, ASE_LSP_CAR(ASE_LSP_CDR(args)));
if (p2 == ASE_NULL) return ASE_NULL;
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if (ase_lsp_setvalue (lsp->mem, p1, p2) == ASE_NULL)
{
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lsp->errnum = ASE_LSP_ENOMEM;
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return ASE_NULL;
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}
return p2;
}
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ase_lsp_obj_t* ase_lsp_prim_setq (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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/*
* (setq x 10)
* (setq x "stirng")
*/
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ase_lsp_obj_t* p = args, * p1, * p2 = lsp->mem->nil;
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while (p != lsp->mem->nil)
{
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(p) == ASE_LSP_OBJ_CONS);
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p1 = ASE_LSP_CAR(p);
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if (ASE_LSP_TYPE(p1) != ASE_LSP_OBJ_SYM)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
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if (ASE_LSP_TYPE(ASE_LSP_CDR(p)) != ASE_LSP_OBJ_CONS)
{
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lsp->errnum = ASE_LSP_EARGFEW;
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return ASE_NULL;
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}
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p2 = ase_lsp_eval (lsp, ASE_LSP_CAR(ASE_LSP_CDR(p)));
if (p2 == ASE_NULL) return ASE_NULL;
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if (ase_lsp_setvalue (lsp->mem, p1, p2) == ASE_NULL)
{
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lsp->errnum = ASE_LSP_ENOMEM;
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return ASE_NULL;
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}
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p = ASE_LSP_CDR(ASE_LSP_CDR(p));
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}
return p2;
}
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ase_lsp_obj_t* ase_lsp_prim_quote (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
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/*
* (quote (10 20 30 50))
*/
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ASE_LSP_ASSERT (lsp, ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS);
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return ASE_LSP_CAR(args);
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}
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ase_lsp_obj_t* ase_lsp_prim_defun (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
/*
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* (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
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*/
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ase_lsp_obj_t* name, * fun;
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name = ASE_LSP_CAR(args);
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if (ASE_LSP_TYPE(name) != ASE_LSP_OBJ_SYM)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
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fun = ase_lsp_makefunc (lsp->mem,
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ASE_LSP_CAR(ASE_LSP_CDR(args)), ASE_LSP_CDR(ASE_LSP_CDR(args)));
if (fun == ASE_NULL) return ASE_NULL;
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if (ase_lsp_setfunc (lsp->mem, ASE_LSP_CAR(args), fun) == ASE_NULL)
{
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lsp->errnum = ASE_LSP_ENOMEM;
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return ASE_NULL;
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}
return fun;
}
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ase_lsp_obj_t* ase_lsp_prim_demac (ase_lsp_t* lsp, ase_lsp_obj_t* args)
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{
/*
* (demac x (abc) x y z)
*(setq x (macro (abc) x y z))
*/
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ase_lsp_obj_t* name, * mac;
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name = ASE_LSP_CAR(args);
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if (ASE_LSP_TYPE(name) != ASE_LSP_OBJ_SYM)
{
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lsp->errnum = ASE_LSP_EARGBAD;
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return ASE_NULL;
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}
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mac = ase_lsp_makemacro (lsp->mem,
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ASE_LSP_CAR(ASE_LSP_CDR(args)), ASE_LSP_CDR(ASE_LSP_CDR(args)));
if (mac == ASE_NULL) return ASE_NULL;
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if (ase_lsp_setfunc (lsp->mem, ASE_LSP_CAR(args), mac) == ASE_NULL)
{
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lsp->errnum = ASE_LSP_ENOMEM;
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return ASE_NULL;
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}
return mac;
}
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ase_lsp_obj_t* ase_lsp_prim_or (ase_lsp_t* lsp, ase_lsp_obj_t* args)
{
/*
* (or 10 20 30 40)
* (or (= n 20) (= n 30))
*/
ase_lsp_obj_t* tmp;
/* TODO: this is wrong. redo the work */
while (ASE_LSP_TYPE(args) == ASE_LSP_OBJ_CONS)
{
tmp = ase_lsp_eval (lsp, ASE_LSP_CAR(args));
if (tmp == ASE_NULL) return ASE_NULL;
if (ASE_LSP_TYPE(args) == ASE_LSP_OBJ_INT)
if (tmp != lsp->mem->nil) return lsp->mem->t;
args = ASE_LSP_CDR(args);
}
return lsp->mem->nil;
}