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builtin_core.c
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builtin_core.c
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#include "builtin_core.h"
#include "cfunc.h"
#include "closure.h"
#include "cons.h"
#include "env.h"
#include "eval.h"
#include "gc.h"
#include "macro.h"
#include "number.h"
#include "object.h"
#include "print.h"
#include "symbol.h"
static pobject begin(pobject env, pobject params)
{
pobject result = NIL;
while (is_cons(params)) {
result = eval(env, cons_car(params));
params = cons_cdr(params);
}
return result;
}
static pobject cond(pobject env, pobject params)
{
while (is_cons(params)) {
pobject entry = cons_car(params);
if (is_cons(entry)) {
if (eval(env, cons_car(entry)))
return eval(env, object_prepend_begin( cons_cdr( entry ) ) );
} else {
return eval(env, entry);
}
params = cons_cdr(params);
}
return NIL;
}
static pobject equal(pobject env, pobject params)
{
pobject o1 = eval(env, cons_car(params));
pobject o2 = eval(env, cons_car(cons_cdr(params)));
return object_bool(object_equal(o1, o2));
}
static pobject gt(pobject env, pobject params)
{
pobject o1 = eval(env, cons_car(params));
pobject o2 = eval(env, cons_car(cons_cdr(params)));
return object_bool(is_number(o1)
&& is_number(o2)
&& number_value(o1) > number_value(o2));
}
static pobject quote(pobject env, pobject params)
{
return cons_car(params);
}
static pobject define(pobject env, pobject params)
{
pobject p = cons_car(params);
if (is_symbol(p)) {
return env_define(env,
cons_car(params),
eval(env, cons_car(cons_cdr(params))));
} else if (is_cons(p)) {
return env_define(env,
cons_car(p),
gc_add(closure_new(env, cons_cdr(p), cons_cdr(params))));
}
return NIL;
}
static pobject set(pobject env, pobject params)
{
pobject symbol = cons_car(params);
if (is_symbol(symbol)) {
pobject value = eval(env, cons_nth(params, 2));
pobject cons = env_lookup(env, symbol);
if (is_cons(cons)) {
cons_car_set(cons, value);
return value;
}
}
return NIL;
}
static pobject defmacro(pobject env, pobject params)
{
pobject p = cons_car(params);
if (is_cons(p)) {
return env_define(env,
cons_car(p),
gc_add(macro_new(env, cons_cdr(p), cons_cdr(params))));
}
return NIL;
}
static pobject builtin_macro_expand(pobject env, pobject params)
{
pobject p = cons_car(params);
if (is_cons(p)) {
pobject macro = eval(env, cons_car(p));
if (is_macro(macro))
return macro_expand(env, macro, cons_cdr(p));
}
return NIL;
}
static pobject lambda(pobject env, pobject params)
{
return gc_add(closure_new(env, cons_car(params), cons_cdr(params)));
}
static pobject macro(pobject env, pobject params)
{
return gc_add(macro_new(env, cons_car(params), cons_cdr(params)));
}
static pobject apply(pobject env, pobject params)
{
/* XXX: apply needs more work */
return eval_apply(env, eval(env, cons_car(params)),
eval(env, cons_nth(params, 2)));
}
static pobject car(pobject env, pobject params)
{
return cons_car(eval(env, cons_car(params)));
}
static pobject cdr(pobject env, pobject params)
{
return cons_cdr(eval(env, cons_car(params)));
}
static pobject cons(pobject env, pobject params)
{
pobject o1 = eval(env, cons_car(params));
pobject o2 = eval(env, cons_car(cons_cdr(params)));
return gc_add(cons_new(o1, o2));
}
static pobject builtin_print(pobject env, pobject params)
{
pobject o = eval(env, cons_car(params));
print(o);
return NIL;
}
static pobject builtin_println(pobject env, pobject params)
{
pobject o = eval(env, cons_car(params));
println(o);
return NIL;
}
static pobject collect(pobject env, pobject params)
{
gc_collect(env);
return NIL;
}
void builtin_core_init(pobject *env)
{
cons_assoc_set(env, symbol_intern("nil"), NIL, 1);
cons_assoc_set(env, symbol_intern("#t"), object_true, 1);
cons_assoc_set(env, symbol_intern("#f"), NIL, 1);
cons_assoc_set(env, symbol_intern("quote"), gc_add(cfunc_new(quote)), 1);
cons_assoc_set(env, symbol_intern("print"), gc_add(cfunc_new(builtin_print)), 1);
cons_assoc_set(env, symbol_intern("println"), gc_add(cfunc_new(builtin_println)), 1);
cons_assoc_set(env, symbol_intern("begin"), gc_add(cfunc_new(begin)), 1);
cons_assoc_set(env, symbol_intern("cond"), gc_add(cfunc_new(cond)), 1);
cons_assoc_set(env, symbol_intern("set!"), gc_add(cfunc_new(set)), 1);
cons_assoc_set(env, symbol_intern("define"), gc_add(cfunc_new(define)), 1);
cons_assoc_set(env, symbol_intern("defmacro"), gc_add(cfunc_new(defmacro)), 1);
cons_assoc_set(env, symbol_intern("macro-expand"), gc_add(cfunc_new(builtin_macro_expand)), 1);
cons_assoc_set(env, symbol_intern("lambda"), gc_add(cfunc_new(lambda)), 1);
cons_assoc_set(env, symbol_intern("macro"), gc_add(cfunc_new(macro)), 1);
cons_assoc_set(env, symbol_intern("apply"), gc_add(cfunc_new(apply)), 1);
cons_assoc_set(env, symbol_intern("car"), gc_add(cfunc_new(car)), 1);
cons_assoc_set(env, symbol_intern("cdr"), gc_add(cfunc_new(cdr)), 1);
cons_assoc_set(env, symbol_intern("cons"), gc_add(cfunc_new(cons)), 1);
cons_assoc_set(env, symbol_intern("collect"), gc_add(cfunc_new(collect)), 1);
cons_assoc_set(env, symbol_intern("="), gc_add(cfunc_new(equal)), 1);
cons_assoc_set(env, symbol_intern(">"), gc_add(cfunc_new(gt)), 1);
}