https://github.com/JuliaLang/julia
Tip revision: 41013b18bd2499880ef6b429ababf1c765ab0484 authored by Morten Piibeleht on 20 February 2021, 00:54:07 UTC
Don't print key
Don't print key
Tip revision: 41013b1
builtins.c
/*
Extra femtoLisp builtin functions
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include <assert.h>
#include <ctype.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include "flisp.h"
#if !defined(_OS_WINDOWS_)
#include <sys/time.h>
#endif /* !_OS_WINDOWS_ */
#ifdef __cplusplus
extern "C" {
#endif
size_t llength(value_t v)
{
size_t n = 0;
while (iscons(v)) {
n++;
v = cdr_(v);
}
return n;
}
static value_t fl_nconc(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
if (nargs == 0)
return fl_ctx->NIL;
value_t lst, first=fl_ctx->NIL;
value_t *pcdr = &first;
cons_t *c;
uint32_t i=0;
while (1) {
lst = args[i++];
if (i >= nargs) break;
if (iscons(lst)) {
*pcdr = lst;
c = (cons_t*)ptr(lst);
while (iscons(c->cdr))
c = (cons_t*)ptr(c->cdr);
pcdr = &c->cdr;
}
else if (lst != fl_ctx->NIL) {
type_error(fl_ctx, "nconc", "cons", lst);
}
}
*pcdr = lst;
return first;
}
static value_t fl_assq(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "assq", nargs, 2);
value_t item = args[0];
value_t v = args[1];
value_t bind;
while (iscons(v)) {
bind = car_(v);
if (iscons(bind) && car_(bind) == item)
return bind;
v = cdr_(v);
}
return fl_ctx->F;
}
static value_t fl_memq(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "memq", nargs, 2);
while (iscons(args[1])) {
cons_t *c = (cons_t*)ptr(args[1]);
if (c->car == args[0])
return args[1];
args[1] = c->cdr;
}
return fl_ctx->F;
}
static value_t fl_length(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "length", nargs, 1);
value_t a = args[0];
cvalue_t *cv;
if (isvector(a)) {
return fixnum(vector_size(a));
}
else if (iscprim(a)) {
cv = (cvalue_t*)ptr(a);
if (cp_class(cv) == fl_ctx->bytetype)
return fixnum(1);
else if (cp_class(cv) == fl_ctx->wchartype)
return fixnum(u8_charlen(*(uint32_t*)cp_data((cprim_t*)cv)));
}
else if (iscvalue(a)) {
cv = (cvalue_t*)ptr(a);
if (cv_class(cv)->eltype != NULL)
return size_wrap(fl_ctx, cvalue_arraylen(a));
}
else if (a == fl_ctx->NIL) {
return fixnum(0);
}
else if (iscons(a)) {
return fixnum(llength(a));
}
type_error(fl_ctx, "length", "sequence", a);
}
static value_t fl_f_raise(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "raise", nargs, 1);
fl_raise(fl_ctx, args[0]);
}
static value_t fl_exit(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
if (nargs > 0)
exit(tofixnum(fl_ctx, args[0], "exit"));
exit(0);
return fl_ctx->NIL;
}
static value_t fl_symbol(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "symbol", nargs, 1);
if (!fl_isstring(fl_ctx, args[0]))
type_error(fl_ctx, "symbol", "string", args[0]);
return symbol(fl_ctx, (char*)cvalue_data(args[0]));
}
static value_t fl_keywordp(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "keyword?", nargs, 1);
return (issymbol(args[0]) &&
iskeyword((symbol_t*)ptr(args[0]))) ? fl_ctx->T : fl_ctx->F;
}
static value_t fl_top_level_value(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "top-level-value", nargs, 1);
symbol_t *sym = tosymbol(fl_ctx, args[0], "top-level-value");
if (sym->binding == UNBOUND)
fl_raise(fl_ctx, fl_list2(fl_ctx, fl_ctx->UnboundError, args[0]));
return sym->binding;
}
static value_t fl_set_top_level_value(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "set-top-level-value!", nargs, 2);
symbol_t *sym = tosymbol(fl_ctx, args[0], "set-top-level-value!");
if (!isconstant(sym))
sym->binding = args[1];
return args[1];
}
static void global_env_list(fl_context_t *fl_ctx, symbol_t *root, value_t *pv)
{
while (root != NULL) {
if (root->name[0] != ':' && (root->binding != UNBOUND)) {
*pv = fl_cons(fl_ctx, tagptr(root,TAG_SYM), *pv);
}
global_env_list(fl_ctx, root->left, pv);
root = root->right;
}
}
value_t fl_global_env(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
(void)args;
argcount(fl_ctx, "environment", nargs, 0);
value_t lst = fl_ctx->NIL;
fl_gc_handle(fl_ctx, &lst);
global_env_list(fl_ctx, fl_ctx->symtab, &lst);
fl_free_gc_handles(fl_ctx, 1);
return lst;
}
static value_t fl_constantp(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "constant?", nargs, 1);
if (issymbol(args[0]))
return (isconstant((symbol_t*)ptr(args[0])) ? fl_ctx->T : fl_ctx->F);
if (iscons(args[0])) {
if (car_(args[0]) == fl_ctx->QUOTE)
return fl_ctx->T;
return fl_ctx->F;
}
return fl_ctx->T;
}
static value_t fl_integer_valuedp(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "integer-valued?", nargs, 1);
value_t v = args[0];
if (isfixnum(v)) {
return fl_ctx->T;
}
else if (iscprim(v)) {
numerictype_t nt = cp_numtype((cprim_t*)ptr(v));
if (nt < T_FLOAT)
return fl_ctx->T;
void *data = cp_data((cprim_t*)ptr(v));
if (nt == T_FLOAT) {
float f = *(float*)data;
if (f < 0) f = -f;
if (f <= FLT_MAXINT && (float)(int32_t)f == f)
return fl_ctx->T;
}
else {
assert(nt == T_DOUBLE);
double d = *(double*)data;
if (d < 0) d = -d;
if (d <= DBL_MAXINT && (double)(int64_t)d == d)
return fl_ctx->T;
}
}
return fl_ctx->F;
}
static value_t fl_integerp(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "integer?", nargs, 1);
value_t v = args[0];
return (isfixnum(v) ||
(iscprim(v) && cp_numtype((cprim_t*)ptr(v)) < T_FLOAT)) ?
fl_ctx->T : fl_ctx->F;
}
static value_t fl_fixnum(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "fixnum", nargs, 1);
if (isfixnum(args[0])) {
return args[0];
}
else if (iscprim(args[0])) {
cprim_t *cp = (cprim_t*)ptr(args[0]);
return fixnum(conv_to_ptrdiff(cp_data(cp), cp_numtype(cp)));
}
type_error(fl_ctx, "fixnum", "number", args[0]);
}
static value_t fl_truncate(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "truncate", nargs, 1);
if (isfixnum(args[0]))
return args[0];
if (iscprim(args[0])) {
cprim_t *cp = (cprim_t*)ptr(args[0]);
void *data = cp_data(cp);
numerictype_t nt = cp_numtype(cp);
double d;
if (nt == T_FLOAT)
d = (double)*(float*)data;
else if (nt == T_DOUBLE)
d = *(double*)data;
else
return args[0];
if (d > 0) {
if (d > (double)U64_MAX)
return args[0];
return return_from_uint64(fl_ctx, (uint64_t)d);
}
if (d > (double)S64_MAX || d < (double)S64_MIN)
return args[0];
return return_from_int64(fl_ctx, (int64_t)d);
}
type_error(fl_ctx, "truncate", "number", args[0]);
}
static value_t fl_vector_alloc(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
fixnum_t i;
value_t f, v;
if (nargs == 0)
lerror(fl_ctx, fl_ctx->ArgError, "vector.alloc: too few arguments");
i = (fixnum_t)tosize(fl_ctx, args[0], "vector.alloc");
if (i < 0)
lerror(fl_ctx, fl_ctx->ArgError, "vector.alloc: invalid size");
if (nargs == 2)
f = args[1];
else
f = FL_UNSPECIFIED(fl_ctx);
v = alloc_vector(fl_ctx, (unsigned)i, f==FL_UNSPECIFIED(fl_ctx));
if (f != FL_UNSPECIFIED(fl_ctx)) {
int k;
for(k=0; k < i; k++)
vector_elt(v,k) = f;
}
return v;
}
static value_t fl_time_now(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "time.now", nargs, 0);
(void)args;
return mk_double(fl_ctx, jl_clock_now());
}
static value_t fl_path_cwd(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
int err;
if (nargs > 1)
argcount(fl_ctx, "path.cwd", nargs, 1);
if (nargs == 0) {
char buf[1024];
size_t len = sizeof(buf);
err = uv_cwd(buf, &len);
if (err != 0)
lerrorf(fl_ctx, fl_ctx->IOError, "path.cwd: could not get cwd: %s", uv_strerror(err));
return string_from_cstrn(fl_ctx, buf, len);
}
char *ptr = tostring(fl_ctx, args[0], "path.cwd");
err = uv_chdir(ptr);
if (err != 0)
lerrorf(fl_ctx, fl_ctx->IOError, "path.cwd: could not cd to %s: %s", ptr, uv_strerror(err));
return fl_ctx->T;
}
static value_t fl_path_exists(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "path.exists?", nargs, 1);
char *str = tostring(fl_ctx, args[0], "path.exists?");
struct stat sbuf;
if (stat(str, &sbuf) == -1)
return fl_ctx->F;
return fl_ctx->T;
}
static value_t fl_os_getenv(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "os.getenv", nargs, 1);
char *name = tostring(fl_ctx, args[0], "os.getenv");
char *val = getenv(name);
if (val == NULL) return fl_ctx->F;
if (*val == 0)
return symbol_value(fl_ctx->emptystringsym);
return cvalue_static_cstring(fl_ctx, val);
}
static value_t fl_os_setenv(fl_context_t *fl_ctx, value_t *args, uint32_t nargs)
{
argcount(fl_ctx, "os.setenv", nargs, 2);
char *name = tostring(fl_ctx, args[0], "os.setenv");
int result;
if (args[1] == fl_ctx->F) {
#ifdef _OS_LINUX_
result = unsetenv(name);
#elif defined(_OS_WINDOWS_)
result = SetEnvironmentVariable(name,NULL);
#else
(void)unsetenv(name);
result = 0;
#endif
}
else {
char *val = tostring(fl_ctx, args[1], "os.setenv");
#if defined (_OS_WINDOWS_)
result = SetEnvironmentVariable(name,val);
#else
result = setenv(name, val, 1);
#endif
}
if (result != 0)
lerror(fl_ctx, fl_ctx->ArgError, "os.setenv: invalid environment variable");
return fl_ctx->T;
}
extern void stringfuncs_init(fl_context_t *fl_ctx);
extern void table_init(fl_context_t *fl_ctx);
extern void iostream_init(fl_context_t *fl_ctx);
static const builtinspec_t builtin_info[] = {
{ "environment", fl_global_env },
{ "constant?", fl_constantp },
{ "top-level-value", fl_top_level_value },
{ "set-top-level-value!", fl_set_top_level_value },
{ "raise", fl_f_raise },
{ "exit", fl_exit },
{ "symbol", fl_symbol },
{ "keyword?", fl_keywordp },
{ "fixnum", fl_fixnum },
{ "truncate", fl_truncate },
{ "integer?", fl_integerp },
{ "integer-valued?", fl_integer_valuedp },
{ "nconc", fl_nconc },
{ "append!", fl_nconc },
{ "assq", fl_assq },
{ "memq", fl_memq },
{ "length", fl_length },
{ "vector.alloc", fl_vector_alloc },
{ "time.now", fl_time_now },
{ "path.cwd", fl_path_cwd },
{ "path.exists?", fl_path_exists },
{ "os.getenv", fl_os_getenv },
{ "os.setenv", fl_os_setenv },
{ NULL, NULL }
};
void builtins_init(fl_context_t *fl_ctx)
{
assign_global_builtins(fl_ctx, builtin_info);
stringfuncs_init(fl_ctx);
table_init(fl_ctx);
iostream_init(fl_ctx);
}
#ifdef __cplusplus
}
#endif