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#include <time.h>
#include "lib.h"
#include "state.h"
#include "val.h"
#include "util.h"
static Val fn_clock(State *S, int nargs, Val *args) {
return VAL_NUM((double)clock() / CLOCKS_PER_SEC);
}
static Val fn_write(State *S, int nargs, Val *args) {
CHECK(nargs>0, "need 1 arg to write");
print_val(args[0]);
return VAL_NIL;
}
static Val fn_say(State *S, int nargs, Val *args) {
CHECK(nargs>0, "need 1 arg to say");
println_val(args[0]);
return VAL_NIL;
}
// lists
static Val fn_arr(State *S, int nargs, Val *args) {
CHECK(nargs == 0, "need 0 args to arr");
ObjArr *o = objarr_new(S);
return VAL_OBJ(o);
}
static Val fn_append(State *S, int nargs, Val *args) {
CHECK(nargs == 2, "need 2 args to append");
CHECK(IS_ARR(args[0]), "can only append to arr");
ObjArr *a = AS_ARR(args[0]);
objarr_append(S, a, args[1]);
return args[0];
}
static Val fn_len(State *S, int nargs, Val *args) {
CHECK(nargs == 1, "need 1 arg to len");
CHECK(IS_ARR(args[0]), "can only take length of arr");
ObjArr *a = AS_ARR(args[0]);
return VAL_NUM(a->len);
}
typedef struct {
char *name;
CFunc func;
} BuiltinFunc;
static BuiltinFunc builtin_funcs[] = {
{ "clock", fn_clock },
{ "say", fn_say },
{ "write", fn_write },
{ "arr", fn_arr },
{ "append", fn_append },
{ "len", fn_len },
{ 0 },
};
void load_stdlib(State *S) {
for (BuiltinFunc *b = builtin_funcs; b->name != NULL; b++) {
ObjString *oname = objstring_copy_cstr(S, b->name);
ht_put(S, &S->globals, oname, VAL_CFUNC(b->func));
}
}
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