Cosmo/src/cbaselib.c

987 lines
28 KiB
C

#include "cbaselib.h"
#include "cvm.h"
#include "cvalue.h"
#include "cobj.h"
#include "cmem.h"
#include <math.h>
#include <sys/time.h>
// ================================================================ [BASELIB] ================================================================
int cosmoB_print(CState *state, int nargs, CValue *args) {
for (int i = 0; i < nargs; i++) {
if (IS_REF(args[i])) { // if its a CObj*, generate the CObjString
CObjString *str = cosmoV_toString(state, args[i]);
printf("%s", cosmoO_readCString(str));
} else { // else, thats pretty expensive for primitives, just print the raw value
printValue(args[i]);
}
}
printf("\n");
return 0; // print doesn't return any args
}
int cosmoB_assert(CState *state, int nargs, CValue *args) {
if (nargs < 1 || nargs > 2) {
cosmoV_error(state, "assert() expected 1 or 2 arguments, got %d!", nargs);
return 0; // nothing pushed onto the stack to return
}
if (!IS_BOOLEAN(args[0]) || (nargs == 2 && !IS_STRING(args[1]))) {
if (nargs == 2) {
cosmoV_typeError(state, "assert()", "<boolean>, <string>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
} else {
cosmoV_typeError(state, "assert()", "<boolean>", "%s", cosmoV_typeStr(args[0]));
}
return 0;
}
if (!cosmoV_readBoolean(args[0])) // expression passed was false, error!
cosmoV_error(state, "%s", nargs == 2 ? cosmoV_readCString(args[1]) : "assert() failed!");
return 0;
}
int cosmoB_type(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "type() expected 1 argument, got %d!", nargs);
return 0;
}
// push the type string to the stack
cosmoV_pushString(state, cosmoV_typeStr(args[0]));
return 1; // 1 return value, the type string :D
}
int cosmoB_pcall(CState *state, int nargs, CValue *args) {
if (nargs < 1) {
cosmoV_error(state, "pcall() expected at least 1 argument!");
return 0;
}
// unfreeze the state GC before calling the function
cosmoM_unfreezeGC(state);
// call the passed callable
COSMOVMRESULT res = cosmoV_pcall(state, nargs-1, 1);
// insert false before the result
cosmo_insert(state, 0, cosmoV_newBoolean(res == COSMOVM_OK));
// refreeze the state GC so it can be properly unfrozen
cosmoM_freezeGC(state);
return 2;
}
int cosmoB_tonumber(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "tonumber() expected 1 argument, got %d!", nargs);
return 0;
}
cosmoV_pushNumber(state, cosmoV_toNumber(state, args[0]));
return 1;
}
int cosmoB_tostring(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "tostring() expected 1 argument, got %d!", nargs);
return 0;
}
cosmoV_pushRef(state, (CObj*)cosmoV_toString(state, args[0]));
return 1;
}
int cosmoB_loadstring(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "loadstring() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_STRING(args[0])) {
cosmoV_typeError(state, "loadstring()", "<string>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
bool res = cosmoV_compileString(state, str->str, "");
cosmo_insert(state, 0, cosmoV_newBoolean(res));
return 2; // <boolean>, <closure> or <error>
}
int cosmoB_error(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "error() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_STRING(args[0])) {
cosmoV_typeError(state, "error()", "<string>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_error(state, "%s", cosmoV_readCString(args[0]));
return 0;
}
void cosmoB_loadLibrary(CState *state) {
const char *identifiers[] = {
"print",
"assert",
"type",
"pcall",
"tonumber",
"tostring",
"loadstring",
"error"
};
CosmoCFunction baseLib[] = {
cosmoB_print,
cosmoB_assert,
cosmoB_type,
cosmoB_pcall,
cosmoB_tonumber,
cosmoB_tostring,
cosmoB_loadstring,
cosmoB_error
};
int i;
for (i = 0; i < sizeof(identifiers)/sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, baseLib[i]);
}
// register all the pushed c functions and the strings as globals
cosmoV_register(state, i);
// load other libraries
cosmoB_loadObjLib(state);
cosmoB_loadStrLib(state);
cosmoB_loadMathLib(state);
}
// ================================================================ [OBJECT.*] ================================================================
int cosmoB_osetProto(CState *state, int nargs, CValue *args) {
if (nargs == 2) {
CObj *obj = cosmoV_readRef(args[0]); // object to set proto too
CObjObject *proto = cosmoV_readObject(args[1]);
obj->proto = proto; // boom done
} else {
cosmoV_error(state, "Expected 2 arguments, got %d!", nargs);
}
return 0; // nothing
}
int cosmoB_ogetProto(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "Expected 1 argument, got %d!", nargs);
return 0;
}
cosmoV_pushRef(state, (CObj*)cosmoV_readObject(args[0])->_obj.proto); // just return the proto
return 1; // 1 result
}
int cosmoB_oisChild(CState *state, int nargs, CValue *args) {
if (nargs != 2) {
cosmoV_error(state, "object.ischild() expected 2 arguments, got %d!", nargs);
return 0;
}
if (!IS_REF(args[0]) || !IS_OBJECT(args[1])) {
cosmoV_typeError(state, "object.ischild()", "<reference obj>, <object>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
CObj *obj = cosmoV_readRef(args[0]);
CObjObject *proto = cosmoV_readObject(args[1]);
// push result
cosmoV_pushBoolean(state, cosmoO_isDescendant(obj, proto));
return 1;
}
COSMO_API void cosmoB_loadObjLib(CState *state) {
const char *identifiers[] = {
"ischild"
};
CosmoCFunction objLib[] = {
cosmoB_oisChild
};
// make object library object
cosmoV_pushString(state, "object");
// make __getter object for debug proto
cosmoV_pushString(state, "__getter");
// key & value pair
cosmoV_pushString(state, "__proto"); // key
cosmoV_pushCFunction(state, cosmoB_ogetProto); // value
cosmoV_makeTable(state, 1);
// make __setter table
cosmoV_pushString(state, "__setter");
cosmoV_pushString(state, "__proto");
cosmoV_pushCFunction(state, cosmoB_osetProto);
cosmoV_makeTable(state, 1);
int i;
for (i = 0; i < sizeof(identifiers)/sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, objLib[i]);
}
// make the object and set the protoobject for all runtime-allocated objects
CObjObject *obj = cosmoV_makeObject(state, i + 2); // + 2 for the getter/setter tables
cosmoO_lock(obj); // lock so pesky people don't mess with it (feel free to remove if debugging)
cosmoV_registerProtoObject(state, COBJ_OBJECT, obj);
// register "object" to the global table
cosmoV_register(state, 1);
}
// ================================================================ [OS.*] ================================================================
// os.read()
int cosmoB_osRead(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "os.read() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_STRING(args[0])) {
cosmoV_typeError(state, "os.read()", "<string>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
// open file
FILE *file = fopen(str->str, "rb");
char *buf;
size_t size, bRead;
if (file == NULL) {
// return nil, file doesn't exist
return 0;
}
// grab the size of the file
fseek(file, 0L, SEEK_END);
size = ftell(file);
rewind(file);
buf = cosmoM_xmalloc(state, size + 1); // +1 for the NULL terminator
bRead = fread(buf, sizeof(char), size, file); // read the file into the buffer
if (bRead < size) {
// an error occured! we don't need to really throw an error, returning a nil is good enough
return 0;
}
buf[bRead] = '\0'; // place the NULL terminator at the end of the buffer
// push the string to the stack to return
cosmoV_pushValue(state, cosmoV_newRef(cosmoO_takeString(state, buf, bRead)));
return 1;
}
// os.time()
int cosmoB_osTime(CState *state, int nargs, CValue *args) {
struct timeval time;
if (nargs > 0) {
cosmoV_error(state, "os.time() expected no arguments, got %d!", nargs);
return 0;
}
gettimeofday(&time, NULL);
cosmoV_pushNumber(state, (time.tv_usec / 1000000.0) + time.tv_sec);
return 1;
}
// os.system()
int cosmoB_osSystem(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "os.system() expects 1 argument, got %d!", nargs);
return 0;
}
if (!IS_STRING(args[0])) {
cosmoV_typeError(state, "os.system()", "<string>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
// run the command and return the exit code
cosmoV_pushNumber(state, system(cosmoV_readCString(args[0])));
return 1;
}
COSMO_API void cosmoB_loadOSLib(CState *state) {
const char *identifiers[] = {
"read",
"time",
"system"
};
CosmoCFunction osLib[] = {
cosmoB_osRead,
cosmoB_osTime,
cosmoB_osSystem
};
cosmoV_pushString(state, "os");
int i;
for (i = 0; i < sizeof(identifiers)/sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, osLib[i]);
}
cosmoV_makeObject(state, i);
cosmoV_register(state, 1); // register the os.* object to the global table
}
// ================================================================ [STRING.*] ================================================================
// string.sub
int cosmoB_sSub(CState *state, int nargs, CValue *args) {
if (nargs == 2) {
if (!IS_STRING(args[0]) || !IS_NUMBER(args[1])) {
cosmoV_typeError(state, "string.sub()", "<string>, <number>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
cosmo_Number indx = cosmoV_readNumber(args[1]);
// make sure we stay within memory
if (indx < 0 || indx >= str->length) {
cosmoV_error(state, "string.sub() expected index to be 0-%d, got %d!", str->length - 1, indx);
return 0;
}
cosmoV_pushLString(state, str->str + ((int)indx), str->length - ((int)indx));
} else if (nargs == 3) {
if (!IS_STRING(args[0]) || !IS_NUMBER(args[1]) || !IS_NUMBER(args[2])) {
cosmoV_typeError(state, "string.sub()", "<string>, <number>, <number>", "%s, %s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]), cosmoV_typeStr(args[2]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
cosmo_Number indx = cosmoV_readNumber(args[1]);
cosmo_Number length = cosmoV_readNumber(args[2]);
// make sure we stay within memory
if (indx + length < 0 || indx + length >= str->length || indx < 0 || indx >= str->length) {
cosmoV_error(state, "string.sub() expected subbed string goes out of bounds, max length is %d!", str->length);
return 0;
}
cosmoV_pushLString(state, str->str + ((int)indx), ((int)length));
} else {
cosmoV_error(state, "string.sub() expected 2 or 3 arguments, got %d!", nargs);
return 0;
}
return 1;
}
// string.find
int cosmoB_sFind(CState *state, int nargs, CValue *args) {
if (nargs == 2) {
if (!IS_STRING(args[0]) || !IS_STRING(args[1])) {
cosmoV_typeError(state, "string.find()", "<string>, <string>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
CObjString *ptrn = cosmoV_readString(args[1]);
char *indx = strstr(str->str, ptrn->str);
// failed, return the error index -1
if (indx == NULL) {
cosmoV_pushNumber(state, -1);
return 1;
}
// success! push the index
cosmoV_pushNumber(state, indx - str->str);
} else if (nargs == 3) {
if (!IS_STRING(args[0]) || !IS_STRING(args[1]) || !IS_NUMBER(args[2])) {
cosmoV_typeError(state, "string.find()", "<string>, <string>, <number>", "%s, %s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]), cosmoV_typeStr(args[2]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
CObjString *ptrn = cosmoV_readString(args[1]);
int startIndx = (int)cosmoV_readNumber(args[2]);
char *indx = strstr(str->str + startIndx, ptrn->str);
// failed, return the error index -1
if (indx == NULL) {
cosmoV_pushNumber(state, -1);
return 1;
}
// success! push the index
cosmoV_pushNumber(state, indx - str->str);
} else {
cosmoV_error(state, "string.find() expected 2 or 3 arguments, got %d!", nargs);
return 0;
}
return 1;
}
// string.split
int cosmoB_sSplit(CState *state, int nargs, CValue *args) {
if (nargs != 2) {
cosmoV_error(state, "string.split() expected 2 arguments, got %d!", nargs);
return 0;
}
if (!IS_STRING(args[0]) || !IS_STRING(args[1])) {
cosmoV_typeError(state, "string.split()", "<string>, <string>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
CObjString *ptrn = cosmoV_readString(args[1]);
int nEntries = 0;
char *indx = str->str;
char *nIndx;
// while there are still patterns to match in the string, push the split strings onto the stack
do {
nIndx = strstr(indx, ptrn->str);
cosmoV_pushNumber(state, nEntries++);
cosmoV_pushLString(state, indx, nIndx == NULL ? str->length - (indx - str->str) : nIndx - indx);
indx = nIndx + ptrn->length;
} while (nIndx != NULL);
// finally, make a table out of the pushed entries
cosmoV_makeTable(state, nEntries);
return 1;
}
// string.byte
int cosmoB_sByte(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "string.byte() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_STRING(args[0])) {
cosmoV_typeError(state, "string.byte", "<string>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
if (str->length < 1) {
// the length of the string is less than 1, in the future I might throw an error for this, but
// for now im going to copy lua and just return a nil
return 0;
}
// push the character byte and return
cosmoV_pushNumber(state, (int)str->str[0]);
return 1;
}
// string.char
int cosmoB_sChar(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "string.char() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "string.char", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
// small side effect of truncating the number, but ignoring the decimal instead of throwing an error is the better option imo
int num = (int)cosmoV_readNumber(args[0]);
char c = num;
if (num > 255 || num < 0) {
cosmoV_error(state, "Character expected to be in range 0-255, got %d!", num);
return 0;
}
// basically, treat the character value on the C stack as an """"array"""" with a length of 1
cosmoV_pushLString(state, &c, 1);
return 1;
}
int cosmoB_sLen(CState *state, int nargs, CValue *args) {
if (nargs < 1) {
cosmoV_error(state, "string.len() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_STRING(args[0])) {
cosmoV_typeError(state, "string.len", "<string>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, strlen(cosmoV_readCString(args[0])));
return 1;
}
int cosmoB_sRep(CState *state, int nargs, CValue *args) {
if (nargs != 2) {
cosmoV_error(state, "string.rep() expected 2 arguments, got %d!", nargs);
return 0;
}
// expects <string>, <number>
if (!IS_STRING(args[0]) || !IS_NUMBER(args[1])) {
cosmoV_typeError(state, "string.rep", "<string>, <number>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
CObjString *str = cosmoV_readString(args[0]);
int times = (int)cosmoV_readNumber(args[1]);
if (times <= 0) {
cosmoV_error(state, "Expected times to be > 0, got %d!", times);
return 0;
}
// allocated the new buffer for the string
size_t length = str->length * times;
char *newStr = cosmoM_xmalloc(state, length + 1); // + 1 for the NULL terminator
// copy the string over the new buffer
for (int i = 0; i < times; i++)
memcpy(&newStr[i * str->length], str->str, str->length);
// write the NULL terminator
newStr[length] = '\0';
// finally, push the resulting string onto the stack
cosmoV_pushRef(state, (CObj*)cosmoO_takeString(state, newStr, length));
return 1;
}
void cosmoB_loadStrLib(CState *state) {
const char *identifiers[] = {
"sub",
"find",
"split",
"byte",
"char",
"len",
"rep"
};
CosmoCFunction strLib[] = {
cosmoB_sSub,
cosmoB_sFind,
cosmoB_sSplit,
cosmoB_sByte,
cosmoB_sChar,
cosmoB_sLen,
cosmoB_sRep
};
// make string library object
cosmoV_pushString(state, "string");
int i;
for (i = 0; i < sizeof(identifiers)/sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, strLib[i]);
}
// make the object and set the protoobject for all strings
CObjObject *obj = cosmoV_makeObject(state, i);
cosmoO_lock(obj); // lock so pesky people don't mess with it (feel free to remove if debugging)
cosmoV_registerProtoObject(state, COBJ_STRING, obj);
// register "string" to the global table
cosmoV_register(state, 1);
}
// ================================================================ [MATH] ================================================================
// math.abs
int cosmoB_mAbs(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.abs() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.abs", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, fabs(cosmoV_readNumber(args[0])));
return 1;
}
// math.floor
int cosmoB_mFloor(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.floor() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.floor", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, (int)cosmoV_readNumber(args[0]));
return 1;
}
// math.ceil
int cosmoB_mCeil(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.ceil() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.ceil", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
int roundedDown = (int)cosmoV_readNumber(args[0]);
// number is already truncated
if ((double)roundedDown == cosmoV_readNumber(args[0])) {
cosmoV_pushValue(state, args[0]);
} else {
cosmoV_pushNumber(state, roundedDown + 1);
}
return 1;
}
int cosmoB_mSin(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.sin() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.sin", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, sin(cosmoV_readNumber(args[0])));
return 1;
}
int cosmoB_mCos(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.cos() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.cos", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, cos(cosmoV_readNumber(args[0])));
return 1;
}
int cosmoB_mTan(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.tan() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.tan", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, tan(cosmoV_readNumber(args[0])));
return 1;
}
int cosmoB_mASin(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.asin() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.asin", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, asin(cosmoV_readNumber(args[0])));
return 1;
}
int cosmoB_mACos(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.acos() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.acos", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, acos(cosmoV_readNumber(args[0])));
return 1;
}
int cosmoB_mATan(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.atan() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.atan", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
cosmoV_pushNumber(state, atan(cosmoV_readNumber(args[0])));
return 1;
}
int cosmoB_mRad(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.rad() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.rad", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
// convert the degree to radians
cosmoV_pushNumber(state, cosmoV_readNumber(args[0]) * (acos(-1) / 180));
return 1;
}
int cosmoB_mDeg(CState *state, int nargs, CValue *args) {
if (nargs != 1) {
cosmoV_error(state, "math.deg() expected 1 argument, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[0])) {
cosmoV_typeError(state, "math.deg", "<number>", "%s", cosmoV_typeStr(args[0]));
return 0;
}
// convert the degree to radians
cosmoV_pushNumber(state, cosmoV_readNumber(args[0]) * (180 / acos(-1)));
return 1;
}
void cosmoB_loadMathLib(CState *state) {
const char *identifiers[] = {
"abs",
"floor",
"ceil",
"sin",
"cos",
"tan",
"asin",
"acos",
"atan",
"rad",
"deg"
};
CosmoCFunction mathLib[] = {
cosmoB_mAbs,
cosmoB_mFloor,
cosmoB_mCeil,
cosmoB_mSin,
cosmoB_mCos,
cosmoB_mTan,
cosmoB_mASin,
cosmoB_mACos,
cosmoB_mATan,
cosmoB_mRad,
cosmoB_mDeg
};
// make math library object
cosmoV_pushString(state, "math");
int i;
for (i = 0; i < sizeof(identifiers)/sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, mathLib[i]);
}
cosmoV_pushString(state, "pi");
cosmoV_pushNumber(state, acos(-1));
i++;
// make the object and register it as a global to the state
cosmoV_makeObject(state, i);
cosmoV_register(state, 1);
}
// ================================================================ [VM.*] ================================================================
// vm.__getter["globals"]
int cosmoB_vgetGlobal(CState *state, int nargs, CValue *args) {
// this function doesn't need to check anything, just return the global table
cosmoV_pushRef(state, (CObj*)state->globals);
return 1;
}
// vm.__setter["globals"]
int cosmoB_vsetGlobal(CState *state, int nargs, CValue *args) {
if (nargs != 2) {
cosmoV_error(state, "Expected 2 argumenst, got %d!", nargs);
return 0;
}
if (!IS_TABLE(args[1])) {
cosmoV_typeError(state, "vm.__setter[\"globals\"]", "<object>, <table>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
// this makes me very nervous ngl
CObjTable *tbl = (CObjTable*)cosmoV_readRef(args[1]);
state->globals = tbl;
return 0;
}
int cosmoB_vindexBProto(CState *state, int nargs, CValue *args) {
if (nargs != 2) {
cosmoV_error(state, "Expected 2 arguments, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[1])) {
cosmoV_typeError(state, "baseProtos.__index", "<object>, <number>", "%s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
int indx = (int)cosmoV_readNumber(args[1]);
if (indx >= COBJ_MAX || indx < 0) {
cosmoV_error(state, "index out of range! expected 0 - %d, got %d!", COBJ_MAX - 1, indx);
return 0;
}
if (state->protoObjects[indx] != NULL)
cosmoV_pushRef(state, (CObj*)state->protoObjects[indx]);
else
cosmoV_pushNil(state);
return 1; // 1 value pushed, 1 value returned
}
int cosmoB_vnewindexBProto(CState *state, int nargs, CValue *args) {
if (nargs != 3) {
cosmoV_error(state, "Expected 3 arguments, got %d!", nargs);
return 0;
}
if (!IS_NUMBER(args[1]) || !IS_OBJECT(args[2])) {
cosmoV_typeError(state, "baseProtos.__newindex", "<object>, <number>, <object>", "%s, %s, %s", cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]), cosmoV_typeStr(args[2]));
return 0;
}
int indx = (int)cosmoV_readNumber(args[1]);
CObjObject *proto = cosmoV_readObject(args[2]);
if (indx >= COBJ_MAX || indx < 0) {
cosmoV_error(state, "index out of range! expected 0 - %d, got %d!", COBJ_MAX, indx);
return 0;
}
cosmoV_registerProtoObject(state, indx, proto);
return 0; // we don't return anything
}
// vm.collect()
int cosmoB_vcollect(CState *state, int nargs, CValue *args) {
// first, unfreeze the state (we start frozen on entry to any C Function)
cosmoM_unfreezeGC(state);
// now force a garbage collection
cosmoM_collectGarbage(state);
// and re-freeze the state
cosmoM_freezeGC(state);
// the end!
return 0;
}
void cosmoB_loadVM(CState *state) {
// make vm.* object
cosmoV_pushString(state, "vm");
// make vm.baseProtos object
cosmoV_pushString(state, "baseProtos");
cosmoV_pushString(state, "__index");
cosmoV_pushCFunction(state, cosmoB_vindexBProto);
cosmoV_pushString(state, "__newindex");
cosmoV_pushCFunction(state, cosmoB_vnewindexBProto);
cosmoV_makeObject(state, 2); // makes the baseProtos object
// make __getter table for vm object
cosmoV_pushString(state, "__getter");
cosmoV_pushString(state, "globals");
cosmoV_pushCFunction(state, cosmoB_vgetGlobal);
cosmoV_makeTable(state, 1);
// make __setter table for vm object
cosmoV_pushString(state, "__setter");
cosmoV_pushString(state, "globals");
cosmoV_pushCFunction(state, cosmoB_vsetGlobal);
cosmoV_makeTable(state, 1);
cosmoV_pushString(state, "collect");
cosmoV_pushCFunction(state, cosmoB_vcollect);
cosmoV_makeObject(state, 4); // makes the vm object
// register "vm" to the global table
cosmoV_register(state, 1);
printf("[WARNING] the vm.* library has been loaded!\n");
}