CPunch
/
Cosmo
mirror of https://github.com/CPunch/Cosmo.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

added clang-format

This commit is contained in:
CPunch 2023-02-09 12:32:48 -06:00 committed by cpunch
parent 88284a0b6e
commit 6056f8eb5b
25 changed files with 2894 additions and 2301 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
.clang-format Normal file
View File

@ -0,0 +1,26 @@
---
Language: Cpp
# BasedOnStyle: Mozilla
AccessModifierOffset: -2
AlignAfterOpenBracket: Align
AlignArrayOfStructures: Right
AlignConsecutiveMacros: AcrossEmptyLinesAndComments
AlignConsecutiveAssignments: None
AlignConsecutiveBitFields: None
AlignConsecutiveDeclarations: None
AlignEscapedNewlines: Right
AlignOperands: Align
AlignTrailingComments: true
AllowAllArgumentsOnNextLine: true
AllowShortEnumsOnASingleLine: false
AllowShortFunctionsOnASingleLine: None
AllowShortBlocksOnASingleLine: Never
AllowShortIfStatementsOnASingleLine: Never
AlwaysBreakAfterReturnType: None
BreakBeforeBraces: Mozilla
IndentWidth: 4
ColumnLimit: 100
IncludeBlocks: Regroup
IndentPPDirectives: AfterHash
...

2
examples/stress.cosmo
View File

@ -9,7 +9,7 @@ proto Test
end
// stressing the GC
for (var i = 0; ; i++) do
for (var i = 0; i < 100000; i++) do
var x = Test("Hello world " .. i)
x:print()
end

327
src/cbaselib.c
View File

@ -1,15 +1,18 @@
#include "cbaselib.h"
#include "cvm.h"
#include "cvalue.h"
#include "cobj.h"
#include "cmem.h"
#include "cobj.h"
#include "cvalue.h"
#include "cvm.h"
#include <math.h>
#include <sys/time.h>
// ================================================================ [BASELIB] ================================================================
// ================================================================ [BASELIB]
// ================================================================
int cosmoB_print(CState *state, int nargs, CValue *args) {
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]);
@ -23,7 +26,8 @@ int cosmoB_print(CState *state, int nargs, CValue *args) {
return 0; // print doesn't return any args
}
int cosmoB_assert(CState *state, int nargs, CValue *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
@ -31,7 +35,8 @@ int cosmoB_assert(CState *state, int nargs, CValue *args) {
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]));
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]));
}
@ -44,7 +49,8 @@ int cosmoB_assert(CState *state, int nargs, CValue *args) {
return 0;
}
int cosmoB_type(CState *state, int nargs, CValue *args) {
int cosmoB_type(CState *state, int nargs, CValue *args)
{
if (nargs != 1) {
cosmoV_error(state, "type() expected 1 argument, got %d!", nargs);
return 0;
@ -55,7 +61,8 @@ int cosmoB_type(CState *state, int nargs, CValue *args) {
return 1; // 1 return value, the type string :D
}
int cosmoB_pcall(CState *state, int nargs, CValue *args) {
int cosmoB_pcall(CState *state, int nargs, CValue *args)
{
if (nargs < 1) {
cosmoV_error(state, "pcall() expected at least 1 argument!");
return 0;
@ -65,7 +72,7 @@ int cosmoB_pcall(CState *state, int nargs, CValue *args) {
cosmoM_unfreezeGC(state);
// call the passed callable
COSMOVMRESULT res = cosmoV_pcall(state, nargs-1, 1);
COSMOVMRESULT res = cosmoV_pcall(state, nargs - 1, 1);
// insert false before the result
cosmo_insert(state, 0, cosmoV_newBoolean(res == COSMOVM_OK));
@ -75,7 +82,8 @@ int cosmoB_pcall(CState *state, int nargs, CValue *args) {
return 2;
}
int cosmoB_tonumber(CState *state, int nargs, CValue *args) {
int cosmoB_tonumber(CState *state, int nargs, CValue *args)
{
if (nargs != 1) {
cosmoV_error(state, "tonumber() expected 1 argument, got %d!", nargs);
return 0;
@ -85,17 +93,19 @@ int cosmoB_tonumber(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_tostring(CState *state, int nargs, CValue *args) {
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]));
cosmoV_pushRef(state, (CObj *)cosmoV_toString(state, args[0]));
return 1;
}
int cosmoB_loadstring(CState *state, int nargs, CValue *args) {
int cosmoB_loadstring(CState *state, int nargs, CValue *args)
{
if (nargs != 1) {
cosmoV_error(state, "loadstring() expected 1 argument, got %d!", nargs);
return 0;
@ -113,7 +123,8 @@ int cosmoB_loadstring(CState *state, int nargs, CValue *args) {
return 2; // <boolean>, <closure> or <error>
}
int cosmoB_error(CState *state, int nargs, CValue *args) {
int cosmoB_error(CState *state, int nargs, CValue *args)
{
if (nargs != 1) {
cosmoV_error(state, "error() expected 1 argument, got %d!", nargs);
return 0;
@ -129,31 +140,16 @@ int cosmoB_error(CState *state, int nargs, CValue *args) {
return 0;
}
void cosmoB_loadLibrary(CState *state) {
const char *identifiers[] = {
"print",
"assert",
"type",
"pcall",
"tonumber",
"tostring",
"loadstring",
"error"
};
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
};
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++) {
for (i = 0; i < sizeof(identifiers) / sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, baseLib[i]);
}
@ -167,9 +163,11 @@ void cosmoB_loadLibrary(CState *state) {
cosmoB_loadMathLib(state);
}
// ================================================================ [OBJECT.*] ================================================================
// ================================================================ [OBJECT.*]
// ================================================================
int cosmoB_osetProto(CState *state, int nargs, CValue *args) {
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]);
@ -182,25 +180,28 @@ int cosmoB_osetProto(CState *state, int nargs, CValue *args) {
return 0; // nothing
}
int cosmoB_ogetProto(CState *state, int nargs, CValue *args) {
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
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) {
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]));
cosmoV_typeError(state, "object.ischild()", "<reference obj>, <object>", "%s, %s",
cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
@ -212,14 +213,11 @@ int cosmoB_oisChild(CState *state, int nargs, CValue *args) {
return 1;
}
COSMO_API void cosmoB_loadObjLib(CState *state) {
const char *identifiers[] = {
"ischild"
};
COSMO_API void cosmoB_loadObjLib(CState *state)
{
const char *identifiers[] = {"ischild"};
CosmoCFunction objLib[] = {
cosmoB_oisChild
};
CosmoCFunction objLib[] = {cosmoB_oisChild};
// make object library object
cosmoV_pushString(state, "object");
@ -242,7 +240,7 @@ COSMO_API void cosmoB_loadObjLib(CState *state) {
cosmoV_makeTable(state, 1);
int i;
for (i = 0; i < sizeof(identifiers)/sizeof(identifiers[0]); i++) {
for (i = 0; i < sizeof(identifiers) / sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, objLib[i]);
}
@ -256,10 +254,12 @@ COSMO_API void cosmoB_loadObjLib(CState *state) {
cosmoV_register(state, 1);
}
// ================================================================ [OS.*] ================================================================
// ================================================================ [OS.*]
// ================================================================
// os.read()
int cosmoB_osRead(CState *state, int nargs, CValue *args) {
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;
@ -303,7 +303,8 @@ int cosmoB_osRead(CState *state, int nargs, CValue *args) {
}
// os.time()
int cosmoB_osTime(CState *state, int nargs, CValue *args) {
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);
@ -316,7 +317,8 @@ int cosmoB_osTime(CState *state, int nargs, CValue *args) {
}
// os.system()
int cosmoB_osSystem(CState *state, int nargs, CValue *args) {
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;
@ -332,23 +334,16 @@ int cosmoB_osSystem(CState *state, int nargs, CValue *args) {
return 1;
}
COSMO_API void cosmoB_loadOSLib(CState *state) {
const char *identifiers[] = {
"read",
"time",
"system"
};
COSMO_API void cosmoB_loadOSLib(CState *state)
{
const char *identifiers[] = {"read", "time", "system"};
CosmoCFunction osLib[] = {
cosmoB_osRead,
cosmoB_osTime,
cosmoB_osSystem
};
CosmoCFunction osLib[] = {cosmoB_osRead, cosmoB_osTime, cosmoB_osSystem};
cosmoV_pushString(state, "os");
int i;
for (i = 0; i < sizeof(identifiers)/sizeof(identifiers[0]); i++) {
for (i = 0; i < sizeof(identifiers) / sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, osLib[i]);
}
@ -357,13 +352,16 @@ COSMO_API void cosmoB_loadOSLib(CState *state) {
cosmoV_register(state, 1); // register the os.* object to the global table
}
// ================================================================ [STRING.*] ================================================================
// ================================================================ [STRING.*]
// ================================================================
// string.sub
int cosmoB_sSub(CState *state, int nargs, CValue *args) {
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]));
cosmoV_typeError(state, "string.sub()", "<string>, <number>", "%s, %s",
cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
@ -372,14 +370,17 @@ int cosmoB_sSub(CState *state, int nargs, CValue *args) {
// 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);
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]));
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;
}
@ -389,7 +390,9 @@ int cosmoB_sSub(CState *state, int nargs, CValue *args) {
// 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);
cosmoV_error(
state, "string.sub() expected subbed string goes out of bounds, max length is %d!",
str->length);
return 0;
}
@ -403,10 +406,12 @@ int cosmoB_sSub(CState *state, int nargs, CValue *args) {
}
// string.find
int cosmoB_sFind(CState *state, int nargs, CValue *args) {
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]));
cosmoV_typeError(state, "string.find()", "<string>, <string>", "%s, %s",
cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
@ -425,7 +430,9 @@ int cosmoB_sFind(CState *state, int nargs, CValue *args) {
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]));
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;
}
@ -452,14 +459,16 @@ int cosmoB_sFind(CState *state, int nargs, CValue *args) {
}
// string.split
int cosmoB_sSplit(CState *state, int nargs, CValue *args) {
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]));
cosmoV_typeError(state, "string.split()", "<string>, <string>", "%s, %s",
cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
@ -475,7 +484,8 @@ int cosmoB_sSplit(CState *state, int nargs, CValue *args) {
nIndx = strstr(indx, ptrn->str);
cosmoV_pushNumber(state, nEntries++);
cosmoV_pushLString(state, indx, nIndx == NULL ? str->length - (indx - str->str) : nIndx - indx);
cosmoV_pushLString(state, indx,
nIndx == NULL ? str->length - (indx - str->str) : nIndx - indx);
indx = nIndx + ptrn->length;
} while (nIndx != NULL);
@ -486,7 +496,8 @@ int cosmoB_sSplit(CState *state, int nargs, CValue *args) {
}
// string.byte
int cosmoB_sByte(CState *state, int nargs, CValue *args) {
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;
@ -500,8 +511,8 @@ int cosmoB_sByte(CState *state, int nargs, CValue *args) {
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
// 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;
}
@ -511,7 +522,8 @@ int cosmoB_sByte(CState *state, int nargs, CValue *args) {
}
// string.char
int cosmoB_sChar(CState *state, int nargs, CValue *args) {
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;
@ -522,7 +534,8 @@ int cosmoB_sChar(CState *state, int nargs, CValue *args) {
return 0;
}
// small side effect of truncating the number, but ignoring the decimal instead of throwing an error is the better option imo
// 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;
@ -536,7 +549,8 @@ int cosmoB_sChar(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_sLen(CState *state, int nargs, CValue *args) {
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;
@ -552,7 +566,8 @@ int cosmoB_sLen(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_sRep(CState *state, int nargs, CValue *args) {
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;
@ -560,7 +575,8 @@ int cosmoB_sRep(CState *state, int nargs, CValue *args) {
// 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]));
cosmoV_typeError(state, "string.rep", "<string>, <number>", "%s, %s",
cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
@ -584,35 +600,21 @@ int cosmoB_sRep(CState *state, int nargs, CValue *args) {
newStr[length] = '\0';
// finally, push the resulting string onto the stack
cosmoV_pushRef(state, (CObj*)cosmoO_takeString(state, newStr, length));
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"
};
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
};
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++) {
for (i = 0; i < sizeof(identifiers) / sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, strLib[i]);
}
@ -626,10 +628,12 @@ void cosmoB_loadStrLib(CState *state) {
cosmoV_register(state, 1);
}
// ================================================================ [MATH] ================================================================
// ================================================================ [MATH]
// ================================================================
// math.abs
int cosmoB_mAbs(CState *state, int nargs, CValue *args) {
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;
@ -645,7 +649,8 @@ int cosmoB_mAbs(CState *state, int nargs, CValue *args) {
}
// math.floor
int cosmoB_mFloor(CState *state, int nargs, CValue *args) {
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;
@ -661,7 +666,8 @@ int cosmoB_mFloor(CState *state, int nargs, CValue *args) {
}
// math.ceil
int cosmoB_mCeil(CState *state, int nargs, CValue *args) {
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;
@ -684,7 +690,8 @@ int cosmoB_mCeil(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mSin(CState *state, int nargs, CValue *args) {
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;
@ -699,7 +706,8 @@ int cosmoB_mSin(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mCos(CState *state, int nargs, CValue *args) {
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;
@ -714,7 +722,8 @@ int cosmoB_mCos(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mTan(CState *state, int nargs, CValue *args) {
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;
@ -729,7 +738,8 @@ int cosmoB_mTan(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mASin(CState *state, int nargs, CValue *args) {
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;
@ -744,7 +754,8 @@ int cosmoB_mASin(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mACos(CState *state, int nargs, CValue *args) {
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;
@ -759,7 +770,8 @@ int cosmoB_mACos(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mATan(CState *state, int nargs, CValue *args) {
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;
@ -774,7 +786,8 @@ int cosmoB_mATan(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mRad(CState *state, int nargs, CValue *args) {
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;
@ -790,7 +803,8 @@ int cosmoB_mRad(CState *state, int nargs, CValue *args) {
return 1;
}
int cosmoB_mDeg(CState *state, int nargs, CValue *args) {
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;
@ -806,39 +820,19 @@ int cosmoB_mDeg(CState *state, int nargs, CValue *args) {
return 1;
}
void cosmoB_loadMathLib(CState *state) {
const char *identifiers[] = {
"abs",
"floor",
"ceil",
"sin",
"cos",
"tan",
"asin",
"acos",
"atan",
"rad",
"deg"
};
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
};
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++) {
for (i = 0; i < sizeof(identifiers) / sizeof(identifiers[0]); i++) {
cosmoV_pushString(state, identifiers[i]);
cosmoV_pushCFunction(state, mathLib[i]);
}
@ -852,41 +846,47 @@ void cosmoB_loadMathLib(CState *state) {
cosmoV_register(state, 1);
}
// ================================================================ [VM.*] ================================================================
// ================================================================ [VM.*]
// ================================================================
// vm.__getter["globals"]
int cosmoB_vgetGlobal(CState *state, int nargs, CValue *args) {
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);
cosmoV_pushRef(state, (CObj *)state->globals);
return 1;
}
// vm.__setter["globals"]
int cosmoB_vsetGlobal(CState *state, int nargs, CValue *args) {
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]));
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]);
CObjTable *tbl = (CObjTable *)cosmoV_readRef(args[1]);
state->globals = tbl;
return 0;
}
int cosmoB_vindexBProto(CState *state, int nargs, CValue *args) {
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]));
cosmoV_typeError(state, "baseProtos.__index", "<object>, <number>", "%s, %s",
cosmoV_typeStr(args[0]), cosmoV_typeStr(args[1]));
return 0;
}
@ -898,21 +898,24 @@ int cosmoB_vindexBProto(CState *state, int nargs, CValue *args) {
}
if (state->protoObjects[indx] != NULL)
cosmoV_pushRef(state, (CObj*)state->protoObjects[indx]);
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) {
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]));
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;
}
@ -929,7 +932,8 @@ int cosmoB_vnewindexBProto(CState *state, int nargs, CValue *args) {
}
// vm.collect()
int cosmoB_vcollect(CState *state, int nargs, CValue *args) {
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);
@ -943,7 +947,8 @@ int cosmoB_vcollect(CState *state, int nargs, CValue *args) {
return 0;
}
void cosmoB_loadVM(CState *state) {
void cosmoB_loadVM(CState *state)
{
// make vm.* object
cosmoV_pushString(state, "vm");

3
src/cbaselib.h
View File

@ -32,7 +32,8 @@ COSMO_API void cosmoB_loadOSLib(CState *state);
- string.char & <string>:char()
- string.rep & <string>:rep()
The base proto object for strings is also set, allowing you to invoke the string.* api through string objects, eg.
The base proto object for strings is also set, allowing you to invoke the string.* api through
string objects, eg.
`"hello world":split(" ")` is equivalent to `string.split("hello world", " ")`
*/
COSMO_API void cosmoB_loadStrLib(CState *state);

31
src/cchunk.c
View File

@ -1,16 +1,19 @@
#include "cmem.h"
#include "cchunk.h"
#include "cmem.h"
#include "cobj.h"
#include "cvalue.h"
#include "cvm.h"
#include "cobj.h"
CChunk *newChunk(CState* state, size_t startCapacity) {
CChunk *newChunk(CState *state, size_t startCapacity)
{
CChunk *chunk = cosmoM_xmalloc(state, sizeof(CChunk));
initChunk(state, chunk, startCapacity);
return chunk;
}
void initChunk(CState* state, CChunk *chunk, size_t startCapacity) {
void initChunk(CState *state, CChunk *chunk, size_t startCapacity)
{
chunk->capacity = startCapacity;
chunk->lineCapacity = startCapacity;
chunk->count = 0;
@ -21,7 +24,8 @@ void initChunk(CState* state, CChunk *chunk, size_t startCapacity) {
initValArray(state, &chunk->constants, ARRAY_START);
}
void cleanChunk(CState* state, CChunk *chunk) {
void cleanChunk(CState *state, CChunk *chunk)
{
// first, free the chunk buffer
cosmoM_freearray(state, INSTRUCTION, chunk->buf, chunk->capacity);
// then the line info
@ -30,13 +34,15 @@ void cleanChunk(CState* state, CChunk *chunk) {
cleanValArray(state, &chunk->constants);
}
void freeChunk(CState* state, CChunk *chunk) {
void freeChunk(CState *state, CChunk *chunk)
{
cleanChunk(state, chunk);
// now, free the wrapper struct
cosmoM_free(state, CChunk, chunk);
}
int addConstant(CState* state, CChunk *chunk, CValue value) {
int addConstant(CState *state, CChunk *chunk, CValue value)
{
// before adding the constant, check if we already have it
for (size_t i = 0; i < chunk->constants.count; i++) {
if (cosmoV_equal(state, value, chunk->constants.values[i]))
@ -49,9 +55,11 @@ int addConstant(CState* state, CChunk *chunk, CValue value) {
return chunk->constants.count - 1; // return the index of the new constants
}
// ================================================================ [WRITE TO CHUNK] ================================================================
// ================================================================ [WRITE TO CHUNK]
// ================================================================
void writeu8Chunk(CState* state, CChunk *chunk, INSTRUCTION i, int line) {
void writeu8Chunk(CState *state, CChunk *chunk, INSTRUCTION i, int line)
{
// does the buffer need to be reallocated?
cosmoM_growarray(state, INSTRUCTION, chunk->buf, chunk->count, chunk->capacity);
cosmoM_growarray(state, int, chunk->lineInfo, chunk->count, chunk->lineCapacity);
@ -61,8 +69,9 @@ void writeu8Chunk(CState* state, CChunk *chunk, INSTRUCTION i, int line) {
chunk->buf[chunk->count++] = i;
}
void writeu16Chunk(CState* state, CChunk *chunk, uint16_t i, int line) {
INSTRUCTION *buffer = (INSTRUCTION*)(&i);
void writeu16Chunk(CState *state, CChunk *chunk, uint16_t i, int line)
{
INSTRUCTION *buffer = (INSTRUCTION *)(&i);
int sz = sizeof(uint16_t) / sizeof(INSTRUCTION);
for (int i = 0; i < sz; i++) {

28
src/cchunk.h
View File

@ -1,12 +1,12 @@
#ifndef CCHUNK_H
#define CCHUNK_H
#include "cosmo.h"
#include "coperators.h"
#include "cosmo.h"
#include "cvalue.h"
struct CChunk {
struct CChunk
{
size_t capacity; // the amount of space we've allocated for
size_t count; // the space we're currently using
INSTRUCTION *buf; // whole chunk
@ -15,23 +15,25 @@ struct CChunk {
int *lineInfo;
};
CChunk *newChunk(CState* state, size_t startCapacity);
void initChunk(CState* state, CChunk *chunk, size_t startCapacity);
void cleanChunk(CState* state, CChunk *chunk); // frees everything but the struct
void freeChunk(CState* state, CChunk *chunk); // frees everything including the struct
int addConstant(CState* state, CChunk *chunk, CValue value);
CChunk *newChunk(CState *state, size_t startCapacity);
void initChunk(CState *state, CChunk *chunk, size_t startCapacity);
void cleanChunk(CState *state, CChunk *chunk); // frees everything but the struct
void freeChunk(CState *state, CChunk *chunk); // frees everything including the struct
int addConstant(CState *state, CChunk *chunk, CValue value);
// write to chunk
void writeu8Chunk(CState* state, CChunk *chunk, INSTRUCTION i, int line);
void writeu16Chunk(CState* state, CChunk *chunk, uint16_t i, int line);
void writeu8Chunk(CState *state, CChunk *chunk, INSTRUCTION i, int line);
void writeu16Chunk(CState *state, CChunk *chunk, uint16_t i, int line);
// read from chunk
static inline INSTRUCTION readu8Chunk(CChunk *chunk, int offset) {
static inline INSTRUCTION readu8Chunk(CChunk *chunk, int offset)
{
return chunk->buf[offset];
}
static inline uint16_t readu16Chunk(CChunk *chunk, int offset) {
return *((uint16_t*)(&chunk->buf[offset]));
static inline uint16_t readu16Chunk(CChunk *chunk, int offset)
{
return *((uint16_t *)(&chunk->buf[offset]));
}
#endif

53
src/cdebug.c
View File

@ -1,49 +1,62 @@
#include "cdebug.h"
#include "cvalue.h"
#include "cobj.h"
void printIndent(int indent) {
#include "cobj.h"
#include "cvalue.h"
void printIndent(int indent)
{
for (int i = 0; i < indent; i++)
printf("\t");
}
int simpleInstruction(const char *name, int offset) {
int simpleInstruction(const char *name, int offset)
{
printf("%s", name);
return offset + 1; // consume opcode
}
int u8OperandInstruction(const char *name, CChunk *chunk, int offset) {
int u8OperandInstruction(const char *name, CChunk *chunk, int offset)
{
printf("%-16s [%03d]", name, readu8Chunk(chunk, offset + 1));
return offset + 2;
}
int u16OperandInstruction(const char *name, CChunk *chunk, int offset) {
int u16OperandInstruction(const char *name, CChunk *chunk, int offset)
{
printf("%-16s [%05d]", name, readu16Chunk(chunk, offset + 1));
return offset + 1 + (sizeof(uint16_t) / sizeof(INSTRUCTION));
}
int JumpInstruction(const char *name, CChunk *chunk, int offset, int dir) {
int JumpInstruction(const char *name, CChunk *chunk, int offset, int dir)
{
int jmp = ((int)readu16Chunk(chunk, offset + 1)) * dir;
printf("%-16s [%05d] - jumps to %04d", name, jmp, offset + 3 + jmp);
return offset + 1 + (sizeof(uint16_t) / sizeof(INSTRUCTION));
}
int u8u8OperandInstruction(const char *name, CChunk *chunk, int offset) {
printf("%-16s [%03d] [%03d]", name, readu8Chunk(chunk, offset + 1), readu8Chunk(chunk, offset + 2));
int u8u8OperandInstruction(const char *name, CChunk *chunk, int offset)
{
printf("%-16s [%03d] [%03d]", name, readu8Chunk(chunk, offset + 1),
readu8Chunk(chunk, offset + 2));
return offset + 3; // op + u8 + u8
}
int u8u16OperandInstruction(const char *name, CChunk *chunk, int offset) {
printf("%-16s [%03d] [%05d]", name, readu8Chunk(chunk, offset + 1), readu16Chunk(chunk, offset + 2));
int u8u16OperandInstruction(const char *name, CChunk *chunk, int offset)
{
printf("%-16s [%03d] [%05d]", name, readu8Chunk(chunk, offset + 1),
readu16Chunk(chunk, offset + 2));
return offset + 4; // op + u8 + u16
}
int u8u8u16OperandInstruction(const char *name, CChunk *chunk, int offset) {
printf("%-16s [%03d] [%03d] [%05d]", name, readu8Chunk(chunk, offset + 1), readu8Chunk(chunk, offset + 2), readu16Chunk(chunk, offset + 3));
int u8u8u16OperandInstruction(const char *name, CChunk *chunk, int offset)
{
printf("%-16s [%03d] [%03d] [%05d]", name, readu8Chunk(chunk, offset + 1),
readu8Chunk(chunk, offset + 2), readu16Chunk(chunk, offset + 3));
return offset + 5; // op + u8 + u8 + u16
}
int constInstruction(const char *name, CChunk *chunk, int offset) {
int constInstruction(const char *name, CChunk *chunk, int offset)
{
int index = readu16Chunk(chunk, offset + 1);
printf("%-16s [%05d] - ", name, index);
CValue val = chunk->constants.values[index];
@ -55,7 +68,8 @@ int constInstruction(const char *name, CChunk *chunk, int offset) {
// public methods in the cdebug.h header
void disasmChunk(CChunk *chunk, const char *name, int indent) {
void disasmChunk(CChunk *chunk, const char *name, int indent)
{
printIndent(indent);
printf("===[[ disasm for %s ]]===\n", name);
@ -65,7 +79,8 @@ void disasmChunk(CChunk *chunk, const char *name, int indent) {
}
}
int disasmInstr(CChunk *chunk, int offset, int indent) {
int disasmInstr(CChunk *chunk, int offset, int indent)
{
printIndent(indent);
printf("%04d ", offset);
@ -109,7 +124,7 @@ int disasmInstr(CChunk *chunk, int offset, int indent) {
int index = readu16Chunk(chunk, offset + 1);
printf("%-16s [%05d] - ", "OP_CLOSURE", index);
CValue val = chunk->constants.values[index];
CObjFunction *cobjFunc = (CObjFunction*)cosmoV_readRef(val);
CObjFunction *cobjFunc = (CObjFunction *)cosmoV_readRef(val);
offset += 3; // we consumed the opcode + u16
printValue(val);
@ -124,7 +139,8 @@ int disasmInstr(CChunk *chunk, int offset, int indent) {
}
// print the chunk
disasmChunk(&cobjFunc->chunk, cobjFunc->name == NULL ? UNNAMEDCHUNK : cobjFunc->name->str, indent+1);
disasmChunk(&cobjFunc->chunk, cobjFunc->name == NULL ? UNNAMEDCHUNK : cobjFunc->name->str,
indent + 1);
return offset;
}
case OP_CLOSE:
@ -204,6 +220,5 @@ int disasmInstr(CChunk *chunk, int offset, int indent) {
return 1;
}
return 1;
}

224
src/clex.c
View File

@ -1,72 +1,81 @@
#include "clex.h"
#include "cmem.h"
#include <string.h>
CReservedWord reservedWords[] = {
{TOKEN_AND, "and", 3},
{TOKEN_BREAK, "break", 5},
{ TOKEN_AND, "and", 3},
{ TOKEN_BREAK, "break", 5},
{TOKEN_CONTINUE, "continue", 8},
{TOKEN_DO, "do", 2},
{TOKEN_ELSE, "else", 4},
{TOKEN_ELSEIF, "elseif", 6},
{TOKEN_END, "end", 3},
{TOKEN_FALSE, "false", 5},
{TOKEN_FOR, "for", 3},
{ TOKEN_DO, "do", 2},
{ TOKEN_ELSE, "else", 4},
{ TOKEN_ELSEIF, "elseif", 6},
{ TOKEN_END, "end", 3},
{ TOKEN_FALSE, "false", 5},
{ TOKEN_FOR, "for", 3},
{TOKEN_FUNCTION, "function", 8},
{TOKEN_IF, "if", 2},
{TOKEN_IN, "in", 2},
{TOKEN_LOCAL, "local", 5},
{TOKEN_NIL, "nil", 3},
{TOKEN_NOT, "not", 3},
{TOKEN_OR, "or", 2},
{TOKEN_PROTO, "proto", 5},
{TOKEN_RETURN, "return", 6},
{TOKEN_THEN, "then", 4},
{TOKEN_TRUE, "true", 4},
{TOKEN_VAR, "var", 3},
{TOKEN_WHILE, "while", 5}
{ TOKEN_IF, "if", 2},
{ TOKEN_IN, "in", 2},
{ TOKEN_LOCAL, "local", 5},
{ TOKEN_NIL, "nil", 3},
{ TOKEN_NOT, "not", 3},
{ TOKEN_OR, "or", 2},
{ TOKEN_PROTO, "proto", 5},
{ TOKEN_RETURN, "return", 6},
{ TOKEN_THEN, "then", 4},
{ TOKEN_TRUE, "true", 4},
{ TOKEN_VAR, "var", 3},
{ TOKEN_WHILE, "while", 5}
};
// returns true if current token is a heap allocated buffer
static bool isBuffer(CLexState *state) {
static bool isBuffer(CLexState *state)
{
return state->buffer != NULL;
}
// marks the current token as heap allocated & allocates the buffer
static void makeBuffer(CLexState *state) {
state->buffer = cosmoM_xmalloc(state->cstate, sizeof(char) * 32); // start with a 32 character long buffer
static void makeBuffer(CLexState *state)
{
state->buffer =
cosmoM_xmalloc(state->cstate, sizeof(char) * 32); // start with a 32 character long buffer
state->bufCount = 0;
state->bufCap = 32;
}
static void resetBuffer(CLexState *state) {
static void resetBuffer(CLexState *state)
{
state->buffer = NULL;
state->bufCount = 0;
state->bufCap = 0;
}
// cancels the token heap buffer and frees it
static void freeBuffer(CLexState *state) {
static void freeBuffer(CLexState *state)
{
cosmoM_freearray(state->cstate, char, state->buffer, state->bufCap);
resetBuffer(state);
}
// adds character to buffer
static void appendBuffer(CLexState *state, char c) {
static void appendBuffer(CLexState *state, char c)
{
cosmoM_growarray(state->cstate, char, state->buffer, state->bufCount, state->bufCap);
state->buffer[state->bufCount++] = c;
}
// saves the current character to the buffer, grows the buffer as needed
static void saveBuffer(CLexState *state) {
static void saveBuffer(CLexState *state)
{
appendBuffer(state, *state->currentChar);
}
// resets the lex state buffer & returns the allocated buffer as a null terminated string
static char *cutBuffer(CLexState *state, int *length) {
static char *cutBuffer(CLexState *state, int *length)
{
// append the null terminator
appendBuffer(state, '\0');
@ -84,7 +93,8 @@ static char *cutBuffer(CLexState *state, int *length) {
return cosmoM_reallocate(state->cstate, buf, cap, count);
}
static CToken makeToken(CLexState *state, CTokenType type) {
static CToken makeToken(CLexState *state, CTokenType type)
{
CToken token;
token.type = type;
token.line = state->line;
@ -101,10 +111,11 @@ static CToken makeToken(CLexState *state, CTokenType type) {
return token;
}
static CToken makeError(CLexState *state, const char *msg) {
static CToken makeError(CLexState *state, const char *msg)
{
CToken token;
token.type = TOKEN_ERROR;
token.start = (char*)msg;
token.start = (char *)msg;
token.length = strlen(msg);
token.line = state->line;
@ -114,19 +125,23 @@ static CToken makeError(CLexState *state, const char *msg) {
return token;
}
static inline bool isEnd(CLexState *state) {
static inline bool isEnd(CLexState *state)
{
return *state->currentChar == '\0';
}
static inline bool isNumerical(char c) {
static inline bool isNumerical(char c)
{
return c >= '0' && c <= '9';
}
static bool isAlpha(char c) {
static bool isAlpha(char c)
{
return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_'; // identifiers can have '_'
}
static bool match(CLexState *state, char expected) {
static bool match(CLexState *state, char expected)
{
if (isEnd(state) || *state->currentChar != expected)
return false;
@ -135,35 +150,41 @@ static bool match(CLexState *state, char expected) {
return true;
}
char peek(CLexState *state) {
char peek(CLexState *state)
{
return *state->currentChar;
}
static char peekNext(CLexState *state) {
static char peekNext(CLexState *state)
{
if (isEnd(state))
return '\0';
return state->currentChar[1];
}
char next(CLexState *state) {
char next(CLexState *state)
{
if (isEnd(state))
return '\0'; // return a null terminator
state->currentChar++;
return state->currentChar[-1];
}
bool isHex(char c) {
bool isHex(char c)
{
return isNumerical(c) || ('A' <= c && 'F' >= c) || ('a' <= c && 'f' >= c);
}
CTokenType identifierType(CLexState *state) {
CTokenType identifierType(CLexState *state)
{
int length = state->currentChar - state->startChar;
// check against reserved word list
for (size_t i = 0; i < sizeof(reservedWords) / sizeof(CReservedWord); i++) {
// it matches the reserved word
if (reservedWords[i].len == length && memcmp(state->startChar, reservedWords[i].word, length) == 0)
if (reservedWords[i].len == length &&
memcmp(state->startChar, reservedWords[i].word, length) == 0)
return reservedWords[i].type;
}
@ -171,7 +192,8 @@ CTokenType identifierType(CLexState *state) {
return TOKEN_IDENTIFIER;
}
void skipWhitespace(CLexState *state) {
void skipWhitespace(CLexState *state)
{
while (true) {
char c = peek(state);
switch (c) {
@ -184,14 +206,19 @@ void skipWhitespace(CLexState *state) {
break;
case '/': // consume comments
if (peekNext(state) == '/') {
// skip to next line (also let \n be consumed on the next iteration to properly handle that)
while (!isEnd(state) && peek(state) != '\n') // if it's not a newline or the end of the source
// skip to next line (also let \n be consumed on the next iteration to properly
// handle that)
while (!isEnd(state) &&
peek(state) != '\n') // if it's not a newline or the end of the source
next(state);
// keep consuming whitespace
break;
} else if (peekNext(state) == '*') { // multiline comments
while (!isEnd(state) && !(peek(state) == '*' && peekNext(state) == '/')) // if it's the end of the comment or the end of the source
while (!isEnd(state) &&
!(peek(state) == '*' &&
peekNext(state) ==
'/')) // if it's the end of the comment or the end of the source
next(state);
// consume the '*/'
@ -208,7 +235,8 @@ void skipWhitespace(CLexState *state) {
}
}
CToken parseString(CLexState *state) {
CToken parseString(CLexState *state)
{
makeBuffer(state); // buffer mode
while (peek(state) != '"' && !isEnd(state)) {
switch (peek(state)) {
@ -218,10 +246,19 @@ CToken parseString(CLexState *state) {
next(state); // consume the '\' character
switch (peek(state)) {
case 'r': case 'n': appendBuffer(state, '\n'); break;
case 't': appendBuffer(state, '\t'); break;
case '\\': appendBuffer(state, '\\'); break;
case '"': appendBuffer(state, '"'); break;
case 'r':
case 'n':
appendBuffer(state, '\n');
break;
case 't':
appendBuffer(state, '\t');
break;
case '\\':
appendBuffer(state, '\\');
break;
case '"':
appendBuffer(state, '"');
break;
case 'x': // hexadecimal character encoding
next(state); // skip 'x'
@ -282,7 +319,8 @@ CToken parseString(CLexState *state) {
break;
}
return makeError(state, "Unknown special character!"); // TODO: maybe a more descriptive error?
return makeError(
state, "Unknown special character!"); // TODO: maybe a more descriptive error?
}
}
@ -303,7 +341,8 @@ CToken parseString(CLexState *state) {
return makeToken(state, TOKEN_STRING);
}
CToken parseNumber(CLexState *state) {
CToken parseNumber(CLexState *state)
{
switch (peek(state)) {
case 'x': // hexadecimal number
next(state);
@ -325,7 +364,6 @@ CToken parseNumber(CLexState *state) {
// if it is a number, fall through and parse normally
}
// consume number
while (isNumerical(peek(state))) {
next(state);
@ -342,7 +380,8 @@ CToken parseNumber(CLexState *state) {
return makeToken(state, TOKEN_NUMBER);
}
CToken parseIdentifier(CLexState *state) {
CToken parseIdentifier(CLexState *state)
{
// read literal
while ((isAlpha(peek(state)) || isNumerical(peek(state))) && !isEnd(state))
next(state);
@ -350,10 +389,11 @@ CToken parseIdentifier(CLexState *state) {
return makeToken(state, identifierType(state)); // is it a reserved word?
}
CLexState *cosmoL_newLexState(CState *cstate, const char *source) {
CLexState *cosmoL_newLexState(CState *cstate, const char *source)
{
CLexState *state = cosmoM_xmalloc(cstate, sizeof(CLexState));
state->startChar = (char*)source;
state->currentChar = (char*)source;
state->startChar = (char *)source;
state->currentChar = (char *)source;
state->line = 1;
state->lastLine = 0;
state->lastType = TOKEN_ERROR;
@ -364,11 +404,13 @@ CLexState *cosmoL_newLexState(CState *cstate, const char *source) {
return state;
}
void cosmoL_freeLexState(CState *state, CLexState *lstate) {
void cosmoL_freeLexState(CState *state, CLexState *lstate)
{
cosmoM_free(state, CLexState, lstate);
}
CToken cosmoL_scanToken(CLexState *state) {
CToken cosmoL_scanToken(CLexState *state)
{
skipWhitespace(state);
state->startChar = state->currentChar;
@ -380,37 +422,59 @@ CToken cosmoL_scanToken(CLexState *state) {
switch (c) {
// single character tokens
case '(': return makeToken(state, TOKEN_LEFT_PAREN);
case ')': return makeToken(state, TOKEN_RIGHT_PAREN);
case '{': return makeToken(state, TOKEN_LEFT_BRACE);
case '}': return makeToken(state, TOKEN_RIGHT_BRACE);
case '[': return makeToken(state, TOKEN_LEFT_BRACKET);
case ']': return makeToken(state, TOKEN_RIGHT_BRACKET);
case ';': return makeToken(state, TOKEN_EOS);
case ',': return makeToken(state, TOKEN_COMMA);
case ':': return makeToken(state, TOKEN_COLON);
case '*': return makeToken(state, TOKEN_STAR);
case '%': return makeToken(state, TOKEN_PERCENT);
case '^': return makeToken(state, TOKEN_CARROT);
case '#': return makeToken(state, TOKEN_POUND);
case '/': return makeToken(state, TOKEN_SLASH);
case '(':
return makeToken(state, TOKEN_LEFT_PAREN);
case ')':
return makeToken(state, TOKEN_RIGHT_PAREN);
case '{':
return makeToken(state, TOKEN_LEFT_BRACE);
case '}':
return makeToken(state, TOKEN_RIGHT_BRACE);
case '[':
return makeToken(state, TOKEN_LEFT_BRACKET);
case ']':
return makeToken(state, TOKEN_RIGHT_BRACKET);
case ';':
return makeToken(state, TOKEN_EOS);
case ',':
return makeToken(state, TOKEN_COMMA);
case ':':
return makeToken(state, TOKEN_COLON);
case '*':
return makeToken(state, TOKEN_STAR);
case '%':
return makeToken(state, TOKEN_PERCENT);
case '^':
return makeToken(state, TOKEN_CARROT);
case '#':
return makeToken(state, TOKEN_POUND);
case '/':
return makeToken(state, TOKEN_SLASH);
// two character tokens
case '+':
return match(state, '+') ? makeToken(state, TOKEN_PLUS_PLUS) : makeToken(state, TOKEN_PLUS);
case '-':
return match(state, '-') ? makeToken(state, TOKEN_MINUS_MINUS) : makeToken(state, TOKEN_MINUS);
return match(state, '-') ? makeToken(state, TOKEN_MINUS_MINUS)
: makeToken(state, TOKEN_MINUS);
case '.':
return match(state, '.') ? (match(state, '.') ? makeToken(state, TOKEN_DOT_DOT_DOT) : makeToken(state, TOKEN_DOT_DOT)) : makeToken(state, TOKEN_DOT);
return match(state, '.') ? (match(state, '.') ? makeToken(state, TOKEN_DOT_DOT_DOT)
: makeToken(state, TOKEN_DOT_DOT))
: makeToken(state, TOKEN_DOT);
case '!':
return match(state, '=') ? makeToken(state, TOKEN_BANG_EQUAL) : makeToken(state, TOKEN_BANG);
return match(state, '=') ? makeToken(state, TOKEN_BANG_EQUAL)
: makeToken(state, TOKEN_BANG);
case '=':
return match(state, '=') ? makeToken(state, TOKEN_EQUAL_EQUAL) : makeToken(state, TOKEN_EQUAL);
return match(state, '=') ? makeToken(state, TOKEN_EQUAL_EQUAL)
: makeToken(state, TOKEN_EQUAL);
case '>':
return match(state, '=') ? makeToken(state, TOKEN_GREATER_EQUAL) : makeToken(state, TOKEN_GREATER);
return match(state, '=') ? makeToken(state, TOKEN_GREATER_EQUAL)
: makeToken(state, TOKEN_GREATER);
case '<':
return match(state, '=') ? makeToken(state, TOKEN_LESS_EQUAL) : makeToken(state, TOKEN_LESS);
return match(state, '=') ? makeToken(state, TOKEN_LESS_EQUAL)
: makeToken(state, TOKEN_LESS);
// literals
case '"': return parseString(state);
case '"':
return parseString(state);
default:
if (isNumerical(c))
return parseNumber(state);

15
src/clex.h
View File

@ -3,7 +3,8 @@
#include "cosmo.h"
typedef enum {
typedef enum
{
// single character tokens
TOKEN_LEFT_PAREN,
TOKEN_RIGHT_PAREN,
@ -72,23 +73,27 @@ typedef enum {
TOKEN_EOF
} CTokenType;
typedef struct {
typedef struct
{
CTokenType type;
const char *word;
int len;
} CReservedWord;
typedef struct {
typedef struct
{
CTokenType type;
char *start;
int length;
int line;
} CToken;
typedef struct {
typedef struct
{
char *currentChar;
char *startChar;
char *buffer; // if non-NULL & bufCount > 0, token->start & token->length will be set to buffer & bufCount respectively
char *buffer; // if non-NULL & bufCount > 0, token->start & token->length will be set to buffer
// & bufCount respectively
size_t bufCount;
size_t bufCap;
int line; // current line

124
src/cmem.c
View File

@ -1,13 +1,15 @@
#include "cmem.h"
#include "cstate.h"
#include "cvalue.h"
#include "ctable.h"
#include "cparse.h"
#include "cobj.h"
#include "cbaselib.h"
#include "cobj.h"
#include "cparse.h"
#include "cstate.h"
#include "ctable.h"
#include "cvalue.h"
// realloc wrapper
void *cosmoM_reallocate(CState* state, void *buf, size_t oldSize, size_t newSize) {
void *cosmoM_reallocate(CState *state, void *buf, size_t oldSize, size_t newSize)
{
state->allocatedBytes += newSize - oldSize;
if (newSize == 0) { // it needs to be freed
@ -19,11 +21,11 @@ void *cosmoM_reallocate(CState* state, void *buf, size_t oldSize, size_t newSize
if (!(cosmoM_isFrozen(state)) && newSize > oldSize) {
cosmoM_collectGarbage(state);
}
#ifdef GC_DEBUG
# ifdef GC_DEBUG
else {
printf("GC event ignored! state frozen! [%d]\n", state->freezeGC);
}
#endif
# endif
#else
cosmoM_checkGarbage(state, 0);
#endif
@ -39,7 +41,8 @@ void *cosmoM_reallocate(CState* state, void *buf, size_t oldSize, size_t newSize
return newBuf;
}
COSMO_API bool cosmoM_checkGarbage(CState *state, size_t needed) {
COSMO_API bool cosmoM_checkGarbage(CState *state, size_t needed)
{
if (!(cosmoM_isFrozen(state)) && state->allocatedBytes + needed > state->nextGC) {
cosmoM_collectGarbage(state); // cya lol
return true;
@ -51,7 +54,8 @@ COSMO_API bool cosmoM_checkGarbage(CState *state, size_t needed) {
void markObject(CState *state, CObj *obj);
void markValue(CState *state, CValue val);
void markTable(CState *state, CTable *tbl) {
void markTable(CState *state, CTable *tbl)
{
if (tbl->table == NULL) // table is still being initialized
return;
@ -64,14 +68,17 @@ void markTable(CState *state, CTable *tbl) {
}
// frees white members from the table
void tableRemoveWhite(CState *state, CTable *tbl) {
void tableRemoveWhite(CState *state, CTable *tbl)
{
if (tbl->table == NULL) // table is still being initialized
return;
int cap = tbl->capacityMask + 1;
for (int i = 0; i < cap; i++) {
CTableEntry *entry = &tbl->table[i];
if (IS_REF(entry->key) && !(cosmoV_readRef(entry->key))->isMarked) { // if the key is a object and it's white (unmarked), remove it from the table
if (IS_REF(entry->key) &&
!(cosmoV_readRef(entry->key))->isMarked) { // if the key is a object and it's white
// (unmarked), remove it from the table
cosmoT_remove(state, tbl, entry->key);
}
}
@ -79,7 +86,8 @@ void tableRemoveWhite(CState *state, CTable *tbl) {
cosmoT_checkShrink(state, tbl); // recovers the memory we're no longer using
}
void markArray(CState *state, CValueArray *array) {
void markArray(CState *state, CValueArray *array)
{
for (size_t i = 0; i < array->count; i++) {
markValue(state, array->values[i]);
}
@ -87,8 +95,9 @@ void markArray(CState *state, CValueArray *array) {
// mark all references associated with the object
// black = keep, white = discard
void blackenObject(CState *state, CObj *obj) {
markObject(state, (CObj*)obj->proto);
void blackenObject(CState *state, CObj *obj)
{
markObject(state, (CObj *)obj->proto);
switch (obj->type) {
case COBJ_STRING:
case COBJ_CFUNCTION:
@ -96,63 +105,64 @@ void blackenObject(CState *state, CObj *obj) {
break;
case COBJ_OBJECT: {
// mark everything this object is keeping track of
CObjObject *cobj = (CObjObject*)obj;
CObjObject *cobj = (CObjObject *)obj;
markTable(state, &cobj->tbl);
break;
}
case COBJ_TABLE: { // tables are just wrappers for CTable
CObjTable *tbl = (CObjTable*)obj;
CObjTable *tbl = (CObjTable *)obj;
markTable(state, &tbl->tbl);
break;
}
case COBJ_UPVALUE: {
markValue(state, ((CObjUpval*)obj)->closed);
markValue(state, ((CObjUpval *)obj)->closed);
break;
}
case COBJ_FUNCTION: {
CObjFunction *func = (CObjFunction*)obj;
markObject(state, (CObj*)func->name);
markObject(state, (CObj*)func->module);
CObjFunction *func = (CObjFunction *)obj;
markObject(state, (CObj *)func->name);
markObject(state, (CObj *)func->module);
markArray(state, &func->chunk.constants);
break;
}
case COBJ_METHOD: {
CObjMethod *method = (CObjMethod*)obj;
CObjMethod *method = (CObjMethod *)obj;
markValue(state, method->func);
markObject(state, (CObj*)method->obj);
markObject(state, (CObj *)method->obj);
break;
}
case COBJ_ERROR: {
CObjError *err = (CObjError*)obj;
CObjError *err = (CObjError *)obj;
markValue(state, err->err);
// mark callframes
for (int i = 0; i < err->frameCount; i++)
markObject(state, (CObj*)err->frames[i].closure);
markObject(state, (CObj *)err->frames[i].closure);
break;
}
case COBJ_CLOSURE: {
CObjClosure *closure = (CObjClosure*)obj;
markObject(state, (CObj*)closure->function);
CObjClosure *closure = (CObjClosure *)obj;
markObject(state, (CObj *)closure->function);
// mark all upvalues
for (int i = 0; i < closure->upvalueCount; i++) {
markObject(state, (CObj*)closure->upvalues[i]);
markObject(state, (CObj *)closure->upvalues[i]);
}
break;
}
default:
#ifdef GC_DEBUG
printf("Unknown type in blackenObject with %p, type %d\n", (void*)obj, obj->type);
printf("Unknown type in blackenObject with %p, type %d\n", (void *)obj, obj->type);
#endif
break;
}
}
void markObject(CState *state, CObj *obj) {
void markObject(CState *state, CObj *obj)
{
if (obj == NULL || obj->isMarked) // skip if NULL or already marked
return;
@ -169,25 +179,29 @@ void markObject(CState *state, CObj *obj) {
return;
// we can use cosmoM_growarray because we lock the GC when we entered in cosmoM_collectGarbage
cosmoM_growarray(state, CObj*, state->grayStack.array, state->grayStack.count, state->grayStack.capacity);
cosmoM_growarray(state, CObj *, state->grayStack.array, state->grayStack.count,
state->grayStack.capacity);
state->grayStack.array[state->grayStack.count++] = obj;
}
void markValue(CState *state, CValue val) {
void markValue(CState *state, CValue val)
{
if (IS_REF(val))
markObject(state, cosmoV_readRef(val));
}
// trace our gray references
void traceGrays(CState *state) {
void traceGrays(CState *state)
{
while (state->grayStack.count > 0) {
CObj* obj = state->grayStack.array[--state->grayStack.count];
CObj *obj = state->grayStack.array[--state->grayStack.count];
blackenObject(state, obj);
}
}
void sweep(CState *state) {
void sweep(CState *state)
{
CObj *prev = NULL;
CObj *object = state->objects;
while (object != NULL) {
@ -210,7 +224,8 @@ void sweep(CState *state) {
}
}
void markUserRoots(CState *state) {
void markUserRoots(CState *state)
{
CObj *root = state->userRoots;
// traverse userRoots and mark all the object
@ -220,7 +235,8 @@ void markUserRoots(CState *state) {
}
}
void markRoots(CState *state) {
void markRoots(CState *state)
{
// mark all values on the stack
for (StkPtr value = state->stack; value < state->top; value++) {
markValue(state, *value);
@ -228,33 +244,34 @@ void markRoots(CState *state) {
// mark all active callframe closures
for (int i = 0; i < state->frameCount; i++) {
markObject(state, (CObj*)state->callFrame[i].closure);
markObject(state, (CObj *)state->callFrame[i].closure);
}
// mark all open upvalues
for (CObjUpval *upvalue = state->openUpvalues; upvalue != NULL; upvalue = upvalue->next) {
markObject(state, (CObj*)upvalue);
markObject(state, (CObj *)upvalue);
}
markObject(state, (CObj*)state->globals);
markObject(state, (CObj *)state->globals);
// mark all internal strings
for (int i = 0; i < ISTRING_MAX; i++)
markObject(state, (CObj*)state->iStrings[i]);
markObject(state, (CObj *)state->iStrings[i]);
// mark the user defined roots
markUserRoots(state);
// mark other misc. internally reserved objects
markObject(state, (CObj*)state->error);
markObject(state, (CObj *)state->error);
for (int i = 0; i < COBJ_MAX; i++)
markObject(state, (CObj*)state->protoObjects[i]);
markObject(state, (CObj *)state->protoObjects[i]);
traceGrays(state);
}
COSMO_API void cosmoM_collectGarbage(CState *state) {
COSMO_API void cosmoM_collectGarbage(CState *state)
{
#ifdef GC_DEBUG
printf("-- GC start\n");
size_t start = state->allocatedBytes;
@ -263,26 +280,32 @@ COSMO_API void cosmoM_collectGarbage(CState *state) {
markRoots(state);
tableRemoveWhite(state, &state->strings); // make sure we aren't referencing any strings that are about to be freed
tableRemoveWhite(
state,
&state->strings); // make sure we aren't referencing any strings that are about to be freed
// now finally, free all the unmarked objects
sweep(state);
// set our next GC event
cosmoM_updateThreshhold(state);
state->freezeGC--; // we don't want to use cosmoM_unfreezeGC because that might trigger a GC event (if GC_STRESS is defined)
state->freezeGC--; // we don't want to use cosmoM_unfreezeGC because that might trigger a GC
// event (if GC_STRESS is defined)
#ifdef GC_DEBUG
printf("-- GC end, reclaimed %ld bytes (started at %ld, ended at %ld), next garbage collection scheduled at %ld bytes\n",
printf("-- GC end, reclaimed %ld bytes (started at %ld, ended at %ld), next garbage collection "
"scheduled at %ld bytes\n",
start - state->allocatedBytes, start, state->allocatedBytes, state->nextGC);
getchar(); // pauses execution
#endif
}
COSMO_API void cosmoM_updateThreshhold(CState *state) {
COSMO_API void cosmoM_updateThreshhold(CState *state)
{
state->nextGC = state->allocatedBytes * HEAP_GROW_FACTOR;
}
COSMO_API void cosmoM_addRoot(CState *state, CObj *newRoot) {
COSMO_API void cosmoM_addRoot(CState *state, CObj *newRoot)
{
// first, check and make sure this root doesn't already exist in the list
CObj *root = state->userRoots;
while (root != NULL) {
@ -297,7 +320,8 @@ COSMO_API void cosmoM_addRoot(CState *state, CObj *newRoot) {
state->userRoots = newRoot;
}
COSMO_API void cosmoM_removeRoot(CState *state, CObj *oldRoot) {
COSMO_API void cosmoM_removeRoot(CState *state, CObj *oldRoot)
{
CObj *prev = NULL;
CObj *root = state->userRoots;

37
src/cmem.h
View File

@ -2,22 +2,22 @@
#define CMEME_C // meme lol
#include "cosmo.h"
#include "cstate.h"
//#define GC_STRESS
//#define GC_DEBUG
// #define GC_STRESS
// #define GC_DEBUG
// arrays *must* grow by a factor of 2
#define GROW_FACTOR 2
#define HEAP_GROW_FACTOR 2
#define ARRAY_START 8
#ifdef GC_DEBUG
#define cosmoM_freearray(state, type, buf, capacity) \
printf("freeing array %p [size %lu] at %s:%d\n", buf, sizeof(type) * capacity, __FILE__, __LINE__); \
# define cosmoM_freearray(state, type, buf, capacity) \
printf("freeing array %p [size %lu] at %s:%d\n", buf, sizeof(type) * capacity, __FILE__, \
__LINE__); \
cosmoM_reallocate(state, buf, sizeof(type) * capacity, 0)
#else
#define cosmoM_freearray(state, type, buf, capacity) \
# define cosmoM_freearray(state, type, buf, capacity) \
cosmoM_reallocate(state, buf, sizeof(type) * capacity, 0)
#endif
@ -25,46 +25,44 @@
if (count >= capacity || buf == NULL) { \
int old = capacity; \
capacity = old * GROW_FACTOR; \
buf = (type*)cosmoM_reallocate(state, buf, sizeof(type) *old, sizeof(type) *capacity); \
buf = (type *)cosmoM_reallocate(state, buf, sizeof(type) * old, sizeof(type) * capacity); \
}
#ifdef GC_DEBUG
#define cosmoM_free(state, type, x) \
# define cosmoM_free(state, type, x) \
printf("freeing %p [size %lu] at %s:%d\n", x, sizeof(type), __FILE__, __LINE__); \
cosmoM_reallocate(state, x, sizeof(type), 0)
#else
#define cosmoM_free(state, type, x) \
cosmoM_reallocate(state, x, sizeof(type), 0)
# define cosmoM_free(state, type, x) cosmoM_reallocate(state, x, sizeof(type), 0)
#endif
#define cosmoM_isFrozen(state) \
(state->freezeGC > 0)
#define cosmoM_isFrozen(state) (state->freezeGC > 0)
// if debugging, print the locations of when the state is frozen/unfrozen
#ifdef GC_DEBUG
#define cosmoM_freezeGC(state) \
# define cosmoM_freezeGC(state) \
state->freezeGC++; \
printf("freezing state at %s:%d [%d]\n", __FILE__, __LINE__, state->freezeGC)
#define cosmoM_unfreezeGC(state) \
# define cosmoM_unfreezeGC(state) \
state->freezeGC--; \
printf("unfreezing state at %s:%d [%d]\n", __FILE__, __LINE__, state->freezeGC); \
cosmoM_checkGarbage(state, 0)
#else
// freeze's the garbage collector until cosmoM_unfreezeGC is called
#define cosmoM_freezeGC(state) \
state->freezeGC++
# define cosmoM_freezeGC(state) state->freezeGC++
// unfreeze's the garbage collector and tries to run a garbage collection cycle
#define cosmoM_unfreezeGC(state) \
# define cosmoM_unfreezeGC(state) \
state->freezeGC--; \
cosmoM_checkGarbage(state, 0)
#endif
COSMO_API void *cosmoM_reallocate(CState *state, void *buf, size_t oldSize, size_t newSize);
COSMO_API bool cosmoM_checkGarbage(CState *state, size_t needed); // returns true if GC event was triggered
COSMO_API bool cosmoM_checkGarbage(CState *state,
size_t needed); // returns true if GC event was triggered
COSMO_API void cosmoM_collectGarbage(CState *state);
COSMO_API void cosmoM_updateThreshhold(CState *state);
@ -75,7 +73,8 @@ COSMO_API void cosmoM_addRoot(CState *state, CObj *newRoot);
COSMO_API void cosmoM_removeRoot(CState *state, CObj *oldRoot);
// wrapper for cosmoM_reallocate so we can track our memory usage (it's also safer :P)
static inline void *cosmoM_xmalloc(CState *state, size_t sz) {
static inline void *cosmoM_xmalloc(CState *state, size_t sz)
{
return cosmoM_reallocate(state, NULL, 0, sz);
}

365
src/cobj.c
View File

@ -1,27 +1,30 @@
#include "cobj.h"
#include "clex.h"
#include "cmem.h"
#include "cstate.h"
#include "ctable.h"
#include "cobj.h"
#include "cmem.h"
#include "cvm.h"
#include "clex.h"
#include <string.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
// we don't actually hash the whole string :eyes:
uint32_t hashString(const char *str, size_t sz) {
uint32_t hashString(const char *str, size_t sz)
{
uint32_t hash = sz;
size_t step = (sz>>5)+1;
size_t step = (sz >> 5) + 1;
for (size_t i = sz; i >= step; i-=step)
hash = ((hash << 5) + (hash>>2)) + str[i-1];
for (size_t i = sz; i >= step; i -= step)
hash = ((hash << 5) + (hash >> 2)) + str[i - 1];
return hash;
}
CObj *cosmoO_allocateBase(CState *state, size_t sz, CObjType type) {
CObj* obj = (CObj*)cosmoM_xmalloc(state, sz);
CObj *cosmoO_allocateBase(CState *state, size_t sz, CObjType type)
{
CObj *obj = (CObj *)cosmoM_xmalloc(state, sz);
obj->type = type;
obj->isMarked = false;
obj->proto = state->protoObjects[type];
@ -36,33 +39,34 @@ CObj *cosmoO_allocateBase(CState *state, size_t sz, CObjType type) {
return obj;
}
void cosmoO_free(CState *state, CObj *obj) {
void cosmoO_free(CState *state, CObj *obj)
{
#ifdef GC_DEBUG
printf("freeing %p [", obj);
printObject(obj);
printf("]\n");
#endif
switch(obj->type) {
switch (obj->type) {
case COBJ_STRING: {
CObjString *objStr = (CObjString*)obj;
CObjString *objStr = (CObjString *)obj;
cosmoM_freearray(state, char, objStr->str, objStr->length + 1);
cosmoM_free(state, CObjString, objStr);
break;
}
case COBJ_OBJECT: {
CObjObject *objTbl = (CObjObject*)obj;
CObjObject *objTbl = (CObjObject *)obj;
cosmoT_clearTable(state, &objTbl->tbl);
cosmoM_free(state, CObjObject, objTbl);
break;
}
case COBJ_STREAM: {
CObjStream *objStrm = (CObjStream*)obj;
CObjStream *objStrm = (CObjStream *)obj;
close(objStrm->fd);
cosmoM_free(state, CObjStream, objStrm);
break;
}
case COBJ_TABLE: {
CObjTable *tbl = (CObjTable*)obj;
CObjTable *tbl = (CObjTable *)obj;
cosmoT_clearTable(state, &tbl->tbl);
cosmoM_free(state, CObjTable, tbl);
break;
@ -72,7 +76,7 @@ void cosmoO_free(CState *state, CObj *obj) {
break;
}
case COBJ_FUNCTION: {
CObjFunction *objFunc = (CObjFunction*)obj;
CObjFunction *objFunc = (CObjFunction *)obj;
cleanChunk(state, &objFunc->chunk);
cosmoM_free(state, CObjFunction, objFunc);
break;
@ -86,27 +90,30 @@ void cosmoO_free(CState *state, CObj *obj) {
break;
}
case COBJ_ERROR: {
CObjError *err = (CObjError*)obj;
CObjError *err = (CObjError *)obj;
cosmoM_freearray(state, CCallFrame, err->frames, err->frameCount);
cosmoM_free(state, CObjError, obj);
break;
}
case COBJ_CLOSURE: {
CObjClosure* closure = (CObjClosure*)obj;
cosmoM_freearray(state, CObjUpval*, closure->upvalues, closure->upvalueCount);
CObjClosure *closure = (CObjClosure *)obj;
cosmoM_freearray(state, CObjUpval *, closure->upvalues, closure->upvalueCount);
cosmoM_free(state, CObjClosure, closure);
break;
}
case COBJ_MAX:
default: { /* stubbed, should never happen */ }
default: { /* stubbed, should never happen */
}
}
}
bool cosmoO_equal(CState *state, CObj *obj1, CObj *obj2) {
bool cosmoO_equal(CState *state, CObj *obj1, CObj *obj2)
{
CObjObject *proto1, *proto2;
CValue eq1, eq2;
if (obj1 == obj2) // its the same reference, this compares strings for us since they're interned anyways :)
if (obj1 == obj2) // its the same reference, this compares strings for us since they're interned
// anyways :)
return true;
// its not the same type, maybe both <ref>'s have the same '__equal' metamethod in their protos?
@ -116,28 +123,29 @@ bool cosmoO_equal(CState *state, CObj *obj1, CObj *obj2) {
switch (obj1->type) {
case COBJ_STRING: {
/*
we already compared the pointers at the top of the function, this prevents the `__equal` metamethod
from being checked. If you plan on using `__equal` with strings just remove this case!
we already compared the pointers at the top of the function, this prevents the `__equal`
metamethod from being checked. If you plan on using `__equal` with strings just remove
this case!
*/
return false;
}
case COBJ_CFUNCTION: {
CObjCFunction *cfunc1 = (CObjCFunction*)obj1;
CObjCFunction *cfunc2 = (CObjCFunction*)obj2;
CObjCFunction *cfunc1 = (CObjCFunction *)obj1;
CObjCFunction *cfunc2 = (CObjCFunction *)obj2;
if (cfunc1->cfunc == cfunc2->cfunc)
return true;
goto _eqFail;
}
case COBJ_METHOD: {
CObjMethod *method1 = (CObjMethod*)obj1;
CObjMethod *method2 = (CObjMethod*)obj2;
CObjMethod *method1 = (CObjMethod *)obj1;
CObjMethod *method2 = (CObjMethod *)obj2;
if (cosmoV_equal(state, method1->func, method2->func))
return true;
goto _eqFail;
}
case COBJ_CLOSURE: {
CObjClosure *closure1 = (CObjClosure*)obj1;
CObjClosure *closure2 = (CObjClosure*)obj2;
CObjClosure *closure1 = (CObjClosure *)obj1;
CObjClosure *closure2 = (CObjClosure *)obj2;
// we just compare the function pointer
if (closure1->function == closure2->function)
return true;
@ -148,11 +156,17 @@ bool cosmoO_equal(CState *state, CObj *obj1, CObj *obj2) {
}
_eqFail:
// this is pretty expensive (bad lookup caching helps a lot), but it only all gets run if both objects have protos & both have the `__equal` metamethod defined so...
// it should stay light for the majority of cases
if ((proto1 = cosmoO_grabProto(obj1)) != NULL && (proto2 = cosmoO_grabProto(obj2)) != NULL && // make sure both protos exist
cosmoO_getIString(state, proto1, ISTRING_EQUAL, &eq1) && // grab the `__equal` metamethod from the first proto, if fail abort
cosmoO_getIString(state, proto2, ISTRING_EQUAL, &eq2) && // grab the `__equal` metamethod from the second proto, if fail abort
// this is pretty expensive (bad lookup caching helps a lot), but it only all gets run if both
// objects have protos & both have the `__equal` metamethod defined so... it should stay light
// for the majority of cases
if ((proto1 = cosmoO_grabProto(obj1)) != NULL &&
(proto2 = cosmoO_grabProto(obj2)) != NULL && // make sure both protos exist
cosmoO_getIString(
state, proto1, ISTRING_EQUAL,
&eq1) && // grab the `__equal` metamethod from the first proto, if fail abort
cosmoO_getIString(
state, proto2, ISTRING_EQUAL,
&eq2) && // grab the `__equal` metamethod from the second proto, if fail abort
cosmoV_equal(state, eq1, eq2)) { // compare the two `__equal` metamethods
// now finally, call the `__equal` metamethod (<object>, <object>)
@ -164,7 +178,8 @@ _eqFail:
// check return value and make sure it's a boolean
if (!IS_BOOLEAN(*cosmoV_getTop(state, 0))) {
cosmoV_error(state, "__equal expected to return <boolean>, got %s!", cosmoV_typeStr(*cosmoV_pop(state)));
cosmoV_error(state, "__equal expected to return <boolean>, got %s!",
cosmoV_typeStr(*cosmoV_pop(state)));
return false;
}
@ -175,39 +190,44 @@ _eqFail:
return false;
}
CObjObject *cosmoO_newObject(CState *state) {
CObjObject *obj = (CObjObject*)cosmoO_allocateBase(state, sizeof(CObjObject), COBJ_OBJECT);
CObjObject *cosmoO_newObject(CState *state)
{
CObjObject *obj = (CObjObject *)cosmoO_allocateBase(state, sizeof(CObjObject), COBJ_OBJECT);
obj->istringFlags = 0;
obj->userP = NULL; // reserved for C API
obj->userT = 0;
obj->isLocked = false;
cosmoV_pushRef(state, (CObj*)obj); // so our GC can keep track of it
cosmoV_pushRef(state, (CObj *)obj); // so our GC can keep track of it
cosmoT_initTable(state, &obj->tbl, ARRAY_START);
cosmoV_pop(state);
return obj;
}
CObjStream *cosmoO_newStream(CState *state, int fd) {
CObjStream *strm = (CObjStream*)cosmoO_allocateBase(state, sizeof(CObjStream), COBJ_STREAM);
CObjStream *cosmoO_newStream(CState *state, int fd)
{
CObjStream *strm = (CObjStream *)cosmoO_allocateBase(state, sizeof(CObjStream), COBJ_STREAM);
strm->fd = fd;
return strm;
}
CObjTable *cosmoO_newTable(CState *state) {
CObjTable *obj = (CObjTable*)cosmoO_allocateBase(state, sizeof(CObjTable), COBJ_TABLE);
CObjTable *cosmoO_newTable(CState *state)
{
CObjTable *obj = (CObjTable *)cosmoO_allocateBase(state, sizeof(CObjTable), COBJ_TABLE);
// init the table (might cause a GC event)
cosmoV_pushRef(state, (CObj*)obj); // so our GC can keep track of obj
cosmoV_pushRef(state, (CObj *)obj); // so our GC can keep track of obj
cosmoT_initTable(state, &obj->tbl, ARRAY_START);
cosmoV_pop(state);
return obj;
}
CObjFunction *cosmoO_newFunction(CState *state) {
CObjFunction *func = (CObjFunction*)cosmoO_allocateBase(state, sizeof(CObjFunction), COBJ_FUNCTION);
CObjFunction *cosmoO_newFunction(CState *state)
{
CObjFunction *func =
(CObjFunction *)cosmoO_allocateBase(state, sizeof(CObjFunction), COBJ_FUNCTION);
func->args = 0;
func->upvals = 0;
func->variadic = false;
@ -218,14 +238,17 @@ CObjFunction *cosmoO_newFunction(CState *state) {
return func;
}
CObjCFunction *cosmoO_newCFunction(CState *state, CosmoCFunction func) {
CObjCFunction *cfunc = (CObjCFunction*)cosmoO_allocateBase(state, sizeof(CObjCFunction), COBJ_CFUNCTION);
CObjCFunction *cosmoO_newCFunction(CState *state, CosmoCFunction func)
{
CObjCFunction *cfunc =
(CObjCFunction *)cosmoO_allocateBase(state, sizeof(CObjCFunction), COBJ_CFUNCTION);
cfunc->cfunc = func;
return cfunc;
}
CObjError *cosmoO_newError(CState *state, CValue err) {
CObjError *cerror = (CObjError*)cosmoO_allocateBase(state, sizeof(CObjError), COBJ_ERROR);
CObjError *cosmoO_newError(CState *state, CValue err)
{
CObjError *cerror = (CObjError *)cosmoO_allocateBase(state, sizeof(CObjError), COBJ_ERROR);
cerror->err = err;
cerror->frameCount = state->frameCount;
cerror->parserError = false;
@ -240,22 +263,25 @@ CObjError *cosmoO_newError(CState *state, CValue err) {
return cerror;
}
CObjMethod *cosmoO_newMethod(CState *state, CValue func, CObj *obj) {
CObjMethod *method = (CObjMethod*)cosmoO_allocateBase(state, sizeof(CObjMethod), COBJ_METHOD);
CObjMethod *cosmoO_newMethod(CState *state, CValue func, CObj *obj)
{
CObjMethod *method = (CObjMethod *)cosmoO_allocateBase(state, sizeof(CObjMethod), COBJ_METHOD);
method->func = func;
method->obj = obj;
return method;
}
CObjClosure *cosmoO_newClosure(CState *state, CObjFunction *func) {
CObjClosure *cosmoO_newClosure(CState *state, CObjFunction *func)
{
// initialize array of pointers
CObjUpval **upvalues = cosmoM_xmalloc(state, sizeof(CObjUpval*) * func->upvals);
CObjUpval **upvalues = cosmoM_xmalloc(state, sizeof(CObjUpval *) * func->upvals);
for (int i = 0; i < func->upvals; i++) {
upvalues[i] = NULL;
}
CObjClosure *closure = (CObjClosure*)cosmoO_allocateBase(state, sizeof(CObjClosure), COBJ_CLOSURE);
CObjClosure *closure =
(CObjClosure *)cosmoO_allocateBase(state, sizeof(CObjClosure), COBJ_CLOSURE);
closure->function = func;
closure->upvalues = upvalues;
closure->upvalueCount = func->upvals;
@ -263,8 +289,9 @@ CObjClosure *cosmoO_newClosure(CState *state, CObjFunction *func) {
return closure;
}
CObjUpval *cosmoO_newUpvalue(CState *state, CValue *val) {
CObjUpval *upval = (CObjUpval*)cosmoO_allocateBase(state, sizeof(CObjUpval), COBJ_UPVALUE);
CObjUpval *cosmoO_newUpvalue(CState *state, CValue *val)
{
CObjUpval *upval = (CObjUpval *)cosmoO_allocateBase(state, sizeof(CObjUpval), COBJ_UPVALUE);
upval->val = val;
upval->closed = cosmoV_newNil();
upval->next = NULL;
@ -272,7 +299,8 @@ CObjUpval *cosmoO_newUpvalue(CState *state, CValue *val) {
return upval;
}
CObjString *cosmoO_copyString(CState *state, const char *str, size_t length) {
CObjString *cosmoO_copyString(CState *state, const char *str, size_t length)
{
uint32_t hash = hashString(str, length);
CObjString *lookup = cosmoT_lookupString(&state->strings, str, length, hash);
@ -287,37 +315,43 @@ CObjString *cosmoO_copyString(CState *state, const char *str, size_t length) {
return cosmoO_allocateString(state, buf, length, hash);
}
// length shouldn't include the null terminator! str should be a null terminated string! (char array should also have been allocated using cosmoM_xmalloc!)
CObjString *cosmoO_takeString(CState *state, char *str, size_t length) {
// length shouldn't include the null terminator! str should be a null terminated string! (char array
// should also have been allocated using cosmoM_xmalloc!)
CObjString *cosmoO_takeString(CState *state, char *str, size_t length)
{
uint32_t hash = hashString(str, length);
CObjString *lookup = cosmoT_lookupString(&state->strings, str, length, hash);
// have we already interned this string?
if (lookup != NULL) {
cosmoM_freearray(state, char, str, length + 1); // free our passed character array, it's unneeded!
cosmoM_freearray(state, char, str,
length + 1); // free our passed character array, it's unneeded!
return lookup;
}
return cosmoO_allocateString(state, str, length, hash);
}
CObjString *cosmoO_allocateString(CState *state, const char *str, size_t sz, uint32_t hash) {
CObjString *strObj = (CObjString*)cosmoO_allocateBase(state, sizeof(CObjString), COBJ_STRING);
CObjString *cosmoO_allocateString(CState *state, const char *str, size_t sz, uint32_t hash)
{
CObjString *strObj = (CObjString *)cosmoO_allocateBase(state, sizeof(CObjString), COBJ_STRING);
strObj->isIString = false;
strObj->str = (char*)str;
strObj->str = (char *)str;
strObj->length = sz;
strObj->hash = hash;
// we push & pop the string so our GC can find it (we don't use freezeGC/unfreezeGC because we *want* a GC event to happen)
cosmoV_pushRef(state, (CObj*)strObj);
cosmoT_insert(state, &state->strings, cosmoV_newRef((CObj*)strObj));
// we push & pop the string so our GC can find it (we don't use freezeGC/unfreezeGC because we
// *want* a GC event to happen)
cosmoV_pushRef(state, (CObj *)strObj);
cosmoT_insert(state, &state->strings, cosmoV_newRef((CObj *)strObj));
cosmoV_pop(state);
return strObj;
}
CObjString *cosmoO_pushVFString(CState *state, const char *format, va_list args) {
CObjString *cosmoO_pushVFString(CState *state, const char *format, va_list args)
{
StkPtr start = state->top;
const char *end;
char c;
@ -362,19 +396,21 @@ CObjString *cosmoO_pushVFString(CState *state, const char *format, va_list args)
}
cosmoV_pushString(state, format); // push the rest of the string
cosmoV_concat(state, state->top - start); // use cosmoV_concat to concat all the strings on the stack
cosmoV_concat(state,
state->top - start); // use cosmoV_concat to concat all the strings on the stack
return cosmoV_readString(*start); // start should be state->top - 1
}
// walks the protos of obj and checks for proto
bool cosmoO_isDescendant(CObj *obj, CObjObject *proto) {
bool cosmoO_isDescendant(CObj *obj, CObjObject *proto)
{
CObjObject *curr = obj->proto;
while (curr != NULL) {
if (curr == proto)
return true; // found proto! return true
curr = ((CObj*)curr)->proto;
curr = ((CObj *)curr)->proto;
}
// we didn't find the proto
@ -382,18 +418,22 @@ bool cosmoO_isDescendant(CObj *obj, CObjObject *proto) {
}
// returns false if error thrown
bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *val, CObj *obj) {
if (!cosmoT_get(state, &proto->tbl, key, val)) { // if the field doesn't exist in the object, check the proto
if (cosmoO_getIString(state, proto, ISTRING_GETTER, val) && IS_TABLE(*val) && cosmoT_get(state, &cosmoV_readTable(*val)->tbl, key, val)) {
bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *val, CObj *obj)
{
if (!cosmoT_get(state, &proto->tbl, key,
val)) { // if the field doesn't exist in the object, check the proto
if (cosmoO_getIString(state, proto, ISTRING_GETTER, val) && IS_TABLE(*val) &&
cosmoT_get(state, &cosmoV_readTable(*val)->tbl, key, val)) {
cosmoV_pushValue(state, *val); // push function
cosmoV_pushRef(state, (CObj*)obj); // push object
cosmoV_pushRef(state, (CObj *)obj); // push object
if (cosmoV_call(state, 1, 1) != COSMOVM_OK) // call the function with the 1 argument
return false;
*val = *cosmoV_pop(state); // set value to the return value of __index
return true;
}
if (proto->_obj.proto != NULL && cosmoO_getRawObject(state, proto->_obj.proto, key, val, obj))
if (proto->_obj.proto != NULL &&
cosmoO_getRawObject(state, proto->_obj.proto, key, val, obj))
return true;
*val = cosmoV_newNil();
@ -403,7 +443,8 @@ bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *v
return true;
}
void cosmoO_setRawObject(CState *state, CObjObject *proto, CValue key, CValue val, CObj *obj) {
void cosmoO_setRawObject(CState *state, CObjObject *proto, CValue key, CValue val, CObj *obj)
{
CValue ret;
// if the object is locked, throw an error
@ -413,9 +454,10 @@ void cosmoO_setRawObject(CState *state, CObjObject *proto, CValue key, CValue va
}
// check for __setters
if (cosmoO_getIString(state, proto, ISTRING_SETTER, &ret) && IS_TABLE(ret) && cosmoT_get(state, &cosmoV_readTable(ret)->tbl, key, &ret)) {
if (cosmoO_getIString(state, proto, ISTRING_SETTER, &ret) && IS_TABLE(ret) &&
cosmoT_get(state, &cosmoV_readTable(ret)->tbl, key, &ret)) {
cosmoV_pushValue(state, ret); // push function
cosmoV_pushRef(state, (CObj*)obj); // push object
cosmoV_pushRef(state, (CObj *)obj); // push object
cosmoV_pushValue(state, val); // push new value
cosmoV_call(state, 2, 0);
return;
@ -433,39 +475,48 @@ void cosmoO_setRawObject(CState *state, CObjObject *proto, CValue key, CValue va
}
}
void cosmoO_setUserP(CObjObject *object, void *p) {
void cosmoO_setUserP(CObjObject *object, void *p)
{
object->userP = p;
}
void *cosmoO_getUserP(CObjObject *object) {
void *cosmoO_getUserP(CObjObject *object)
{
return object->userP;
}
void cosmoO_setUserI(CObjObject *object, int i) {
void cosmoO_setUserI(CObjObject *object, int i)
{
object->userI = i;
}
int cosmoO_getUserI(CObjObject *object) {
int cosmoO_getUserI(CObjObject *object)
{
return object->userI;
}
void cosmoO_setUserT(CObjObject *object, int t) {
void cosmoO_setUserT(CObjObject *object, int t)
{
object->userT = t;
}
int cosmoO_getUserT(CObjObject *object) {
int cosmoO_getUserT(CObjObject *object)
{
return object->userT;
}
void cosmoO_lock(CObjObject *object) {
void cosmoO_lock(CObjObject *object)
{
object->isLocked = true;
}
void cosmoO_unlock(CObjObject *object) {
void cosmoO_unlock(CObjObject *object)
{
object->isLocked = false;
}
bool rawgetIString(CState *state, CObjObject *object, int flag, CValue *val) {
bool rawgetIString(CState *state, CObjObject *object, int flag, CValue *val)
{
if (readFlag(object->istringFlags, flag))
return false; // it's been cached as bad
@ -478,7 +529,8 @@ bool rawgetIString(CState *state, CObjObject *object, int flag, CValue *val) {
return true; // :)
}
bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val) {
bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val)
{
CObjObject *obj = object;
do {
@ -489,10 +541,11 @@ bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val)
return false; // obj->proto was false, the istring doesn't exist in this object chain
}
bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val) {
bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val)
{
if (cosmoO_getIString(state, object, ISTRING_INDEX, val)) {
cosmoV_pushValue(state, *val); // push function
cosmoV_pushRef(state, (CObj*)object); // push object
cosmoV_pushRef(state, (CObj *)object); // push object
cosmoV_pushValue(state, key); // push key
if (cosmoV_call(state, 2, 1) != COSMOVM_OK) // call the function with the 2 arguments
return false;
@ -505,12 +558,13 @@ bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *v
return false;
}
bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue val) {
bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue val)
{
CValue ret; // return value for cosmoO_getIString
if (cosmoO_getIString(state, object, ISTRING_NEWINDEX, &ret)) {
cosmoV_pushValue(state, ret); // push function
cosmoV_pushRef(state, (CObj*)object); // push object
cosmoV_pushRef(state, (CObj *)object); // push object
cosmoV_pushValue(state, key); // push key & value pair
cosmoV_pushValue(state, val);
return cosmoV_call(state, 3, 0) == COSMOVM_OK;
@ -521,82 +575,88 @@ bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue
return false;
}
CObjString *cosmoO_toString(CState *state, CObj *obj) {
CObjString *cosmoO_toString(CState *state, CObj *obj)
{
CObjObject *protoObject = cosmoO_grabProto(obj);
CValue res;
// use user-defined __tostring
if (protoObject != NULL && cosmoO_getIString(state, protoObject, ISTRING_TOSTRING, &res)) {
cosmoV_pushValue(state, res);
cosmoV_pushRef(state, (CObj*)obj);
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) != COSMOVM_OK)
return cosmoO_copyString(state, "<err>", 5);
// make sure the __tostring function returned a string
StkPtr ret = cosmoV_getTop(state, 0);
if (!IS_STRING(*ret)) {
cosmoV_error(state, "__tostring expected to return <string>, got %s!", cosmoV_typeStr(*ret));
cosmoV_error(state, "__tostring expected to return <string>, got %s!",
cosmoV_typeStr(*ret));
return cosmoO_copyString(state, "<err>", 5);
}
// return string
cosmoV_pop(state);
return (CObjString*)cosmoV_readRef(*ret);
return (CObjString *)cosmoV_readRef(*ret);
}
switch (obj->type) {
case COBJ_STRING: {
return (CObjString*)obj;
return (CObjString *)obj;
}
case COBJ_CLOSURE: { // should be transparent to the user imo
CObjClosure *closure = (CObjClosure*)obj;
return cosmoO_toString(state, (CObj*)closure->function);
CObjClosure *closure = (CObjClosure *)obj;
return cosmoO_toString(state, (CObj *)closure->function);
}
case COBJ_FUNCTION: {
CObjFunction *func = (CObjFunction*)obj;
return func->name != NULL ? func->name : cosmoO_copyString(state, UNNAMEDCHUNK, strlen(UNNAMEDCHUNK));
CObjFunction *func = (CObjFunction *)obj;
return func->name != NULL ? func->name
: cosmoO_copyString(state, UNNAMEDCHUNK, strlen(UNNAMEDCHUNK));
}
case COBJ_CFUNCTION: {
CObjCFunction *cfunc = (CObjCFunction*)obj;
CObjCFunction *cfunc = (CObjCFunction *)obj;
char buf[64];
int sz = sprintf(buf, "<c function> %p", (void*)cfunc->cfunc) + 1; // +1 for the null character
int sz =
sprintf(buf, "<c function> %p", (void *)cfunc->cfunc) + 1; // +1 for the null character
return cosmoO_copyString(state, buf, sz);
}
case COBJ_OBJECT: {
char buf[64];
int sz = sprintf(buf, "<obj> %p", (void*)obj) + 1; // +1 for the null character
int sz = sprintf(buf, "<obj> %p", (void *)obj) + 1; // +1 for the null character
return cosmoO_copyString(state, buf, sz);
}
case COBJ_ERROR: {
CObjError *err = (CObjError*)obj;
CObjError *err = (CObjError *)obj;
return cosmoV_toString(state, err->err);
}
case COBJ_TABLE: {
char buf[64];
int sz = sprintf(buf, "<tbl> %p", (void*)obj) + 1; // +1 for the null character
int sz = sprintf(buf, "<tbl> %p", (void *)obj) + 1; // +1 for the null character
return cosmoO_copyString(state, buf, sz);
}
default: {
char buf[64];
int sz = sprintf(buf, "<unkn obj> %p", (void*)obj) + 1; // +1 for the null character
int sz = sprintf(buf, "<unkn obj> %p", (void *)obj) + 1; // +1 for the null character
return cosmoO_copyString(state, buf, sz);
}
}
}
cosmo_Number cosmoO_toNumber(CState *state, CObj *obj) {
cosmo_Number cosmoO_toNumber(CState *state, CObj *obj)
{
CObjObject *proto = cosmoO_grabProto(obj);
CValue res;
if (proto != NULL && cosmoO_getIString(state, proto, ISTRING_TONUMBER, &res)) {
cosmoV_pushValue(state, res);
cosmoV_pushRef(state, (CObj*)obj);
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) != COSMOVM_OK) // call res, expect 1 return val of <number>
return 0;
StkPtr temp = cosmoV_getTop(state, 0);
if (!IS_NUMBER(*temp)) {
cosmoV_error(state, "__tonumber expected to return <number>, got %s!", cosmoV_typeStr(*temp));
cosmoV_error(state, "__tonumber expected to return <number>, got %s!",
cosmoV_typeStr(*temp));
return 0;
}
@ -607,7 +667,7 @@ cosmo_Number cosmoO_toNumber(CState *state, CObj *obj) {
switch (obj->type) {
case COBJ_STRING: {
CObjString *str = (CObjString*)obj;
CObjString *str = (CObjString *)obj;
return strtod(str->str, NULL);
}
default: // maybe in the future throw an error?
@ -615,19 +675,22 @@ cosmo_Number cosmoO_toNumber(CState *state, CObj *obj) {
}
}
int cosmoO_count(CState *state, CObj *obj) {
int cosmoO_count(CState *state, CObj *obj)
{
CObjObject *proto = cosmoO_grabProto(obj);
CValue res;
if (proto != NULL && cosmoO_getIString(state, proto, ISTRING_COUNT, &res)) {
cosmoV_pushValue(state, res);
cosmoV_pushRef(state, (CObj*)obj);
if (cosmoV_call(state, 1, 1) != COSMOVM_OK) // call res, we expect 1 return value of type <number>
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) !=
COSMOVM_OK) // call res, we expect 1 return value of type <number>
return 0;
StkPtr ret = cosmoV_getTop(state, 0);
if (!IS_NUMBER(*ret)) {
cosmoV_error(state, "__count expected to return <number>, got %s!", cosmoV_typeStr(*ret));
cosmoV_error(state, "__count expected to return <number>, got %s!",
cosmoV_typeStr(*ret));
return 0;
}
@ -638,11 +701,11 @@ int cosmoO_count(CState *state, CObj *obj) {
switch (obj->type) {
case COBJ_TABLE: { // returns the # of entries in the hash table
CObjTable *tbl = (CObjTable*)obj;
CObjTable *tbl = (CObjTable *)obj;
return cosmoT_count(&tbl->tbl);
}
case COBJ_STRING: { // returns the length of the string
CObjString *str = (CObjString*)obj;
CObjString *str = (CObjString *)obj;
return str->length;
}
default:
@ -651,24 +714,25 @@ int cosmoO_count(CState *state, CObj *obj) {
}
}
void printObject(CObj *o) {
void printObject(CObj *o)
{
switch (o->type) {
case COBJ_STRING: {
CObjString *objStr = (CObjString*)o;
CObjString *objStr = (CObjString *)o;
printf("%.*s", objStr->length, objStr->str);
break;
}
case COBJ_OBJECT: {
printf("<obj> %p", (void*)o);
printf("<obj> %p", (void *)o);
break;
}
case COBJ_TABLE: {
CObjTable *tbl = (CObjTable*)o;
printf("<tbl> %p", (void*)tbl);
CObjTable *tbl = (CObjTable *)o;
printf("<tbl> %p", (void *)tbl);
break;
}
case COBJ_FUNCTION: {
CObjFunction *objFunc = (CObjFunction*)o;
CObjFunction *objFunc = (CObjFunction *)o;
if (objFunc->name != NULL)
printf("<function> %.*s", objFunc->name->length, objFunc->name->str);
else
@ -676,49 +740,58 @@ void printObject(CObj *o) {
break;
}
case COBJ_CFUNCTION: {
CObjCFunction *objCFunc = (CObjCFunction*)o;
printf("<c function> %p", (void*)objCFunc->cfunc);
CObjCFunction *objCFunc = (CObjCFunction *)o;
printf("<c function> %p", (void *)objCFunc->cfunc);
break;
}
case COBJ_ERROR: {
CObjError *err = (CObjError*)o;
printf("<error> %p -> ", (void*)o);
CObjError *err = (CObjError *)o;
printf("<error> %p -> ", (void *)o);
printValue(err->err);
break;
}
case COBJ_METHOD: {
CObjMethod *method = (CObjMethod*)o;
printf("<method> %p -> ", (void*)method);
CObjMethod *method = (CObjMethod *)o;
printf("<method> %p -> ", (void *)method);
printValue(method->func);
break;
}
case COBJ_CLOSURE: {
CObjClosure *closure = (CObjClosure*)o;
printf("<closure> %p -> ", (void*)closure);
printObject((CObj*)closure->function); // just print the function
CObjClosure *closure = (CObjClosure *)o;
printf("<closure> %p -> ", (void *)closure);
printObject((CObj *)closure->function); // just print the function
break;
}
case COBJ_UPVALUE: {
CObjUpval *upval = (CObjUpval*)o;
printf("<upvalue> %p -> ", (void*)upval->val);
CObjUpval *upval = (CObjUpval *)o;
printf("<upvalue> %p -> ", (void *)upval->val);
printValue(*upval->val);
break;
}
default:
printf("<unkn obj %p>", (void*)o);
printf("<unkn obj %p>", (void *)o);
}
}
const char *cosmoO_typeStr(CObj* obj) {
const char *cosmoO_typeStr(CObj *obj)
{
switch (obj->type) {
case COBJ_STRING: return "<string>";
case COBJ_OBJECT: return "<object>";
case COBJ_TABLE: return "<table>";
case COBJ_FUNCTION: return "<function>";
case COBJ_CFUNCTION: return "<c function>";
case COBJ_METHOD: return "<method>";
case COBJ_CLOSURE: return "<closure>";
case COBJ_UPVALUE: return "<upvalue>";
case COBJ_STRING:
return "<string>";
case COBJ_OBJECT:
return "<object>";
case COBJ_TABLE:
return "<table>";
case COBJ_FUNCTION:
return "<function>";
case COBJ_CFUNCTION:
return "<c function>";
case COBJ_METHOD:
return "<method>";
case COBJ_CLOSURE:
return "<closure>";
case COBJ_UPVALUE:
return "<upvalue>";
default:
return "<unkn obj>"; // TODO: maybe panic? could be a malformed object :eyes:

95
src/cobj.h
View File

@ -3,7 +3,8 @@
#include "cosmo.h"
typedef enum CObjType {
typedef enum CObjType
{
COBJ_STRING,
COBJ_OBJECT,
COBJ_TABLE,
@ -18,10 +19,10 @@ typedef enum CObjType {
COBJ_MAX
} CObjType;
#include "cstate.h"
#include "cchunk.h"
#include "cvalue.h"
#include "cstate.h"
#include "ctable.h"
#include "cvalue.h"
#define CommonHeader CObj _obj
#define readFlag(x, flag) (x & (1u << flag))
@ -29,7 +30,8 @@ typedef enum CObjType {
typedef int (*CosmoCFunction)(CState *state, int argCount, CValue *args);
struct CObj {
struct CObj
{
struct CObj *next;
struct CObj *nextRoot; // for the root linked list
struct CObjObject *proto; // protoobject, describes the behavior of the object
@ -37,7 +39,8 @@ struct CObj {
bool isMarked; // for the GC
};
struct CObjString {
struct CObjString
{
CommonHeader; // "is a" CObj
char *str; // NULL termincated string
uint32_t hash; // for hashtable lookup
@ -45,12 +48,14 @@ struct CObjString {
bool isIString;
};
struct CObjStream {
struct CObjStream
{
CommonHeader; // "is a" CObj
int fd; // handle to file descriptor, on POSIX compliant OSes this can also be a socket :pog:
};
struct CObjError {
struct CObjError
{
CommonHeader; // "is a" CObj
CValue err; // error string
CCallFrame *frames;
@ -59,11 +64,14 @@ struct CObjError {
bool parserError; // if true, cosmoV_printError will format the error to the lexer
};
struct CObjObject {
struct CObjObject
{
CommonHeader; // "is a" CObj
CTable tbl;
cosmo_Flag istringFlags; // enables us to have a much faster lookup for reserved IStrings (like __init, __index, etc.)
union { // userdata (NULL by default)
cosmo_Flag istringFlags; // enables us to have a much faster lookup for reserved IStrings (like
// __init, __index, etc.)
union
{ // userdata (NULL by default)
void *userP;
int userI;
};
@ -71,12 +79,14 @@ struct CObjObject {
bool isLocked;
};
struct CObjTable { // table, a wrapper for CTable
struct CObjTable
{ // table, a wrapper for CTable
CommonHeader; // "is a" CObj
CTable tbl;
};
struct CObjFunction {
struct CObjFunction
{
CommonHeader; // "is a" CObj
CChunk chunk;
CObjString *name;
@ -86,25 +96,29 @@ struct CObjFunction {
bool variadic;
};
struct CObjCFunction {
struct CObjCFunction
{
CommonHeader; // "is a" CObj
CosmoCFunction cfunc;
};
struct CObjClosure {
struct CObjClosure
{
CommonHeader; // "is a" CObj
CObjFunction *function;
CObjUpval **upvalues;
int upvalueCount;
};
struct CObjMethod {
struct CObjMethod
{
CommonHeader; // "is a " CObj
CValue func;
CObj *obj; // obj this method is bound too
};
struct CObjUpval {
struct CObjUpval
{
CommonHeader; // "is a" CObj
CValue closed;
CValue *val;
@ -122,29 +136,31 @@ struct CObjUpval {
#define IS_METHOD(x) isObjType(x, COBJ_METHOD)
#define IS_CLOSURE(x) isObjType(x, COBJ_CLOSURE)
#define cosmoV_readString(x) ((CObjString*)cosmoV_readRef(x))
#define cosmoV_readCString(x) (((CObjString*)cosmoV_readRef(x))->str)
#define cosmoV_readFD(x) (((CObjStream*)cosmoV_readRef(x))->fd)
#define cosmoV_readObject(x) ((CObjObject*)cosmoV_readRef(x))
#define cosmoV_readTable(x) ((CObjTable*)cosmoV_readRef(x))
#define cosmoV_readFunction(x) ((CObjFunction*)cosmoV_readRef(x))
#define cosmoV_readCFunction(x) (((CObjCFunction*)cosmoV_readRef(x))->cfunc)
#define cosmoV_readMethod(x) ((CObjMethod*)cosmoV_readRef(x))
#define cosmoV_readClosure(x) ((CObjClosure*)cosmoV_readRef(x))
#define cosmoV_readString(x) ((CObjString *)cosmoV_readRef(x))
#define cosmoV_readCString(x) (((CObjString *)cosmoV_readRef(x))->str)
#define cosmoV_readFD(x) (((CObjStream *)cosmoV_readRef(x))->fd)
#define cosmoV_readObject(x) ((CObjObject *)cosmoV_readRef(x))
#define cosmoV_readTable(x) ((CObjTable *)cosmoV_readRef(x))
#define cosmoV_readFunction(x) ((CObjFunction *)cosmoV_readRef(x))
#define cosmoV_readCFunction(x) (((CObjCFunction *)cosmoV_readRef(x))->cfunc)
#define cosmoV_readMethod(x) ((CObjMethod *)cosmoV_readRef(x))
#define cosmoV_readClosure(x) ((CObjClosure *)cosmoV_readRef(x))
#define cosmoO_readCString(x) ((CObjString*)x)->str
#define cosmoO_readCString(x) ((CObjString *)x)->str
static inline bool isObjType(CValue val, CObjType type) {
static inline bool isObjType(CValue val, CObjType type)
{
return IS_REF(val) && cosmoV_readRef(val)->type == type;
}
// just protects against macro expansion
static inline bool IS_CALLABLE(CValue val) {
static inline bool IS_CALLABLE(CValue val)
{
return IS_CLOSURE(val) || IS_CFUNCTION(val) || IS_METHOD(val);
}
void cosmoO_free(CState *state, CObj* obj);
bool cosmoO_equal(CState *state, CObj* obj1, CObj* obj2);
void cosmoO_free(CState *state, CObj *obj);
bool cosmoO_equal(CState *state, CObj *obj1, CObj *obj2);
// walks the protos of obj and checks for proto
bool cosmoO_isDescendant(CObj *obj, CObjObject *proto);
@ -160,8 +176,9 @@ CObjClosure *cosmoO_newClosure(CState *state, CObjFunction *func);
CObjUpval *cosmoO_newUpvalue(CState *state, CValue *val);
// grabs the base proto of the CObj* (if CObj is a CObjObject, that is returned)
static inline CObjObject *cosmoO_grabProto(CObj *obj) {
return obj->type == COBJ_OBJECT ? (CObjObject*)obj : obj->proto;
static inline CObjObject *cosmoO_grabProto(CObj *obj)
{
return obj->type == COBJ_OBJECT ? (CObjObject *)obj : obj->proto;
}
bool cosmoO_getRawObject(CState *state, CObjObject *proto, CValue key, CValue *val, CObj *obj);
@ -169,11 +186,13 @@ void cosmoO_setRawObject(CState *state, CObjObject *proto, CValue key, CValue va
bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val);
bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue val);
// sets the user-defined pointer, if a user-define integer is already defined it will be over written
// sets the user-defined pointer, if a user-define integer is already defined it will be over
// written
void cosmoO_setUserP(CObjObject *object, void *p);
// gets the user-defined pointer
void *cosmoO_getUserP(CObjObject *object);
// sets the user-defined integer, if a user-define pointer is already defined it will be over written
// sets the user-defined integer, if a user-define pointer is already defined it will be over
// written
void cosmoO_setUserI(CObjObject *object, int i);
// gets the user-defined integer
int cosmoO_getUserI(CObjObject *object);
@ -189,10 +208,12 @@ void cosmoO_unlock(CObjObject *object);
// internal string
bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val);
// copies the *str buffer to the heap and returns a CObjString struct which is also on the heap (length should not include the null terminator)
// copies the *str buffer to the heap and returns a CObjString struct which is also on the heap
// (length should not include the null terminator)
CObjString *cosmoO_copyString(CState *state, const char *str, size_t length);
// length shouldn't include the null terminator! str should be a null terminated string! (char array should also have been allocated using cosmoM_xmalloc!)
// length shouldn't include the null terminator! str should be a null terminated string! (char array
// should also have been allocated using cosmoM_xmalloc!)
CObjString *cosmoO_takeString(CState *state, char *str, size_t length);
// allocates a CObjStruct pointing directly to *str
@ -209,7 +230,7 @@ CObjString *cosmoO_allocateString(CState *state, const char *str, size_t length,
CObjString *cosmoO_pushVFString(CState *state, const char *format, va_list args);
COSMO_API void printObject(CObj *o);
const char *cosmoO_typeStr(CObj* obj);
const char *cosmoO_typeStr(CObj *obj);
CObjString *cosmoO_toString(CState *state, CObj *obj);
cosmo_Number cosmoO_toNumber(CState *state, CObj *obj);

3
src/coperators.h
View File

@ -5,7 +5,8 @@
// instructions
typedef enum {
typedef enum
{
// STACK/STATE MANIPULATION
OP_LOADCONST, // pushes const[uint8_t] to the stack
OP_SETGLOBAL, // pops and sets global[const[uint16_t]]

17
src/cosmo.h
View File

@ -1,21 +1,21 @@
#ifndef COSMOMAIN_H
#define COSMOMAIN_H
#include <stdlib.h>
#include <assert.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdbool.h>
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
/*
SAFE_STACK:
if undefined, the stack will not be checked for stack overflows. This may improve performance, however
this will produce undefined behavior as you reach the stack limit (and may cause a seg fault!). It is recommended to keep this enabled.
if undefined, the stack will not be checked for stack overflows. This may improve
performance, however this will produce undefined behavior as you reach the stack limit (and may
cause a seg fault!). It is recommended to keep this enabled.
*/
#define SAFE_STACK
//#define NAN_BOXXED
// #define NAN_BOXXED
// forward declare *most* stuff so our headers are cleaner
typedef struct CState CState;
@ -54,7 +54,6 @@ typedef uint8_t INSTRUCTION;
#define UNNAMEDCHUNK "_main"
#define COSMOASSERT(x) assert(x)
#define CERROR(err) \
printf("%s : %s\n", "[ERROR]", err)
#define CERROR(err) printf("%s : %s\n", "[ERROR]", err)
#endif

504
src/cparse.c
View File

File diff suppressed because it is too large Load Diff

7
src/cparse.h
View File

@ -1,10 +1,11 @@
#ifndef CPARSE_H
#define CPARSE_H
#include "cosmo.h"
#include "clex.h"
#include "cosmo.h"
// compiles source into CChunk, if NULL is returned, a syntaxical error has occurred and pushed onto the stack
CObjFunction* cosmoP_compileString(CState *state, const char *source, const char *module);
// compiles source into CChunk, if NULL is returned, a syntaxical error has occurred and pushed onto
// the stack
CObjFunction *cosmoP_compileString(CState *state, const char *source, const char *module);
#endif

25
src/cstate.c
View File

@ -1,12 +1,14 @@
#include "cstate.h"
#include "cchunk.h"
#include "cmem.h"
#include "cobj.h"
#include "cvm.h"
#include "cmem.h"
#include <string.h>
CState *cosmoV_newState() {
CState *cosmoV_newState()
{
// we use C's malloc because we don't want to trigger a GC with an invalid state
CState *state = malloc(sizeof(CState));
@ -73,7 +75,8 @@ CState *cosmoV_newState() {
return state;
}
void cosmoV_freeState(CState *state) {
void cosmoV_freeState(CState *state)
{
#ifdef GC_DEBUG
printf("state %p is being free'd!\n", state);
#endif
@ -95,20 +98,21 @@ void cosmoV_freeState(CState *state) {
cosmoT_clearTable(state, &state->strings);
// free our gray stack & finally free the state structure
cosmoM_freearray(state, CObj*, state->grayStack.array, state->grayStack.capacity);
cosmoM_freearray(state, CObj *, state->grayStack.array, state->grayStack.capacity);
// TODO: yeah idk, it looks like im missing 520 bytes somewhere? i'll look into it later
/*#ifdef GC_DEBUG
/*#ifdef GC_DEBUG
if (state->allocatedBytes != sizeof(CState)) {
printf("state->allocatedBytes doesn't match expected value (%lu), got %lu!", sizeof(CState), state->allocatedBytes);
exit(0);
printf("state->allocatedBytes doesn't match expected value (%lu), got %lu!",
sizeof(CState), state->allocatedBytes); exit(0);
}
#endif*/
#endif*/
free(state);
}
// expects 2*pairs values on the stack, each pair should consist of 1 key and 1 value
void cosmoV_register(CState *state, int pairs) {
void cosmoV_register(CState *state, int pairs)
{
for (int i = 0; i < pairs; i++) {
StkPtr key = cosmoV_getTop(state, 1);
StkPtr val = cosmoV_getTop(state, 0);
@ -120,7 +124,8 @@ void cosmoV_register(CState *state, int pairs) {
}
}
void cosmoV_printStack(CState *state) {
void cosmoV_printStack(CState *state)
{
printf("==== [[ stack dump ]] ====\n");
for (CValue *top = state->top - 1; top >= state->stack; top--) {
printf("%d: ", (int)(top - state->stack));

30
src/cstate.h
View File

@ -1,18 +1,20 @@
#ifndef CSTATE_H
#define CSTATE_H
#include "cosmo.h"
#include "cobj.h"
#include "cvalue.h"
#include "cosmo.h"
#include "ctable.h"
#include "cvalue.h"
struct CCallFrame {
struct CCallFrame
{
CObjClosure *closure;
INSTRUCTION *pc;
CValue* base;
CValue *base;
};
typedef enum IStringEnum {
typedef enum IStringEnum
{
ISTRING_INIT, // __init
ISTRING_TOSTRING, // __tostring
ISTRING_TONUMBER, // __tonumber
@ -25,24 +27,29 @@ typedef enum IStringEnum {
ISTRING_ITER, // __iter
ISTRING_NEXT, // __next
ISTRING_RESERVED, // __reserved
ISTRING_MAX // if this becomes greater than 33, we are out of space in cosmo_Flag. you'll have to change that to uint64_t
ISTRING_MAX // if this becomes greater than 33, we are out of space in cosmo_Flag. you'll have
// to change that to uint64_t
} IStringEnum;
typedef struct ArrayCObj {
typedef struct ArrayCObj
{
CObj **array;
int count;
int capacity;
} ArrayCObj;
struct CState {
struct CState
{
bool panic;
int freezeGC; // when > 0, GC events will be ignored (for internal use)
int frameCount;
CObjError *error; // NULL, unless panic is true
CObj *objects; // tracks all of our allocated objects
CObj *userRoots; // user definable roots, this holds CObjs that should be considered "roots", lets the VM know you are holding a reference to a CObj in your code
ArrayCObj grayStack; // keeps track of which objects *haven't yet* been traversed in our GC, but *have been* found
CObj *userRoots; // user definable roots, this holds CObjs that should be considered "roots",
// lets the VM know you are holding a reference to a CObj in your code
ArrayCObj grayStack; // keeps track of which objects *haven't yet* been traversed in our GC, but
// *have been* found
size_t allocatedBytes;
size_t nextGC; // when allocatedBytes reaches this threshhold, trigger a GC event
@ -52,7 +59,8 @@ struct CState {
CValue *top; // top of the stack
CObjObject *protoObjects[COBJ_MAX]; // proto object for each COBJ type [NULL = no default proto]
CObjString *iStrings[ISTRING_MAX]; // strings used internally by the VM, eg. __init, __index & friends
CObjString
*iStrings[ISTRING_MAX]; // strings used internally by the VM, eg. __init, __index & friends
CCallFrame callFrame[FRAME_MAX]; // call frames
CValue stack[STACK_MAX]; // stack
};

97
src/ctable.c
View File

@ -1,7 +1,8 @@
#include "ctable.h"
#include "cmem.h"
#include "cvalue.h"
#include "cobj.h"
#include "cvalue.h"
#include <string.h>
@ -10,12 +11,15 @@
#define MIN_TABLE_CAPACITY ARRAY_START
// bit-twiddling hacks, gets the next power of 2
unsigned int nextPow2(unsigned int x) {
if (x <= ARRAY_START - 1) return ARRAY_START; // sanity check
unsigned int nextPow2(unsigned int x)
{
if (x <= ARRAY_START - 1)
return ARRAY_START; // sanity check
x--;
int power = 2;
while (x >>= 1) power <<= 1;
while (x >>= 1)
power <<= 1;
if (power < ARRAY_START)
return ARRAY_START;
@ -23,7 +27,8 @@ unsigned int nextPow2(unsigned int x) {
return power;
}
void cosmoT_initTable(CState *state, CTable *tbl, int startCap) {
void cosmoT_initTable(CState *state, CTable *tbl, int startCap)
{
startCap = startCap != 0 ? startCap : ARRAY_START; // sanity check :P
tbl->capacityMask = startCap - 1;
@ -39,7 +44,8 @@ void cosmoT_initTable(CState *state, CTable *tbl, int startCap) {
}
}
void cosmoT_addTable(CState *state, CTable *from, CTable *to) {
void cosmoT_addTable(CState *state, CTable *from, CTable *to)
{
int cap = from->capacityMask + 1;
for (int i = 0; i < cap; i++) {
CTableEntry *entry = &from->table[i];
@ -51,32 +57,36 @@ void cosmoT_addTable(CState *state, CTable *from, CTable *to) {
}
}
void cosmoT_clearTable(CState *state, CTable *tbl) {
void cosmoT_clearTable(CState *state, CTable *tbl)
{
cosmoM_freearray(state, CTableEntry, tbl->table, (tbl->capacityMask + 1));
}
uint32_t getObjectHash(CObj *obj) {
switch(obj->type) {
uint32_t getObjectHash(CObj *obj)
{
switch (obj->type) {
case COBJ_STRING:
return ((CObjString*)obj)->hash;
return ((CObjString *)obj)->hash;
default:
return (uint32_t)obj; // just "hash" the pointer
}
}
uint32_t getValueHash(CValue *val) {
uint32_t getValueHash(CValue *val)
{
switch (GET_TYPE(*val)) {
case COSMO_TREF:
return getObjectHash(cosmoV_readRef(*val));
case COSMO_TNUMBER: {
uint32_t buf[sizeof(cosmo_Number)/sizeof(uint32_t)];
uint32_t buf[sizeof(cosmo_Number) / sizeof(uint32_t)];
cosmo_Number num = cosmoV_readNumber(*val);
if (num == 0)
return 0;
memcpy(buf, &num, sizeof(buf));
for (size_t i = 0; i < sizeof(cosmo_Number)/sizeof(uint32_t); i++) buf[0] += buf[i];
for (size_t i = 0; i < sizeof(cosmo_Number) / sizeof(uint32_t); i++)
buf[0] += buf[i];
return buf[0];
}
// TODO: add support for other types
@ -86,9 +96,11 @@ uint32_t getValueHash(CValue *val) {
}
// mask should always be (capacity - 1)
static CTableEntry *findEntry(CState *state, CTableEntry *entries, int mask, CValue key) {
static CTableEntry *findEntry(CState *state, CTableEntry *entries, int mask, CValue key)
{
uint32_t hash = getValueHash(&key);
uint32_t indx = hash & mask; // since we know the capacity will *always* be a power of 2, we can use bitwise & to perform a MUCH faster mod operation
uint32_t indx = hash & mask; // since we know the capacity will *always* be a power of 2, we can
// use bitwise & to perform a MUCH faster mod operation
CTableEntry *tomb = NULL;
// keep looking for an open slot in the entries array
@ -112,7 +124,8 @@ static CTableEntry *findEntry(CState *state, CTableEntry *entries, int mask, CVa
}
}
static void resizeTbl(CState *state, CTable *tbl, int newCapacity, bool canShrink) {
static void resizeTbl(CState *state, CTable *tbl, int newCapacity, bool canShrink)
{
if (canShrink && cosmoT_checkShrink(state, tbl))
return;
@ -122,7 +135,8 @@ static void resizeTbl(CState *state, CTable *tbl, int newCapacity, bool canShrin
cosmoM_checkGarbage(state, size); // if this allocation would cause a GC, run the GC
if (tbl->count < cachedCount) // the GC removed some objects from this table and resized it, ignore our resize event!
if (tbl->count < cachedCount) // the GC removed some objects from this table and resized it,
// ignore our resize event!
return;
CTableEntry *entries = cosmoM_xmalloc(state, size);
@ -157,10 +171,14 @@ static void resizeTbl(CState *state, CTable *tbl, int newCapacity, bool canShrin
tbl->tombstones = 0;
}
bool cosmoT_checkShrink(CState *state, CTable *tbl) {
bool cosmoT_checkShrink(CState *state, CTable *tbl)
{
// if count > 8 and active entries < tombstones
if (tbl->count > MIN_TABLE_CAPACITY && (tbl->count - tbl->tombstones < tbl->tombstones || tbl->tombstones > 50)) { // TODO: 50 should be a threshhold
resizeTbl(state, tbl, nextPow2(tbl->count - tbl->tombstones) * GROW_FACTOR, false); // shrink based on active entries to the next pow of 2
if (tbl->count > MIN_TABLE_CAPACITY &&
(tbl->count - tbl->tombstones < tbl->tombstones ||
tbl->tombstones > 50)) { // TODO: 50 should be a threshhold
resizeTbl(state, tbl, nextPow2(tbl->count - tbl->tombstones) * GROW_FACTOR,
false); // shrink based on active entries to the next pow of 2
return true;
}
@ -168,7 +186,8 @@ bool cosmoT_checkShrink(CState *state, CTable *tbl) {
}
// returns a pointer to the allocated value
COSMO_API CValue* cosmoT_insert(CState *state, CTable *tbl, CValue key) {
COSMO_API CValue *cosmoT_insert(CState *state, CTable *tbl, CValue key)
{
// make sure we have enough space allocated
int cap = tbl->capacityMask + 1;
if (tbl->count + 1 > (int)(cap * MAX_TABLE_FILL)) {
@ -178,7 +197,8 @@ COSMO_API CValue* cosmoT_insert(CState *state, CTable *tbl, CValue key) {
}
// insert into the table
CTableEntry *entry = findEntry(state, tbl->table, tbl->capacityMask, key); // -1 for our capacity mask
CTableEntry *entry =
findEntry(state, tbl->table, tbl->capacityMask, key); // -1 for our capacity mask
if (IS_NIL(entry->key)) {
if (IS_NIL(entry->val)) // is it empty?
@ -191,7 +211,8 @@ COSMO_API CValue* cosmoT_insert(CState *state, CTable *tbl, CValue key) {
return &entry->val;
}
bool cosmoT_get(CState *state, CTable *tbl, CValue key, CValue *val) {
bool cosmoT_get(CState *state, CTable *tbl, CValue key, CValue *val)
{
// sanity check
if (tbl->count == 0) {
*val = cosmoV_newNil();
@ -205,8 +226,10 @@ bool cosmoT_get(CState *state, CTable *tbl, CValue key, CValue *val) {
return !(IS_NIL(entry->key));
}
bool cosmoT_remove(CState* state, CTable *tbl, CValue key) {
if (tbl->count == 0) return 0; // sanity check
bool cosmoT_remove(CState *state, CTable *tbl, CValue key)
{
if (tbl->count == 0)
return 0; // sanity check
CTableEntry *entry = findEntry(state, tbl->table, tbl->capacityMask, key);
if (IS_NIL(entry->key)) // sanity check
@ -214,20 +237,26 @@ bool cosmoT_remove(CState* state, CTable *tbl, CValue key) {
// crafts tombstone
entry->key = cosmoV_newNil(); // this has to be nil
entry->val = cosmoV_newBoolean(false); // doesn't really matter what this is, as long as it isn't nil
entry->val =
cosmoV_newBoolean(false); // doesn't really matter what this is, as long as it isn't nil
tbl->tombstones++;
return true;
}
// returns the active entry count
COSMO_API int cosmoT_count(CTable *tbl) {
COSMO_API int cosmoT_count(CTable *tbl)
{
return tbl->count - tbl->tombstones;
}
CObjString *cosmoT_lookupString(CTable *tbl, const char *str, int length, uint32_t hash) {
if (tbl->count == 0) return 0; // sanity check
uint32_t indx = hash & tbl->capacityMask; // since we know the capacity will *always* be a power of 2, we can use bitwise & to perform a MUCH faster mod operation
CObjString *cosmoT_lookupString(CTable *tbl, const char *str, int length, uint32_t hash)
{
if (tbl->count == 0)
return 0; // sanity check
uint32_t indx =
hash & tbl->capacityMask; // since we know the capacity will *always* be a power of 2, we
// can use bitwise & to perform a MUCH faster mod operation
// keep looking for an open slot in the entries array
while (true) {
@ -236,9 +265,10 @@ CObjString *cosmoT_lookupString(CTable *tbl, const char *str, int length, uint32
// check if it's an empty slot (meaning we dont have it in the table)
if (IS_NIL(entry->key) && IS_NIL(entry->val)) {
return NULL;
} else if (IS_STRING(entry->key) && cosmoV_readString(entry->key)->length == length && memcmp(cosmoV_readString(entry->key)->str, str, length) == 0) {
} else if (IS_STRING(entry->key) && cosmoV_readString(entry->key)->length == length &&
memcmp(cosmoV_readString(entry->key)->str, str, length) == 0) {
// it's a match!
return (CObjString*)cosmoV_readRef(entry->key);
return (CObjString *)cosmoV_readRef(entry->key);
}
indx = (indx + 1) & tbl->capacityMask; // fast mod here too
@ -246,7 +276,8 @@ CObjString *cosmoT_lookupString(CTable *tbl, const char *str, int length, uint32
}
// for debugging purposes
void cosmoT_printTable(CTable *tbl, const char *name) {
void cosmoT_printTable(CTable *tbl, const char *name)
{
printf("==== [[%s]] ====\n", name);
int cap = tbl->capacityMask + 1;
for (int i = 0; i < cap; i++) {

9
src/ctable.h
View File

@ -1,17 +1,20 @@
#ifndef CTABLE_H
#define CTABLE_H
/* TODO: rewrite this table implementation. compared to other languages (including python!) this table is verrryyyy slow */
/* TODO: rewrite this table implementation. compared to other languages (including python!) this
* table is verrryyyy slow */
#include "cosmo.h"
#include "cvalue.h"
typedef struct CTableEntry {
typedef struct CTableEntry
{
CValue key;
CValue val;
} CTableEntry;
typedef struct CTable {
typedef struct CTable
{
int count;
int capacityMask; // +1 to get the capacity
int tombstones;

64
src/cvalue.c
View File

@ -1,48 +1,59 @@
#include "cosmo.h"
#include "cmem.h"
#include "cvalue.h"
#include "cobj.h"
void initValArray(CState *state, CValueArray *val, size_t startCapacity) {
#include "cmem.h"
#include "cobj.h"
#include "cosmo.h"
void initValArray(CState *state, CValueArray *val, size_t startCapacity)
{
val->count = 0;
val->capacity = startCapacity;
val->values = NULL;
}
void cleanValArray(CState *state, CValueArray *array) {
void cleanValArray(CState *state, CValueArray *array)
{
cosmoM_freearray(state, CValue, array->values, array->capacity);
}
void appendValArray(CState *state, CValueArray *array, CValue val) {
void appendValArray(CState *state, CValueArray *array, CValue val)
{
cosmoM_growarray(state, CValue, array->values, array->count, array->capacity);
array->values[array->count++] = val;
}
bool cosmoV_equal(CState *state, CValue valA, CValue valB) {
bool cosmoV_equal(CState *state, CValue valA, CValue valB)
{
if (GET_TYPE(valA) != GET_TYPE(valB)) // are they the same type?
return false;
// compare
switch (GET_TYPE(valA)) {
case COSMO_TBOOLEAN: return cosmoV_readBoolean(valA) == cosmoV_readBoolean(valB);
case COSMO_TNUMBER: return cosmoV_readNumber(valA) == cosmoV_readNumber(valB);
case COSMO_TREF: return cosmoO_equal(state, cosmoV_readRef(valA), cosmoV_readRef(valB));
case COSMO_TNIL: return true;
case COSMO_TBOOLEAN:
return cosmoV_readBoolean(valA) == cosmoV_readBoolean(valB);
case COSMO_TNUMBER:
return cosmoV_readNumber(valA) == cosmoV_readNumber(valB);
case COSMO_TREF:
return cosmoO_equal(state, cosmoV_readRef(valA), cosmoV_readRef(valB));
case COSMO_TNIL:
return true;
default:
return false;
}
}
CObjString *cosmoV_toString(CState *state, CValue val) {
CObjString *cosmoV_toString(CState *state, CValue val)
{
switch (GET_TYPE(val)) {
case COSMO_TNUMBER: {
char buf[32];
int size = snprintf((char*)&buf, 32, "%.14g", cosmoV_readNumber(val));
return cosmoO_copyString(state, (char*)&buf, size);
int size = snprintf((char *)&buf, 32, "%.14g", cosmoV_readNumber(val));
return cosmoO_copyString(state, (char *)&buf, size);
}
case COSMO_TBOOLEAN: {
return cosmoV_readBoolean(val) ? cosmoO_copyString(state, "true", 4) : cosmoO_copyString(state, "false", 5);
return cosmoV_readBoolean(val) ? cosmoO_copyString(state, "true", 4)
: cosmoO_copyString(state, "false", 5);
}
case COSMO_TREF: {
return cosmoO_toString(state, cosmoV_readRef(val));
@ -55,8 +66,9 @@ CObjString *cosmoV_toString(CState *state, CValue val) {
}
}
cosmo_Number cosmoV_toNumber(CState *state, CValue val) {
switch(GET_TYPE(val)) {
cosmo_Number cosmoV_toNumber(CState *state, CValue val)
{
switch (GET_TYPE(val)) {
case COSMO_TNUMBER: {
return cosmoV_readNumber(val);
}
@ -72,19 +84,25 @@ cosmo_Number cosmoV_toNumber(CState *state, CValue val) {
}
}
const char *cosmoV_typeStr(CValue val) {
const char *cosmoV_typeStr(CValue val)
{
switch (GET_TYPE(val)) {
case COSMO_TNIL: return "<nil>";
case COSMO_TBOOLEAN: return "<bool>";
case COSMO_TNUMBER: return "<number>";
case COSMO_TREF: return cosmoO_typeStr(cosmoV_readRef(val));
case COSMO_TNIL:
return "<nil>";
case COSMO_TBOOLEAN:
return "<bool>";
case COSMO_TNUMBER:
return "<number>";
case COSMO_TREF:
return cosmoO_typeStr(cosmoV_readRef(val));
default:
return "<unkn val>";
}
}
void printValue(CValue val) {
void printValue(CValue val)
{
switch (GET_TYPE(val)) {
case COSMO_TNUMBER:
printf("%g", cosmoV_readNumber(val));

93
src/cvalue.h
View File

@ -3,7 +3,8 @@
#include "cosmo.h"
typedef enum {
typedef enum
{
COSMO_TNUMBER, // number has to be 0 because NaN box
COSMO_TBOOLEAN,
COSMO_TREF,
@ -18,8 +19,8 @@ typedef double cosmo_Number;
#ifdef NAN_BOXXED
/*
NaN box, this is great for fitting more in the cpu cache on x86_64 or ARM64 architectures. If you don't know how this works please reference these
two articles:
NaN box, this is great for fitting more in the cpu cache on x86_64 or ARM64 architectures.
If you don't know how this works please reference these two articles:
https://leonardschuetz.ch/blog/nan-boxing/ and https://piotrduperas.com/posts/nan-boxing/
@ -27,83 +28,88 @@ typedef double cosmo_Number;
TL;DR: we can store payloads in the NaN value in the IEEE 754 standard.
*/
union CValue {
union CValue
{
uint64_t data;
cosmo_Number num;
};
#define MASK_TYPE ((uint64_t)0x0007000000000000)
#define MASK_PAYLOAD ((uint64_t)0x0000ffffffffffff)
# define MASK_TYPE ((uint64_t)0x0007000000000000)
# define MASK_PAYLOAD ((uint64_t)0x0000ffffffffffff)
// 3 bits (low bits) are reserved for the type
#define MAKE_PAYLOAD(x) ((uint64_t)(x) & MASK_PAYLOAD)
#define READ_PAYLOAD(x) ((x).data & MASK_PAYLOAD)
# define MAKE_PAYLOAD(x) ((uint64_t)(x)&MASK_PAYLOAD)
# define READ_PAYLOAD(x) ((x).data & MASK_PAYLOAD)
// The bits that must be set to indicate a quiet NaN.
#define MASK_QUIETNAN ((uint64_t)0x7ff8000000000000)
# define MASK_QUIETNAN ((uint64_t)0x7ff8000000000000)
#define GET_TYPE(x) \
((((x).data & MASK_QUIETNAN) == MASK_QUIETNAN) ? (((x).data & MASK_TYPE) >> 48) : COSMO_TNUMBER)
# define GET_TYPE(x) \
((((x).data & MASK_QUIETNAN) == MASK_QUIETNAN) ? (((x).data & MASK_TYPE) >> 48) \
: COSMO_TNUMBER)
#define SIG_MASK (MASK_QUIETNAN | MASK_TYPE)
#define BOOL_SIG (MASK_QUIETNAN | ((uint64_t)(COSMO_TBOOLEAN) << 48))
#define OBJ_SIG (MASK_QUIETNAN | ((uint64_t)(COSMO_TREF) << 48))
#define NIL_SIG (MASK_QUIETNAN | ((uint64_t)(COSMO_TNIL) << 48))
# define SIG_MASK (MASK_QUIETNAN | MASK_TYPE)
# define BOOL_SIG (MASK_QUIETNAN | ((uint64_t)(COSMO_TBOOLEAN) << 48))
# define OBJ_SIG (MASK_QUIETNAN | ((uint64_t)(COSMO_TREF) << 48))
# define NIL_SIG (MASK_QUIETNAN | ((uint64_t)(COSMO_TNIL) << 48))
#define cosmoV_newNumber(x) ((CValue){.num = x})
#define cosmoV_newBoolean(x) ((CValue){.data = MAKE_PAYLOAD(x) | BOOL_SIG})
#define cosmoV_newRef(x) ((CValue){.data = MAKE_PAYLOAD((uintptr_t)x) | OBJ_SIG})
#define cosmoV_newNil() ((CValue){.data = NIL_SIG})
# define cosmoV_newNumber(x) ((CValue){.num = x})
# define cosmoV_newBoolean(x) ((CValue){.data = MAKE_PAYLOAD(x) | BOOL_SIG})
# define cosmoV_newRef(x) ((CValue){.data = MAKE_PAYLOAD((uintptr_t)x) | OBJ_SIG})
# define cosmoV_newNil() ((CValue){.data = NIL_SIG})
#define cosmoV_readNumber(x) ((x).num)
#define cosmoV_readBoolean(x) ((bool)READ_PAYLOAD(x))
#define cosmoV_readRef(x) ((CObj*)READ_PAYLOAD(x))
# define cosmoV_readNumber(x) ((x).num)
# define cosmoV_readBoolean(x) ((bool)READ_PAYLOAD(x))
# define cosmoV_readRef(x) ((CObj *)READ_PAYLOAD(x))
#define IS_NUMBER(x) (((x).data & MASK_QUIETNAN) != MASK_QUIETNAN)
#define IS_BOOLEAN(x) (((x).data & SIG_MASK) == BOOL_SIG)
#define IS_NIL(x) (((x).data & SIG_MASK) == NIL_SIG)
#define IS_REF(x) (((x).data & SIG_MASK) == OBJ_SIG)
# define IS_NUMBER(x) (((x).data & MASK_QUIETNAN) != MASK_QUIETNAN)
# define IS_BOOLEAN(x) (((x).data & SIG_MASK) == BOOL_SIG)
# define IS_NIL(x) (((x).data & SIG_MASK) == NIL_SIG)
# define IS_REF(x) (((x).data & SIG_MASK) == OBJ_SIG)
#else
/*
Tagged union, this is the best platform independent solution
*/
struct CValue {
struct CValue
{
CosmoType type;
union {
union
{
cosmo_Number num;
bool b; // boolean
CObj *obj;
} val;
};
#define GET_TYPE(x) ((x).type)
# define GET_TYPE(x) ((x).type)
// create CValues
#define cosmoV_newNumber(x) ((CValue){COSMO_TNUMBER, {.num = (x)}})
#define cosmoV_newBoolean(x) ((CValue){COSMO_TBOOLEAN, {.b = (x)}})
#define cosmoV_newRef(x) ((CValue){COSMO_TREF, {.obj = (CObj*)(x)}})
#define cosmoV_newNil() ((CValue){COSMO_TNIL, {.num = 0}})
# define cosmoV_newNumber(x) ((CValue){COSMO_TNUMBER, {.num = (x)}})
# define cosmoV_newBoolean(x) ((CValue){COSMO_TBOOLEAN, {.b = (x)}})
# define cosmoV_newRef(x) ((CValue){COSMO_TREF, {.obj = (CObj *)(x)}})
# define cosmoV_newNil() ((CValue){COSMO_TNIL, {.num = 0}})
// read CValues
#define cosmoV_readNumber(x) ((cosmo_Number)(x).val.num)
#define cosmoV_readBoolean(x) ((bool)(x).val.b)
# define cosmoV_readNumber(x) ((cosmo_Number)(x).val.num)
# define cosmoV_readBoolean(x) ((bool)(x).val.b)
// grabs the CObj* pointer from the CValue
#define cosmoV_readRef(x) ((CObj*)(x).val.obj)
# define cosmoV_readRef(x) ((CObj *)(x).val.obj)
#define IS_NUMBER(x) (GET_TYPE(x) == COSMO_TNUMBER)
#define IS_BOOLEAN(x) (GET_TYPE(x) == COSMO_TBOOLEAN)
#define IS_NIL(x) (GET_TYPE(x) == COSMO_TNIL)
#define IS_REF(x) (GET_TYPE(x) == COSMO_TREF)
# define IS_NUMBER(x) (GET_TYPE(x) == COSMO_TNUMBER)
# define IS_BOOLEAN(x) (GET_TYPE(x) == COSMO_TBOOLEAN)
# define IS_NIL(x) (GET_TYPE(x) == COSMO_TNIL)
# define IS_REF(x) (GET_TYPE(x) == COSMO_TREF)
#endif
typedef CValue* StkPtr;
typedef CValue *StkPtr;
struct CValueArray {
struct CValueArray
{
size_t capacity;
size_t count;
CValue *values;
@ -117,6 +123,7 @@ void printValue(CValue val);
COSMO_API bool cosmoV_equal(CState *state, CValue valA, CValue valB);
COSMO_API CObjString *cosmoV_toString(CState *state, CValue val);
COSMO_API cosmo_Number cosmoV_toNumber(CState *state, CValue val);
COSMO_API const char *cosmoV_typeStr(CValue val); // return constant char array for corresponding type
COSMO_API const char *
cosmoV_typeStr(CValue val); // return constant char array for corresponding type
#endif

342
src/cvm.c
View File

@ -1,15 +1,16 @@
#include "cvm.h"
#include "cstate.h"
#include "cdebug.h"
#include "cmem.h"
#include "cparse.h"
#include "cstate.h"
#include <math.h>
#include <stdarg.h>
#include <string.h>
#include <math.h>
COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...) {
COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...)
{
va_list args;
va_start(args, format);
cosmoO_pushVFString(state, format, args);
@ -17,18 +18,20 @@ COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...) {
}
// inserts val at state->top - indx - 1, moving everything else up
COSMO_API void cosmo_insert(CState *state, int indx, CValue val) {
COSMO_API void cosmo_insert(CState *state, int indx, CValue val)
{
StkPtr tmp = cosmoV_getTop(state, indx);
// moves everything up
for (StkPtr i = state->top; i > tmp; i--)
*i = *(i-1);
*i = *(i - 1);
*tmp = val;
state->top++;
}
COSMO_API bool cosmoV_compileString(CState *state, const char *src, const char *name) {
COSMO_API bool cosmoV_compileString(CState *state, const char *src, const char *name)
{
CObjFunction *func;
if ((func = cosmoP_compileString(state, src, name)) != NULL) {
@ -36,19 +39,21 @@ COSMO_API bool cosmoV_compileString(CState *state, const char *src, const char *
#ifdef VM_DEBUG
disasmChunk(&func->chunk, func->module->str, 0);
#endif
// push function onto the stack so it doesn't it cleaned up by the GC, at the same stack location put our closure
cosmoV_pushRef(state, (CObj*)func);
// push function onto the stack so it doesn't it cleaned up by the GC, at the same stack
// location put our closure
cosmoV_pushRef(state, (CObj *)func);
*(cosmoV_getTop(state, 0)) = cosmoV_newRef(cosmoO_newClosure(state, func));
return true;
}
// fail
state->panic = false;
cosmoV_pushRef(state, (CObj*)state->error);
cosmoV_pushRef(state, (CObj *)state->error);
return false;
}
COSMO_API void cosmoV_printError(CState *state, CObjError *err) {
COSMO_API void cosmoV_printError(CState *state, CObjError *err)
{
// print stack trace
for (int i = 0; i < err->frameCount; i++) {
CCallFrame *frame = &err->frames[i];
@ -57,8 +62,11 @@ COSMO_API void cosmoV_printError(CState *state, CObjError *err) {
int line = chunk->lineInfo[frame->pc - chunk->buf - 1];
if (i == err->frameCount - 1 && !err->parserError) // it's the last call frame (and not a parser error), prepare for the objection to be printed
fprintf(stderr, "Objection in %.*s on [line %d] in ", function->module->length, function->module->str, line);
if (i == err->frameCount - 1 &&
!err->parserError) // it's the last call frame (and not a parser error), prepare for the
// objection to be printed
fprintf(stderr, "Objection in %.*s on [line %d] in ", function->module->length,
function->module->str, line);
else
fprintf(stderr, "[line %d] in ", line);
@ -78,11 +86,12 @@ COSMO_API void cosmoV_printError(CState *state, CObjError *err) {
}
/*
takes value on top of the stack and wraps an CObjError around it, state->error is set to that value
the value on the stack is *expected* to be a string, but not required, so
yes, this means you could throw a nil value if you really wanted too..
takes value on top of the stack and wraps an CObjError around it, state->error is set to that
value the value on the stack is *expected* to be a string, but not required, so yes, this means
you could throw a nil value if you really wanted too..
*/
CObjError* cosmoV_throw(CState *state) {
CObjError *cosmoV_throw(CState *state)
{
StkPtr temp = cosmoV_getTop(state, 0);
CObjError *error = cosmoO_newError(state, *temp);
@ -93,7 +102,8 @@ CObjError* cosmoV_throw(CState *state) {
return error;
}
void cosmoV_error(CState *state, const char *format, ...) {
void cosmoV_error(CState *state, const char *format, ...)
{
if (state->panic)
return;
@ -110,11 +120,13 @@ void cosmoV_error(CState *state, const char *format, ...) {
cosmoV_throw(state);
}
CObjUpval *captureUpvalue(CState *state, CValue *local) {
CObjUpval *captureUpvalue(CState *state, CValue *local)
{
CObjUpval *prev = NULL;
CObjUpval *upvalue = state->openUpvalues;
while (upvalue != NULL && upvalue->val > local) { // while upvalue exists and is higher on the stack than local
while (upvalue != NULL &&
upvalue->val > local) { // while upvalue exists and is higher on the stack than local
prev = upvalue;
upvalue = upvalue->next;
}
@ -136,8 +148,11 @@ CObjUpval *captureUpvalue(CState *state, CValue *local) {
return newUpval;
}
void closeUpvalues(CState *state, CValue *local) {
while (state->openUpvalues != NULL && state->openUpvalues->val >= local) { // for every upvalue that points to the local or anything above it
void closeUpvalues(CState *state, CValue *local)
{
while (state->openUpvalues != NULL &&
state->openUpvalues->val >=
local) { // for every upvalue that points to the local or anything above it
CObjUpval *upvalue = state->openUpvalues;
upvalue->closed = *upvalue->val;
upvalue->val = &upvalue->closed; // upvalue now points to itself :P
@ -145,7 +160,8 @@ void closeUpvalues(CState *state, CValue *local) {
}
}
void pushCallFrame(CState *state, CObjClosure *closure, int args) {
void pushCallFrame(CState *state, CObjClosure *closure, int args)
{
#ifdef SAFE_STACK
if (state->frameCount >= FRAME_MAX) {
cosmoV_error(state, "Callframe overflow!");
@ -159,23 +175,27 @@ void pushCallFrame(CState *state, CObjClosure *closure, int args) {
frame->closure = closure;
}
// offset is the offset of the callframe base we set the state->top back too (useful for passing values in the stack as arguments, like methods)
void popCallFrame(CState *state, int offset) {
closeUpvalues(state, state->callFrame[state->frameCount - 1].base); // close any upvalue still open
// offset is the offset of the callframe base we set the state->top back too (useful for passing
// values in the stack as arguments, like methods)
void popCallFrame(CState *state, int offset)
{
closeUpvalues(state,
state->callFrame[state->frameCount - 1].base); // close any upvalue still open
state->top = state->callFrame[state->frameCount - 1].base + offset; // resets the stack
state->frameCount--;
}
void cosmoV_concat(CState *state, int vals) {
void cosmoV_concat(CState *state, int vals)
{
StkPtr start = state->top - vals;
StkPtr end = cosmoV_getTop(state, 0);
CObjString *result = cosmoV_toString(state, *start);
for (StkPtr current = start + 1; current <= end; current++) {
cosmoV_pushRef(state, (CObj*)result); // so our GC can find our current result string
cosmoV_pushRef(state, (CObj *)result); // so our GC can find our current result string
CObjString *otherStr = cosmoV_toString(state, *current);
cosmoV_pushRef(state, (CObj*)otherStr); // also so our GC won't free otherStr
cosmoV_pushRef(state, (CObj *)otherStr); // also so our GC won't free otherStr
// concat the two strings together
size_t sz = result->length + otherStr->length;
@ -190,34 +210,37 @@ void cosmoV_concat(CState *state, int vals) {
}
state->top = start;
cosmoV_pushRef(state, (CObj*)result);
cosmoV_pushRef(state, (CObj *)result);
}
int cosmoV_execute(CState *state);
bool invokeMethod(CState* state, CObj *obj, CValue func, int args, int nresults, int offset);
bool invokeMethod(CState *state, CObj *obj, CValue func, int args, int nresults, int offset);
/*
calls a native C Function with # args on the stack, nresults are pushed onto the stack upon return.
calls a native C Function with # args on the stack, nresults are pushed onto the stack upon
return.
returns:
false: state paniced during C Function, error is at state->error
true: state->top is moved to base + offset + nresults, with nresults pushed onto the stack from base + offset
true: state->top is moved to base + offset + nresults, with nresults pushed onto the stack
from base + offset
*/
static bool callCFunction(CState *state, CosmoCFunction cfunc, int args, int nresults, int offset) {
static bool callCFunction(CState *state, CosmoCFunction cfunc, int args, int nresults, int offset)
{
StkPtr savedBase = cosmoV_getTop(state, args);
// we don't want a GC event during c api because we don't actually trust the user to know how to evade the GC
// we don't want a GC event during c api because we don't actually trust the user to know how to
// evade the GC
cosmoM_freezeGC(state);
int nres = cfunc(state, args, savedBase + 1);
cosmoM_unfreezeGC(state);
// caller function wasn't expecting this many return values, cap it
if (nres > nresults)
nres = nresults;
// remember where the return values are
StkPtr results = cosmoV_getTop(state, nres-1);
StkPtr results = cosmoV_getTop(state, nres - 1);
state->top = savedBase + offset; // set stack
@ -226,7 +249,8 @@ static bool callCFunction(CState *state, CosmoCFunction cfunc, int args, int nre
return false;
// push the return value back onto the stack
memmove(state->top, results, sizeof(CValue) * nres); // copies the return values to the top of the stack
memmove(state->top, results,
sizeof(CValue) * nres); // copies the return values to the top of the stack
state->top += nres; // and make sure to move state->top to match
// now, if the caller function expected more return values, push nils onto the stack
@ -237,19 +261,22 @@ static bool callCFunction(CState *state, CosmoCFunction cfunc, int args, int nre
}
/*
calls a raw closure object with # args on the stack, nresults are pushed onto the stack upon return.
calls a raw closure object with # args on the stack, nresults are pushed onto the stack upon
return.
returns:
false: state paniced, error is at state->error
true: stack->top is moved to base + offset + nresults, with nresults pushed onto the stack from base + offset
true: stack->top is moved to base + offset + nresults, with nresults pushed onto the stack
from base + offset
*/
static bool rawCall(CState *state, CObjClosure *closure, int args, int nresults, int offset) {
static bool rawCall(CState *state, CObjClosure *closure, int args, int nresults, int offset)
{
CObjFunction *func = closure->function;
// if the function is variadic and theres more args than parameters, push the args into a table
if (func->variadic && args >= func->args) {
int extraArgs = args - func->args;
StkPtr variStart = cosmoV_getTop(state, extraArgs-1);
StkPtr variStart = cosmoV_getTop(state, extraArgs - 1);
// push key & value pairs
for (int i = 0; i < extraArgs; i++) {
@ -263,7 +290,9 @@ static bool rawCall(CState *state, CObjClosure *closure, int args, int nresults,
pushCallFrame(state, closure, func->args + 1);
} else if (args != func->args) { // mismatched args
cosmoV_error(state, "Expected %d arguments for %s, got %d!", closure->function->args, closure->function->name == NULL ? UNNAMEDCHUNK : closure->function->name->str, args);
cosmoV_error(state, "Expected %d arguments for %s, got %d!", closure->function->args,
closure->function->name == NULL ? UNNAMEDCHUNK : closure->function->name->str,
args);
return false;
} else {
// load function into callframe
@ -277,7 +306,7 @@ static bool rawCall(CState *state, CObjClosure *closure, int args, int nresults,
nres = nresults;
// remember where the return values are
StkPtr results = cosmoV_getTop(state, nres-1);
StkPtr results = cosmoV_getTop(state, nres - 1);
// pop the callframe and return results :)
popCallFrame(state, offset);
@ -298,7 +327,8 @@ static bool rawCall(CState *state, CObjClosure *closure, int args, int nresults,
return true;
}
bool callCValue(CState *state, CValue func, int args, int nresults, int offset) {
bool callCValue(CState *state, CValue func, int args, int nresults, int offset)
{
#ifdef VM_DEBUG
printf("\n");
printIndent(state->frameCount - 1);
@ -317,21 +347,21 @@ bool callCValue(CState *state, CValue func, int args, int nresults, int offset)
case COBJ_CFUNCTION:
return callCFunction(state, cosmoV_readCFunction(func), args, nresults, offset);
case COBJ_METHOD: {
CObjMethod *method = (CObjMethod*)cosmoV_readRef(func);
CObjMethod *method = (CObjMethod *)cosmoV_readRef(func);
return invokeMethod(state, method->obj, method->func, args, nresults, offset + 1);
}
case COBJ_OBJECT: { // object is being instantiated, making another object
CObjObject *protoObj = (CObjObject*)cosmoV_readRef(func);
CObjObject *protoObj = (CObjObject *)cosmoV_readRef(func);
CValue ret;
cosmoV_pushRef(state, (CObj*)protoObj); // push proto to stack for GC to find
cosmoV_pushRef(state, (CObj *)protoObj); // push proto to stack for GC to find
CObjObject *newObj = cosmoO_newObject(state);
newObj->_obj.proto = protoObj;
cosmoV_pop(state); // pop proto
// check if they defined an initializer (we accept 0 return values)
if (cosmoO_getIString(state, protoObj, ISTRING_INIT, &ret)) {
if (!invokeMethod(state, (CObj*)newObj, ret, args, 0, offset + 1))
if (!invokeMethod(state, (CObj *)newObj, ret, args, 0, offset + 1))
return false;
} else {
// no default initializer
@ -340,10 +370,11 @@ bool callCValue(CState *state, CValue func, int args, int nresults, int offset)
}
if (nresults > 0) {
cosmoV_pushRef(state, (CObj*)newObj);
cosmoV_pushRef(state, (CObj *)newObj);
// push the nils to fill up the expected return values
for (int i = 0; i < nresults - 1; i++) { // -1 since the we already pushed the important value
for (int i = 0; i < nresults - 1;
i++) { // -1 since the we already pushed the important value
cosmoV_pushValue(state, cosmoV_newNil());
}
}
@ -357,16 +388,19 @@ bool callCValue(CState *state, CValue func, int args, int nresults, int offset)
return true;
}
bool invokeMethod(CState* state, CObj *obj, CValue func, int args, int nresults, int offset) {
bool invokeMethod(CState *state, CObj *obj, CValue func, int args, int nresults, int offset)
{
// first, set the first argument to the object
StkPtr temp = cosmoV_getTop(state, args);
*temp = cosmoV_newRef(obj);
return callCValue(state, func, args+1, nresults, offset);
return callCValue(state, func, args + 1, nresults, offset);
}
// wraps cosmoV_call in a protected state, CObjError will be pushed onto the stack if function call failed, else return values are passed
COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults) {
// wraps cosmoV_call in a protected state, CObjError will be pushed onto the stack if function call
// failed, else return values are passed
COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults)
{
StkPtr base = cosmoV_getTop(state, args);
if (!callCValue(state, *base, args, nresults, 0)) {
@ -374,10 +408,10 @@ COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults) {
state->panic = false;
if (nresults > 0) {
cosmoV_pushRef(state, (CObj*)state->error);
cosmoV_pushRef(state, (CObj *)state->error);
// push other expected results onto the stack
for (int i = 0; i < nresults-1; i++)
for (int i = 0; i < nresults - 1; i++)
cosmoV_pushValue(state, cosmoV_newNil());
}
@ -388,30 +422,34 @@ COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults) {
}
/*
calls a callable object at stack->top - args - 1, passing the # of args to the callable, and ensuring nresults are returned
calls a callable object at stack->top - args - 1, passing the # of args to the callable, and
ensuring nresults are returned
returns:
COSMOVM_OK: callable object exited normally
COSMOVM_RUNTIME_ERR: an error occurred, grab the error from state->error
*/
COSMOVMRESULT cosmoV_call(CState *state, int args, int nresults) {
COSMOVMRESULT cosmoV_call(CState *state, int args, int nresults)
{
StkPtr val = cosmoV_getTop(state, args); // function will always be right above the args
return callCValue(state, *val, args, nresults, 0) ? COSMOVM_OK : COSMOVM_RUNTIME_ERR;
}
static inline bool isFalsey(StkPtr val) {
static inline bool isFalsey(StkPtr val)
{
return IS_NIL(*val) || (IS_BOOLEAN(*val) && !cosmoV_readBoolean(*val));
}
COSMO_API CObjObject* cosmoV_makeObject(CState *state, int pairs) {
COSMO_API CObjObject *cosmoV_makeObject(CState *state, int pairs)
{
StkPtr key, val;
CObjObject *newObj = cosmoO_newObject(state);
cosmoV_pushRef(state, (CObj*)newObj); // so our GC doesn't free our new object
cosmoV_pushRef(state, (CObj *)newObj); // so our GC doesn't free our new object
for (int i = 0; i < pairs; i++) {
val = cosmoV_getTop(state, (i*2) + 1);
key = cosmoV_getTop(state, (i*2) + 2);
val = cosmoV_getTop(state, (i * 2) + 1);
key = cosmoV_getTop(state, (i * 2) + 2);
// set key/value pair
CValue *newVal = cosmoT_insert(state, &newObj->tbl, *key);
@ -420,11 +458,12 @@ COSMO_API CObjObject* cosmoV_makeObject(CState *state, int pairs) {
// once done, pop everything off the stack + push new object
cosmoV_setTop(state, (pairs * 2) + 1); // + 1 for our object
cosmoV_pushRef(state, (CObj*)newObj);
cosmoV_pushRef(state, (CObj *)newObj);
return newObj;
}
COSMO_API bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjObject *obj) {
COSMO_API bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjObject *obj)
{
bool replaced = state->protoObjects[objType] != NULL;
state->protoObjects[objType] = obj;
@ -441,14 +480,15 @@ COSMO_API bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjO
return replaced;
}
COSMO_API void cosmoV_makeTable(CState *state, int pairs) {
COSMO_API void cosmoV_makeTable(CState *state, int pairs)
{
StkPtr key, val;
CObjTable *newObj = cosmoO_newTable(state);
cosmoV_pushRef(state, (CObj*)newObj); // so our GC doesn't free our new table
cosmoV_pushRef(state, (CObj *)newObj); // so our GC doesn't free our new table
for (int i = 0; i < pairs; i++) {
val = cosmoV_getTop(state, (i*2) + 1);
key = cosmoV_getTop(state, (i*2) + 2);
val = cosmoV_getTop(state, (i * 2) + 1);
key = cosmoV_getTop(state, (i * 2) + 2);
// set key/value pair
CValue *newVal = cosmoT_insert(state, &newObj->tbl, *key);
@ -457,22 +497,24 @@ COSMO_API void cosmoV_makeTable(CState *state, int pairs) {
// once done, pop everything off the stack + push new table
cosmoV_setTop(state, (pairs * 2) + 1); // + 1 for our table
cosmoV_pushRef(state, (CObj*)newObj);
cosmoV_pushRef(state, (CObj *)newObj);
}
bool cosmoV_rawget(CState *state, CObj *_obj, CValue key, CValue *val) {
bool cosmoV_rawget(CState *state, CObj *_obj, CValue key, CValue *val)
{
CObjObject *object = cosmoO_grabProto(_obj);
// no proto to get from
if (object == NULL) {
CObjString *field = cosmoV_toString(state, key);
cosmoV_error(state, "No proto defined! Couldn't get field '%s' from type %s", field->str, cosmoO_typeStr(_obj));
cosmoV_error(state, "No proto defined! Couldn't get field '%s' from type %s", field->str,
cosmoO_typeStr(_obj));
*val = cosmoV_newNil();
return false;
}
// push the object onto the stack so the GC can find it
cosmoV_pushRef(state, (CObj*)object);
cosmoV_pushRef(state, (CObj *)object);
if (cosmoO_getRawObject(state, object, key, val, _obj)) {
// *val now equals the response, pop the object
cosmoV_pop(state);
@ -483,13 +525,15 @@ bool cosmoV_rawget(CState *state, CObj *_obj, CValue key, CValue *val) {
return false;
}
bool cosmoV_rawset(CState *state, CObj *_obj, CValue key, CValue val) {
bool cosmoV_rawset(CState *state, CObj *_obj, CValue key, CValue val)
{
CObjObject *object = cosmoO_grabProto(_obj);
// no proto to set to
if (object == NULL) {
CObjString *field = cosmoV_toString(state, key);
cosmoV_error(state, "No proto defined! Couldn't set field '%s' to type %s", field->str, cosmoO_typeStr(_obj));
cosmoV_error(state, "No proto defined! Couldn't set field '%s' to type %s", field->str,
cosmoO_typeStr(_obj));
return false;
}
@ -497,7 +541,8 @@ bool cosmoV_rawset(CState *state, CObj *_obj, CValue key, CValue val) {
return true;
}
COSMO_API bool cosmoV_get(CState *state) {
COSMO_API bool cosmoV_get(CState *state)
{
CValue val;
StkPtr obj = cosmoV_getTop(state, 1); // object was pushed first
StkPtr key = cosmoV_getTop(state, 0); // then the key
@ -517,7 +562,8 @@ COSMO_API bool cosmoV_get(CState *state) {
}
// yes, this would technically make it possible to set fields of types other than <string>. go crazy
COSMO_API bool cosmoV_set(CState *state) {
COSMO_API bool cosmoV_set(CState *state)
{
StkPtr obj = cosmoV_getTop(state, 2); // object was pushed first
StkPtr key = cosmoV_getTop(state, 1); // then the key
StkPtr val = cosmoV_getTop(state, 0); // and finally the value
@ -535,14 +581,15 @@ COSMO_API bool cosmoV_set(CState *state) {
return true;
}
COSMO_API bool cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val) {
COSMO_API bool cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val)
{
if (!cosmoV_rawget(state, obj, key, val))
return false;
// if the result is callable, wrap it in an method
if (IS_CALLABLE(*val)) {
// push object to stack so the GC can find it
cosmoV_pushRef(state, (CObj*)obj);
cosmoV_pushRef(state, (CObj *)obj);
CObjMethod *method = cosmoO_newMethod(state, *val, obj);
cosmoV_pop(state); // pop the object
*val = cosmoV_newRef(method);
@ -551,7 +598,8 @@ COSMO_API bool cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *va
return true;
}
int _tbl__next(CState *state, int nargs, CValue *args) {
int _tbl__next(CState *state, int nargs, CValue *args)
{
if (nargs != 1) {
cosmoV_error(state, "Expected 1 parameter, %d received!", nargs);
return 0;
@ -569,10 +617,11 @@ int _tbl__next(CState *state, int nargs, CValue *args) {
cosmoO_getIString(state, obj, ISTRING_RESERVED, &val);
if (!IS_TABLE(val)) {
return 0; // someone set the __reserved member to something else. this will exit the iterator loop
return 0; // someone set the __reserved member to something else. this will exit the
// iterator loop
}
CObjTable *table = (CObjTable*)cosmoV_readRef(val);
CObjTable *table = (CObjTable *)cosmoV_readRef(val);
// while the entry is invalid, go to the next entry
int cap = table->tbl.capacityMask + 1;
@ -582,7 +631,8 @@ int _tbl__next(CState *state, int nargs, CValue *args) {
} while (IS_NIL(entry->key) && index < cap);
cosmoO_setUserI(obj, index); // update the userdata
if (index < cap && !IS_NIL(entry->key)) { // if the entry is valid, return it's key and value pair
if (index < cap &&
!IS_NIL(entry->key)) { // if the entry is valid, return it's key and value pair
cosmoV_pushValue(state, entry->key);
cosmoV_pushValue(state, entry->val);
return 2; // we pushed 2 values onto the stack for the return values
@ -598,22 +648,25 @@ int _tbl__next(CState *state, int nargs, CValue *args) {
cosmoV_setTop(state, 2); /* pop the 2 values */ \
cosmoV_pushValue(state, typeConst(cosmoV_readNumber(*valA) op cosmoV_readNumber(*valB))); \
} else { \
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA), cosmoV_typeStr(*valB)); \
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA), \
cosmoV_typeStr(*valB)); \
return -1; \
} \
}
// returns -1 if panic
int cosmoV_execute(CState *state) {
CCallFrame* frame = &state->callFrame[state->frameCount - 1]; // grabs the current frame
int cosmoV_execute(CState *state)
{
CCallFrame *frame = &state->callFrame[state->frameCount - 1]; // grabs the current frame
CValue *constants = frame->closure->function->chunk.constants.values; // cache the pointer :)
#define READBYTE() *frame->pc++
#define READUINT() (frame->pc += 2, *(uint16_t*)(&frame->pc[-2]))
#define READUINT() (frame->pc += 2, *(uint16_t *)(&frame->pc[-2]))
while (!state->panic) {
#ifdef VM_DEBUG
cosmoV_printStack(state);
disasmInstr(&frame->closure->function->chunk, frame->pc - frame->closure->function->chunk.buf, state->frameCount - 1);
disasmInstr(&frame->closure->function->chunk,
frame->pc - frame->closure->function->chunk.buf, state->frameCount - 1);
printf("\n");
#endif
switch (READBYTE()) {
@ -700,7 +753,7 @@ int cosmoV_execute(CState *state) {
uint16_t index = READUINT();
CObjFunction *func = cosmoV_readFunction(constants[index]);
CObjClosure *closure = cosmoO_newClosure(state, func);
cosmoV_pushRef(state, (CObj*)closure);
cosmoV_pushRef(state, (CObj *)closure);
for (int i = 0; i < closure->upvalueCount; i++) {
uint8_t encoding = READBYTE();
@ -730,19 +783,20 @@ int cosmoV_execute(CState *state) {
uint16_t pairs = READUINT();
StkPtr val;
CObjTable *newObj = cosmoO_newTable(state);
cosmoV_pushRef(state, (CObj*)newObj); // so our GC doesn't free our new table
cosmoV_pushRef(state, (CObj *)newObj); // so our GC doesn't free our new table
for (int i = 0; i < pairs; i++) {
val = cosmoV_getTop(state, i + 1);
// set key/value pair
CValue *newVal = cosmoT_insert(state, &newObj->tbl, cosmoV_newNumber(pairs - i - 1));
CValue *newVal =
cosmoT_insert(state, &newObj->tbl, cosmoV_newNumber(pairs - i - 1));
*newVal = *val;
}
// once done, pop everything off the stack + push new table
cosmoV_setTop(state, pairs + 1); // + 1 for our table
cosmoV_pushRef(state, (CObj*)newObj);
cosmoV_pushRef(state, (CObj *)newObj);
continue;
}
case OP_INDEX: {
@ -761,14 +815,16 @@ int cosmoV_execute(CState *state) {
if (proto != NULL) {
// check for __index metamethod
if (!cosmoO_indexObject(state, proto, *key, &val)) // if returns false, cosmoV_error was called
if (!cosmoO_indexObject(state, proto, *key,
&val)) // if returns false, cosmoV_error was called
return -1;
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable*)obj;
CObjTable *tbl = (CObjTable *)obj;
cosmoT_get(state, &tbl->tbl, *key, &val);
} else {
cosmoV_error(state, "No proto defined! Couldn't __index from type %s", cosmoV_typeStr(*temp));
cosmoV_error(state, "No proto defined! Couldn't __index from type %s",
cosmoV_typeStr(*temp));
return -1;
}
@ -791,15 +847,17 @@ int cosmoV_execute(CState *state) {
CObjObject *proto = cosmoO_grabProto(obj);
if (proto != NULL) {
if (!cosmoO_newIndexObject(state, proto, *key, *value)) // if it returns false, cosmoV_error was called
if (!cosmoO_newIndexObject(state, proto, *key,
*value)) // if it returns false, cosmoV_error was called
return -1;
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable*)obj;
CObjTable *tbl = (CObjTable *)obj;
CValue *newVal = cosmoT_insert(state, &tbl->tbl, *key);
*newVal = *value; // set the index
} else {
cosmoV_error(state, "No proto defined! Couldn't __newindex from type %s", cosmoV_typeStr(*temp));
cosmoV_error(state, "No proto defined! Couldn't __newindex from type %s",
cosmoV_typeStr(*temp));
return -1;
}
@ -823,7 +881,8 @@ int cosmoV_execute(CState *state) {
return -1;
} else {
CObjString *field = cosmoV_toString(state, constants[ident]);
cosmoV_error(state, "Couldn't set field '%s' on type %s!", field->str, cosmoV_typeStr(*temp));
cosmoV_error(state, "Couldn't set field '%s' on type %s!", field->str,
cosmoV_typeStr(*temp));
return -1;
}
@ -842,7 +901,8 @@ int cosmoV_execute(CState *state) {
return -1;
} else {
CObjString *field = cosmoV_toString(state, constants[ident]);
cosmoV_error(state, "Couldn't get field '%s' from type %s!", field->str, cosmoV_typeStr(*temp));
cosmoV_error(state, "Couldn't get field '%s' from type %s!", field->str,
cosmoV_typeStr(*temp));
return -1;
}
@ -855,13 +915,15 @@ int cosmoV_execute(CState *state) {
StkPtr temp = cosmoV_getTop(state, 0); // that should be the object
uint16_t ident = READUINT(); // use for the key
// this is almost identical to GETOBJECT, however cosmoV_getMethod is used instead of just cosmoV_get
// this is almost identical to GETOBJECT, however cosmoV_getMethod is used instead of
// just cosmoV_get
if (IS_REF(*temp)) {
if (!cosmoV_getMethod(state, cosmoV_readRef(*temp), constants[ident], &val))
return -1;
} else {
CObjString *field = cosmoV_toString(state, constants[ident]);
cosmoV_error(state, "Couldn't get field '%s' from type %s!", field->str, cosmoV_typeStr(*temp));
cosmoV_error(state, "Couldn't get field '%s' from type %s!", field->str,
cosmoV_typeStr(*temp));
return -1;
}
@ -895,7 +957,8 @@ int cosmoV_execute(CState *state) {
StkPtr temp = cosmoV_getTop(state, 0); // should be the object/table
if (!IS_REF(*temp)) {
cosmoV_error(state, "Couldn't iterate over non-iterator type %s!", cosmoV_typeStr(*temp));
cosmoV_error(state, "Couldn't iterate over non-iterator type %s!",
cosmoV_typeStr(*temp));
return -1;
}
@ -908,43 +971,49 @@ int cosmoV_execute(CState *state) {
if (cosmoO_getIString(state, proto, ISTRING_ITER, &val)) {
cosmoV_pop(state); // pop the object from the stack
cosmoV_pushValue(state, val);
cosmoV_pushRef(state, (CObj*)obj);
if (cosmoV_call(state, 1, 1) != COSMOVM_OK) // we expect 1 return value on the stack, the iterable object
cosmoV_pushRef(state, (CObj *)obj);
if (cosmoV_call(state, 1, 1) !=
COSMOVM_OK) // we expect 1 return value on the stack, the iterable object
return -1;
StkPtr iObj = cosmoV_getTop(state, 0);
if (!IS_OBJECT(*iObj)) {
cosmoV_error(state, "Expected iterable object! '__iter' returned %s, expected <object>!", cosmoV_typeStr(*iObj));
cosmoV_error(
state,
"Expected iterable object! '__iter' returned %s, expected <object>!",
cosmoV_typeStr(*iObj));
return -1;
}
// get __next method and place it at the top of the stack
cosmoV_getMethod(state, cosmoV_readRef(*iObj), cosmoV_newRef(state->iStrings[ISTRING_NEXT]), iObj);
cosmoV_getMethod(state, cosmoV_readRef(*iObj),
cosmoV_newRef(state->iStrings[ISTRING_NEXT]), iObj);
} else {
cosmoV_error(state, "Expected iterable object! '__iter' not defined!");
return -1;
}
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable*)obj;
CObjTable *tbl = (CObjTable *)obj;
cosmoV_pushRef(state, (CObj*)state->iStrings[ISTRING_RESERVED]); // key
cosmoV_pushRef(state, (CObj*)tbl); // value
cosmoV_pushRef(state, (CObj *)state->iStrings[ISTRING_RESERVED]); // key
cosmoV_pushRef(state, (CObj *)tbl); // value
cosmoV_pushString(state, "__next"); // key
CObjCFunction *tbl_next = cosmoO_newCFunction(state, _tbl__next);
cosmoV_pushRef(state, (CObj*)tbl_next); // value
cosmoV_pushRef(state, (CObj *)tbl_next); // value
CObjObject *obj = cosmoV_makeObject(state, 2); // pushes the new object to the stack
cosmoO_setUserI(obj, 0); // increment for iterator
// make our CObjMethod for OP_NEXT to call
CObjMethod *method = cosmoO_newMethod(state, cosmoV_newRef(tbl_next), (CObj*)obj);
CObjMethod *method = cosmoO_newMethod(state, cosmoV_newRef(tbl_next), (CObj *)obj);
cosmoV_setTop(state, 2); // pops the object & the tbl
cosmoV_pushRef(state, (CObj*)method); // pushes the method for OP_NEXT
cosmoV_pushRef(state, (CObj *)method); // pushes the method for OP_NEXT
} else {
cosmoV_error(state, "No proto defined! Couldn't get from type %s", cosmoO_typeStr(obj));
cosmoV_error(state, "No proto defined! Couldn't get from type %s",
cosmoO_typeStr(obj));
return -1;
}
@ -956,7 +1025,8 @@ int cosmoV_execute(CState *state) {
StkPtr temp = cosmoV_getTop(state, 0); // we don't actually pop this off the stack
if (!IS_METHOD(*temp)) {
cosmoV_error(state, "Expected '__next' to be a method, got type %s!", cosmoV_typeStr(*temp));
cosmoV_error(state, "Expected '__next' to be a method, got type %s!",
cosmoV_typeStr(*temp));
return -1;
}
@ -964,7 +1034,8 @@ int cosmoV_execute(CState *state) {
if (cosmoV_call(state, 0, nresults) != COSMOVM_OK)
return -1;
if (IS_NIL(*(cosmoV_getTop(state, 0)))) { // __next returned a nil, which means to exit the loop
if (IS_NIL(*(cosmoV_getTop(
state, 0)))) { // __next returned a nil, which means to exit the loop
cosmoV_setTop(state, nresults); // pop the return values
frame->pc += jump;
}
@ -991,9 +1062,11 @@ int cosmoV_execute(CState *state) {
StkPtr valB = cosmoV_getTop(state, 0);
if (IS_NUMBER(*valA) && IS_NUMBER(*valB)) {
cosmoV_setTop(state, 2); /* pop the 2 values */
cosmoV_pushValue(state, cosmoV_newNumber(fmod(cosmoV_readNumber(*valA), cosmoV_readNumber(*valB))));
cosmoV_pushValue(state, cosmoV_newNumber(fmod(cosmoV_readNumber(*valA),
cosmoV_readNumber(*valB))));
} else {
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA), cosmoV_typeStr(*valB));
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA),
cosmoV_typeStr(*valB));
return -1;
}
continue;
@ -1003,9 +1076,11 @@ int cosmoV_execute(CState *state) {
StkPtr valB = cosmoV_getTop(state, 0);
if (IS_NUMBER(*valA) && IS_NUMBER(*valB)) {
cosmoV_setTop(state, 2); /* pop the 2 values */
cosmoV_pushValue(state, cosmoV_newNumber(pow(cosmoV_readNumber(*valA), cosmoV_readNumber(*valB))));
cosmoV_pushValue(state, cosmoV_newNumber(pow(cosmoV_readNumber(*valA),
cosmoV_readNumber(*valB))));
} else {
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA), cosmoV_typeStr(*valB));
cosmoV_error(state, "Expected numbers, got %s and %s!", cosmoV_typeStr(*valA),
cosmoV_typeStr(*valB));
return -1;
}
continue;
@ -1119,12 +1194,13 @@ int cosmoV_execute(CState *state) {
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
// call __newindex
if (!cosmoO_newIndexObject(state, proto, *key, cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
if (!cosmoO_newIndexObject(state, proto, *key,
cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
return -1;
} else
return -1; // cosmoO_indexObject failed and threw an error
} else if (obj->type == COBJ_TABLE) {
CObjTable *tbl = (CObjTable*)obj;
CObjTable *tbl = (CObjTable *)obj;
CValue *val = cosmoT_insert(state, &tbl->tbl, *key);
if (!IS_NUMBER(*val)) {
@ -1137,7 +1213,8 @@ int cosmoV_execute(CState *state) {
cosmoV_pushValue(state, *val); // pushes old value onto the stack :)
*val = cosmoV_newNumber(cosmoV_readNumber(*val) + inc); // sets table index
} else {
cosmoV_error(state, "No proto defined! Couldn't __index from type %s", cosmoV_typeStr(*temp));
cosmoV_error(state, "No proto defined! Couldn't __index from type %s",
cosmoV_typeStr(*temp));
return -1;
}
@ -1163,7 +1240,8 @@ int cosmoV_execute(CState *state) {
// check that it's a number value
if (IS_NUMBER(val)) {
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
if (!cosmoV_rawset(state, obj, ident, cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
if (!cosmoV_rawset(state, obj, ident,
cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
return -1;
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(val));
@ -1201,9 +1279,15 @@ int cosmoV_execute(CState *state) {
NUMBEROP(cosmoV_newBoolean, <=)
continue;
}
case OP_TRUE: cosmoV_pushBoolean(state, true); continue;
case OP_FALSE: cosmoV_pushBoolean(state, false); continue;
case OP_NIL: cosmoV_pushValue(state, cosmoV_newNil()); continue;
case OP_TRUE:
cosmoV_pushBoolean(state, true);
continue;
case OP_FALSE:
cosmoV_pushBoolean(state, false);
continue;
case OP_NIL:
cosmoV_pushValue(state, cosmoV_newNil());
continue;
case OP_RETURN: {
uint8_t res = READBYTE();
return res;

70
src/cvm.h
View File

@ -1,14 +1,15 @@
#ifndef COSMOVM_H
#define COSMOVM_H
#include <string.h>
#include "cosmo.h"
#include "cstate.h"
//#define VM_DEBUG
#include <string.h>
typedef enum {
// #define VM_DEBUG
typedef enum
{
COSMOVM_OK,
COSMOVM_RUNTIME_ERR,
COSMOVM_BUILDTIME_ERR
@ -19,25 +20,26 @@ COSMO_API COSMOVMRESULT cosmoV_call(CState *state, int args, int nresults);
COSMO_API COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults);
// pushes new object onto the stack & returns a pointer to the new object
COSMO_API CObjObject* cosmoV_makeObject(CState *state, int pairs);
COSMO_API CObjObject *cosmoV_makeObject(CState *state, int pairs);
COSMO_API void cosmoV_makeTable(CState *state, int pairs);
COSMO_API void cosmoV_concat(CState *state, int vals);
COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...);
COSMO_API void cosmoV_printError(CState *state, CObjError *err);
COSMO_API CObjError* cosmoV_throw(CState *state);
COSMO_API CObjError *cosmoV_throw(CState *state);
COSMO_API void cosmoV_error(CState *state, const char *format, ...);
COSMO_API void cosmo_insert(CState *state, int indx, CValue val);
/*
Sets the default proto objects for the passed objType. Also walks through the object heap and updates protos
for the passed objType if that CObj* has no proto.
Sets the default proto objects for the passed objType. Also walks through the object heap and
updates protos for the passed objType if that CObj* has no proto.
returns true if replacing a previously registered proto object for this type
*/
COSMO_API bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjObject *obj);
/*
compiles string into a <closure>, if successful, <closure> will be pushed onto the stack otherwise the <error> will be pushed.
compiles string into a <closure>, if successful, <closure> will be pushed onto the stack
otherwise the <error> will be pushed.
returns:
false : <error> is at the top of the stack
@ -48,28 +50,32 @@ COSMO_API bool cosmoV_compileString(CState *state, const char *src, const char *
/*
expects object to be pushed, then the key.
returns false if an error was thrown, returns true if the value was pushed onto the stack and the object and key were popped
returns false if an error was thrown, returns true if the value was pushed onto the stack and
the object and key were popped
*/
COSMO_API bool cosmoV_get(CState *state);
/*
expects object to be pushed, then the key, and finally the new value.
returns false if an error was thrown, returns true if the value was set and the object key, and value were popped
returns false if an error was thrown, returns true if the value was set and the object key, and
value were popped
*/
COSMO_API bool cosmoV_set(CState *state);
// wraps the closure into a CObjMethod, so the function is called as an invoked method
COSMO_API bool cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val);
// clears the stack, callstack and restores the state into a usable state after a calloverflow or another hard to recover error
// (keeps the global table intact)
// clears the stack, callstack and restores the state into a usable state after a calloverflow or
// another hard to recover error (keeps the global table intact)
COSMO_API bool cosmoV_restore(CState *state);
// nice to have wrappers
// pushes a raw CValue to the stack, might throw an error if the stack is overflowed (with the SAFE_STACK macro on)
static inline void cosmoV_pushValue(CState *state, CValue val) {
// pushes a raw CValue to the stack, might throw an error if the stack is overflowed (with the
// SAFE_STACK macro on)
static inline void cosmoV_pushValue(CState *state, CValue val)
{
#ifdef SAFE_STACK
ptrdiff_t stackSize = state->top - state->stack;
@ -91,51 +97,61 @@ static inline void cosmoV_pushValue(CState *state, CValue val) {
}
// sets stack->top to stack->top - indx
static inline StkPtr cosmoV_setTop(CState *state, int indx) {
static inline StkPtr cosmoV_setTop(CState *state, int indx)
{
state->top -= indx;
return state->top;
}
// returns stack->top - indx - 1
static inline StkPtr cosmoV_getTop(CState *state, int indx) {
static inline StkPtr cosmoV_getTop(CState *state, int indx)
{
return &state->top[-(indx + 1)];
}
// pops 1 value off the stack, returns the popped value
static inline StkPtr cosmoV_pop(CState *state) {
static inline StkPtr cosmoV_pop(CState *state)
{
return cosmoV_setTop(state, 1);
}
// pushes a cosmo_Number to the stack
static inline void cosmoV_pushNumber(CState *state, cosmo_Number num) {
static inline void cosmoV_pushNumber(CState *state, cosmo_Number num)
{
cosmoV_pushValue(state, cosmoV_newNumber(num));
}
// pushes a boolean to the stack
static inline void cosmoV_pushBoolean(CState *state, bool b) {
static inline void cosmoV_pushBoolean(CState *state, bool b)
{
cosmoV_pushValue(state, cosmoV_newBoolean(b));
}
static inline void cosmoV_pushRef(CState *state, CObj *obj) {
static inline void cosmoV_pushRef(CState *state, CObj *obj)
{
cosmoV_pushValue(state, cosmoV_newRef(obj));
}
// pushes a C Function to the stack
static inline void cosmoV_pushCFunction(CState *state, CosmoCFunction func) {
cosmoV_pushRef(state, (CObj*)cosmoO_newCFunction(state, func));
static inline void cosmoV_pushCFunction(CState *state, CosmoCFunction func)
{
cosmoV_pushRef(state, (CObj *)cosmoO_newCFunction(state, func));
}
// len is the length of the string without the NULL terminator
static inline void cosmoV_pushLString(CState *state, const char *str, size_t len) {
cosmoV_pushRef(state, (CObj*)cosmoO_copyString(state, str, len));
static inline void cosmoV_pushLString(CState *state, const char *str, size_t len)
{
cosmoV_pushRef(state, (CObj *)cosmoO_copyString(state, str, len));
}
// accepts a null terminated string and copys the buffer to the VM heap
static inline void cosmoV_pushString(CState *state, const char *str) {
static inline void cosmoV_pushString(CState *state, const char *str)
{
cosmoV_pushLString(state, str, strlen(str));
}
static inline void cosmoV_pushNil(CState *state) {
static inline void cosmoV_pushNil(CState *state)
{
cosmoV_pushValue(state, cosmoV_newNil());
}