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Added CObj->proto support, state->protoObjects defines default protos for each COBJ type

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a lot of refactoring in the VM
This commit is contained in:
CPunch 2021-01-07 19:50:36 -06:00
parent c5bd0c2478
commit 1351ff63b1
9 changed files with 195 additions and 150 deletions
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19
src/cbaselib.c
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@ -131,13 +131,24 @@ void cosmoB_loadLibrary(CState *state) {
// register these all to the global table
cosmoV_register(state, 5);
// make string object for CObjStrings
// sub
cosmoV_pushString(state, "sub");
cosmoV_pushCFunction(state, cosmoB_sSub);
cosmoV_makeObject(state, 1);
StkPtr obj = cosmoV_pop(state);
state->protoObjects[COBJ_STRING] = cosmoV_readObject(*obj);
}
// ================================================================ [DEBUG] ================================================================
int cosmoB_dsetProto(CState *state, int nargs, CValue *args) {
if (nargs == 2) {
CObjObject *obj = cosmoV_readObject(args[0]); // object to set proto too
CObj *obj = cosmoV_readObj(args[0]); // object to set proto too
CObjObject *proto = cosmoV_readObject(args[1]);
obj->proto = proto; // boom done
@ -153,7 +164,7 @@ int cosmoB_dgetProto(CState *state, int nargs, CValue *args) {
cosmoV_error(state, "Expected 1 argument, got %d!", nargs);
}
cosmoV_pushValue(state, cosmoV_newObj(cosmoV_readObject(args[0])->proto)); // just return the proto
cosmoV_pushValue(state, cosmoV_newObj(cosmoV_readObject(args[0])->_obj.proto)); // just return the proto
return 1; // 1 result
}
@ -179,6 +190,6 @@ void cosmoB_loadDebug(CState *state) {
// we call makeObject leting it know there are 2 sets of key & value pairs on the stack
cosmoV_makeObject(state, 2);
// set debug proto to the debug object
state->protoObj = cosmoV_readObject(*cosmoV_pop(state));
// set debug protos to the debug object
state->protoObjects[COBJ_OBJECT] = cosmoV_readObject(*cosmoV_pop(state));
}

6
src/cmem.c
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@ -85,6 +85,7 @@ void markArray(CState *state, CValueArray *array) {
// mark all references associated with the object
void blackenObject(CState *state, CObj *obj) {
markObject(state, (CObj*)obj->proto);
switch (obj->type) {
case COBJ_STRING:
case COBJ_CFUNCTION:
@ -94,7 +95,6 @@ void blackenObject(CState *state, CObj *obj) {
// mark everything this object is keeping track of
CObjObject *cobj = (CObjObject*)obj;
markTable(state, &cobj->tbl);
markObject(state, (CObj*)cobj->proto);
break;
}
case COBJ_DICT: { // dictionaries are just wrappers for CTable
@ -243,9 +243,11 @@ void markRoots(CState *state) {
markUserRoots(state);
// mark other misc. internally reserved objects
markObject(state, (CObj*)state->protoObj);
markObject(state, (CObj*)state->error);
for (int i = 0; i < COBJ_MAX; i++)
markObject(state, (CObj*)state->protoObjects[i]);
traceGrays(state);
}

59
src/cobj.c
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@ -22,6 +22,7 @@ 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];
obj->next = state->objects;
state->objects = obj;
@ -88,6 +89,7 @@ void cosmoO_free(CState *state, CObj* obj) {
cosmoM_free(state, CObjClosure, closure);
break;
}
case COBJ_MAX: { /* stubbed, should never happen */ }
}
}
@ -110,7 +112,6 @@ bool cosmoO_equal(CObj* obj1, CObj* obj2) {
CObjObject *cosmoO_newObject(CState *state) {
CObjObject *obj = (CObjObject*)cosmoO_allocateBase(state, sizeof(CObjObject), COBJ_OBJECT);
obj->proto = state->protoObj;
obj->istringFlags = 0;
obj->userP = NULL; // reserved for C API
cosmoV_pushValue(state, cosmoV_newObj(obj)); // so our GC can keep track of it
@ -164,16 +165,9 @@ CObjError *cosmoO_newError(CState *state, CValue err) {
return cerror;
}
CObjMethod *cosmoO_newCMethod(CState *state, CObjCFunction *func, CObjObject *obj) {
CObjMethod *cosmoO_newMethod(CState *state, CValue func, CObj *obj) {
CObjMethod *method = (CObjMethod*)cosmoO_allocateBase(state, sizeof(CObjMethod), COBJ_METHOD);
method->func = cosmoV_newObj(func);
method->obj = obj;
return method;
}
CObjMethod *cosmoO_newMethod(CState *state, CObjClosure *func, CObjObject *obj) {
CObjMethod *method = (CObjMethod*)cosmoO_allocateBase(state, sizeof(CObjMethod), COBJ_METHOD);
method->func = cosmoV_newObj(func);
method->func = func;
method->obj = obj;
return method;
}
@ -304,8 +298,10 @@ bool cosmoO_getRawObject(CState *state, CObjObject *object, CValue key, CValue *
return true;
}
if (object->proto != NULL && cosmoO_getRawObject(state, object->proto, key, val))
if (object->_obj.proto != NULL && cosmoO_getRawObject(state, object->_obj.proto, key, val))
return true;
*val = cosmoV_newNil();
return false; // no protoobject to check against / key not found
}
@ -325,7 +321,7 @@ void cosmoO_setRawObject(CState *state, CObjObject *object, CValue key, CValue v
}
// if the key is an IString, we need to reset the cache
if (IS_STRING(key) && ((CObjString*)cosmoV_readObj(key))->isIString)
if (IS_STRING(key) && cosmoV_readString(key)->isIString)
object->istringFlags = 0; // reset cache
if (IS_NIL(val)) { // if we're setting an index to nil, we can safely mark that as a tombstone
@ -371,7 +367,7 @@ bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val)
do {
if (rawgetIString(state, obj, flag, val))
return true;
} while ((obj = obj->proto) != NULL); // sets obj to it's proto and compares it to NULL
} while ((obj = obj->_obj.proto) != NULL); // sets obj to it's proto and compares it to NULL
return false; // obj->proto was false, the istring doesn't exist in this object chain
}
@ -409,25 +405,13 @@ bool cosmoO_newIndexObject(CState *state, CObjObject *object, CValue key, CValue
}
CObjString *cosmoO_toString(CState *state, CObj *obj) {
switch (obj->type) {
case COBJ_STRING: {
return (CObjString*)obj;
}
case COBJ_CLOSURE: { // should be transparent to the user imo
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));
}
case COBJ_OBJECT: {
CObjObject *object = (CObjObject*)obj;
CObjObject *protoObject = cosmoO_grabProto(obj);
CValue res;
if (cosmoO_getIString(state, object, ISTRING_TOSTRING, &res)) {
// use user-defined __tostring
if (protoObject != NULL && cosmoO_getIString(state, protoObject, ISTRING_TOSTRING, &res)) {
cosmoV_pushValue(state, res);
cosmoV_pushValue(state, cosmoV_newObj(object));
cosmoV_pushValue(state, cosmoV_newObj(obj));
if (cosmoV_call(state, 1, 1) != COSMOVM_OK)
return cosmoO_copyString(state, "<err>", 5);
@ -441,12 +425,25 @@ CObjString *cosmoO_toString(CState *state, CObj *obj) {
// return string
cosmoV_pop(state);
return (CObjString*)cosmoV_readObj(*ret);
} else {
}
switch (obj->type) {
case COBJ_STRING: {
return (CObjString*)obj;
}
case COBJ_CLOSURE: { // should be transparent to the user imo
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));
}
case COBJ_OBJECT: {
char buf[64];
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;
return cosmoV_toString(state, err->err);

35
src/cobj.h
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@ -2,14 +2,6 @@
#define COBJ_H
#include "cosmo.h"
#include "cstate.h"
#include "cchunk.h"
#include "cvalue.h"
#include "ctable.h"
typedef struct CState CState;
typedef struct CCallFrame CCallFrame;
typedef uint32_t cosmo_Flag;
typedef enum {
COBJ_STRING,
@ -22,8 +14,18 @@ typedef enum {
COBJ_METHOD,
COBJ_CLOSURE,
COBJ_UPVALUE,
COBJ_MAX
} CObjType;
#include "cstate.h"
#include "cchunk.h"
#include "cvalue.h"
#include "ctable.h"
typedef struct CState CState;
typedef struct CCallFrame CCallFrame;
typedef uint32_t cosmo_Flag;
#define CommonHeader CObj _obj
#define readFlag(x, flag) (x & (1u << flag))
#define setFlagOn(x, flag) (x |= (1u << flag))
@ -35,6 +37,7 @@ typedef struct CObj {
bool isMarked; // for the GC
struct CObj *next;
struct CObj *nextRoot; // for the root linked list
struct CObjObject *proto; // protoobject, describes the behavior of the object
} CObj;
typedef struct CObjString {
@ -62,7 +65,6 @@ typedef struct CObjObject {
void *userP;
int userI;
};
struct CObjObject *proto; // protoobject, describes the behavior of the object
} CObjObject;
typedef struct CObjDict { // dictionary, a wrapper for CTable
@ -94,7 +96,7 @@ typedef struct CObjClosure {
typedef struct CObjMethod {
CommonHeader; // "is a " CObj
CObjObject *obj; // obj this method is bound too
CObj *obj; // obj this method is bound too
CValue func;
} CObjMethod;
@ -141,12 +143,21 @@ CObjDict *cosmoO_newDictionary(CState *state);
CObjFunction *cosmoO_newFunction(CState *state);
CObjCFunction *cosmoO_newCFunction(CState *state, CosmoCFunction func);
CObjError *cosmoO_newError(CState *state, CValue err);
CObjMethod *cosmoO_newMethod(CState *state, CObjClosure *func, CObjObject *obj);
CObjMethod *cosmoO_newCMethod(CState *state, CObjCFunction *func, CObjObject *obj);
CObjMethod *cosmoO_newMethod(CState *state, CValue func, CObj *obj);
CObjClosure *cosmoO_newClosure(CState *state, CObjFunction *func);
CObjString *cosmoO_toString(CState *state, CObj *val);
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) {
CObjObject *object = obj->proto;
if (obj->type == COBJ_OBJECT)
object = (CObjObject*)obj;
return object;
}
bool cosmoO_getRawObject(CState *state, CObjObject *object, CValue key, CValue *val);
void cosmoO_setRawObject(CState *state, CObjObject *object, CValue key, CValue val);
bool cosmoO_indexObject(CState *state, CObjObject *object, CValue key, CValue *val);

2
src/cparse.c
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@ -1357,7 +1357,7 @@ static void forLoop(CParseState *pstate) {
startLoop(pstate);
int iteratorStart = getChunk(pstate)->count;
expression(pstate, 0, true);
expressionPrecedence(pstate, 0, PREC_ASSIGNMENT, true); // any expression (including assignment)
consume(pstate, TOKEN_RIGHT_PAREN, "Expected ')' after iterator");
writeJmpBack(pstate, loopStart);

5
src/cstate.c
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@ -32,7 +32,6 @@ CState *cosmoV_newState() {
state->frameCount = 0;
state->openUpvalues = NULL;
state->protoObj = NULL;
state->error = NULL;
cosmoT_initTable(state, &state->strings, 8); // init string table
@ -63,6 +62,10 @@ CState *cosmoV_newState() {
for (int i = 0; i < ISTRING_MAX; i++)
state->iStrings[i]->isIString = true;
// set default proto objects
for (int i = 0; i < COBJ_MAX; i++)
state->protoObjects[i] = NULL;
return state;
}

4
src/cstate.h
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@ -2,8 +2,8 @@
#define CSTATE_H
#include "cosmo.h"
#include "cvalue.h"
#include "cobj.h"
#include "cvalue.h"
#include "ctable.h"
typedef struct CCallFrame {
@ -36,7 +36,6 @@ typedef struct CState {
int freezeGC; // when > 0, GC events will be ignored (for internal use)
int frameCount;
CObjObject *protoObj; // start met obj for all objects (NULL by default)
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
@ -49,6 +48,7 @@ typedef struct CState {
CTable globals;
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
CCallFrame callFrame[FRAME_MAX]; // call frames
CValue stack[STACK_MAX]; // stack

185
src/cvm.c
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@ -173,7 +173,7 @@ void cosmoV_concat(CState *state, int vals) {
}
int cosmoV_execute(CState *state);
bool invokeMethod(CState* state, CObjObject *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.
@ -293,12 +293,12 @@ bool callCValue(CState *state, CValue func, int args, int nresults, int offset)
case COBJ_OBJECT: { // object is being instantiated, making another object
CObjObject *protoObj = (CObjObject*)cosmoV_readObj(func);
CObjObject *newObj = cosmoO_newObject(state);
newObj->proto = protoObj;
newObj->_obj.proto = protoObj;
CValue ret;
// check if they defined an initializer (we accept 0 return values)
if (cosmoO_getIString(state, protoObj, ISTRING_INIT, &ret)) {
if (!invokeMethod(state, newObj, ret, args, 0, offset + 1))
if (!invokeMethod(state, (CObj*)newObj, ret, args, 0, offset + 1))
return false;
} else {
// no default initializer
@ -324,7 +324,7 @@ bool callCValue(CState *state, CValue func, int args, int nresults, int offset)
return true;
}
bool invokeMethod(CState* state, CObjObject *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_newObj(obj);
@ -409,25 +409,44 @@ COSMO_API void cosmoV_makeDictionary(CState *state, int pairs) {
cosmoV_pushValue(state, cosmoV_newObj(newObj));
}
COSMO_API bool cosmoV_getObject(CState *state, CObjObject *object, CValue key, CValue *val) {
COSMO_API bool cosmoV_get(CState *state, CObj *_obj, CValue key, CValue *val) {
CObjObject *object = cosmoO_grabProto(_obj);
// no proto to get from
if (object == NULL) {
cosmoV_error(state, "No proto defined! Couldn't get from type %s", cosmoO_typeStr(_obj));
*val = cosmoV_newNil();
return false;
}
cosmoV_pushValue(state, cosmoV_newObj(object));
if (cosmoO_getRawObject(state, object, key, val)) {
if (IS_OBJ(*val)) {
if (cosmoV_readObj(*val)->type == COBJ_CLOSURE) { // is it a function? if so, make it a method to the current object
CObjMethod *method = cosmoO_newMethod(state, (CObjClosure*)cosmoV_readObj(*val), object);
*val = cosmoV_newObj(method);
} else if (cosmoV_readObj(*val)->type == COBJ_CFUNCTION) {
CObjMethod *method = cosmoO_newCMethod(state, (CObjCFunction*)cosmoV_readObj(*val), object);
// is it a function? if so, make it a method to the current object
if (IS_OBJ(*val) && (cosmoV_readObj(*val)->type == COBJ_CLOSURE || cosmoV_readObj(*val)->type == COBJ_CFUNCTION)) {
CObjMethod *method = cosmoO_newMethod(state, *val, _obj);
*val = cosmoV_newObj(method);
} // else, just pass the raw object
}
cosmoV_pop(state);
return true;
}
cosmoV_pop(state);
return true;
}
COSMO_API bool cosmoV_set(CState *state, CObj *_obj, CValue key, CValue val) {
CObjObject *object = cosmoO_grabProto(_obj);
// no proto to set to
if (object == NULL) {
cosmoV_error(state, "No proto defined! Couldn't set to type %s", cosmoO_typeStr(_obj));
return false;
}
cosmoO_setRawObject(state, object, key, val);
return true;
}
int _dict__next(CState *state, int nargs, CValue *args) {
@ -615,17 +634,19 @@ int cosmoV_execute(CState *state) {
cosmoT_get(&dict->tbl, *key, &val);
break;
}
case COBJ_OBJECT: { // check for __index
CObjObject *object = (CObjObject*)cosmoV_readObj(*temp);
default: { // check for __index metamethod
CObjObject *object = cosmoO_grabProto(cosmoV_readObj(*temp));
if (object == NULL) {
cosmoV_error(state, "No proto defined! Couldn't __index from type %s", cosmoV_typeStr(*temp));
return -1;
}
if (!cosmoO_indexObject(state, object, *key, &val)) // if returns false, cosmoV_error was called
return -1;
break;
}
default:
cosmoV_error(state, "Couldn't index type %s!", cosmoV_typeStr(*temp));
return -1;
}
cosmoV_setTop(state, 2); // pops the object & the key
@ -651,17 +672,19 @@ int cosmoV_execute(CState *state) {
*newVal = *value; // set the index
break;
}
case COBJ_OBJECT: { // check for __newindex
CObjObject *object = (CObjObject*)cosmoV_readObj(*temp);
default: { // check for __newindex
CObjObject *object = cosmoO_grabProto(cosmoV_readObj(*temp));
if (object == NULL) {
cosmoV_error(state, "No proto defined! Couldn't __newindex from type %s", cosmoV_typeStr(*temp));
return -1;
}
if (!cosmoO_newIndexObject(state, object, *key, *value)) // if it returns false, cosmoV_error was called
return -1;
break;
}
default:
cosmoV_error(state, "Couldn't set index with type %s!", cosmoV_typeStr(*temp));
return -1;
}
// pop everything off the stack
@ -692,14 +715,8 @@ int cosmoV_execute(CState *state) {
cosmoT_get(&dict->tbl, constants[ident], &val);
break;
}
case COBJ_OBJECT: {
CObjObject *object = (CObjObject*)cosmoV_readObj(*temp);
cosmoV_getObject(state, object, constants[ident], &val);
break;
}
default:
cosmoV_error(state, "Couldn't get from type %s!", cosmoV_typeStr(*temp));
if (!cosmoV_get(state, cosmoV_readObj(*temp), constants[ident], &val))
return -1;
}
} else {
@ -726,14 +743,8 @@ int cosmoV_execute(CState *state) {
*newVal = *value; // set the index
break;
}
case COBJ_OBJECT: {
CObjObject *object = (CObjObject*)cosmoV_readObj(*temp);
cosmoO_setRawObject(state, object, constants[ident], *value);
break;
}
default:
cosmoV_error(state, "Couldn't set a field on type %s!", cosmoV_typeStr(*temp));
if (!cosmoV_set(state, cosmoV_readObj(*temp), constants[ident], *value))
return -1;
}
} else {
@ -765,18 +776,20 @@ int cosmoV_execute(CState *state) {
return -1;
break;
}
case COBJ_OBJECT: {
CObjObject *object = (CObjObject*)cosmoV_readObj(*temp);
default: {
CObjObject *object = cosmoO_grabProto(cosmoV_readObj(*temp));
cosmoO_getRawObject(state, object, *key, &val); // we use cosmoO_getRawObject instead of the cosmoV_getObject wrapper so we get the raw value from the object instead of the CObjMethod wrapper
if (object == NULL) {
cosmoV_error(state, "No proto defined! Couldn't get from type %s!", cosmoV_typeStr(*temp));
return -1;
}
cosmoO_getRawObject(state, object, *key, &val); // we use cosmoO_getRawObject instead of the wrapper so we get the raw value from the object instead of the CObjMethod wrapper
// now invoke the method!
invokeMethod(state, object, val, args, nres, 0);
invokeMethod(state, cosmoV_readObj(*temp), val, args, nres, 0);
break;
}
default:
cosmoV_error(state, "Couldn't get from type %s!", cosmoV_typeStr(*temp));
return -1;
}
} else {
cosmoV_error(state, "Couldn't get from type %s!", cosmoV_typeStr(*temp));
@ -793,9 +806,10 @@ int cosmoV_execute(CState *state) {
return -1;
}
switch (cosmoV_readObj(*temp)->type) {
CObj *obj = cosmoV_readObj(*temp);
switch (obj->type) {
case COBJ_DICT: {
CObjDict *dict = (CObjDict*)cosmoV_readObj(*temp);
CObjDict *dict = (CObjDict*)obj;
cosmoV_pushValue(state, cosmoV_newObj(state->iStrings[ISTRING_RESERVED])); // key
cosmoV_pushValue(state, cosmoV_newObj(dict)); // value
@ -810,18 +824,23 @@ int cosmoV_execute(CState *state) {
cosmoO_setUserI(state, obj, 0); // increment for iterator
// make our CObjMethod for OP_NEXT to call
CObjMethod *method = cosmoO_newCMethod(state, dict_next, obj);
CObjMethod *method = cosmoO_newMethod(state, cosmoV_newObj(dict_next), (CObj*)obj);
cosmoV_setTop(state, 2); // pops the object & the dict
cosmoV_pushValue(state, cosmoV_newObj(method)); // pushes the method for OP_NEXT
break;
}
case COBJ_OBJECT: {
CObjObject *obj = cosmoV_readObject(*temp);
default: {
CObjObject *object = cosmoO_grabProto(obj);
CValue val;
if (object == NULL) {
cosmoV_error(state, "No proto defined! Couldn't get from type %s", cosmoO_typeStr(obj));
return -1;
}
// grab __iter & call it
if (cosmoO_getIString(state, obj, ISTRING_ITER, &val)) {
if (cosmoO_getIString(state, object, ISTRING_ITER, &val)) {
cosmoV_pop(state); // pop the object from the stack
cosmoV_pushValue(state, val);
cosmoV_pushValue(state, cosmoV_newObj(obj));
@ -831,13 +850,12 @@ int cosmoV_execute(CState *state) {
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;
}
CObjObject *obj = (CObjObject*)cosmoV_readObj(*iObj);
cosmoV_getObject(state, obj, cosmoV_newObj(state->iStrings[ISTRING_NEXT]), iObj);
// get __next method and place it at the top of the stack
cosmoV_get(state, cosmoV_readObj(*iObj), cosmoV_newObj(state->iStrings[ISTRING_NEXT]), iObj);
} else {
cosmoV_error(state, "Expected iterable object! '__iter' not defined!");
return -1;
@ -845,9 +863,6 @@ int cosmoV_execute(CState *state) {
break;
}
default:
cosmoV_error(state, "Couldn't iterate over non-iterator type %s!", cosmoV_typeStr(*temp));
return -1;
}
break;
}
@ -1005,27 +1020,32 @@ int cosmoV_execute(CState *state) {
}
break;
}
case COBJ_OBJECT: {
CObjObject *object = (CObjObject*)cosmoV_readObj(*temp);
default: {
CObjObject *object = cosmoO_grabProto(cosmoV_readObj(*temp));
CValue val;
if (object == NULL) {
cosmoV_error(state, "No proto defined! Couldn't __index from type %s", cosmoV_typeStr(*temp));
return -1;
}
// call __index
if (cosmoO_indexObject(state, object, *key, &val)) {
if (IS_NUMBER(val)) {
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
// call __newindex
cosmoO_newIndexObject(state, object, *key, cosmoV_newNumber(cosmoV_readNumber(val) + inc));
if (!cosmoO_newIndexObject(state, object, *key, cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
return -1;
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(val));
return -1;
}
} else {
return -1;
}
break;
}
default:
cosmoV_error(state, "Couldn't set index with type %s!", cosmoV_typeStr(*temp));
return -1;
}
} else {
cosmoV_error(state, "Couldn't set index with type %s!", cosmoV_typeStr(*temp));
@ -1043,25 +1063,6 @@ int cosmoV_execute(CState *state) {
// sanity check
if (IS_OBJ(*temp)) {
switch (cosmoV_readObj(*temp)->type) {
case COBJ_OBJECT: {
CObjObject *object = (CObjObject*)cosmoV_readObj(*temp);
CValue val;
cosmoO_getRawObject(state, object, ident, &val);
// pop the object off the stack
cosmoV_pop(state);
// check that it's a number value
if (IS_NUMBER(val)) {
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
cosmoO_setRawObject(state, object, ident, cosmoV_newNumber(cosmoV_readNumber(val) + inc));
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(val));
return -1;
}
break;
}
case COBJ_DICT: {
CObjDict *dict = (CObjDict*)cosmoV_readObj(*temp);
CValue *val = cosmoT_insert(state, &dict->tbl, ident);
@ -1078,9 +1079,27 @@ int cosmoV_execute(CState *state) {
}
break;
}
default:
cosmoV_error(state, "Couldn't set a field on type %s!", cosmoV_typeStr(*temp));
default: {
CObj *obj = cosmoV_readObj(*temp);
CValue val;
if (!cosmoV_get(state, obj, ident, &val))
return -1;
// pop the object off the stack
cosmoV_pop(state);
// check that it's a number value
if (IS_NUMBER(val)) {
cosmoV_pushValue(state, val); // pushes old value onto the stack :)
if (!cosmoV_set(state, obj, ident, cosmoV_newNumber(cosmoV_readNumber(val) + inc)))
return -1;
} else {
cosmoV_error(state, "Expected number, got %s!", cosmoV_typeStr(val));
return -1;
}
break;
}
}
} else {
cosmoV_error(state, "Couldn't set a field on type %s!", cosmoV_typeStr(*temp));

4
src/cvm.h
View File

@ -17,7 +17,6 @@ COSMO_API COSMOVMRESULT cosmoV_call(CState *state, int args, int nresults);
COSMO_API COSMOVMRESULT cosmoV_pcall(CState *state, int args, int nresults);
COSMO_API void cosmoV_makeObject(CState *state, int pairs);
COSMO_API void cosmoV_makeDictionary(CState *state, int pairs);
COSMO_API bool cosmoV_getObject(CState *state, CObjObject *object, CValue key, CValue *val);
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);
@ -25,6 +24,9 @@ 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);
COSMO_API bool cosmoV_get(CState *state, CObj *obj, CValue key, CValue *val);
COSMO_API bool cosmoV_set(CState *state, CObj *obj, CValue key, CValue val);
// nice to have wrappers
// pushes value to the stack