mirror of
https://github.com/CPunch/Cosmo.git
synced 2024-11-05 08:10:05 +00:00
removed 'roots', replaced with a registry table
- removed cosmoM_addRoot - removed cosmoM_removeRoot - renamed cosmoV_register to cosmoV_addGlobals - added cosmoV_addRegistry - added cosmoV_getRegistry - added cosmoV_setProto - added cosmoV_isValueUserType
This commit is contained in:
parent
6701a63a63
commit
bf36412699
4
main.c
4
main.c
@ -75,7 +75,7 @@ static void repl(CState *state)
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cosmoV_pushString(state, "input");
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cosmoV_pushCFunction(state, cosmoB_input);
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cosmoV_register(state, 2);
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cosmoV_addGlobals(state, 2);
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while (_ACTIVE) {
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if (!(line = linenoise("> "))) { // better than gets()
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@ -130,7 +130,7 @@ static bool runFile(CState *state, const char *fileName)
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cosmoV_pushString(state, "input");
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cosmoV_pushCFunction(state, cosmoB_input);
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cosmoV_register(state, 1);
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cosmoV_addGlobals(state, 1);
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ret = interpret(state, script, fileName);
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68
src/cmem.c
68
src/cmem.c
@ -6,6 +6,7 @@
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#include "cstate.h"
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#include "ctable.h"
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#include "cvalue.h"
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#include "cvm.h"
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// realloc wrapper
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void *cosmoM_reallocate(CState *state, void *buf, size_t oldSize, size_t newSize)
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@ -246,22 +247,23 @@ static void sweep(CState *state)
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prev->next = object;
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}
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// call __gc on the object
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CObjObject *protoObject = cosmoO_grabProto(oldObj);
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CValue res;
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// use user-defined __gc
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if (protoObject != NULL && cosmoO_getIString(state, protoObject, ISTRING_GC, &res)) {
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cosmoV_pushValue(state, res);
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cosmoV_pushRef(state, (CObj *)oldObj);
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cosmoV_call(state, 1, 0);
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}
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cosmoO_free(state, oldObj);
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}
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}
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}
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static void markUserRoots(CState *state)
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{
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CObj *root = state->userRoots;
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// traverse userRoots and mark all the object
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while (root != NULL) {
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markObject(state, root);
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root = root->nextRoot;
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}
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}
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static void markRoots(CState *state)
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{
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// mark all values on the stack
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@ -285,8 +287,7 @@ static void markRoots(CState *state)
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for (int i = 0; i < ISTRING_MAX; i++)
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markObject(state, (CObj *)state->iStrings[i]);
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// mark the user defined roots
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markUserRoots(state);
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markTable(state, &state->registry);
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for (int i = 0; i < COBJ_MAX; i++)
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markObject(state, (CObj *)state->protoObjects[i]);
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@ -323,44 +324,3 @@ COSMO_API void cosmoM_updateThreshhold(CState *state)
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{
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state->nextGC = state->allocatedBytes * HEAP_GROW_FACTOR;
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}
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COSMO_API void cosmoM_addRoot(CState *state, CObj *newRoot)
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{
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// first, check and make sure this root doesn't already exist in the list
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CObj *root = state->userRoots;
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while (root != NULL) {
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if (root == newRoot) // found in the list, abort
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return;
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root = root->nextRoot;
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}
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// adds root to userRoot linked list
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newRoot->nextRoot = state->userRoots;
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state->userRoots = newRoot;
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}
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COSMO_API void cosmoM_removeRoot(CState *state, CObj *oldRoot)
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{
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CObj *prev = NULL;
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CObj *root = state->userRoots;
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// traverse the userRoot linked list
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while (root != NULL) {
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if (root == oldRoot) { // found root in list
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// remove from the linked list
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if (prev == NULL) {
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state->userRoots = root->nextRoot;
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} else {
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prev->nextRoot = root->nextRoot;
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}
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root->nextRoot = NULL;
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break;
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}
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prev = root;
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root = root->nextRoot;
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}
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}
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@ -67,13 +67,6 @@ COSMO_API bool cosmoM_checkGarbage(CState *state,
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COSMO_API void cosmoM_collectGarbage(CState *state);
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COSMO_API void cosmoM_updateThreshhold(CState *state);
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// lets the VM know you are holding a reference to a CObj and to not free it
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// NOTE: prefer to use the stack when possible
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COSMO_API void cosmoM_addRoot(CState *state, CObj *newRoot);
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// lets the VM know this root is no longer held in a reference and is able to be freed
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COSMO_API void cosmoM_removeRoot(CState *state, CObj *oldRoot);
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// wrapper for cosmoM_reallocate so we can track our memory usage
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static inline void *cosmoM_xmalloc(CState *state, size_t sz)
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{
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10
src/cobj.c
10
src/cobj.c
@ -31,7 +31,6 @@ CObj *cosmoO_allocateBase(CState *state, size_t sz, CObjType type)
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obj->next = state->objects;
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state->objects = obj;
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obj->nextRoot = NULL;
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#ifdef GC_DEBUG
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printf("allocated %s %p\n", cosmoO_typeStr(obj), obj);
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#endif
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@ -51,9 +50,9 @@ void cosmoO_free(CState *state, CObj *obj)
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break;
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}
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case COBJ_OBJECT: {
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CObjObject *objTbl = (CObjObject *)obj;
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cosmoT_clearTable(state, &objTbl->tbl);
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cosmoM_free(state, CObjObject, objTbl);
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CObjObject *objObj = (CObjObject *)obj;
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cosmoT_clearTable(state, &objObj->tbl);
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cosmoM_free(state, CObjObject, objObj);
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break;
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}
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case COBJ_TABLE: {
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@ -492,6 +491,7 @@ void cosmoO_unlock(CObjObject *object)
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object->isLocked = false;
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}
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bool rawgetIString(CState *state, CObjObject *object, int flag, CValue *val)
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{
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if (readFlag(object->istringFlags, flag))
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@ -511,6 +511,8 @@ bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val)
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CObjObject *obj = object;
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do {
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printf("getting flag %d from obj: %p\n", flag, obj);
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fflush(stdout);
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if (rawgetIString(state, obj, flag, val))
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return true;
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} while ((obj = obj->_obj.proto) != NULL); // sets obj to it's proto and compares it to NULL
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@ -34,7 +34,6 @@ typedef int (*CosmoCFunction)(CState *state, int argCount, CValue *args);
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struct CObj
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{
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struct CObj *next;
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struct CObj *nextRoot; // for the root linked list
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struct CObjObject *proto; // protoobject, describes the behavior of the object
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CObjType type;
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bool isMarked; // for the GC
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52
src/cstate.c
52
src/cstate.c
@ -42,7 +42,6 @@ CState *cosmoV_newState()
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// GC
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state->objects = NULL;
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state->userRoots = NULL;
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state->grayStack.count = 0;
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state->grayStack.capacity = 2;
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state->grayStack.array = NULL;
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@ -62,11 +61,13 @@ CState *cosmoV_newState()
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state->iStrings[i] = NULL;
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cosmoT_initTable(state, &state->strings, 16); // init string table
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cosmoT_initTable(state, &state->registry, 16);
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state->globals = cosmoO_newTable(state); // init global table
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// setup all strings used by the VM
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state->iStrings[ISTRING_INIT] = cosmoO_copyString(state, "__init", 6);
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state->iStrings[ISTRING_GC] = cosmoO_copyString(state, "__gc", 4);
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state->iStrings[ISTRING_TOSTRING] = cosmoO_copyString(state, "__tostring", 10);
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state->iStrings[ISTRING_TONUMBER] = cosmoO_copyString(state, "__tonumber", 10);
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state->iStrings[ISTRING_INDEX] = cosmoO_copyString(state, "__index", 7);
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@ -120,6 +121,8 @@ void cosmoV_freeState(CState *state)
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// free our string table (the string table includes the internal VM strings)
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cosmoT_clearTable(state, &state->strings);
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cosmoT_clearTable(state, &state->registry);
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// free our gray stack & finally free the state structure
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cosmoM_freeArray(state, CObj *, state->grayStack.array, state->grayStack.capacity);
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@ -133,7 +136,7 @@ void cosmoV_freeState(CState *state)
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}
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// expects 2*pairs values on the stack, each pair should consist of 1 key and 1 value
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void cosmoV_register(CState *state, int pairs)
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void cosmoV_addGlobals(CState *state, int pairs)
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{
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for (int i = 0; i < pairs; i++) {
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StkPtr key = cosmoV_getTop(state, 1);
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@ -146,6 +149,51 @@ void cosmoV_register(CState *state, int pairs)
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}
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}
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// expects 2*pairs values on the stack, each pair should consist of 1 key and 1 value
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void cosmoV_addRegistry(CState *state, int pairs)
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{
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for (int i = 0; i < pairs; i++) {
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StkPtr key = cosmoV_getTop(state, 1);
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StkPtr val = cosmoV_getTop(state, 0);
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CValue *oldVal = cosmoT_insert(state, &state->registry, *key);
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*oldVal = *val;
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cosmoV_setTop(state, 2); // pops the 2 values off the stack
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}
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}
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// expects 1 key on the stack, pushes result
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void cosmoV_getRegistry(CState *state) {
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CValue key = *cosmoV_pop(state);
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CValue val;
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if (!cosmoT_get(state, &state->registry, key, &val)) {
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cosmoV_error(state, "failed to grab %s from registry", cosmoV_typeStr(key));
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}
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printf("got %s from registry - ", cosmoV_typeStr(val));
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printValue(val);
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printf("\n");
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cosmoV_pushValue(state, val);
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}
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void cosmoV_setProto(CState *state) {
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StkPtr objVal = cosmoV_getTop(state, 1);
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StkPtr protoVal = cosmoV_getTop(state, 0);
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if (!IS_REF(*objVal) || !IS_OBJECT(*protoVal)) {
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cosmoV_error(state, "cannot set %s to proto of type %s", cosmoV_typeStr(*objVal), cosmoV_typeStr(*protoVal));
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}
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// actually set the protos
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CObj *obj = cosmoV_readRef(*objVal);
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CObjObject *proto = cosmoV_readObject(*protoVal);
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obj->proto = proto;
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cosmoV_setTop(state, 2);
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}
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void cosmoV_printStack(CState *state)
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{
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printf("==== [[ stack dump ]] ====\n");
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19
src/cstate.h
19
src/cstate.h
@ -18,6 +18,7 @@ struct CCallFrame
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typedef enum IStringEnum
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{
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ISTRING_INIT, // __init
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ISTRING_GC, // __gc
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ISTRING_TOSTRING, // __tostring
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ISTRING_TONUMBER, // __tonumber
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ISTRING_EQUAL, // __equals
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@ -56,6 +57,7 @@ struct CState
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CObjObject *protoObjects[COBJ_MAX]; // proto object for each COBJ type [NULL = no default proto]
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CObjString *iStrings[ISTRING_MAX]; // strings used internally by the VM, eg. __init, __index
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CTable strings;
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CTable registry;
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ArrayCObj grayStack; // keeps track of which objects *haven't yet* been traversed in our GC, but
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// *have been* found
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@ -63,14 +65,12 @@ struct CState
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CObjTable *globals;
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CValue *top; // top of the stack
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CObj *objects; // tracks all of our allocated objects
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CObj *userRoots; // user definable roots, this holds CObjs that should be considered "roots",
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// lets the VM know you are holding a reference to a CObj in your code
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CPanic *panic;
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int freezeGC; // when > 0, GC events will be ignored (for internal use)
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int frameCount;
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size_t allocatedBytes;
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size_t nextGC; // when allocatedBytes reaches this threshhold, trigger a GC event
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int freezeGC; // when > 0, GC events will be ignored (for internal use)
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int frameCount;
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};
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CPanic *cosmoV_newPanic(CState *state);
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@ -80,7 +80,16 @@ COSMO_API CState *cosmoV_newState();
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COSMO_API void cosmoV_freeState(CState *state);
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// expects 2*pairs values on the stack, each pair should consist of 1 key and 1 value
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COSMO_API void cosmoV_register(CState *state, int pairs);
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COSMO_API void cosmoV_addGlobals(CState *state, int pairs);
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// expects 2*pairs values on the stack, each pair should consist of 1 key and 1 value
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COSMO_API void cosmoV_addRegistry(CState *state, int pairs);
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// expects 1 key on the stack, pushes result
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COSMO_API void cosmoV_getRegistry(CState *state);
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// expects <object>->proto = <object> (2 total) to be on the stack
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COSMO_API void cosmoV_setProto(CState *state);
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COSMO_API void cosmoV_printStack(CState *state);
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44
src/cvm.c
44
src/cvm.c
@ -12,7 +12,7 @@
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#define cosmoV_protect(panic) setjmp(panic->jmp) == 0
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COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...)
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void cosmoV_pushFString(CState *state, const char *format, ...)
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{
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va_list args;
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va_start(args, format);
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@ -21,7 +21,7 @@ COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...)
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}
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// inserts val at state->top - indx - 1, moving everything else up
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COSMO_API void cosmo_insert(CState *state, int indx, CValue val)
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void cosmoV_insert(CState *state, int indx, CValue val)
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{
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StkPtr tmp = cosmoV_getTop(state, indx);
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@ -33,7 +33,7 @@ COSMO_API void cosmo_insert(CState *state, int indx, CValue val)
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state->top++;
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}
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COSMO_API bool cosmoV_undump(CState *state, cosmo_Reader reader, const void *ud)
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bool cosmoV_undump(CState *state, cosmo_Reader reader, const void *ud)
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{
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CObjFunction *func;
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@ -54,7 +54,7 @@ COSMO_API bool cosmoV_undump(CState *state, cosmo_Reader reader, const void *ud)
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// returns false if failed, error will be on the top of the stack. true if successful, closure will
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// be on the top of the stack
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COSMO_API bool cosmoV_compileString(CState *state, const char *src, const char *name)
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bool cosmoV_compileString(CState *state, const char *src, const char *name)
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{
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CObjFunction *func;
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CPanic *panic = cosmoV_newPanic(state);
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@ -77,7 +77,7 @@ COSMO_API bool cosmoV_compileString(CState *state, const char *src, const char *
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return false;
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}
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COSMO_API void cosmoV_printError(CState *state, CObjError *err)
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void cosmoV_printError(CState *state, CObjError *err)
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{
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// print stack trace
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for (int i = 0; i < err->frameCount; i++) {
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@ -439,7 +439,7 @@ static inline bool isFalsey(StkPtr val)
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return IS_NIL(*val) || (IS_BOOLEAN(*val) && !cosmoV_readBoolean(*val));
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}
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COSMO_API CObjObject *cosmoV_makeObject(CState *state, int pairs)
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CObjObject *cosmoV_makeObject(CState *state, int pairs)
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{
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StkPtr key, val;
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CObjObject *newObj = cosmoO_newObject(state);
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@ -460,7 +460,7 @@ COSMO_API CObjObject *cosmoV_makeObject(CState *state, int pairs)
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return newObj;
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}
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COSMO_API bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjObject *obj)
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bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjObject *obj)
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{
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bool replaced = state->protoObjects[objType] != NULL;
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state->protoObjects[objType] = obj;
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@ -469,7 +469,7 @@ COSMO_API bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjO
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CObj *curr = state->objects;
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while (curr != NULL) {
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// update the proto
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if (curr->type == objType && curr->proto != NULL) {
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if (curr != (CObj *)obj && curr->type == objType && curr->proto != NULL) {
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curr->proto = obj;
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}
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curr = curr->next;
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@ -478,7 +478,7 @@ COSMO_API bool cosmoV_registerProtoObject(CState *state, CObjType objType, CObjO
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return replaced;
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}
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COSMO_API void cosmoV_makeTable(CState *state, int pairs)
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void cosmoV_makeTable(CState *state, int pairs)
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{
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StkPtr key, val;
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CObjTable *newObj = cosmoO_newTable(state);
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@ -530,7 +530,7 @@ void cosmoV_rawset(CState *state, CObj *_obj, CValue key, CValue val)
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cosmoO_setRawObject(state, object, key, val, _obj);
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}
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COSMO_API void cosmoV_get(CState *state)
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void cosmoV_get(CState *state)
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{
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CValue val;
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StkPtr obj = cosmoV_getTop(state, 1); // object was pushed first
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@ -548,7 +548,7 @@ COSMO_API void cosmoV_get(CState *state)
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}
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// yes, this would technically make it possible to set fields of types other than <string>. go crazy
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COSMO_API void cosmoV_set(CState *state)
|
||||
void cosmoV_set(CState *state)
|
||||
{
|
||||
StkPtr obj = cosmoV_getTop(state, 2); // object was pushed first
|
||||
StkPtr key = cosmoV_getTop(state, 1); // then the key
|
||||
@ -564,7 +564,7 @@ COSMO_API void cosmoV_set(CState *state)
|
||||
cosmoV_setTop(state, 3);
|
||||
}
|
||||
|
||||
COSMO_API void cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val)
|
||||
void cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val)
|
||||
{
|
||||
cosmoV_rawget(state, obj, key, val);
|
||||
|
||||
@ -578,6 +578,19 @@ COSMO_API void cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *va
|
||||
}
|
||||
}
|
||||
|
||||
bool cosmoV_isValueUserType(CState *state, CValue val, int userType) {
|
||||
if (!IS_OBJECT(val)) {
|
||||
return false;
|
||||
}
|
||||
|
||||
CObjObject *obj = cosmoV_readObject(val);
|
||||
if (obj->userT != userType) {
|
||||
return false;
|
||||
}
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
int _tbl__next(CState *state, int nargs, CValue *args)
|
||||
{
|
||||
if (nargs != 1) {
|
||||
@ -836,7 +849,8 @@ int cosmoV_execute(CState *state)
|
||||
|
||||
CObj *obj = cosmoV_readRef(*temp);
|
||||
CObjObject *proto = cosmoO_grabProto(obj);
|
||||
CValue val; // to hold our value
|
||||
CValue val = cosmoV_newNil(); // to hold our value
|
||||
|
||||
|
||||
if (proto != NULL) {
|
||||
// check for __index metamethod
|
||||
@ -907,7 +921,7 @@ int cosmoV_execute(CState *state)
|
||||
}
|
||||
CASE(OP_GETOBJECT) :
|
||||
{
|
||||
CValue val; // to hold our value
|
||||
CValue val = cosmoV_newNil(); // to hold our value
|
||||
StkPtr temp = cosmoV_getTop(state, 0); // that should be the object
|
||||
uint16_t ident = READUINT(frame); // use for the key
|
||||
|
||||
@ -925,7 +939,7 @@ int cosmoV_execute(CState *state)
|
||||
}
|
||||
CASE(OP_GETMETHOD) :
|
||||
{
|
||||
CValue val; // to hold our value
|
||||
CValue val = cosmoV_newNil(); // to hold our value
|
||||
StkPtr temp = cosmoV_getTop(state, 0); // that should be the object
|
||||
uint16_t ident = READUINT(frame); // use for the key
|
||||
|
||||
|
@ -36,11 +36,11 @@ COSMO_API void cosmoV_pushFString(CState *state, const char *format, ...);
|
||||
COSMO_API void cosmoV_printError(CState *state, CObjError *err);
|
||||
COSMO_API void 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 void cosmoV_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.
|
||||
updates protos for the passed objType if that CObj* has no proto.
|
||||
|
||||
returns true if replacing a previously registered proto object for this type
|
||||
*/
|
||||
@ -72,13 +72,16 @@ COSMO_API bool cosmoV_undump(CState *state, cosmo_Reader reader, const void *ud)
|
||||
COSMO_API void cosmoV_get(CState *state);
|
||||
|
||||
/*
|
||||
expects object to be pushed, then the key, and finally the new value. pops the key & object
|
||||
expects object to be pushed, then the key, and finally the new value. pops the object, key & value
|
||||
*/
|
||||
COSMO_API void cosmoV_set(CState *state);
|
||||
|
||||
// wraps the closure into a CObjMethod, so the function is called as an invoked method
|
||||
COSMO_API void cosmoV_getMethod(CState *state, CObj *obj, CValue key, CValue *val);
|
||||
|
||||
// check if the value at the top of the stack is a <obj> user type
|
||||
COSMO_API bool cosmoV_isValueUserType(CState *state, CValue val, int userType);
|
||||
|
||||
// nice to have wrappers
|
||||
|
||||
// pushes a raw CValue to the stack, might throw an error if the stack is overflowed (with the
|
||||
|
Loading…
Reference in New Issue
Block a user