added support for __newindex

src/cobj.c

@@ -228,9 +228,26 @@ bool cosmoO_getObject(CState *state, CObjObject *object, CValue key, CValue *val
 }
 
 void cosmoO_setObject(CState *state, CObjObject *object, CValue key, CValue val) {
+    CValue ret;
+    
+    // first check for __newindex in the prototype
+    if (object->proto != NULL && cosmoO_getIString(state, object->proto, ISTRING_NEWINDEX, &ret)) {
+        cosmoV_pushValue(state, ret); // push function
+        cosmoV_pushValue(state, cosmoV_newObj(object)); // push object
+        cosmoV_pushValue(state, key); // push key & value pair
+        cosmoV_pushValue(state, val);
+        cosmoV_call(state, 3);
+        cosmoV_pop(state); // pop return value
+        return;
+    }
+
     object->istringFlags = 0; // reset cache
-    CValue *newVal = cosmoT_insert(state, &object->tbl, key);
-    *newVal = val;
+    if (IS_NIL(val)) { // if we're setting an index to nil, we can safely mark that as a tombstone
+        cosmoT_remove(state, &object->tbl, key);
+    } else {
+        CValue *newVal = cosmoT_insert(state, &object->tbl, key);
+        *newVal = val;
+    }
 }
 
 bool cosmoO_getIString(CState *state, CObjObject *object, int flag, CValue *val) {

src/cstate.c

@@ -42,6 +42,8 @@ CState *cosmoV_newState() {
     // setup all strings used by the VM
     state->iStrings[ISTRING_INIT] = cosmoO_copyString(state, "__init", 6);
     state->iStrings[ISTRING_INDEX] = cosmoO_copyString(state, "__index", 7);
+    state->iStrings[ISTRING_NEWINDEX] = cosmoO_copyString(state, "__newindex", 10);
+
     return state;
 }
 

src/cstate.h

@@ -15,7 +15,8 @@ typedef struct CCallFrame {
 typedef enum IStringEnum {
     ISTRING_INIT, // __init
     ISTRING_EQUAL, // __equal
-    ISTRING_INDEX,
+    ISTRING_INDEX, // __index
+    ISTRING_NEWINDEX, // __newindex
     ISTRING_MAX
 } IStringEnum;
 

src/ctable.c

@@ -108,6 +108,9 @@ static CTableEntry *findEntry(CTableEntry *entries, int mask, CValue key) {
 }
 
 static void resizeTbl(CState *state, CTable *tbl, size_t newCapacity) {
+    if (cosmoT_checkShrink(state, tbl))
+        return;
+    
     size_t size = sizeof(CTableEntry) * newCapacity;
     int cachedCount = tbl->count;
     cosmoM_checkGarbage(state, size); // if this allocation would cause a GC, run the GC
@@ -148,7 +151,9 @@ static void resizeTbl(CState *state, CTable *tbl, size_t newCapacity) {
 
 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) {
+    if (tbl->count > MIN_TABLE_CAPACITY && (tbl->count - tbl->tombstones < tbl->tombstones || tbl->tombstones > 50)) {
+        printf("shrinking table!\n");
+        getchar();
         resizeTbl(state, tbl, nextPow2((tbl->count - tbl->tombstones) * GROW_FACTOR)); // shrink based on active entries to the next pow of 2
         return true;
     }