Tweaks to dictionary for performance

source/toy_literal.h

@@ -8,6 +8,7 @@
 struct Toy_Literal;
 struct Toy_Interpreter;
 struct Toy_LiteralArray;
+struct Toy_Scope;
 typedef int (*Toy_NativeFn)(struct Toy_Interpreter* interpreter, struct Toy_LiteralArray* arguments);
 typedef int (*Toy_HookFn)(struct Toy_Interpreter* interpreter, struct Toy_Literal identifier, struct Toy_Literal alias);
 typedef void (*Toy_PrintFn)(const char*);
@@ -57,7 +58,7 @@ typedef struct Toy_Literal {
 				Toy_NativeFn native; //8
 				Toy_HookFn hook; //8
 			} inner;  //8
-			void* scope; //8
+			struct Toy_Scope* scope; //8
 		} function; //16
 
 		struct { //for variable names

source/toy_literal_dictionary.c

@@ -17,6 +17,10 @@ static void setEntryValues(Toy_private_dictionary_entry* entry, Toy_Literal key,
 }
 
 static Toy_private_dictionary_entry* getEntryArray(Toy_private_dictionary_entry* array, int capacity, Toy_Literal key, unsigned int hash, bool mustExist) {
+	if (!capacity) {
+		return NULL;
+	}
+
 	//find "key", starting at index
 	unsigned int index = hash % capacity;
 	unsigned int start = index;
@@ -122,10 +126,10 @@ static void freeEntryArray(Toy_private_dictionary_entry* array, int capacity) {
 void Toy_initLiteralDictionary(Toy_LiteralDictionary* dictionary) {
 	//HACK: because modulo by 0 is undefined, set the capacity to a non-zero value (and allocate the arrays)
 	dictionary->entries = NULL;
-	dictionary->capacity = TOY_GROW_CAPACITY(0);
+	dictionary->capacity = 0;
 	dictionary->contains = 0;
 	dictionary->count = 0;
-	adjustEntryCapacity(&dictionary->entries, 0, dictionary->capacity);
+	dictionary->capacity = 0;
 }
 
 void Toy_freeLiteralDictionary(Toy_LiteralDictionary* dictionary) {
@@ -215,5 +219,5 @@ void Toy_removeLiteralDictionary(Toy_LiteralDictionary* dictionary, Toy_Literal
 bool Toy_existsLiteralDictionary(Toy_LiteralDictionary* dictionary, Toy_Literal key) {
 	//null & not tombstoned
 	Toy_private_dictionary_entry* entry = getEntryArray(dictionary->entries, dictionary->capacity, key, Toy_hashLiteral(key), false);
-	return !(TOY_IS_NULL(entry->key) && TOY_IS_NULL(entry->value));
+	return entry != NULL && !(TOY_IS_NULL(entry->key) && TOY_IS_NULL(entry->value));
 }

source/toy_scope.c

@@ -209,6 +209,10 @@ Toy_Scope* Toy_popScope(Toy_Scope* scope) {
 }
 
 Toy_Scope* Toy_copyScope(Toy_Scope* original) {
+	if (original == NULL) {
+		return NULL;
+	}
+
 	Toy_Scope* scope = TOY_ALLOCATE(Toy_Scope, 1);
 	scope->ancestor = original->ancestor;
 	Toy_initLiteralDictionary(&scope->variables);