Local Variables 22

src/clox/container/dynarray.d

@@ -0,0 +1,45 @@
+module clox.container.dynarray;
+
+import clox.memory;
+
+struct DynArray(T){
+	size_t count;
+	size_t capacity;
+	T* ptr;
+	void initialise(){
+		count = 0;
+		capacity = 0;
+		ptr = null;
+	}
+	void opOpAssign(string op: "~")(in T value){
+		if(capacity < count + 1){
+			size_t oldCapacity = capacity;
+			capacity = GROW_CAPACITY(oldCapacity);
+			ptr = GROW_ARRAY!T(ptr, oldCapacity, capacity);
+		}
+		ptr[count] = value;
+		count++;
+	}
+	auto opSlice(){
+		assert(ptr || !count);
+		return ptr[0 .. count];
+	}
+	ref auto opIndex(size_t i){
+		assert(ptr && count);
+		return ptr[i];
+	}
+	size_t opDollar(size_t pos: 0)(){
+		return count;
+	}
+	void free(){
+		if(ptr)
+			FREE_ARRAY!T(ptr, capacity);
+		initialise();
+	}
+	auto pop(){
+		assert(count);
+		count--;
+		return this[count-1];
+	}
+}
+