diff dynamin/core/list.d @ 0:aa4efef0f0b1

Initial commit of code.
author Jordan Miner <jminer7@gmail.com>
date Mon, 15 Jun 2009 22:10:48 -0500
parents
children c138461bf845
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dynamin/core/list.d	Mon Jun 15 22:10:48 2009 -0500
@@ -0,0 +1,190 @@
+// Written in the D programming language
+// www.digitalmars.com/d/
+
+/*
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is the Dynamin library.
+ *
+ * The Initial Developer of the Original Code is Jordan Miner.
+ * Portions created by the Initial Developer are Copyright (C) 2006-2009
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *   Jordan Miner <jminer7@gmail.com>
+ *
+ */
+
+module dynamin.core.list;
+
+import dynamin.core.global;
+import dynamin.core.string;
+import dynamin.core.math;
+import tango.io.Stdout;
+
+// TODO: QuickSearch()
+// TODO: BinarySearch()
+//       MUST use (high + low) >>> 1 to find the average
+// TODO: Search()
+// TODO: QuickSort()
+// TODO: HeapSort()
+// TODO: Sort() - calls HeapSort() so stable sort is default
+// TODO: when D has template inheritance, have separate const_List and List
+class List(T) {
+protected:
+	T[] _data;
+	uint _count;
+	void delegate() whenChanged; // TODO: have an index and length...
+public:
+	this() {
+		this(16, {});
+	}
+	this(uint capacity) {
+		this(capacity, {});
+	}
+	this(void delegate() whenChanged) {
+		this(16, whenChanged);
+	}
+	this(uint capacity, void delegate() whenChanged) {
+		_data = new T[capacity];
+		this.whenChanged = whenChanged;
+	}
+	static List fromArray(T[] arr...) {
+		List list = new List!(T)();
+		list._data = arr.dup;
+		list._count = arr.length;
+		return list;
+	}
+	uint count() {
+		return _count;
+	}
+	uint capacity() {
+		return _data.length;
+	}
+	T[] toArray() {
+		return _data[0.._count].dup;
+	}
+	T[] data() {
+		return _data[0.._count];
+	}
+	/*string toString() {
+		string str = "[";
+		if(Count > 0)
+			str ~= ToString(this[0]);
+		foreach(item; this) {
+			str ~= ", ";
+			str ~= ToString(item);
+		}
+		str ~= "]";
+		return str;
+	}*/
+	protected void maybeEnlarge(uint neededCap) {
+		if(neededCap <= capacity)
+			return;
+		_data.length = max(neededCap, (capacity+1)*2);
+	}
+	T opIndex(uint index) {
+		return _data[0.._count][index];
+	}
+	void push(T item) {
+		add(item);
+	}
+	T pop() {
+		if(_count < 1)
+			throw new Exception("List.Pop() - List is empty");
+		T item = _data[_count-1];
+		// must null out to allow to be collected
+		static if(is(T == class) || is(T == interface))
+			_data[_count-1] = cast(T)null;
+		--_count;
+		whenChanged();
+		return item;
+	}
+	void add(T item) {
+		insert(_count, item);
+	}
+	// TODO: AddRange?
+	void remove(T item) {
+		uint i = find(item);
+		if(i == -1)
+			return;
+		removeRange(i);
+	}
+	void removeRange(uint index, uint length = 1) {
+		arrayCopy!(T)(_data, index+length, _data, index, _count - (index+length));
+		// must null out to allow to be collected
+		static if(is(T == class) || is(T == interface))
+			for(uint i = _count-length; i < _count; ++i)
+				_data[i] = cast(T)null;
+		_count -= length;
+		whenChanged();
+	}
+	void insert(uint index, T item) {
+		maybeEnlarge(_count+1);
+		arrayCopy!(T)(_data, index, _data, index+1, _count - index);
+		_data[index] = item;
+		++_count;
+		whenChanged();
+	}
+	// TODO: InsertRange?
+	void clear() {
+		// must null out to allow to be collected
+		static if(is(T == class) || is(T == interface))
+			for(uint i = 0; i < count; ++i)
+				data[i] = cast(T)null;
+		_count = 0;
+		whenChanged();
+	}
+	uint find(T item) {
+		foreach(i, item2; _data)
+			if(item == item2) // if(item2 == item) would crash on a null item
+				return i;
+		return -1;
+	}
+	//trimCapacity()
+	//opIndex
+	//opIndexAssign
+	//opConcat
+	//opEquals
+	//opSlice
+	//opSliceAssign
+	int opApply(int delegate(inout T item) dg) {
+		for(uint i = 0; i < _count; ++i) {
+			if(int result = dg(_data[i]))
+				return result;
+		}
+		return 0;
+	}
+	//so you can do:
+	//foreach(i, item; list)
+	int opApply(int delegate(inout uint index, inout T item) dg) {
+		for(uint i = 0; i < _count; ++i) {
+			if(int result = dg(i, _data[i]))
+				return result;
+		}
+		return 0;
+	}
+
+}
+unittest {
+	auto list = List!(char).fromArray("Hello, Mat");
+	list.add('t');
+	assert(list.data == "Hello, Matt");
+	assert(list.pop() == 't');
+	list.removeRange(1, 7);
+	assert(list.data == "Hat");
+	list.clear();
+	assert(list.data == "");
+	auto list2 = new List!(string);
+	list2.add("hello");
+	assert(list2.pop() == "hello");
+}
+