view src/misc/smallvec.h @ 8949:36b54e6eec1e draft

(svn r12737) -Codechange: Replace vector with a cut down class to allocate space as necessary. This avoids copying data around for vector's push_back() function.
author peter1138 <peter1138@openttd.org>
date Wed, 16 Apr 2008 19:01:09 +0000
parents
children 231bd4dd1f98
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/* $Id$ */

/* @file smallvec.h */

#ifndef SMALLVEC_H
#define SMALLVEC_H

template <typename T, uint S> struct SmallVector {
	T *data;
	uint items;
	uint capacity;

	SmallVector() : data(NULL), items(0), capacity(0) { }

	~SmallVector()
	{
		free(data);
	}

	/**
	 * Append an item and return it.
	 */
	T *Append()
	{
		if (items == capacity) {
			capacity += S;
			data = ReallocT(data, capacity);
		}

		return &data[items++];
	}

	const T *Begin() const
	{
		return data;
	}

	const T *End() const
	{
		return &data[items];
	}
};

#endif /* SMALLVEC_H */