diff options
Diffstat (limited to 'gsm-receiver/src/lib/decoder/openbtsstuff/Vector.h')
| -rw-r--r-- | gsm-receiver/src/lib/decoder/openbtsstuff/Vector.h | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/gsm-receiver/src/lib/decoder/openbtsstuff/Vector.h b/gsm-receiver/src/lib/decoder/openbtsstuff/Vector.h new file mode 100644 index 0000000..cec278a --- /dev/null +++ b/gsm-receiver/src/lib/decoder/openbtsstuff/Vector.h @@ -0,0 +1,257 @@ +/**@file Simplified Vector template with aliases. */ +/* +* Copyright 2008 Free Software Foundation, Inc. +* +* This software is distributed under the terms of the GNU Public License. +* See the COPYING file in the main directory for details. + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + +*/ + + + + +#ifndef VECTOR_H +#define VECTOR_H + +#include <string.h> +#include <iostream> +#include "Assert.h" + + +/** + A simplified Vector template with aliases. + Unlike std::vector, this class does not support dynamic resizing. + Unlike std::vector, this class does support "aliases" and subvectors. +*/ +template <class T> class Vector { + + // TODO -- Replace memcpy calls with for-loops. + + public: + + /**@name Iterator types. */ + //@{ + typedef T* iterator; + typedef const T* const_iterator; + //@} + + protected: + + T* mData; ///< allocated data block, if any + T* mStart; ///< start of useful data + T* mEnd; ///< end of useful data + 1 + + public: + + /** Return the size of the Vector. */ + size_t size() const + { + assert(mStart>=mData); + assert(mEnd>=mStart); + return mEnd - mStart; + } + + /** Return size in bytes. */ + size_t bytes() const { return size()*sizeof(T); } + + /** Change the size of the Vector, discarding content. */ + void resize(size_t newSize) + { + if (mData!=NULL) delete[] mData; + if (newSize==0) mData=NULL; + else mData = new T[newSize]; + mStart = mData; + mEnd = mStart + newSize; + } + + /** Release memory and clear pointers. */ + void clear() { resize(0); } + + + /** Copy data from another vector. */ + void clone(const Vector<T>& other) + { + resize(other.size()); + memcpy(mData,other.mStart,other.bytes()); + } + + + + + //@{ + + /** Build an empty Vector of a given size. */ + Vector(size_t wSize=0):mData(NULL) { resize(wSize); } + + /** Build a Vector by shifting the data block. */ + Vector(Vector<T>& other) + :mData(other.mData),mStart(other.mStart),mEnd(other.mEnd) + { other.mData=NULL; } + + /** Build a Vector by copying another. */ + Vector(const Vector<T>& other):mData(NULL) { clone(other); } + + /** Build a Vector with explicit values. */ + Vector(T* wData, T* wStart, T* wEnd) + :mData(wData),mStart(wStart),mEnd(wEnd) + { } + + /** Build a vector from an existing block, NOT to be deleted upon destruction. */ + Vector(T* wStart, size_t span) + :mData(NULL),mStart(wStart),mEnd(wStart+span) + { } + + /** Build a Vector by concatenation. */ + Vector(const Vector<T>& other1, const Vector<T>& other2) + :mData(NULL) + { + resize(other1.size()+other2.size()); + memcpy(mStart, other1.mStart, other1.bytes()); + memcpy(mStart+other1.size(), other2.mStart, other2.bytes()); + } + + //@} + + /** Destroy a Vector, deleting held memory. */ + ~Vector() { clear(); } + + + + + //@{ + + /** Assign from another Vector, shifting ownership. */ + void operator=(Vector<T>& other) + { + clear(); + mData=other.mData; + mStart=other.mStart; + mEnd=other.mEnd; + other.mData=NULL; + } + + /** Assign from another Vector, copying. */ + void operator=(const Vector<T>& other) { clone(other); } + + //@} + + + //@{ + + /** Return an alias to a segment of this Vector. */ + Vector<T> segment(size_t start, size_t span) + { + T* wStart = mStart + start; + T* wEnd = wStart + span; + assert(wEnd<=mEnd); + return Vector<T>(NULL,wStart,wEnd); + } + + /** Return an alias to a segment of this Vector. */ + const Vector<T> segment(size_t start, size_t span) const + { + T* wStart = mStart + start; + T* wEnd = wStart + span; + assert(wEnd<=mEnd); + return Vector<T>(NULL,wStart,wEnd); + } + + Vector<T> head(size_t span) { return segment(0,span); } + const Vector<T> head(size_t span) const { return segment(0,span); } + Vector<T> tail(size_t start) { return segment(start,size()-start); } + const Vector<T> tail(size_t start) const { return segment(start,size()-start); } + + /** + Copy part of this Vector to a segment of another Vector. + @param other The other vector. + @param start The start point in the other vector. + @param span The number of elements to copy. + */ + void copyToSegment(Vector<T>& other, size_t start, size_t span) const + { + T* base = other.mStart + start; + assert(base+span<=other.mEnd); + assert(mStart+span<=mEnd); + memcpy(base,mStart,span*sizeof(T)); + } + + /** Copy all of this Vector to a segment of another Vector. */ + void copyToSegment(Vector<T>& other, size_t start=0) const { copyToSegment(other,start,size()); } + + void copyTo(Vector<T>& other) const { copyToSegment(other,0,size()); } + + /** + Copy a segment of this vector into another. + @param other The other vector (to copt into starting at 0.) + @param start The start point in this vector. + @param span The number of elements to copy. + */ + void segmentCopyTo(Vector<T>& other, size_t start, size_t span) + { + T* base = mStart + start; + assert(base+span<=mEnd); + assert(other.mStart+span<=other.mEnd); + memcpy(other.mStart,base,span*sizeof(T)); + } + + void fill(const T& val) + { + T* dp=mStart; + while (dp<mEnd) *dp++=val; + } + + + //@} + + + //@{ + + T& operator[](size_t index) + { + assert(mStart+index<mEnd); + return mStart[index]; + } + + const T& operator[](size_t index) const + { + assert(mStart+index<mEnd); + return mStart[index]; + } + + const T* begin() const { return mStart; } + T* begin() { return mStart; } + const T* end() const { return mEnd; } + T* end() { return mEnd; } + //@} + + +}; + + + + +/** Basic print operator for Vector objects. */ +template <class T> +std::ostream& operator<<(std::ostream& os, const Vector<T>& v) +{ + for (unsigned i=0; i<v.size(); i++) os << v[i] << " "; + return os; +} + + + +#endif +// vim: ts=4 sw=4 |