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418 lines
10 KiB
C++
418 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsInt64_h__
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#define nsInt64_h__
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#include "prlong.h"
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#include "nscore.h"
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/**
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* This class encapsulates full 64-bit integer functionality and
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* provides simple arithmetic and conversion operations.
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*/
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// If you ever decide that you need to add a non-inline method to this
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// class, be sure to change the class declaration to "class NS_BASE
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// nsInt64".
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template<class T>
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class nsTInt64
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{
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public: //XXX should be private
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T mValue;
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public:
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/**
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* Construct a new 64-bit integer.
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*/
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nsTInt64(void) : mValue(LL_ZERO) {
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}
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/**
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* Construct a new 64-bit integer from a 32-bit signed integer
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*/
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nsTInt64(const PRInt32 aInt32) {
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LL_I2L(mValue, aInt32);
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}
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/**
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* Construct a new 64-bit integer from a 32-bit unsigned integer
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*/
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nsTInt64(const PRUint32 aUint32) {
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LL_UI2L(mValue, aUint32);
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}
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/**
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* Construct a new 64-bit integer from a floating point value.
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*/
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nsTInt64(const PRFloat64 aFloat64) {
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LL_D2L(mValue, aFloat64);
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}
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/**
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* Construct a new 64-bit integer from a native 64-bit integer
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*/
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nsTInt64(const T aInt64) : mValue(aInt64) {
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}
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/**
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* Construct a new 64-bit integer from another 64-bit integer
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*/
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nsTInt64(const nsTInt64& aObject) : mValue(aObject.mValue) {
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}
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// ~nsTInt64(void) -- XXX destructor unnecessary
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/**
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* Assign a 64-bit integer to another 64-bit integer
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*/
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const nsTInt64& operator =(const nsTInt64& aObject) {
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mValue = aObject.mValue;
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return *this;
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}
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/**
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* Convert a 64-bit integer to a signed 32-bit value
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*/
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operator PRInt32(void) const {
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PRInt32 result;
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LL_L2I(result, mValue);
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return result;
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}
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/**
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* Convert a 64-bit integer to an unsigned 32-bit value
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*/
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operator PRUint32(void) const {
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PRUint32 result;
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LL_L2UI(result, mValue);
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return result;
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}
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/**
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* Convert a 64-bit integer to a floating point value
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*/
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operator PRFloat64(void) const {
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PRFloat64 result;
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LL_L2D(result, mValue);
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return result;
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}
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/**
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* Convert a 64-bit integer to a native 64-bit integer.
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*/
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operator T() const {
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return mValue;
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}
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/**
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* Perform unary negation on a 64-bit integer.
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*/
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const nsTInt64 operator -(void) {
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nsTInt64 result;
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LL_NEG(result.mValue, mValue);
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return result;
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}
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// Arithmetic operators
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/**
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* Increment a 64-bit integer by a 64-bit integer amount.
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*/
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nsTInt64& operator +=(const nsTInt64& aObject) {
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LL_ADD(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Decrement a 64-bit integer by a 64-bit integer amount.
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*/
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nsTInt64& operator -=(const nsTInt64& aObject) {
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LL_SUB(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Multiply a 64-bit integer by a 64-bit integer amount.
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*/
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nsTInt64& operator *=(const nsTInt64& aObject) {
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LL_MUL(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Divide a 64-bit integer by a 64-bit integer amount.
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*/
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nsTInt64& operator /=(const nsTInt64& aObject) {
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LL_DIV(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Compute the modulus of a 64-bit integer to a 64-bit value.
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*/
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nsTInt64& operator %=(const nsTInt64& aObject) {
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LL_MOD(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Shift a 64-bit integer left.
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*/
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nsTInt64& operator <<=(int aCount) {
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LL_SHL(mValue, mValue, aCount);
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return *this;
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}
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/**
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* Shift a 64-bit signed integer right.
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*/
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nsTInt64& operator >>=(int aCount) {
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LL_SHR(mValue, mValue, aCount);
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return *this;
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}
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// Comparison operators
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/**
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* Add two 64-bit integers.
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*/
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inline const nsTInt64
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operator +(const nsTInt64& aObject2) const {
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return nsTInt64(*this) += aObject2;
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}
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/**
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* Subtract one 64-bit integer from another.
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*/
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inline const nsTInt64
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operator -(const nsTInt64& aObject2) const {
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return nsTInt64(*this) -= aObject2;
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}
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/**
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* Multiply two 64-bit integers
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*/
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inline const nsTInt64
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operator *(const nsTInt64& aObject2) const {
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return nsTInt64(*this) *= aObject2;
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}
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/**
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* Divide one 64-bit integer by another
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*/
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inline const nsTInt64
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operator /(const nsTInt64& aObject2) const {
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return nsTInt64(*this) /= aObject2;
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}
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/**
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* Compute the modulus of two 64-bit integers
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*/
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inline const nsTInt64
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operator %(const nsTInt64& aObject2) const {
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return nsTInt64(*this) %= aObject2;
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}
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/**
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* Shift left a 64-bit integer
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*/
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inline const nsTInt64
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operator <<(int aCount) const {
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return nsTInt64(*this) <<= aCount;
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}
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/**
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* Shift right a signed 64-bit integer
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*/
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inline const nsTInt64
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operator >>(int aCount) const {
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return nsTInt64(*this) >>= aCount;
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}
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/**
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* Determine if two 64-bit integers are equal
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*/
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inline PRBool
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operator ==(const nsTInt64& aObject2) const {
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return LL_EQ(mValue, aObject2.mValue);
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}
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inline PRBool
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operator ==(T aValue) const {
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return LL_EQ(mValue, aValue);
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}
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/**
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* Determine if two 64-bit integers are not equal
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*/
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inline PRBool
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operator !=(const nsTInt64& aObject2) const {
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return LL_NE(mValue, aObject2.mValue);
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}
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inline PRBool
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operator !=(T aValue) const {
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return LL_NE(mValue, aValue);
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}
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/**
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* Perform a bitwise AND of two 64-bit integers
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*/
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inline const nsTInt64
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operator &(const nsTInt64& aObject2) const {
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return nsTInt64(*this) &= aObject2;
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}
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/**
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* Perform a bitwise OR of two 64-bit integers
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*/
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inline const nsTInt64
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operator |(const nsTInt64& aObject2) const {
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return nsTInt64(*this) |= aObject2;
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}
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/**
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* Perform a bitwise XOR of two 64-bit integers
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*/
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inline const nsTInt64
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operator ^(const nsTInt64& aObject2) const {
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return nsTInt64(*this) ^= aObject2;
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}
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// Bitwise operators
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/**
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* Compute the bitwise NOT of a 64-bit integer
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*/
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const nsTInt64 operator ~(void) const {
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nsTInt64 result;
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LL_NOT(result.mValue, mValue);
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return result;
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}
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/**
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* Compute the bitwise AND with another 64-bit integer
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*/
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nsTInt64& operator &=(const nsTInt64& aObject) {
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LL_AND(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Compute the bitwise OR with another 64-bit integer
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*/
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nsTInt64& operator |=(const nsTInt64& aObject) {
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LL_OR(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Compute the bitwise XOR with another 64-bit integer
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*/
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nsTInt64& operator ^=(const nsTInt64& aObject) {
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LL_XOR(mValue, mValue, aObject.mValue);
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return *this;
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}
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/**
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* Allow doing if (!some_nsInt64)
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*/
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PRBool operator!() const {
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return LL_IS_ZERO(mValue);
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}
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};
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typedef nsTInt64<PRInt64> nsInt64;
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typedef nsTInt64<PRUint64> nsUint64;
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/**
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* Determine if one 64-bit integer is strictly greater than another, using signed values
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*/
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inline PRBool
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operator >(const nsInt64& aObject1, const nsInt64& aObject2) {
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return LL_CMP(aObject1.mValue, >, aObject2.mValue);
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}
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inline PRBool
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operator >(const nsUint64& aObject1, const nsUint64& aObject2) {
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return LL_UCMP(aObject1.mValue, >, aObject2.mValue);
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}
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/**
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* Determine if one 64-bit integer is greater than or equal to another, using signed values
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*/
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inline PRBool
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operator >=(const nsInt64& aObject1, const nsInt64& aObject2) {
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return ! LL_CMP(aObject1.mValue, <, aObject2.mValue);
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}
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inline PRBool
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operator >=(const nsUint64& aObject1, const nsUint64& aObject2) {
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return ! LL_UCMP(aObject1.mValue, <, aObject2.mValue);
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}
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/**
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* Determine if one 64-bit integer is strictly less than another, using signed values
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*/
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inline PRBool
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operator <(const nsInt64& aObject1, const nsInt64& aObject2) {
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return LL_CMP(aObject1.mValue, <, aObject2.mValue);
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}
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inline PRBool
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operator <(const nsUint64& aObject1, const nsUint64& aObject2) {
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return LL_UCMP(aObject1.mValue, <, aObject2.mValue);
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}
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/**
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* Determine if one 64-bit integers is less than or equal to another, using signed values
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*/
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inline PRBool
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operator <=(const nsInt64& aObject1, const nsInt64& aObject2) {
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return ! LL_CMP(aObject1.mValue, >, aObject2.mValue);
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}
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inline PRBool
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operator <=(const nsUint64& aObject1, const nsUint64& aObject2) {
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return ! LL_UCMP(aObject1.mValue, >, aObject2.mValue);
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}
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#endif // nsInt64_h__
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