зеркало из https://github.com/mozilla/gecko-dev.git
345 строки
9.0 KiB
C++
345 строки
9.0 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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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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class nsInt64
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{
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private:
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PRInt64 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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nsInt64(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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nsInt64(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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nsInt64(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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nsInt64(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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nsInt64(const PRInt64 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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nsInt64(const nsInt64& aObject) : mValue(aObject.mValue) {
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}
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// ~nsInt64(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 nsInt64& operator =(const nsInt64& 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 PRInt64(void) 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 nsInt64 operator -(void) {
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nsInt64 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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friend const nsInt64 operator +(const nsInt64& aObject1, const nsInt64& aObject2);
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friend const nsInt64 operator -(const nsInt64& aObject1, const nsInt64& aObject2);
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friend const nsInt64 operator *(const nsInt64& aObject1, const nsInt64& aObject2);
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friend const nsInt64 operator /(const nsInt64& aObject1, const nsInt64& aObject2);
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friend const nsInt64 operator %(const nsInt64& aObject1, const nsInt64& aObject2);
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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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nsInt64& operator +=(const nsInt64& 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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nsInt64& operator -=(const nsInt64& 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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nsInt64& operator *=(const nsInt64& 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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nsInt64& operator /=(const nsInt64& 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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nsInt64& operator %=(const nsInt64& 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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// Comparison operators
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friend PRBool operator ==(const nsInt64& aObject1, const nsInt64& aObject2);
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friend PRBool operator !=(const nsInt64& aObject1, const nsInt64& aObject2);
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friend PRBool operator >(const nsInt64& aObject1, const nsInt64& aObject2);
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friend PRBool operator >=(const nsInt64& aObject1, const nsInt64& aObject2);
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friend PRBool operator <(const nsInt64& aObject1, const nsInt64& aObject2);
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friend PRBool operator <=(const nsInt64& aObject1, const nsInt64& aObject2);
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// Bitwise operators
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friend const nsInt64 operator &(const nsInt64& aObject1, const nsInt64& aObject2);
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friend const nsInt64 operator |(const nsInt64& aObject1, const nsInt64& aObject2);
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friend const nsInt64 operator ^(const nsInt64& aObject1, const nsInt64& aObject2);
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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 nsInt64 operator ~(void) {
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nsInt64 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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nsInt64& operator &=(const nsInt64& 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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nsInt64& operator |=(const nsInt64& 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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nsInt64& operator ^=(const nsInt64& 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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/**
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* Add two 64-bit integers.
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*/
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inline const nsInt64
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operator +(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) += 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 nsInt64
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operator -(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) -= 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 nsInt64
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operator *(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) *= 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 nsInt64
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operator /(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) /= 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 nsInt64
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operator %(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) %= aObject2;
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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 nsInt64& aObject1, const nsInt64& aObject2) {
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return LL_EQ(aObject1.mValue, aObject2.mValue);
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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 nsInt64& aObject1, const nsInt64& aObject2) {
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return LL_NE(aObject1.mValue, aObject2.mValue);
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}
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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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/**
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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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/**
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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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/**
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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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/**
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* Perform a bitwise AND of two 64-bit integers
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*/
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inline const nsInt64
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operator &(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) &= 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 nsInt64
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operator |(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) |= 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 nsInt64
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operator ^(const nsInt64& aObject1, const nsInt64& aObject2) {
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return nsInt64(aObject1) ^= aObject2;
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}
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#endif // nsInt64_h__
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