зеркало из https://github.com/mozilla/gecko-dev.git
138 строки
3.4 KiB
C++
138 строки
3.4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsCommandParams_h__
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#define nsCommandParams_h__
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#include "nsString.h"
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#include "nsICommandParams.h"
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#include "nsCOMPtr.h"
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#include "pldhash.h"
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class nsCommandParams : public nsICommandParams
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{
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public:
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nsCommandParams();
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NS_DECL_ISUPPORTS
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NS_DECL_NSICOMMANDPARAMS
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nsresult Init();
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protected:
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virtual ~nsCommandParams();
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struct HashEntry : public PLDHashEntryHdr
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{
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nsCString mEntryName;
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uint8_t mEntryType;
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union
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{
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bool mBoolean;
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int32_t mLong;
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double mDouble;
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nsString* mString;
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nsCString* mCString;
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} mData;
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nsCOMPtr<nsISupports> mISupports;
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HashEntry(uint8_t aType, const char* aEntryName)
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: mEntryName(aEntryName)
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, mEntryType(aType)
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{
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Reset(mEntryType);
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}
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HashEntry(const HashEntry& aRHS)
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: mEntryType(aRHS.mEntryType)
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{
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Reset(mEntryType);
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switch (mEntryType) {
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case eBooleanType:
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mData.mBoolean = aRHS.mData.mBoolean;
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break;
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case eLongType:
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mData.mLong = aRHS.mData.mLong;
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break;
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case eDoubleType:
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mData.mDouble = aRHS.mData.mDouble;
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break;
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case eWStringType:
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NS_ASSERTION(aRHS.mData.mString, "Source entry has no string");
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mData.mString = new nsString(*aRHS.mData.mString);
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break;
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case eStringType:
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NS_ASSERTION(aRHS.mData.mCString, "Source entry has no string");
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mData.mCString = new nsCString(*aRHS.mData.mCString);
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break;
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case eISupportsType:
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mISupports = aRHS.mISupports.get(); // additional addref
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break;
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default:
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NS_ERROR("Unknown type");
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}
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}
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~HashEntry()
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{
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Reset(eNoType);
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}
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void Reset(uint8_t aNewType)
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{
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switch (mEntryType) {
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case eNoType:
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break;
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case eBooleanType:
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mData.mBoolean = false;
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break;
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case eLongType:
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mData.mLong = 0;
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break;
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case eDoubleType:
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mData.mDouble = 0.0;
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break;
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case eWStringType:
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delete mData.mString;
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mData.mString = nullptr;
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break;
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case eISupportsType:
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mISupports = nullptr; // clear the nsCOMPtr
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break;
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case eStringType:
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delete mData.mCString;
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mData.mCString = nullptr;
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break;
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default:
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NS_ERROR("Unknown type");
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}
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mEntryType = aNewType;
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}
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};
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HashEntry* GetNamedEntry(const char* aName);
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HashEntry* GetOrMakeEntry(const char* aName, uint8_t aEntryType);
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protected:
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static PLDHashNumber HashKey(PLDHashTable* aTable, const void* aKey);
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static bool HashMatchEntry(PLDHashTable* aTable,
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const PLDHashEntryHdr *aEntry, const void* aKey);
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static void HashMoveEntry(PLDHashTable* aTable, const PLDHashEntryHdr* aFrom,
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PLDHashEntryHdr* aTo);
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static void HashClearEntry(PLDHashTable* aTable, PLDHashEntryHdr* aEntry);
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PLDHashTable mValuesHash;
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static const PLDHashTableOps sHashOps;
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};
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#endif // nsCommandParams_h__
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