1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/embedding/components/commandhandler/src/nsCommandParams.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,150 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +
1.10 +#ifndef nsCommandParams_h__
1.11 +#define nsCommandParams_h__
1.12 +
1.13 +#include "nsString.h"
1.14 +#include "nsICommandParams.h"
1.15 +#include "nsCOMPtr.h"
1.16 +#include "pldhash.h"
1.17 +
1.18 +
1.19 +
1.20 +class nsCommandParams : public nsICommandParams
1.21 +{
1.22 +public:
1.23 +
1.24 + nsCommandParams();
1.25 + virtual ~nsCommandParams();
1.26 +
1.27 +
1.28 + NS_DECL_ISUPPORTS
1.29 + NS_DECL_NSICOMMANDPARAMS
1.30 +
1.31 + nsresult Init();
1.32 +
1.33 +protected:
1.34 +
1.35 + struct HashEntry : public PLDHashEntryHdr
1.36 + {
1.37 + nsCString mEntryName;
1.38 +
1.39 + uint8_t mEntryType;
1.40 + union {
1.41 +
1.42 + bool mBoolean;
1.43 + int32_t mLong;
1.44 + double mDouble;
1.45 + nsString* mString;
1.46 + nsCString* mCString;
1.47 + } mData;
1.48 +
1.49 + nsCOMPtr<nsISupports> mISupports;
1.50 +
1.51 + HashEntry(uint8_t inType, const char * inEntryName)
1.52 + : mEntryName(inEntryName)
1.53 + , mEntryType(inType)
1.54 + {
1.55 + memset(&mData, 0, sizeof(mData));
1.56 + Reset(mEntryType);
1.57 + }
1.58 +
1.59 + HashEntry(const HashEntry& inRHS)
1.60 + : mEntryType(inRHS.mEntryType)
1.61 + {
1.62 + Reset(mEntryType);
1.63 + switch (mEntryType)
1.64 + {
1.65 + case eBooleanType: mData.mBoolean = inRHS.mData.mBoolean; break;
1.66 + case eLongType: mData.mLong = inRHS.mData.mLong; break;
1.67 + case eDoubleType: mData.mDouble = inRHS.mData.mDouble; break;
1.68 + case eWStringType:
1.69 + NS_ASSERTION(inRHS.mData.mString, "Source entry has no string");
1.70 + mData.mString = new nsString(*inRHS.mData.mString);
1.71 + break;
1.72 + case eStringType:
1.73 + NS_ASSERTION(inRHS.mData.mCString, "Source entry has no string");
1.74 + mData.mCString = new nsCString(*inRHS.mData.mCString);
1.75 + break;
1.76 + case eISupportsType:
1.77 + mISupports = inRHS.mISupports.get(); // additional addref
1.78 + break;
1.79 + default:
1.80 + NS_ERROR("Unknown type");
1.81 + }
1.82 + }
1.83 +
1.84 + ~HashEntry()
1.85 + {
1.86 + if (mEntryType == eWStringType)
1.87 + delete mData.mString;
1.88 + else if (mEntryType == eStringType)
1.89 + delete mData.mCString;
1.90 + }
1.91 +
1.92 + void Reset(uint8_t inNewType)
1.93 + {
1.94 + switch (mEntryType)
1.95 + {
1.96 + case eNoType: break;
1.97 + case eBooleanType: mData.mBoolean = false; break;
1.98 + case eLongType: mData.mLong = 0; break;
1.99 + case eDoubleType: mData.mDouble = 0.0; break;
1.100 + case eWStringType: delete mData.mString; mData.mString = nullptr; break;
1.101 + case eISupportsType: mISupports = nullptr; break; // clear the nsCOMPtr
1.102 + case eStringType: delete mData.mCString; mData.mCString = nullptr; break;
1.103 + default:
1.104 + NS_ERROR("Unknown type");
1.105 + }
1.106 +
1.107 + mEntryType = inNewType;
1.108 + }
1.109 +
1.110 + };
1.111 +
1.112 +
1.113 + HashEntry* GetNamedEntry(const char * name);
1.114 + HashEntry* GetIndexedEntry(int32_t index);
1.115 + uint32_t GetNumEntries();
1.116 +
1.117 + nsresult GetOrMakeEntry(const char * name, uint8_t entryType, HashEntry*& outEntry);
1.118 +
1.119 +protected:
1.120 +
1.121 + static PLDHashNumber HashKey(PLDHashTable *table, const void *key);
1.122 +
1.123 + static bool HashMatchEntry(PLDHashTable *table,
1.124 + const PLDHashEntryHdr *entry, const void *key);
1.125 +
1.126 + static void HashMoveEntry(PLDHashTable *table, const PLDHashEntryHdr *from,
1.127 + PLDHashEntryHdr *to);
1.128 +
1.129 + static void HashClearEntry(PLDHashTable *table, PLDHashEntryHdr *entry);
1.130 +
1.131 +
1.132 +protected:
1.133 +
1.134 + enum {
1.135 + eNumEntriesUnknown = -1
1.136 + };
1.137 +
1.138 + // this is going to have to use a pldhash, because we need to
1.139 + // be able to iterate through entries, passing names back
1.140 + // to the caller, which means that we need to store the names
1.141 + // internally.
1.142 +
1.143 + PLDHashTable mValuesHash;
1.144 +
1.145 + // enumerator data
1.146 + int32_t mCurEntry;
1.147 + int32_t mNumEntries; // number of entries at start of enumeration (-1 indicates not known)
1.148 +
1.149 + static const PLDHashTableOps sHashOps;
1.150 +};
1.151 +
1.152 +
1.153 +#endif // nsCommandParams_h__
