mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-09-10 11:54:40 +00:00
227 lines
6.9 KiB
C++
227 lines
6.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef nsVariant_h
|
|
#define nsVariant_h
|
|
|
|
#include "nsIVariant.h"
|
|
#include "nsStringFwd.h"
|
|
#include "mozilla/Attributes.h"
|
|
#include "nsCycleCollectionParticipant.h"
|
|
|
|
/**
|
|
* Map the nsAUTF8String, nsUTF8String classes to the nsACString and
|
|
* nsCString classes respectively for now. These defines need to be removed
|
|
* once Jag lands his nsUTF8String implementation.
|
|
*/
|
|
#define nsAUTF8String nsACString
|
|
#define nsUTF8String nsCString
|
|
#define PromiseFlatUTF8String PromiseFlatCString
|
|
|
|
/**
|
|
* nsDiscriminatedUnion is a class that nsIVariant implementors can use
|
|
* to hold the underlying data.
|
|
*/
|
|
|
|
class nsDiscriminatedUnion
|
|
{
|
|
public:
|
|
|
|
nsDiscriminatedUnion() : mType(nsIDataType::VTYPE_EMPTY) {}
|
|
nsDiscriminatedUnion(const nsDiscriminatedUnion&) = delete;
|
|
nsDiscriminatedUnion(nsDiscriminatedUnion&&) = delete;
|
|
|
|
~nsDiscriminatedUnion() { Cleanup(); }
|
|
|
|
nsDiscriminatedUnion& operator=(const nsDiscriminatedUnion&) = delete;
|
|
nsDiscriminatedUnion& operator=(nsDiscriminatedUnion&&) = delete;
|
|
|
|
void Cleanup();
|
|
|
|
uint16_t GetType() const { return mType; }
|
|
|
|
nsresult ConvertToInt8(uint8_t* aResult) const;
|
|
nsresult ConvertToInt16(int16_t* aResult) const;
|
|
nsresult ConvertToInt32(int32_t* aResult) const;
|
|
nsresult ConvertToInt64(int64_t* aResult) const;
|
|
nsresult ConvertToUint8(uint8_t* aResult) const;
|
|
nsresult ConvertToUint16(uint16_t* aResult) const;
|
|
nsresult ConvertToUint32(uint32_t* aResult) const;
|
|
nsresult ConvertToUint64(uint64_t* aResult) const;
|
|
nsresult ConvertToFloat(float* aResult) const;
|
|
nsresult ConvertToDouble(double* aResult) const;
|
|
nsresult ConvertToBool(bool* aResult) const;
|
|
nsresult ConvertToChar(char* aResult) const;
|
|
nsresult ConvertToWChar(char16_t* aResult) const;
|
|
|
|
nsresult ConvertToID(nsID* aResult) const;
|
|
|
|
nsresult ConvertToAString(nsAString& aResult) const;
|
|
nsresult ConvertToAUTF8String(nsAUTF8String& aResult) const;
|
|
nsresult ConvertToACString(nsACString& aResult) const;
|
|
nsresult ConvertToString(char** aResult) const;
|
|
nsresult ConvertToWString(char16_t** aResult) const;
|
|
nsresult ConvertToStringWithSize(uint32_t* aSize, char** aStr) const;
|
|
nsresult ConvertToWStringWithSize(uint32_t* aSize, char16_t** aStr) const;
|
|
|
|
nsresult ConvertToISupports(nsISupports** aResult) const;
|
|
nsresult ConvertToInterface(nsIID** aIID, void** aInterface) const;
|
|
nsresult ConvertToArray(uint16_t* aType, nsIID* aIID,
|
|
uint32_t* aCount, void** aPtr) const;
|
|
|
|
nsresult SetFromVariant(nsIVariant* aValue);
|
|
|
|
nsresult SetFromInt8(uint8_t aValue);
|
|
nsresult SetFromInt16(int16_t aValue);
|
|
nsresult SetFromInt32(int32_t aValue);
|
|
nsresult SetFromInt64(int64_t aValue);
|
|
nsresult SetFromUint8(uint8_t aValue);
|
|
nsresult SetFromUint16(uint16_t aValue);
|
|
nsresult SetFromUint32(uint32_t aValue);
|
|
nsresult SetFromUint64(uint64_t aValue);
|
|
nsresult SetFromFloat(float aValue);
|
|
nsresult SetFromDouble(double aValue);
|
|
nsresult SetFromBool(bool aValue);
|
|
nsresult SetFromChar(char aValue);
|
|
nsresult SetFromWChar(char16_t aValue);
|
|
nsresult SetFromID(const nsID& aValue);
|
|
nsresult SetFromAString(const nsAString& aValue);
|
|
nsresult SetFromDOMString(const nsAString& aValue);
|
|
nsresult SetFromAUTF8String(const nsAUTF8String& aValue);
|
|
nsresult SetFromACString(const nsACString& aValue);
|
|
nsresult SetFromString(const char* aValue);
|
|
nsresult SetFromWString(const char16_t* aValue);
|
|
nsresult SetFromISupports(nsISupports* aValue);
|
|
nsresult SetFromInterface(const nsIID& aIID, nsISupports* aValue);
|
|
nsresult SetFromArray(uint16_t aType, const nsIID* aIID, uint32_t aCount,
|
|
void* aValue);
|
|
nsresult SetFromStringWithSize(uint32_t aSize, const char* aValue);
|
|
nsresult SetFromWStringWithSize(uint32_t aSize, const char16_t* aValue);
|
|
|
|
// Like SetFromWStringWithSize, but leaves the string uninitialized. It does
|
|
// does write the null-terminator.
|
|
nsresult AllocateWStringWithSize(uint32_t aSize);
|
|
|
|
nsresult SetToVoid();
|
|
nsresult SetToEmpty();
|
|
nsresult SetToEmptyArray();
|
|
|
|
void Traverse(nsCycleCollectionTraversalCallback& aCb) const;
|
|
|
|
private:
|
|
nsresult ToManageableNumber(nsDiscriminatedUnion* aOutData) const;
|
|
void FreeArray();
|
|
bool String2ID(nsID* aPid) const;
|
|
nsresult ToString(nsACString& aOutString) const;
|
|
|
|
public:
|
|
union
|
|
{
|
|
int8_t mInt8Value;
|
|
int16_t mInt16Value;
|
|
int32_t mInt32Value;
|
|
int64_t mInt64Value;
|
|
uint8_t mUint8Value;
|
|
uint16_t mUint16Value;
|
|
uint32_t mUint32Value;
|
|
uint64_t mUint64Value;
|
|
float mFloatValue;
|
|
double mDoubleValue;
|
|
bool mBoolValue;
|
|
char mCharValue;
|
|
char16_t mWCharValue;
|
|
nsIID mIDValue;
|
|
nsAString* mAStringValue;
|
|
nsAUTF8String* mUTF8StringValue;
|
|
nsACString* mCStringValue;
|
|
struct
|
|
{
|
|
// This is an owning reference that cannot be an nsCOMPtr because
|
|
// nsDiscriminatedUnion needs to be POD. AddRef/Release are manually
|
|
// called on this.
|
|
nsISupports* MOZ_OWNING_REF mInterfaceValue;
|
|
nsIID mInterfaceID;
|
|
} iface;
|
|
struct
|
|
{
|
|
nsIID mArrayInterfaceID;
|
|
void* mArrayValue;
|
|
uint32_t mArrayCount;
|
|
uint16_t mArrayType;
|
|
} array;
|
|
struct
|
|
{
|
|
char* mStringValue;
|
|
uint32_t mStringLength;
|
|
} str;
|
|
struct
|
|
{
|
|
char16_t* mWStringValue;
|
|
uint32_t mWStringLength;
|
|
} wstr;
|
|
} u;
|
|
uint16_t mType;
|
|
};
|
|
|
|
/**
|
|
* nsVariant implements the generic variant support. The xpcom module registers
|
|
* a factory (see NS_VARIANT_CONTRACTID in nsIVariant.idl) that will create
|
|
* these objects. They are created 'empty' and 'writable'.
|
|
*
|
|
* nsIVariant users won't usually need to see this class.
|
|
*/
|
|
class nsVariantBase : public nsIWritableVariant
|
|
{
|
|
public:
|
|
NS_DECL_NSIVARIANT
|
|
NS_DECL_NSIWRITABLEVARIANT
|
|
|
|
nsVariantBase();
|
|
|
|
protected:
|
|
~nsVariantBase() {};
|
|
|
|
nsDiscriminatedUnion mData;
|
|
bool mWritable;
|
|
};
|
|
|
|
class nsVariant final : public nsVariantBase
|
|
{
|
|
public:
|
|
NS_DECL_ISUPPORTS
|
|
|
|
nsVariant() {};
|
|
|
|
private:
|
|
~nsVariant() {};
|
|
};
|
|
|
|
class nsVariantCC final : public nsVariantBase
|
|
{
|
|
public:
|
|
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
|
|
NS_DECL_CYCLE_COLLECTION_CLASS(nsVariantCC)
|
|
|
|
nsVariantCC() {};
|
|
|
|
private:
|
|
~nsVariantCC() {};
|
|
};
|
|
|
|
/**
|
|
* Users of nsIVariant should be using the contractID and not this CID.
|
|
* - see NS_VARIANT_CONTRACTID in nsIVariant.idl.
|
|
*/
|
|
|
|
#define NS_VARIANT_CID \
|
|
{ /* 0D6EA1D0-879C-11d5-90EF-0010A4E73D9A */ \
|
|
0xd6ea1d0, \
|
|
0x879c, \
|
|
0x11d5, \
|
|
{0x90, 0xef, 0x0, 0x10, 0xa4, 0xe7, 0x3d, 0x9a}}
|
|
|
|
#endif // nsVariant_h
|