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gecko-dev
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gecko-dev/xpcom/ds/nsVariant.cpp

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58 KiB
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/* -*- 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/. */
#include "nsVariant.h"
#include "prprf.h"
#include "prdtoa.h"
#include <math.h>
#include "nsCycleCollectionParticipant.h"
#include "xptinfo.h"
#include "nsReadableUtils.h"
#include "nsMemory.h"
#include "nsString.h"
#include "nsCRTGlue.h"
#include "mozilla/IntegerPrintfMacros.h"
#include "mozilla/Printf.h"
/***************************************************************************/
// Helpers for static convert functions...
static nsresult String2Double(const char* aString, double* aResult) {
char* next;
double value = PR_strtod(aString, &next);
if (next == aString) {
return NS_ERROR_CANNOT_CONVERT_DATA;
}
*aResult = value;
return NS_OK;
}
static nsresult AString2Double(const nsAString& aString, double* aResult) {
char* pChars = ToNewCString(aString, mozilla::fallible);
if (!pChars) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsresult rv = String2Double(pChars, aResult);
free(pChars);
return rv;
}
static nsresult AUTF8String2Double(const nsAUTF8String& aString,
double* aResult) {
return String2Double(PromiseFlatUTF8String(aString).get(), aResult);
}
static nsresult ACString2Double(const nsACString& aString, double* aResult) {
return String2Double(PromiseFlatCString(aString).get(), aResult);
}
// Fills aOutData with double, uint32_t, or int32_t.
// Returns NS_OK, an error code, or a non-NS_OK success code
nsresult nsDiscriminatedUnion::ToManageableNumber(
nsDiscriminatedUnion* aOutData) const {
nsresult rv;
switch (mType) {
// This group results in a int32_t...
#define CASE__NUMBER_INT32(type_, member_) \
case nsIDataType::type_: \
aOutData->u.mInt32Value = u.member_; \
aOutData->mType = nsIDataType::VTYPE_INT32; \
return NS_OK;
CASE__NUMBER_INT32(VTYPE_INT8, mInt8Value)
CASE__NUMBER_INT32(VTYPE_INT16, mInt16Value)
CASE__NUMBER_INT32(VTYPE_INT32, mInt32Value)
CASE__NUMBER_INT32(VTYPE_UINT8, mUint8Value)
CASE__NUMBER_INT32(VTYPE_UINT16, mUint16Value)
CASE__NUMBER_INT32(VTYPE_BOOL, mBoolValue)
CASE__NUMBER_INT32(VTYPE_CHAR, mCharValue)
CASE__NUMBER_INT32(VTYPE_WCHAR, mWCharValue)
#undef CASE__NUMBER_INT32
// This group results in a uint32_t...
case nsIDataType::VTYPE_UINT32:
aOutData->u.mUint32Value = u.mUint32Value;
aOutData->mType = nsIDataType::VTYPE_UINT32;
return NS_OK;
// This group results in a double...
case nsIDataType::VTYPE_INT64:
case nsIDataType::VTYPE_UINT64:
// XXX Need boundary checking here.
// We may need to return NS_SUCCESS_LOSS_OF_INSIGNIFICANT_DATA
aOutData->u.mDoubleValue = double(u.mInt64Value);
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
case nsIDataType::VTYPE_FLOAT:
aOutData->u.mDoubleValue = u.mFloatValue;
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
case nsIDataType::VTYPE_DOUBLE:
aOutData->u.mDoubleValue = u.mDoubleValue;
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
rv = String2Double(u.str.mStringValue, &aOutData->u.mDoubleValue);
if (NS_FAILED(rv)) {
return rv;
}
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
case nsIDataType::VTYPE_ASTRING:
rv = AString2Double(*u.mAStringValue, &aOutData->u.mDoubleValue);
if (NS_FAILED(rv)) {
return rv;
}
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
case nsIDataType::VTYPE_UTF8STRING:
rv = AUTF8String2Double(*u.mUTF8StringValue, &aOutData->u.mDoubleValue);
if (NS_FAILED(rv)) {
return rv;
}
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
case nsIDataType::VTYPE_CSTRING:
rv = ACString2Double(*u.mCStringValue, &aOutData->u.mDoubleValue);
if (NS_FAILED(rv)) {
return rv;
}
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
rv = AString2Double(nsDependentString(u.wstr.mWStringValue),
&aOutData->u.mDoubleValue);
if (NS_FAILED(rv)) {
return rv;
}
aOutData->mType = nsIDataType::VTYPE_DOUBLE;
return NS_OK;
// This group fails...
case nsIDataType::VTYPE_VOID:
case nsIDataType::VTYPE_ID:
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
case nsIDataType::VTYPE_ARRAY:
case nsIDataType::VTYPE_EMPTY_ARRAY:
case nsIDataType::VTYPE_EMPTY:
default:
return NS_ERROR_CANNOT_CONVERT_DATA;
}
}
/***************************************************************************/
// Array helpers...
void nsDiscriminatedUnion::FreeArray() {
NS_ASSERTION(mType == nsIDataType::VTYPE_ARRAY, "bad FreeArray call");
NS_ASSERTION(u.array.mArrayValue, "bad array");
NS_ASSERTION(u.array.mArrayCount, "bad array count");
#define CASE__FREE_ARRAY_PTR(type_, ctype_) \
case nsIDataType::type_: { \
ctype_** p = (ctype_**)u.array.mArrayValue; \
for (uint32_t i = u.array.mArrayCount; i > 0; p++, i--) \
if (*p) free((char*)*p); \
break; \
}
#define CASE__FREE_ARRAY_IFACE(type_, ctype_) \
case nsIDataType::type_: { \
ctype_** p = (ctype_**)u.array.mArrayValue; \
for (uint32_t i = u.array.mArrayCount; i > 0; p++, i--) \
if (*p) (*p)->Release(); \
break; \
}
switch (u.array.mArrayType) {
case nsIDataType::VTYPE_INT8:
case nsIDataType::VTYPE_INT16:
case nsIDataType::VTYPE_INT32:
case nsIDataType::VTYPE_INT64:
case nsIDataType::VTYPE_UINT8:
case nsIDataType::VTYPE_UINT16:
case nsIDataType::VTYPE_UINT32:
case nsIDataType::VTYPE_UINT64:
case nsIDataType::VTYPE_FLOAT:
case nsIDataType::VTYPE_DOUBLE:
case nsIDataType::VTYPE_BOOL:
case nsIDataType::VTYPE_CHAR:
case nsIDataType::VTYPE_WCHAR:
break;
// XXX We ASSUME that "array of nsID" means "array of pointers to nsID".
CASE__FREE_ARRAY_PTR(VTYPE_ID, nsID)
CASE__FREE_ARRAY_PTR(VTYPE_CHAR_STR, char)
CASE__FREE_ARRAY_PTR(VTYPE_WCHAR_STR, char16_t)
CASE__FREE_ARRAY_IFACE(VTYPE_INTERFACE, nsISupports)
CASE__FREE_ARRAY_IFACE(VTYPE_INTERFACE_IS, nsISupports)
// The rest are illegal.
case nsIDataType::VTYPE_VOID:
case nsIDataType::VTYPE_ASTRING:
case nsIDataType::VTYPE_UTF8STRING:
case nsIDataType::VTYPE_CSTRING:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
case nsIDataType::VTYPE_STRING_SIZE_IS:
case nsIDataType::VTYPE_ARRAY:
case nsIDataType::VTYPE_EMPTY_ARRAY:
case nsIDataType::VTYPE_EMPTY:
default:
NS_ERROR("bad type in array!");
break;
}
// Free the array memory.
free((char*)u.array.mArrayValue);
#undef CASE__FREE_ARRAY_PTR
#undef CASE__FREE_ARRAY_IFACE
}
static nsresult CloneArray(uint16_t aInType, const nsIID* aInIID,
uint32_t aInCount, void* aInValue,
uint16_t* aOutType, nsIID* aOutIID,
uint32_t* aOutCount, void** aOutValue) {
NS_ASSERTION(aInCount, "bad param");
NS_ASSERTION(aInValue, "bad param");
NS_ASSERTION(aOutType, "bad param");
NS_ASSERTION(aOutCount, "bad param");
NS_ASSERTION(aOutValue, "bad param");
uint32_t i;
// First we figure out the size of the elements for the new u.array.
size_t elementSize;
size_t allocSize;
switch (aInType) {
case nsIDataType::VTYPE_INT8:
elementSize = sizeof(int8_t);
break;
case nsIDataType::VTYPE_INT16:
elementSize = sizeof(int16_t);
break;
case nsIDataType::VTYPE_INT32:
elementSize = sizeof(int32_t);
break;
case nsIDataType::VTYPE_INT64:
elementSize = sizeof(int64_t);
break;
case nsIDataType::VTYPE_UINT8:
elementSize = sizeof(uint8_t);
break;
case nsIDataType::VTYPE_UINT16:
elementSize = sizeof(uint16_t);
break;
case nsIDataType::VTYPE_UINT32:
elementSize = sizeof(uint32_t);
break;
case nsIDataType::VTYPE_UINT64:
elementSize = sizeof(uint64_t);
break;
case nsIDataType::VTYPE_FLOAT:
elementSize = sizeof(float);
break;
case nsIDataType::VTYPE_DOUBLE:
elementSize = sizeof(double);
break;
case nsIDataType::VTYPE_BOOL:
elementSize = sizeof(bool);
break;
case nsIDataType::VTYPE_CHAR:
elementSize = sizeof(char);
break;
case nsIDataType::VTYPE_WCHAR:
elementSize = sizeof(char16_t);
break;
// XXX We ASSUME that "array of nsID" means "array of pointers to nsID".
case nsIDataType::VTYPE_ID:
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
elementSize = sizeof(void*);
break;
// The rest are illegal.
case nsIDataType::VTYPE_ASTRING:
case nsIDataType::VTYPE_UTF8STRING:
case nsIDataType::VTYPE_CSTRING:
case nsIDataType::VTYPE_STRING_SIZE_IS:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
case nsIDataType::VTYPE_VOID:
case nsIDataType::VTYPE_ARRAY:
case nsIDataType::VTYPE_EMPTY_ARRAY:
case nsIDataType::VTYPE_EMPTY:
default:
NS_ERROR("bad type in array!");
return NS_ERROR_CANNOT_CONVERT_DATA;
}
// Alloc the u.array.
allocSize = aInCount * elementSize;
*aOutValue = moz_xmalloc(allocSize);
// Clone the elements.
switch (aInType) {
case nsIDataType::VTYPE_INT8:
case nsIDataType::VTYPE_INT16:
case nsIDataType::VTYPE_INT32:
case nsIDataType::VTYPE_INT64:
case nsIDataType::VTYPE_UINT8:
case nsIDataType::VTYPE_UINT16:
case nsIDataType::VTYPE_UINT32:
case nsIDataType::VTYPE_UINT64:
case nsIDataType::VTYPE_FLOAT:
case nsIDataType::VTYPE_DOUBLE:
case nsIDataType::VTYPE_BOOL:
case nsIDataType::VTYPE_CHAR:
case nsIDataType::VTYPE_WCHAR:
memcpy(*aOutValue, aInValue, allocSize);
break;
case nsIDataType::VTYPE_INTERFACE_IS:
if (aOutIID) {
*aOutIID = *aInIID;
}
[[fallthrough]];
case nsIDataType::VTYPE_INTERFACE: {
memcpy(*aOutValue, aInValue, allocSize);
nsISupports** p = (nsISupports**)*aOutValue;
for (i = aInCount; i > 0; ++p, --i)
if (*p) {
(*p)->AddRef();
}
break;
}
// XXX We ASSUME that "array of nsID" means "array of pointers to nsID".
case nsIDataType::VTYPE_ID: {
nsID** inp = (nsID**)aInValue;
nsID** outp = (nsID**)*aOutValue;
for (i = aInCount; i > 0; --i) {
nsID* idp = *(inp++);
if (idp) {
*(outp++) = idp->Clone();
} else {
*(outp++) = nullptr;
}
}
break;
}
case nsIDataType::VTYPE_CHAR_STR: {
char** inp = (char**)aInValue;
char** outp = (char**)*aOutValue;
for (i = aInCount; i > 0; i--) {
char* str = *(inp++);
if (str) {
*(outp++) = moz_xstrdup(str);
} else {
*(outp++) = nullptr;
}
}
break;
}
case nsIDataType::VTYPE_WCHAR_STR: {
char16_t** inp = (char16_t**)aInValue;
char16_t** outp = (char16_t**)*aOutValue;
for (i = aInCount; i > 0; i--) {
char16_t* str = *(inp++);
if (str) {
*(outp++) = NS_xstrdup(str);
} else {
*(outp++) = nullptr;
}
}
break;
}
// The rest are illegal.
case nsIDataType::VTYPE_VOID:
case nsIDataType::VTYPE_ARRAY:
case nsIDataType::VTYPE_EMPTY_ARRAY:
case nsIDataType::VTYPE_EMPTY:
case nsIDataType::VTYPE_ASTRING:
case nsIDataType::VTYPE_UTF8STRING:
case nsIDataType::VTYPE_CSTRING:
case nsIDataType::VTYPE_STRING_SIZE_IS:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
default:
NS_ERROR("bad type in array!");
return NS_ERROR_CANNOT_CONVERT_DATA;
}
*aOutType = aInType;
*aOutCount = aInCount;
return NS_OK;
}
/***************************************************************************/
#define TRIVIAL_DATA_CONVERTER(type_, member_, retval_) \
if (mType == nsIDataType::type_) { \
*retval_ = u.member_; \
return NS_OK; \
}
#define NUMERIC_CONVERSION_METHOD_BEGIN(type_, Ctype_, name_) \
nsresult nsDiscriminatedUnion::ConvertTo##name_(Ctype_* aResult) const { \
TRIVIAL_DATA_CONVERTER(type_, m##name_##Value, aResult) \
nsDiscriminatedUnion tempData; \
nsresult rv = ToManageableNumber(&tempData); \
/* */ \
/* NOTE: rv may indicate a success code that we want to preserve */ \
/* For the final return. So all the return cases below should return */ \
/* this rv when indicating success. */ \
/* */ \
if (NS_FAILED(rv)) return rv; \
switch (tempData.mType) {
#define CASE__NUMERIC_CONVERSION_INT32_JUST_CAST(Ctype_) \
case nsIDataType::VTYPE_INT32: \
*aResult = (Ctype_)tempData.u.mInt32Value; \
return rv;
#define CASE__NUMERIC_CONVERSION_INT32_MIN_MAX(Ctype_, min_, max_) \
case nsIDataType::VTYPE_INT32: { \
int32_t value = tempData.u.mInt32Value; \
if (value < min_ || value > max_) \
return NS_ERROR_LOSS_OF_SIGNIFICANT_DATA; \
*aResult = (Ctype_)value; \
return rv; \
}
#define CASE__NUMERIC_CONVERSION_UINT32_JUST_CAST(Ctype_) \
case nsIDataType::VTYPE_UINT32: \
*aResult = (Ctype_)tempData.u.mUint32Value; \
return rv;
#define CASE__NUMERIC_CONVERSION_UINT32_MAX(Ctype_, max_) \
case nsIDataType::VTYPE_UINT32: { \
uint32_t value = tempData.u.mUint32Value; \
if (value > max_) return NS_ERROR_LOSS_OF_SIGNIFICANT_DATA; \
*aResult = (Ctype_)value; \
return rv; \
}
#define CASE__NUMERIC_CONVERSION_DOUBLE_JUST_CAST(Ctype_) \
case nsIDataType::VTYPE_DOUBLE: \
*aResult = (Ctype_)tempData.u.mDoubleValue; \
return rv;
#define CASE__NUMERIC_CONVERSION_DOUBLE_MIN_MAX(Ctype_, min_, max_) \
case nsIDataType::VTYPE_DOUBLE: { \
double value = tempData.u.mDoubleValue; \
if (value < min_ || value > max_) \
return NS_ERROR_LOSS_OF_SIGNIFICANT_DATA; \
*aResult = (Ctype_)value; \
return rv; \
}
#define CASE__NUMERIC_CONVERSION_DOUBLE_MIN_MAX_INT(Ctype_, min_, max_) \
case nsIDataType::VTYPE_DOUBLE: { \
double value = tempData.u.mDoubleValue; \
if (value < min_ || value > max_) \
return NS_ERROR_LOSS_OF_SIGNIFICANT_DATA; \
*aResult = (Ctype_)value; \
return (0.0 == fmod(value, 1.0)) ? rv \
: NS_SUCCESS_LOSS_OF_INSIGNIFICANT_DATA; \
}
#define CASES__NUMERIC_CONVERSION_NORMAL(Ctype_, min_, max_) \
CASE__NUMERIC_CONVERSION_INT32_MIN_MAX(Ctype_, min_, max_) \
CASE__NUMERIC_CONVERSION_UINT32_MAX(Ctype_, max_) \
CASE__NUMERIC_CONVERSION_DOUBLE_MIN_MAX_INT(Ctype_, min_, max_)
#define NUMERIC_CONVERSION_METHOD_END \
default: \
NS_ERROR("bad type returned from ToManageableNumber"); \
return NS_ERROR_CANNOT_CONVERT_DATA; \
} \
}
#define NUMERIC_CONVERSION_METHOD_NORMAL(type_, Ctype_, name_, min_, max_) \
NUMERIC_CONVERSION_METHOD_BEGIN(type_, Ctype_, name_) \
CASES__NUMERIC_CONVERSION_NORMAL(Ctype_, min_, max_) \
NUMERIC_CONVERSION_METHOD_END
/***************************************************************************/
// These expand into full public methods...
NUMERIC_CONVERSION_METHOD_NORMAL(VTYPE_INT8, uint8_t, Int8, (-127 - 1), 127)
NUMERIC_CONVERSION_METHOD_NORMAL(VTYPE_INT16, int16_t, Int16, (-32767 - 1),
32767)
NUMERIC_CONVERSION_METHOD_BEGIN(VTYPE_INT32, int32_t, Int32)
CASE__NUMERIC_CONVERSION_INT32_JUST_CAST(int32_t)
CASE__NUMERIC_CONVERSION_UINT32_MAX(int32_t, 2147483647)
CASE__NUMERIC_CONVERSION_DOUBLE_MIN_MAX_INT(int32_t, (-2147483647 - 1),
2147483647)
NUMERIC_CONVERSION_METHOD_END
NUMERIC_CONVERSION_METHOD_NORMAL(VTYPE_UINT8, uint8_t, Uint8, 0, 255)
NUMERIC_CONVERSION_METHOD_NORMAL(VTYPE_UINT16, uint16_t, Uint16, 0, 65535)
NUMERIC_CONVERSION_METHOD_BEGIN(VTYPE_UINT32, uint32_t, Uint32)
CASE__NUMERIC_CONVERSION_INT32_MIN_MAX(uint32_t, 0, 2147483647)
CASE__NUMERIC_CONVERSION_UINT32_JUST_CAST(uint32_t)
CASE__NUMERIC_CONVERSION_DOUBLE_MIN_MAX_INT(uint32_t, 0, 4294967295U)
NUMERIC_CONVERSION_METHOD_END
// XXX toFloat convertions need to be fixed!
NUMERIC_CONVERSION_METHOD_BEGIN(VTYPE_FLOAT, float, Float)
CASE__NUMERIC_CONVERSION_INT32_JUST_CAST(float)
CASE__NUMERIC_CONVERSION_UINT32_JUST_CAST(float)
CASE__NUMERIC_CONVERSION_DOUBLE_JUST_CAST(float)
NUMERIC_CONVERSION_METHOD_END
NUMERIC_CONVERSION_METHOD_BEGIN(VTYPE_DOUBLE, double, Double)
CASE__NUMERIC_CONVERSION_INT32_JUST_CAST(double)
CASE__NUMERIC_CONVERSION_UINT32_JUST_CAST(double)
CASE__NUMERIC_CONVERSION_DOUBLE_JUST_CAST(double)
NUMERIC_CONVERSION_METHOD_END
// XXX toChar convertions need to be fixed!
NUMERIC_CONVERSION_METHOD_BEGIN(VTYPE_CHAR, char, Char)
CASE__NUMERIC_CONVERSION_INT32_JUST_CAST(char)
CASE__NUMERIC_CONVERSION_UINT32_JUST_CAST(char)
CASE__NUMERIC_CONVERSION_DOUBLE_JUST_CAST(char)
NUMERIC_CONVERSION_METHOD_END
// XXX toWChar convertions need to be fixed!
NUMERIC_CONVERSION_METHOD_BEGIN(VTYPE_WCHAR, char16_t, WChar)
CASE__NUMERIC_CONVERSION_INT32_JUST_CAST(char16_t)
CASE__NUMERIC_CONVERSION_UINT32_JUST_CAST(char16_t)
CASE__NUMERIC_CONVERSION_DOUBLE_JUST_CAST(char16_t)
NUMERIC_CONVERSION_METHOD_END
#undef NUMERIC_CONVERSION_METHOD_BEGIN
#undef CASE__NUMERIC_CONVERSION_INT32_JUST_CAST
#undef CASE__NUMERIC_CONVERSION_INT32_MIN_MAX
#undef CASE__NUMERIC_CONVERSION_UINT32_JUST_CAST
#undef CASE__NUMERIC_CONVERSION_UINT32_MIN_MAX
#undef CASE__NUMERIC_CONVERSION_DOUBLE_JUST_CAST
#undef CASE__NUMERIC_CONVERSION_DOUBLE_MIN_MAX
#undef CASE__NUMERIC_CONVERSION_DOUBLE_MIN_MAX_INT
#undef CASES__NUMERIC_CONVERSION_NORMAL
#undef NUMERIC_CONVERSION_METHOD_END
#undef NUMERIC_CONVERSION_METHOD_NORMAL
/***************************************************************************/
// Just leverage a numeric converter for bool (but restrict the values).
// XXX Is this really what we want to do?
nsresult nsDiscriminatedUnion::ConvertToBool(bool* aResult) const {
TRIVIAL_DATA_CONVERTER(VTYPE_BOOL, mBoolValue, aResult)
double val;
nsresult rv = ConvertToDouble(&val);
if (NS_FAILED(rv)) {
return rv;
}
*aResult = 0.0 != val;
return rv;
}
/***************************************************************************/
nsresult nsDiscriminatedUnion::ConvertToInt64(int64_t* aResult) const {
TRIVIAL_DATA_CONVERTER(VTYPE_INT64, mInt64Value, aResult)
TRIVIAL_DATA_CONVERTER(VTYPE_UINT64, mUint64Value, aResult)
nsDiscriminatedUnion tempData;
nsresult rv = ToManageableNumber(&tempData);
if (NS_FAILED(rv)) {
return rv;
}
switch (tempData.mType) {
case nsIDataType::VTYPE_INT32:
*aResult = tempData.u.mInt32Value;
return rv;
case nsIDataType::VTYPE_UINT32:
*aResult = tempData.u.mUint32Value;
return rv;
case nsIDataType::VTYPE_DOUBLE:
// XXX should check for data loss here!
*aResult = tempData.u.mDoubleValue;
return rv;
default:
NS_ERROR("bad type returned from ToManageableNumber");
return NS_ERROR_CANNOT_CONVERT_DATA;
}
}
nsresult nsDiscriminatedUnion::ConvertToUint64(uint64_t* aResult) const {
return ConvertToInt64((int64_t*)aResult);
}
/***************************************************************************/
bool nsDiscriminatedUnion::String2ID(nsID* aPid) const {
nsAutoString tempString;
nsAString* pString;
switch (mType) {
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
return aPid->Parse(u.str.mStringValue);
case nsIDataType::VTYPE_CSTRING:
return aPid->Parse(PromiseFlatCString(*u.mCStringValue).get());
case nsIDataType::VTYPE_UTF8STRING:
return aPid->Parse(PromiseFlatUTF8String(*u.mUTF8StringValue).get());
case nsIDataType::VTYPE_ASTRING:
pString = u.mAStringValue;
break;
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
tempString.Assign(u.wstr.mWStringValue);
pString = &tempString;
break;
default:
NS_ERROR("bad type in call to String2ID");
return false;
}
char* pChars = ToNewCString(*pString, mozilla::fallible);
if (!pChars) {
return false;
}
bool result = aPid->Parse(pChars);
free(pChars);
return result;
}
nsresult nsDiscriminatedUnion::ConvertToID(nsID* aResult) const {
nsID id;
switch (mType) {
case nsIDataType::VTYPE_ID:
*aResult = u.mIDValue;
return NS_OK;
case nsIDataType::VTYPE_INTERFACE:
*aResult = NS_GET_IID(nsISupports);
return NS_OK;
case nsIDataType::VTYPE_INTERFACE_IS:
*aResult = u.iface.mInterfaceID;
return NS_OK;
case nsIDataType::VTYPE_ASTRING:
case nsIDataType::VTYPE_UTF8STRING:
case nsIDataType::VTYPE_CSTRING:
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
if (!String2ID(&id)) {
return NS_ERROR_CANNOT_CONVERT_DATA;
}
*aResult = id;
return NS_OK;
default:
return NS_ERROR_CANNOT_CONVERT_DATA;
}
}
/***************************************************************************/
nsresult nsDiscriminatedUnion::ToString(nsACString& aOutString) const {
mozilla::SmprintfPointer pptr;
switch (mType) {
// all the stuff we don't handle...
case nsIDataType::VTYPE_ASTRING:
case nsIDataType::VTYPE_UTF8STRING:
case nsIDataType::VTYPE_CSTRING:
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
case nsIDataType::VTYPE_WCHAR:
NS_ERROR("ToString being called for a string type - screwy logic!");
[[fallthrough]];
// XXX We might want stringified versions of these... ???
case nsIDataType::VTYPE_VOID:
case nsIDataType::VTYPE_EMPTY:
aOutString.SetIsVoid(true);
return NS_OK;
case nsIDataType::VTYPE_EMPTY_ARRAY:
case nsIDataType::VTYPE_ARRAY:
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
default:
return NS_ERROR_CANNOT_CONVERT_DATA;
// nsID has its own text formatter.
case nsIDataType::VTYPE_ID: {
char* ptr = u.mIDValue.ToString();
if (!ptr) {
return NS_ERROR_OUT_OF_MEMORY;
}
aOutString.Assign(ptr);
free(ptr);
return NS_OK;
}
// Can't use Smprintf for floats, since it's locale-dependent
#define CASE__APPENDFLOAT_NUMBER(type_, member_) \
case nsIDataType::type_: { \
nsAutoCString str; \
str.AppendFloat(u.member_); \
aOutString.Assign(str); \
return NS_OK; \
}
CASE__APPENDFLOAT_NUMBER(VTYPE_FLOAT, mFloatValue)
CASE__APPENDFLOAT_NUMBER(VTYPE_DOUBLE, mDoubleValue)
#undef CASE__APPENDFLOAT_NUMBER
// the rest can be Smprintf'd and use common code.
#define CASE__SMPRINTF_NUMBER(type_, format_, cast_, member_) \
case nsIDataType::type_: \
static_assert(sizeof(cast_) >= sizeof(u.member_), \
"size of type should be at least as big as member"); \
pptr = mozilla::Smprintf(format_, (cast_)u.member_); \
break;
CASE__SMPRINTF_NUMBER(VTYPE_INT8, "%d", int, mInt8Value)
CASE__SMPRINTF_NUMBER(VTYPE_INT16, "%d", int, mInt16Value)
CASE__SMPRINTF_NUMBER(VTYPE_INT32, "%d", int, mInt32Value)
CASE__SMPRINTF_NUMBER(VTYPE_INT64, "%" PRId64, int64_t, mInt64Value)
CASE__SMPRINTF_NUMBER(VTYPE_UINT8, "%u", unsigned, mUint8Value)
CASE__SMPRINTF_NUMBER(VTYPE_UINT16, "%u", unsigned, mUint16Value)
CASE__SMPRINTF_NUMBER(VTYPE_UINT32, "%u", unsigned, mUint32Value)
CASE__SMPRINTF_NUMBER(VTYPE_UINT64, "%" PRIu64, int64_t, mUint64Value)
// XXX Would we rather print "true" / "false" ?
CASE__SMPRINTF_NUMBER(VTYPE_BOOL, "%d", int, mBoolValue)
CASE__SMPRINTF_NUMBER(VTYPE_CHAR, "%c", char, mCharValue)
#undef CASE__SMPRINTF_NUMBER
}
if (!pptr) {
return NS_ERROR_OUT_OF_MEMORY;
}
aOutString.Assign(pptr.get());
return NS_OK;
}
nsresult nsDiscriminatedUnion::ConvertToAString(nsAString& aResult) const {
switch (mType) {
case nsIDataType::VTYPE_ASTRING:
aResult.Assign(*u.mAStringValue);
return NS_OK;
case nsIDataType::VTYPE_CSTRING:
CopyASCIItoUTF16(*u.mCStringValue, aResult);
return NS_OK;
case nsIDataType::VTYPE_UTF8STRING:
CopyUTF8toUTF16(*u.mUTF8StringValue, aResult);
return NS_OK;
case nsIDataType::VTYPE_CHAR_STR:
CopyASCIItoUTF16(mozilla::MakeStringSpan(u.str.mStringValue), aResult);
return NS_OK;
case nsIDataType::VTYPE_WCHAR_STR:
aResult.Assign(u.wstr.mWStringValue);
return NS_OK;
case nsIDataType::VTYPE_STRING_SIZE_IS:
CopyASCIItoUTF16(
nsDependentCString(u.str.mStringValue, u.str.mStringLength), aResult);
return NS_OK;
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
aResult.Assign(u.wstr.mWStringValue, u.wstr.mWStringLength);
return NS_OK;
case nsIDataType::VTYPE_WCHAR:
aResult.Assign(u.mWCharValue);
return NS_OK;
default: {
nsAutoCString tempCString;
nsresult rv = ToString(tempCString);
if (NS_FAILED(rv)) {
return rv;
}
CopyASCIItoUTF16(tempCString, aResult);
return NS_OK;
}
}
}
nsresult nsDiscriminatedUnion::ConvertToACString(nsACString& aResult) const {
switch (mType) {
case nsIDataType::VTYPE_ASTRING:
LossyCopyUTF16toASCII(*u.mAStringValue, aResult);
return NS_OK;
case nsIDataType::VTYPE_CSTRING:
aResult.Assign(*u.mCStringValue);
return NS_OK;
case nsIDataType::VTYPE_UTF8STRING:
// XXX This is an extra copy that should be avoided
// once Jag lands support for UTF8String and associated
// conversion methods.
LossyCopyUTF16toASCII(NS_ConvertUTF8toUTF16(*u.mUTF8StringValue),
aResult);
return NS_OK;
case nsIDataType::VTYPE_CHAR_STR:
aResult.Assign(*u.str.mStringValue);
return NS_OK;
case nsIDataType::VTYPE_WCHAR_STR:
LossyCopyUTF16toASCII(nsDependentString(u.wstr.mWStringValue), aResult);
return NS_OK;
case nsIDataType::VTYPE_STRING_SIZE_IS:
aResult.Assign(u.str.mStringValue, u.str.mStringLength);
return NS_OK;
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
LossyCopyUTF16toASCII(
nsDependentString(u.wstr.mWStringValue, u.wstr.mWStringLength),
aResult);
return NS_OK;
case nsIDataType::VTYPE_WCHAR: {
const char16_t* str = &u.mWCharValue;
LossyCopyUTF16toASCII(Substring(str, 1), aResult);
return NS_OK;
}
default:
return ToString(aResult);
}
}
nsresult nsDiscriminatedUnion::ConvertToAUTF8String(
nsAUTF8String& aResult) const {
switch (mType) {
case nsIDataType::VTYPE_ASTRING:
CopyUTF16toUTF8(*u.mAStringValue, aResult);
return NS_OK;
case nsIDataType::VTYPE_CSTRING:
// XXX Extra copy, can be removed if we're sure CSTRING can
// only contain ASCII.
CopyUTF16toUTF8(NS_ConvertASCIItoUTF16(*u.mCStringValue), aResult);
return NS_OK;
case nsIDataType::VTYPE_UTF8STRING:
aResult.Assign(*u.mUTF8StringValue);
return NS_OK;
case nsIDataType::VTYPE_CHAR_STR:
// XXX Extra copy, can be removed if we're sure CHAR_STR can
// only contain ASCII.
CopyUTF16toUTF8(NS_ConvertASCIItoUTF16(u.str.mStringValue), aResult);
return NS_OK;
case nsIDataType::VTYPE_WCHAR_STR:
CopyUTF16toUTF8(mozilla::MakeStringSpan(u.wstr.mWStringValue), aResult);
return NS_OK;
case nsIDataType::VTYPE_STRING_SIZE_IS:
// XXX Extra copy, can be removed if we're sure CHAR_STR can
// only contain ASCII.
CopyUTF16toUTF8(NS_ConvertASCIItoUTF16(nsDependentCString(
u.str.mStringValue, u.str.mStringLength)),
aResult);
return NS_OK;
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
CopyUTF16toUTF8(
nsDependentString(u.wstr.mWStringValue, u.wstr.mWStringLength),
aResult);
return NS_OK;
case nsIDataType::VTYPE_WCHAR: {
const char16_t* str = &u.mWCharValue;
CopyUTF16toUTF8(Substring(str, 1), aResult);
return NS_OK;
}
default: {
nsAutoCString tempCString;
nsresult rv = ToString(tempCString);
if (NS_FAILED(rv)) {
return rv;
}
// XXX Extra copy, can be removed if we're sure tempCString can
// only contain ASCII.
CopyUTF16toUTF8(NS_ConvertASCIItoUTF16(tempCString), aResult);
return NS_OK;
}
}
}
nsresult nsDiscriminatedUnion::ConvertToString(char** aResult) const {
uint32_t ignored;
return ConvertToStringWithSize(&ignored, aResult);
}
nsresult nsDiscriminatedUnion::ConvertToWString(char16_t** aResult) const {
uint32_t ignored;
return ConvertToWStringWithSize(&ignored, aResult);
}
nsresult nsDiscriminatedUnion::ConvertToStringWithSize(uint32_t* aSize,
char** aStr) const {
nsAutoString tempString;
nsAutoCString tempCString;
nsresult rv;
switch (mType) {
case nsIDataType::VTYPE_ASTRING:
*aSize = u.mAStringValue->Length();
*aStr = ToNewCString(*u.mAStringValue);
break;
case nsIDataType::VTYPE_CSTRING:
*aSize = u.mCStringValue->Length();
*aStr = ToNewCString(*u.mCStringValue);
break;
case nsIDataType::VTYPE_UTF8STRING: {
// XXX This is doing 1 extra copy. Need to fix this
// when Jag lands UTF8String
// we want:
// *aSize = *mUTF8StringValue->Length();
// *aStr = ToNewCString(*mUTF8StringValue);
// But this will have to do for now.
const NS_ConvertUTF8toUTF16 tempString16(*u.mUTF8StringValue);
*aSize = tempString16.Length();
*aStr = ToNewCString(tempString16);
break;
}
case nsIDataType::VTYPE_CHAR_STR: {
nsDependentCString cString(u.str.mStringValue);
*aSize = cString.Length();
*aStr = ToNewCString(cString);
break;
}
case nsIDataType::VTYPE_WCHAR_STR: {
nsDependentString string(u.wstr.mWStringValue);
*aSize = string.Length();
*aStr = ToNewCString(string);
break;
}
case nsIDataType::VTYPE_STRING_SIZE_IS: {
nsDependentCString cString(u.str.mStringValue, u.str.mStringLength);
*aSize = cString.Length();
*aStr = ToNewCString(cString);
break;
}
case nsIDataType::VTYPE_WSTRING_SIZE_IS: {
nsDependentString string(u.wstr.mWStringValue, u.wstr.mWStringLength);
*aSize = string.Length();
*aStr = ToNewCString(string);
break;
}
case nsIDataType::VTYPE_WCHAR:
tempString.Assign(u.mWCharValue);
*aSize = tempString.Length();
*aStr = ToNewCString(tempString);
break;
default:
rv = ToString(tempCString);
if (NS_FAILED(rv)) {
return rv;
}
*aSize = tempCString.Length();
*aStr = ToNewCString(tempCString);
break;
}
return *aStr ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
nsresult nsDiscriminatedUnion::ConvertToWStringWithSize(uint32_t* aSize,
char16_t** aStr) const {
nsAutoString tempString;
nsAutoCString tempCString;
nsresult rv;
switch (mType) {
case nsIDataType::VTYPE_ASTRING:
*aSize = u.mAStringValue->Length();
*aStr = ToNewUnicode(*u.mAStringValue);
break;
case nsIDataType::VTYPE_CSTRING:
*aSize = u.mCStringValue->Length();
*aStr = ToNewUnicode(*u.mCStringValue);
break;
case nsIDataType::VTYPE_UTF8STRING: {
*aStr = UTF8ToNewUnicode(*u.mUTF8StringValue, aSize);
break;
}
case nsIDataType::VTYPE_CHAR_STR: {
nsDependentCString cString(u.str.mStringValue);
*aSize = cString.Length();
*aStr = ToNewUnicode(cString);
break;
}
case nsIDataType::VTYPE_WCHAR_STR: {
nsDependentString string(u.wstr.mWStringValue);
*aSize = string.Length();
*aStr = ToNewUnicode(string);
break;
}
case nsIDataType::VTYPE_STRING_SIZE_IS: {
nsDependentCString cString(u.str.mStringValue, u.str.mStringLength);
*aSize = cString.Length();
*aStr = ToNewUnicode(cString);
break;
}
case nsIDataType::VTYPE_WSTRING_SIZE_IS: {
nsDependentString string(u.wstr.mWStringValue, u.wstr.mWStringLength);
*aSize = string.Length();
*aStr = ToNewUnicode(string);
break;
}
case nsIDataType::VTYPE_WCHAR:
tempString.Assign(u.mWCharValue);
*aSize = tempString.Length();
*aStr = ToNewUnicode(tempString);
break;
default:
rv = ToString(tempCString);
if (NS_FAILED(rv)) {
return rv;
}
*aSize = tempCString.Length();
*aStr = ToNewUnicode(tempCString);
break;
}
return *aStr ? NS_OK : NS_ERROR_OUT_OF_MEMORY;
}
nsresult nsDiscriminatedUnion::ConvertToISupports(nsISupports** aResult) const {
switch (mType) {
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
if (u.iface.mInterfaceValue) {
return u.iface.mInterfaceValue->QueryInterface(NS_GET_IID(nsISupports),
(void**)aResult);
} else {
*aResult = nullptr;
return NS_OK;
}
default:
return NS_ERROR_CANNOT_CONVERT_DATA;
}
}
nsresult nsDiscriminatedUnion::ConvertToInterface(nsIID** aIID,
void** aInterface) const {
const nsIID* piid;
switch (mType) {
case nsIDataType::VTYPE_INTERFACE:
piid = &NS_GET_IID(nsISupports);
break;
case nsIDataType::VTYPE_INTERFACE_IS:
piid = &u.iface.mInterfaceID;
break;
default:
return NS_ERROR_CANNOT_CONVERT_DATA;
}
*aIID = piid->Clone();
if (u.iface.mInterfaceValue) {
return u.iface.mInterfaceValue->QueryInterface(*piid, aInterface);
}
*aInterface = nullptr;
return NS_OK;
}
nsresult nsDiscriminatedUnion::ConvertToArray(uint16_t* aType, nsIID* aIID,
uint32_t* aCount,
void** aPtr) const {
// XXX perhaps we'd like to add support for converting each of the various
// types into an array containing one element of that type. We can leverage
// CloneArray to do this if we want to support this.
if (mType == nsIDataType::VTYPE_ARRAY) {
return CloneArray(u.array.mArrayType, &u.array.mArrayInterfaceID,
u.array.mArrayCount, u.array.mArrayValue, aType, aIID,
aCount, aPtr);
}
return NS_ERROR_CANNOT_CONVERT_DATA;
}
/***************************************************************************/
// static setter functions...
#define DATA_SETTER_PROLOGUE Cleanup()
#define DATA_SETTER_EPILOGUE(type_) mType = nsIDataType::type_;
#define DATA_SETTER(type_, member_, value_) \
DATA_SETTER_PROLOGUE; \
u.member_ = value_; \
DATA_SETTER_EPILOGUE(type_)
#define DATA_SETTER_WITH_CAST(type_, member_, cast_, value_) \
DATA_SETTER_PROLOGUE; \
u.member_ = cast_ value_; \
DATA_SETTER_EPILOGUE(type_)
/********************************************/
#define CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(type_) {
#define CASE__SET_FROM_VARIANT_VTYPE__GETTER(member_, name_) \
rv = aValue->GetAs##name_(&(u.member_));
#define CASE__SET_FROM_VARIANT_VTYPE__GETTER_CAST(cast_, member_, name_) \
rv = aValue->GetAs##name_(cast_ & (u.member_));
#define CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(type_) \
if (NS_SUCCEEDED(rv)) { \
mType = nsIDataType::type_; \
} \
break; \
}
#define CASE__SET_FROM_VARIANT_TYPE(type_, member_, name_) \
case nsIDataType::type_: \
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(type_) \
CASE__SET_FROM_VARIANT_VTYPE__GETTER(member_, name_) \
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(type_)
#define CASE__SET_FROM_VARIANT_VTYPE_CAST(type_, cast_, member_, name_) \
case nsIDataType::type_: \
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(type_) \
CASE__SET_FROM_VARIANT_VTYPE__GETTER_CAST(cast_, member_, name_) \
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(type_)
nsresult nsDiscriminatedUnion::SetFromVariant(nsIVariant* aValue) {
nsresult rv = NS_OK;
Cleanup();
uint16_t type = aValue->GetDataType();
switch (type) {
CASE__SET_FROM_VARIANT_VTYPE_CAST(VTYPE_INT8, (uint8_t*), mInt8Value, Int8)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_INT16, mInt16Value, Int16)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_INT32, mInt32Value, Int32)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_UINT8, mUint8Value, Uint8)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_UINT16, mUint16Value, Uint16)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_UINT32, mUint32Value, Uint32)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_FLOAT, mFloatValue, Float)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_DOUBLE, mDoubleValue, Double)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_BOOL, mBoolValue, Bool)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_CHAR, mCharValue, Char)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_WCHAR, mWCharValue, WChar)
CASE__SET_FROM_VARIANT_TYPE(VTYPE_ID, mIDValue, ID)
case nsIDataType::VTYPE_ASTRING:
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(VTYPE_ASTRING);
u.mAStringValue = new nsString();
rv = aValue->GetAsAString(*u.mAStringValue);
if (NS_FAILED(rv)) {
delete u.mAStringValue;
}
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(VTYPE_ASTRING)
case nsIDataType::VTYPE_CSTRING:
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(VTYPE_CSTRING);
u.mCStringValue = new nsCString();
rv = aValue->GetAsACString(*u.mCStringValue);
if (NS_FAILED(rv)) {
delete u.mCStringValue;
}
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(VTYPE_CSTRING)
case nsIDataType::VTYPE_UTF8STRING:
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(VTYPE_UTF8STRING);
u.mUTF8StringValue = new nsUTF8String();
rv = aValue->GetAsAUTF8String(*u.mUTF8StringValue);
if (NS_FAILED(rv)) {
delete u.mUTF8StringValue;
}
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(VTYPE_UTF8STRING)
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(VTYPE_STRING_SIZE_IS);
rv = aValue->GetAsStringWithSize(&u.str.mStringLength,
&u.str.mStringValue);
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(VTYPE_STRING_SIZE_IS)
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(VTYPE_INTERFACE_IS);
// XXX This iid handling is ugly!
nsIID* iid;
rv = aValue->GetAsInterface(&iid, (void**)&u.iface.mInterfaceValue);
if (NS_SUCCEEDED(rv)) {
u.iface.mInterfaceID = *iid;
free((char*)iid);
}
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(VTYPE_INTERFACE_IS)
case nsIDataType::VTYPE_ARRAY:
CASE__SET_FROM_VARIANT_VTYPE_PROLOGUE(VTYPE_ARRAY);
rv = aValue->GetAsArray(&u.array.mArrayType, &u.array.mArrayInterfaceID,
&u.array.mArrayCount, &u.array.mArrayValue);
CASE__SET_FROM_VARIANT_VTYPE_EPILOGUE(VTYPE_ARRAY)
case nsIDataType::VTYPE_VOID:
SetToVoid();
rv = NS_OK;
break;
case nsIDataType::VTYPE_EMPTY_ARRAY:
SetToEmptyArray();
rv = NS_OK;
break;
case nsIDataType::VTYPE_EMPTY:
SetToEmpty();
rv = NS_OK;
break;
default:
NS_ERROR("bad type in variant!");
rv = NS_ERROR_FAILURE;
break;
}
return rv;
}
void nsDiscriminatedUnion::SetFromInt8(uint8_t aValue) {
DATA_SETTER_WITH_CAST(VTYPE_INT8, mInt8Value, (uint8_t), aValue);
}
void nsDiscriminatedUnion::SetFromInt16(int16_t aValue) {
DATA_SETTER(VTYPE_INT16, mInt16Value, aValue);
}
void nsDiscriminatedUnion::SetFromInt32(int32_t aValue) {
DATA_SETTER(VTYPE_INT32, mInt32Value, aValue);
}
void nsDiscriminatedUnion::SetFromInt64(int64_t aValue) {
DATA_SETTER(VTYPE_INT64, mInt64Value, aValue);
}
void nsDiscriminatedUnion::SetFromUint8(uint8_t aValue) {
DATA_SETTER(VTYPE_UINT8, mUint8Value, aValue);
}
void nsDiscriminatedUnion::SetFromUint16(uint16_t aValue) {
DATA_SETTER(VTYPE_UINT16, mUint16Value, aValue);
}
void nsDiscriminatedUnion::SetFromUint32(uint32_t aValue) {
DATA_SETTER(VTYPE_UINT32, mUint32Value, aValue);
}
void nsDiscriminatedUnion::SetFromUint64(uint64_t aValue) {
DATA_SETTER(VTYPE_UINT64, mUint64Value, aValue);
}
void nsDiscriminatedUnion::SetFromFloat(float aValue) {
DATA_SETTER(VTYPE_FLOAT, mFloatValue, aValue);
}
void nsDiscriminatedUnion::SetFromDouble(double aValue) {
DATA_SETTER(VTYPE_DOUBLE, mDoubleValue, aValue);
}
void nsDiscriminatedUnion::SetFromBool(bool aValue) {
DATA_SETTER(VTYPE_BOOL, mBoolValue, aValue);
}
void nsDiscriminatedUnion::SetFromChar(char aValue) {
DATA_SETTER(VTYPE_CHAR, mCharValue, aValue);
}
void nsDiscriminatedUnion::SetFromWChar(char16_t aValue) {
DATA_SETTER(VTYPE_WCHAR, mWCharValue, aValue);
}
void nsDiscriminatedUnion::SetFromID(const nsID& aValue) {
DATA_SETTER(VTYPE_ID, mIDValue, aValue);
}
void nsDiscriminatedUnion::SetFromAString(const nsAString& aValue) {
DATA_SETTER_PROLOGUE;
u.mAStringValue = new nsString(aValue);
DATA_SETTER_EPILOGUE(VTYPE_ASTRING);
}
void nsDiscriminatedUnion::SetFromACString(const nsACString& aValue) {
DATA_SETTER_PROLOGUE;
u.mCStringValue = new nsCString(aValue);
DATA_SETTER_EPILOGUE(VTYPE_CSTRING);
}
void nsDiscriminatedUnion::SetFromAUTF8String(const nsAUTF8String& aValue) {
DATA_SETTER_PROLOGUE;
u.mUTF8StringValue = new nsUTF8String(aValue);
DATA_SETTER_EPILOGUE(VTYPE_UTF8STRING);
}
nsresult nsDiscriminatedUnion::SetFromString(const char* aValue) {
DATA_SETTER_PROLOGUE;
if (!aValue) {
return NS_ERROR_NULL_POINTER;
}
return SetFromStringWithSize(strlen(aValue), aValue);
}
nsresult nsDiscriminatedUnion::SetFromWString(const char16_t* aValue) {
DATA_SETTER_PROLOGUE;
if (!aValue) {
return NS_ERROR_NULL_POINTER;
}
return SetFromWStringWithSize(NS_strlen(aValue), aValue);
}
void nsDiscriminatedUnion::SetFromISupports(nsISupports* aValue) {
return SetFromInterface(NS_GET_IID(nsISupports), aValue);
}
void nsDiscriminatedUnion::SetFromInterface(const nsIID& aIID,
nsISupports* aValue) {
DATA_SETTER_PROLOGUE;
NS_IF_ADDREF(aValue);
u.iface.mInterfaceValue = aValue;
u.iface.mInterfaceID = aIID;
DATA_SETTER_EPILOGUE(VTYPE_INTERFACE_IS);
}
nsresult nsDiscriminatedUnion::SetFromArray(uint16_t aType, const nsIID* aIID,
uint32_t aCount, void* aValue) {
DATA_SETTER_PROLOGUE;
if (!aValue || !aCount) {
return NS_ERROR_NULL_POINTER;
}
nsresult rv = CloneArray(aType, aIID, aCount, aValue, &u.array.mArrayType,
&u.array.mArrayInterfaceID, &u.array.mArrayCount,
&u.array.mArrayValue);
if (NS_FAILED(rv)) {
return rv;
}
DATA_SETTER_EPILOGUE(VTYPE_ARRAY);
return NS_OK;
}
nsresult nsDiscriminatedUnion::SetFromStringWithSize(uint32_t aSize,
const char* aValue) {
DATA_SETTER_PROLOGUE;
if (!aValue) {
return NS_ERROR_NULL_POINTER;
}
u.str.mStringValue = (char*)moz_xmemdup(aValue, (aSize + 1) * sizeof(char));
u.str.mStringLength = aSize;
DATA_SETTER_EPILOGUE(VTYPE_STRING_SIZE_IS);
return NS_OK;
}
nsresult nsDiscriminatedUnion::SetFromWStringWithSize(uint32_t aSize,
const char16_t* aValue) {
DATA_SETTER_PROLOGUE;
if (!aValue) {
return NS_ERROR_NULL_POINTER;
}
u.wstr.mWStringValue =
(char16_t*)moz_xmemdup(aValue, (aSize + 1) * sizeof(char16_t));
u.wstr.mWStringLength = aSize;
DATA_SETTER_EPILOGUE(VTYPE_WSTRING_SIZE_IS);
return NS_OK;
}
void nsDiscriminatedUnion::AllocateWStringWithSize(uint32_t aSize) {
DATA_SETTER_PROLOGUE;
u.wstr.mWStringValue = (char16_t*)moz_xmalloc((aSize + 1) * sizeof(char16_t));
u.wstr.mWStringValue[aSize] = '\0';
u.wstr.mWStringLength = aSize;
DATA_SETTER_EPILOGUE(VTYPE_WSTRING_SIZE_IS);
}
void nsDiscriminatedUnion::SetToVoid() {
DATA_SETTER_PROLOGUE;
DATA_SETTER_EPILOGUE(VTYPE_VOID);
}
void nsDiscriminatedUnion::SetToEmpty() {
DATA_SETTER_PROLOGUE;
DATA_SETTER_EPILOGUE(VTYPE_EMPTY);
}
void nsDiscriminatedUnion::SetToEmptyArray() {
DATA_SETTER_PROLOGUE;
DATA_SETTER_EPILOGUE(VTYPE_EMPTY_ARRAY);
}
/***************************************************************************/
void nsDiscriminatedUnion::Cleanup() {
switch (mType) {
case nsIDataType::VTYPE_INT8:
case nsIDataType::VTYPE_INT16:
case nsIDataType::VTYPE_INT32:
case nsIDataType::VTYPE_INT64:
case nsIDataType::VTYPE_UINT8:
case nsIDataType::VTYPE_UINT16:
case nsIDataType::VTYPE_UINT32:
case nsIDataType::VTYPE_UINT64:
case nsIDataType::VTYPE_FLOAT:
case nsIDataType::VTYPE_DOUBLE:
case nsIDataType::VTYPE_BOOL:
case nsIDataType::VTYPE_CHAR:
case nsIDataType::VTYPE_WCHAR:
case nsIDataType::VTYPE_VOID:
case nsIDataType::VTYPE_ID:
break;
case nsIDataType::VTYPE_ASTRING:
delete u.mAStringValue;
break;
case nsIDataType::VTYPE_CSTRING:
delete u.mCStringValue;
break;
case nsIDataType::VTYPE_UTF8STRING:
delete u.mUTF8StringValue;
break;
case nsIDataType::VTYPE_CHAR_STR:
case nsIDataType::VTYPE_STRING_SIZE_IS:
free((char*)u.str.mStringValue);
break;
case nsIDataType::VTYPE_WCHAR_STR:
case nsIDataType::VTYPE_WSTRING_SIZE_IS:
free((char*)u.wstr.mWStringValue);
break;
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
NS_IF_RELEASE(u.iface.mInterfaceValue);
break;
case nsIDataType::VTYPE_ARRAY:
FreeArray();
break;
case nsIDataType::VTYPE_EMPTY_ARRAY:
case nsIDataType::VTYPE_EMPTY:
break;
default:
NS_ERROR("bad type in variant!");
break;
}
mType = nsIDataType::VTYPE_EMPTY;
}
void nsDiscriminatedUnion::Traverse(
nsCycleCollectionTraversalCallback& aCb) const {
switch (mType) {
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS:
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(aCb, "mData");
aCb.NoteXPCOMChild(u.iface.mInterfaceValue);
break;
case nsIDataType::VTYPE_ARRAY:
switch (u.array.mArrayType) {
case nsIDataType::VTYPE_INTERFACE:
case nsIDataType::VTYPE_INTERFACE_IS: {
nsISupports** p = (nsISupports**)u.array.mArrayValue;
for (uint32_t i = u.array.mArrayCount; i > 0; ++p, --i) {
NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(aCb, "mData[i]");
aCb.NoteXPCOMChild(*p);
}
break;
}
default:
break;
}
break;
default:
break;
}
}
/***************************************************************************/
/***************************************************************************/
// members...
nsVariantBase::nsVariantBase() : mWritable(true) {}
// For all the data getters we just forward to the static (and sharable)
// 'ConvertTo' functions.
uint16_t nsVariantBase::GetDataType() { return mData.GetType(); }
NS_IMETHODIMP
nsVariantBase::GetAsInt8(uint8_t* aResult) {
return mData.ConvertToInt8(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsInt16(int16_t* aResult) {
return mData.ConvertToInt16(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsInt32(int32_t* aResult) {
return mData.ConvertToInt32(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsInt64(int64_t* aResult) {
return mData.ConvertToInt64(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsUint8(uint8_t* aResult) {
return mData.ConvertToUint8(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsUint16(uint16_t* aResult) {
return mData.ConvertToUint16(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsUint32(uint32_t* aResult) {
return mData.ConvertToUint32(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsUint64(uint64_t* aResult) {
return mData.ConvertToUint64(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsFloat(float* aResult) {
return mData.ConvertToFloat(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsDouble(double* aResult) {
return mData.ConvertToDouble(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsBool(bool* aResult) { return mData.ConvertToBool(aResult); }
NS_IMETHODIMP
nsVariantBase::GetAsChar(char* aResult) { return mData.ConvertToChar(aResult); }
NS_IMETHODIMP
nsVariantBase::GetAsWChar(char16_t* aResult) {
return mData.ConvertToWChar(aResult);
}
NS_IMETHODIMP_(nsresult)
nsVariantBase::GetAsID(nsID* aResult) { return mData.ConvertToID(aResult); }
NS_IMETHODIMP
nsVariantBase::GetAsAString(nsAString& aResult) {
return mData.ConvertToAString(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsACString(nsACString& aResult) {
return mData.ConvertToACString(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsAUTF8String(nsAUTF8String& aResult) {
return mData.ConvertToAUTF8String(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsString(char** aResult) {
return mData.ConvertToString(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsWString(char16_t** aResult) {
return mData.ConvertToWString(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsISupports(nsISupports** aResult) {
return mData.ConvertToISupports(aResult);
}
NS_IMETHODIMP
nsVariantBase::GetAsJSVal(JS::MutableHandleValue) {
// Can only get the jsval from an XPCVariant.
return NS_ERROR_CANNOT_CONVERT_DATA;
}
NS_IMETHODIMP
nsVariantBase::GetAsInterface(nsIID** aIID, void** aInterface) {
return mData.ConvertToInterface(aIID, aInterface);
}
NS_IMETHODIMP_(nsresult)
nsVariantBase::GetAsArray(uint16_t* aType, nsIID* aIID, uint32_t* aCount,
void** aPtr) {
return mData.ConvertToArray(aType, aIID, aCount, aPtr);
}
NS_IMETHODIMP
nsVariantBase::GetAsStringWithSize(uint32_t* aSize, char** aStr) {
return mData.ConvertToStringWithSize(aSize, aStr);
}
NS_IMETHODIMP
nsVariantBase::GetAsWStringWithSize(uint32_t* aSize, char16_t** aStr) {
return mData.ConvertToWStringWithSize(aSize, aStr);
}
/***************************************************************************/
NS_IMETHODIMP
nsVariantBase::GetWritable(bool* aWritable) {
*aWritable = mWritable;
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetWritable(bool aWritable) {
if (!mWritable && aWritable) {
return NS_ERROR_FAILURE;
}
mWritable = aWritable;
return NS_OK;
}
/***************************************************************************/
// For all the data setters we just forward to the static (and sharable)
// 'SetFrom' functions.
NS_IMETHODIMP
nsVariantBase::SetAsInt8(uint8_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromInt8(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsInt16(int16_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromInt16(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsInt32(int32_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromInt32(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsInt64(int64_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromInt64(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsUint8(uint8_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromUint8(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsUint16(uint16_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromUint16(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsUint32(uint32_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromUint32(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsUint64(uint64_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromUint64(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsFloat(float aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromFloat(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsDouble(double aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromDouble(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsBool(bool aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromBool(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsChar(char aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromChar(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsWChar(char16_t aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromWChar(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsID(const nsID& aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromID(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsAString(const nsAString& aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromAString(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsACString(const nsACString& aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromACString(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsAUTF8String(const nsAUTF8String& aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromAUTF8String(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsString(const char* aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
return mData.SetFromString(aValue);
}
NS_IMETHODIMP
nsVariantBase::SetAsWString(const char16_t* aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
return mData.SetFromWString(aValue);
}
NS_IMETHODIMP
nsVariantBase::SetAsISupports(nsISupports* aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromISupports(aValue);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsInterface(const nsIID& aIID, void* aInterface) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetFromInterface(aIID, (nsISupports*)aInterface);
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsArray(uint16_t aType, const nsIID* aIID, uint32_t aCount,
void* aPtr) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
return mData.SetFromArray(aType, aIID, aCount, aPtr);
}
NS_IMETHODIMP
nsVariantBase::SetAsStringWithSize(uint32_t aSize, const char* aStr) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
return mData.SetFromStringWithSize(aSize, aStr);
}
NS_IMETHODIMP
nsVariantBase::SetAsWStringWithSize(uint32_t aSize, const char16_t* aStr) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
return mData.SetFromWStringWithSize(aSize, aStr);
}
NS_IMETHODIMP
nsVariantBase::SetAsVoid() {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetToVoid();
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsEmpty() {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetToEmpty();
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetAsEmptyArray() {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
mData.SetToEmptyArray();
return NS_OK;
}
NS_IMETHODIMP
nsVariantBase::SetFromVariant(nsIVariant* aValue) {
if (!mWritable) {
return NS_ERROR_OBJECT_IS_IMMUTABLE;
}
return mData.SetFromVariant(aValue);
}
/* nsVariant implementation */
NS_IMPL_ISUPPORTS(nsVariant, nsIVariant, nsIWritableVariant)
/* nsVariantCC implementation */
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsVariantCC)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_ENTRY(nsIVariant)
NS_INTERFACE_MAP_ENTRY(nsIWritableVariant)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION_CLASS(nsVariantCC)
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsVariantCC)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsVariantCC)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsVariantCC)
tmp->mData.Traverse(cb);
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsVariantCC)
tmp->mData.Cleanup();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
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