diff options
Diffstat (limited to '')
| -rw-r--r-- | xpcom/ds/nsVariant.cpp | 1876 |
1 files changed, 1876 insertions, 0 deletions
diff --git a/xpcom/ds/nsVariant.cpp b/xpcom/ds/nsVariant.cpp new file mode 100644 index 0000000000..f8a40431c7 --- /dev/null +++ b/xpcom/ds/nsVariant.cpp @@ -0,0 +1,1876 @@ +/* -*- 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 "nsString.h" +#include "nsCRTGlue.h" +#include "mozilla/FloatingPoint.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_INT(Ctype_, min_, max_) \ + case nsIDataType::VTYPE_DOUBLE: { \ + double value = tempData.u.mDoubleValue; \ + if (std::isnan(value) || 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 conversions 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 conversions need to be fixed! +NUMERIC_CONVERSION_METHOD_NORMAL(VTYPE_CHAR, char, Char, CHAR_MIN, CHAR_MAX) + +// XXX toWChar conversions need to be fixed! +NUMERIC_CONVERSION_METHOD_NORMAL(VTYPE_WCHAR, char16_t, WChar, 0, + std::numeric_limits<char16_t>::max()) + +#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; + } + // NaN is falsy in JS, so we might as well make it false here. + if (std::isnan(val)) { + *aResult = false; + } else { + *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: { + double value = tempData.u.mDoubleValue; + if (std::isnan(value)) { + return NS_ERROR_LOSS_OF_SIGNIFICANT_DATA; + } + // XXX should check for data loss here! + *aResult = value; + 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: { + aOutString.Assign(u.mIDValue.ToString().get()); + 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 |