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C++ BVariant::ToInt64方法代码示例

本文整理汇总了C++中BVariant::ToInt64方法的典型用法代码示例。如果您正苦于以下问题:C++ BVariant::ToInt64方法的具体用法?C++ BVariant::ToInt64怎么用?C++ BVariant::ToInt64使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在BVariant的用法示例。


在下文中一共展示了BVariant::ToInt64方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: TypeContext

status_t
DwarfArrayType::ResolveElementLocation(const ArrayIndexPath& indexPath,
	const ValueLocation& parentLocation, ValueLocation*& _location)
{
	if (indexPath.CountIndices() != CountDimensions())
		return B_BAD_VALUE;
	DwarfTypeContext* typeContext = TypeContext();

	// If the array entry has a bit stride, get it. Otherwise fall back to the
	// element type size.
	int64 bitStride;
	DIEArrayType* bitStrideOwnerEntry = NULL;
	if (fEntry != NULL && (bitStrideOwnerEntry = DwarfUtils::GetDIEByPredicate(
			fEntry, HasBitStridePredicate<DIEArrayType>()))) {
		BVariant value;
		status_t error = typeContext->File()->EvaluateDynamicValue(
			typeContext->GetCompilationUnit(), typeContext->AddressSize(),
			typeContext->SubprogramEntry(), bitStrideOwnerEntry->BitStride(),
			typeContext->TargetInterface(), typeContext->InstructionPointer(),
			typeContext->FramePointer(), value);
		if (error != B_OK)
			return error;
		if (!value.IsInteger())
			return B_BAD_VALUE;
		bitStride = value.ToInt64();
	} else
		bitStride = BaseType()->ByteSize() * 8;

	// Iterate backward through the dimensions and compute the total offset of
	// the element.
	int64 elementOffset = 0;
	DwarfArrayDimension* previousDimension = NULL;
	int64 previousDimensionStride = 0;
	for (int32 dimensionIndex = CountDimensions() - 1;
			dimensionIndex >= 0; dimensionIndex--) {
		DwarfArrayDimension* dimension = DwarfDimensionAt(dimensionIndex);
		int64 index = indexPath.IndexAt(dimensionIndex);

		// If the dimension has a special bit/byte stride, get it.
		int64 dimensionStride = 0;
		DwarfType* dimensionType = dimension->GetDwarfType();
		DIEArrayIndexType* dimensionTypeEntry = dimensionType != NULL
			? dynamic_cast<DIEArrayIndexType*>(dimensionType->GetDIEType())
			: NULL;
		if (dimensionTypeEntry != NULL) {
			DIEArrayIndexType* bitStrideOwnerEntry
				= DwarfUtils::GetDIEByPredicate(dimensionTypeEntry,
					HasBitStridePredicate<DIEArrayIndexType>());
			if (bitStrideOwnerEntry != NULL) {
				BVariant value;
				status_t error = typeContext->File()->EvaluateDynamicValue(
					typeContext->GetCompilationUnit(),
					typeContext->AddressSize(),
					typeContext->SubprogramEntry(),
					bitStrideOwnerEntry->BitStride(),
					typeContext->TargetInterface(),
					typeContext->InstructionPointer(),
					typeContext->FramePointer(), value);
				if (error != B_OK)
					return error;
				if (!value.IsInteger())
					return B_BAD_VALUE;
				dimensionStride = value.ToInt64();
			} else {
				DIEArrayIndexType* byteStrideOwnerEntry
					= DwarfUtils::GetDIEByPredicate(dimensionTypeEntry,
						HasByteStridePredicate<DIEArrayIndexType>());
				if (byteStrideOwnerEntry != NULL) {
					BVariant value;
					status_t error = typeContext->File()->EvaluateDynamicValue(
						typeContext->GetCompilationUnit(),
						typeContext->AddressSize(),
						typeContext->SubprogramEntry(),
						byteStrideOwnerEntry->ByteStride(),
						typeContext->TargetInterface(),
						typeContext->InstructionPointer(),
						typeContext->FramePointer(), value);
					if (error != B_OK)
						return error;
					if (!value.IsInteger())
						return B_BAD_VALUE;
					dimensionStride = value.ToInt64() * 8;
				}
			}
		}

		// If we don't have a stride for the dimension yet, use the stride of
		// the previous dimension multiplied by the size of the dimension.
		if (dimensionStride == 0) {
			if (previousDimension != NULL) {
				dimensionStride = previousDimensionStride
					* previousDimension->CountElements();
			} else {
				// the last dimension -- use the element bit stride
				dimensionStride = bitStride;
			}
		}

		// If the dimension stride is still 0 (that can happen, if the dimension
		// doesn't have a stride and the previous dimension's element count is
//.........这里部分代码省略.........
开发者ID:RAZVOR,项目名称:haiku,代码行数:101,代码来源:DwarfTypes.cpp


注:本文中的BVariant::ToInt64方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。