Class CompoundDataVariableProvider

src/IECore/StringAlgo.cpp:238–300

}

struct CompoundDataVariableProvider : public StringAlgo::VariableProvider
{

	CompoundDataVariableProvider( const CompoundData *variables )
		:	m_variables( variables )
	{
	}

	int frame() const override
	{
		const Data *d = m_variables->member( "frame" );
		if( !d )
		{
			return 1;
		}
		switch( d->typeId() )
		{
			case IntDataTypeId :
				return static_cast<const IntData *>( d )->readable();
			case FloatDataTypeId :
				return (int)round( static_cast<const FloatData *>( d )->readable() );
			default :
				throw IECore::Exception(
					string( "Unexpected data type \"" ) + d->typeName() +
					"\" for frame : expected IntData or FloatData"
				);
		}
	}

	const std::string &variable( const boost::string_view &name, bool &recurse ) const override
	{
		const IECore::Data *d = m_variables->member<IECore::Data>( name );
		if( d )
		{
			switch( d->typeId() )
			{
				case IECore::StringDataTypeId :
					recurse = true;
					return static_cast<const IECore::StringData *>( d )->readable();
				case IECore::FloatDataTypeId :
					m_formattedString = boost::lexical_cast<std::string>(
						static_cast<const IECore::FloatData *>( d )->readable()
					);
					return m_formattedString;
				case IECore::IntDataTypeId :
					m_formattedString = boost::lexical_cast<std::string>(
						static_cast<const IECore::IntData *>( d )->readable()
					);
					return m_formattedString;
				default :
					break;
			}
		}
		m_formattedString.clear();
		return m_formattedString;
	}

	private :