public DefaultBuildContext(IExport targetExport, BuildMode mode, IContainer container, string contractName,
ErrorTracer errorTracer, BuildParameter[] parameters, IResolverExtension[] resolverExtensions)
{
Contract.Requires<ArgumentNullException>(targetExport != null, "targetExport");
Contract.Requires<ArgumentNullException>(container != null, "container");
Contract.Requires<ArgumentNullException>(errorTracer != null, "errorTracer");
Metadata = targetExport.GetNamedExportMetadata(contractName);
errorTracer.Export = Metadata.ToString();
ExportType = targetExport.ImplementType;
Target = null;
BuildCompled = false;
Policys = new PolicyList();
Mode = mode;
Container = container;
ErrorTracer = errorTracer;
Parameters = parameters;
ResolverExtensions = resolverExtensions;
}
