public void HandleWrite(TypeHandlingContext context)
{
IType valueType = context.Type.GetNullableUnderlyingType();
if (valueType == null)
{
throw new NotSupportedException();
}
var valueHandlingContext = new TypeHandlingContext(context)
{
Type = valueType,
TypeName = valueType.GetPresentableName(context.PresentationLanguage),
TypeOwnerName = String.Format("{0}.Value", context.TypeOwnerName)
};
ITypeHandler valueHandler = TypeHandlers.All.FirstOrDefault(h => h.CanHandle(valueHandlingContext));
if (valueHandler == null)
{
throw new NotSupportedException();
}
context.Builder.AppendFormat("tmp = BitConverter.GetBytes({0}.HasValue);", context.TypeOwnerName);
context.Builder.Append("Array.Copy(tmp, 0, bytes, index, tmp.Length);");
context.Builder.Append("index += tmp.Length;");
context.Builder.AppendFormat("if({0}.HasValue)", context.TypeOwnerName).Append("{");
valueHandler.HandleWrite(valueHandlingContext);
context.Builder.Append("}");
}
public void HandleWrite(TypeHandlingContext context)
{
IDeclaredType valueType = context.Type.GetScalarType();
if (valueType == null)
{
throw new NotSupportedException();
}
ITypeHandler valueHandler = TypeHandlers.All.SingleOrDefault(h => h.CanHandle(context.WithType(valueType)));
if (valueHandler == null)
{
throw new NotSupportedException();
}
String indexName = context.Variables.Declare(Index);
var exists = context.Variables.Declare(VariableKeys.NotNull);
context.Builder.AppendFormat("var {0} = {1} != null;", exists, context.TypeOwnerName);
TypeHandlers.Boolean.HandleWrite(new TypeHandlingContext(context)
{
TypeOwnerName = exists
});
context.Builder.AppendFormat("if({0})", exists);
context.Builder.Append("{");
TypeHandlers.Int32.HandleWrite(new TypeHandlingContext(context)
{
TypeName = TypeHandlers.Int32.TypeName,
TypeOwnerName = String.Format("{0}.Length", context.TypeOwnerName)
});
context.Builder.AppendFormat("if({0}.Length > 0)", context.TypeOwnerName);
context.Builder.Append("{");
context.Builder.AppendFormat("for(Int32 {0} = 0; {0} < {1}.Length; {0}++)", indexName, context.TypeOwnerName);
context.Builder.Append("{");
valueHandler.HandleWrite(new TypeHandlingContext(context)
{
TypeName = valueType.GetPresentableName(context.PresentationLanguage),
TypeOwnerName = String.Format("{0}[{1}]", context.TypeOwnerName, indexName)
});
context.Builder.Append("}}}");
context.Variables.Dispose(Index);
}
protected override void Generate(CSharpGeneratorContext context,
IMethodDeclaration declaration,
IList <GeneratorDeclaredElement <ITypeOwner> > elements,
CSharpElementFactory factory)
{
var owner = (IParametersOwner)declaration.DeclaredElement;
if (owner == null)
{
return;
}
var ctx = new TypeHandlingContext(context);
ctx.Builder.Append("{");
ctx.Builder.AppendFormat("var index = startIndex;");
ctx.Builder.AppendFormat("Byte[] tmp;");
if (elements.Count > 0)
{
foreach (var element in elements)
{
ctx.Resolve(element.DeclaredElement);
ITypeHandler handler = TypeHandlers.All.FirstOrDefault(h => h.CanHandle(ctx));
if (handler != null)
{
handler.HandleWrite(ctx);
}
}
}
ctx.Builder.Append("return index;").Append("}");
IBlock body = factory.CreateBlock(ctx.Builder.ToString(), ctx.Args.ToArray());
declaration.SetBody(body);
}