public string CreateUniqueMapperMethodNameWithGuid(TypePair typePair)
{
string guid = NamingTools.NewGuid(MaxGuidLength);
string normSrcName = NamingTools.ToAlphanumericOnly(typePair.SourceType.Name);
string normDestName = NamingTools.ToAlphanumericOnly(typePair.DestinationType.Name);
return($"Mapper_{normSrcName}_{normDestName}_{guid}");
}
public static string For(string innerCode, ForDeclarationContext ctx)
{
var builder = new StringBuilder();
string index = "index_" + NamingTools.NewGuid(4);
builder.AppendLine($" for (int {index} = 0; {index} < {ctx.SrcCollection}.Count; {index}++)");
builder.AppendLine(" {");
builder.AppendLine($" var {ctx.SrcVariable} = {ctx.SrcCollection}.ElementAt({index});");
builder.AppendLine($" var {ctx.DestVariable} = {ctx.DestCollection}.ElementAt({index});");
builder.AppendLine(innerCode);
builder.AppendLine(" }");
string forCode = builder.ToString();
return(forCode);
}
private string AssignCollections(IPropertyNameContext ctx)
{
var recorder = new Recorder();
var itemSrcType = ctx.SrcType.GenericTypeArguments[0];
var itemDestType = ctx.DestType.GenericTypeArguments[0];
using (var block = new Block(recorder, "if", "{1} == null"))
{
string newCollection = CreationTemplates.NewCollection(ctx.DestType, "{0}.Count");
recorder.AppendLine($"{{1}} = {newCollection};");
}
using (var block = new Block(recorder, "else"))
{
recorder.AppendLine("{1}.Clear();");
}
//fill new (or cleared) collection with the new set of items
recorder.AppendLine(CreationTemplates.Add("{1}", "{0}.Count", itemDestType));
//inner cycle variables (on each iteration itemSrcName is mapped to itemDestName).
string itemSrcName = "src_" + NamingTools.NewGuid(4);
string itemDestName = "dest_" + NamingTools.NewGuid(4);
var typePair = new TypePair(itemSrcType, itemDestType);
Assignment itemAssignment = new Assignment();
string cachedTemplate;
if (TemplateCache.TryGetValue(typePair, out cachedTemplate))
{
itemAssignment.RelativeTemplate = cachedTemplate;
}
else if (itemSrcType.IsCollectionType() && itemDestType.IsCollectionType())
{
var innerContext = PropertyNameContextFactory.CreateWithoutPropertyMap(
itemSrcType, itemDestType, itemSrcName, itemDestName);
string innerTemplate = AssignCollections(innerContext);
itemAssignment.RelativeTemplate = innerTemplate;
}
else
{
var nodeMap = GetTypeMap(typePair);
itemAssignment = ProcessTypeMap(nodeMap);
}
string iterationCode = itemAssignment.GetCode(itemSrcName, itemDestName);
string forCode = StatementTemplates.For(iterationCode,
new ForDeclarationContext("{0}", "{1}", itemSrcName, itemDestName));
recorder.AppendLine(forCode);
string template = recorder.ToAssignment().RelativeTemplate;
return(template);
}