private void removeProperties(ModelMap map, ModelMap overrides, ModelMapDiffOptions options)
{
options.Removals.Each(_ => executeRemoveInstruction(map, overrides, options, _));
var prunedInstructions = new List <IModelMapInstruction>();
var contexts = new Stack <IModelMapInstruction>();
foreach (var instruction in map.Instructions)
{
if (contexts.Count != 0)
{
var previous = contexts.Peek();
var previousType = previous.GetType();
if ((previousType == typeof(BeginRelation) && instruction.GetType() == typeof(EndRelation)) ||
(previousType == typeof(BeginAdHocRelation) && instruction.GetType() == typeof(EndRelation)))
{
prunedInstructions.Add(previous);
prunedInstructions.Add(instruction);
contexts.Pop();
continue;
}
}
contexts.Push(instruction);
}
prunedInstructions.Each(map.RemoveInstruction);
}
private void addProperties(ModelMap map, ModelMap overrides, ModelMapDiffOptions options)
{
var targetIndex = -1;
var instructionsToAdd = new List <IModelMapInstruction>();
var contexts = new Stack <IModelMapInstruction>();
foreach (var instruction in overrides.Instructions.Where(_ => _.GetType() != typeof(Instructions.RemoveProperty)).ToArray())
{
var mapInstructions = map.Instructions.ToList();
if (shouldOffset(instruction, options))
{
var i = mapInstructions.IndexOf(instruction);
if (i != -1)
{
targetIndex = i + 1;
}
}
if (targetIndex == -1)
{
continue;
}
var context = options.PropertyContexts.SingleOrDefault(_ => _.Matches(instruction.GetType()));
if (context != null && mapInstructions.IndexOf(instruction) == -1)
{
contexts.Push(context.WaitFor());
}
if (contexts.Count != 0)
{
instructionsToAdd.Add(instruction);
}
if (contexts.Count != 0 && contexts.Peek().GetType() == instruction.GetType())
{
contexts.Pop();
}
if (contexts.Count == 0 && instructionsToAdd.Count != 0)
{
map.InsertInstructions(targetIndex, instructionsToAdd);
targetIndex += instructionsToAdd.Count;
instructionsToAdd.Clear();
}
}
}
private void executeRemoveInstruction(ModelMap map, ModelMap overrides, ModelMapDiffOptions options, ConfiguredRemoval remove)
{
var targetIndex = 0;
var mapInstructions = map.Instructions.ToList();
var sets = new List <InstructionSet>();
foreach (var instruction in overrides.Instructions)
{
if (shouldOffset(instruction, options))
{
var i = mapInstructions.IndexOf(instruction);
if (i != -1)
{
targetIndex = i;
}
else
{
targetIndex += 1;
}
}
if (instruction.GetType().CanBeCastTo(remove.InstructionType))
{
var removal = instruction as IModelMapRemovalInstruction;
if (removal != null)
{
var set = remove.Find(map, removal.Key, targetIndex);
sets.Add(set);
}
}
}
var offset = 0;
foreach (var set in sets)
{
map.Remove(set, offset);
offset += set.Instructions.Count();
}
}
public ModelMapOverrideParser(IModelMapParser inner, IModelMapDiff diff, ModelMapDiffOptions options)
{
_inner = inner;
_diff = diff;
_options = options;
}
public void Diff(ModelMap map, ModelMap overrides, ModelMapDiffOptions options)
{
removeProperties(map, overrides, options);
addProperties(map, overrides, options);
}
private static bool shouldOffset(IModelMapInstruction instruction, ModelMapDiffOptions options)
{
return(options.Offsets.Contains(instruction.GetType()));
}