Relation GetOrCreateRelation(ParsedInRelationExpression rel, Dictionary<string, KAOSTools.MetaModel.Entity> declarations)
{
dynamic identifierOrName = rel.Relation;
Relation type;
if (identifierOrName is NameExpression) {
type = model.Relations().SingleOrDefault (t => t.Name == identifierOrName.Value);
} else if (identifierOrName is IdentifierExpression) {
type = model.Relations().SingleOrDefault (t => t.Identifier == identifierOrName.Value);
} else {
throw new NotImplementedException ();
}
if (type == null) {
if (identifierOrName is NameExpression) {
type = new Relation(model) { Name = identifierOrName.Value, Implicit = true };
} else if (identifierOrName is IdentifierExpression) {
type = new Relation(model) { Identifier = identifierOrName.Value, Implicit = true };
}
foreach (var arg in rel.Variables) {
type.Links.Add (new Link(model) { Target = declarations[arg] });
}
model.Add (type);
Declarations.Add (type, new List<Declaration> () {
new Declaration (identifierOrName.Line, identifierOrName.Col, identifierOrName.Filename, relativePath, DeclarationType.Reference)
});
} else {
// Check that types matches
// TODO make this shit more robust. In the case of two links to a same entity, this
// check will fail...
foreach (var arg in rel.Variables) {
if (type.Links.Count(x => x.Target == declarations[arg]) == 0) {
throw new CompilationException ("Relation and formal spec are incompatible.");
}
}
Declarations[type].Add (
new Declaration (identifierOrName.Line, identifierOrName.Col, identifierOrName.Filename, relativePath, DeclarationType.Reference)
);
}
return type;
}
public static MvcHtmlString GetLink(this HtmlHelper helper, Relation relation)
{
return helper.ActionLink (relation.FriendlyName, "GoalModel");
}