public ExpectedTypeBindingProperty GetExpectedType(AssignedPropertyBindingProperty property = null)
{
var prop = property?.DotvvmProperty;
if (prop == null)
{
return(new ExpectedTypeBindingProperty(typeof(object)));
}
return(new ExpectedTypeBindingProperty(prop.IsBindingProperty ? (prop.PropertyType.GenericTypeArguments.SingleOrDefault() ?? typeof(object)) : prop.PropertyType));
}
public ExpectedTypeBindingProperty GetExpectedType(AssignedPropertyBindingProperty property = null)
{
var prop = property?.DotvvmProperty;
if (prop == null)
{
return(new ExpectedTypeBindingProperty(typeof(object)));
}
return(new ExpectedTypeBindingProperty(prop.IsBindingProperty ? typeof(object) : prop.PropertyType));
}
public BindingResolverCollection GetAdditionalResolversFromProperty(AssignedPropertyBindingProperty property = null, DataContextStack stack = null)
{
var prop = property?.DotvvmProperty;
if (prop == null)
{
return(new BindingResolverCollection(Enumerable.Empty <Delegate>()));
}
return(new BindingResolverCollection(
(prop.PropertyInfo?.GetCustomAttributes <BindingCompilationOptionsAttribute>() ?? Enumerable.Empty <BindingCompilationOptionsAttribute>())
.SelectMany(o => o.GetResolvers())
.Concat(stack.EnumerableItems().Reverse().SelectMany(s => s.BindingPropertyResolvers))
.ToImmutableArray()));
}
public IdBindingProperty CreateBindingId(
OriginalStringBindingProperty originalString = null,
ParsedExpressionBindingProperty expression = null,
DataContextStack dataContext = null,
ResolvedBinding resolvedBinding = null,
AssignedPropertyBindingProperty assignedProperty = null)
{
var sb = new StringBuilder();
// don't append expression when original string is present, so it does not have to be always exactly same
if (originalString != null)
{
sb.Append(originalString.Code);
}
else
{
sb.Append(expression.ToString());
}
sb.Append("|||");
sb.Append(dataContext?.GetHashCode());
sb.Append("|||");
sb.Append(assignedProperty?.DotvvmProperty?.FullName);
sb.Append(assignedProperty?.DotvvmProperty?.GetHashCode());
if (resolvedBinding?.TreeRoot != null)
{
var bindingIndex = bindingCounts.GetOrCreateValue(resolvedBinding.TreeRoot).AddOrUpdate(dataContext, 0, (_, i) => i + 1);
sb.Append("|||");
sb.Append(bindingIndex);
}
using (var sha = System.Security.Cryptography.SHA256.Create())
{
var hash = sha.ComputeHash(Encoding.Unicode.GetBytes(sb.ToString()));
// use just 12 bytes = 96 bits
return(new IdBindingProperty(Convert.ToBase64String(hash, 0, 12)));
}
}
public LocationInfoBindingProperty GetLocationInfo(ResolvedBinding resolvedBinding, AssignedPropertyBindingProperty assignedProperty = null)
{
return(new LocationInfoBindingProperty(
resolvedBinding.TreeRoot?.FileName,
resolvedBinding.DothtmlNode?.Tokens?.Select(t => (t.StartPosition, t.EndPosition)).ToArray(),
resolvedBinding.DothtmlNode?.Tokens?.FirstOrDefault()?.LineNumber ?? -1,
resolvedBinding.GetAncestors().OfType <ResolvedControl>().FirstOrDefault()?.Metadata?.Type,
assignedProperty?.DotvvmProperty
));
}
public BindingCompilationRequirementsAttribute GetAdditionalResolversFromProperty(AssignedPropertyBindingProperty property)
{
var prop = property?.DotvvmProperty;
if (prop == null)
{
return(new BindingCompilationRequirementsAttribute());
}
return
(new [] { new BindingCompilationRequirementsAttribute() }
.Concat(prop.PropertyInfo?.GetCustomAttributes <BindingCompilationRequirementsAttribute>() ?? Enumerable.Empty <BindingCompilationRequirementsAttribute>())
.Aggregate((a, b) => a.ApplySecond(b)));
}
public IdBindingProperty CreateBindingId(
OriginalStringBindingProperty originalString = null,
ParsedExpressionBindingProperty expression = null,
DataContextStack dataContext = null,
ResolvedBinding resolvedBinding = null,
AssignedPropertyBindingProperty assignedProperty = null)
{
var sb = new StringBuilder();
if (resolvedBinding?.TreeRoot != null && dataContext != null)
{
var bindingIndex = bindingCounts.GetOrCreateValue(resolvedBinding.TreeRoot).AddOrUpdate(dataContext, 0, (_, i) => i + 1);
sb.Append(bindingIndex);
sb.Append(" || ");
}
// don't append expression when original string is present, so it does not have to be always exactly same
if (originalString != null)
{
sb.Append(originalString.Code);
}
else
{
sb.Append(expression.Expression.ToString());
}
sb.Append(" || ");
while (dataContext != null)
{
sb.Append(dataContext.DataContextType.FullName);
sb.Append('(');
foreach (var ns in dataContext.NamespaceImports)
{
sb.Append(ns.Alias);
sb.Append('=');
sb.Append(ns.Namespace);
}
sb.Append(';');
foreach (var ext in dataContext.ExtensionParameters)
{
sb.Append(ext.Identifier);
if (ext.Inherit)
{
sb.Append('*');
}
sb.Append(':');
sb.Append(ext.ParameterType.FullName);
sb.Append(':');
sb.Append(ext.GetType().FullName);
}
sb.Append(") -- ");
dataContext = dataContext.Parent;
}
sb.Append(" || ");
sb.Append(assignedProperty?.DotvvmProperty?.FullName);
using (var sha = System.Security.Cryptography.SHA256.Create())
{
var hash = sha.ComputeHash(Encoding.Unicode.GetBytes(sb.ToString()));
// use just 12 bytes = 96 bits
return(new IdBindingProperty(Convert.ToBase64String(hash, 0, 12)));
}
}
