public ParsedExpressionBindingProperty GetExpression(OriginalStringBindingProperty originalString, DataContextStack dataContext, BindingParserOptions options, ExpectedTypeBindingProperty expectedType = null)
{
var expr = bindingParser.ParseWithLambdaConversion(originalString.Code, dataContext, options, expectedType?.Type ?? typeof(object));
if (expr is StaticClassIdentifierExpression)
{
throw new Exception($"'{originalString.Code}' is a static class reference, not a valid expression.");
}
else if (expr is UnknownStaticClassIdentifierExpression)
{
expr = expr.Reduce();
}
return(new ParsedExpressionBindingProperty(expr));
}
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 IdBindingProperty CreateBindingId(
OriginalStringBindingProperty originalString = null,
ParsedExpressionBindingProperty expression = null,
DataContextStack dataContext = null,
ResolvedBinding resolvedBinding = null,
LocationInfoBindingProperty locationInfo = 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(locationInfo?.RelatedProperty?.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)));
}
}
public ParsedExpressionBindingProperty GetExpression(OriginalStringBindingProperty originalString, DataContextStack dataContext, BindingParserOptions options)
{
var expr = bindingParser.Parse(originalString.Code, dataContext, options);
return(new ParsedExpressionBindingProperty(expr.Reduce()));
}
