// TODO: Put strings into the resources.
//
public static MemberInfo ExtractMember(LambdaExpression expr, string altExprArgName = default)
{
var argName = string.IsNullOrEmpty(altExprArgName) ? nameof(expr) : altExprArgName.FmtStr().G();
expr.EnsureNotNull(argName);
//
var exprBody = expr.Body;
if (exprBody is MemberExpression bodyAsMemberExpr)
{
return(bodyAsMemberExpr.Member);
}
else if (exprBody is MethodCallExpression bodyAsMethodCallExpr)
{
return(bodyAsMethodCallExpr.Method);
}
else
{
throw new ArgumentException(message: $"Specified expression does not access a member and doesn't access a method.{Environment.NewLine}\tExpression:{expr.FmtStr().GNLI2()}", paramName: argName);
}
}
// TODO: Put exception messages into the resources.
//
public static PropertyInfo ExtractNonStaticProperty(LambdaExpression propExpr, string altPropExprArgName = default)
{
var prop = ExtractMember(propExpr, altExprArgName: string.IsNullOrEmpty(altPropExprArgName) ? nameof(propExpr) : altPropExprArgName) as PropertyInfo;
if (prop is null)
{
throw
new ArgumentException(
message: $"Specified member access expression does not access a property.{Environment.NewLine}\tExpression:{propExpr.FmtStr().GNLI2()}",
paramName: string.IsNullOrEmpty(altPropExprArgName) ? nameof(propExpr) : altPropExprArgName);
}
else
{
prop.Arg(string.IsNullOrEmpty(altPropExprArgName) ? nameof(propExpr) : altPropExprArgName).EnsureNonStatic();
return(prop);
}
}
// TODO: Put strings into the resources.
//
public static void EnsurePropertyReadExpression(LambdaExpression instance, LambdaExpression prop, string altInstanceArgName = default, string altPropArgName = default)
{
if (!IsPropertyReadExpression(instance: instance, prop: prop, altInstanceArgName: altInstanceArgName, altPropArgName: altPropArgName))
{
throw
new ArgumentException(
message: $"Specified expression is not an expression reading a property of the specified type.{Environment.NewLine}\tExpression:{prop.FmtStr().GNLI2()}{Environment.NewLine}\tType:{instance.ReturnType.FmtStr().GNLI2()}",
paramName: string.IsNullOrEmpty(altPropArgName) ? nameof(prop) : altPropArgName);
}
}
static void P_EnsureDefinedProperty(Type type, LambdaExpression propExpr, out PropertyInfo extractedPropInfo, string altTypeArgName = null, string altPropExprArgName = null)
{
if (!P_IsDefinedProperty(type, propExpr, out extractedPropInfo, altTypeArgName: altTypeArgName, altPropExprArgName: altPropExprArgName))
{
throw new ArgumentException(message: $"Specified type doesn't have a property specified by expression.{Environment.NewLine}\tType:{type.FmtStr().GNLI2()}{Environment.NewLine}\tExpression:{propExpr.FmtStr().GNLI2()}", paramName: string.IsNullOrEmpty(altPropExprArgName) ? "propertyExpression" : altPropExprArgName);
}
}