public static Action <T, TMember> CreateSetter <T, TMember>(this Expression <Func <T, TMember> > expression)
{
Debug.Assert(expression.Body is MemberExpression, "Expression is not property or field selector");
Debug.Assert(((MemberExpression)expression.Body).Member is PropertyInfo || ((MemberExpression)expression.Body).Member is FieldInfo, "Expression is not property or field selector");
Debug.Assert(Obfuscator.CheckAttribute(((MemberExpression)expression.Body).Member), "Missing obfuscation attribute: [Obfuscation(Feature = Obfuscator.NoRename, Exclude = true)]");
var member = (MemberExpression)expression.Body;
if (member.Member is PropertyInfo)
{
ParameterExpression paramExpression = Expression.Parameter(typeof(T));
ParameterExpression paramExpression2 = Expression.Parameter(typeof(TMember));
MemberExpression propertyGetterExpression = Expression.Property(paramExpression, (PropertyInfo)member.Member);
return(Expression.Lambda <Action <T, TMember> >(Expression.Assign(propertyGetterExpression, paramExpression2), paramExpression, paramExpression2).Compile());
}
else
{
var info = (FieldInfo)member.Member;
ParameterExpression objParm = Expression.Parameter(info.DeclaringType, "obj");
ParameterExpression valueParm = Expression.Parameter(info.FieldType, "value");
MemberExpression memberExpr = Expression.Field(objParm, info.Name);
Expression assignExpr = Expression.Assign(memberExpr, valueParm);
return(Expression.Lambda <Action <T, TMember> >(assignExpr, objParm, valueParm).Compile());
}
}
public static Func <T, TMember> CreateGetter <T, TMember>(this Expression <Func <T, TMember> > expression)
{
Debug.Assert(expression.Body is MemberExpression, "Expression is not property or field selector");
Debug.Assert(((MemberExpression)expression.Body).Member is PropertyInfo || ((MemberExpression)expression.Body).Member is FieldInfo, "Expression is not property or field selector");
Debug.Assert(Obfuscator.CheckAttribute(((MemberExpression)expression.Body).Member), "Missing obfuscation attribute: [Obfuscation(Feature = Obfuscator.NoRename, Exclude = true)]");
var member = (MemberExpression)expression.Body;
if (member.Member is PropertyInfo)
{
ParameterExpression paramExpression = Expression.Parameter(typeof(T), "value");
Expression propertyGetterExpression = Expression.Property(paramExpression, (PropertyInfo)member.Member);
return(Expression.Lambda <Func <T, TMember> >(propertyGetterExpression, paramExpression).Compile());
}
else
{
var info = (FieldInfo)member.Member;
return(info.CreateGetter <T, TMember>());
}
}