codedom

I'm working on an application where I'd like to dynamically generate code for a numerical calculation (for performance). Doing this calculation as a data driven operation is too slow. To describe my requirements, consider this class: class Simulation { Dictionary<string, double> nodes; double t, dt; private void ProcessOneSample() { t += dt; // Expensive operation that computes the state of nodes at the current t. } public void Process(int N, IDictionary<string, double[]> Input, IDictionary<string, double[]> Output) { for (int i = 0; i < N; ++i) { foreach (KeyValuePair<string, double[]> j in

Is there a way to generate a dictionary initializer using the C# CodeDom? Are those supported at all? I would like to have: private IDictionary<string, string> map = new Dictionary<string, string> { { "Name", "Value" }, ... }; This is not possible using the CodeDom constructs. They were not updated for collection initializers. LukeH has an excellent blog post on the subject of 3.5 features and the CodeDom http://blogs.msdn.com/b/lukeh/archive/2007/07/11/c-3-0-and-codedom.aspx You can do it but its possibly the worst nightmare ever.. Here is how I am doing it currently. (Updated my answer to

Aside from C#, VB.NET, C++ (Managed and C++/CLI), and F#, which .NET programming languages have their own CodeDom provider? I thought about making one for UnrealScript, but I run into odd issues like the fact that CodeBinaryOperatorType doesn't include an exclusive-or operation. The new expression trees in .NET 4 seem like a much better representation of what features the CodeDom should offer at a block level (as in a block of statements that makes up a function body). I think we need a new CodeDom that takes the outer portions of System.CodeDom and uses the internals of System.Linq

Here's what I want the resulting class declaration to look like: public sealed partial class Refund : DataObjectBase<Refund> { } } This code (snipped): targetClass = new CodeTypeDeclaration(className); targetClass.IsClass = true; targetClass.TypeAttributes = TypeAttributes.Public | TypeAttributes.Sealed; targetClass.IsPartial = true; //partial so that genn'ed code can be safely modified targetClass.TypeParameters.Add(new CodeTypeParameter{ Name=className}); targetClass.BaseTypes.Add(new CodeTypeReference { BaseType = "DataObjectBase", Options = CodeTypeReferenceOptions.GenericTypeParameter });

Can you explain very briefly what CodeDOM is and used for with a simple real life example? A simple example that covers why would I need it as a developer, in what scenarios? Thanks CodeDOM stands for Code Document Object Model. Basically, it is your code represented by a hierarchical tree of objects, a model.. Consider a method with some statements in it: int Foo(int bar) { int i = 0; if ( bar == 1 ) i = 1; return i; } This would result in a DOM as follows: method foo declaration if (expression) assignment return A model like this that represents your code allows you to perform various

I've got a situation where I need to generate a class with a large string const. Code outside of my control causes my generated CodeDom tree to be emitted to C# source and then later compiled as part of a larger Assembly. Unfortunately, I've run into a situation whereby if the length of this string exceeds 335440 chars in Win2K8 x64 (926240 in Win2K3 x86), the C# compiler exits with a fatal error: fatal error CS1647: An expression is too long or complex to compile near 'int' MSDN says CS1647 is "a stack overflow in the compiler" (no pun intended!). Looking more closely I've determined that the