Is there a way to decompile a single function/method call?

[compasslg]

Hey friends! I looked online, and it was suggested to use ICSharpCode.Decompiler.Ast.AstBuilder to do it, but it seems like this class no longer exist. So is there a replacement for it? tbh there are few documentation and up to date example to it, which sucks.

It would be best to decompile a single method call (which should be possible considering how ILSpy displays c# code and IL code together), but I'll accept decompiling an entire method too.

Any ideas?

[dgrunwald]

class AstBuilder was replaced by class CSharpDecompiler in ILSpy 3.0.

You can decompile a single method using CSharpDecompiler.Decompile(), passing in the MethodDefinitionHandle.
The "C# with IL" view works by decompiling the whole method, generating sequence points (debug information) for the decompiled code; and then using those sequence points to map the generated statements back to the IL instructions.
https://github.com/icsharpcode/ILSpy/blob/master/ILSpy/Languages/CSharpILMixedLanguage.cs

[compasslg]

Thank you! But how am I supposed to get the MethodDefinitionHandle out of a MethodDefinition?

[dgrunwald]

Use MetadataTokens.EntityHandle to convert a metadata token into a handle.
var handle = (MethodDefinitionHandle)MetadataTokens.EntityHandle(cecilMethod.MetadataToken.ToInt32())

See this wiki page for more information on the switch from Cecil to System.Reflection.Metadata.