Add custom refactoring pattern using Resharper

Question

I have hundreds occurences of this kind of lines in my app :

public ICommand MyCommandName => ReactiveCommand.Create(TriggerCommand);

I tried without luck to add a Custom Pattern in resharper to change it to :

private ICommand _MyCommandName;
public ICommand MyCommandName => _MyCommandName ??= ReactiveCommand.Create(TriggerCommand);

Here is my pattern :

the pattern is ambiguous and can't be saved. Here are the placeholders :

Not an answer, just pointing out that your ??= is not thread-safe. You may want to consider making _MyCommandName lazily initialized. — NPras
– NPras, Commented Sep 18, 2024 at 0:46

mu88 · Accepted Answer · 2024-09-18 07:31:57Z

1

I'm not using R# in Visual Studio anymore, therefore I don't have access to the Structural Search and Replace feature in VS. However, using JetBrains Rider I was able to solve your task with the following RegEx which should also work in Visual Studio 🤞🏻

Search:

public (\w*) (\w*) \=\> (\w*)\.(\w*)\((\w*)\)\;

Replace:

public $1 _$2;
public $1 $2 => _$2 ??= $3.$4($5);

answered Sep 18, 2024 at 7:31

mu88

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2 Comments

Whiletrue Over a year ago

I could do it with Visual studio with the Search & Replace (with regex) : Search : public ICommand (\w*) \=\> Reactive Replace : private ICommand _$1;\n\t\tpublic ICommand $1 => _$1 ??= Reactive

Whiletrue Over a year ago

I accept this solution, even if it isn't done using Resharper

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