Feature Request: use "is null" instead of "== null" and vice versa

[TobiasSekan]

Hello,

It would be nice when rosylnator have code analysis and refactoring for
is null and == null

// before refactoring
if(parameter == null)
{
    parameter = newValue;
}

// after refactoring
if(parameter is null)
{
    parameter = newValue;
}

// and vice versa

• Visual Studio 2017 - 15.9.0 - Preview 5.0
• Roslynator 2017 - 2.0.0

[josefpihrt]

Are you proposing analyzer or refactoring?

[TobiasSekan]

The first -> Analyzer (+ Code Fix)

Analyzer rules:

1. use always == null instead of is null
2. use always is null instead of == null