Contains a set of common diagnostics, code fixes and refactorings built on the Microsoft .NET Compiler Platform "Roslyn".

Requirements:

Content

Analysis:

Check parameter name in ArgumentExceptions
Parameter is not checked for null before use
Local variable(s) can be made constant
Check object to lock on
Check property name in property change and changing notifications
Unnecessary comparison to a boolean constant (boolean == true)
Empty string literal ""
Type name does not meet naming guidelines (excluding types marked with CompilerGenerated or StructLayout attribute)
Statement has no effect (e.g.: textWriter.Write("");)

Fixes:

Check parameter for null (or empty string) before use
- Throw exception conditionally
- Using Code Contracts
Make variable constant
Remove unnecessary comparison to boolean
Introduce lock object, when the current one is not recommended
- Introduce instance-level object
- Introduce static object
Use String.Empty instead of ""
Fix type name, if does not meet naming guidelines
Remove statement, which has no effect

Refactorings:

Implement property change notification (and property changing notification)
- The regualar way
- Using compiler services
Introduce and assign from constuctor parameter
- Protected read-only field
- Public property
Check parameter for
- null (throw exception, code contracts)
- empty string (string)
- negative number (int)
- later than today (DateTime)
- IntPtr.Zero (IntPtr)
Generate singleton property
- With initial value
- With lazy loading
- With lazy loading using System.Lazy<T>
- With locking and lazy loading
- With Interlocked.CompareExchange and lazy loading
Expand property declaration
Collapse property to auto-property
Expand event declaration
Promote local contant to field (+ static read-only)
Promote local to field (+ with initialization)
Use explicit typing, resolve 'var'
Convert if statement to conditional expression (assignments)
Convert constant to read-only field
Remove unnecessary braces

Demo

Check parameter for null before use

Parameter name validation in argument exceptions

Make variable constant

Property name validation in property change and changing notifications

Source Code

Source code will be available on CodePlex soon.

Change Log

0.1.17

0.1.16

Implementing property change notification supports implementing property changing notification as well
Refactor: Convert constant to read-only field

0.1.15

Fix: Check parameter for null or empty string
Refactoring: Check parameter for null, empty string, negative number, later than today, IntPtr.Zero
Collapse to auto-property supports initializer expression
Bug fix: Collapse to auto-property removes only the corresponding variable from a field declaration (it may contain multiple declarations).

0.1.14

0.1.13

0.1.12

Refactoring: Introduce read-only field or property from constructor parameter
Analysis: Do not lock on null, strings, typeof (public types) and 'this' objects
Bug fixes