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		Qowaiv.Analyzers.CSharp

Qowaiv (static code) analyzers

Contains Roslyn (static code) diagnostic analyzers.

Rules

• QW0001 - Use a testable Time Provider
• QW0003 - Decorate pure functions
• QW0004 - Characters with Trojan Horse potential are not allowed
• QW0005 - Seal concrete classes unless designed for inheritance
• QW0006 - Only unsealed concrete classes should be decorated as inheritable
• QW0007 - Use file-scoped namespace declarations
• QW0008 - Define properties as not-nullable for types with a defined empty state
• QW0009 - Define properties as not-nullable for enums with a defined none/empty value
• QW0010 - Use System.DateOnly instead of Qowaiv.Date
• QW0011 - Define properties as immutables
• QW0012 - Use immutable types for properties
• QW0013 - Use Qowaiv decimal rounding
• QW0014 - Define global using statements separately
• QW0015 - Define global using statements in single file
• QW0016 - Prefer regular over positional properties
• QW0017 - Apply arithmetic operations on non-nullables only
• QW0018 - Use Qowaiv.Clock.TimeProvider
• QW0019 - Prefer XML to LINQ over DOM
• QW0020 - Prefer System.Text.Json over Newtonsoft.Json
• QW0021 - Use leading zeros to define date constants
• QW0022 - Use compliant GUID literals
• QW0023 - Provide GUID values
• QW0024 - Create GUID's using Guid.Parse or Guid.Empty
• QW0025 - Use compliant UUID literals
• QW0026 - Provide UUID values
• QW0027 - Create UUID's using Uuid.Parse or Uuid.Empty
• QW0028 - Prefer strongly typed identifiers over GUIDs
• QW0029 - Prefer strongly typed identifiers over primitives

Data Annotation rules

• QW0100 - Define only one Required attribute
• QW0101 - Required attribute cannot invalidate value types
• QW0102 - Use compliant validation attributes
• QW0103 - Decorate validation attributes
• QW0104 - Use validates attribute on validation attributes only

Code fixes

• Use Qowaiv.Clock (QW0001, S6354)
• Seal class (QW0005)
• Change property type to not-nullable (QW0008, QW0009)
• Change type System.DateOnly (QW0010)
• Apply suggestions of obsolete code attribute CS0618, CS0619)
• Use Qowaiv round extensions (QW0013)
• Convert positional properties (QW0016)
• Use Qowaiv.Clock.TimeProvider (QW0018)
• Add leading zero(s) (QW0021)
• Generate GUIDs (QW0022, QW0023, QW0024)
• Generate UUIDs (QW0025, QW0026, QW0027)

Configuration

Some of the rules are not intended for (unit) test code. Unit tests that set IsTestProject to true are excluded. When setting IsTestProject is undesirable, a project can set IsTestCode to true instead. It is worth to mention that only a subset of the rules is considered irrelevant for test code, the rest is always executed.