AL0037 - Use TryParse extensions

Replace verbose TryParse ternary patterns with extension methods

Source: AL0037UseTryParseExtensionsAnalyzer.cs

Description

The pattern int.TryParse(s, out var v) ? v : null is verbose. ANcpLua.Roslyn.Utilities provides typed TryParse extensions.

Bad Code

// Verbose TryParse patterns
var number = int.TryParse(input, out var n) ? n : null;
var guid = Guid.TryParse(input, out var g) ? g : default;
var date = DateTime.TryParse(input, out var d) ? d : null;

Good Code

using ANcpLua.Roslyn.Utilities;

// Clean extension methods
var number = input.TryParseInt32();
var guid = input.TryParseGuid();
var date = input.TryParseDateTime();

Properties

• Category: Usage
• Severity: Warning
• Enabled by default: True
• Code fix available: False

Configuration

dotnet_diagnostic.AL0037.severity = warning

Supported Types

Type	Extension
int	TryParseInt32()
long	TryParseInt64()
double	TryParseDouble()
decimal	TryParseDecimal()
bool	TryParseBool()
Guid	TryParseGuid()
DateTime	TryParseDateTime()
TimeSpan	TryParseTimeSpan()