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feat: support for enum naming strategy mappings
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| using System.Globalization; | ||
| using System.Text.RegularExpressions; | ||
| using Microsoft.CodeAnalysis; | ||
| using Riok.Mapperly.Abstractions; | ||
|
|
||
| namespace Riok.Mapperly.Helpers; | ||
|
|
||
| public static class EnumNamingStrategyHelper | ||
| { | ||
| public static Dictionary<IFieldSymbol, string> BuildCustomNameStrategyMappings( | ||
| this ITypeSymbol enumSymbol, | ||
| EnumNamingStrategy namingStrategy | ||
| ) | ||
| { | ||
| var customNameMappings = new Dictionary<IFieldSymbol, string>(SymbolEqualityComparer.Default); | ||
|
|
||
| var values = enumSymbol.GetMembers().OfType<IFieldSymbol>(); | ||
| foreach (var value in values) | ||
| { | ||
| var valueString = ConvertEnumValueNameToString(value.Name, namingStrategy); | ||
| customNameMappings.Add(value, valueString); | ||
| } | ||
|
|
||
| return customNameMappings; | ||
| } | ||
|
|
||
| private static string ConvertEnumValueNameToString(string enumValueName, EnumNamingStrategy namingStrategy) | ||
| { | ||
| return namingStrategy switch | ||
| { | ||
| EnumNamingStrategy.PascalCase => enumValueName, | ||
| EnumNamingStrategy.SnakeCase => JoinWordsFrom("_", enumValueName), | ||
| EnumNamingStrategy.KebabCase => JoinWordsFrom("-", enumValueName), | ||
| _ => throw new ArgumentOutOfRangeException($"{nameof(namingStrategy)} has an unknown value {namingStrategy}"), | ||
| }; | ||
| } | ||
|
|
||
| private static string[] SplitEnumValueNameIntoWords(string enumValueName) | ||
| { | ||
| // Matches (or): | ||
| // [A-Z][a-z]+ | ||
| // - A word starting with an uppercase letter, followed by lowercase letters ("Word" or "Word123") | ||
| // [A-Z]+(?![a-z]) | ||
| // - One or more uppercase letters, with no lowercase letters after ("ID" or "C1") | ||
| // \d+ | ||
| // - One or more digits ("123") | ||
| // "Pascal1CaseID2_3" = "Pascal1" + "Case" + "ID2" + "3" | ||
| #pragma warning disable MA0009 | ||
| var words = Regex.Matches(enumValueName, @"[A-Z][a-z]+|[A-Z]+(?![a-z])|\d+"); | ||
| #pragma warning restore MA0009 | ||
| return (from Match word in words select word.Value).ToArray(); | ||
| } | ||
|
|
||
| private static string JoinWordsFrom(string separator, string enumValueName) | ||
| { | ||
| var lowerCaseWords = SplitEnumValueNameIntoWords(enumValueName).Select(w => w.ToLower(CultureInfo.InvariantCulture)); | ||
| return string.Join(separator, lowerCaseWords); | ||
| } | ||
| } |
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