Add strip-enum-member-type-name config option.

Author: fredrikhr

README.md

@@ -256,6 +256,10 @@ Options:
   generate-unmanaged-constants           Unmanaged constants should be generated using static ref readonly properties. This is currently experimental.
   generate-vtbl-index-attribute          [VtblIndex(#)] attribute should be generated to document the underlying VTBL index for a helper method.
 
+  # Stripping Options
+
+  strip-enum-member-type-name            Strips the enum type name from the beginning of its member names.
+
   # Logging Options
 
   log-exclusions                         A list of excluded declaration types should be generated. This will also log if the exclusion was due to an exact or partial match.

sources/ClangSharp.PInvokeGenerator/PInvokeGenerator.VisitDecl.cs

@@ -19,6 +19,7 @@
 using static ClangSharp.Interop.CXUnaryOperatorKind;
 using static ClangSharp.Interop.CXEvalResultKind;
 using static ClangSharp.Interop.CXTypeKind;
+using System.Text.RegularExpressions;
 
 namespace ClangSharp;
 
@@ -294,6 +295,13 @@ private void VisitEnumConstantDecl(EnumConstantDecl enumConstantDecl)
             parentName = _outputBuilder.Name;
         }
 
+        var strippedName = escapedName;
+        if (Config.StripEnumMemberTypeName)
+        {
+            Regex stripParentNameRegex = new($"^{Regex.Escape(parentName)}_*");
+            strippedName = stripParentNameRegex.Replace(escapedName, string.Empty);
+        }
+
         var kind = isAnonymousEnum ? ValueKind.Primitive : ValueKind.Enumerator;
         var flags = ValueFlags.Constant;
 
@@ -305,7 +313,7 @@ private void VisitEnumConstantDecl(EnumConstantDecl enumConstantDecl)
         var desc = new ValueDesc {
             AccessSpecifier = accessSpecifier,
             TypeName = typeName,
-            EscapedName = escapedName,
+            EscapedName = Config.StripEnumMemberTypeName ? strippedName : escapedName,
             NativeTypeName = null,
             ParentName = parentName,
             Kind = kind,

sources/ClangSharp.PInvokeGenerator/PInvokeGeneratorConfiguration.cs

@@ -265,6 +265,8 @@ public IReadOnlyCollection<string> ExcludedNames
 
     public bool GenerateVtblIndexAttribute => _options.HasFlag(PInvokeGeneratorConfigurationOptions.GenerateVtblIndexAttribute);
 
+    public bool StripEnumMemberTypeName => _options.HasFlag(PInvokeGeneratorConfigurationOptions.StripEnumMemberTypeName);
+
     public string HeaderText => _headerText;
 
     [AllowNull]

sources/ClangSharp.PInvokeGenerator/PInvokeGeneratorConfigurationOptions.cs

@@ -86,4 +86,6 @@ public enum PInvokeGeneratorConfigurationOptions : long
     GenerateCallConvMemberFunction = 1L << 37,
 
     GenerateGenericPointerWrapper = 1L << 38,
+
+    StripEnumMemberTypeName = 1L << 39,
 }

sources/ClangSharpPInvokeGenerator/Program.cs

@@ -177,6 +177,12 @@ public static class Program
         new TwoColumnHelpRow("generate-unmanaged-constants", "Unmanaged constants should be generated using static ref readonly properties. This is currently experimental."),
         new TwoColumnHelpRow("generate-vtbl-index-attribute", "[VtblIndex(#)] attribute should be generated to document the underlying VTBL index for a helper method."),
 
+        new TwoColumnHelpRow("", ""),
+        new TwoColumnHelpRow("# Stripping Options", ""),
+        new TwoColumnHelpRow("", ""),
+
+        new TwoColumnHelpRow("strip-enum-member-type-name", "Strips the enum type name from the beginning of its member names."),
+
         new TwoColumnHelpRow("", ""),
         new TwoColumnHelpRow("# Logging Options", ""),
         new TwoColumnHelpRow("", ""),
@@ -617,6 +623,14 @@ public static void Run(InvocationContext context)
                     break;
                 }
 
+                // Strip Options
+
+                case "strip-enum-member-type-name":
+                {
+                    configOptions |= PInvokeGeneratorConfigurationOptions.StripEnumMemberTypeName;
+                    break;
+                }
+
                 // Legacy Options
 
                 case "default-remappings":