Add support for macro objects being UTF-8 string literals

src/cs/examples/helloworld/helloworld-app/Generated/AssemblyAttributes.g.cs

@@ -1,6 +1,6 @@
 // <auto-generated>
-//  This code was generated by the following tool on 2025-01-03 12:59:48 GMT-05:00:
-//      https://github.com/bottlenoselabs/c2cs (v2025-01-03 12:59:48 GMT-05:00)
+//  This code was generated by the following tool on 2025-01-03 14:27:37 GMT-05:00:
+//      https://github.com/bottlenoselabs/c2cs (v2025-01-03 14:27:37 GMT-05:00)
 //
 //  Changes to this file may cause incorrect behavior and will be lost if the code is regenerated.
 // </auto-generated>

src/cs/examples/helloworld/helloworld-app/Generated/Runtime.g.cs

@@ -1,5 +1,5 @@
 // <auto-generated>
-//  This code was generated by the following tool on 2025-01-03 12:59:48 GMT-05:00:
+//  This code was generated by the following tool on 2025-01-03 14:27:37 GMT-05:00:
 //      https://github.com/bottlenoselabs/c2cs (v0.0.0.0)
 //
 //  Changes to this file may cause incorrect behavior and will be lost if the code is regenerated.

src/cs/examples/helloworld/helloworld-app/Generated/my_c_library.g.cs

@@ -1,5 +1,5 @@
 // <auto-generated>
-//  This code was generated by the following tool on 2025-01-03 12:59:48 GMT-05:00:
+//  This code was generated by the following tool on 2025-01-03 14:27:37 GMT-05:00:
 //      https://github.com/bottlenoselabs/c2cs (v0.0.0.0)
 //
 //  Changes to this file may cause incorrect behavior and will be lost if the code is regenerated.
@@ -49,6 +49,8 @@ public static unsafe partial class my_c_library
     [UnmanagedCallConv(CallConvs = new[] { typeof(CallConvCdecl) })]
     public static partial void hw_pass_string(CString s);
 
+    public static readonly CString HW_STRING_POINTER = (CString)"Hello world using UTF-8 string literal from the C library's data segment!"u8;
+
     public enum hw_my_enum_week_day : int
     {
         HW_MY_ENUM_WEEK_DAY_UNKNOWN = 0,

src/cs/examples/helloworld/helloworld-app/Program.cs

@@ -18,6 +18,9 @@ private static unsafe void Main()
         //  Only available in C# 11 (.NET 7+). See https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/reference-types#utf-8-string-literals
         var cString1 = (CString)"Hello world from C# using UTF-8 string literal! No need to free this string!"u8;
         hw_pass_string(cString1);
+
+        // NOTE: This is particularly useful if you have C defines to strings which are stored in the data segment of the loaded C library.
+        hw_pass_string(HW_STRING_POINTER);
 #endif
 
         // NOTE: If you don't apply the `u8` it's a UTF-16 string which needs to be converted to UTF-8 and allocated.

src/cs/examples/helloworld/helloworld-bindgen/my_c_library/include/my_c_library.h

@@ -12,6 +12,8 @@
     #define MY_C_LIBRARY_API_DECL extern __attribute__ ((visibility("default")))
 #endif
 
+#define HW_STRING_POINTER "Hello world using UTF-8 string literal from the C library's data segment!"
+
 typedef enum hw_my_enum_week_day {
     HW_MY_ENUM_WEEK_DAY_UNKNOWN,
     HW_MY_ENUM_WEEK_DAY_MONDAY,

src/cs/production/c2cs.Tool/GenerateCSharpCode/Generators/GeneratorMacroObject.cs

@@ -15,9 +15,22 @@ protected override string GenerateCode(
         string nameCSharp, CodeGeneratorContext context, CMacroObject node)
     {
         var cSharpTypeName = context.NameMapper.GetTypeNameCSharp(node.Type);
-        var code = $"""
+
+        string code;
+#pragma warning disable IDE0045
+        if (cSharpTypeName == "CString" && node.Value.StartsWith('"') && node.Value.EndsWith('"'))
+#pragma warning restore IDE0045
+        {
+            code = $"""
+                    public static readonly {cSharpTypeName} {nameCSharp} = ({cSharpTypeName}){node.Value}u8;
+                    """;
+        }
+        else
+        {
+            code = $"""
                     public static readonly {cSharpTypeName} {nameCSharp} = ({cSharpTypeName}){node.Value};
                     """;
+        }
 
         return code;
     }