c abi stuff

Author: mf366-dev

RSML.Native/MetadataExports.cs

@@ -11,19 +11,12 @@ namespace OceanApocalypseStudios.RSML.Native
 	public static unsafe class MetadataExports
 	{
 
+		private const string ApiVersion = "2.0.0";
 		private const byte ApiAuthorNameLen = 16;
 
-		private static readonly byte[] authorName =
-		[
-			0x4F, 0x63, 0x65, 0x61, 0x6E, 0x41,
-			0x70, 0x6F, 0x63, 0x61, 0x6C, 0x79,
-			0x70, 0x73, 0x65, 0x53, 0x74, 0x75,
-			0x64, 0x69, 0x6F, 0x73
-		]; // OceanApocalypseStudios
-
-		private static readonly byte[] docsLink = Encoding.UTF8.GetBytes($"https://oceanapocalypsestudios.org/rsml-docs/{"change me"}/"); // todo
-
-		private static readonly byte[] utf8ApiVersion = Encoding.UTF8.GetBytes("change me"); // todo
+		private static readonly byte[] authorName = "OceanApocalypseStudios"u8.ToArray();
+		private static readonly byte[] docsLink = Encoding.UTF8.GetBytes($"https://oceanapocalypsestudios.org/rsml-docs/{ApiVersion}/");
+		private static readonly byte[] utf8ApiVersion = Encoding.UTF8.GetBytes(ApiVersion);
 
 		/// <summary>
 		/// Writes the name of the creator (and lead maintainer) of RSML's API to a supplied buffer.

RSML.Native/ParserExports.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Runtime.InteropServices;
+using System.Text;
+
+using OceanApocalypseStudios.RSML.Evaluation;
+
+
+namespace OceanApocalypseStudios.RSML.Native
+{
+
+	/// <summary>
+	/// C ABI exports for RSML toolchain components.
+	/// </summary>
+	public static unsafe class ToolchainExports
+	{
+
+		/// <summary>
+		/// Evaluates a RSML document from the local machine.
+		/// </summary>
+		/// <param name="document">The document to evaluate</param>
+		/// <param name="documentLength">The length of the document</param>
+		/// <param name="resultBuffer">The buffer in which to store the evaluation result</param>
+		/// <param name="resultBufferLength">The length of the result buffer</param>
+		/// <returns>
+		/// <c>-1:</c> An error occured while evaluating the document OR the result buffer is too small to hold the result<br />
+		/// <c>0:</c> No matches were found (result buffer unassigned)<br />
+		/// <c>1:</c> A match was found (result buffer assigned)<br />
+		/// </returns>
+		[UnmanagedCallersOnly(EntryPoint = "rsml_evaluate_document")]
+		public static int EvaluateRsmlDocument(byte* document, int documentLength, byte* resultBuffer, int resultBufferLength)
+		{
+
+			ReadOnlySpan<byte> span = new(document, documentLength);
+			Evaluator evaluator = new(span);
+			EvaluationResult result;
+
+			try
+			{
+				result = evaluator.Evaluate();
+			}
+			catch (Exception)
+			{
+				return -1;
+			}
+
+			if (!result.WasMatchFound)
+				return 0;
+
+			if (resultBufferLength > result.MatchValue!.Length)
+				return -1;
+
+			var asBytes = Encoding.UTF8.GetBytes(result.MatchValue!);
+
+			for (int i = 0; i < asBytes.Length; i++)
+				resultBuffer[i] = asBytes[i];
+
+			return 1;
+
+		}
+
+	}
+
+}