From 5fa89f6df20dbb6d4ffd1833a43042faa25b3d38 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fa=E9=B8=BD?= <1207247008@qq.com>
Date: Mon, 1 Mar 2021 18:46:34 +0800
Subject: [PATCH] metadata

---
 UniGal.Compiler.Frontend/Response/rtenv.cs    |  1 -
 UniGal.Compiler.Frontend/Response/toplevel.cs | 58 ++++++++++++++++++-
 UniGal.Compiler.IR/BasicElement.cs            |  2 +-
 3 files changed, 57 insertions(+), 4 deletions(-)

diff --git a/UniGal.Compiler.Frontend/Response/rtenv.cs b/UniGal.Compiler.Frontend/Response/rtenv.cs
index 4ed5fd5..ea7de4c 100644
--- a/UniGal.Compiler.Frontend/Response/rtenv.cs
+++ b/UniGal.Compiler.Frontend/Response/rtenv.cs
@@ -47,7 +47,6 @@ internal static EnvironmentInfo.Display on_display(XmlReader r, List<CompilerErr
 				uint w = 1920;
 				uint h = 1080;
 				bool fullscr = true;
-
 				while (r.Read())
 				{
 					if(r.NodeType == XmlNodeType.Element)
diff --git a/UniGal.Compiler.Frontend/Response/toplevel.cs b/UniGal.Compiler.Frontend/Response/toplevel.cs
index 0e5cd45..bef4b33 100644
--- a/UniGal.Compiler.Frontend/Response/toplevel.cs
+++ b/UniGal.Compiler.Frontend/Response/toplevel.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Globalization;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -22,8 +23,61 @@ internal static string on_comment(XmlReader r)
 		internal static Metadata on_metadata(XmlReader r, List<CompilerError> errors)
 		{
 			Metadata ret = new();
-
-			// r.
+			while (r.Read())
+			{
+				if(r.NodeType == XmlNodeType.Element)
+				{
+					while (r.Read() && r.NodeType != XmlNodeType.EndElement)
+					{
+						if (r.NodeType == XmlNodeType.Element)
+						{
+							try
+							{
+								switch (r.Name)
+								{
+									case "src":
+										ret.Source = r.Value;
+										break;
+									case "dst":
+										ret.Target = r.Value;
+										break;
+									case "src_engine":
+										ret.SourceEngine = r.Value;
+										break;
+									case "dst_engine":
+										ret.TargetEngine = r.Value;
+										break;
+									case "src_characterset":
+										ret.SourceEncoding = Encoding.GetEncoding(r.Value);
+										break;
+									case "dst_characterset":
+										ret.TargetEncoding = Encoding.GetEncoding(r.Value);
+										break;
+									case "src_language":
+										ret.SourceCulture = CultureInfo.GetCultureInfo(r.Value);
+										break;
+									case "dst_language":
+										ret.SourceCulture = CultureInfo.GetCultureInfo(r.Value);
+										break;
+									case "comment":
+										ret.Comment = on_comment(r);
+										break;
+									default:
+										break;
+								}
+							}
+							catch (CultureNotFoundException e)
+							{
+								errors.Add(new parser_error(9002, ErrorServiety.Warning, new string[] { e.Message, e.InvalidCultureName! }, "出现脚本编译器不支持的语言"));
+							}
+							catch (ArgumentException e)
+							{
+								errors.Add(new parser_error(9002, ErrorServiety.Warning, new string[] { e.Message, e.ParamName! }, "出现脚本编译器不支持的编码"));
+							}
+						}
+					}
+				}
+			}
 			return ret;
 		}
 
diff --git a/UniGal.Compiler.IR/BasicElement.cs b/UniGal.Compiler.IR/BasicElement.cs
index 2169a37..57fa3e5 100644
--- a/UniGal.Compiler.IR/BasicElement.cs
+++ b/UniGal.Compiler.IR/BasicElement.cs
@@ -8,7 +8,7 @@ namespace UniGal.Compiler.IR
 	public class BasicElement
 	{
 		/// <summary>直观编辑器所使用的注释</summary>
-		public StringView Comment = new StringView();
+		public string Comment = "";
 		/// <summary>
 		/// 原始表示
 		/// </summary>