446 lines
14 KiB
C#
Executable File
446 lines
14 KiB
C#
Executable File
#region Copyright & License Information
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/*
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* Copyright 2007-2014 The OpenRA Developers (see AUTHORS)
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* This file is part of OpenRA, which is free software. It is made
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* available to you under the terms of the GNU General Public License
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* as published by the Free Software Foundation. For more information,
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* see COPYING.
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Globalization;
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using System.Linq;
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using System.Reflection;
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using System.Text.RegularExpressions;
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using OpenRA.Graphics;
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using OpenRA.Primitives;
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namespace OpenRA
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{
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public static class FieldLoader
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{
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public static Func<string, Type, string, object> InvalidValueAction = (s, t, f) =>
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{
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throw new InvalidOperationException("FieldLoader: Cannot parse `{0}` into `{1}.{2}` ".F(s, f, t));
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};
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public static Action<string, Type> UnknownFieldAction = (s, f) =>
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{
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throw new NotImplementedException("FieldLoader: Missing field `{0}` on `{1}`".F(s, f.Name));
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};
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public static void Load(object self, MiniYaml my)
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{
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var loadDict = typeLoadInfo[self.GetType()];
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foreach (var kv in loadDict)
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{
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object val;
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if (kv.Value != null)
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val = kv.Value(kv.Key.Name, kv.Key.FieldType, my);
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else if (!TryGetValueFromYaml(kv.Key, my, out val))
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continue;
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kv.Key.SetValue(self, val);
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}
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}
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static bool TryGetValueFromYaml(FieldInfo field, MiniYaml yaml, out object ret)
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{
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ret = null;
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var n = yaml.Nodes.Where(x => x.Key == field.Name).ToList();
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if (n.Count == 0)
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return false;
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if (n.Count == 1 && n[0].Value.Nodes.Count == 0)
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{
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ret = GetValue(field.Name, field.FieldType, n[0].Value.Value, field);
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return true;
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}
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else if (n.Count > 1)
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{
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throw new InvalidOperationException("The field {0} has multiple definitions:\n{1}"
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.F(field.Name, n.Select(m => "\t- " + m.Location).JoinWith("\n")));
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}
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throw new InvalidOperationException("TryGetValueFromYaml: unable to load field {0} (of type {1})".F(field.Name, field.FieldType));
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}
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public static T Load<T>(MiniYaml y) where T : new()
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{
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var t = new T();
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Load(t, y);
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return t;
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}
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static readonly object[] NoIndexes = { };
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public static void LoadField(object self, string key, string value)
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{
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var field = self.GetType().GetField(key.Trim());
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if (field != null)
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{
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if (!field.HasAttribute<FieldFromYamlKeyAttribute>())
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field.SetValue(self, GetValue(field.Name, field.FieldType, value, field));
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return;
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}
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var prop = self.GetType().GetProperty(key.Trim());
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if (prop != null)
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{
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if (!prop.HasAttribute<FieldFromYamlKeyAttribute>())
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prop.SetValue(self, GetValue(prop.Name, prop.PropertyType, value, prop), NoIndexes);
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return;
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}
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UnknownFieldAction(key.Trim(), self.GetType());
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}
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public static T GetValue<T>(string field, string value)
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{
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return (T)GetValue(field, typeof(T), value, null);
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}
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public static object GetValue(string fieldName, Type fieldType, string value)
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{
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return GetValue(fieldName, fieldType, value, null);
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}
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public static object GetValue(string fieldName, Type fieldType, string value, MemberInfo field)
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{
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if (value != null) value = value.Trim();
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if (fieldType == typeof(int))
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{
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int res;
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if (int.TryParse(value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out res))
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return res;
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(ushort))
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{
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ushort res;
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if (ushort.TryParse(value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out res))
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return res;
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return InvalidValueAction(value, fieldType, fieldName);
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}
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if (fieldType == typeof(long))
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{
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long res;
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if (long.TryParse(value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out res))
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return res;
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(float))
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{
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float res;
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if (float.TryParse(value.Replace("%", ""), NumberStyles.Float, NumberFormatInfo.InvariantInfo, out res))
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return res * (value.Contains('%') ? 0.01f : 1f);
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(decimal))
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{
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decimal res;
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if (decimal.TryParse(value.Replace("%", ""), NumberStyles.Float, NumberFormatInfo.InvariantInfo, out res))
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return res * (value.Contains('%') ? 0.01m : 1m);
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(string))
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{
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if (field != null && field.HasAttribute<TranslateAttribute>())
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return Regex.Replace(value, "@[^@]+@", m => Translate(m.Value.Substring(1, m.Value.Length - 2)), RegexOptions.Compiled);
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return value;
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}
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else if (fieldType == typeof(Color))
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{
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var parts = value.Split(',');
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if (parts.Length == 3)
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return Color.FromArgb(
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int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255),
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int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255),
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int.Parse(parts[2], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255));
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if (parts.Length == 4)
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return Color.FromArgb(
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int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255),
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int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255),
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int.Parse(parts[2], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255),
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int.Parse(parts[3], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255));
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(HSLColor))
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{
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var parts = value.Split(',');
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// Allow old ColorRamp format to be parsed as HSLColor
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if (parts.Length == 3 || parts.Length == 4)
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return new HSLColor(
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(byte)int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255),
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(byte)int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255),
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(byte)int.Parse(parts[2], NumberStyles.Integer, NumberFormatInfo.InvariantInfo).Clamp(0, 255));
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(Hotkey))
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{
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Hotkey res;
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if (Hotkey.TryParse(value, out res))
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return res;
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(WRange))
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{
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WRange res;
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if (WRange.TryParse(value, out res))
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return res;
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(WVec))
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{
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var parts = value.Split(',');
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if (parts.Length == 3)
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{
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WRange rx, ry, rz;
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if (WRange.TryParse(parts[0], out rx) && WRange.TryParse(parts[1], out ry) && WRange.TryParse(parts[2], out rz))
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return new WVec(rx, ry, rz);
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}
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(WPos))
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{
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var parts = value.Split(',');
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if (parts.Length == 3)
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{
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WRange rx, ry, rz;
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if (WRange.TryParse(parts[0], out rx) && WRange.TryParse(parts[1], out ry) && WRange.TryParse(parts[2], out rz))
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return new WPos(rx, ry, rz);
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}
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(WAngle))
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{
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int res;
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if (int.TryParse(value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out res))
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return new WAngle(res);
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(WRot))
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{
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var parts = value.Split(',');
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if (parts.Length == 3)
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{
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int rr, rp, ry;
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if (int.TryParse(value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out rr)
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&& int.TryParse(value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out rp)
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&& int.TryParse(value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out ry))
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return new WRot(new WAngle(rr), new WAngle(rp), new WAngle(ry));
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}
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return InvalidValueAction(value, fieldType, fieldName);
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}
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else if (fieldType == typeof(CPos))
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{
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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return new CPos(
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int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo),
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int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo));
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}
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else if (fieldType == typeof(CVec))
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{
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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return new CVec(
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int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo),
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int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo));
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}
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else if (fieldType.IsEnum)
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{
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try
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{
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return Enum.Parse(fieldType, value, true);
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}
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catch (ArgumentException)
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{
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return InvalidValueAction(value, fieldType, fieldName);
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}
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}
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else if (fieldType == typeof(bool))
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return ParseYesNo(value, fieldType, fieldName);
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else if (fieldType.IsArray)
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{
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if (value == null)
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return Array.CreateInstance(fieldType.GetElementType(), 0);
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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var ret = Array.CreateInstance(fieldType.GetElementType(), parts.Length);
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for (int i = 0; i < parts.Length; i++)
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ret.SetValue(GetValue(fieldName, fieldType.GetElementType(), parts[i].Trim(), field), i);
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return ret;
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}
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else if (fieldType == typeof(Size))
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{
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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return new Size(
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int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo),
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int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo));
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}
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else if (fieldType == typeof(int2))
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{
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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return new int2(
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int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo),
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int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo));
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}
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else if (fieldType == typeof(float2))
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{
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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float xx = 0;
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float yy = 0;
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float res;
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if (float.TryParse(parts[0].Replace("%", ""), NumberStyles.Float, NumberFormatInfo.InvariantInfo, out res))
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xx = res * (parts[0].Contains('%') ? 0.01f : 1f);
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if (float.TryParse(parts[1].Replace("%", ""), NumberStyles.Float, NumberFormatInfo.InvariantInfo, out res))
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yy = res * (parts[1].Contains('%') ? 0.01f : 1f);
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return new float2(xx, yy);
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}
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else if (fieldType == typeof(Rectangle))
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{
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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return new Rectangle(
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int.Parse(parts[0], NumberStyles.Integer, NumberFormatInfo.InvariantInfo),
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int.Parse(parts[1], NumberStyles.Integer, NumberFormatInfo.InvariantInfo),
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int.Parse(parts[2], NumberStyles.Integer, NumberFormatInfo.InvariantInfo),
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int.Parse(parts[3], NumberStyles.Integer, NumberFormatInfo.InvariantInfo));
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}
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else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Bits<>))
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{
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var parts = value.Split(new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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var argTypes = new Type[] { typeof(string[]) };
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var argValues = new object[] { parts };
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return fieldType.GetConstructor(argTypes).Invoke(argValues);
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}
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else if (fieldType.IsGenericType && fieldType.GetGenericTypeDefinition() == typeof(Nullable<>))
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{
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var innerType = fieldType.GetGenericArguments().First();
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var innerValue = GetValue("Nullable<T>", innerType, value, field);
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return fieldType.GetConstructor(new[] { innerType }).Invoke(new[] { innerValue });
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}
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UnknownFieldAction("[Type] {0}".F(value), fieldType);
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return null;
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}
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static object ParseYesNo(string p, Type fieldType, string field)
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{
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p = p.ToLowerInvariant();
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if (p == "yes") return true;
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if (p == "true") return true;
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if (p == "no") return false;
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if (p == "false") return false;
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return InvalidValueAction(p, fieldType, field);
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}
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static Cache<Type, Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>>> typeLoadInfo = new Cache<Type, Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>>>(GetTypeLoadInfo);
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static Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>> GetTypeLoadInfo(Type type)
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{
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var ret = new Dictionary<FieldInfo, Func<string, Type, MiniYaml, object>>();
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foreach (var ff in type.GetFields())
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{
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var field = ff;
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var ignore = field.GetCustomAttributes<IgnoreAttribute>(false);
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var loadUsing = field.GetCustomAttributes<LoadUsingAttribute>(false);
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var fromYamlKey = field.GetCustomAttributes<FieldFromYamlKeyAttribute>(false);
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if (loadUsing.Length != 0)
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ret[field] = (_1, fieldType, yaml) => loadUsing[0].LoaderFunc(field)(yaml);
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else if (fromYamlKey.Length != 0)
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ret[field] = (f, ft, yaml) => GetValue(f, ft, yaml.Value, field);
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else if (ignore.Length == 0)
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ret[field] = null;
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}
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return ret;
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}
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[AttributeUsage(AttributeTargets.Field)]
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public class IgnoreAttribute : Attribute { }
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[AttributeUsage(AttributeTargets.Field)]
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public class LoadUsingAttribute : Attribute
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{
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Func<MiniYaml, object> loaderFuncCache;
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public readonly string Loader;
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public LoadUsingAttribute(string loader)
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{
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Loader = loader;
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}
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internal Func<MiniYaml, object> LoaderFunc(FieldInfo field)
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{
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const BindingFlags BindingFlag = BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static;
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if (loaderFuncCache == null)
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loaderFuncCache = (Func<MiniYaml, object>)Delegate.CreateDelegate(typeof(Func<MiniYaml, object>), field.DeclaringType.GetMethod(Loader, BindingFlag));
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return loaderFuncCache;
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}
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}
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public static string Translate(string key)
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{
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if (Translations == null || string.IsNullOrEmpty(key))
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return key;
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string value;
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if (!Translations.TryGetValue(key, out value))
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return key;
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return value;
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}
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public static Dictionary<string, string> Translations = new Dictionary<string, string>();
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}
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[AttributeUsage(AttributeTargets.Field | AttributeTargets.Property)]
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public class TranslateAttribute : Attribute { }
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public class FieldFromYamlKeyAttribute : Attribute { }
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// mirrors DescriptionAttribute from System.ComponentModel but we dont want to have to use that everywhere.
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public class DescAttribute : Attribute
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{
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public readonly string[] Lines;
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public DescAttribute(params string[] lines) { Lines = lines; }
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}
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}
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