584 lines
22 KiB
C#
584 lines
22 KiB
C#
/*
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* Tencent is pleased to support the open source community by making xLua available.
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* Copyright (C) 2016 THL A29 Limited, a Tencent company. All rights reserved.
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* Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
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* http://opensource.org/licenses/MIT
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* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
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*/
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#if USE_UNI_LUA
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using LuaAPI = UniLua.Lua;
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using RealStatePtr = UniLua.ILuaState;
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using LuaCSFunction = UniLua.CSharpFunctionDelegate;
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#else
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using LuaAPI = XLua.LuaDLL.Lua;
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using RealStatePtr = System.IntPtr;
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using LuaCSFunction = XLua.LuaDLL.lua_CSFunction;
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#endif
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using System.Collections.Generic;
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using System;
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using System.Reflection;
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namespace XLua
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{
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public class OverloadMethodWrap
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{
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ObjectTranslator translator;
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Type targetType;
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MethodBase method;
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ObjectCheck[] checkArray;
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ObjectCast[] castArray;
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int[] inPosArray;
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int[] outPosArray;
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bool[] isOptionalArray;
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object[] defaultValueArray;
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bool isVoid = true;
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int luaStackPosStart = 1;
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bool targetNeeded = false;
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object[] args;
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int[] refPos;
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Type paramsType = null;
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public bool HasDefalutValue{ get; private set; }
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public OverloadMethodWrap(ObjectTranslator translator, Type targetType, MethodBase method)
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{
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this.translator = translator;
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this.targetType = targetType;
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this.method = method;
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HasDefalutValue = false;
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}
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public void Init(ObjectCheckers objCheckers, ObjectCasters objCasters)
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{
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if ((typeof(Delegate) != targetType && typeof(Delegate).IsAssignableFrom(targetType)) ||
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!method.IsStatic || method.IsConstructor)
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{
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luaStackPosStart = 2;
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if (!method.IsConstructor)
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{
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targetNeeded = true;
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}
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}
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var paramInfos = method.GetParameters();
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refPos = new int[paramInfos.Length];
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List<int> inPosList = new List<int>();
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List<int> outPosList = new List<int>();
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List<ObjectCheck> paramsChecks = new List<ObjectCheck>();
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List<ObjectCast> paramsCasts = new List<ObjectCast>();
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List<bool> isOptionalList = new List<bool>();
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List<object> defaultValueList = new List<object>();
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for(int i = 0; i < paramInfos.Length; i++)
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{
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refPos[i] = -1;
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if (!paramInfos[i].IsIn && paramInfos[i].IsOut) // out parameter
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{
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outPosList.Add(i);
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}
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else
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{
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if(paramInfos[i].ParameterType.IsByRef)
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{
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var ttype = paramInfos[i].ParameterType.GetElementType();
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if(CopyByValue.IsStruct(ttype) && ttype != typeof(decimal))
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{
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refPos[i] = inPosList.Count;
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}
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outPosList.Add(i);
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}
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inPosList.Add(i);
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var paramType = paramInfos[i].IsDefined(typeof(ParamArrayAttribute), false) || (!paramInfos[i].ParameterType.IsArray && paramInfos[i].ParameterType.IsByRef ) ?
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paramInfos[i].ParameterType.GetElementType() : paramInfos[i].ParameterType;
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paramsChecks.Add (objCheckers.GetChecker(paramType));
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paramsCasts.Add (objCasters.GetCaster(paramType));
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isOptionalList.Add(paramInfos[i].IsOptional);
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var defalutValue = paramInfos[i].DefaultValue;
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if (paramInfos[i].IsOptional)
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{
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if (defalutValue != null && defalutValue.GetType() != paramInfos[i].ParameterType)
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{
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defalutValue = defalutValue.GetType() == typeof(Missing) ? (paramInfos[i].ParameterType.IsValueType() ? Activator.CreateInstance(paramInfos[i].ParameterType) : Missing.Value)
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: Convert.ChangeType(defalutValue, paramInfos[i].ParameterType);
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}
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HasDefalutValue = true;
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}
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defaultValueList.Add(paramInfos[i].IsOptional ? defalutValue : null);
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}
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}
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checkArray = paramsChecks.ToArray();
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castArray = paramsCasts.ToArray();
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inPosArray = inPosList.ToArray();
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outPosArray = outPosList.ToArray();
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isOptionalArray = isOptionalList.ToArray();
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defaultValueArray = defaultValueList.ToArray();
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if (paramInfos.Length > 0 && paramInfos[paramInfos.Length - 1].IsDefined(typeof(ParamArrayAttribute), false))
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{
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paramsType = paramInfos[paramInfos.Length - 1].ParameterType.GetElementType();
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}
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args = new object[paramInfos.Length];
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if (method is MethodInfo) //constructor is not MethodInfo?
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{
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isVoid = (method as MethodInfo).ReturnType == typeof(void);
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}
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else if(method is ConstructorInfo)
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{
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isVoid = false;
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}
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}
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public bool Check(RealStatePtr L)
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{
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int luaTop = LuaAPI.lua_gettop(L);
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int luaStackPos = luaStackPosStart;
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for(int i = 0; i < checkArray.Length; i++)
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{
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if ((i == (checkArray.Length - 1)) && (paramsType != null))
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{
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break;
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}
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if(luaStackPos > luaTop && !isOptionalArray[i])
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{
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return false;
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}
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else if(luaStackPos <= luaTop && !checkArray[i](L, luaStackPos))
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{
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return false;
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}
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if (luaStackPos <= luaTop || !isOptionalArray[i])
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{
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luaStackPos++;
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}
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}
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return paramsType != null ? (luaStackPos < luaTop + 1 ?
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checkArray[checkArray.Length - 1](L, luaStackPos) : true) : luaStackPos == luaTop + 1;
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}
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public int Call(RealStatePtr L)
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{
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try
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{
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#if UNITY_EDITOR && !DISABLE_OBSOLETE_WARNING
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if (method.IsDefined(typeof(ObsoleteAttribute), true))
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{
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ObsoleteAttribute info = Attribute.GetCustomAttribute(method, typeof(ObsoleteAttribute)) as ObsoleteAttribute;
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UnityEngine.Debug.LogWarning("Obsolete Method [" + method.DeclaringType.ToString() + "." + method.Name + "]: " + info.Message);
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}
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#endif
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object target = null;
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MethodBase toInvoke = method;
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if (luaStackPosStart > 1)
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{
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target = translator.FastGetCSObj(L, 1);
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if (target is Delegate)
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{
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Delegate delegateInvoke = (Delegate)target;
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#if UNITY_WSA && !UNITY_EDITOR
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toInvoke = delegateInvoke.GetMethodInfo();
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#else
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toInvoke = delegateInvoke.Method;
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#endif
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}
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}
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int luaTop = LuaAPI.lua_gettop(L);
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int luaStackPos = luaStackPosStart;
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for (int i = 0; i < castArray.Length; i++)
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{
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//UnityEngine.Debug.Log("inPos:" + inPosArray[i]);
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if (luaStackPos > luaTop) //after check
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{
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if (paramsType != null && i == castArray.Length - 1)
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{
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args[inPosArray[i]] = Array.CreateInstance(paramsType, 0);
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}
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else
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{
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args[inPosArray[i]] = defaultValueArray[i];
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}
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}
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else
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{
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if (paramsType != null && i == castArray.Length - 1)
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{
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args[inPosArray[i]] = translator.GetParams(L, luaStackPos, paramsType);
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}
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else
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{
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args[inPosArray[i]] = castArray[i](L, luaStackPos, null);
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}
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luaStackPos++;
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}
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//UnityEngine.Debug.Log("value:" + args[inPosArray[i]]);
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}
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object ret = null;
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ret = toInvoke.IsConstructor ? ((ConstructorInfo)method).Invoke(args) : method.Invoke(targetNeeded ? target : null, args);
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if (targetNeeded && targetType.IsValueType())
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{
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translator.Update(L, 1, target);
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}
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int nRet = 0;
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if (!isVoid)
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{
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//UnityEngine.Debug.Log(toInvoke.ToString() + " ret:" + ret);
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translator.PushAny(L, ret);
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nRet++;
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}
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for (int i = 0; i < outPosArray.Length; i++)
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{
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if (refPos[outPosArray[i]] != -1)
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{
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translator.Update(L, luaStackPosStart + refPos[outPosArray[i]], args[outPosArray[i]]);
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}
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translator.PushAny(L, args[outPosArray[i]]);
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nRet++;
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}
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return nRet;
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}
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finally
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{
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for(int i = 0; i < args.Length; i++)
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{
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args[i] = null;
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}
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}
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}
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}
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public class MethodWrap
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{
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private string methodName;
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private List<OverloadMethodWrap> overloads = new List<OverloadMethodWrap>();
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private bool forceCheck;
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public MethodWrap(string methodName, List<OverloadMethodWrap> overloads, bool forceCheck)
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{
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this.methodName = methodName;
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this.overloads = overloads;
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this.forceCheck = forceCheck;
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}
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public int Call(RealStatePtr L)
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{
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try
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{
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if (overloads.Count == 1 && !overloads[0].HasDefalutValue && !forceCheck) return overloads[0].Call(L);
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for (int i = 0; i < overloads.Count; ++i)
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{
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var overload = overloads[i];
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if (overload.Check(L))
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{
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return overload.Call(L);
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}
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}
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return LuaAPI.luaL_error(L, "invalid arguments to " + methodName);
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}
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catch (System.Reflection.TargetInvocationException e)
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{
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return LuaAPI.luaL_error(L, "c# exception:" + e.InnerException.Message + ",stack:" + e.InnerException.StackTrace);
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}
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catch (System.Exception e)
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{
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return LuaAPI.luaL_error(L, "c# exception:" + e.Message + ",stack:" + e.StackTrace);
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}
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}
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}
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public class MethodWrapsCache
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{
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ObjectTranslator translator;
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ObjectCheckers objCheckers;
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ObjectCasters objCasters;
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Dictionary<Type, LuaCSFunction> constructorCache = new Dictionary<Type, LuaCSFunction>();
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Dictionary<Type, Dictionary<string, LuaCSFunction>> methodsCache = new Dictionary<Type, Dictionary<string, LuaCSFunction>>();
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Dictionary<Type, LuaCSFunction> delegateCache = new Dictionary<Type, LuaCSFunction>();
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public MethodWrapsCache(ObjectTranslator translator, ObjectCheckers objCheckers, ObjectCasters objCasters)
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{
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this.translator = translator;
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this.objCheckers = objCheckers;
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this.objCasters = objCasters;
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}
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public LuaCSFunction GetConstructorWrap(Type type)
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{
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//UnityEngine.Debug.LogWarning("GetConstructor:" + type);
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if (!constructorCache.ContainsKey(type))
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{
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var constructors = type.GetConstructors();
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if (type.IsAbstract() || constructors == null || constructors.Length == 0)
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{
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if (type.IsValueType())
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{
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constructorCache[type] = (L) =>
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{
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translator.PushAny(L, Activator.CreateInstance(type));
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return 1;
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};
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}
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else
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{
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return null;
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}
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}
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else
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{
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LuaCSFunction ctor = _GenMethodWrap(type, ".ctor", constructors, true).Call;
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if (type.IsValueType())
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{
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bool hasZeroParamsCtor = false;
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for (int i = 0; i < constructors.Length; i++)
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{
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if (constructors[i].GetParameters().Length == 0)
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{
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hasZeroParamsCtor = true;
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break;
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}
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}
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if (hasZeroParamsCtor)
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{
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constructorCache[type] = ctor;
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}
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else
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{
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constructorCache[type] = (L) =>
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{
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if (LuaAPI.lua_gettop(L) == 1)
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{
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translator.PushAny(L, Activator.CreateInstance(type));
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return 1;
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}
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else
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{
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return ctor(L);
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}
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};
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}
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}
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else
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{
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constructorCache[type] = ctor;
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}
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}
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}
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return constructorCache[type];
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}
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public LuaCSFunction GetMethodWrap(Type type, string methodName)
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{
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//UnityEngine.Debug.LogWarning("GetMethodWrap:" + type + " " + methodName);
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if (!methodsCache.ContainsKey(type))
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{
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methodsCache[type] = new Dictionary<string, LuaCSFunction>();
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}
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var methodsOfType = methodsCache[type];
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if (!methodsOfType.ContainsKey(methodName))
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{
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MemberInfo[] methods = type.GetMember(methodName, BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.IgnoreCase);
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if (methods == null || methods.Length == 0 ||
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#if UNITY_WSA && !UNITY_EDITOR
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methods[0] is MethodBase
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#else
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methods[0].MemberType != MemberTypes.Method
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#endif
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)
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{
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return null;
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}
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methodsOfType[methodName] = _GenMethodWrap(type, methodName, methods).Call;
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}
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return methodsOfType[methodName];
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}
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public LuaCSFunction GetMethodWrapInCache(Type type, string methodName)
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{
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//string retriKey = type.ToString() + "." + methodName;
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//return methodsCache.ContainsKey(retriKey) ? methodsCache[retriKey] : null;
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if (!methodsCache.ContainsKey(type))
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{
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methodsCache[type] = new Dictionary<string, LuaCSFunction>();
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}
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var methodsOfType = methodsCache[type];
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return methodsOfType.ContainsKey(methodName) ? methodsOfType[methodName] : null;
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}
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public LuaCSFunction GetDelegateWrap(Type type)
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{
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//UnityEngine.Debug.LogWarning("GetDelegateWrap:" + type );
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if (!typeof(Delegate).IsAssignableFrom(type))
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{
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return null;
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}
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if (!delegateCache.ContainsKey(type))
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{
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delegateCache[type] = _GenMethodWrap(type, type.ToString(), new MethodBase[] { type.GetMethod("Invoke") }).Call;
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}
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return delegateCache[type];
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}
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public LuaCSFunction GetEventWrap(Type type, string eventName)
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{
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if (!methodsCache.ContainsKey(type))
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{
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methodsCache[type] = new Dictionary<string, LuaCSFunction>();
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}
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var methodsOfType = methodsCache[type];
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if (!methodsOfType.ContainsKey(eventName))
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{
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{
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EventInfo eventInfo = type.GetEvent(eventName, BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly | BindingFlags.Static | BindingFlags.NonPublic);
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if (eventInfo == null)
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{
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throw new Exception(type.Name + " has no event named: " + eventName);
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}
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int start_idx = 0;
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MethodInfo add = eventInfo.GetAddMethod(true);
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MethodInfo remove = eventInfo.GetRemoveMethod(true);
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if (add == null && remove == null)
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{
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throw new Exception(type.Name + "'s " + eventName + " has either add nor remove");
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}
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bool is_static = add != null ? add.IsStatic : remove.IsStatic;
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if (!is_static) start_idx = 1;
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methodsOfType[eventName] = (L) =>
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{
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object obj = null;
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if (!is_static)
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{
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obj = translator.GetObject(L, 1, type);
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if (obj == null)
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{
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return LuaAPI.luaL_error(L, "invalid #1, needed:" + type);
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}
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}
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try
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{
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object handlerDelegate = translator.CreateDelegateBridge(L, eventInfo.EventHandlerType, start_idx + 2);
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if (handlerDelegate == null)
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{
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return LuaAPI.luaL_error(L, "invalid #" + (start_idx + 2) + ", needed:" + eventInfo.EventHandlerType);
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}
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switch (LuaAPI.lua_tostring(L, start_idx + 1))
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{
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case "+":
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if (add == null)
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{
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return LuaAPI.luaL_error(L, "no add for event " + eventName);
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}
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add.Invoke(obj, new object[] { handlerDelegate });
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break;
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case "-":
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if (remove == null)
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{
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return LuaAPI.luaL_error(L, "no remove for event " + eventName);
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}
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remove.Invoke(obj, new object[] { handlerDelegate });
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break;
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default:
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return LuaAPI.luaL_error(L, "invalid #" + (start_idx + 1) + ", needed: '+' or '-'" + eventInfo.EventHandlerType);
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}
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}
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catch (System.Exception e)
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{
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return LuaAPI.luaL_error(L, "c# exception:" + e + ",stack:" + e.StackTrace);
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}
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return 0;
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};
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}
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}
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return methodsOfType[eventName];
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}
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public MethodWrap _GenMethodWrap(Type type, string methodName, IEnumerable<MemberInfo> methodBases, bool forceCheck = false)
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{
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List<OverloadMethodWrap> overloads = new List<OverloadMethodWrap>();
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foreach(var methodBase in methodBases)
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{
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var mb = methodBase as MethodBase;
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if (mb == null)
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continue;
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if (mb.IsGenericMethodDefinition
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#if !ENABLE_IL2CPP
|
|
&& !tryMakeGenericMethod(ref mb)
|
|
#endif
|
|
)
|
|
continue;
|
|
|
|
var overload = new OverloadMethodWrap(translator, type, mb);
|
|
overload.Init(objCheckers, objCasters);
|
|
overloads.Add(overload);
|
|
}
|
|
return new MethodWrap(methodName, overloads, forceCheck);
|
|
}
|
|
|
|
private static bool tryMakeGenericMethod(ref MethodBase method)
|
|
{
|
|
try
|
|
{
|
|
if (!(method is MethodInfo) || !Utils.IsSupportedMethod(method as MethodInfo) )
|
|
{
|
|
return false;
|
|
}
|
|
var genericArguments = method.GetGenericArguments();
|
|
var constraintedArgumentTypes = new Type[genericArguments.Length];
|
|
for (var i = 0; i < genericArguments.Length; i++)
|
|
{
|
|
var argumentType = genericArguments[i];
|
|
var parameterConstraints = argumentType.GetGenericParameterConstraints();
|
|
constraintedArgumentTypes[i] = parameterConstraints[0];
|
|
}
|
|
method = ((MethodInfo)method).MakeGenericMethod(constraintedArgumentTypes);
|
|
return true;
|
|
}
|
|
catch (Exception)
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|