350 lines
12 KiB
C#
350 lines
12 KiB
C#
using System;
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using System.CodeDom.Compiler;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using System.Reflection;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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using BITKit.Mod;
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using Microsoft.CodeAnalysis.CSharp.Scripting;
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using Microsoft.CodeAnalysis.Scripting;
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#if UNITY_5_3_OR_NEWER
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using System.Collections;
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using UnityEngine;
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#endif
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namespace BITKit
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{
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public static class BITSharp
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{
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public static ICodeGenerator SharedCodeGenerator = new CodeGenerator();
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public interface ICodeGenerator
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{
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public string Generate(Type type,string className=null);
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IReadOnlyList<string> GenerateNamespaces(Type type);
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string BeforeGenerate(Type type);
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string AfterGenerate(Type type);
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string GenerateMethod(MethodInfo methodInfo);
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string GenerateMethodContext(MethodInfo methodInfo);
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string GenerateField(FieldInfo fieldInfo);
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string GenerateProperty(PropertyInfo propertyInfo);
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string GenerateEvent(EventInfo eventInfo);
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}
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public class CodeGenerator:ICodeGenerator
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{
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public virtual string Generate(Type type, string className = null)
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{
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if (type.IsInterface is false) throw new InvalidDataException("The type have to be interface");
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var codeBuilder = new StringBuilder();
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var nameSpaces = new HashSet<string>();
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foreach (var propertyInfo in type.GetProperties())
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{
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nameSpaces.Add(propertyInfo.PropertyType.Namespace);
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}
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foreach (var fieldInfo in type.GetFields())
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{
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nameSpaces.Add(fieldInfo.FieldType.Namespace);
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}
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foreach (var method in type.GetMethods())
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{
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if (method.DeclaringType is not null)
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{
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nameSpaces.Add(method.DeclaringType.Namespace);
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}
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nameSpaces.Add(method.ReturnType.Namespace);
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foreach (var argument in method.GetGenericArguments())
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{
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nameSpaces.Add(argument.Namespace);
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}
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foreach (var parameterInfo in method.GetParameters())
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{
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nameSpaces.Add(parameterInfo.ParameterType.Namespace);
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}
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}
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nameSpaces.Add("System");
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nameSpaces.Add("System.Collections.Concurrent");
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nameSpaces.Add("System.Collections.Generic");
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nameSpaces.Add(type.Namespace);
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foreach (var name in GenerateNamespaces(type))
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{
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nameSpaces.Add(name);
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}
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codeBuilder.AppendLine(string.Join('\n', nameSpaces.Where(x=>string.IsNullOrEmpty(x) is false).Select(x=>$"using {x};")));
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//codeBuilder.AppendLine("namespace BITSharpGen");
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//codeBuilder.AppendLine("{");
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codeBuilder.AppendLine($"public class @{type.Name}Gen : {type.Name}");
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codeBuilder.AppendLine("{");
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codeBuilder.AppendLine(BeforeGenerate(type));
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foreach (var fieldInfo in type.GetFields())
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{
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codeBuilder.AppendLine(GenerateField(fieldInfo));
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}
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foreach (var propertyInfo in type.GetProperties())
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{
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codeBuilder.AppendLine(GenerateProperty(propertyInfo));
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}
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// 遍历接口的所有成员，生成方法的默认实现
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foreach (var method in type.GetMethods())
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{
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codeBuilder.AppendLine(GenerateMethod(method));
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}
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foreach (var eventInfo in type.GetEvents())
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{
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codeBuilder.AppendLine(GenerateEvent(eventInfo));
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}
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codeBuilder.AppendLine(AfterGenerate(type));
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codeBuilder.AppendLine("}");
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return codeBuilder.ToString();
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}
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public virtual IReadOnlyList<string> GenerateNamespaces(Type type)
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{
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return ArraySegment<string>.Empty;
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}
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public virtual string BeforeGenerate(Type type)
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{
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return string.Empty;
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}
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public virtual string AfterGenerate(Type type)
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{
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return string.Empty;
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}
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public virtual string GenerateMethod(MethodInfo methodInfo)
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{
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var codeBuilder = new StringBuilder();
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HashSet<MethodInfo> ignoreMethods = new();
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foreach (var eventInfo in methodInfo.DeclaringType!.GetEvents())
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{
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ignoreMethods.Add(eventInfo.AddMethod);
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ignoreMethods.Add(eventInfo.RemoveMethod);
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}
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foreach (var propertyInfo in methodInfo.DeclaringType!.GetProperties())
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{
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if (propertyInfo.GetMethod is not null)
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{
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ignoreMethods.Add(propertyInfo.GetMethod);
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}
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if (propertyInfo.SetMethod is not null)
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{
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ignoreMethods.Add(propertyInfo.SetMethod);
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}
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}
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if(ignoreMethods.Contains(methodInfo))return string.Empty;
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string methodName = methodInfo.Name;
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string parameters = string.Join(", ", methodInfo.GetParameters()
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.Select(p => $"{(p.IsOut?"out":string.Empty)} {CSharpName(p.IsOut?p.ParameterType.GetElementType():p.ParameterType)} {p.Name}"));
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var isAwaitable = methodInfo.ReturnType.GetMethod(nameof(Task.GetAwaiter)) != null;
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// 检查是否为泛型方法
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if (methodInfo.IsGenericMethod)
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{
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// 处理泛型方法
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var genericArgs = string.Join(", ", methodInfo.GetGenericArguments()
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.Select(CSharpName));
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if (methodInfo.ReturnType == typeof(void))
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{
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codeBuilder.AppendLine($" public void {methodName}<{genericArgs}>({parameters}) {{ \n{GenerateMethodContext(methodInfo)}\n }}");
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}
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else
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{
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codeBuilder.AppendLine($" public {(isAwaitable?"async":string.Empty)} {CSharpName(methodInfo.ReturnType)} {methodName}<{genericArgs}>({parameters}) {{ {GenerateMethodContext(methodInfo)} }}");
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}
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}
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else
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{
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if (methodInfo.ReturnType == typeof(void))
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{
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codeBuilder.AppendLine($" public void {methodName}({parameters}) {{ {GenerateMethodContext(methodInfo)}}}"); // Void 方法默认空实现
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}
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else
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{
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// 返回默认值
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codeBuilder.AppendLine($" public {(isAwaitable?"async":string.Empty)} {CSharpName(methodInfo.ReturnType)} {methodName}({parameters}) {{ {GenerateMethodContext(methodInfo)} }}");
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}
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}
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return codeBuilder.ToString();
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}
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public virtual string GenerateMethodContext(MethodInfo methodInfo)
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{
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var codeBuilder = new StringBuilder();
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foreach (var parameterInfo in methodInfo.GetParameters())
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{
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if (parameterInfo.IsOut)
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{
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codeBuilder.AppendLine($"{parameterInfo.Name} = default;");
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}
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}
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codeBuilder.AppendLine(methodInfo.ReturnType == typeof(void) ? string.Empty : $"return default;");
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return codeBuilder.ToString();
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}
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public virtual string GenerateField(FieldInfo fieldInfo)
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{
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return $"public {CSharpName(fieldInfo.FieldType)} {fieldInfo.Name};";
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}
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public virtual string GenerateProperty(PropertyInfo propertyInfo)
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{
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return $"public {CSharpName(propertyInfo.PropertyType)} {propertyInfo.Name}" + "{ get;set; }";
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}
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public virtual string GenerateEvent(EventInfo eventInfo)
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{
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return $"public event {CSharpName(eventInfo.EventHandlerType)} {eventInfo.Name};";
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}
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}
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#if UNITY_5_3_OR_NEWER
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[RuntimeInitializeOnLoadMethod]
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private static void Reload()
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{
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ReferencedAssemblies.Clear();
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Dictionary.Clear();
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assemblies = null;
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}
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#endif
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public static readonly List<string> ReferencedAssemblies = new();
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private static readonly ConcurrentDictionary<string, Type> Dictionary = new();
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private static Assembly[] assemblies;
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public static bool TryGetTypeFromFullName(string fullClassName, out Type type)
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{
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type = GetTypeFromFullName(fullClassName);
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return type is not null ? true : false;
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}
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public static Type GetTypeFromFullName(string fullClassName)
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{
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return Dictionary.GetOrAdd(fullClassName, SearchType);
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}
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private static Type SearchType(string fullName)
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{
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if (string.IsNullOrWhiteSpace(fullName))
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{
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throw new ArgumentException("fullName is null or empty", nameof(fullName));
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}
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assemblies ??= AppDomain.CurrentDomain.GetAssemblies();
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return assemblies.Select(assembly => assembly.GetType(fullName, false)).FirstOrDefault(type => type is not null);
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}
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public static IReadOnlyCollection<Assembly> GetReferencedAssemblies(Type type)
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{
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var result = new HashSet<Assembly>();
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result.Add(type.Assembly);
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foreach (var fieldInfo in type.GetFields())
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{
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result.Add(fieldInfo.FieldType.Assembly);
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}
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foreach (var propertyInfo in type.GetProperties())
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{
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result.Add(propertyInfo.PropertyType.Assembly);
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}
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foreach (var methodInfo in type.GetMethods())
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{
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result.Add(methodInfo.ReturnType.Assembly);
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foreach (var argument in methodInfo.GetGenericArguments())
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{
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result.Add(argument.Assembly);
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}
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foreach (var parameterInfo in methodInfo.GetParameters())
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{
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result.Add(parameterInfo.ParameterType.Assembly);
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}
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}
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return result;
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}
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public static string CSharpName(this Type type)
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{
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var sb = new StringBuilder();
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var name = type.Name;
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if (!type.IsGenericType) return name;
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sb.Append(name.Substring(0, name.IndexOf('`')));
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sb.Append("<");
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sb.Append(string.Join(", ", type.GetGenericArguments()
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.Select(t => CSharpName(t))));
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sb.Append(">");
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return sb.ToString();
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}
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public static Assembly Compile(string code, ScriptOptions scriptOptions = null)
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{
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scriptOptions ??= ScriptOptions.Default;
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var script = CSharpScript.Create(code, scriptOptions);
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script.Compile();
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using var ms = new MemoryStream();
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var result = script.GetCompilation().Emit(ms);
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if (!result.Success)
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{
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var report = new StringBuilder();
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report.AppendLine(code);
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foreach (var reference in script.GetCompilation().References)
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{
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report.AppendLine("Assembly referenced:" + reference.Display);
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}
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foreach (var diagnostic in result.Diagnostics)
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{
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report.AppendLine(diagnostic.ToString());
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}
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throw new Exception(report.ToString());
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}
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ms.Seek(0, SeekOrigin.Begin);
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var assembly = Assembly.Load(ms.ToArray()); // 加载程序集
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return assembly;
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}
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}
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} |