mirror of
https://github.com/danbulant/Cosmos
synced 2026-05-19 20:39:01 +00:00
745 lines
No EOL
37 KiB
C#
745 lines
No EOL
37 KiB
C#
using System;
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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 Cosmos.IL2CPU;
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using Cosmos.IL2CPU.Plugs;
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using Cosmos.IL2CPU.IL;
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using SR = System.Reflection;
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using Cosmos.Assembler;
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using System.Reflection.Emit;
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using _MemberInfo = System.Runtime.InteropServices._MemberInfo;
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namespace Cosmos.IL2CPU
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{
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public class PlugManager
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{
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public bool ThrowExceptions = true;
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public LogExceptionDelegate LogException = null;
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public delegate void ScanMethodDelegate(MethodBase aMethod, bool aIsPlug, string sourceItem);
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public ScanMethodDelegate ScanMethod = null;
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public delegate void QueueDelegate(_MemberInfo aItem, object aSrc, string aSrcType, string sourceItem = null);
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public QueueDelegate Queue = null;
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// Contains a list of plug implementor classes
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// Key = Target Class
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// Value = List of Implementors. There may be more than one
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protected Dictionary<Type, List<Type>> mPlugImpls = new Dictionary<Type, List<Type>>();
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// List of inheritable plugs. Plugs that start at an ancestor and plug all
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// descendants. For example, delegates
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protected Dictionary<Type, List<Type>> mPlugImplsInhrt = new Dictionary<Type, List<Type>>();
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// list of field plugs
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protected IDictionary<Type, IDictionary<string, PlugFieldAttribute>> mPlugFields = new Dictionary<Type, IDictionary<string, PlugFieldAttribute>>();
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public Dictionary<Type, List<Type>> PlugImpls
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{
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get
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{
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return mPlugImpls;
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}
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}
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public Dictionary<Type, List<Type>> PlugImplsInhrt
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{
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get
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{
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return mPlugImplsInhrt;
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}
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}
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public IDictionary<Type, IDictionary<string, PlugFieldAttribute>> PlugFields
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{
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get
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{
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return mPlugFields;
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}
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}
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private Orvid.Collections.SkipList ResolvedPlugs = new Orvid.Collections.SkipList();
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private static string BuildMethodKeyName(MethodBase m)
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{
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return LabelName.GenerateFullName(m);
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}
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public PlugManager(LogExceptionDelegate aLogException)
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{
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LogException = aLogException;
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}
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public PlugManager(LogExceptionDelegate aLogException, ScanMethodDelegate aScanMethod, QueueDelegate aQueueMethod)
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{
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LogException = aLogException;
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ScanMethod = aScanMethod;
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Queue = aQueueMethod;
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}
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public void FindPlugImpls()
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{
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// TODO: Cache method list with info - so we dont have to keep
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// scanning attributes for enabled etc repeatedly
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// TODO: New plug system, common plug base which all descend from
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// It can have a "this" member and then we
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// can separate static from instance by the static keyword
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// and ctors can be static "ctor" by name
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// Will still need plug attrib though to specify target
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// Also need to handle asm plugs, but those will be different anyways
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// TODO: Allow whole class plugs? ie, a class that completely replaces another class
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// and is substituted on the fly? Plug scanner would direct all access to that
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// class and throw an exception if any method, field, member etc is missing.
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foreach (var xAsm in AppDomain.CurrentDomain.GetAssemblies())
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{
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if (!xAsm.GlobalAssemblyCache)
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{
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//if (xAsm.GetName().Name == "Cosmos.IL2CPU.X86") {
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// // skip this assembly for now. at the moment we introduced the AssemblerMethod.AssembleNew method, for allowing those to work
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// // with the Cosmos.IL2CPU* stack, we found we could not use the Cosmos.IL2CPU.X86 plugs, as they contained some AssemblerMethods.
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// // This would result in a circular reference, thus we copied them to a new assembly. While the Cosmos.IL2CPU.X86 assembly is being
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// // referenced, we need to skip it here.
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// continue;
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//}
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// Find all classes marked as a Plug
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foreach (var xPlugType in xAsm.GetTypes())
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{
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// Foreach, it is possible there could be one plug class with mult plug targets
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foreach (PlugAttribute xAttrib in xPlugType.GetCustomAttributes(typeof(PlugAttribute), false))
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{
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var xTargetType = xAttrib.Target;
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// If no type is specified, try to find by a specified name.
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// This is needed in cross assembly references where the
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// plug cannot reference the assembly of the target type
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if (xTargetType == null)
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{
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try
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{
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xTargetType = Type.GetType(xAttrib.TargetName, true, false);
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}
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catch (Exception ex)
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{
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throw new Exception("Error", ex);
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}
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}
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// Only keep this plug if its for MS.NET.
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// TODO: Integrate with builder options to allow Mono support again.
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if (!xAttrib.IsMonoOnly)
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{
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var mPlugs = xAttrib.Inheritable ? mPlugImplsInhrt : mPlugImpls;
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List<Type> xImpls;
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if (mPlugs.TryGetValue(xTargetType, out xImpls))
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{
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xImpls.Add(xPlugType);
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}
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else
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{
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xImpls = new List<Type>();
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xImpls.Add(xPlugType);
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mPlugs.Add(xTargetType, xImpls);
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}
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}
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}
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}
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}
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}
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}
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public void ScanFoundPlugs()
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{
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ScanPlugs(mPlugImpls);
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ScanPlugs(mPlugImplsInhrt);
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}
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public void ScanPlugs(Dictionary<Type, List<Type>> aPlugs)
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{
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foreach (var xPlug in aPlugs)
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{
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var xImpls = xPlug.Value;
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foreach (var xImpl in xImpls)
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{
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#region PlugMethods scan
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foreach (var xMethod in xImpl.GetMethods(BindingFlags.Public | BindingFlags.Static))
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{
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PlugMethodAttribute xAttrib = null;
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foreach (PlugMethodAttribute x in xMethod.GetCustomAttributes(typeof(PlugMethodAttribute), false))
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{
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xAttrib = x;
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}
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if (xAttrib == null)
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{
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//At this point we need to check the plug method actually
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//matches a method that might need plugging.
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// x08 bug
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// We must check for a number of cases:
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// - Public, static and private/internal methods that need plugging
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// - Ctor or Cctor
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bool OK = false;
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if (xMethod.Name.ToLower() == "ctor" ||
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xMethod.Name.ToLower() == "cctor")
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{
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OK = true;
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}
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else
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{
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//Skip checking methods related to fields because it's just too messy...
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if (xMethod.GetParameters().Where(delegate(ParameterInfo x)
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{
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return x.GetCustomAttributes(typeof(FieldAccessAttribute)).Count() > 0;
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}).Count() > 0)
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{
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OK = true;
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}
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else
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{
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var xParamTypes = xMethod.GetParameters().Select(delegate(ParameterInfo x)
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{
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var result = x.ParameterType;
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if (result.IsByRef)
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{
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result = result.GetElementType();
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}
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else if (result.IsPointer)
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{
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result = null;
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}
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return result;
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}).ToArray();
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var posMethods = xPlug.Key.GetMethods(BindingFlags.Instance | BindingFlags.Static |
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BindingFlags.NonPublic | BindingFlags.Public)
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.Where(x => x.Name == xMethod.Name);
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foreach (System.Reflection.MethodInfo posInf in posMethods)
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{
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// If static, no this param
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// Otherwise, take into account first param is this param
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//This param is either of declaring type, or ref to declaring type or pointer
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var posMethParamTypes = posInf.GetParameters().Select(delegate(ParameterInfo x)
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{
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var result = x.ParameterType;
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if (result.IsByRef)
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{
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result = result.GetElementType();
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}
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else if (result.IsPointer)
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{
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result = null;
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}
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return result;
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}).ToArray();
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if (posInf.IsStatic)
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{
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if (posMethParamTypes.Length != xParamTypes.Length)
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{
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continue;
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}
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OK = true;
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// Exact params match excl. pointers - there could be "null" types for statics since some could be pointers
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for (int i = 0; i < posMethParamTypes.Length; i++)
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{
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if ((posMethParamTypes[i] == null && xParamTypes[i] == null) || !posMethParamTypes[i].Equals(xParamTypes[i]))
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{
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OK = false;
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break;
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}
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}
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if (!OK)
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{
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continue;
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}
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else
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{
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break;
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}
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}
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else
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{
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// Exact match except possibly 1st param
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if (posMethParamTypes.Length != xParamTypes.Length &&
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posMethParamTypes.Length != xParamTypes.Length - 1)
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{
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continue;
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}
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int offset = 0;
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OK = true;
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// Exact match except if first param doesn't match, we skip 1st param and restart matching
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for (int i = 0; i < posMethParamTypes.Length && (i + offset) < xParamTypes.Length; i++)
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{
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//Continue if current type is null i.e. was a pointer as that could be any type originally.
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if (xParamTypes[i + offset] != null && !posMethParamTypes[i].Equals(xParamTypes[i + offset]))
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{
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if (offset == 0)
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{
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offset = 1;
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i = -1;
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}
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else
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{
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OK = false;
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break;
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}
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}
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}
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if (posMethParamTypes.Length == 0 && xParamTypes.Length > 0)
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{
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//We use IsAssignableFrom here because _some_ plugs decide to use more generic types for the
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//this parameter
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OK = xParamTypes[0] == null || xParamTypes[0].IsAssignableFrom(posInf.DeclaringType);
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}
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if (!OK)
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{
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continue;
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}
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else
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{
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break;
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}
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}
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}
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}
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}
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if (OK)
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{
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if (ScanMethod != null)
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{
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ScanMethod(xMethod, true, "Plug Sub Method");
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}
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}
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else
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{
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if (LogException != null)
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{
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LogException(new Exception("Invalid plug method! Target method not found. : " + xMethod.GetFullName()));
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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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if (xAttrib.IsWildcard && xAttrib.Assembler == null)
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{
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Exception anEx = new Exception("Wildcard PlugMethods need to use an assembler for now.");
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if (ThrowExceptions)
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{
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throw anEx;
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}
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else
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{
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LogException(anEx);
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}
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}
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if (xAttrib.Enabled && !xAttrib.IsMonoOnly)
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{
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if (ScanMethod != null)
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{
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ScanMethod(xMethod, true, ".Net plug Method");
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}
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}
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}
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}
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#endregion
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#region PlugFields scan
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foreach (var xField in xImpl.GetCustomAttributes(typeof(PlugFieldAttribute), true).Cast<PlugFieldAttribute>())
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{
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IDictionary<string, PlugFieldAttribute> xFields = null;
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if (!mPlugFields.TryGetValue(xPlug.Key, out xFields))
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{
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xFields = new Dictionary<string, PlugFieldAttribute>();
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mPlugFields.Add(xPlug.Key, xFields);
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}
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if (xFields.ContainsKey(xField.FieldId))
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{
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Exception anEx = new Exception("Duplicate PlugField found for field '" + xField.FieldId + "'!");
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if (ThrowExceptions)
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{
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throw anEx;
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}
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else
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{
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LogException(anEx);
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}
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}
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xFields.Add(xField.FieldId, xField);
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}
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#endregion
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}
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}
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}
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public MethodBase ResolvePlug(Type aTargetType, List<Type> aImpls, MethodBase aMethod, Type[] aParamTypes)
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{
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//TODO: This method is "reversed" from old - remember that when porting
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MethodBase xResult = null;
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// Setup param types for search
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Type[] xParamTypes;
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if (aMethod.IsStatic)
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{
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xParamTypes = aParamTypes;
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}
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else
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{
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// If its an instance method, we have to add this to the ParamTypes to search
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xParamTypes = new Type[aParamTypes.Length + 1];
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if (aParamTypes.Length > 0)
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{
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aParamTypes.CopyTo(xParamTypes, 1);
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}
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xParamTypes[0] = aTargetType;
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}
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PlugMethodAttribute xAttrib = null;
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foreach (var xImpl in aImpls)
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{
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// TODO: cleanup this loop, next statement shouldnt be neccessary
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if (xResult != null)
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{
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break;
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}
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// Plugs methods must be static, and public
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// Search for non signature matches first since signature searches are slower
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xResult = xImpl.GetMethod(aMethod.Name, BindingFlags.Static | BindingFlags.Public
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, null, xParamTypes, null);
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if (xResult == null && aMethod.Name == ".ctor")
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{
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xResult = xImpl.GetMethod("Ctor", BindingFlags.Static | BindingFlags.Public
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, null, xParamTypes, null);
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}
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if (xResult == null && aMethod.Name == ".cctor")
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{
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xResult = xImpl.GetMethod("CCtor", BindingFlags.Static | BindingFlags.Public
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, null, xParamTypes, null);
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}
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if (xResult == null)
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{
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// Search by signature
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foreach (var xSigMethod in xImpl.GetMethods(BindingFlags.Static | BindingFlags.Public))
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{
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// TODO: Only allow one, but this code for now takes the last one
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// if there is more than one
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xAttrib = null;
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foreach (PlugMethodAttribute x in xSigMethod.GetCustomAttributes(typeof(PlugMethodAttribute), false))
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{
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xAttrib = x;
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}
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if (xAttrib != null && (xAttrib.IsWildcard && !xAttrib.WildcardMatchParameters))
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{
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MethodBase xTargetMethod = null;
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if (String.Compare(xSigMethod.Name, "Ctor", true) == 0 ||
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String.Compare(xSigMethod.Name, "Cctor", true) == 0)
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{
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xTargetMethod = aTargetType.GetConstructors(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance).SingleOrDefault();
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}
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else
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{
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xTargetMethod = (from item in aTargetType.GetMethods(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static | BindingFlags.Instance)
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where item.Name == xSigMethod.Name
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select item).SingleOrDefault();
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}
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if (xTargetMethod == aMethod)
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{
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xResult = xSigMethod;
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}
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}
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else
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{
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var xParams = xSigMethod.GetParameters();
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//TODO: Static method plugs dont seem to be separated
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// from instance ones, so the only way seems to be to try
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// to match instance first, and if no match try static.
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// I really don't like this and feel we need to find
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// an explicit way to determine or mark the method
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// implementations.
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//
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// Plug implementations take "this" as first argument
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// so when matching we don't include it in the search
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Type[] xTypesInst = null;
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var xActualParamCount = xParams.Length;
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foreach (var xParam in xParams)
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{
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if (xParam.GetCustomAttributes(typeof(FieldAccessAttribute), false).Length > 0)
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{
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xActualParamCount--;
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}
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}
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Type[] xTypesStatic = new Type[xActualParamCount];
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// If 0 params, has to be a static plug so we skip
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// any copying and leave xTypesInst = null
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// If 1 params, xTypesInst must be converted to Type[0]
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if (xActualParamCount == 1)
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{
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xTypesInst = new Type[0];
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var xReplaceType = xParams[0].GetCustomAttributes(typeof(FieldTypeAttribute), false);
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if (xReplaceType.Length == 1)
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xTypesStatic[0] = Type.GetType(((FieldTypeAttribute)xReplaceType[0]).Name, true);
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else
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xTypesStatic[0] = xParams[0].ParameterType;
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}
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else if (xActualParamCount > 1)
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{
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xTypesInst = new Type[xActualParamCount - 1];
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var xCurIdx = 0;
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foreach (var xParam in xParams.Skip(1))
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{
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if (xParam.GetCustomAttributes(typeof(FieldAccessAttribute), false).Length > 0)
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{
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continue;
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}
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var xReplaceType = xParam.GetCustomAttributes(typeof(FieldTypeAttribute), false);
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if (xReplaceType.Length == 1)
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xTypesInst[xCurIdx] = Type.GetType(((FieldTypeAttribute)xReplaceType[0]).Name, true);
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else
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xTypesInst[xCurIdx] = xParam.ParameterType;
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xCurIdx++;
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}
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xCurIdx = 0;
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foreach (var xParam in xParams)
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{
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if (xParam.GetCustomAttributes(typeof(FieldAccessAttribute), false).Length > 0)
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{
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xCurIdx++;
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continue;
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}
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if (xCurIdx >= xTypesStatic.Length)
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{
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break;
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}
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xTypesStatic[xCurIdx] = xParam.ParameterType;
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xCurIdx++;
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}
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}
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System.Reflection.MethodBase xTargetMethod = null;
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// TODO: In future make rule that all ctor plugs are called
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// ctor by name, or use a new attrib
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//TODO: Document all the plug stuff in a document on website
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//TODO: To make inclusion of plugs easy, we can make a plugs master
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// that references the other default plugs so user exes only
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// need to reference that one.
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// TODO: Skip FieldAccessAttribute if in impl
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if (xTypesInst != null)
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{
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if (string.Compare(xSigMethod.Name, "ctor", true) == 0)
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{
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xTargetMethod = aTargetType.GetConstructor(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, CallingConventions.Any, xTypesInst, null);
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}
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else
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{
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xTargetMethod = aTargetType.GetMethod(xSigMethod.Name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic, null, CallingConventions.Any, xTypesInst, null);
|
|
}
|
|
}
|
|
// Not an instance method, try static
|
|
if (xTargetMethod == null)
|
|
{
|
|
if (string.Compare(xSigMethod.Name, "cctor", true) == 0
|
|
|| string.Compare(xSigMethod.Name, "ctor", true) == 0)
|
|
{
|
|
xTargetMethod = aTargetType.GetConstructor(BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic, null, CallingConventions.Any, xTypesStatic, null);
|
|
}
|
|
else
|
|
{
|
|
xTargetMethod = aTargetType.GetMethod(xSigMethod.Name, BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic, null, CallingConventions.Any, xTypesStatic, null);
|
|
}
|
|
}
|
|
if (xTargetMethod == aMethod)
|
|
{
|
|
xResult = xSigMethod;
|
|
break;
|
|
}
|
|
if (xAttrib != null && xAttrib.Signature != null)
|
|
{
|
|
var xName = DataMember.FilterStringForIncorrectChars(LabelName.GenerateFullName(aMethod));
|
|
if (string.Compare(xName, xAttrib.Signature, true) == 0)
|
|
{
|
|
xResult = xSigMethod;
|
|
break;
|
|
}
|
|
}
|
|
xAttrib = null;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// check if signatur is equal
|
|
var xResPara = xResult.GetParameters();
|
|
var xAMethodPara = aMethod.GetParameters();
|
|
if (aMethod.IsStatic)
|
|
{
|
|
if (xResPara.Length != xAMethodPara.Length)
|
|
return null;
|
|
}
|
|
else
|
|
{
|
|
if (xResPara.Length - 1 != xAMethodPara.Length)
|
|
return null;
|
|
}
|
|
for (int i = 0; i < xAMethodPara.Length; i++)
|
|
{
|
|
int correctIndex = aMethod.IsStatic ? i : i + 1;
|
|
if (xResPara[correctIndex].ParameterType != xAMethodPara[i].ParameterType)
|
|
return null;
|
|
}
|
|
if (xResult.Name == "Ctor" && aMethod.Name == ".ctor")
|
|
{
|
|
}
|
|
else if (xResult.Name == "CCtor" && aMethod.Name == ".cctor")
|
|
{
|
|
}
|
|
else if (xResult.Name != aMethod.Name)
|
|
return null;
|
|
}
|
|
}
|
|
if (xResult == null)
|
|
return null;
|
|
|
|
// If we found a matching method, check for attributes
|
|
// that might disable it.
|
|
//TODO: For signature ones, we could cache the attrib. Thats
|
|
// why we check for null here
|
|
if (xAttrib == null)
|
|
{
|
|
// TODO: Only allow one, but this code for now takes the last one
|
|
// if there is more than one
|
|
foreach (PlugMethodAttribute x in xResult.GetCustomAttributes(typeof(PlugMethodAttribute), false))
|
|
{
|
|
xAttrib = x;
|
|
}
|
|
}
|
|
|
|
// See if we need to disable this plug
|
|
if (xAttrib != null)
|
|
{
|
|
if (!xAttrib.Enabled)
|
|
{
|
|
//xResult = null;
|
|
return null;
|
|
}
|
|
else if (xAttrib.IsMonoOnly)
|
|
{
|
|
//TODO: Check this against build options
|
|
//TODO: Two exclusive IsOnly's dont make sense
|
|
// refactor these as a positive rather than negative
|
|
// Same thing at type plug level
|
|
//xResult = null;
|
|
return null;
|
|
}
|
|
//else if (xAttrib.Signature != null) {
|
|
// var xName = DataMember.FilterStringForIncorrectChars(MethodInfoLabelGenerator.GenerateFullName(xResult));
|
|
// if (string.Compare(xName, xAttrib.Signature, true) != 0) {
|
|
// xResult = null;
|
|
// }
|
|
//}
|
|
}
|
|
|
|
InlineAttribute xInlineAttrib = null;
|
|
foreach (InlineAttribute inli in xResult.GetCustomAttributes(typeof(InlineAttribute), false))
|
|
{
|
|
xInlineAttrib = inli;
|
|
}
|
|
|
|
if (xInlineAttrib == null)
|
|
{
|
|
if (Queue != null)
|
|
{
|
|
Queue(xResult, null, "Plug Method");
|
|
}
|
|
}
|
|
|
|
//if (xAttrib != null && xAttrib.Signature != null)
|
|
//{
|
|
// var xTargetMethods = aTargetType.GetMethods(BindingFlags.Instance | BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic);
|
|
// //System_Void__Indy_IL2CPU_Assembler_Assembler__cctor__
|
|
// //If signature exists, the search is slow. Signatures
|
|
// //are infrequent though, so for now we just go slow method
|
|
// //and have not optimized or cached this info. When we
|
|
// //redo the plugs, we can fix this.
|
|
// bool xEnabled=true;
|
|
// foreach (var xTargetMethod in xTargetMethods)
|
|
// {
|
|
// string sName = DataMember.FilterStringForIncorrectChars(MethodInfoLabelGenerator.GenerateFullName(xTargetMethod));
|
|
// if (string.Compare(sName, xAttrib.Signature, true) == 0)
|
|
// {
|
|
// //uint xUID = QueueMethod(xPlugImpl.Plug, "Plug", xMethod, true);
|
|
// //mMethodPlugs.Add(xTargetMethod, new PlugInfo(xUID, xAttrib.Assembler));
|
|
// // Mark as disabled, because we already handled it
|
|
// xEnabled = false;
|
|
// break;
|
|
// }
|
|
// }
|
|
// // if still enabled, we didn't find our method
|
|
// if (xEnabled)
|
|
// {
|
|
// // todo: more precise error: imagine having a 100K line project, and this error happens...
|
|
// throw new Exception("Plug target method not found.");
|
|
// }
|
|
//}
|
|
return xResult;
|
|
}
|
|
public MethodBase ResolvePlug(MethodBase aMethod, Type[] aParamTypes)
|
|
{
|
|
MethodBase xResult = null;
|
|
var xMethodKey = BuildMethodKeyName(aMethod);
|
|
if (ResolvedPlugs.Contains(xMethodKey, out xResult))
|
|
{
|
|
return xResult;
|
|
}
|
|
else
|
|
{
|
|
// TODO: Right now plugs are compiled in, even if they are not needed.
|
|
// Maybe change this so plugs that are not needed are not compiled in?
|
|
// To do so, maybe plugs could be marked as they are used
|
|
|
|
List<Type> xImpls;
|
|
// Check for exact type plugs first, they have precedence
|
|
if (mPlugImpls.TryGetValue(aMethod.DeclaringType, out xImpls))
|
|
{
|
|
xResult = ResolvePlug(aMethod.DeclaringType, xImpls, aMethod, aParamTypes);
|
|
}
|
|
|
|
// Check for inheritable plugs second.
|
|
// We also need to fall through at method level, not just type.
|
|
// That is a exact type plug could exist, but not method match.
|
|
// In such a case the Inheritable methods should still be searched
|
|
// if there is a inheritable type match.
|
|
if (xResult == null)
|
|
{
|
|
foreach (var xInheritable in mPlugImplsInhrt)
|
|
{
|
|
if (aMethod.DeclaringType.IsSubclassOf(xInheritable.Key))
|
|
{
|
|
xResult = ResolvePlug(aMethod.DeclaringType/*xInheritable.Key*/, xInheritable.Value, aMethod, aParamTypes);
|
|
if (xResult != null)
|
|
{
|
|
// prevent key overriding.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ResolvedPlugs.Add(xMethodKey, xResult);
|
|
|
|
return xResult;
|
|
}
|
|
}
|
|
|
|
public void Clean()
|
|
{
|
|
mPlugImpls = new Dictionary<Type, List<Type>>();
|
|
mPlugImplsInhrt = new Dictionary<Type, List<Type>>();
|
|
mPlugFields = new Dictionary<Type, IDictionary<string, PlugFieldAttribute>>();
|
|
|
|
ResolvedPlugs = new Orvid.Collections.SkipList();
|
|
}
|
|
}
|
|
} |