StationObscurum/Assets/FishNet/CodeGenerating/cecil-0.11.4/Mono.Cecil/Import.cs

859 lines
30 KiB
C#

//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2015 Jb Evain
// Copyright (c) 2008 - 2011 Novell, Inc.
//
// Licensed under the MIT/X11 license.
//
using MonoFN.Cecil.Metadata;
using MonoFN.Collections.Generic;
using System;
using System.Collections.Generic;
using SR = System.Reflection;
namespace MonoFN.Cecil
{
public interface IMetadataImporterProvider
{
IMetadataImporter GetMetadataImporter(ModuleDefinition module);
}
public interface IMetadataImporter
{
AssemblyNameReference ImportReference(AssemblyNameReference reference);
TypeReference ImportReference(TypeReference type, IGenericParameterProvider context);
FieldReference ImportReference(FieldReference field, IGenericParameterProvider context);
MethodReference ImportReference(MethodReference method, IGenericParameterProvider context);
}
public interface IReflectionImporterProvider
{
IReflectionImporter GetReflectionImporter(ModuleDefinition module);
}
public interface IReflectionImporter
{
AssemblyNameReference ImportReference(SR.AssemblyName reference);
TypeReference ImportReference(Type type, IGenericParameterProvider context);
FieldReference ImportReference(SR.FieldInfo field, IGenericParameterProvider context);
MethodReference ImportReference(SR.MethodBase method, IGenericParameterProvider context);
}
struct ImportGenericContext
{
Collection<IGenericParameterProvider> stack;
public bool IsEmpty { get { return stack == null; } }
public ImportGenericContext(IGenericParameterProvider provider)
{
if (provider == null)
throw new ArgumentNullException("provider");
stack = null;
Push(provider);
}
public void Push(IGenericParameterProvider provider)
{
if (stack == null)
stack = new Collection<IGenericParameterProvider>(1) { provider };
else
stack.Add(provider);
}
public void Pop()
{
stack.RemoveAt(stack.Count - 1);
}
public TypeReference MethodParameter(string method, int position)
{
for (int i = stack.Count - 1; i >= 0; i--)
{
var candidate = stack[i] as MethodReference;
if (candidate == null)
continue;
if (method != NormalizeMethodName(candidate))
continue;
return candidate.GenericParameters[position];
}
throw new InvalidOperationException();
}
public string NormalizeMethodName(MethodReference method)
{
return method.DeclaringType.GetElementType().FullName + "." + method.Name;
}
public TypeReference TypeParameter(string type, int position)
{
for (int i = stack.Count - 1; i >= 0; i--)
{
var candidate = GenericTypeFor(stack[i]);
if (candidate.FullName != type)
continue;
return candidate.GenericParameters[position];
}
throw new InvalidOperationException();
}
static TypeReference GenericTypeFor(IGenericParameterProvider context)
{
var type = context as TypeReference;
if (type != null)
return type.GetElementType();
var method = context as MethodReference;
if (method != null)
return method.DeclaringType.GetElementType();
throw new InvalidOperationException();
}
public static ImportGenericContext For(IGenericParameterProvider context)
{
return context != null ? new ImportGenericContext(context) : default(ImportGenericContext);
}
}
public class DefaultReflectionImporter : IReflectionImporter
{
readonly protected ModuleDefinition module;
public DefaultReflectionImporter(ModuleDefinition module)
{
Mixin.CheckModule(module);
this.module = module;
}
enum ImportGenericKind
{
Definition,
Open,
}
static readonly Dictionary<Type, ElementType> type_etype_mapping = new Dictionary<Type, ElementType>(18) {
{ typeof (void), ElementType.Void },
{ typeof (bool), ElementType.Boolean },
{ typeof (char), ElementType.Char },
{ typeof (sbyte), ElementType.I1 },
{ typeof (byte), ElementType.U1 },
{ typeof (short), ElementType.I2 },
{ typeof (ushort), ElementType.U2 },
{ typeof (int), ElementType.I4 },
{ typeof (uint), ElementType.U4 },
{ typeof (long), ElementType.I8 },
{ typeof (ulong), ElementType.U8 },
{ typeof (float), ElementType.R4 },
{ typeof (double), ElementType.R8 },
{ typeof (string), ElementType.String },
{ typeof (TypedReference), ElementType.TypedByRef },
{ typeof (IntPtr), ElementType.I },
{ typeof (UIntPtr), ElementType.U },
{ typeof (object), ElementType.Object },
};
TypeReference ImportType(Type type, ImportGenericContext context)
{
return ImportType(type, context, ImportGenericKind.Open);
}
TypeReference ImportType(Type type, ImportGenericContext context, ImportGenericKind import_kind)
{
if (IsTypeSpecification(type) || ImportOpenGenericType(type, import_kind))
return ImportTypeSpecification(type, context);
var reference = new TypeReference(
string.Empty,
type.Name,
module,
ImportScope(type),
type.IsValueType);
reference.etype = ImportElementType(type);
if (IsNestedType(type))
reference.DeclaringType = ImportType(type.DeclaringType, context, import_kind);
else
reference.Namespace = type.Namespace ?? string.Empty;
if (type.IsGenericType)
ImportGenericParameters(reference, type.GetGenericArguments());
return reference;
}
protected virtual IMetadataScope ImportScope(Type type)
{
return ImportScope(type.Assembly);
}
static bool ImportOpenGenericType(Type type, ImportGenericKind import_kind)
{
return type.IsGenericType && type.IsGenericTypeDefinition && import_kind == ImportGenericKind.Open;
}
static bool ImportOpenGenericMethod(SR.MethodBase method, ImportGenericKind import_kind)
{
return method.IsGenericMethod && method.IsGenericMethodDefinition && import_kind == ImportGenericKind.Open;
}
static bool IsNestedType(Type type)
{
return type.IsNested;
}
TypeReference ImportTypeSpecification(Type type, ImportGenericContext context)
{
if (type.IsByRef)
return new ByReferenceType(ImportType(type.GetElementType(), context));
if (type.IsPointer)
return new PointerType(ImportType(type.GetElementType(), context));
if (type.IsArray)
return new ArrayType(ImportType(type.GetElementType(), context), type.GetArrayRank());
if (type.IsGenericType)
return ImportGenericInstance(type, context);
if (type.IsGenericParameter)
return ImportGenericParameter(type, context);
throw new NotSupportedException(type.FullName);
}
static TypeReference ImportGenericParameter(Type type, ImportGenericContext context)
{
if (context.IsEmpty)
throw new InvalidOperationException();
if (type.DeclaringMethod != null)
return context.MethodParameter(NormalizeMethodName(type.DeclaringMethod), type.GenericParameterPosition);
if (type.DeclaringType != null)
return context.TypeParameter(NormalizeTypeFullName(type.DeclaringType), type.GenericParameterPosition);
throw new InvalidOperationException();
}
static string NormalizeMethodName(SR.MethodBase method)
{
return NormalizeTypeFullName(method.DeclaringType) + "." + method.Name;
}
static string NormalizeTypeFullName(Type type)
{
if (IsNestedType(type))
return NormalizeTypeFullName(type.DeclaringType) + "/" + type.Name;
return type.FullName;
}
TypeReference ImportGenericInstance(Type type, ImportGenericContext context)
{
var element_type = ImportType(type.GetGenericTypeDefinition(), context, ImportGenericKind.Definition);
var arguments = type.GetGenericArguments();
var instance = new GenericInstanceType(element_type, arguments.Length);
var instance_arguments = instance.GenericArguments;
context.Push(element_type);
try
{
for (int i = 0; i < arguments.Length; i++)
instance_arguments.Add(ImportType(arguments[i], context));
return instance;
}
finally
{
context.Pop();
}
}
static bool IsTypeSpecification(Type type)
{
return type.HasElementType
|| IsGenericInstance(type)
|| type.IsGenericParameter;
}
static bool IsGenericInstance(Type type)
{
return type.IsGenericType && !type.IsGenericTypeDefinition;
}
static ElementType ImportElementType(Type type)
{
ElementType etype;
if (!type_etype_mapping.TryGetValue(type, out etype))
return ElementType.None;
return etype;
}
protected AssemblyNameReference ImportScope(SR.Assembly assembly)
{
return ImportReference(assembly.GetName());
}
public virtual AssemblyNameReference ImportReference(SR.AssemblyName name)
{
Mixin.CheckName(name);
AssemblyNameReference reference;
if (TryGetAssemblyNameReference(name, out reference))
return reference;
reference = new AssemblyNameReference(name.Name, name.Version)
{
PublicKeyToken = name.GetPublicKeyToken(),
Culture = name.CultureInfo.Name,
HashAlgorithm = (AssemblyHashAlgorithm)name.HashAlgorithm,
};
module.AssemblyReferences.Add(reference);
return reference;
}
bool TryGetAssemblyNameReference(SR.AssemblyName name, out AssemblyNameReference assembly_reference)
{
var references = module.AssemblyReferences;
for (int i = 0; i < references.Count; i++)
{
var reference = references[i];
if (name.FullName != reference.FullName) // TODO compare field by field
continue;
assembly_reference = reference;
return true;
}
assembly_reference = null;
return false;
}
FieldReference ImportField(SR.FieldInfo field, ImportGenericContext context)
{
var declaring_type = ImportType(field.DeclaringType, context);
if (IsGenericInstance(field.DeclaringType))
field = ResolveFieldDefinition(field);
context.Push(declaring_type);
try
{
return new FieldReference
{
Name = field.Name,
DeclaringType = declaring_type,
FieldType = ImportType(field.FieldType, context),
};
}
finally
{
context.Pop();
}
}
static SR.FieldInfo ResolveFieldDefinition(SR.FieldInfo field)
{
return field.Module.ResolveField(field.MetadataToken);
}
static SR.MethodBase ResolveMethodDefinition(SR.MethodBase method)
{
return method.Module.ResolveMethod(method.MetadataToken);
}
MethodReference ImportMethod(SR.MethodBase method, ImportGenericContext context, ImportGenericKind import_kind)
{
if (IsMethodSpecification(method) || ImportOpenGenericMethod(method, import_kind))
return ImportMethodSpecification(method, context);
var declaring_type = ImportType(method.DeclaringType, context);
if (IsGenericInstance(method.DeclaringType))
method = ResolveMethodDefinition(method);
var reference = new MethodReference
{
Name = method.Name,
HasThis = HasCallingConvention(method, SR.CallingConventions.HasThis),
ExplicitThis = HasCallingConvention(method, SR.CallingConventions.ExplicitThis),
DeclaringType = ImportType(method.DeclaringType, context, ImportGenericKind.Definition),
};
if (HasCallingConvention(method, SR.CallingConventions.VarArgs))
reference.CallingConvention &= MethodCallingConvention.VarArg;
if (method.IsGenericMethod)
ImportGenericParameters(reference, method.GetGenericArguments());
context.Push(reference);
try
{
var method_info = method as SR.MethodInfo;
reference.ReturnType = method_info != null
? ImportType(method_info.ReturnType, context)
: ImportType(typeof(void), default(ImportGenericContext));
var parameters = method.GetParameters();
var reference_parameters = reference.Parameters;
for (int i = 0; i < parameters.Length; i++)
reference_parameters.Add(
new ParameterDefinition(ImportType(parameters[i].ParameterType, context)));
reference.DeclaringType = declaring_type;
return reference;
}
finally
{
context.Pop();
}
}
static void ImportGenericParameters(IGenericParameterProvider provider, Type[] arguments)
{
var provider_parameters = provider.GenericParameters;
for (int i = 0; i < arguments.Length; i++)
provider_parameters.Add(new GenericParameter(arguments[i].Name, provider));
}
static bool IsMethodSpecification(SR.MethodBase method)
{
return method.IsGenericMethod && !method.IsGenericMethodDefinition;
}
MethodReference ImportMethodSpecification(SR.MethodBase method, ImportGenericContext context)
{
var method_info = method as SR.MethodInfo;
if (method_info == null)
throw new InvalidOperationException();
var element_method = ImportMethod(method_info.GetGenericMethodDefinition(), context, ImportGenericKind.Definition);
var instance = new GenericInstanceMethod(element_method);
var arguments = method.GetGenericArguments();
var instance_arguments = instance.GenericArguments;
context.Push(element_method);
try
{
for (int i = 0; i < arguments.Length; i++)
instance_arguments.Add(ImportType(arguments[i], context));
return instance;
}
finally
{
context.Pop();
}
}
static bool HasCallingConvention(SR.MethodBase method, SR.CallingConventions conventions)
{
return (method.CallingConvention & conventions) != 0;
}
public virtual TypeReference ImportReference(Type type, IGenericParameterProvider context)
{
Mixin.CheckType(type);
return ImportType(
type,
ImportGenericContext.For(context),
context != null ? ImportGenericKind.Open : ImportGenericKind.Definition);
}
public virtual FieldReference ImportReference(SR.FieldInfo field, IGenericParameterProvider context)
{
Mixin.CheckField(field);
return ImportField(field, ImportGenericContext.For(context));
}
public virtual MethodReference ImportReference(SR.MethodBase method, IGenericParameterProvider context)
{
Mixin.CheckMethod(method);
return ImportMethod(method,
ImportGenericContext.For(context),
context != null ? ImportGenericKind.Open : ImportGenericKind.Definition);
}
}
public class DefaultMetadataImporter : IMetadataImporter
{
readonly protected ModuleDefinition module;
public DefaultMetadataImporter(ModuleDefinition module)
{
Mixin.CheckModule(module);
this.module = module;
}
TypeReference ImportType(TypeReference type, ImportGenericContext context)
{
if (type.IsTypeSpecification())
return ImportTypeSpecification(type, context);
var reference = new TypeReference(
type.Namespace,
type.Name,
module,
ImportScope(type),
type.IsValueType);
MetadataSystem.TryProcessPrimitiveTypeReference(reference);
if (type.IsNested)
reference.DeclaringType = ImportType(type.DeclaringType, context);
if (type.HasGenericParameters)
ImportGenericParameters(reference, type);
return reference;
}
protected virtual IMetadataScope ImportScope(TypeReference type)
{
return ImportScope(type.Scope);
}
protected IMetadataScope ImportScope(IMetadataScope scope)
{
switch (scope.MetadataScopeType)
{
case MetadataScopeType.AssemblyNameReference:
return ImportReference((AssemblyNameReference)scope);
case MetadataScopeType.ModuleDefinition:
if (scope == module) return scope;
return ImportReference(((ModuleDefinition)scope).Assembly.Name);
case MetadataScopeType.ModuleReference:
throw new NotImplementedException();
}
throw new NotSupportedException();
}
public virtual AssemblyNameReference ImportReference(AssemblyNameReference name)
{
Mixin.CheckName(name);
AssemblyNameReference reference;
if (module.TryGetAssemblyNameReference(name, out reference))
return reference;
reference = new AssemblyNameReference(name.Name, name.Version)
{
Culture = name.Culture,
HashAlgorithm = name.HashAlgorithm,
IsRetargetable = name.IsRetargetable,
IsWindowsRuntime = name.IsWindowsRuntime,
};
var pk_token = !name.PublicKeyToken.IsNullOrEmpty()
? new byte[name.PublicKeyToken.Length]
: Empty<byte>.Array;
if (pk_token.Length > 0)
Buffer.BlockCopy(name.PublicKeyToken, 0, pk_token, 0, pk_token.Length);
reference.PublicKeyToken = pk_token;
//Only add if not self.
if (CanAddAssemblyNameReference(module, reference))
module.AssemblyReferences.Add(reference);
return reference;
}
private bool CanAddAssemblyNameReference(ModuleDefinition module, AssemblyNameReference nameRef)
{
return true;
//return (module.assembly.FullName != nameRef.FullName);
}
static void ImportGenericParameters(IGenericParameterProvider imported, IGenericParameterProvider original)
{
var parameters = original.GenericParameters;
var imported_parameters = imported.GenericParameters;
for (int i = 0; i < parameters.Count; i++)
imported_parameters.Add(new GenericParameter(parameters[i].Name, imported));
}
TypeReference ImportTypeSpecification(TypeReference type, ImportGenericContext context)
{
switch (type.etype)
{
case ElementType.SzArray:
var vector = (ArrayType)type;
return new ArrayType(ImportType(vector.ElementType, context));
case ElementType.Ptr:
var pointer = (PointerType)type;
return new PointerType(ImportType(pointer.ElementType, context));
case ElementType.ByRef:
var byref = (ByReferenceType)type;
return new ByReferenceType(ImportType(byref.ElementType, context));
case ElementType.Pinned:
var pinned = (PinnedType)type;
return new PinnedType(ImportType(pinned.ElementType, context));
case ElementType.Sentinel:
var sentinel = (SentinelType)type;
return new SentinelType(ImportType(sentinel.ElementType, context));
case ElementType.FnPtr:
var fnptr = (FunctionPointerType)type;
var imported_fnptr = new FunctionPointerType()
{
HasThis = fnptr.HasThis,
ExplicitThis = fnptr.ExplicitThis,
CallingConvention = fnptr.CallingConvention,
ReturnType = ImportType(fnptr.ReturnType, context),
};
if (!fnptr.HasParameters)
return imported_fnptr;
for (int i = 0; i < fnptr.Parameters.Count; i++)
imported_fnptr.Parameters.Add(new ParameterDefinition(
ImportType(fnptr.Parameters[i].ParameterType, context)));
return imported_fnptr;
case ElementType.CModOpt:
var modopt = (OptionalModifierType)type;
return new OptionalModifierType(
ImportType(modopt.ModifierType, context),
ImportType(modopt.ElementType, context));
case ElementType.CModReqD:
var modreq = (RequiredModifierType)type;
return new RequiredModifierType(
ImportType(modreq.ModifierType, context),
ImportType(modreq.ElementType, context));
case ElementType.Array:
var array = (ArrayType)type;
var imported_array = new ArrayType(ImportType(array.ElementType, context));
if (array.IsVector)
return imported_array;
var dimensions = array.Dimensions;
var imported_dimensions = imported_array.Dimensions;
imported_dimensions.Clear();
for (int i = 0; i < dimensions.Count; i++)
{
var dimension = dimensions[i];
imported_dimensions.Add(new ArrayDimension(dimension.LowerBound, dimension.UpperBound));
}
return imported_array;
case ElementType.GenericInst:
var instance = (GenericInstanceType)type;
var element_type = ImportType(instance.ElementType, context);
var arguments = instance.GenericArguments;
var imported_instance = new GenericInstanceType(element_type, arguments.Count);
var imported_arguments = imported_instance.GenericArguments;
for (int i = 0; i < arguments.Count; i++)
imported_arguments.Add(ImportType(arguments[i], context));
return imported_instance;
case ElementType.Var:
var var_parameter = (GenericParameter)type;
if (var_parameter.DeclaringType == null)
throw new InvalidOperationException();
return context.TypeParameter(var_parameter.DeclaringType.FullName, var_parameter.Position);
case ElementType.MVar:
var mvar_parameter = (GenericParameter)type;
if (mvar_parameter.DeclaringMethod == null)
throw new InvalidOperationException();
return context.MethodParameter(context.NormalizeMethodName(mvar_parameter.DeclaringMethod), mvar_parameter.Position);
}
throw new NotSupportedException(type.etype.ToString());
}
FieldReference ImportField(FieldReference field, ImportGenericContext context)
{
var declaring_type = ImportType(field.DeclaringType, context);
context.Push(declaring_type);
try
{
return new FieldReference
{
Name = field.Name,
DeclaringType = declaring_type,
FieldType = ImportType(field.FieldType, context),
};
}
finally
{
context.Pop();
}
}
MethodReference ImportMethod(MethodReference method, ImportGenericContext context)
{
if (method.IsGenericInstance)
return ImportMethodSpecification(method, context);
var declaring_type = ImportType(method.DeclaringType, context);
var reference = new MethodReference
{
Name = method.Name,
HasThis = method.HasThis,
ExplicitThis = method.ExplicitThis,
DeclaringType = declaring_type,
CallingConvention = method.CallingConvention,
};
if (method.HasGenericParameters)
ImportGenericParameters(reference, method);
context.Push(reference);
try
{
reference.ReturnType = ImportType(method.ReturnType, context);
if (!method.HasParameters)
return reference;
var parameters = method.Parameters;
var reference_parameters = reference.parameters = new ParameterDefinitionCollection(reference, parameters.Count);
for (int i = 0; i < parameters.Count; i++)
reference_parameters.Add(
new ParameterDefinition(ImportType(parameters[i].ParameterType, context)));
return reference;
}
finally
{
context.Pop();
}
}
MethodSpecification ImportMethodSpecification(MethodReference method, ImportGenericContext context)
{
if (!method.IsGenericInstance)
throw new NotSupportedException();
var instance = (GenericInstanceMethod)method;
var element_method = ImportMethod(instance.ElementMethod, context);
var imported_instance = new GenericInstanceMethod(element_method);
var arguments = instance.GenericArguments;
var imported_arguments = imported_instance.GenericArguments;
for (int i = 0; i < arguments.Count; i++)
imported_arguments.Add(ImportType(arguments[i], context));
return imported_instance;
}
public virtual TypeReference ImportReference(TypeReference type, IGenericParameterProvider context)
{
Mixin.CheckType(type);
return ImportType(type, ImportGenericContext.For(context));
}
public virtual FieldReference ImportReference(FieldReference field, IGenericParameterProvider context)
{
Mixin.CheckField(field);
return ImportField(field, ImportGenericContext.For(context));
}
public virtual MethodReference ImportReference(MethodReference method, IGenericParameterProvider context)
{
Mixin.CheckMethod(method);
return ImportMethod(method, ImportGenericContext.For(context));
}
}
static partial class Mixin
{
public static void CheckModule(ModuleDefinition module)
{
if (module == null)
throw new ArgumentNullException(Argument.module.ToString());
}
public static bool TryGetAssemblyNameReference(this ModuleDefinition module, AssemblyNameReference name_reference, out AssemblyNameReference assembly_reference)
{
var references = module.AssemblyReferences;
for (int i = 0; i < references.Count; i++)
{
var reference = references[i];
if (!Equals(name_reference, reference))
continue;
assembly_reference = reference;
return true;
}
assembly_reference = null;
return false;
}
static bool Equals(byte[] a, byte[] b)
{
if (ReferenceEquals(a, b))
return true;
if (a == null)
return false;
if (a.Length != b.Length)
return false;
for (int i = 0; i < a.Length; i++)
if (a[i] != b[i])
return false;
return true;
}
static bool Equals<T>(T a, T b) where T : class, IEquatable<T>
{
if (ReferenceEquals(a, b))
return true;
if (a == null)
return false;
return a.Equals(b);
}
static bool Equals(AssemblyNameReference a, AssemblyNameReference b)
{
if (ReferenceEquals(a, b))
return true;
if (a.Name != b.Name)
return false;
if (!Equals(a.Version, b.Version))
return false;
if (a.Culture != b.Culture)
return false;
if (!Equals(a.PublicKeyToken, b.PublicKeyToken))
return false;
return true;
}
}
}