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//
// Import.cs
//
// Author:
// Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2010 Jb Evain
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using SR = System.Reflection;
using Mono.Cecil.Metadata;
namespace Mono.Cecil {
enum ImportGenericKind {
Definition,
Open,
}
class MetadataImporter {
readonly ModuleDefinition module;
public MetadataImporter (ModuleDefinition module)
{
this.module = module;
}
#if !CF
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 },
};
public TypeReference ImportType (Type type, IGenericContext context)
{
return ImportType (type, context, ImportGenericKind.Open);
}
public TypeReference ImportType (Type type, IGenericContext 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.Assembly),
type.IsValueType);
reference.etype = ImportElementType (type);
if (IsNestedType (type))
reference.DeclaringType = ImportType (type.DeclaringType, context, import_kind);
else
reference.Namespace = type.Namespace;
if (type.IsGenericType)
ImportGenericParameters (reference, type.GetGenericArguments ());
return reference;
}
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)
{
#if !SILVERLIGHT
return type.IsNested;
#else
return type.DeclaringType != null;
#endif
}
TypeReference ImportTypeSpecification (Type type, IGenericContext 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, IGenericContext context)
{
if (context == null)
throw new InvalidOperationException ();
var owner = type.DeclaringMethod != null
? context.Method
: context.Type;
if (owner == null)
throw new InvalidOperationException ();
return owner.GenericParameters [type.GenericParameterPosition];
}
TypeReference ImportGenericInstance (Type type, IGenericContext context)
{
var element_type = ImportType (type.GetGenericTypeDefinition (), context, ImportGenericKind.Definition);
var instance = new GenericInstanceType (element_type);
var arguments = type.GetGenericArguments ();
var instance_arguments = instance.GenericArguments;
for (int i = 0; i < arguments.Length; i++)
instance_arguments.Add (ImportType (arguments [i], context ?? element_type));
return instance;
}
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;
}
AssemblyNameReference ImportScope (SR.Assembly assembly)
{
AssemblyNameReference scope;
#if !SILVERLIGHT
var name = assembly.GetName ();
if (TryGetAssemblyNameReference (name, out scope))
return scope;
scope = new AssemblyNameReference (name.Name, name.Version) {
Culture = name.CultureInfo.Name,
PublicKeyToken = name.GetPublicKeyToken (),
HashAlgorithm = (AssemblyHashAlgorithm) name.HashAlgorithm,
};
module.AssemblyReferences.Add (scope);
return scope;
#else
var name = AssemblyNameReference.Parse (assembly.FullName);
if (TryGetAssemblyNameReference (name, out scope))
return scope;
module.AssemblyReferences.Add (name);
return name;
#endif
}
#if !SILVERLIGHT
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;
}
#endif
public FieldReference ImportField (SR.FieldInfo field, IGenericContext context)
{
var declaring_type = ImportType (field.DeclaringType, context);
if (IsGenericInstance (field.DeclaringType))
field = ResolveFieldDefinition (field);
return new FieldReference {
Name = field.Name,
DeclaringType = declaring_type,
FieldType = ImportType (field.FieldType, context ?? declaring_type),
};
}
static SR.FieldInfo ResolveFieldDefinition (SR.FieldInfo field)
{
#if !SILVERLIGHT
return field.Module.ResolveField (field.MetadataToken);
#else
return field.DeclaringType.GetGenericTypeDefinition ().GetField (field.Name,
SR.BindingFlags.Public
| SR.BindingFlags.NonPublic
| (field.IsStatic ? SR.BindingFlags.Static : SR.BindingFlags.Instance));
#endif
}
public MethodReference ImportMethod (SR.MethodBase method, IGenericContext 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 = method.Module.ResolveMethod (method.MetadataToken);
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 ());
var method_info = method as SR.MethodInfo;
reference.ReturnType = method_info != null
? ImportType (method_info.ReturnType, context ?? reference)
: ImportType (typeof (void), null);
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)));
reference.DeclaringType = declaring_type;
return reference;
}
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, IGenericContext 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;
for (int i = 0; i < arguments.Length; i++)
instance_arguments.Add (ImportType (arguments [i], context ?? element_method));
return instance;
}
static bool HasCallingConvention (SR.MethodBase method, SR.CallingConventions conventions)
{
return (method.CallingConvention & conventions) != 0;
}
#endif
public TypeReference ImportType (TypeReference type, IGenericContext context)
{
if (type.IsTypeSpecification ())
return ImportTypeSpecification (type, context);
var reference = new TypeReference (
type.Namespace,
type.Name,
module,
ImportScope (type.Scope),
type.IsValueType);
MetadataSystem.TryProcessPrimitiveType (reference);
if (type.IsNested)
reference.DeclaringType = ImportType (type.DeclaringType, context);
if (type.HasGenericParameters)
ImportGenericParameters (reference, type);
return reference;
}
IMetadataScope ImportScope (IMetadataScope scope)
{
switch (scope.MetadataScopeType) {
case MetadataScopeType.AssemblyNameReference:
return ImportAssemblyName ((AssemblyNameReference) scope);
case MetadataScopeType.ModuleDefinition:
return ImportAssemblyName (((ModuleDefinition) scope).Assembly.Name);
case MetadataScopeType.ModuleReference:
throw new NotImplementedException ();
}
throw new NotSupportedException ();
}
AssemblyNameReference ImportAssemblyName (AssemblyNameReference name)
{
AssemblyNameReference reference;
if (TryGetAssemblyNameReference (name, out reference))
return reference;
reference = new AssemblyNameReference (name.Name, name.Version) {
Culture = name.Culture,
HashAlgorithm = name.HashAlgorithm,
};
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;
module.AssemblyReferences.Add (reference);
return reference;
}
bool TryGetAssemblyNameReference (AssemblyNameReference name_reference, out AssemblyNameReference assembly_reference)
{
var references = module.AssemblyReferences;
for (int i = 0; i < references.Count; i++) {
var reference = references [i];
if (name_reference.FullName != reference.FullName) // TODO compare field by field
continue;
assembly_reference = reference;
return true;
}
assembly_reference = null;
return false;
}
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, IGenericContext 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.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 imported_instance = new GenericInstanceType (element_type);
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;
case ElementType.Var:
if (context == null || context.Type == null)
throw new InvalidOperationException ();
return ((TypeReference) context.Type).GetElementType ().GenericParameters [((GenericParameter) type).Position];
case ElementType.MVar:
if (context == null || context.Method == null)
throw new InvalidOperationException ();
return context.Method.GenericParameters [((GenericParameter) type).Position];
}
throw new NotSupportedException (type.etype.ToString ());
}
public FieldReference ImportField (FieldReference field, IGenericContext context)
{
var declaring_type = ImportType (field.DeclaringType, context);
return new FieldReference {
Name = field.Name,
DeclaringType = declaring_type,
FieldType = ImportType (field.FieldType, context ?? declaring_type),
};
}
public MethodReference ImportMethod (MethodReference method, IGenericContext 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,
};
reference.CallingConvention = method.CallingConvention;
if (method.HasGenericParameters)
ImportGenericParameters (reference, method);
reference.ReturnType = ImportType (method.ReturnType, context ?? reference);
if (!method.HasParameters)
return reference;
var reference_parameters = reference.Parameters;
var parameters = method.Parameters;
for (int i = 0; i < parameters.Count; i++)
reference_parameters.Add (
new ParameterDefinition (ImportType (parameters [i].ParameterType, context ?? reference)));
return reference;
}
MethodSpecification ImportMethodSpecification (MethodReference method, IGenericContext 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;
}
}
}
|