//
// TypeDefinition.cs
//
// Author:
//   Jb Evain (jbevain@gmail.com)
//
// Copyright (c) 2008 - 2011 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 Mono.Collections.Generic;
namespace Mono.Cecil {
	public sealed class TypeDefinition : TypeReference, IMemberDefinition, ISecurityDeclarationProvider {
		uint attributes;
		TypeReference base_type;
		internal Range fields_range;
		internal Range methods_range;
		short packing_size = Mixin.NotResolvedMarker;
		int class_size = Mixin.NotResolvedMarker;
		Collection<TypeReference> interfaces;
		Collection<TypeDefinition> nested_types;
		Collection<MethodDefinition> methods;
		Collection<FieldDefinition> fields;
		Collection<EventDefinition> events;
		Collection<PropertyDefinition> properties;
		Collection<CustomAttribute> custom_attributes;
		Collection<SecurityDeclaration> security_declarations;
		public TypeAttributes Attributes {
			get { return (TypeAttributes) attributes; }
			set { attributes = (uint) value; }
		}
		public TypeReference BaseType {
			get { return base_type; }
			set { base_type = value; }
		}
		void ResolveLayout ()
		{
			if (packing_size != Mixin.NotResolvedMarker || class_size != Mixin.NotResolvedMarker)
				return;
			if (!HasImage) {
				packing_size = Mixin.NoDataMarker;
				class_size = Mixin.NoDataMarker;
				return;
			}
			var row = Module.Read (this, (type, reader) => reader.ReadTypeLayout (type));
			packing_size = row.Col1;
			class_size = row.Col2;
		}
		public bool HasLayoutInfo {
			get {
				if (packing_size >= 0 || class_size >= 0)
					return true;
				ResolveLayout ();
				return packing_size >= 0 || class_size >= 0;
			}
		}
		public short PackingSize {
			get {
				if (packing_size >= 0)
					return packing_size;
				ResolveLayout ();
				return packing_size >= 0 ? packing_size : (short) -1;
			}
			set { packing_size = value; }
		}
		public int ClassSize {
			get {
				if (class_size >= 0)
					return class_size;
				ResolveLayout ();
				return class_size >= 0 ? class_size : -1;
			}
			set { class_size = value; }
		}
		public bool HasInterfaces {
			get {
				if (interfaces != null)
					return interfaces.Count > 0;
				if (HasImage)
					return Module.Read (this, (type, reader) => reader.HasInterfaces (type));
				return false;
			}
		}
		public Collection<TypeReference> Interfaces {
			get {
				if (interfaces != null)
					return interfaces;
				if (HasImage)
					return Module.Read (ref interfaces, this, (type, reader) => reader.ReadInterfaces (type));
				return interfaces = new Collection<TypeReference> ();
			}
		}
		public bool HasNestedTypes {
			get {
				if (nested_types != null)
					return nested_types.Count > 0;
				if (HasImage)
					return Module.Read (this, (type, reader) => reader.HasNestedTypes (type));
				return false;
			}
		}
		public Collection<TypeDefinition> NestedTypes {
			get {
				if (nested_types != null)
					return nested_types;
				if (HasImage)
					return Module.Read (ref nested_types, this, (type, reader) => reader.ReadNestedTypes (type));
				return nested_types = new MemberDefinitionCollection<TypeDefinition> (this);
			}
		}
		public bool HasMethods {
			get {
				if (methods != null)
					return methods.Count > 0;
				if (HasImage)
					return methods_range.Length > 0;
				return false;
			}
		}
		public Collection<MethodDefinition> Methods {
			get {
				if (methods != null)
					return methods;
				if (HasImage)
					return Module.Read (ref methods, this, (type, reader) => reader.ReadMethods (type));
				return methods = new MemberDefinitionCollection<MethodDefinition> (this);
			}
		}
		public bool HasFields {
			get {
				if (fields != null)
					return fields.Count > 0;
				if (HasImage)
					return fields_range.Length > 0;
				return false;
			}
		}
		public Collection<FieldDefinition> Fields {
			get {
				if (fields != null)
					return fields;
				if (HasImage)
					return Module.Read (ref fields, this, (type, reader) => reader.ReadFields (type));
				return fields = new MemberDefinitionCollection<FieldDefinition> (this);
			}
		}
		public bool HasEvents {
			get {
				if (events != null)
					return events.Count > 0;
				if (HasImage)
					return Module.Read (this, (type, reader) => reader.HasEvents (type));
				return false;
			}
		}
		public Collection<EventDefinition> Events {
			get {
				if (events != null)
					return events;
				if (HasImage)
					return Module.Read (ref events, this, (type, reader) => reader.ReadEvents (type));
				return events = new MemberDefinitionCollection<EventDefinition> (this);
			}
		}
		public bool HasProperties {
			get {
				if (properties != null)
					return properties.Count > 0;
				if (HasImage)
					return Module.Read (this, (type, reader) => reader.HasProperties (type));
				return false;
			}
		}
		public Collection<PropertyDefinition> Properties {
			get {
				if (properties != null)
					return properties;
				if (HasImage)
					return Module.Read (ref properties, this, (type, reader) => reader.ReadProperties (type));
				return properties = new MemberDefinitionCollection<PropertyDefinition> (this);
			}
		}
		public bool HasSecurityDeclarations {
			get {
				if (security_declarations != null)
					return security_declarations.Count > 0;
				return this.GetHasSecurityDeclarations (Module);
			}
		}
		public Collection<SecurityDeclaration> SecurityDeclarations {
			get { return security_declarations ?? (this.GetSecurityDeclarations (ref security_declarations, Module)); }
		}
		public bool HasCustomAttributes {
			get {
				if (custom_attributes != null)
					return custom_attributes.Count > 0;
				return this.GetHasCustomAttributes (Module);
			}
		}
		public Collection<CustomAttribute> CustomAttributes {
			get { return custom_attributes ?? (this.GetCustomAttributes (ref custom_attributes, Module)); }
		}
		public override bool HasGenericParameters {
			get {
				if (generic_parameters != null)
					return generic_parameters.Count > 0;
				return this.GetHasGenericParameters (Module);
			}
		}
		public override Collection<GenericParameter> GenericParameters {
			get { return generic_parameters ?? (this.GetGenericParameters (ref generic_parameters, Module)); }
		}
		#region TypeAttributes
		public bool IsNotPublic {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NotPublic); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NotPublic, value); }
		}
		public bool IsPublic {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.Public); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.Public, value); }
		}
		public bool IsNestedPublic {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedPublic); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedPublic, value); }
		}
		public bool IsNestedPrivate {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedPrivate); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedPrivate, value); }
		}
		public bool IsNestedFamily {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedFamily); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedFamily, value); }
		}
		public bool IsNestedAssembly {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedAssembly); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedAssembly, value); }
		}
		public bool IsNestedFamilyAndAssembly {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedFamANDAssem); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedFamANDAssem, value); }
		}
		public bool IsNestedFamilyOrAssembly {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedFamORAssem); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.VisibilityMask, (uint) TypeAttributes.NestedFamORAssem, value); }
		}
		public bool IsAutoLayout {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.LayoutMask, (uint) TypeAttributes.AutoLayout); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.LayoutMask, (uint) TypeAttributes.AutoLayout, value); }
		}
		public bool IsSequentialLayout {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.LayoutMask, (uint) TypeAttributes.SequentialLayout); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.LayoutMask, (uint) TypeAttributes.SequentialLayout, value); }
		}
		public bool IsExplicitLayout {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.LayoutMask, (uint) TypeAttributes.ExplicitLayout); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.LayoutMask, (uint) TypeAttributes.ExplicitLayout, value); }
		}
		public bool IsClass {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.ClassSemanticMask, (uint) TypeAttributes.Class); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.ClassSemanticMask, (uint) TypeAttributes.Class, value); }
		}
		public bool IsInterface {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.ClassSemanticMask, (uint) TypeAttributes.Interface); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.ClassSemanticMask, (uint) TypeAttributes.Interface, value); }
		}
		public bool IsAbstract {
			get { return attributes.GetAttributes ((uint) TypeAttributes.Abstract); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.Abstract, value); }
		}
		public bool IsSealed {
			get { return attributes.GetAttributes ((uint) TypeAttributes.Sealed); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.Sealed, value); }
		}
		public bool IsSpecialName {
			get { return attributes.GetAttributes ((uint) TypeAttributes.SpecialName); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.SpecialName, value); }
		}
		public bool IsImport {
			get { return attributes.GetAttributes ((uint) TypeAttributes.Import); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.Import, value); }
		}
		public bool IsSerializable {
			get { return attributes.GetAttributes ((uint) TypeAttributes.Serializable); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.Serializable, value); }
		}
		public bool IsAnsiClass {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.StringFormatMask, (uint) TypeAttributes.AnsiClass); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.StringFormatMask, (uint) TypeAttributes.AnsiClass, value); }
		}
		public bool IsUnicodeClass {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.StringFormatMask, (uint) TypeAttributes.UnicodeClass); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.StringFormatMask, (uint) TypeAttributes.UnicodeClass, value); }
		}
		public bool IsAutoClass {
			get { return attributes.GetMaskedAttributes ((uint) TypeAttributes.StringFormatMask, (uint) TypeAttributes.AutoClass); }
			set { attributes = attributes.SetMaskedAttributes ((uint) TypeAttributes.StringFormatMask, (uint) TypeAttributes.AutoClass, value); }
		}
		public bool IsBeforeFieldInit {
			get { return attributes.GetAttributes ((uint) TypeAttributes.BeforeFieldInit); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.BeforeFieldInit, value); }
		}
		public bool IsRuntimeSpecialName {
			get { return attributes.GetAttributes ((uint) TypeAttributes.RTSpecialName); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.RTSpecialName, value); }
		}
		public bool HasSecurity {
			get { return attributes.GetAttributes ((uint) TypeAttributes.HasSecurity); }
			set { attributes = attributes.SetAttributes ((uint) TypeAttributes.HasSecurity, value); }
		}
		#endregion
		public bool IsEnum {
			get { return base_type != null && base_type.IsTypeOf ("System", "Enum"); }
		}
		public override bool IsValueType {
			get {


Answer: 				if (base_type == null)