/Mono.Cecil.Metadata/Utilities.cs
http://github.com/jbevain/cecil · C# · 650 lines · 628 code · 13 blank · 9 comment · 40 complexity · fe42e400a6fca96be9ee2674b5f4c5fa MD5 · raw file
- //
- // 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 System;
- using Mono.Cecil.Metadata;
- namespace Mono.Cecil {
- static partial class Mixin {
- public const int TableCount = 58;
- public const int CodedIndexCount = 14;
- public static uint ReadCompressedUInt32 (this byte [] data, ref int position)
- {
- uint integer;
- if ((data [position] & 0x80) == 0) {
- integer = data [position];
- position++;
- } else if ((data [position] & 0x40) == 0) {
- integer = (uint) (data [position] & ~0x80) << 8;
- integer |= data [position + 1];
- position += 2;
- } else {
- integer = (uint) (data [position] & ~0xc0) << 24;
- integer |= (uint) data [position + 1] << 16;
- integer |= (uint) data [position + 2] << 8;
- integer |= (uint) data [position + 3];
- position += 4;
- }
- return integer;
- }
- public static MetadataToken GetMetadataToken (this CodedIndex self, uint data)
- {
- uint rid;
- TokenType token_type;
- switch (self) {
- case CodedIndex.TypeDefOrRef:
- rid = data >> 2;
- switch (data & 3) {
- case 0:
- token_type = TokenType.TypeDef; goto ret;
- case 1:
- token_type = TokenType.TypeRef; goto ret;
- case 2:
- token_type = TokenType.TypeSpec; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.HasConstant:
- rid = data >> 2;
- switch (data & 3) {
- case 0:
- token_type = TokenType.Field; goto ret;
- case 1:
- token_type = TokenType.Param; goto ret;
- case 2:
- token_type = TokenType.Property; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.HasCustomAttribute:
- rid = data >> 5;
- switch (data & 31) {
- case 0:
- token_type = TokenType.Method; goto ret;
- case 1:
- token_type = TokenType.Field; goto ret;
- case 2:
- token_type = TokenType.TypeRef; goto ret;
- case 3:
- token_type = TokenType.TypeDef; goto ret;
- case 4:
- token_type = TokenType.Param; goto ret;
- case 5:
- token_type = TokenType.InterfaceImpl; goto ret;
- case 6:
- token_type = TokenType.MemberRef; goto ret;
- case 7:
- token_type = TokenType.Module; goto ret;
- case 8:
- token_type = TokenType.Permission; goto ret;
- case 9:
- token_type = TokenType.Property; goto ret;
- case 10:
- token_type = TokenType.Event; goto ret;
- case 11:
- token_type = TokenType.Signature; goto ret;
- case 12:
- token_type = TokenType.ModuleRef; goto ret;
- case 13:
- token_type = TokenType.TypeSpec; goto ret;
- case 14:
- token_type = TokenType.Assembly; goto ret;
- case 15:
- token_type = TokenType.AssemblyRef; goto ret;
- case 16:
- token_type = TokenType.File; goto ret;
- case 17:
- token_type = TokenType.ExportedType; goto ret;
- case 18:
- token_type = TokenType.ManifestResource; goto ret;
- case 19:
- token_type = TokenType.GenericParam; goto ret;
- case 20:
- token_type = TokenType.GenericParamConstraint; goto ret;
- case 21:
- token_type = TokenType.MethodSpec; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.HasFieldMarshal:
- rid = data >> 1;
- switch (data & 1) {
- case 0:
- token_type = TokenType.Field; goto ret;
- case 1:
- token_type = TokenType.Param; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.HasDeclSecurity:
- rid = data >> 2;
- switch (data & 3) {
- case 0:
- token_type = TokenType.TypeDef; goto ret;
- case 1:
- token_type = TokenType.Method; goto ret;
- case 2:
- token_type = TokenType.Assembly; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.MemberRefParent:
- rid = data >> 3;
- switch (data & 7) {
- case 0:
- token_type = TokenType.TypeDef; goto ret;
- case 1:
- token_type = TokenType.TypeRef; goto ret;
- case 2:
- token_type = TokenType.ModuleRef; goto ret;
- case 3:
- token_type = TokenType.Method; goto ret;
- case 4:
- token_type = TokenType.TypeSpec; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.HasSemantics:
- rid = data >> 1;
- switch (data & 1) {
- case 0:
- token_type = TokenType.Event; goto ret;
- case 1:
- token_type = TokenType.Property; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.MethodDefOrRef:
- rid = data >> 1;
- switch (data & 1) {
- case 0:
- token_type = TokenType.Method; goto ret;
- case 1:
- token_type = TokenType.MemberRef; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.MemberForwarded:
- rid = data >> 1;
- switch (data & 1) {
- case 0:
- token_type = TokenType.Field; goto ret;
- case 1:
- token_type = TokenType.Method; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.Implementation:
- rid = data >> 2;
- switch (data & 3) {
- case 0:
- token_type = TokenType.File; goto ret;
- case 1:
- token_type = TokenType.AssemblyRef; goto ret;
- case 2:
- token_type = TokenType.ExportedType; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.CustomAttributeType:
- rid = data >> 3;
- switch (data & 7) {
- case 2:
- token_type = TokenType.Method; goto ret;
- case 3:
- token_type = TokenType.MemberRef; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.ResolutionScope:
- rid = data >> 2;
- switch (data & 3) {
- case 0:
- token_type = TokenType.Module; goto ret;
- case 1:
- token_type = TokenType.ModuleRef; goto ret;
- case 2:
- token_type = TokenType.AssemblyRef; goto ret;
- case 3:
- token_type = TokenType.TypeRef; goto ret;
- default:
- goto exit;
- }
- case CodedIndex.TypeOrMethodDef:
- rid = data >> 1;
- switch (data & 1) {
- case 0:
- token_type = TokenType.TypeDef; goto ret;
- case 1:
- token_type = TokenType.Method; goto ret;
- default: goto exit;
- }
- case CodedIndex.HasCustomDebugInformation:
- rid = data >> 5;
- switch (data & 31) {
- case 0:
- token_type = TokenType.Method; goto ret;
- case 1:
- token_type = TokenType.Field; goto ret;
- case 2:
- token_type = TokenType.TypeRef; goto ret;
- case 3:
- token_type = TokenType.TypeDef; goto ret;
- case 4:
- token_type = TokenType.Param; goto ret;
- case 5:
- token_type = TokenType.InterfaceImpl; goto ret;
- case 6:
- token_type = TokenType.MemberRef; goto ret;
- case 7:
- token_type = TokenType.Module; goto ret;
- case 8:
- token_type = TokenType.Permission; goto ret;
- case 9:
- token_type = TokenType.Property; goto ret;
- case 10:
- token_type = TokenType.Event; goto ret;
- case 11:
- token_type = TokenType.Signature; goto ret;
- case 12:
- token_type = TokenType.ModuleRef; goto ret;
- case 13:
- token_type = TokenType.TypeSpec; goto ret;
- case 14:
- token_type = TokenType.Assembly; goto ret;
- case 15:
- token_type = TokenType.AssemblyRef; goto ret;
- case 16:
- token_type = TokenType.File; goto ret;
- case 17:
- token_type = TokenType.ExportedType; goto ret;
- case 18:
- token_type = TokenType.ManifestResource; goto ret;
- case 19:
- token_type = TokenType.GenericParam; goto ret;
- case 20:
- token_type = TokenType.GenericParamConstraint; goto ret;
- case 21:
- token_type = TokenType.MethodSpec; goto ret;
- case 22:
- token_type = TokenType.Document; goto ret;
- case 23:
- token_type = TokenType.LocalScope; goto ret;
- case 24:
- token_type = TokenType.LocalVariable; goto ret;
- case 25:
- token_type = TokenType.LocalConstant; goto ret;
- case 26:
- token_type = TokenType.ImportScope; goto ret;
- default:
- goto exit;
- }
- default:
- goto exit;
- }
- ret:
- return new MetadataToken (token_type, rid);
- exit:
- return MetadataToken.Zero;
- }
- public static uint CompressMetadataToken (this CodedIndex self, MetadataToken token)
- {
- uint ret = 0;
- if (token.RID == 0)
- return ret;
- switch (self) {
- case CodedIndex.TypeDefOrRef:
- ret = token.RID << 2;
- switch (token.TokenType) {
- case TokenType.TypeDef:
- return ret | 0;
- case TokenType.TypeRef:
- return ret | 1;
- case TokenType.TypeSpec:
- return ret | 2;
- default:
- goto exit;
- }
- case CodedIndex.HasConstant:
- ret = token.RID << 2;
- switch (token.TokenType) {
- case TokenType.Field:
- return ret | 0;
- case TokenType.Param:
- return ret | 1;
- case TokenType.Property:
- return ret | 2;
- default:
- goto exit;
- }
- case CodedIndex.HasCustomAttribute:
- ret = token.RID << 5;
- switch (token.TokenType) {
- case TokenType.Method:
- return ret | 0;
- case TokenType.Field:
- return ret | 1;
- case TokenType.TypeRef:
- return ret | 2;
- case TokenType.TypeDef:
- return ret | 3;
- case TokenType.Param:
- return ret | 4;
- case TokenType.InterfaceImpl:
- return ret | 5;
- case TokenType.MemberRef:
- return ret | 6;
- case TokenType.Module:
- return ret | 7;
- case TokenType.Permission:
- return ret | 8;
- case TokenType.Property:
- return ret | 9;
- case TokenType.Event:
- return ret | 10;
- case TokenType.Signature:
- return ret | 11;
- case TokenType.ModuleRef:
- return ret | 12;
- case TokenType.TypeSpec:
- return ret | 13;
- case TokenType.Assembly:
- return ret | 14;
- case TokenType.AssemblyRef:
- return ret | 15;
- case TokenType.File:
- return ret | 16;
- case TokenType.ExportedType:
- return ret | 17;
- case TokenType.ManifestResource:
- return ret | 18;
- case TokenType.GenericParam:
- return ret | 19;
- case TokenType.GenericParamConstraint:
- return ret | 20;
- case TokenType.MethodSpec:
- return ret | 21;
- default:
- goto exit;
- }
- case CodedIndex.HasFieldMarshal:
- ret = token.RID << 1;
- switch (token.TokenType) {
- case TokenType.Field:
- return ret | 0;
- case TokenType.Param:
- return ret | 1;
- default:
- goto exit;
- }
- case CodedIndex.HasDeclSecurity:
- ret = token.RID << 2;
- switch (token.TokenType) {
- case TokenType.TypeDef:
- return ret | 0;
- case TokenType.Method:
- return ret | 1;
- case TokenType.Assembly:
- return ret | 2;
- default:
- goto exit;
- }
- case CodedIndex.MemberRefParent:
- ret = token.RID << 3;
- switch (token.TokenType) {
- case TokenType.TypeDef:
- return ret | 0;
- case TokenType.TypeRef:
- return ret | 1;
- case TokenType.ModuleRef:
- return ret | 2;
- case TokenType.Method:
- return ret | 3;
- case TokenType.TypeSpec:
- return ret | 4;
- default:
- goto exit;
- }
- case CodedIndex.HasSemantics:
- ret = token.RID << 1;
- switch (token.TokenType) {
- case TokenType.Event:
- return ret | 0;
- case TokenType.Property:
- return ret | 1;
- default:
- goto exit;
- }
- case CodedIndex.MethodDefOrRef:
- ret = token.RID << 1;
- switch (token.TokenType) {
- case TokenType.Method:
- return ret | 0;
- case TokenType.MemberRef:
- return ret | 1;
- default:
- goto exit;
- }
- case CodedIndex.MemberForwarded:
- ret = token.RID << 1;
- switch (token.TokenType) {
- case TokenType.Field:
- return ret | 0;
- case TokenType.Method:
- return ret | 1;
- default:
- goto exit;
- }
- case CodedIndex.Implementation:
- ret = token.RID << 2;
- switch (token.TokenType) {
- case TokenType.File:
- return ret | 0;
- case TokenType.AssemblyRef:
- return ret | 1;
- case TokenType.ExportedType:
- return ret | 2;
- default:
- goto exit;
- }
- case CodedIndex.CustomAttributeType:
- ret = token.RID << 3;
- switch (token.TokenType) {
- case TokenType.Method:
- return ret | 2;
- case TokenType.MemberRef:
- return ret | 3;
- default:
- goto exit;
- }
- case CodedIndex.ResolutionScope:
- ret = token.RID << 2;
- switch (token.TokenType) {
- case TokenType.Module:
- return ret | 0;
- case TokenType.ModuleRef:
- return ret | 1;
- case TokenType.AssemblyRef:
- return ret | 2;
- case TokenType.TypeRef:
- return ret | 3;
- default:
- goto exit;
- }
- case CodedIndex.TypeOrMethodDef:
- ret = token.RID << 1;
- switch (token.TokenType) {
- case TokenType.TypeDef:
- return ret | 0;
- case TokenType.Method:
- return ret | 1;
- default:
- goto exit;
- }
- case CodedIndex.HasCustomDebugInformation:
- ret = token.RID << 5;
- switch (token.TokenType) {
- case TokenType.Method:
- return ret | 0;
- case TokenType.Field:
- return ret | 1;
- case TokenType.TypeRef:
- return ret | 2;
- case TokenType.TypeDef:
- return ret | 3;
- case TokenType.Param:
- return ret | 4;
- case TokenType.InterfaceImpl:
- return ret | 5;
- case TokenType.MemberRef:
- return ret | 6;
- case TokenType.Module:
- return ret | 7;
- case TokenType.Permission:
- return ret | 8;
- case TokenType.Property:
- return ret | 9;
- case TokenType.Event:
- return ret | 10;
- case TokenType.Signature:
- return ret | 11;
- case TokenType.ModuleRef:
- return ret | 12;
- case TokenType.TypeSpec:
- return ret | 13;
- case TokenType.Assembly:
- return ret | 14;
- case TokenType.AssemblyRef:
- return ret | 15;
- case TokenType.File:
- return ret | 16;
- case TokenType.ExportedType:
- return ret | 17;
- case TokenType.ManifestResource:
- return ret | 18;
- case TokenType.GenericParam:
- return ret | 19;
- case TokenType.GenericParamConstraint:
- return ret | 20;
- case TokenType.MethodSpec:
- return ret | 21;
- case TokenType.Document:
- return ret | 22;
- case TokenType.LocalScope:
- return ret | 23;
- case TokenType.LocalVariable:
- return ret | 24;
- case TokenType.LocalConstant:
- return ret | 25;
- case TokenType.ImportScope:
- return ret | 26;
- default:
- goto exit;
- }
- default:
- goto exit;
- }
- exit:
- throw new ArgumentException ();
- }
- public static int GetSize (this CodedIndex self, Func<Table, int> counter)
- {
- int bits;
- Table [] tables;
- switch (self) {
- case CodedIndex.TypeDefOrRef:
- bits = 2;
- tables = new [] { Table.TypeDef, Table.TypeRef, Table.TypeSpec };
- break;
- case CodedIndex.HasConstant:
- bits = 2;
- tables = new [] { Table.Field, Table.Param, Table.Property };
- break;
- case CodedIndex.HasCustomAttribute:
- bits = 5;
- tables = new [] {
- Table.Method, Table.Field, Table.TypeRef, Table.TypeDef, Table.Param, Table.InterfaceImpl, Table.MemberRef,
- Table.Module, Table.DeclSecurity, Table.Property, Table.Event, Table.StandAloneSig, Table.ModuleRef,
- Table.TypeSpec, Table.Assembly, Table.AssemblyRef, Table.File, Table.ExportedType,
- Table.ManifestResource, Table.GenericParam, Table.GenericParamConstraint, Table.MethodSpec,
- };
- break;
- case CodedIndex.HasFieldMarshal:
- bits = 1;
- tables = new [] { Table.Field, Table.Param };
- break;
- case CodedIndex.HasDeclSecurity:
- bits = 2;
- tables = new [] { Table.TypeDef, Table.Method, Table.Assembly };
- break;
- case CodedIndex.MemberRefParent:
- bits = 3;
- tables = new [] { Table.TypeDef, Table.TypeRef, Table.ModuleRef, Table.Method, Table.TypeSpec };
- break;
- case CodedIndex.HasSemantics:
- bits = 1;
- tables = new [] { Table.Event, Table.Property };
- break;
- case CodedIndex.MethodDefOrRef:
- bits = 1;
- tables = new [] { Table.Method, Table.MemberRef };
- break;
- case CodedIndex.MemberForwarded:
- bits = 1;
- tables = new [] { Table.Field, Table.Method };
- break;
- case CodedIndex.Implementation:
- bits = 2;
- tables = new [] { Table.File, Table.AssemblyRef, Table.ExportedType };
- break;
- case CodedIndex.CustomAttributeType:
- bits = 3;
- tables = new [] { Table.Method, Table.MemberRef };
- break;
- case CodedIndex.ResolutionScope:
- bits = 2;
- tables = new [] { Table.Module, Table.ModuleRef, Table.AssemblyRef, Table.TypeRef };
- break;
- case CodedIndex.TypeOrMethodDef:
- bits = 1;
- tables = new [] { Table.TypeDef, Table.Method };
- break;
- case CodedIndex.HasCustomDebugInformation:
- bits = 5;
- tables = new[] {
- Table.Method, Table.Field, Table.TypeRef, Table.TypeDef, Table.Param, Table.InterfaceImpl, Table.MemberRef,
- Table.Module, Table.DeclSecurity, Table.Property, Table.Event, Table.StandAloneSig, Table.ModuleRef,
- Table.TypeSpec, Table.Assembly, Table.AssemblyRef, Table.File, Table.ExportedType,
- Table.ManifestResource, Table.GenericParam, Table.GenericParamConstraint, Table.MethodSpec,
- Table.Document, Table.LocalScope, Table.LocalVariable, Table.LocalConstant, Table.ImportScope,
- };
- break;
- default:
- throw new ArgumentException ();
- }
- int max = 0;
- for (int i = 0; i < tables.Length; i++) {
- max = System.Math.Max (counter (tables [i]), max);
- }
- return max < (1 << (16 - bits)) ? 2 : 4;
- }
- }
- }