C# ClassFile.GetConstantPoolUtf8String方法代码示例

		private static object ReadAnnotation(BigEndianBinaryReader rdr, ClassFile classFile, string[] utf8_cp)
		{
			string type = classFile.GetConstantPoolUtf8String(utf8_cp, rdr.ReadUInt16());
			ushort num_element_value_pairs = rdr.ReadUInt16();
			object[] annot = new object[2 + num_element_value_pairs * 2];
			annot[0] = AnnotationDefaultAttribute.TAG_ANNOTATION;
			annot[1] = type;
			for(int i = 0; i < num_element_value_pairs; i++)
			{
				annot[2 + i * 2 + 0] = classFile.GetConstantPoolUtf8String(utf8_cp, rdr.ReadUInt16());
				annot[2 + i * 2 + 1] = ReadAnnotationElementValue(rdr, classFile, utf8_cp);
			}
			return annot;
		}

		private static object ReadAnnotationElementValue(BigEndianBinaryReader rdr, ClassFile classFile, string[] utf8_cp)
		{
			try
			{
				byte tag = rdr.ReadByte();
				switch (tag)
				{
					case (byte)'Z':
						return classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16()) != 0;
					case (byte)'B':
						return (byte)classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
					case (byte)'C':
						return (char)classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
					case (byte)'S':
						return (short)classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
					case (byte)'I':
						return classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
					case (byte)'F':
						return classFile.GetConstantPoolConstantFloat(rdr.ReadUInt16());
					case (byte)'J':
						return classFile.GetConstantPoolConstantLong(rdr.ReadUInt16());
					case (byte)'D':
						return classFile.GetConstantPoolConstantDouble(rdr.ReadUInt16());
					case (byte)'s':
						return classFile.GetConstantPoolUtf8String(utf8_cp, rdr.ReadUInt16());
					case (byte)'e':
						{
							ushort type_name_index = rdr.ReadUInt16();
							ushort const_name_index = rdr.ReadUInt16();
							return new object[] {
											AnnotationDefaultAttribute.TAG_ENUM,
											classFile.GetConstantPoolUtf8String(utf8_cp, type_name_index),
											classFile.GetConstantPoolUtf8String(utf8_cp, const_name_index)
										};
						}
					case (byte)'c':
						return new object[] {
											AnnotationDefaultAttribute.TAG_CLASS,
											classFile.GetConstantPoolUtf8String(utf8_cp, rdr.ReadUInt16())
										};
					case (byte)'@':
						return ReadAnnotation(rdr, classFile, utf8_cp);
					case (byte)'[':
						{
							ushort num_values = rdr.ReadUInt16();
							object[] array = new object[num_values + 1];
							array[0] = AnnotationDefaultAttribute.TAG_ARRAY;
							for (int i = 0; i < num_values; i++)
							{
								array[i + 1] = ReadAnnotationElementValue(rdr, classFile, utf8_cp);
							}
							return array;
						}
					default:
						throw new ClassFormatError("Invalid tag {0} in annotation element_value", tag);
				}
			}
			catch (NullReferenceException)
			{
			}
			catch (InvalidCastException)
			{
			}
			catch (IndexOutOfRangeException)
			{
			}
			return new object[] { AnnotationDefaultAttribute.TAG_ERROR, "java.lang.IllegalArgumentException", "Wrong type at constant pool index" };
		}

//.........这里部分代码省略.........
					{
						ushort start_pc = br.ReadUInt16();
						ushort end_pc = br.ReadUInt16();
						ushort handler_pc = br.ReadUInt16();
						ushort catch_type = br.ReadUInt16();
						if(start_pc >= end_pc
							|| end_pc > code_length
							|| handler_pc >= code_length
							|| (catch_type != 0 && !classFile.SafeIsConstantPoolClass(catch_type)))
						{
							throw new ClassFormatError("Illegal exception table: {0}.{1}{2}", classFile.Name, method.Name, method.Signature);
						}
						// if start_pc, end_pc or handler_pc is invalid (i.e. doesn't point to the start of an instruction),
						// the index will be -1 and this will be handled by the verifier
						int startIndex = pcIndexMap[start_pc];
						int endIndex;
						if (end_pc == code_length)
						{
							// it is legal for end_pc to point to just after the last instruction,
							// but since there isn't an entry in our pcIndexMap for that, we have
							// a special case for this
							endIndex = instructionIndex - 1;
						}
						else
						{
							endIndex = pcIndexMap[end_pc];
						}
						int handlerIndex = pcIndexMap[handler_pc];
						exception_table[i] = new ExceptionTableEntry(startIndex, endIndex, handlerIndex, catch_type, i);
					}
					ushort attributes_count = br.ReadUInt16();
					for(int i = 0; i < attributes_count; i++)
					{
						switch(classFile.GetConstantPoolUtf8String(br.ReadUInt16()))
						{
							case "LineNumberTable":
								if((options & ClassFileParseOptions.LineNumberTable) != 0)
								{
									BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
									int count = rdr.ReadUInt16();
									lineNumberTable = new LineNumberTableEntry[count];
									for(int j = 0; j < count; j++)
									{
										lineNumberTable[j].start_pc = rdr.ReadUInt16();
										lineNumberTable[j].line_number = rdr.ReadUInt16();
										if(lineNumberTable[j].start_pc >= code_length)
										{
											throw new ClassFormatError("{0} (LineNumberTable has invalid pc)", classFile.Name);
										}
									}
									if(!rdr.IsAtEnd)
									{
										throw new ClassFormatError("{0} (LineNumberTable attribute has wrong length)", classFile.Name);
									}
								}
								else
								{
									br.Skip(br.ReadUInt32());
								}
								break;
							case "LocalVariableTable":
								if((options & ClassFileParseOptions.LocalVariableTable) != 0)
								{
									BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
									int count = rdr.ReadUInt16();
									localVariableTable = new LocalVariableTableEntry[count];

		private static object ReadAnnotationElementValue(BigEndianBinaryReader rdr, ClassFile classFile)
		{
			byte tag = rdr.ReadByte();
			switch(tag)
			{
				case (byte)'Z':
					return classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16()) != 0;
				case (byte)'B':
					return (byte)classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
				case (byte)'C':
					return (char)classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
				case (byte)'S':
					return (short)classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
				case (byte)'I':
					return classFile.GetConstantPoolConstantInteger(rdr.ReadUInt16());
				case (byte)'F':
					return classFile.GetConstantPoolConstantFloat(rdr.ReadUInt16());
				case (byte)'J':
					return classFile.GetConstantPoolConstantLong(rdr.ReadUInt16());
				case (byte)'D':
					return classFile.GetConstantPoolConstantDouble(rdr.ReadUInt16());
				case (byte)'s':
					return classFile.GetConstantPoolUtf8String(rdr.ReadUInt16());
				case (byte)'e':
				{
					ushort type_name_index = rdr.ReadUInt16();
					ushort const_name_index = rdr.ReadUInt16();
					return new object[] {
											AnnotationDefaultAttribute.TAG_ENUM,
											classFile.GetConstantPoolUtf8String(type_name_index),
											classFile.GetConstantPoolUtf8String(const_name_index)
										};
				}
				case (byte)'c':
					return new object[] {
											AnnotationDefaultAttribute.TAG_CLASS,
											classFile.GetConstantPoolUtf8String(rdr.ReadUInt16())
										};
				case (byte)'@':
					return ReadAnnotation(rdr, classFile);
				case (byte)'[':
				{
					ushort num_values = rdr.ReadUInt16();
					object[] array = new object[num_values + 1];
					array[0] = AnnotationDefaultAttribute.TAG_ARRAY;
					for(int i = 0; i < num_values; i++)
					{
						array[i + 1] = ReadAnnotationElementValue(rdr, classFile);
					}
					return array;
				}
				default:
					throw new ClassFormatError("Invalid tag {0} in annotation element_value", tag);
			}
		}

			internal Field(ClassFile classFile, BigEndianBinaryReader br) : base(classFile, br)
			{
				if((IsPrivate && IsPublic) || (IsPrivate && IsProtected) || (IsPublic && IsProtected)
					|| (IsFinal && IsVolatile)
					|| (classFile.IsInterface && (!IsPublic || !IsStatic || !IsFinal || IsTransient)))
				{
					throw new ClassFormatError("{0} (Illegal field modifiers: 0x{1:X})", classFile.Name, access_flags);
				}
				int attributes_count = br.ReadUInt16();
				for(int i = 0; i < attributes_count; i++)
				{
					switch(classFile.GetConstantPoolUtf8String(br.ReadUInt16()))
					{
						case "Deprecated":
							if(br.ReadUInt32() != 0)
							{
								throw new ClassFormatError("Invalid Deprecated attribute length");
							}
							flags |= FLAG_MASK_DEPRECATED;
							break;
						case "ConstantValue":
						{
							if(br.ReadUInt32() != 2)
							{
								throw new ClassFormatError("Invalid ConstantValue attribute length");
							}
							ushort index = br.ReadUInt16();
							try
							{
								switch(Signature)
								{
									case "I":
										constantValue = classFile.GetConstantPoolConstantInteger(index);
										break;
									case "S":
										constantValue = (short)classFile.GetConstantPoolConstantInteger(index);
										break;
									case "B":
										constantValue = (byte)classFile.GetConstantPoolConstantInteger(index);
										break;
									case "C":
										constantValue = (char)classFile.GetConstantPoolConstantInteger(index);
										break;
									case "Z":
										constantValue = classFile.GetConstantPoolConstantInteger(index) != 0;
										break;
									case "J":
										constantValue = classFile.GetConstantPoolConstantLong(index);
										break;
									case "F":
										constantValue = classFile.GetConstantPoolConstantFloat(index);
										break;
									case "D":
										constantValue = classFile.GetConstantPoolConstantDouble(index);
										break;
									case "Ljava.lang.String;":
										constantValue = classFile.GetConstantPoolConstantString(index);
										break;
									default:
										throw new ClassFormatError("{0} (Invalid signature for constant)", classFile.Name);
								}
							}
							catch(InvalidCastException)
							{
								throw new ClassFormatError("{0} (Bad index into constant pool)", classFile.Name);
							}
							catch(IndexOutOfRangeException)
							{
								throw new ClassFormatError("{0} (Bad index into constant pool)", classFile.Name);
							}
							catch(InvalidOperationException)
							{
								throw new ClassFormatError("{0} (Bad index into constant pool)", classFile.Name);
							}
							catch(NullReferenceException)
							{
								throw new ClassFormatError("{0} (Bad index into constant pool)", classFile.Name);
							}
							break;
						}
						case "Signature":
							if(classFile.MajorVersion < 49)
							{
								goto default;
							}
							if(br.ReadUInt32() != 2)
							{
								throw new ClassFormatError("Signature attribute has incorrect length");
							}
							signature = classFile.GetConstantPoolUtf8String(br.ReadUInt16());
							break;
						case "RuntimeVisibleAnnotations":
							if(classFile.MajorVersion < 49)
							{
								goto default;
							}
							annotations = ReadAnnotations(br, classFile);
							break;
						case "RuntimeInvisibleAnnotations":
							if(classFile.MajorVersion < 49)
//.........这里部分代码省略.........

			internal Method(ClassFile classFile, ClassFileParseOptions options, BigEndianBinaryReader br) : base(classFile, br)
			{
				// vmspec 4.6 says that all flags, except ACC_STRICT are ignored on <clinit>
				if(ReferenceEquals(Name, StringConstants.CLINIT) && ReferenceEquals(Signature, StringConstants.SIG_VOID))
				{
					access_flags &= Modifiers.Strictfp;
					access_flags |= (Modifiers.Static | Modifiers.Private);
				}
				else
				{
					// LAMESPEC: vmspec 4.6 says that abstract methods can not be strictfp (and this makes sense), but
					// javac (pre 1.5) is broken and marks abstract methods as strictfp (if you put the strictfp on the class)
					if((ReferenceEquals(Name, StringConstants.INIT) && (IsStatic || IsSynchronized || IsFinal || IsAbstract || IsNative))
						|| (IsPrivate && IsPublic) || (IsPrivate && IsProtected) || (IsPublic && IsProtected)
						|| (IsAbstract && (IsFinal || IsNative || IsPrivate || IsStatic || IsSynchronized))
						|| (classFile.IsInterface && (!IsPublic || !IsAbstract)))
					{
						throw new ClassFormatError("{0} (Illegal method modifiers: 0x{1:X})", classFile.Name, access_flags);
					}
				}
				int attributes_count = br.ReadUInt16();
				for(int i = 0; i < attributes_count; i++)
				{
					switch(classFile.GetConstantPoolUtf8String(br.ReadUInt16()))
					{
						case "Deprecated":
							if(br.ReadUInt32() != 0)
							{
								throw new ClassFormatError("Invalid Deprecated attribute length");
							}
							flags |= FLAG_MASK_DEPRECATED;
							break;
						case "Code":
						{
							if(!code.IsEmpty)
							{
								throw new ClassFormatError("{0} (Duplicate Code attribute)", classFile.Name);
							}
							BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
							code.Read(classFile, this, rdr, options);
							if(!rdr.IsAtEnd)
							{
								throw new ClassFormatError("{0} (Code attribute has wrong length)", classFile.Name);
							}
							break;
						}
						case "Exceptions":
						{
							if(exceptions != null)
							{
								throw new ClassFormatError("{0} (Duplicate Exceptions attribute)", classFile.Name);
							}
							BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
							ushort count = rdr.ReadUInt16();
							exceptions = new string[count];
							for(int j = 0; j < count; j++)
							{
								exceptions[j] = classFile.GetConstantPoolClass(rdr.ReadUInt16());
							}
							if(!rdr.IsAtEnd)
							{
								throw new ClassFormatError("{0} (Exceptions attribute has wrong length)", classFile.Name);
							}
							break;
						}
						case "Signature":
							if(classFile.MajorVersion < 49)
							{
								goto default;
							}
							if(br.ReadUInt32() != 2)
							{
								throw new ClassFormatError("Signature attribute has incorrect length");
							}
							signature = classFile.GetConstantPoolUtf8String(br.ReadUInt16());
							break;
						case "RuntimeVisibleAnnotations":
							if(classFile.MajorVersion < 49)
							{
								goto default;
							}
							annotations = ReadAnnotations(br, classFile);
							break;
						case "RuntimeVisibleParameterAnnotations":
						{
							if(classFile.MajorVersion < 49)
							{
								goto default;
							}
							BigEndianBinaryReader rdr = br.Section(br.ReadUInt32());
							byte num_parameters = rdr.ReadByte();
							parameterAnnotations = new object[num_parameters][];
							for(int j = 0; j < num_parameters; j++)
							{
								ushort num_annotations = rdr.ReadUInt16();
								parameterAnnotations[j] = new object[num_annotations];
								for(int k = 0; k < num_annotations; k++)
								{
									parameterAnnotations[j][k] = ReadAnnotation(rdr, classFile);
								}
//.........这里部分代码省略.........

			internal FieldOrMethod(ClassFile classFile, BigEndianBinaryReader br)
			{
				access_flags = (Modifiers)br.ReadUInt16();
				name = String.Intern(classFile.GetConstantPoolUtf8String(br.ReadUInt16()));
				descriptor = classFile.GetConstantPoolUtf8String(br.ReadUInt16());
				ValidateSig(classFile, descriptor);
				descriptor = String.Intern(descriptor.Replace('/', '.'));
			}

			internal override void Resolve(ClassFile classFile)
			{
				s = classFile.GetConstantPoolUtf8String(string_index);
			}