File	Doc	Category	Size	Date	Package
Signature.java	API Doc	Java SE 5 API	9215	Fri Aug 26 14:55:18 BST 2005	com.sun.org.apache.bcel.internal.classfile

Signature

• java.lang.Object
  • com.sun.org.apache.bcel.internal.classfile.Attribute

Fields Summary
private int	signature_index

Constructors Summary
public Signature(Signature c) Initialize from another object. Note that both objects use the same references (shallow copy). Use clone() for a physical copy. this(c.getNameIndex(), c.getLength(), c.getSignatureIndex(), c.getConstantPool());
Signature(int name_index, int length, DataInputStream file, ConstantPool constant_pool) Construct object from file stream. param name_index Index in constant pool to CONSTANT_Utf8 param length Content length in bytes param file Input stream param constant_pool Array of constants throw IOException this(name_index, length, file.readUnsignedShort(), constant_pool);
public Signature(int name_index, int length, int signature_index, ConstantPool constant_pool) param name_index Index in constant pool to CONSTANT_Utf8 param length Content length in bytes param constant_pool Array of constants param Signature_index Index in constant pool to CONSTANT_Utf8 super(Constants.ATTR_SIGNATURE, name_index, length, constant_pool); this.signature_index = signature_index;

Methods Summary
public void	accept(com.sun.org.apache.bcel.internal.classfile.Visitor v) Called by objects that are traversing the nodes of the tree implicitely defined by the contents of a Java class. I.e., the hierarchy of methods, fields, attributes, etc. spawns a tree of objects. param v Visitor object System.err.println("Visiting non-standard Signature object");
public com.sun.org.apache.bcel.internal.classfile.Attribute	copy(com.sun.org.apache.bcel.internal.classfile.ConstantPool constant_pool) return deep copy of this attribute return (Signature)clone();
public final void	dump(java.io.DataOutputStream file) Dump source file attribute to file stream in binary format. param file Output file stream throw IOException super.dump(file); file.writeShort(signature_index);
public final java.lang.String	getSignature() return GJ signature. ConstantUtf8 c = (ConstantUtf8)constant_pool.getConstant(signature_index, Constants.CONSTANT_Utf8); return c.getBytes();
public final int	getSignatureIndex() return Index in constant pool of source file name. return signature_index;
private static boolean	identPart(int ch) return ch == '/" || ch == ';";
private static boolean	identStart(int ch) return ch == 'T" || ch == 'L";
public static final boolean	isActualParameterList(java.lang.String s) return s.startsWith("L") && s.endsWith(">;");
public static final boolean	isFormalParameterList(java.lang.String s) return s.startsWith("<") && (s.indexOf(':") > 0);
private static final void	matchGJIdent(com.sun.org.apache.bcel.internal.classfile.Signature$MyByteArrayInputStream in, java.lang.StringBuffer buf) int ch; matchIdent(in, buf); ch = in.read(); if((ch == '<") || ch == '(") { // Parameterized or method //System.out.println("Enter <"); buf.append((char)ch); matchGJIdent(in, buf); while(((ch = in.read()) != '>") && (ch != ')")) { // List of parameters if(ch == -1) throw new RuntimeException("Illegal signature: " + in.getData() + " reaching EOF"); //System.out.println("Still no >"); buf.append(", "); in.unread(); matchGJIdent(in, buf); // Recursive call } //System.out.println("Exit >"); buf.append((char)ch); } else in.unread(); ch = in.read(); if(identStart(ch)) { in.unread(); matchGJIdent(in, buf); } else if(ch == ')") { in.unread(); return; } else if(ch != ';") throw new RuntimeException("Illegal signature: " + in.getData() + " read " + (char)ch);
private static final void	matchIdent(com.sun.org.apache.bcel.internal.classfile.Signature$MyByteArrayInputStream in, java.lang.StringBuffer buf) int ch; if((ch = in.read()) == -1) throw new RuntimeException("Illegal signature: " + in.getData() + " no ident, reaching EOF"); //System.out.println("return from ident:" + (char)ch); if(!identStart(ch)) { StringBuffer buf2 = new StringBuffer(); int count = 1; while(Character.isJavaIdentifierPart((char)ch)) { buf2.append((char)ch); count++; ch = in.read(); } if(ch == ':") { // Ok, formal parameter in.skip("Ljava/lang/Object".length()); buf.append(buf2); ch = in.read(); in.unread(); //System.out.println("so far:" + buf2 + ":next:" +(char)ch); } else { for(int i=0; i < count; i++) in.unread(); } return; } StringBuffer buf2 = new StringBuffer(); ch = in.read(); do { buf2.append((char)ch); ch = in.read(); //System.out.println("within ident:"+ (char)ch); } while((ch != -1) && (Character.isJavaIdentifierPart((char)ch) || (ch == '/"))); buf.append(buf2.toString().replace('/", '.")); //System.out.println("regular return ident:"+ (char)ch + ":" + buf2); if(ch != -1) in.unread();
public final void	setSignatureIndex(int signature_index) param Signature_index. this.signature_index = signature_index;
public final java.lang.String	toString() return String representation String s = getSignature(); return "Signature(" + s + ")";
public static java.lang.String	translate(java.lang.String s) //System.out.println("Sig:" + s); StringBuffer buf = new StringBuffer(); matchGJIdent(new MyByteArrayInputStream(s), buf); return buf.toString();