File	Doc	Category	Size	Date	Package
ConstantValue.java	API Doc	Java SE 5 API	7238	Fri Aug 26 14:55:16 BST 2005	com.sun.org.apache.bcel.internal.classfile

ConstantValue

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

Fields Summary
private int	constantvalue_index

Constructors Summary
public ConstantValue(ConstantValue 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.getConstantValueIndex(), c.getConstantPool());
ConstantValue(int name_index, int length, DataInputStream file, ConstantPool constant_pool) Construct object from file stream. param name_index Name index in constant pool param length Content length in bytes param file Input stream param constant_pool Array of constants throw IOException this(name_index, length, (int)file.readUnsignedShort(), constant_pool);
public ConstantValue(int name_index, int length, int constantvalue_index, ConstantPool constant_pool) param name_index Name index in constant pool param length Content length in bytes param constantvalue_index Index in constant pool param constant_pool Array of constants super(Constants.ATTR_CONSTANT_VALUE, name_index, length, constant_pool); this.constantvalue_index = constantvalue_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 v.visitConstantValue(this);
private static final java.lang.String	convertString(java.lang.String label) Escape all occurences of newline chars '\n', quotes \", etc. char[] ch = label.toCharArray(); StringBuffer buf = new StringBuffer(); for(int i=0; i < ch.length; i++) { switch(ch[i]) { case '\n": buf.append("\\n"); break; case '\r": buf.append("\\r"); break; case '\"": buf.append("\\\""); break; case '\'": buf.append("\\'"); break; case '\\": buf.append("\\\\"); break; default: buf.append(ch[i]); break; } } return buf.toString();
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 ConstantValue c = (ConstantValue)clone(); c.constant_pool = constant_pool; return c;
public final void	dump(java.io.DataOutputStream file) Dump constant value attribute to file stream on binary format. param file Output file stream throw IOException super.dump(file); file.writeShort(constantvalue_index);
public final int	getConstantValueIndex() return Index in constant pool of constant value. return constantvalue_index;
public final void	setConstantValueIndex(int constantvalue_index) param constantvalue_index. this.constantvalue_index = constantvalue_index;
public final java.lang.String	toString() return String representation of constant value. Constant c = constant_pool.getConstant(constantvalue_index); String buf; int i; // Print constant to string depending on its type switch(c.getTag()) { case Constants.CONSTANT_Long: buf = "" + ((ConstantLong)c).getBytes(); break; case Constants.CONSTANT_Float: buf = "" + ((ConstantFloat)c).getBytes(); break; case Constants.CONSTANT_Double: buf = "" + ((ConstantDouble)c).getBytes(); break; case Constants.CONSTANT_Integer: buf = "" + ((ConstantInteger)c).getBytes(); break; case Constants.CONSTANT_String: i = ((ConstantString)c).getStringIndex(); c = constant_pool.getConstant(i, Constants.CONSTANT_Utf8); buf = "\"" + convertString(((ConstantUtf8)c).getBytes()) + "\""; break; default: throw new InternalError("Type of ConstValue invalid: " + c); } return buf;