org.apache.bcel.classfile
Class Code
java.lang.Object
  |
  +--org.apache.bcel.classfile.Attribute
        |
        +--org.apache.bcel.classfile.Code
- All Implemented Interfaces: 
- java.lang.Cloneable, Node, java.io.Serializable
- public final class Code- extends Attribute
This class represents a chunk of Java byte code contained in a
 method. It is instantiated by the
 Attribute.readAttribute() method. A Code
 attribute contains informations about operand stack, local
 variables, byte code and the exceptions handled within this
 method.
 This attribute has attributes itself, namely LineNumberTable which
 is used for debugging purposes and LocalVariableTable which 
 contains information about the local variables.
- Version:
- $Id: Code.java,v 1.2 2002/03/11 16:16:35 mdahm Exp $
- Author:
- M. Dahm
- See Also:
- Attribute,- CodeException,- LineNumberTable,- LocalVariableTable, 
Serialized Form
 
 
 
 
| Methods inherited from class org.apache.bcel.classfile.Attribute | 
| addAttributeReader, clone, getConstantPool, getLength, getNameIndex, getTag, readAttribute, removeAttributeReader, setConstantPool, setLength, setNameIndex | 
 
| Methods inherited from class java.lang.Object | 
| equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait | 
 
Code
public Code(Code c)
- Initialize from another object. Note that both objects use the same
 references (shallow copy). Use copy() for a physical copy.
 
Code
public Code(int name_index,
            int length,
            int max_stack,
            int max_locals,
            byte[] code,
            CodeException[] exception_table,
            Attribute[] attributes,
            ConstantPool constant_pool)
- Parameters:
- name_index- Index pointing to the name Code
- length- Content length in bytes
- max_stack- Maximum size of stack
- max_locals- Number of local variables
- code- Actual byte code
- exception_table- Table of handled exceptions
- attributes- Attributes of code: LineNumber or LocalVariable
- constant_pool- Array of constants
accept
public void accept(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.
 
- 
- Specified by:
- acceptin interface- Node
- Specified by:
- acceptin class- Attribute
 
- 
- Parameters:
- v- Visitor object
 
dump
public final void dump(java.io.DataOutputStream file)
                throws java.io.IOException
- Dump code attribute to file stream in binary format.
 
- 
- Overrides:
- dumpin class- Attribute
 
- 
- Parameters:
- file- Output file stream
- Throws:
- java.io.IOException
 
getAttributes
public final Attribute[] getAttributes()
- 
- Returns:
- Collection of code attributes.
- See Also:
- Attribute
 
getLineNumberTable
public LineNumberTable getLineNumberTable()
- 
- Returns:
- LineNumberTable of Code, if it has one
 
getLocalVariableTable
public LocalVariableTable getLocalVariableTable()
- 
- Returns:
- LocalVariableTable of Code, if it has one
 
getCode
public final byte[] getCode()
- 
- Returns:
- Actual byte code of the method.
 
getExceptionTable
public final CodeException[] getExceptionTable()
- 
- Returns:
- Table of handled exceptions.
- See Also:
- CodeException
 
getMaxLocals
public final int getMaxLocals()
- 
- Returns:
- Number of local variables.
 
getMaxStack
public final int getMaxStack()
- 
- Returns:
- Maximum size of stack used by this method.
 
setAttributes
public final void setAttributes(Attribute[] attributes)
- 
 
setCode
public final void setCode(byte[] code)
- 
- Parameters:
- code- byte code
 
setExceptionTable
public final void setExceptionTable(CodeException[] exception_table)
- 
- Parameters:
- exception_table- exception table
 
setMaxLocals
public final void setMaxLocals(int max_locals)
- 
- Parameters:
- max_locals- maximum number of local variables
 
setMaxStack
public final void setMaxStack(int max_stack)
- 
- Parameters:
- max_stack- maximum stack size
 
toString
public final java.lang.String toString(boolean verbose)
- 
- Returns:
- String representation of code chunk.
 
toString
public final java.lang.String toString()
- 
- Overrides:
- toStringin class- Attribute
 
- 
- Returns:
- String representation of code chunk.
 
copy
public Attribute copy(ConstantPool constant_pool)
- 
- Specified by:
- copyin class- Attribute
 
- 
- Returns:
- deep copy of this attribute
 
Copyright © 2002-2003 Apache Software Foundation. All Rights Reserved.