wcrisman/Brainstorm
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Initial commit from SVN.

Browse Source
This commit is contained in:
wcrisman
2014-05-30 10:31:51 -07:00
commit b45e56b890
1968 changed files with 370949 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

111
Class File Services/src/com/de22/javabytecode/Constant.java Normal file
View File

@@ -0,0 +1,111 @@
package com.de22.javabytecode;
import java.io.IOException;
import com.common.debug.*;
import com.de22.javabytecode.constant.*;
/**
* Copyright Wynne Crisman 1999,2006<p>
*/
public abstract class Constant extends Component {
public static final byte CONSTANT_UTF8 = 0x01;
public static final byte CONSTANT_INTEGER = 0x03;
public static final byte CONSTANT_FLOAT = 0x04;
public static final byte CONSTANT_LONG = 0x05;
public static final byte CONSTANT_DOUBLE = 0x06;
public static final byte CONSTANT_CLASS = 0x07;
public static final byte CONSTANT_STRING = 0x08;
public static final byte CONSTANT_FIELD_REF = 0x09;
public static final byte CONSTANT_METHOD_REF = 0x0A;
public static final byte CONSTANT_INTERFACE_METHOD_REF = 0x0B;
public static final byte CONSTANT_NAME_AND_TYPE = 0x0C;
/**
* Constant constructor.
*/
public Constant(Type type) {
super(type);
}//Constant()//
/**
* Gets this constant's identifying constant.
* @return The constant value that identifies this constant object type.
*/
public abstract byte getTag();
/**
* Gets a display string that shows the resulting value of the constant in a viewer friendly way.
* @return The viewer friendly constant result.
*/
public abstract String getPrettyValue();
/**
* Determines whether the constant takes double the constant entries in the class bytes.
* @return Whether the constant is a double size constant.
*/
public boolean isDoubleSize() {
return false;
}//isDoubleSize()//
/**
* Reads a constant from the given stream.
* @param type The type object that the constant will belong to.
* @param in The input stream to read the constant from.
*/
protected static Constant readConstant(Type type, java.io.ObjectInput in) throws java.io.IOException, ClassNotFoundException {
Constant constant = null;
short tag = in.readByte();
switch(tag) {
case CONSTANT_CLASS:
constant = new ConstantType(type);
break;
case CONSTANT_DOUBLE:
constant = new ConstantDouble(type);
break;
case CONSTANT_FIELD_REF:
constant = new ConstantFieldRef(type);
break;
case CONSTANT_FLOAT:
constant = new ConstantFloat(type);
break;
case CONSTANT_INTEGER:
constant = new ConstantInteger(type);
break;
case CONSTANT_INTERFACE_METHOD_REF:
constant = new ConstantInterfaceMethodRef(type);
break;
case CONSTANT_LONG:
constant = new ConstantLong(type);
break;
case CONSTANT_METHOD_REF:
constant = new ConstantMethodRef(type);
break;
case CONSTANT_NAME_AND_TYPE:
constant = new ConstantNameAndType(type);
break;
case CONSTANT_STRING:
constant = new ConstantString(type);
break;
case CONSTANT_UTF8:
constant = new ConstantUtf8(type);
break;
default:
Debug.halt();
break;
}//switch//
constant.readExternal(in);
return constant;
}//readConstant()//
/**
* Reads this object from the given stream.
* @param in The input stream to read this object from.
*/
public void readExternal(java.io.ObjectInput in) throws IOException, ClassNotFoundException {
//The tag will be read by the readConstant(Type, ObjectInput) method.//
}//readExternal()//
/**
* Writes this object to the given stream.
* @param out The output stream to write this object to.
*/
public void writeExternal(java.io.ObjectOutput out) throws IOException {
out.writeByte(getTag());
}//writeExternal()//
}//Constant//