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/*
* ConstantPoolInfo.java
*
* Created on May 24, 2005, 4:43 PM
*
* To change this template, choose Tools | Options and locate the template under
* the Source Creation and Management node. Right-click the template and choose
* Open. You can then make changes to the template in the Source Editor.
*/
// Portions Copyright [2016] [Payara Foundation]
package com.sun.enterprise.deployment.annotation.introspection;
import com.sun.enterprise.deployment.util.DOLUtils;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
*
* @author dochez
*/
public class ConstantPoolInfo {
byte[] bytes = new byte[Short.MAX_VALUE];
private AnnotationScanner scanner = null;
public ConstantPoolInfo(AnnotationScanner scanner) {
this.scanner = scanner;
}
/**
* Read the input channel and initialize instance data
* structure.
* PAYARA-1010 updated for JDK 7 and 8 https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4
*/
public boolean containsAnnotation(int constantPoolSize, final ByteBuffer buffer) throws IOException {
for (int i=1;iShort.MAX_VALUE) {
return true;
}
buffer.get(bytes, 0, length);
/* to speed up the process, I am comparing the first few
* bytes to Ljava since all annotations are in the java
* package, the reduces dramatically the number or String
* construction
*/
if (bytes[0]=='L' && bytes[1]=='j' && bytes[2]=='a') {
String stringValue;
if (type==ASCIZ) {
stringValue = new String(bytes, 0, length,"US-ASCII");
} else {
stringValue = new String(bytes, 0, length);
}
if (scanner.isAnnotation(stringValue)) {
return true;
}
}
break;
case CLASS:
case STRING:
case METHOD_TYPE:
buffer.getShort();
break;
case FIELDREF:
case METHODREF:
case INTERFACEMETHODREF:
case INTEGER:
case FLOAT:
buffer.position(buffer.position()+4);
break;
case LONG:
case DOUBLE:
buffer.position(buffer.position()+8);
// for long, and double, they use 2 constantPool
i++;
break;
case NAMEANDTYPE:
case INVOKE_DYNAMIC:
buffer.getShort();
buffer.getShort();
break;
case METHOD_HANDLE:
buffer.get();
buffer.getShort();
break;
default:
DOLUtils.getDefaultLogger().severe("Unknown type constant pool " + type + " at position" + i);
break;
}
}
return false;
}
public static final byte CLASS = 7;
public static final int FIELDREF = 9;
public static final int METHODREF = 10;
public static final int STRING = 8;
public static final int INTEGER = 3;
public static final int FLOAT = 4;
public static final int LONG = 5;
public static final int DOUBLE = 6;
public static final int INTERFACEMETHODREF = 11;
public static final int NAMEANDTYPE = 12;
public static final int ASCIZ = 1;
public static final int UNICODE = 2;
public static final int METHOD_HANDLE=15;
public static final int METHOD_TYPE=16;
public static final int INVOKE_DYNAMIC=18;
}