added dropInfo

git-svn-id: https://svn.code.sf.net/p/jode/code/trunk@1200 379699f6-c40d-0410-875b-85095c16579e

jode/jode/bytecode/BinaryInfo.java.in

@@ -150,6 +150,11 @@ public class BinaryInfo {
 	}
     }
 
+    public void dropInfo(int howMuch) {
+	if ((howMuch & UNKNOWNATTRIBS) != 0)
+	    unknownAttributes = null;
+    }
+
     protected void prepareAttributes(GrowableConstantPool gcp) {
 	if (unknownAttributes == null)
 	    return;

jode/jode/bytecode/BytecodeInfo.java.in

@@ -1420,6 +1420,14 @@ public class BytecodeInfo extends BinaryInfo implements Opcodes {
 	writeAttributes(gcp, output);
     }
 
+    public void dropInfo(int howMuch) {
+	if ((howMuch & KNOWNATTRIBS) != 0) {
+	    lvt = null;
+	    lnt = null;
+	}
+	super.dropInfo(howMuch);
+    }
+
     public int getSize() {
 	/* maxStack:    2
 	 * maxLocals:   2

jode/jode/bytecode/ClassInfo.java.in

@@ -643,6 +643,51 @@ public class ClassInfo extends BinaryInfo {
         }
     }
 
+    /** 
+     * This is the counter part to loadInfo.  It will drop all info specified
+     * in howMuch and clean up the memory.
+     * @param howMuch tells how much info we should drop
+     */
+    public void dropInfo(int howMuch) {
+	if ((status & howMuch) == 0)
+	    return;
+	if (modified) {
+	    System.err.println("Dropping info 0x"
+			       + Integer.toHexString(howMuch)
+			       + " (status 0x" + Integer.toHexString(status)
+			       + ") in class " + this);
+	    Thread.dumpStack();
+	    return;
+	}
+	howMuch &= status;
+
+	if ((howMuch & FIELDS) != 0) {
+	    fields = null;
+	} else if ((status & FIELDS) != 0
+		   && (howMuch & (KNOWNATTRIBS | UNKNOWNATTRIBS)) != 0) {
+	    for (int i=0; i < fields.length; i++)
+		fields[i].dropInfo(howMuch);
+	}
+
+	if ((howMuch & METHODS) != 0) {
+	    methods = null;
+	} else if ((status & METHODS) != 0
+		   && (howMuch & (KNOWNATTRIBS | UNKNOWNATTRIBS)) != 0) {
+	    for (int i=0; i < methods.length; i++)
+		methods[i].dropInfo(howMuch);
+	}
+	if ((howMuch & KNOWNATTRIBS) != 0)
+	    sourceFile = null;
+	if ((howMuch & OUTERCLASSES) != 0)
+	    outerClasses = null;
+	if ((howMuch & INNERCLASSES) != 0) {
+	    innerClasses = null;
+	    extraClasses = null;
+	}
+	super.dropInfo(howMuch);
+	status &= ~howMuch;
+    }
+
     public String getName() {
         return name;
     }

jode/jode/bytecode/FieldInfo.java

@@ -140,6 +140,12 @@ public class FieldInfo extends BinaryInfo {
         writeAttributes(constantPool, output);
     }
 
+    public void dropInfo(int howMuch) {
+	if ((howMuch & KNOWNATTRIBS) != 0)
+	    constant = null;
+	super.dropInfo(howMuch);
+    }
+
     public String getName() {
         return name;
     }

jode/jode/bytecode/MethodInfo.java

@@ -156,6 +156,16 @@ public class MethodInfo extends BinaryInfo {
         writeAttributes(constantPool, output);
     }
 
+    public void dropInfo(int howMuch) {
+	if ((howMuch & KNOWNATTRIBS) != 0) {
+	    bytecode = null;
+	    exceptions = null;
+	}
+	if (bytecode != null) 
+	    bytecode.dropInfo(howMuch);
+	super.dropInfo(howMuch);
+    }
+
     public ClassInfo getClazzInfo() {
 	return clazzInfo;
     }