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src/java.xml/share/classes/com/sun/org/apache/bcel/internal/generic/FieldGen.java
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@@ -15,262 +15,347 @@
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
-
package com.sun.org.apache.bcel.internal.generic;
-
-import com.sun.org.apache.bcel.internal.Constants;
-import com.sun.org.apache.bcel.internal.classfile.*;
import java.util.ArrayList;
-import java.util.Iterator;
+import java.util.List;
+
+import com.sun.org.apache.bcel.internal.Const;
+import com.sun.org.apache.bcel.internal.classfile.AnnotationEntry;
+import com.sun.org.apache.bcel.internal.classfile.Annotations;
+import com.sun.org.apache.bcel.internal.classfile.Attribute;
+import com.sun.org.apache.bcel.internal.classfile.Constant;
+import com.sun.org.apache.bcel.internal.classfile.ConstantObject;
+import com.sun.org.apache.bcel.internal.classfile.ConstantPool;
+import com.sun.org.apache.bcel.internal.classfile.ConstantValue;
+import com.sun.org.apache.bcel.internal.classfile.Field;
+import com.sun.org.apache.bcel.internal.classfile.Utility;
+import com.sun.org.apache.bcel.internal.util.BCELComparator;
/**
- * Template class for building up a field. The only extraordinary thing
- * one can do is to add a constant value attribute to a field (which must of
- * course be compatible with to the declared type).
+ * Template class for building up a field. The only extraordinary thing one can
+ * do is to add a constant value attribute to a field (which must of course be
+ * compatible with to the declared type).
*
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
+ * @version $Id: FieldGen.java 1749603 2016-06-21 20:50:19Z ggregory $
* @see Field
*/
public class FieldGen extends FieldGenOrMethodGen {
+
private Object value = null;
+ private static BCELComparator bcelComparator = new BCELComparator() {
+
+ @Override
+ public boolean equals(final Object o1, final Object o2) {
+ final FieldGen THIS = (FieldGen) o1;
+ final FieldGen THAT = (FieldGen) o2;
+ return THIS.getName().equals(THAT.getName())
+ && THIS.getSignature().equals(THAT.getSignature());
+ }
+
+ @Override
+ public int hashCode(final Object o) {
+ final FieldGen THIS = (FieldGen) o;
+ return THIS.getSignature().hashCode() ^ THIS.getName().hashCode();
+ }
+ };
/**
- * Declare a field. If it is static (isStatic() == true) and has a
- * basic type like int or String it may have an initial value
- * associated with it as defined by setInitValue().
+ * Declare a field. If it is static (isStatic() == true) and has a basic
+ * type like int or String it may have an initial value associated with it
+ * as defined by setInitValue().
*
* @param access_flags access qualifiers
* @param type field type
* @param name field name
* @param cp constant pool
*/
- public FieldGen(int access_flags, Type type, String name, ConstantPoolGen cp) {
- setAccessFlags(access_flags);
+ public FieldGen(final int access_flags, final Type type, final String name, final ConstantPoolGen cp) {
+ super(access_flags);
setType(type);
setName(name);
setConstantPool(cp);
}
/**
* Instantiate from existing field.
*
* @param field Field object
- * @param cp constant pool (must contain the same entries as the field's constant pool)
+ * @param cp constant pool (must contain the same entries as the field's
+ * constant pool)
*/
- public FieldGen(Field field, ConstantPoolGen cp) {
+ public FieldGen(final Field field, final ConstantPoolGen cp) {
this(field.getAccessFlags(), Type.getType(field.getSignature()), field.getName(), cp);
-
- Attribute[] attrs = field.getAttributes();
-
- for(int i=0; i < attrs.length; i++) {
- if(attrs[i] instanceof ConstantValue)
- setValue(((ConstantValue)attrs[i]).getConstantValueIndex());
- else
- addAttribute(attrs[i]);
+ final Attribute[] attrs = field.getAttributes();
+ for (final Attribute attr : attrs) {
+ if (attr instanceof ConstantValue) {
+ setValue(((ConstantValue) attr).getConstantValueIndex());
+ } else if (attr instanceof Annotations) {
+ final Annotations runtimeAnnotations = (Annotations) attr;
+ final AnnotationEntry[] annotationEntries = runtimeAnnotations.getAnnotationEntries();
+ for (final AnnotationEntry element : annotationEntries) {
+ addAnnotationEntry(new AnnotationEntryGen(element, cp, false));
+ }
+ } else {
+ addAttribute(attr);
+ }
}
}
- private void setValue(int index) {
- ConstantPool cp = this.cp.getConstantPool();
- Constant c = cp.getConstant(index);
- value = ((ConstantObject)c).getConstantValue(cp);
+ private void setValue(final int index) {
+ final ConstantPool cp = super.getConstantPool().getConstantPool();
+ final Constant c = cp.getConstant(index);
+ value = ((ConstantObject) c).getConstantValue(cp);
}
/**
- * Set (optional) initial value of field, otherwise it will be set to null/0/false
- * by the JVM automatically.
+ * Set (optional) initial value of field, otherwise it will be set to
+ * null/0/false by the JVM automatically.
*/
- public void setInitValue(String str) {
- checkType(new ObjectType("java.lang.String"));
-
- if(str != null)
+ public void setInitValue(final String str) {
+ checkType(ObjectType.getInstance("java.lang.String"));
+ if (str != null) {
value = str;
}
+ }
- public void setInitValue(long l) {
+ public void setInitValue(final long l) {
checkType(Type.LONG);
-
- if(l != 0L)
- value = Long.valueOf(l);
+ if (l != 0L) {
+ value = l;
+ }
}
- public void setInitValue(int i) {
+ public void setInitValue(final int i) {
checkType(Type.INT);
-
- if(i != 0)
- value = Integer.valueOf(i);
+ if (i != 0) {
+ value = i;
+ }
}
- public void setInitValue(short s) {
+ public void setInitValue(final short s) {
checkType(Type.SHORT);
-
- if(s != 0)
- value = Integer.valueOf(s);
+ if (s != 0) {
+ value = (int) s;
+ }
}
- public void setInitValue(char c) {
+ public void setInitValue(final char c) {
checkType(Type.CHAR);
-
- if(c != 0)
- value = Integer.valueOf(c);
+ if (c != 0) {
+ value = (int) c;
+ }
}
- public void setInitValue(byte b) {
+ public void setInitValue(final byte b) {
checkType(Type.BYTE);
-
- if(b != 0)
- value = Integer.valueOf(b);
+ if (b != 0) {
+ value = (int) b;
+ }
}
- public void setInitValue(boolean b) {
+ public void setInitValue(final boolean b) {
checkType(Type.BOOLEAN);
-
- if(b)
- value = Integer.valueOf(1);
+ if (b) {
+ value = 1;
+ }
}
- public void setInitValue(float f) {
+ public void setInitValue(final float f) {
checkType(Type.FLOAT);
-
- if(f != 0.0)
- value = Float.valueOf(f);
+ if (f != 0.0) {
+ value = f;
+ }
}
- public void setInitValue(double d) {
+ public void setInitValue(final double d) {
checkType(Type.DOUBLE);
-
- if(d != 0.0)
- value = Double.valueOf(d);
+ if (d != 0.0) {
+ value = d;
+ }
}
- /** Remove any initial value.
+ /**
+ * Remove any initial value.
*/
public void cancelInitValue() {
value = null;
}
- private void checkType(Type atype) {
- if(type == null)
+ private void checkType(final Type atype) {
+ final Type superType = super.getType();
+ if (superType == null) {
throw new ClassGenException("You haven't defined the type of the field yet");
-
- if(!isFinal())
+ }
+ if (!isFinal()) {
throw new ClassGenException("Only final fields may have an initial value!");
-
- if(!type.equals(atype))
- throw new ClassGenException("Types are not compatible: " + type + " vs. " + atype);
+ }
+ if (!superType.equals(atype)) {
+ throw new ClassGenException("Types are not compatible: " + superType + " vs. " + atype);
+ }
}
/**
* Get field object after having set up all necessary values.
*/
public Field getField() {
- String signature = getSignature();
- int name_index = cp.addUtf8(name);
- int signature_index = cp.addUtf8(signature);
-
- if(value != null) {
- checkType(type);
- int index = addConstant();
- addAttribute(new ConstantValue(cp.addUtf8("ConstantValue"),
- 2, index, cp.getConstantPool()));
+ final String signature = getSignature();
+ final int name_index = super.getConstantPool().addUtf8(super.getName());
+ final int signature_index = super.getConstantPool().addUtf8(signature);
+ if (value != null) {
+ checkType(super.getType());
+ final int index = addConstant();
+ addAttribute(new ConstantValue(super.getConstantPool().addUtf8("ConstantValue"), 2, index,
+ super.getConstantPool().getConstantPool())); // sic
+ }
+ addAnnotationsAsAttribute(super.getConstantPool());
+ return new Field(super.getAccessFlags(), name_index, signature_index, getAttributes(),
+ super.getConstantPool().getConstantPool()); // sic
+ }
+
+ private void addAnnotationsAsAttribute(final ConstantPoolGen cp) {
+ final Attribute[] attrs = AnnotationEntryGen.getAnnotationAttributes(cp, super.getAnnotationEntries());
+ for (final Attribute attr : attrs) {
+ addAttribute(attr);
}
-
- return new Field(access_flags, name_index, signature_index, getAttributes(),
- cp.getConstantPool());
}
private int addConstant() {
- switch(type.getType()) {
- case Constants.T_INT: case Constants.T_CHAR: case Constants.T_BYTE:
- case Constants.T_BOOLEAN: case Constants.T_SHORT:
- return cp.addInteger(((Integer)value).intValue());
-
- case Constants.T_FLOAT:
- return cp.addFloat(((Float)value).floatValue());
-
- case Constants.T_DOUBLE:
- return cp.addDouble(((Double)value).doubleValue());
-
- case Constants.T_LONG:
- return cp.addLong(((Long)value).longValue());
-
- case Constants.T_REFERENCE:
- return cp.addString(((String)value));
-
+ switch (super.getType().getType()) { // sic
+ case Const.T_INT:
+ case Const.T_CHAR:
+ case Const.T_BYTE:
+ case Const.T_BOOLEAN:
+ case Const.T_SHORT:
+ return super.getConstantPool().addInteger(((Integer) value));
+ case Const.T_FLOAT:
+ return super.getConstantPool().addFloat(((Float) value));
+ case Const.T_DOUBLE:
+ return super.getConstantPool().addDouble(((Double) value));
+ case Const.T_LONG:
+ return super.getConstantPool().addLong(((Long) value));
+ case Const.T_REFERENCE:
+ return super.getConstantPool().addString((String) value);
default:
- throw new RuntimeException("Oops: Unhandled : " + type.getType());
+ throw new RuntimeException("Oops: Unhandled : " + super.getType().getType()); // sic
}
}
- public String getSignature() { return type.getSignature(); }
+ @Override
+ public String getSignature() {
+ return super.getType().getSignature();
+ }
- private ArrayList observers;
+ private List<FieldObserver> observers;
- /** Add observer for this object.
+ /**
+ * Add observer for this object.
*/
- public void addObserver(FieldObserver o) {
- if(observers == null)
- observers = new ArrayList();
-
+ public void addObserver(final FieldObserver o) {
+ if (observers == null) {
+ observers = new ArrayList<>();
+ }
observers.add(o);
}
- /** Remove observer for this object.
+ /**
+ * Remove observer for this object.
*/
- public void removeObserver(FieldObserver o) {
- if(observers != null)
+ public void removeObserver(final FieldObserver o) {
+ if (observers != null) {
observers.remove(o);
}
+ }
- /** Call notify() method on all observers. This method is not called
- * automatically whenever the state has changed, but has to be
- * called by the user after he has finished editing the object.
+ /**
+ * Call notify() method on all observers. This method is not called
+ * automatically whenever the state has changed, but has to be called by the
+ * user after he has finished editing the object.
*/
public void update() {
- if(observers != null)
- for(Iterator e = observers.iterator(); e.hasNext(); )
- ((FieldObserver)e.next()).notify(this);
+ if (observers != null) {
+ for (final FieldObserver observer : observers) {
+ observer.notify(this);
+ }
+ }
}
public String getInitValue() {
- if(value != null) {
+ if (value != null) {
return value.toString();
- } else
+ }
return null;
}
/**
- * Return string representation close to declaration format,
- * `public static final short MAX = 100', e.g..
+ * Return string representation close to declaration format, `public static
+ * final short MAX = 100', e.g..
*
* @return String representation of field
*/
+ @Override
public final String toString() {
- String name, signature, access; // Short cuts to constant pool
-
- access = Utility.accessToString(access_flags);
- access = access.equals("")? "" : (access + " ");
- signature = type.toString();
+ String name;
+ String signature;
+ String access; // Short cuts to constant pool
+ access = Utility.accessToString(super.getAccessFlags());
+ access = access.isEmpty() ? "" : (access + " ");
+ signature = super.getType().toString();
name = getName();
+ final StringBuilder buf = new StringBuilder(32); // CHECKSTYLE IGNORE MagicNumber
+ buf.append(access).append(signature).append(" ").append(name);
+ final String value = getInitValue();
+ if (value != null) {
+ buf.append(" = ").append(value);
+ }
+ return buf.toString();
+ }
- StringBuffer buf = new StringBuffer(access + signature + " " + name);
- String value = getInitValue();
+ /**
+ * @return deep copy of this field
+ */
+ public FieldGen copy(final ConstantPoolGen cp) {
+ final FieldGen fg = (FieldGen) clone();
+ fg.setConstantPool(cp);
+ return fg;
+ }
- if(value != null)
- buf.append(" = " + value);
+ /**
+ * @return Comparison strategy object
+ */
+ public static BCELComparator getComparator() {
+ return bcelComparator;
+ }
- return buf.toString();
+ /**
+ * @param comparator Comparison strategy object
+ */
+ public static void setComparator(final BCELComparator comparator) {
+ bcelComparator = comparator;
}
- /** @return deep copy of this field
+ /**
+ * Return value as defined by given BCELComparator strategy. By default two
+ * FieldGen objects are said to be equal when their names and signatures are
+ * equal.
+ *
+ * @see java.lang.Object#equals(java.lang.Object)
*/
- public FieldGen copy(ConstantPoolGen cp) {
- FieldGen fg = (FieldGen)clone();
+ @Override
+ public boolean equals(final Object obj) {
+ return bcelComparator.equals(this, obj);
+ }
- fg.setConstantPool(cp);
- return fg;
+ /**
+ * Return value as defined by given BCELComparator strategy. By default
+ * return the hashcode of the field's name XOR signature.
+ *
+ * @see java.lang.Object#hashCode()
+ */
+ @Override
+ public int hashCode() {
+ return bcelComparator.hashCode(this);
}
}
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