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src/java.xml/share/classes/com/sun/org/apache/bcel/internal/classfile/Field.java
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@@ -19,114 +19,185 @@
* limitations under the License.
*/
package com.sun.org.apache.bcel.internal.classfile;
-import com.sun.org.apache.bcel.internal.Constants;
+import java.io.DataInput;
+import java.io.IOException;
+
+import com.sun.org.apache.bcel.internal.Const;
import com.sun.org.apache.bcel.internal.generic.Type;
-import java.io.*;
+import com.sun.org.apache.bcel.internal.util.BCELComparator;
/**
* This class represents the field info structure, i.e., the representation
* for a variable in the class. See JVM specification for details.
*
- * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
+ * @version $Id: Field.java 1749603 2016-06-21 20:50:19Z ggregory $
*/
public final class Field extends FieldOrMethod {
+
+ private static BCELComparator bcelComparator = new BCELComparator() {
+
+ @Override
+ public boolean equals( final Object o1, final Object o2 ) {
+ final Field THIS = (Field) o1;
+ final Field THAT = (Field) o2;
+ return THIS.getName().equals(THAT.getName())
+ && THIS.getSignature().equals(THAT.getSignature());
+ }
+
+
+ @Override
+ public int hashCode( final Object o ) {
+ final Field THIS = (Field) o;
+ return THIS.getSignature().hashCode() ^ THIS.getName().hashCode();
+ }
+ };
+
+
/**
* Initialize from another object. Note that both objects use the same
* references (shallow copy). Use clone() for a physical copy.
*/
- public Field(Field c) {
+ public Field(final Field c) {
super(c);
}
+
/**
* Construct object from file stream.
* @param file Input stream
*/
- Field(DataInputStream file, ConstantPool constant_pool)
- throws IOException, ClassFormatException
- {
+ Field(final DataInput file, final ConstantPool constant_pool) throws IOException,
+ ClassFormatException {
super(file, constant_pool);
}
+
/**
* @param access_flags Access rights of field
* @param name_index Points to field name in constant pool
* @param signature_index Points to encoded signature
* @param attributes Collection of attributes
* @param constant_pool Array of constants
*/
- public Field(int access_flags, int name_index, int signature_index,
- Attribute[] attributes, ConstantPool constant_pool)
- {
+ public Field(final int access_flags, final int name_index, final int signature_index, final Attribute[] attributes,
+ final ConstantPool constant_pool) {
super(access_flags, name_index, signature_index, attributes, constant_pool);
}
+
/**
* 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.
*
* @param v Visitor object
*/
- public void accept(Visitor v) {
+ @Override
+ public void accept( final Visitor v ) {
v.visitField(this);
}
+
/**
* @return constant value associated with this field (may be null)
*/
public final ConstantValue getConstantValue() {
- for(int i=0; i < attributes_count; i++)
- if(attributes[i].getTag() == Constants.ATTR_CONSTANT_VALUE)
- return (ConstantValue)attributes[i];
-
+ for (final Attribute attribute : super.getAttributes()) {
+ if (attribute.getTag() == Const.ATTR_CONSTANT_VALUE) {
+ return (ConstantValue) attribute;
+ }
+ }
return null;
}
+
/**
* Return string representation close to declaration format,
* `public static final short MAX = 100', e.g..
*
* @return String representation of field, including the signature.
*/
+ @Override
public final String toString() {
- String name, signature, access; // Short cuts to constant pool
+ String name;
+ String signature;
+ String access; // Short cuts to constant pool
// Get names from constant pool
- access = Utility.accessToString(access_flags);
- access = access.equals("")? "" : (access + " ");
+ access = Utility.accessToString(super.getAccessFlags());
+ access = access.isEmpty() ? "" : (access + " ");
signature = Utility.signatureToString(getSignature());
name = getName();
-
- StringBuffer buf = new StringBuffer(access + signature + " " + name);
- ConstantValue cv = getConstantValue();
-
- if(cv != null)
- buf.append(" = " + cv);
-
- for(int i=0; i < attributes_count; i++) {
- Attribute a = attributes[i];
-
- if(!(a instanceof ConstantValue))
- buf.append(" [" + a.toString() + "]");
+ final StringBuilder buf = new StringBuilder(64); // CHECKSTYLE IGNORE MagicNumber
+ buf.append(access).append(signature).append(" ").append(name);
+ final ConstantValue cv = getConstantValue();
+ if (cv != null) {
+ buf.append(" = ").append(cv);
+ }
+ for (final Attribute attribute : super.getAttributes()) {
+ if (!(attribute instanceof ConstantValue)) {
+ buf.append(" [").append(attribute).append("]");
+ }
}
-
return buf.toString();
}
+
/**
* @return deep copy of this field
*/
- public final Field copy(ConstantPool constant_pool) {
- return (Field)copy_(constant_pool);
+ public final Field copy( final ConstantPool _constant_pool ) {
+ return (Field) copy_(_constant_pool);
}
+
/**
* @return type of field
*/
public Type getType() {
return Type.getReturnType(getSignature());
}
+
+
+ /**
+ * @return Comparison strategy object
+ */
+ public static BCELComparator getComparator() {
+ return bcelComparator;
+ }
+
+
+ /**
+ * @param comparator Comparison strategy object
+ */
+ public static void setComparator( final BCELComparator comparator ) {
+ bcelComparator = comparator;
+ }
+
+
+ /**
+ * Return value as defined by given BCELComparator strategy.
+ * By default two Field objects are said to be equal when
+ * their names and signatures are equal.
+ *
+ * @see java.lang.Object#equals(java.lang.Object)
+ */
+ @Override
+ public boolean equals( final Object obj ) {
+ return bcelComparator.equals(this, obj);
+ }
+
+
+ /**
+ * 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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