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/* gnu.java.lang.ClassHelper |
/* ClassHelper.java -- Utility methods to augment java.lang.Class |
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Copyright (C) 1998 Free Software Foundation, Inc. |
Copyright (C) 1998, 2002 Free Software Foundation, Inc. |
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This file is part of GNU Classpath. |
This file is part of GNU Classpath. |
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it under the terms of the GNU General Public License as published by |
it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2, or (at your option) |
the Free Software Foundation; either version 2, or (at your option) |
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any later version. |
any later version. |
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|
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GNU Classpath is distributed in the hope that it will be useful, but |
GNU Classpath is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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import java.lang.reflect.*; |
import java.lang.reflect.*; |
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|
|
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/** |
/** |
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** ClassHelper has various methods that ought to have been |
* ClassHelper has various methods that ought to have been in Class. |
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** in class. |
* |
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** |
* @author John Keiser |
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** @author John Keiser |
* @author Eric Blake <ebb9@email.byu.edu> |
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** @version 1.1.0, 29 Jul 1998 |
*/ |
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**/ |
public class ClassHelper |
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|
{ |
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public class ClassHelper { |
/** |
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/** Strip the package part from the class name. |
* Strip the package part from the class name. |
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** @param clazz the class to get the truncated name from |
* |
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** @return the truncated class name. |
* @param clazz the class to get the truncated name from |
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**/ |
* @return the truncated class name |
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public static String getTruncatedClassName(Class clazz) { |
*/ |
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return getTruncatedName(clazz.getName()); |
public static String getTruncatedClassName(Class clazz) |
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} |
{ |
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/** Strip the package part from the class name, or the |
return getTruncatedName(clazz.getName()); |
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** class part from the method or field name. |
} |
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** @param name the name to truncate. |
|
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** @return the truncated name. |
/** |
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**/ |
* Strip the package part from the class name, or the class part from |
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public static String getTruncatedName(String name) { |
* the method or field name. |
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int lastInd = name.lastIndexOf('.'); |
* |
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if(lastInd == -1) { |
* @param name the name to truncate |
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return name; |
* @return the truncated name |
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} else { |
*/ |
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return name.substring(lastInd+1); |
public static String getTruncatedName(String name) |
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} |
{ |
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} |
int lastInd = name.lastIndexOf('.'); |
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|
if (lastInd == -1) |
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/** Strip the last portion of the name (after the last |
return name; |
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** dot). |
return name.substring(lastInd + 1); |
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** @param name the name to get package of. |
} |
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** @return the package name. "" if no package. |
|
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**/ |
/** |
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public static String getPackagePortion(String name) { |
* Strip the last portion of the name (after the last dot). |
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int lastInd = name.lastIndexOf('.'); |
* |
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if(lastInd == -1) { |
* @param name the name to get package of |
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return ""; |
* @return the package name, or "" if no package |
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} else { |
*/ |
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return name.substring(0,lastInd); |
public static String getPackagePortion(String name) |
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} |
{ |
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} |
int lastInd = name.lastIndexOf('.'); |
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|
if (lastInd == -1) |
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static Hashtable allMethods = new Hashtable(); |
return ""; |
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static Hashtable allMethodsAtDeclaration = new Hashtable(); |
return name.substring(0, lastInd); |
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|
} |
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/** Get all the methods, public, private and |
|
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** otherwise, from the class, getting them |
/** Cache of methods found in getAllMethods(). */ |
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** from the most recent class to find them. |
static Hashtable allMethods = new Hashtable(); |
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**/ |
|
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public static Method[] getAllMethods(Class clazz) { |
/** Cache of methods found in getAllMethodsAtDeclaration(). */ |
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Method[] retval = (Method[])allMethods.get(clazz); |
static Hashtable allMethodsAtDeclaration = new Hashtable(); |
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if(retval == null) { |
|
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Method[] superMethods; |
/** |
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if(clazz.getSuperclass() != null) { |
* Get all the methods, public, private and otherwise, from the class, |
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superMethods = getAllMethods(clazz.getSuperclass()); |
* getting them from the most recent class to find them. |
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} else { |
* |
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superMethods = new Method[0]; |
* @param clazz the class to start at |
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} |
* @return all methods declared or inherited in clazz |
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Vector v = new Vector(); |
*/ |
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Method[] currentMethods = clazz.getDeclaredMethods(); |
public static Method[] getAllMethods(Class clazz) |
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for(int i=0;i<currentMethods.length;i++) { |
{ |
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v.addElement(currentMethods[i]); |
Method[] retval = (Method[]) allMethods.get(clazz); |
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} |
if (retval == null) |
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for(int i=0;i<superMethods.length;i++) { |
{ |
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boolean addOK = true; |
Method[] superMethods; |
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for(int j=0;j<currentMethods.length;j++) { |
if (clazz.getSuperclass() != null) |
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if(getTruncatedName(superMethods[i].getName()).equals(getTruncatedName(currentMethods[j].getName())) |
superMethods = getAllMethods(clazz.getSuperclass()); |
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&& ArrayHelper.equalsArray(superMethods[i].getParameterTypes(),currentMethods[j].getParameterTypes())) { |
else |
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addOK = false; |
superMethods = new Method[0]; |
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} |
Vector v = new Vector(); |
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} |
Method[] currentMethods = clazz.getDeclaredMethods(); |
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if(addOK) { |
for (int i = 0; i < currentMethods.length; i++) |
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v.addElement(superMethods[i]); |
v.addElement(currentMethods[i]); |
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} |
for (int i = 0; i < superMethods.length; i++) |
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} |
{ |
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|
boolean addOK = true; |
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retval = new Method[v.size()]; |
for (int j = 0; j < currentMethods.length; j++) |
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v.copyInto(retval); |
{ |
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allMethods.put(clazz,retval); |
if (getTruncatedName(superMethods[i].getName()) |
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} |
.equals(getTruncatedName(currentMethods[j].getName())) |
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return retval; |
&& ArrayHelper.equalsArray(superMethods[i].getParameterTypes(), |
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} |
currentMethods[j].getParameterTypes())) |
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|
{ |
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/** Get all the methods, public, private and |
addOK = false; |
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** otherwise, from the class, and get them from |
} |
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** their point of declaration. |
} |
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**/ |
if(addOK) |
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public static Method[] getAllMethodsAtDeclaration(Class clazz) { |
v.addElement(superMethods[i]); |
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Method[] retval = (Method[])allMethodsAtDeclaration.get(clazz); |
} |
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if(retval == null) { |
retval = new Method[v.size()]; |
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Method[] superMethods; |
v.copyInto(retval); |
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if(clazz.getSuperclass() != null) { |
allMethods.put(clazz,retval); |
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superMethods = getAllMethodsAtDeclaration(clazz.getSuperclass()); |
} |
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} else { |
return retval; |
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superMethods = new Method[0]; |
} |
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} |
|
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Vector v = new Vector(); |
/** |
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Method[] currentMethods = clazz.getDeclaredMethods(); |
* Get all the methods, public, private and otherwise, from the class, |
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for(int i=0;i<superMethods.length;i++) { |
* and get them from their point of declaration. |
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v.addElement(superMethods[i]); |
* |
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} |
* @param clazz the class to start at |
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for(int i=0;i<superMethods.length;i++) { |
* @return all methods declared or inherited in clazz |
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boolean addOK = true; |
*/ |
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for(int j=0;j<currentMethods.length;j++) { |
public static Method[] getAllMethodsAtDeclaration(Class clazz) |
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if(getTruncatedName(superMethods[i].getName()).equals(getTruncatedName(currentMethods[j].getName())) |
{ |
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&& ArrayHelper.equalsArray(superMethods[i].getParameterTypes(),currentMethods[j].getParameterTypes())) { |
Method[] retval = (Method[]) allMethodsAtDeclaration.get(clazz); |
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addOK = false; |
if (retval == null) |
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} |
{ |
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} |
Method[] superMethods; |
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if(addOK) { |
if (clazz.getSuperclass() != null) |
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v.addElement(superMethods[i]); |
superMethods = getAllMethodsAtDeclaration(clazz.getSuperclass()); |
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} |
else |
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} |
superMethods = new Method[0]; |
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|
Vector v = new Vector(); |
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retval = new Method[v.size()]; |
Method[] currentMethods = clazz.getDeclaredMethods(); |
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v.copyInto(retval); |
for (int i = 0; i < superMethods.length; i++) |
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allMethodsAtDeclaration.put(clazz,retval); |
v.addElement(superMethods[i]); |
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} |
for (int i = 0; i < superMethods.length; i++) |
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return retval; |
{ |
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} |
boolean addOK = true; |
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|
for (int j = 0; j < currentMethods.length; j++) |
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static Hashtable allFields = new Hashtable(); |
{ |
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static Hashtable allFieldsAtDeclaration = new Hashtable(); |
if (getTruncatedName(superMethods[i].getName()) |
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|
.equals(getTruncatedName(currentMethods[j].getName())) |
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/** Get all the fields, public, private and |
&& ArrayHelper.equalsArray(superMethods[i].getParameterTypes(), |
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** otherwise, from the class, getting them |
currentMethods[j].getParameterTypes())) |
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** from the most recent class to find them. |
{ |
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**/ |
addOK = false; |
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public static Field[] getAllFields(Class clazz) { |
} |
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Field[] retval = (Field[])allFields.get(clazz); |
} |
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if(retval == null) { |
if(addOK) |
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Field[] superFields; |
v.addElement(superMethods[i]); |
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if(clazz.getSuperclass() != null) { |
} |
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superFields = getAllFields(clazz.getSuperclass()); |
retval = new Method[v.size()]; |
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} else { |
v.copyInto(retval); |
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superFields = new Field[0]; |
allMethodsAtDeclaration.put(clazz,retval); |
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} |
} |
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Vector v = new Vector(); |
return retval; |
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Field[] currentFields = clazz.getDeclaredFields(); |
} |
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for(int i=0;i<currentFields.length;i++) { |
|
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v.addElement(currentFields[i]); |
/** Cache of fields found in getAllFields(). */ |
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} |
static Hashtable allFields = new Hashtable(); |
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for(int i=0;i<superFields.length;i++) { |
|
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boolean addOK = true; |
/** Cache of fields found in getAllFieldsAtDeclaration(). */ |
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for(int j=0;j<currentFields.length;j++) { |
static Hashtable allFieldsAtDeclaration = new Hashtable(); |
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if(getTruncatedName(superFields[i].getName()).equals(getTruncatedName(currentFields[j].getName()))) { |
|
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addOK = false; |
/** |
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} |
* Get all the fields, public, private and otherwise, from the class, |
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} |
* getting them from the most recent class to find them. |
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if(addOK) { |
* |
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v.addElement(superFields[i]); |
* @param clazz the class to start at |
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} |
* @return all fields declared or inherited in clazz |
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} |
*/ |
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|
public static Field[] getAllFields(Class clazz) |
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retval = new Field[v.size()]; |
{ |
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v.copyInto(retval); |
Field[] retval = (Field[]) allFields.get(clazz); |
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allFields.put(clazz,retval); |
if (retval == null) |
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} |
{ |
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return retval; |
Field[] superFields; |
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} |
if (clazz.getSuperclass() != null) |
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|
superFields = getAllFields(clazz.getSuperclass()); |
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/** Get all the fields, public, private and |
else |
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** otherwise, from the class, and get them from |
superFields = new Field[0]; |
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** their point of declaration. |
Vector v = new Vector(); |
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**/ |
Field[] currentFields = clazz.getDeclaredFields(); |
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public static Field[] getAllFieldsAtDeclaration(Class clazz) { |
for (int i = 0; i < currentFields.length; i++) |
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Field[] retval = (Field[])allFieldsAtDeclaration.get(clazz); |
v.addElement(currentFields[i]); |
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if(retval == null) { |
for (int i = 0; i < superFields.length; i++) |
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Field[] superFields; |
{ |
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if(clazz.getSuperclass() != null) { |
boolean addOK = true; |
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superFields = getAllFieldsAtDeclaration(clazz.getSuperclass()); |
for (int j = 0; j < currentFields.length; j++) |
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} else { |
{ |
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superFields = new Field[0]; |
if (getTruncatedName(superFields[i].getName()) |
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} |
.equals(getTruncatedName(currentFields[j].getName()))) |
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Vector v = new Vector(); |
{ |
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Field[] currentFields = clazz.getDeclaredFields(); |
addOK = false; |
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for(int i=0;i<superFields.length;i++) { |
} |
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v.addElement(superFields[i]); |
} |
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} |
if (addOK) |
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for(int i=0;i<superFields.length;i++) { |
v.addElement(superFields[i]); |
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boolean addOK = true; |
} |
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for(int j=0;j<currentFields.length;j++) { |
retval = new Field[v.size()]; |
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if(getTruncatedName(superFields[i].getName()).equals(getTruncatedName(currentFields[j].getName()))) { |
v.copyInto(retval); |
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addOK = false; |
allFields.put(clazz,retval); |
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} |
} |
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} |
return retval; |
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if(addOK) { |
} |
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v.addElement(superFields[i]); |
|
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} |
/** |
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} |
* Get all the fields, public, private and otherwise, from the class, |
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|
* and get them from their point of declaration. |
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retval = new Field[v.size()]; |
* |
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v.copyInto(retval); |
* @param clazz the class to start at |
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allFieldsAtDeclaration.put(clazz,retval); |
* @return all fields declared or inherited in clazz |
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} |
*/ |
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return retval; |
public static Field[] getAllFieldsAtDeclaration(Class clazz) |
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} |
{ |
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Field[] retval = (Field[]) allFieldsAtDeclaration.get(clazz); |
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if (retval == null) |
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{ |
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Field[] superFields; |
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if (clazz.getSuperclass() != null) |
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superFields = getAllFieldsAtDeclaration(clazz.getSuperclass()); |
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else |
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superFields = new Field[0]; |
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Vector v = new Vector(); |
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Field[] currentFields = clazz.getDeclaredFields(); |
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for (int i = 0; i < superFields.length; i++) |
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v.addElement(superFields[i]); |
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for (int i = 0; i < superFields.length; i++) |
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{ |
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boolean addOK = true; |
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for (int j = 0; j < currentFields.length; j++) |
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{ |
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if (getTruncatedName(superFields[i].getName()) |
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.equals(getTruncatedName(currentFields[j].getName()))) |
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{ |
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addOK = false; |
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} |
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} |
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if(addOK) |
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v.addElement(superFields[i]); |
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} |
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retval = new Field[v.size()]; |
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v.copyInto(retval); |
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allFieldsAtDeclaration.put(clazz,retval); |
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} |
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return retval; |
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} |
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} |
} |