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author | Tom Tromey <tromey@gcc.gnu.org> | 2000-05-19 17:55:34 +0000 |
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committer | Tom Tromey <tromey@gcc.gnu.org> | 2000-05-19 17:55:34 +0000 |
commit | 6c80c45e3010bfe992b41dd8800d2c4b65e0d5ef (patch) | |
tree | 88cf0d32aea197ea8e8198e1206b04c820308615 /libjava/gnu/java/lang/ClassHelper.java | |
parent | 021c89ed68c151c45021fccf1bb5338ee817314c (diff) | |
download | gcc-6c80c45e3010bfe992b41dd8800d2c4b65e0d5ef.zip gcc-6c80c45e3010bfe992b41dd8800d2c4b65e0d5ef.tar.gz gcc-6c80c45e3010bfe992b41dd8800d2c4b65e0d5ef.tar.bz2 |
Jumbo patch:
* Imported beans and serialization
* Updated IA-64 port
* Miscellaneous bug fixes
From-SVN: r34028
Diffstat (limited to 'libjava/gnu/java/lang/ClassHelper.java')
-rw-r--r-- | libjava/gnu/java/lang/ClassHelper.java | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/libjava/gnu/java/lang/ClassHelper.java b/libjava/gnu/java/lang/ClassHelper.java new file mode 100644 index 0000000..a4f32dc --- /dev/null +++ b/libjava/gnu/java/lang/ClassHelper.java @@ -0,0 +1,232 @@ +/* gnu.java.lang.ClassHelper + Copyright (C) 1998 Free Software Foundation, Inc. + +This file is part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2, or (at your option) +any later version. + +GNU Classpath is distributed in the hope that it will be useful, but +WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; see the file COPYING. If not, write to the +Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA +02111-1307 USA. + +As a special exception, if you link this library with other files to +produce an executable, this library does not by itself cause the +resulting executable to be covered by the GNU General Public License. +This exception does not however invalidate any other reasons why the +executable file might be covered by the GNU General Public License. */ + + +package gnu.java.lang; + +import java.util.*; +import java.lang.reflect.*; + +/** + ** ClassHelper has various methods that ought to have been + ** in class. + ** + ** @author John Keiser + ** @version 1.1.0, 29 Jul 1998 + **/ + +public class ClassHelper { + /** Strip the package part from the class name. + ** @param clazz the class to get the truncated name from + ** @return the truncated class name. + **/ + public static String getTruncatedClassName(Class clazz) { + return getTruncatedName(clazz.getName()); + } + /** Strip the package part from the class name, or the + ** class part from the method or field name. + ** @param name the name to truncate. + ** @return the truncated name. + **/ + public static String getTruncatedName(String name) { + int lastInd = name.lastIndexOf('.'); + if(lastInd == -1) { + return name; + } else { + return name.substring(lastInd+1); + } + } + + /** Strip the last portion of the name (after the last + ** dot). + ** @param name the name to get package of. + ** @return the package name. "" if no package. + **/ + public static String getPackagePortion(String name) { + int lastInd = name.lastIndexOf('.'); + if(lastInd == -1) { + return ""; + } else { + return name.substring(0,lastInd); + } + } + + static Hashtable allMethods = new Hashtable(); + static Hashtable allMethodsAtDeclaration = new Hashtable(); + + /** Get all the methods, public, private and + ** otherwise, from the class, getting them + ** from the most recent class to find them. + **/ + public static Method[] getAllMethods(Class clazz) { + Method[] retval = (Method[])allMethods.get(clazz); + if(retval == null) { + Method[] superMethods; + if(clazz.getSuperclass() != null) { + superMethods = getAllMethods(clazz.getSuperclass()); + } else { + superMethods = new Method[0]; + } + Vector v = new Vector(); + Method[] currentMethods = clazz.getDeclaredMethods(); + for(int i=0;i<currentMethods.length;i++) { + v.addElement(currentMethods[i]); + } + for(int i=0;i<superMethods.length;i++) { + boolean addOK = true; + for(int j=0;j<currentMethods.length;j++) { + if(getTruncatedName(superMethods[i].getName()).equals(getTruncatedName(currentMethods[j].getName())) + && ArrayHelper.equalsArray(superMethods[i].getParameterTypes(),currentMethods[j].getParameterTypes())) { + addOK = false; + } + } + if(addOK) { + v.addElement(superMethods[i]); + } + } + + retval = new Method[v.size()]; + v.copyInto(retval); + allMethods.put(clazz,retval); + } + return retval; + } + + /** Get all the methods, public, private and + ** otherwise, from the class, and get them from + ** their point of declaration. + **/ + public static Method[] getAllMethodsAtDeclaration(Class clazz) { + Method[] retval = (Method[])allMethodsAtDeclaration.get(clazz); + if(retval == null) { + Method[] superMethods; + if(clazz.getSuperclass() != null) { + superMethods = getAllMethodsAtDeclaration(clazz.getSuperclass()); + } else { + superMethods = new Method[0]; + } + Vector v = new Vector(); + Method[] currentMethods = clazz.getDeclaredMethods(); + for(int i=0;i<superMethods.length;i++) { + v.addElement(superMethods[i]); + } + for(int i=0;i<superMethods.length;i++) { + boolean addOK = true; + for(int j=0;j<currentMethods.length;j++) { + if(getTruncatedName(superMethods[i].getName()).equals(getTruncatedName(currentMethods[j].getName())) + && ArrayHelper.equalsArray(superMethods[i].getParameterTypes(),currentMethods[j].getParameterTypes())) { + addOK = false; + } + } + if(addOK) { + v.addElement(superMethods[i]); + } + } + + retval = new Method[v.size()]; + v.copyInto(retval); + allMethodsAtDeclaration.put(clazz,retval); + } + return retval; + } + + static Hashtable allFields = new Hashtable(); + static Hashtable allFieldsAtDeclaration = new Hashtable(); + + /** Get all the fields, public, private and + ** otherwise, from the class, getting them + ** from the most recent class to find them. + **/ + public static Field[] getAllFields(Class clazz) { + Field[] retval = (Field[])allFields.get(clazz); + if(retval == null) { + Field[] superFields; + if(clazz.getSuperclass() != null) { + superFields = getAllFields(clazz.getSuperclass()); + } else { + superFields = new Field[0]; + } + Vector v = new Vector(); + Field[] currentFields = clazz.getDeclaredFields(); + for(int i=0;i<currentFields.length;i++) { + v.addElement(currentFields[i]); + } + for(int i=0;i<superFields.length;i++) { + boolean addOK = true; + for(int j=0;j<currentFields.length;j++) { + if(getTruncatedName(superFields[i].getName()).equals(getTruncatedName(currentFields[j].getName()))) { + addOK = false; + } + } + if(addOK) { + v.addElement(superFields[i]); + } + } + + retval = new Field[v.size()]; + v.copyInto(retval); + allFields.put(clazz,retval); + } + return retval; + } + + /** Get all the fields, public, private and + ** otherwise, from the class, and get them from + ** their point of declaration. + **/ + public static Field[] getAllFieldsAtDeclaration(Class clazz) { + Field[] retval = (Field[])allFieldsAtDeclaration.get(clazz); + if(retval == null) { + Field[] superFields; + if(clazz.getSuperclass() != null) { + superFields = getAllFieldsAtDeclaration(clazz.getSuperclass()); + } else { + superFields = new Field[0]; + } + Vector v = new Vector(); + Field[] currentFields = clazz.getDeclaredFields(); + for(int i=0;i<superFields.length;i++) { + v.addElement(superFields[i]); + } + for(int i=0;i<superFields.length;i++) { + boolean addOK = true; + for(int j=0;j<currentFields.length;j++) { + if(getTruncatedName(superFields[i].getName()).equals(getTruncatedName(currentFields[j].getName()))) { + addOK = false; + } + } + if(addOK) { + v.addElement(superFields[i]); + } + } + + retval = new Field[v.size()]; + v.copyInto(retval); + allFieldsAtDeclaration.put(clazz,retval); + } + return retval; + } +} |