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* [0.98 merge] Generalise native methods for StringBuffer/Builder
@ 2008-09-10 19:43 Andrew John Hughes
  0 siblings, 0 replies; only message in thread
From: Andrew John Hughes @ 2008-09-10 19:43 UTC (permalink / raw)
  To: java-patches

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This patch removes a lot of unnecessary differences
between the implementations of StringBuffer and StringBuilder
in GNU Classpath and provides one implementation of the native
methods used by these classes.  Using one native implementation
in AbstractStringBuilder means we also don't run into as many
problems with bridge methods.

With this patch, we could probably remove StringBuilder.java altogether
as it becomes identical to the one in GNU Classpath.  StringBuffer retains
a single difference; the use of System over VMSystem.

ChangeLog:

2008-09-08  Andrew John Hughes  <gnu_andrew@member.fsf.org>

	* Makefile.am: Replace natStringBuffer.cc
	and natStringBuilder.cc with natAbstractStringBuffer.cc.
	* Makefile.in: Regenerated.
	* java/lang/AbstractStringBuffer.java:
	(append(int)): Made native.
	(regionMatches(int,String)): Likewise.
	* java/lang/StringBuffer.h: Regenerated.
	* java/lang/StringBuffer.java: Remerged with GNU Classpath.
	* java/lang/StringBuilder.h: Regenerated.
	* java/lang/StringBuilder.java: Remerged with GNU Classpath.
	* java/lang/natAbstractStringBuffer.cc: Provide common
	native methods for StringBuffer and StringBuilder.
	* java/lang/natStringBuffer.cc,
	* java/lang/natStringBuilder.cc: Removed.

-- 
Andrew :)

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Index: Makefile.in
===================================================================
--- Makefile.in	(revision 140114)
+++ Makefile.in	(working copy)
@@ -352,12 +352,11 @@
 	java/lang/natConcreteProcess.cc java/lang/natVMDouble.cc \
 	java/lang/natVMFloat.cc java/lang/natMath.cc \
 	java/lang/natObject.cc java/lang/natRuntime.cc \
-	java/lang/natString.cc java/lang/natStringBuffer.cc \
-	java/lang/natStringBuilder.cc java/lang/natSystem.cc \
-	java/lang/natThread.cc java/lang/natThreadLocal.cc \
-	java/lang/natVMClassLoader.cc java/lang/natVMProcess.cc \
-	java/lang/natVMThrowable.cc java/lang/ref/natReference.cc \
-	java/lang/reflect/natArray.cc \
+	java/lang/natString.cc java/lang/natAbstractStringBuffer.cc \
+	java/lang/natSystem.cc java/lang/natThread.cc \
+	java/lang/natThreadLocal.cc java/lang/natVMClassLoader.cc \
+	java/lang/natVMProcess.cc java/lang/natVMThrowable.cc \
+	java/lang/ref/natReference.cc java/lang/reflect/natArray.cc \
 	java/lang/reflect/natConstructor.cc \
 	java/lang/reflect/natField.cc java/lang/reflect/natMethod.cc \
 	java/lang/reflect/natVMProxy.cc java/net/natVMInetAddress.cc \
@@ -417,12 +416,11 @@
 	java/lang/natConcreteProcess.lo java/lang/natVMDouble.lo \
 	java/lang/natVMFloat.lo java/lang/natMath.lo \
 	java/lang/natObject.lo java/lang/natRuntime.lo \
-	java/lang/natString.lo java/lang/natStringBuffer.lo \
-	java/lang/natStringBuilder.lo java/lang/natSystem.lo \
-	java/lang/natThread.lo java/lang/natThreadLocal.lo \
-	java/lang/natVMClassLoader.lo java/lang/natVMProcess.lo \
-	java/lang/natVMThrowable.lo java/lang/ref/natReference.lo \
-	java/lang/reflect/natArray.lo \
+	java/lang/natString.lo java/lang/natAbstractStringBuffer.lo \
+	java/lang/natSystem.lo java/lang/natThread.lo \
+	java/lang/natThreadLocal.lo java/lang/natVMClassLoader.lo \
+	java/lang/natVMProcess.lo java/lang/natVMThrowable.lo \
+	java/lang/ref/natReference.lo java/lang/reflect/natArray.lo \
 	java/lang/reflect/natConstructor.lo \
 	java/lang/reflect/natField.lo java/lang/reflect/natMethod.lo \
 	java/lang/reflect/natVMProxy.lo java/net/natVMInetAddress.lo \
@@ -8443,8 +8441,7 @@
 java/lang/natObject.cc \
 java/lang/natRuntime.cc	\
 java/lang/natString.cc \
-java/lang/natStringBuffer.cc \
-java/lang/natStringBuilder.cc \
+java/lang/natAbstractStringBuffer.cc \
 java/lang/natSystem.cc \
 java/lang/natThread.cc \
 java/lang/natThreadLocal.cc \
@@ -8961,10 +8958,8 @@
 	java/lang/$(DEPDIR)/$(am__dirstamp)
 java/lang/natString.lo: java/lang/$(am__dirstamp) \
 	java/lang/$(DEPDIR)/$(am__dirstamp)
-java/lang/natStringBuffer.lo: java/lang/$(am__dirstamp) \
+java/lang/natAbstractStringBuffer.lo: java/lang/$(am__dirstamp) \
 	java/lang/$(DEPDIR)/$(am__dirstamp)
-java/lang/natStringBuilder.lo: java/lang/$(am__dirstamp) \
-	java/lang/$(DEPDIR)/$(am__dirstamp)
 java/lang/natSystem.lo: java/lang/$(am__dirstamp) \
 	java/lang/$(DEPDIR)/$(am__dirstamp)
 java/lang/natThread.lo: java/lang/$(am__dirstamp) \
@@ -9395,6 +9390,8 @@
 	-rm -f java/io/natVMObjectStreamClass.lo
 	-rm -f java/lang/Object.$(OBJEXT)
 	-rm -f java/lang/Object.lo
+	-rm -f java/lang/natAbstractStringBuffer.$(OBJEXT)
+	-rm -f java/lang/natAbstractStringBuffer.lo
 	-rm -f java/lang/natCharacter.$(OBJEXT)
 	-rm -f java/lang/natCharacter.lo
 	-rm -f java/lang/natClass.$(OBJEXT)
@@ -9411,10 +9408,6 @@
 	-rm -f java/lang/natRuntime.lo
 	-rm -f java/lang/natString.$(OBJEXT)
 	-rm -f java/lang/natString.lo
-	-rm -f java/lang/natStringBuffer.$(OBJEXT)
-	-rm -f java/lang/natStringBuffer.lo
-	-rm -f java/lang/natStringBuilder.$(OBJEXT)
-	-rm -f java/lang/natStringBuilder.lo
 	-rm -f java/lang/natSystem.$(OBJEXT)
 	-rm -f java/lang/natSystem.lo
 	-rm -f java/lang/natThread.$(OBJEXT)
@@ -9566,6 +9559,7 @@
 @AMDEP_TRUE@@am__include@ @am__quote@java/io/$(DEPDIR)/natVMObjectInputStream.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/io/$(DEPDIR)/natVMObjectStreamClass.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/Object.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natAbstractStringBuffer.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natCharacter.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natClass.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natClassLoader.Plo@am__quote@
@@ -9574,8 +9568,6 @@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natObject.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natRuntime.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natString.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natStringBuffer.Plo@am__quote@
-@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natStringBuilder.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natSystem.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natThread.Plo@am__quote@
 @AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natThreadLocal.Plo@am__quote@
Index: classpath/lib/java/lang/AbstractStringBuffer.class
===================================================================
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svn:mime-type = application/octet-stream
Index: classpath/lib/java/lang/StringBuffer.class
===================================================================
Cannot display: file marked as a binary type.
svn:mime-type = application/octet-stream
Index: classpath/lib/java/lang/StringBuilder.class
===================================================================
Cannot display: file marked as a binary type.
svn:mime-type = application/octet-stream
Index: java/lang/StringBuffer.java
===================================================================
--- java/lang/StringBuffer.java	(revision 140114)
+++ java/lang/StringBuffer.java	(working copy)
@@ -1,5 +1,5 @@
 /* StringBuffer.java -- Growable strings
-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
    Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
@@ -360,6 +360,33 @@
   }
 
   /**
+   * Append the <code>String</code> value of the argument to this
+   * <code>StringBuffer</code>. Uses <code>String.valueOf()</code> to convert
+   * to <code>String</code>.
+   *
+   * @param bool the <code>boolean</code> to convert and append
+   * @return this <code>StringBuffer</code>
+   * @see String#valueOf(boolean)
+   */
+  public synchronized StringBuffer append(boolean bool)
+  {
+    super.append(bool);
+    return this;
+  }
+
+  /**
+   * Append the <code>char</code> to this <code>StringBuffer</code>.
+   *
+   * @param ch the <code>char</code> to append
+   * @return this <code>StringBuffer</code>
+   */
+  public synchronized StringBuffer append(char ch)
+  {
+    super.append(ch);
+    return this;
+  }
+
+  /**
    * Append the characters in the <code>CharSequence</code> to this
    * buffer.
    *
@@ -369,8 +396,6 @@
    */
   public synchronized StringBuffer append(CharSequence seq)
   {
-    if (seq == null)
-      seq = "null";
     super.append(seq, 0, seq.length());
     return this;
   }
@@ -397,45 +422,22 @@
    * <code>StringBuffer</code>. Uses <code>String.valueOf()</code> to convert
    * to <code>String</code>.
    *
-   * @param bool the <code>boolean</code> to convert and append
+   * @param inum the <code>int</code> to convert and append
    * @return this <code>StringBuffer</code>
-   * @see String#valueOf(boolean)
+   * @see String#valueOf(int)
    */
-  public synchronized StringBuffer append(boolean bool)
+  // This is native in libgcj, for efficiency.
+  public synchronized StringBuffer append(int inum)
   {
-    super.append(bool);
+    super.append(inum);
     return this;
   }
 
   /**
-   * Append the <code>char</code> to this <code>StringBuffer</code>.
-   *
-   * @param ch the <code>char</code> to append
-   * @return this <code>StringBuffer</code>
-   */
-  public synchronized StringBuffer append(char ch)
-  {
-    super.append(ch);
-    return this;
-  }
-
-  /**
    * Append the <code>String</code> value of the argument to this
    * <code>StringBuffer</code>. Uses <code>String.valueOf()</code> to convert
    * to <code>String</code>.
    *
-   * @param inum the <code>int</code> to convert and append
-   * @return this <code>StringBuffer</code>
-   * @see String#valueOf(int)
-   */
-  // GCJ LOCAL: this is native for efficiency.
-  public native StringBuffer append (int inum);
-
-  /**
-   * Append the <code>String</code> value of the argument to this
-   * <code>StringBuffer</code>. Uses <code>String.valueOf()</code> to convert
-   * to <code>String</code>.
-   *
    * @param lnum the <code>long</code> to convert and append
    * @return this <code>StringBuffer</code>
    * @see String#valueOf(long)
@@ -971,19 +973,4 @@
       }
   }
 
-  /**
-   * Predicate which determines if a substring of this matches another String
-   * starting at a specified offset for each String and continuing for a
-   * specified length. This is more efficient than creating a String to call
-   * indexOf on.
-   *
-   * @param toffset index to start comparison at for this String
-   * @param other non-null String to compare to region of this
-   * @return true if regions match, false otherwise
-   * @see #indexOf(String, int)
-   * @see #lastIndexOf(String, int)
-   * @see String#regionMatches(boolean, int, String, int, int)
-   */
-  // GCJ LOCAL: native for gcj.
-  private native boolean regionMatches(int toffset, String other);
 }
Index: java/lang/StringBuilder.h
===================================================================
--- java/lang/StringBuilder.h	(revision 140114)
+++ java/lang/StringBuilder.h	(working copy)
@@ -6,11 +6,11 @@
 
 #pragma interface
 
-#include <java/lang/Object.h>
+#include <java/lang/AbstractStringBuffer.h>
 #include <gcj/array.h>
 
 
-class java::lang::StringBuilder : public ::java::lang::Object
+class java::lang::StringBuilder : public ::java::lang::AbstractStringBuffer
 {
 
 public:
@@ -20,66 +20,75 @@
   StringBuilder(::java::lang::CharSequence *);
   jint length();
   jint capacity();
-  void ensureCapacity(jint);
-  void setLength(jint);
-  jchar charAt(jint);
-  void getChars(jint, jint, JArray< jchar > *, jint);
-  void setCharAt(jint, jchar);
-  ::java::lang::StringBuilder * append(::java::lang::Object *);
-  ::java::lang::StringBuilder * append(::java::lang::String *);
-  ::java::lang::StringBuilder * append(::java::lang::StringBuffer *);
-  ::java::lang::StringBuilder * append(JArray< jchar > *);
-  ::java::lang::StringBuilder * append(JArray< jchar > *, jint, jint);
-  ::java::lang::StringBuilder * append(jboolean);
+  ::java::lang::StringBuilder * StringBuilder$append(::java::lang::Object *);
+  ::java::lang::StringBuilder * StringBuilder$append(::java::lang::String *);
+  ::java::lang::StringBuilder * StringBuilder$append(::java::lang::StringBuffer *);
+  ::java::lang::StringBuilder * StringBuilder$append(JArray< jchar > *);
+  ::java::lang::StringBuilder * StringBuilder$append(JArray< jchar > *, jint, jint);
+  ::java::lang::StringBuilder * StringBuilder$append(jboolean);
   ::java::lang::StringBuilder * StringBuilder$append(jchar);
   ::java::lang::StringBuilder * StringBuilder$append(::java::lang::CharSequence *);
   ::java::lang::StringBuilder * StringBuilder$append(::java::lang::CharSequence *, jint, jint);
-  ::java::lang::StringBuilder * appendCodePoint(jint);
-  ::java::lang::StringBuilder * append(jint);
-  ::java::lang::StringBuilder * append(jlong);
-  ::java::lang::StringBuilder * append(jfloat);
-  ::java::lang::StringBuilder * append(jdouble);
-  ::java::lang::StringBuilder * delete$(jint, jint);
-  ::java::lang::StringBuilder * deleteCharAt(jint);
-  ::java::lang::StringBuilder * replace(jint, jint, ::java::lang::String *);
+  ::java::lang::StringBuilder * StringBuilder$append(jint);
+  ::java::lang::StringBuilder * StringBuilder$append(jlong);
+  ::java::lang::StringBuilder * StringBuilder$append(jfloat);
+  ::java::lang::StringBuilder * StringBuilder$append(jdouble);
+  ::java::lang::StringBuilder * StringBuilder$appendCodePoint(jint);
+  ::java::lang::StringBuilder * StringBuilder$delete(jint, jint);
+  ::java::lang::StringBuilder * StringBuilder$deleteCharAt(jint);
+  ::java::lang::StringBuilder * StringBuilder$replace(jint, jint, ::java::lang::String *);
   ::java::lang::String * substring(jint);
   ::java::lang::CharSequence * subSequence(jint, jint);
   ::java::lang::String * substring(jint, jint);
-  ::java::lang::StringBuilder * insert(jint, JArray< jchar > *, jint, jint);
-  ::java::lang::StringBuilder * insert(jint, ::java::lang::Object *);
-  ::java::lang::StringBuilder * insert(jint, ::java::lang::String *);
-  ::java::lang::StringBuilder * insert(jint, ::java::lang::CharSequence *);
-  ::java::lang::StringBuilder * insert(jint, ::java::lang::CharSequence *, jint, jint);
-  ::java::lang::StringBuilder * insert(jint, JArray< jchar > *);
-  ::java::lang::StringBuilder * insert(jint, jboolean);
-  ::java::lang::StringBuilder * insert(jint, jchar);
-  ::java::lang::StringBuilder * insert(jint, jint);
-  ::java::lang::StringBuilder * insert(jint, jlong);
-  ::java::lang::StringBuilder * insert(jint, jfloat);
-  ::java::lang::StringBuilder * insert(jint, jdouble);
-  jint indexOf(::java::lang::String *);
-  jint indexOf(::java::lang::String *, jint);
-  jint lastIndexOf(::java::lang::String *);
-  jint lastIndexOf(::java::lang::String *, jint);
-  ::java::lang::StringBuilder * reverse();
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, JArray< jchar > *, jint, jint);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, ::java::lang::Object *);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, ::java::lang::String *);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, ::java::lang::CharSequence *);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, ::java::lang::CharSequence *, jint, jint);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, JArray< jchar > *);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, jboolean);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, jchar);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, jint);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, jlong);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, jfloat);
+  ::java::lang::StringBuilder * StringBuilder$insert(jint, jdouble);
+  ::java::lang::StringBuilder * StringBuilder$reverse();
   ::java::lang::String * toString();
-private:
-  jboolean regionMatches(jint, ::java::lang::String *);
-public:
-  jint codePointAt(jint);
-  jint codePointBefore(jint);
-  jint codePointCount(jint, jint);
-  void trimToSize();
+  ::java::lang::AbstractStringBuffer * reverse();
+  ::java::lang::AbstractStringBuffer * deleteCharAt(jint);
+  ::java::lang::AbstractStringBuffer * replace(jint, jint, ::java::lang::String *);
+  ::java::lang::AbstractStringBuffer * delete$(jint, jint);
+  ::java::lang::AbstractStringBuffer * insert(jint, jdouble);
+  ::java::lang::AbstractStringBuffer * insert(jint, jfloat);
+  ::java::lang::AbstractStringBuffer * insert(jint, jlong);
+  ::java::lang::AbstractStringBuffer * insert(jint, jint);
+  ::java::lang::AbstractStringBuffer * insert(jint, jchar);
+  ::java::lang::AbstractStringBuffer * insert(jint, jboolean);
+  ::java::lang::AbstractStringBuffer * insert(jint, JArray< jchar > *);
+  ::java::lang::AbstractStringBuffer * insert(jint, ::java::lang::CharSequence *, jint, jint);
+  ::java::lang::AbstractStringBuffer * insert(jint, ::java::lang::CharSequence *);
+  ::java::lang::AbstractStringBuffer * insert(jint, ::java::lang::String *);
+  ::java::lang::AbstractStringBuffer * insert(jint, ::java::lang::Object *);
+  ::java::lang::AbstractStringBuffer * insert(jint, JArray< jchar > *, jint, jint);
+  ::java::lang::AbstractStringBuffer * append(jdouble);
+  ::java::lang::AbstractStringBuffer * append(jfloat);
+  ::java::lang::AbstractStringBuffer * append(jlong);
+  ::java::lang::AbstractStringBuffer * append(jint);
   ::java::lang::Appendable * append(::java::lang::CharSequence *, jint, jint);
+  ::java::lang::AbstractStringBuffer * AbstractStringBuffer$append(::java::lang::CharSequence *, jint, jint);
   ::java::lang::Appendable * append(::java::lang::CharSequence *);
+  ::java::lang::AbstractStringBuffer * AbstractStringBuffer$append(::java::lang::CharSequence *);
   ::java::lang::Appendable * append(jchar);
+  ::java::lang::AbstractStringBuffer * AbstractStringBuffer$append(jchar);
+  ::java::lang::AbstractStringBuffer * append(jboolean);
+  ::java::lang::AbstractStringBuffer * append(JArray< jchar > *, jint, jint);
+  ::java::lang::AbstractStringBuffer * append(JArray< jchar > *);
+  ::java::lang::AbstractStringBuffer * append(::java::lang::StringBuffer *);
+  ::java::lang::AbstractStringBuffer * append(::java::lang::String *);
+  ::java::lang::AbstractStringBuffer * append(::java::lang::Object *);
+  ::java::lang::AbstractStringBuffer * appendCodePoint(jint);
 private:
   static const jlong serialVersionUID = 4383685877147921099LL;
-public: // actually package-private
-  jint __attribute__((aligned(__alignof__( ::java::lang::Object)))) count;
-  JArray< jchar > * value;
-private:
-  static const jint DEFAULT_CAPACITY = 16;
 public:
   static ::java::lang::Class class$;
 };
Index: java/lang/natStringBuilder.cc
===================================================================
--- java/lang/natStringBuilder.cc	(revision 140114)
+++ java/lang/natStringBuilder.cc	(working copy)
@@ -1,29 +0,0 @@
-// Native methods for StringBuilder.
-
-/* Copyright (C) 2005  Free Software Foundation
-
-   This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
-details.  */
-
-#include <config.h>
-#include <gcj/cni.h>
-#include <java/lang/StringBuilder.h>
-#include <java/lang/String.h>
-
-jboolean
-java::lang::StringBuilder::regionMatches(jint offset, jstring other)
-{
-  int len = other->count;
-  int index = 0;
-  jchar *sc = elements (value);
-  jchar *oc = _Jv_GetStringChars (other);
-  while (--len >= 0)
-    {
-      if (sc[offset++] != oc[index++])
-	return false;
-    }
-  return true;
-}
Index: java/lang/AbstractStringBuffer.java
===================================================================
--- java/lang/AbstractStringBuffer.java	(revision 140114)
+++ java/lang/AbstractStringBuffer.java	(working copy)
@@ -436,11 +436,8 @@
    * @return this <code>StringBuffer</code>
    * @see String#valueOf(int)
    */
-  // This is native in libgcj, for efficiency.
-  public AbstractStringBuffer append(int inum)
-  {
-    return append(String.valueOf(inum));
-  }
+  // GCJ LOCAL: this is native for efficiency.
+  public native AbstractStringBuffer append (int inum);
 
   /**
    * Append the <code>String</code> value of the argument to this
@@ -1024,17 +1021,7 @@
    * @see #lastIndexOf(String, int)
    * @see String#regionMatches(boolean, int, String, int, int)
    */
-  private boolean regionMatches(int toffset, String other)
-  {
-  /*
-    int len = other.count;
-    int index = other.offset;
-    while (--len >= 0)
-      if (value[toffset++] != other.value[index++])
-        return false;
-    return true;
-  */
-    throw new UnsupportedOperationException();
-  }
+  // GCJ LOCAL: native for gcj.
+  private native boolean regionMatches(int toffset, String other);
 
 }
Index: java/lang/StringBuffer.h
===================================================================
--- java/lang/StringBuffer.h	(revision 140114)
+++ java/lang/StringBuffer.h	(working copy)
@@ -32,10 +32,10 @@
   ::java::lang::StringBuffer * StringBuffer$append(::java::lang::StringBuffer *);
   ::java::lang::StringBuffer * StringBuffer$append(JArray< jchar > *);
   ::java::lang::StringBuffer * StringBuffer$append(JArray< jchar > *, jint, jint);
-  ::java::lang::StringBuffer * StringBuffer$append(::java::lang::CharSequence *);
-  ::java::lang::StringBuffer * StringBuffer$append(::java::lang::CharSequence *, jint, jint);
   ::java::lang::StringBuffer * StringBuffer$append(jboolean);
   ::java::lang::StringBuffer * StringBuffer$append(jchar);
+  ::java::lang::StringBuffer * StringBuffer$append(::java::lang::CharSequence *);
+  ::java::lang::StringBuffer * StringBuffer$append(::java::lang::CharSequence *, jint, jint);
   ::java::lang::StringBuffer * StringBuffer$append(jint);
   ::java::lang::StringBuffer * StringBuffer$append(jlong);
   ::java::lang::StringBuffer * StringBuffer$append(jfloat);
@@ -70,8 +70,6 @@
   jint offsetByCodePoints(jint, jint);
 public: // actually package-private
   void ensureCapacity_unsynchronized(jint);
-private:
-  jboolean regionMatches(jint, ::java::lang::String *);
 public:
   ::java::lang::AbstractStringBuffer * reverse();
   ::java::lang::AbstractStringBuffer * deleteCharAt(jint);
@@ -93,13 +91,13 @@
   ::java::lang::AbstractStringBuffer * append(jfloat);
   ::java::lang::AbstractStringBuffer * append(jlong);
   ::java::lang::AbstractStringBuffer * append(jint);
-  ::java::lang::Appendable * append(jchar);
-  ::java::lang::AbstractStringBuffer * AbstractStringBuffer$append(jchar);
-  ::java::lang::AbstractStringBuffer * append(jboolean);
   ::java::lang::Appendable * append(::java::lang::CharSequence *, jint, jint);
   ::java::lang::AbstractStringBuffer * AbstractStringBuffer$append(::java::lang::CharSequence *, jint, jint);
   ::java::lang::Appendable * append(::java::lang::CharSequence *);
   ::java::lang::AbstractStringBuffer * AbstractStringBuffer$append(::java::lang::CharSequence *);
+  ::java::lang::Appendable * append(jchar);
+  ::java::lang::AbstractStringBuffer * AbstractStringBuffer$append(jchar);
+  ::java::lang::AbstractStringBuffer * append(jboolean);
   ::java::lang::AbstractStringBuffer * append(JArray< jchar > *, jint, jint);
   ::java::lang::AbstractStringBuffer * append(JArray< jchar > *);
   ::java::lang::AbstractStringBuffer * append(::java::lang::StringBuffer *);
Index: java/lang/natStringBuffer.cc
===================================================================
--- java/lang/natStringBuffer.cc	(revision 140114)
+++ java/lang/natStringBuffer.cc	(working copy)
@@ -1,42 +0,0 @@
-// natStringBuffer.cc - Implementation of java.lang.StringBuffer native methods.
-
-/* Copyright (C) 2001, 2003  Free Software Foundation
-
-   This file is part of libgcj.
-
-This software is copyrighted work licensed under the terms of the
-Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
-details.  */
-
-#include <config.h>
-#include <gcj/cni.h>
-#include <java/lang/StringBuffer.h>
-
-java::lang::StringBuffer*
-java::lang::StringBuffer::StringBuffer$append (jint num)
-{
-  // Use an array large enough for "-2147483648"; i.e. 11 chars.
-  jchar buffer[11];
-  int i = _Jv_FormatInt (buffer+11, num);
-  JvSynchronize dummy (this);
-  jint needed = count + i;
-  ensureCapacity_unsynchronized (needed);
-  jchar* dst = elements (value) + count;
-  jchar* src = buffer+11-i;
-  while (--i >= 0)
-    *dst++ = *src++;
-  count = needed;
-  return this;
-}
-
-jboolean
-java::lang::StringBuffer::regionMatches(jint toffset, jstring other)
-{
-  jint len = other->count;
-  jchar *tptr = elements(value) + toffset;
-  jchar *optr = JvGetStringChars(other);
-  while (--len >= 0)
-    if (*tptr++ != *optr++)
-      return false;
-  return true;
-}
Index: java/lang/StringBuilder.java
===================================================================
--- java/lang/StringBuilder.java	(revision 140114)
+++ java/lang/StringBuilder.java	(working copy)
@@ -1,5 +1,5 @@
 /* StringBuilder.java -- Unsynchronized growable strings
-   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+   Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
    Free Software Foundation, Inc.
 
 This file is part of GNU Classpath.
@@ -75,6 +75,7 @@
  * @since 1.5
  */
 public final class StringBuilder
+  extends AbstractStringBuffer
   implements Serializable, CharSequence, Appendable
 {
   // Implementation note: if you change this class, you usually will
@@ -86,33 +87,11 @@
   private static final long serialVersionUID = 4383685877147921099L;
 
   /**
-   * Index of next available character (and thus the size of the current
-   * string contents).  Note that this has permissions set this way so that
-   * String can get the value.
-   *
-   * @serial the number of characters in the buffer
-   */
-  int count;
-
-  /**
-   * The buffer.  Note that this has permissions set this way so that String
-   * can get the value.
-   *
-   * @serial the buffer
-   */
-  char[] value;
-
-  /**
-   * The default capacity of a buffer.
-   */
-  private static final int DEFAULT_CAPACITY = 16;
-
-  /**
    * Create a new StringBuilder with default capacity 16.
    */
   public StringBuilder()
   {
-    this(DEFAULT_CAPACITY);
+    super();
   }
 
   /**
@@ -124,7 +103,7 @@
    */
   public StringBuilder(int capacity)
   {
-    value = new char[capacity];
+    super(capacity);
   }
 
   /**
@@ -137,10 +116,7 @@
    */
   public StringBuilder(String str)
   {
-    // Unfortunately, because the size is 16 larger, we cannot share.
-    count = str.count;
-    value = new char[count + DEFAULT_CAPACITY];
-    str.getChars(0, count, value, 0);
+    super(str);
   }
 
   /**
@@ -154,11 +130,7 @@
    */
   public StringBuilder(CharSequence seq)
   {
-    int len = seq.length();
-    count = len <= 0 ? 0 : len;
-    value = new char[count + DEFAULT_CAPACITY];
-    for (int i = 0; i < len; ++i)
-      value[i] = seq.charAt(i);
+    super(seq);
   }
 
   /**
@@ -189,122 +161,6 @@
   }
 
   /**
-   * Increase the capacity of this <code>StringBuilder</code>. This will
-   * ensure that an expensive growing operation will not occur until
-   * <code>minimumCapacity</code> is reached. The buffer is grown to the
-   * larger of <code>minimumCapacity</code> and
-   * <code>capacity() * 2 + 2</code>, if it is not already large enough.
-   *
-   * @param minimumCapacity the new capacity
-   * @see #capacity()
-   */
-  public void ensureCapacity(int minimumCapacity)
-  {
-    if (minimumCapacity > value.length)
-      {
-        int max = value.length * 2 + 2;
-        minimumCapacity = (minimumCapacity < max ? max : minimumCapacity);
-        char[] nb = new char[minimumCapacity];
-        System.arraycopy(value, 0, nb, 0, count);
-        value = nb;
-      }
-  }
-
-  /**
-   * Set the length of this StringBuilder. If the new length is greater than
-   * the current length, all the new characters are set to '\0'. If the new
-   * length is less than the current length, the first <code>newLength</code>
-   * characters of the old array will be preserved, and the remaining
-   * characters are truncated.
-   *
-   * @param newLength the new length
-   * @throws IndexOutOfBoundsException if the new length is negative
-   *         (while unspecified, this is a StringIndexOutOfBoundsException)
-   * @see #length()
-   */
-  public void setLength(int newLength)
-  {
-    if (newLength < 0)
-      throw new StringIndexOutOfBoundsException(newLength);
-
-    int valueLength = value.length;
-
-    /* Always call ensureCapacity in order to preserve copy-on-write
-       semantics.  */
-    ensureCapacity(newLength);
-
-    if (newLength < valueLength)
-      {
-        /* If the StringBuilder's value just grew, then we know that
-           value is newly allocated and the region between count and
-           newLength is filled with '\0'.  */
-	count = newLength;
-      }
-    else
-      {
-	/* The StringBuilder's value doesn't need to grow.  However,
-	   we should clear out any cruft that may exist.  */
-	while (count < newLength)
-          value[count++] = '\0';
-      }
-  }
-
-  /**
-   * Get the character at the specified index.
-   *
-   * @param index the index of the character to get, starting at 0
-   * @return the character at the specified index
-   * @throws IndexOutOfBoundsException if index is negative or &gt;= length()
-   *         (while unspecified, this is a StringIndexOutOfBoundsException)
-   */
-  public char charAt(int index)
-  {
-    if (index < 0 || index >= count)
-      throw new StringIndexOutOfBoundsException(index);
-    return value[index];
-  }
-
-  /**
-   * Get the specified array of characters. <code>srcOffset - srcEnd</code>
-   * characters will be copied into the array you pass in.
-   *
-   * @param srcOffset the index to start copying from (inclusive)
-   * @param srcEnd the index to stop copying from (exclusive)
-   * @param dst the array to copy into
-   * @param dstOffset the index to start copying into
-   * @throws NullPointerException if dst is null
-   * @throws IndexOutOfBoundsException if any source or target indices are
-   *         out of range (while unspecified, source problems cause a
-   *         StringIndexOutOfBoundsException, and dest problems cause an
-   *         ArrayIndexOutOfBoundsException)
-   * @see System#arraycopy(Object, int, Object, int, int)
-   */
-  public void getChars(int srcOffset, int srcEnd,
-		       char[] dst, int dstOffset)
-  {
-    if (srcOffset < 0 || srcEnd > count || srcEnd < srcOffset)
-      throw new StringIndexOutOfBoundsException();
-    System.arraycopy(value, srcOffset, dst, dstOffset, srcEnd - srcOffset);
-  }
-
-  /**
-   * Set the character at the specified index.
-   *
-   * @param index the index of the character to set starting at 0
-   * @param ch the value to set that character to
-   * @throws IndexOutOfBoundsException if index is negative or &gt;= length()
-   *         (while unspecified, this is a StringIndexOutOfBoundsException)
-   */
-  public void setCharAt(int index, char ch)
-  {
-    if (index < 0 || index >= count)
-      throw new StringIndexOutOfBoundsException(index);
-    // Call ensureCapacity to enforce copy-on-write.
-    ensureCapacity(count);
-    value[index] = ch;
-  }
-
-  /**
    * Append the <code>String</code> value of the argument to this
    * <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
    * to <code>String</code>.
@@ -316,7 +172,8 @@
    */
   public StringBuilder append(Object obj)
   {
-    return append(obj == null ? "null" : obj.toString());
+    super.append(obj);
+    return this;
   }
 
   /**
@@ -328,12 +185,7 @@
    */
   public StringBuilder append(String str)
   {
-    if (str == null)
-      str = "null";
-    int len = str.count;
-    ensureCapacity(count + len);
-    str.getChars(0, len, value, count);
-    count += len;
+    super.append(str);
     return this;
   }
 
@@ -348,15 +200,7 @@
    */
   public StringBuilder append(StringBuffer stringBuffer)
   {
-    if (stringBuffer == null)
-      return append("null");
-    synchronized (stringBuffer)
-      {
-	int len = stringBuffer.count;
-	ensureCapacity(count + len);
-	System.arraycopy(stringBuffer.value, 0, value, count, len);
-	count += len;
-      }
+    super.append(stringBuffer);
     return this;
   }
 
@@ -372,7 +216,8 @@
    */
   public StringBuilder append(char[] data)
   {
-    return append(data, 0, data.length);
+    super.append(data, 0, data.length);
+    return this;
   }
 
   /**
@@ -391,11 +236,7 @@
    */
   public StringBuilder append(char[] data, int offset, int count)
   {
-    if (offset < 0 || count < 0 || offset > data.length - count)
-      throw new StringIndexOutOfBoundsException();
-    ensureCapacity(this.count + count);
-    System.arraycopy(data, offset, value, this.count, count);
-    this.count += count;
+    super.append(data, offset, count);
     return this;
   }
 
@@ -410,7 +251,8 @@
    */
   public StringBuilder append(boolean bool)
   {
-    return append(bool ? "true" : "false");
+    super.append(bool);
+    return this;
   }
 
   /**
@@ -421,8 +263,7 @@
    */
   public StringBuilder append(char ch)
   {
-    ensureCapacity(count + 1);
-    value[count++] = ch;
+    super.append(ch);
     return this;
   }
 
@@ -435,7 +276,8 @@
    */
   public StringBuilder append(CharSequence seq)
   {
-    return append(seq, 0, seq.length());
+    super.append(seq, 0, seq.length());
+    return this;
   }
 
   /**
@@ -451,37 +293,11 @@
   public StringBuilder append(CharSequence seq, int start,
 			      int end)
   {
-    if (seq == null)
-      return append("null");
-    if (end - start > 0)
-      {
-	ensureCapacity(count + end - start);
-	for (; start < end; ++start)
-	  value[count++] = seq.charAt(start);
-      }
+    super.append(seq, start, end);
     return this;
   }
 
   /**
-   * Append the code point to this <code>StringBuilder</code>.
-   * This is like #append(char), but will append two characters
-   * if a supplementary code point is given.
-   *
-   * @param code the code point to append
-   * @return this <code>StringBuilder</code>
-   * @see Character#toChars(int, char[], int)
-   * @since 1.5
-   */
-  public synchronized StringBuilder appendCodePoint(int code)
-  {
-    int len = Character.charCount(code);
-    ensureCapacity(count + len);
-    Character.toChars(code, value, count);
-    count += len;
-    return this;
-  }
-
-  /**
    * Append the <code>String</code> value of the argument to this
    * <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
    * to <code>String</code>.
@@ -490,10 +306,11 @@
    * @return this <code>StringBuilder</code>
    * @see String#valueOf(int)
    */
-  // FIXME: this is native in libgcj in StringBuffer.
+  // This is native in libgcj, for efficiency.
   public StringBuilder append(int inum)
   {
-    return append(String.valueOf(inum));
+    super.append(inum);
+    return this;
   }
 
   /**
@@ -507,7 +324,8 @@
    */
   public StringBuilder append(long lnum)
   {
-    return append(Long.toString(lnum, 10));
+    super.append(lnum);
+    return this;
   }
 
   /**
@@ -521,7 +339,8 @@
    */
   public StringBuilder append(float fnum)
   {
-    return append(Float.toString(fnum));
+    super.append(fnum);
+    return this;
   }
 
   /**
@@ -535,10 +354,27 @@
    */
   public StringBuilder append(double dnum)
   {
-    return append(Double.toString(dnum));
+    super.append(dnum);
+    return this;
   }
 
   /**
+   * Append the code point to this <code>StringBuilder</code>.
+   * This is like #append(char), but will append two characters
+   * if a supplementary code point is given.
+   *
+   * @param code the code point to append
+   * @return this <code>StringBuilder</code>
+   * @see Character#toChars(int, char[], int)
+   * @since 1.5
+   */
+  public StringBuilder appendCodePoint(int code)
+  {
+    super.appendCodePoint(code);
+    return this;
+  }
+
+  /**
    * Delete characters from this <code>StringBuilder</code>.
    * <code>delete(10, 12)</code> will delete 10 and 11, but not 12. It is
    * harmless for end to be larger than length().
@@ -550,15 +386,7 @@
    */
   public StringBuilder delete(int start, int end)
   {
-    if (start < 0 || start > count || start > end)
-      throw new StringIndexOutOfBoundsException(start);
-    if (end > count)
-      end = count;
-    // This will unshare if required.
-    ensureCapacity(count);
-    if (count - end != 0)
-      System.arraycopy(value, end, value, start, count - end);
-    count -= end - start;
+    super.delete(start, end);
     return this;
   }
 
@@ -571,7 +399,8 @@
    */
   public StringBuilder deleteCharAt(int index)
   {
-    return delete(index, index + 1);
+    super.deleteCharAt(index);
+    return this;
   }
 
   /**
@@ -589,19 +418,7 @@
    */
   public StringBuilder replace(int start, int end, String str)
   {
-    if (start < 0 || start > count || start > end)
-      throw new StringIndexOutOfBoundsException(start);
-
-    int len = str.count;
-    // Calculate the difference in 'count' after the replace.
-    int delta = len - (end > count ? count : end) + start;
-    ensureCapacity(count + delta);
-
-    if (delta != 0 && end < count)
-      System.arraycopy(value, end, value, end + delta, count - end);
-
-    str.getChars(0, len, value, start);
-    count += delta;
+    super.replace(start, end, str);
     return this;
   }
 
@@ -672,13 +489,7 @@
   public StringBuilder insert(int offset,
 			      char[] str, int str_offset, int len)
   {
-    if (offset < 0 || offset > count || len < 0
-        || str_offset < 0 || str_offset > str.length - len)
-      throw new StringIndexOutOfBoundsException();
-    ensureCapacity(count + len);
-    System.arraycopy(value, offset, value, offset + len, count - offset);
-    System.arraycopy(str, str_offset, value, offset, len);
-    count += len;
+    super.insert(offset, str, str_offset, len);
     return this;
   }
 
@@ -695,7 +506,8 @@
    */
   public StringBuilder insert(int offset, Object obj)
   {
-    return insert(offset, obj == null ? "null" : obj.toString());
+    super.insert(offset, obj);
+    return this;
   }
 
   /**
@@ -710,15 +522,7 @@
    */
   public StringBuilder insert(int offset, String str)
   {
-    if (offset < 0 || offset > count)
-      throw new StringIndexOutOfBoundsException(offset);
-    if (str == null)
-      str = "null";
-    int len = str.count;
-    ensureCapacity(count + len);
-    System.arraycopy(value, offset, value, offset + len, count - offset);
-    str.getChars(0, len, value, offset);
-    count += len;
+    super.insert(offset, str);
     return this;
   }
 
@@ -732,11 +536,10 @@
    * @return this <code>StringBuilder</code>
    * @throws IndexOutOfBoundsException if offset is out of bounds
    */
-  public synchronized StringBuilder insert(int offset, CharSequence sequence)
+  public StringBuilder insert(int offset, CharSequence sequence)
   {
-    if (sequence == null)
-      sequence = "null";
-    return insert(offset, sequence, 0, sequence.length());
+    super.insert(offset, sequence);
+    return this;
   }
 
   /**
@@ -752,19 +555,10 @@
    * @throws IndexOutOfBoundsException if offset, start,
    * or end are out of bounds
    */
-  public synchronized StringBuilder insert(int offset, CharSequence sequence,
-                      int start, int end)
+  public StringBuilder insert(int offset, CharSequence sequence,
+			      int start, int end)
   {
-    if (sequence == null)
-      sequence = "null";
-    if (start < 0 || end < 0 || start > end || end > sequence.length())
-      throw new IndexOutOfBoundsException();
-    int len = end - start;
-    ensureCapacity(count + len);
-    System.arraycopy(value, offset, value, offset + len, count - offset);
-    for (int i = start; i < end; ++i)
-      value[offset++] = sequence.charAt(i);
-    count += len;
+    super.insert(offset, sequence, start, end);
     return this;
   }
 
@@ -781,7 +575,8 @@
    */
   public StringBuilder insert(int offset, char[] data)
   {
-    return insert(offset, data, 0, data.length);
+    super.insert(offset, data);
+    return this;
   }
 
   /**
@@ -797,7 +592,8 @@
    */
   public StringBuilder insert(int offset, boolean bool)
   {
-    return insert(offset, bool ? "true" : "false");
+    super.insert(offset, bool);
+    return this;
   }
 
   /**
@@ -810,12 +606,7 @@
    */
   public StringBuilder insert(int offset, char ch)
   {
-    if (offset < 0 || offset > count)
-      throw new StringIndexOutOfBoundsException(offset);
-    ensureCapacity(count + 1);
-    System.arraycopy(value, offset, value, offset + 1, count - offset);
-    value[offset] = ch;
-    count++;
+    super.insert(offset, ch);
     return this;
   }
 
@@ -832,7 +623,8 @@
    */
   public StringBuilder insert(int offset, int inum)
   {
-    return insert(offset, String.valueOf(inum));
+    super.insert(offset, inum);
+    return this;
   }
 
   /**
@@ -848,7 +640,8 @@
    */
   public StringBuilder insert(int offset, long lnum)
   {
-    return insert(offset, Long.toString(lnum, 10));
+    super.insert(offset, lnum);
+    return this;
   }
 
   /**
@@ -864,7 +657,8 @@
    */
   public StringBuilder insert(int offset, float fnum)
   {
-    return insert(offset, Float.toString(fnum));
+    super.insert(offset, fnum);
+    return this;
   }
 
   /**
@@ -880,78 +674,11 @@
    */
   public StringBuilder insert(int offset, double dnum)
   {
-    return insert(offset, Double.toString(dnum));
+    super.insert(offset, dnum);
+    return this;
   }
 
   /**
-   * Finds the first instance of a substring in this StringBuilder.
-   *
-   * @param str String to find
-   * @return location (base 0) of the String, or -1 if not found
-   * @throws NullPointerException if str is null
-   * @see #indexOf(String, int)
-   */
-  public int indexOf(String str)
-  {
-    return indexOf(str, 0);
-  }
-
-  /**
-   * Finds the first instance of a String in this StringBuilder, starting at
-   * a given index.  If starting index is less than 0, the search starts at
-   * the beginning of this String.  If the starting index is greater than the
-   * length of this String, or the substring is not found, -1 is returned.
-   *
-   * @param str String to find
-   * @param fromIndex index to start the search
-   * @return location (base 0) of the String, or -1 if not found
-   * @throws NullPointerException if str is null
-   */
-  public int indexOf(String str, int fromIndex)
-  {
-    if (fromIndex < 0)
-      fromIndex = 0;
-    int limit = count - str.count;
-    for ( ; fromIndex <= limit; fromIndex++)
-      if (regionMatches(fromIndex, str))
-        return fromIndex;
-    return -1;
-  }
-
-  /**
-   * Finds the last instance of a substring in this StringBuilder.
-   *
-   * @param str String to find
-   * @return location (base 0) of the String, or -1 if not found
-   * @throws NullPointerException if str is null
-   * @see #lastIndexOf(String, int)
-   */
-  public int lastIndexOf(String str)
-  {
-    return lastIndexOf(str, count - str.count);
-  }
-
-  /**
-   * Finds the last instance of a String in this StringBuilder, starting at a
-   * given index.  If starting index is greater than the maximum valid index,
-   * then the search begins at the end of this String.  If the starting index
-   * is less than zero, or the substring is not found, -1 is returned.
-   *
-   * @param str String to find
-   * @param fromIndex index to start the search
-   * @return location (base 0) of the String, or -1 if not found
-   * @throws NullPointerException if str is null
-   */
-  public int lastIndexOf(String str, int fromIndex)
-  {
-    fromIndex = Math.min(fromIndex, count - str.count);
-    for ( ; fromIndex >= 0; fromIndex--)
-      if (regionMatches(fromIndex, str))
-        return fromIndex;
-    return -1;
-  }
-
-  /**
    * Reverse the characters in this StringBuilder. The same sequence of
    * characters exists, but in the reverse index ordering.
    *
@@ -959,14 +686,7 @@
    */
   public StringBuilder reverse()
   {
-    // Call ensureCapacity to enforce copy-on-write.
-    ensureCapacity(count);
-    for (int i = count >> 1, j = count - i; --i >= 0; ++j)
-      {
-        char c = value[i];
-        value[i] = value[j];
-        value[j] = c;
-      }
+    super.reverse();
     return this;
   }
 
@@ -983,80 +703,4 @@
     return new String(this);
   }
 
-  /**
-   * Predicate which determines if a substring of this matches another String
-   * starting at a specified offset for each String and continuing for a
-   * specified length. This is more efficient than creating a String to call
-   * indexOf on.
-   *
-   * @param toffset index to start comparison at for this String
-   * @param other non-null String to compare to region of this
-   * @return true if regions match, false otherwise
-   * @see #indexOf(String, int)
-   * @see #lastIndexOf(String, int)
-   * @see String#regionMatches(boolean, int, String, int, int)
-   */
-  // GCJ LOCAL: Native to access String internals properly.
-  private native boolean regionMatches(int toffset, String other);
-
-  /**
-   * Get the code point at the specified index.  This is like #charAt(int),
-   * but if the character is the start of a surrogate pair, and the
-   * following character completes the pair, then the corresponding
-   * supplementary code point is returned.
-   * @param index the index of the codepoint to get, starting at 0
-   * @return the codepoint at the specified index
-   * @throws IndexOutOfBoundsException if index is negative or &gt;= length()
-   * @since 1.5
-   */
-  public int codePointAt(int index)
-  {
-    return Character.codePointAt(value, index, count);
-  }
-
-    /**
-   * Get the code point before the specified index.  This is like
-   * #codePointAt(int), but checks the characters at <code>index-1</code> and
-   * <code>index-2</code> to see if they form a supplementary code point.
-   * @param index the index just past the codepoint to get, starting at 0
-   * @return the codepoint at the specified index
-   * @throws IndexOutOfBoundsException if index is negative or &gt;= length()
-   * @since 1.5
-   */
-  public int codePointBefore(int index)
-  {
-    // Character.codePointBefore() doesn't perform this check.  We
-    // could use the CharSequence overload, but this is just as easy.
-    if (index >= count)
-      throw new IndexOutOfBoundsException();
-    return Character.codePointBefore(value, index, 1);
-  }
-
-  /**
-   * Returns the number of Unicode code points in the specified sub sequence.
-   * Surrogate pairs count as one code point.
-   * @param beginIndex the start of the subarray
-   * @param endIndex the index after the last char in the subarray
-   * @return the number of code points
-   * @throws IndexOutOfBoundsException if beginIndex is less than zero or 
-   * greater than endIndex or if endIndex is greater than the length of this 
-   * StringBuilder
-   */
-  public int codePointCount(int beginIndex,int endIndex)
-  {
-    if (beginIndex < 0 || beginIndex > endIndex || endIndex > count)
-      throw new IndexOutOfBoundsException("invalid indices: " + beginIndex
-                                          + ", " + endIndex);
-    return Character.codePointCount(value, beginIndex, endIndex - beginIndex);
-  }
-
-  public void trimToSize()
-  {
-    if (count < value.length)
-      {
-        char[] newValue = new char[count];
-        System.arraycopy(value, 0, newValue, 0, count);
-        value = newValue;
-      }
-  }
 }
Index: java/lang/natAbstractStringBuffer.cc
===================================================================
--- java/lang/natAbstractStringBuffer.cc	(revision 139925)
+++ java/lang/natAbstractStringBuffer.cc	(working copy)
@@ -10,15 +10,14 @@
 
 #include <config.h>
 #include <gcj/cni.h>
-#include <java/lang/StringBuffer.h>
+#include <java/lang/AbstractStringBuffer.h>
 
-java::lang::StringBuffer*
-java::lang::StringBuffer::StringBuffer$append (jint num)
+java::lang::AbstractStringBuffer*
+java::lang::AbstractStringBuffer::append (jint num)
 {
   // Use an array large enough for "-2147483648"; i.e. 11 chars.
   jchar buffer[11];
   int i = _Jv_FormatInt (buffer+11, num);
-  JvSynchronize dummy (this);
   jint needed = count + i;
   ensureCapacity_unsynchronized (needed);
   jchar* dst = elements (value) + count;
@@ -30,7 +29,7 @@
 }
 
 jboolean
-java::lang::StringBuffer::regionMatches(jint toffset, jstring other)
+java::lang::AbstractStringBuffer::regionMatches(jint toffset, jstring other)
 {
   jint len = other->count;
   jchar *tptr = elements(value) + toffset;
Index: Makefile.am
===================================================================
--- Makefile.am	(revision 140114)
+++ Makefile.am	(working copy)
@@ -1071,8 +1071,7 @@
 java/lang/natObject.cc \
 java/lang/natRuntime.cc	\
 java/lang/natString.cc \
-java/lang/natStringBuffer.cc \
-java/lang/natStringBuilder.cc \
+java/lang/natAbstractStringBuffer.cc \
 java/lang/natSystem.cc \
 java/lang/natThread.cc \
 java/lang/natThreadLocal.cc \

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2008-09-10 19:43 [0.98 merge] Generalise native methods for StringBuffer/Builder Andrew John Hughes

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