From b4d49f49bf21837bef59aa30788e2e9bf2ce2e3b Mon Sep 17 00:00:00 2001
From: Per Bothner <per@bothner.com>
Date: Wed, 11 Aug 2004 23:53:42 -0700
Subject: javaprims.h (_Jv_Utf8Const): Change struct to a class, with private
 fields and access methods.

	* gcj/javaprims.h (_Jv_Utf8Const): Change struct to a class,
	with private fields and access methods.
	(_Jv_NewStringUTF, _Jv_hashUtf8String): New function declarations.
	* gcj/cni.h (_Jv_NewStringUTF): Move to javaprims.h.
	* prims.cc (_Jv_Utf8COnst::init): New method implementation.
	( _Jv_makeUtf8Const): Rewrite using new constructors.
	(hashUtf8String): Rename to +_Jv_hashUtf8String and make non-static.
	* defineclass.cc: Use new _Utf8Const access/convenience methods.
	* jni.cc: Likewise.
	* resolve.cc: Likewise.
	* gcj/field.h: Likewise.
	* include/jvm.h: Likewise.
	* java/lang/Class.h: Likewise.
	* java/lang/natClass.cc: Likwise.
	* java/lang/natClassLoader.cc: Likewise
	* java/lang/reflect/natMethod.cc: Likewise
	* verify.cc: Likewise.
	(_Jv_BytecodeVerifier::make_utf8_const):  Optimize.
	(~_Jv_BytecodeVerifier):  Don't need second _Jv_Free call.

From-SVN: r85854
---
 libjava/gcj/cni.h       |  1 -
 libjava/gcj/field.h     |  2 +-
 libjava/gcj/javaprims.h | 34 +++++++++++++++++++++++++++++++++-
 3 files changed, 34 insertions(+), 3 deletions(-)

(limited to 'libjava/gcj')

diff --git a/libjava/gcj/cni.h b/libjava/gcj/cni.h
index b9ee382..ee39738 100644
--- a/libjava/gcj/cni.h
+++ b/libjava/gcj/cni.h
@@ -20,7 +20,6 @@ details.  */
 
 #include <string.h>
 
-extern "C" jstring _Jv_NewStringUTF (const char *bytes);
 extern "C" void _Jv_InitClass (jclass);
 extern "C" void *_Jv_AllocBytes (jsize size) __attribute__((__malloc__));
 
diff --git a/libjava/gcj/field.h b/libjava/gcj/field.h
index 70c5901..bd6b2c3 100644
--- a/libjava/gcj/field.h
+++ b/libjava/gcj/field.h
@@ -68,7 +68,7 @@ struct _Jv_Field
     { 
       if (!isResolved ()) 
 	{
-	  char first = ((_Jv_Utf8Const*)type)->data[0]; 
+	  char first = ((_Jv_Utf8Const*)type)->first(); 
 	  return first == '[' || first == 'L';
 	}
       else
diff --git a/libjava/gcj/javaprims.h b/libjava/gcj/javaprims.h
index 9cf2741..09e0c55 100644
--- a/libjava/gcj/javaprims.h
+++ b/libjava/gcj/javaprims.h
@@ -472,10 +472,13 @@ extern jint _Jv_FormatInt (jchar* bufend, jint num);
 extern "C" jchar* _Jv_GetStringChars (jstring str);
 extern "C" void _Jv_MonitorEnter (jobject);
 extern "C" void _Jv_MonitorExit (jobject);
+extern "C" jstring _Jv_NewStringUTF (const char *bytes)
+  __attribute__((__malloc__));
 extern "C" jstring _Jv_NewStringLatin1(const char*, jsize)
   __attribute__((__malloc__));
 extern "C" jsize _Jv_GetStringUTFLength (jstring);
 extern "C" jsize _Jv_GetStringUTFRegion (jstring, jsize, jsize, char *);
+extern "C" jint _Jv_hashUtf8String (char*, int);
 
 extern jint _Jv_CreateJavaVM (void* /*vm_args*/);
 
@@ -500,11 +503,40 @@ typedef unsigned short _Jv_ushort __attribute__((__mode__(__HI__)));
 typedef unsigned int _Jv_uint __attribute__((__mode__(__SI__)));
 typedef unsigned int _Jv_ulong __attribute__((__mode__(__DI__)));
 
-struct _Jv_Utf8Const
+class _Jv_Utf8Const
 {
   _Jv_ushort hash;
   _Jv_ushort length;	/* In bytes, of data portion, without final '\0'. */
   char data[1];		/* In Utf8 format, with final '\0'. */
+ public:
+  /** Return same value of java.lang.String's hashCode. */
+  jint hash32() { return _Jv_hashUtf8String(data, length); }
+  /** Return a hash code that has at least 16 bits of information. */
+  _Jv_ushort hash16 () { return hash; }
+  /** Return a hash code that has at least 8 bits of information. */
+  _Jv_ushort hash8 () { return hash; }
+  /** Length in bytes of the UTF8-encoding. */
+  _Jv_ushort len () const { return length; }
+  /** Pointer to the first byte in the NUL-terminated UTF8-encoding. */
+  char* chars() { return data; }
+  /** Pointer to the NUL byte that terminated the UTF8-encoding. */
+  char* limit() { return data+length; }
+  /** Return the first byte in the UTF8-encoding. */
+  char first() const { return data[0]; }
+  /** Create a (non-interned) java.lang.String from this UTF8Const. */
+  jstring toString() { return _Jv_NewStringUTF(data); }
+  /** Given an UTF8 string, how many bytes needed for a UTF8Const,
+      including struct header, and final NUL.  I.e. what to pas to malloc. */
+  static int space_needed (char *, int len)
+  { return sizeof (_Jv_Utf8Const) + len + 1; }
+  /** Given an allocated _Jv_Utf8Const, copy / fill it in. */
+  void init (char *s, int len);
+  friend jboolean _Jv_equalUtf8Consts (const _Jv_Utf8Const*, const _Jv_Utf8Const *);
+  friend jboolean _Jv_equal (_Jv_Utf8Const*, jstring, jint);
+  friend jboolean _Jv_equaln (_Jv_Utf8Const*, jstring, jint);
+  friend _Jv_Utf8Const *_Jv_makeUtf8Const (char*, int);
+  friend _Jv_Utf8Const *_Jv_makeUtf8Const (jstring);
+  friend jstring _Jv_NewStringUtf8Const (_Jv_Utf8Const*);
 };
 
 
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