diff src/share/vm/libadt/set.cpp @ 0:a61af66fc99e jdk7-b24

Initial load
author duke
date Sat, 01 Dec 2007 00:00:00 +0000
parents
children c18cbe5936b8
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/share/vm/libadt/set.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,166 @@
+/*
+ * Copyright 1997-2006 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+// Sets - An Abstract Data Type
+
+#include "incls/_precompiled.incl"
+#include "incls/_set.cpp.incl"
+
+// %%%%% includes not needed with AVM framework - Ungar
+// #include "port.hpp"
+//IMPLEMENTATION
+// #include "set.hpp"
+
+#include <stdio.h>
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+
+// Not needed and it causes terouble for gcc.
+//
+// #include <iostream.h>
+
+//-------------------------Virtual Functions-----------------------------------
+// These functions MUST be implemented by the inheriting class.
+class SparseSet;
+/* Removed for MCC BUG
+   Set::operator const SparseSet*() const { assert(0); return NULL; } */
+const SparseSet *Set::asSparseSet() const { assert(0); return NULL; }
+class VectorSet;
+/* Removed for MCC BUG
+   Set::operator const VectorSet*() const { assert(0); return NULL; } */
+const VectorSet *Set::asVectorSet() const { assert(0); return NULL; }
+class ListSet;
+/* Removed for MCC BUG
+   Set::operator const ListSet*() const { assert(0); return NULL; } */
+const ListSet *Set::asListSet() const { assert(0); return NULL; }
+class CoSet;
+/* Removed for MCC BUG
+   Set::operator const CoSet*() const { assert(0); return NULL; } */
+const CoSet *Set::asCoSet() const { assert(0); return NULL; }
+
+//------------------------------setstr-----------------------------------------
+// Create a string with a printable representation of a set.
+// The caller must deallocate the string.
+char *Set::setstr() const
+{
+  if( !this ) return os::strdup("{no set}");
+  Set &set = clone();           // Virtually copy the basic set.
+  set.Sort();                   // Sort elements for in-order retrieval
+
+  uint len = 128;               // Total string space
+  char *buf = NEW_C_HEAP_ARRAY(char,len);// Some initial string space
+
+  register char *s = buf;       // Current working string pointer
+  *s++ = '{';
+  *s = '\0';
+
+  // For all elements of the Set
+  uint hi = (uint)-2, lo = (uint)-2;
+  for( SetI i(&set); i.test(); ++i ) {
+    if( hi+1 == i.elem ) {        // Moving sequentially thru range?
+      hi = i.elem;                // Yes, just update hi end of range
+    } else {                      // Else range ended
+      if( buf+len-s < 25 ) {      // Generous trailing space for upcoming numbers
+        int offset = (int)(s-buf);// Not enuf space; compute offset into buffer
+        len <<= 1;                // Double string size
+        buf = REALLOC_C_HEAP_ARRAY(char,buf,len); // Reallocate doubled size
+        s = buf+offset;         // Get working pointer into new bigger buffer
+      }
+      if( lo != (uint)-2 ) {    // Startup?  No!  Then print previous range.
+        if( lo != hi ) sprintf(s,"%d-%d,",lo,hi);
+        else sprintf(s,"%d,",lo);
+        s += strlen(s);         // Advance working string
+      }
+      hi = lo = i.elem;
+    }
+  }
+  if( lo != (uint)-2 ) {
+    if( buf+len-s < 25 ) {      // Generous trailing space for upcoming numbers
+      int offset = (int)(s-buf);// Not enuf space; compute offset into buffer
+      len <<= 1;                // Double string size
+      buf = (char*)ReallocateHeap(buf,len); // Reallocate doubled size
+      s = buf+offset;           // Get working pointer into new bigger buffer
+    }
+    if( lo != hi ) sprintf(s,"%d-%d}",lo,hi);
+    else sprintf(s,"%d}",lo);
+  } else strcat(s,"}");
+  // Don't delete the clone 'set' since it is allocated on Arena.
+  return buf;
+}
+
+//------------------------------print------------------------------------------
+// Handier print routine
+void Set::print() const
+{
+  char *printable_set = setstr();
+  tty->print_cr(printable_set);
+  FreeHeap(printable_set);
+}
+
+//------------------------------parse------------------------------------------
+// Convert a textual representation of a Set, to a Set and union into "this"
+// Set.  Return the amount of text parsed in "len", or zero in "len".
+int Set::parse(const char *s)
+{
+  register char c;              // Parse character
+  register const char *t = s;   // Save the starting position of s.
+  do c = *s++;                  // Skip characters
+  while( c && (c <= ' ') );     // Till no more whitespace or EOS
+  if( c != '{' ) return 0;      // Oops, not a Set openner
+  if( *s == '}' ) return 2;     // The empty Set
+
+  // Sets are filled with values of the form "xx," or "xx-yy," with the comma
+  // a "}" at the very end.
+  while( 1 ) {                  // While have elements in the Set
+    char *u;                    // Pointer to character ending parse
+    uint hi, i;                 // Needed for range handling below
+    uint elem = (uint)strtoul(s,&u,10);// Get element
+    if( u == s ) return 0;      // Bogus crude
+    s = u;                      // Skip over the number
+    c = *s++;                   // Get the number seperator
+    switch ( c ) {              // Different seperators
+    case '}':                   // Last simple element
+    case ',':                   // Simple element
+      (*this) <<= elem;         // Insert the simple element into the Set
+      break;                    // Go get next element
+    case '-':                   // Range
+      hi = (uint)strtoul(s,&u,10); // Get element
+      if( u == s ) return 0;    // Bogus crude
+      for( i=elem; i<=hi; i++ )
+        (*this) <<= i;          // Insert the entire range into the Set
+      s = u;                    // Skip over the number
+      c = *s++;                 // Get the number seperator
+      break;
+    }
+    if( c == '}' ) break;       // End of the Set
+    if( c != ',' ) return 0;    // Bogus garbage
+  }
+  return (int)(s-t);            // Return length parsed
+}
+
+//------------------------------Iterator---------------------------------------
+SetI_::~SetI_()
+{
+}