1/* 2 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25#include "precompiled.hpp" 26#include "libadt/set.hpp" 27#include "memory/allocation.inline.hpp" 28 29// Sets - An Abstract Data Type 30 31#include <stdio.h> 32#include <assert.h> 33#include <string.h> 34#include <stdlib.h> 35 36//-------------------------Virtual Functions----------------------------------- 37// These functions MUST be implemented by the inheriting class. 38class SparseSet; 39/* Removed for MCC BUG 40 Set::operator const SparseSet*() const { assert(0); return NULL; } */ 41const SparseSet *Set::asSparseSet() const { assert(0); return NULL; } 42class VectorSet; 43/* Removed for MCC BUG 44 Set::operator const VectorSet*() const { assert(0); return NULL; } */ 45const VectorSet *Set::asVectorSet() const { assert(0); return NULL; } 46class ListSet; 47/* Removed for MCC BUG 48 Set::operator const ListSet*() const { assert(0); return NULL; } */ 49const ListSet *Set::asListSet() const { assert(0); return NULL; } 50class CoSet; 51/* Removed for MCC BUG 52 Set::operator const CoSet*() const { assert(0); return NULL; } */ 53const CoSet *Set::asCoSet() const { assert(0); return NULL; } 54 55//------------------------------setstr----------------------------------------- 56// Create a string with a printable representation of a set. 57// The caller must deallocate the string. 58char *Set::setstr() const 59{ 60 if( this == NULL ) return os::strdup("{no set}"); 61 Set &set = clone(); // Virtually copy the basic set. 62 set.Sort(); // Sort elements for in-order retrieval 63 64 uint len = 128; // Total string space 65 char *buf = NEW_C_HEAP_ARRAY(char,len, mtCompiler);// Some initial string space 66 67 register char *s = buf; // Current working string pointer 68 *s++ = '{'; 69 *s = '\0'; 70 71 // For all elements of the Set 72 uint hi = (uint)-2, lo = (uint)-2; 73 for( SetI i(&set); i.test(); ++i ) { 74 if( hi+1 == i.elem ) { // Moving sequentially thru range? 75 hi = i.elem; // Yes, just update hi end of range 76 } else { // Else range ended 77 if( buf+len-s < 25 ) { // Generous trailing space for upcoming numbers 78 int offset = (int)(s-buf);// Not enuf space; compute offset into buffer 79 len <<= 1; // Double string size 80 buf = REALLOC_C_HEAP_ARRAY(char,buf,len, mtCompiler); // Reallocate doubled size 81 s = buf+offset; // Get working pointer into new bigger buffer 82 } 83 if( lo != (uint)-2 ) { // Startup? No! Then print previous range. 84 if( lo != hi ) sprintf(s,"%d-%d,",lo,hi); 85 else sprintf(s,"%d,",lo); 86 s += strlen(s); // Advance working string 87 } 88 hi = lo = i.elem; 89 } 90 } 91 if( lo != (uint)-2 ) { 92 if( buf+len-s < 25 ) { // Generous trailing space for upcoming numbers 93 int offset = (int)(s-buf);// Not enuf space; compute offset into buffer 94 len <<= 1; // Double string size 95 buf = (char*)ReallocateHeap(buf,len, mtCompiler); // Reallocate doubled size 96 s = buf+offset; // Get working pointer into new bigger buffer 97 } 98 if( lo != hi ) sprintf(s,"%d-%d}",lo,hi); 99 else sprintf(s,"%d}",lo); 100 } else strcat(s,"}"); 101 // Don't delete the clone 'set' since it is allocated on Arena. 102 return buf; 103} 104 105//------------------------------print------------------------------------------ 106// Handier print routine 107void Set::print() const 108{ 109 char *printable_set = setstr(); 110 tty->print_cr("%s", printable_set); 111 FreeHeap(printable_set); 112} 113 114//------------------------------parse------------------------------------------ 115// Convert a textual representation of a Set, to a Set and union into "this" 116// Set. Return the amount of text parsed in "len", or zero in "len". 117int Set::parse(const char *s) 118{ 119 register char c; // Parse character 120 register const char *t = s; // Save the starting position of s. 121 do c = *s++; // Skip characters 122 while( c && (c <= ' ') ); // Till no more whitespace or EOS 123 if( c != '{' ) return 0; // Oops, not a Set openner 124 if( *s == '}' ) return 2; // The empty Set 125 126 // Sets are filled with values of the form "xx," or "xx-yy," with the comma 127 // a "}" at the very end. 128 while( 1 ) { // While have elements in the Set 129 char *u; // Pointer to character ending parse 130 uint hi, i; // Needed for range handling below 131 uint elem = (uint)strtoul(s,&u,10);// Get element 132 if( u == s ) return 0; // Bogus crude 133 s = u; // Skip over the number 134 c = *s++; // Get the number seperator 135 switch ( c ) { // Different seperators 136 case '}': // Last simple element 137 case ',': // Simple element 138 (*this) <<= elem; // Insert the simple element into the Set 139 break; // Go get next element 140 case '-': // Range 141 hi = (uint)strtoul(s,&u,10); // Get element 142 if( u == s ) return 0; // Bogus crude 143 for( i=elem; i<=hi; i++ ) 144 (*this) <<= i; // Insert the entire range into the Set 145 s = u; // Skip over the number 146 c = *s++; // Get the number seperator 147 break; 148 } 149 if( c == '}' ) break; // End of the Set 150 if( c != ',' ) return 0; // Bogus garbage 151 } 152 return (int)(s-t); // Return length parsed 153} 154 155//------------------------------Iterator--------------------------------------- 156SetI_::~SetI_() 157{ 158} 159