jdk8-mips64-public/hotspot: src/share/vm/oops/symbolOop.cpp@c89f86385056

6814659: separable cleanups and subroutines for 6655638
Summary: preparatory but separable changes for method handles
Reviewed-by: kvn, never

     1 /*

     2  * Copyright 1997-2005 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 # include "incls/_precompiled.incl"

    26 # include "incls/_symbolOop.cpp.incl"

    28 bool symbolOopDesc::equals(const char* str, int len) const {

    29   int l = utf8_length();

    30   if (l != len) return false;

    31   while (l-- > 0) {

    32     if (str[l] != (char) byte_at(l))

    33       return false;

    34   }

    35   assert(l == -1, "we should be at the beginning");

    36   return true;

    37 }

    39 char* symbolOopDesc::as_C_string(char* buf, int size) const {

    40   if (size > 0) {

    41     int len = MIN2(size - 1, utf8_length());

    42     for (int i = 0; i < len; i++) {

    43       buf[i] = byte_at(i);

    44     }

    45     buf[len] = '\0';

    46   }

    47   return buf;

    48 }

    50 char* symbolOopDesc::as_C_string() const {

    51   int len = utf8_length();

    52   char* str = NEW_RESOURCE_ARRAY(char, len + 1);

    53   return as_C_string(str, len + 1);

    54 }

    56 char* symbolOopDesc::as_C_string_flexible_buffer(Thread* t,

    57                                                  char* buf, int size) const {

    58   char* str;

    59   int len = utf8_length();

    60   int buf_len = len + 1;

    61   if (size < buf_len) {

    62     str = NEW_RESOURCE_ARRAY(char, buf_len);

    63   } else {

    64     str = buf;

    65   }

    66   return as_C_string(str, buf_len);

    67 }

    69 void symbolOopDesc::print_symbol_on(outputStream* st) {

    70   st = st ? st : tty;

    71   int length = UTF8::unicode_length((const char*)bytes(), utf8_length());

    72   const char *ptr = (const char *)bytes();

    73   jchar value;

    74   for (int index = 0; index < length; index++) {

    75     ptr = UTF8::next(ptr, &value);

    76     if (value >= 32 && value < 127 || value == '\'' || value == '\\') {

    77       st->put(value);

    78     } else {

    79       st->print("\\u%04x", value);

    80     }

    81   }

    82 }

    84 jchar* symbolOopDesc::as_unicode(int& length) const {

    85   symbolOopDesc* this_ptr = (symbolOopDesc*)this;

    86   length = UTF8::unicode_length((char*)this_ptr->bytes(), utf8_length());

    87   jchar* result = NEW_RESOURCE_ARRAY(jchar, length);

    88   if (length > 0) {

    89     UTF8::convert_to_unicode((char*)this_ptr->bytes(), result, length);

    90   }

    91   return result;

    92 }

    94 const char* symbolOopDesc::as_klass_external_name(char* buf, int size) const {

    95   if (size > 0) {

    96     char* str    = as_C_string(buf, size);

    97     int   length = (int)strlen(str);

    98     // Turn all '/'s into '.'s (also for array klasses)

    99     for (int index = 0; index < length; index++) {

   100       if (str[index] == '/') {

   101         str[index] = '.';

   102       }

   103     }

   104     return str;

   105   } else {

   106     return buf;

   107   }

   108 }

   110 const char* symbolOopDesc::as_klass_external_name() const {

   111   char* str    = as_C_string();

   112   int   length = (int)strlen(str);

   113   // Turn all '/'s into '.'s (also for array klasses)

   114   for (int index = 0; index < length; index++) {

   115     if (str[index] == '/') {

   116       str[index] = '.';

   117     }

   118   }

   119   return str;

   120 }

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