hotspot/src/share/vm/utilities/xmlstream.cpp
author jcoomes
Sun, 11 Oct 2009 16:19:25 -0700
changeset 5402 c51fd0c1d005
parent 768 d0bebc7eefc2
child 5547 f4b087cbb361
permissions -rw-r--r--
6888953: some calls to function-like macros are missing semicolons Reviewed-by: pbk, kvn
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/*
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 * Copyright 2002-2007 Sun Microsystems, Inc.  All Rights Reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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#include "incls/_precompiled.incl"
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#include "incls/_xmlstream.cpp.incl"
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void xmlStream::initialize(outputStream* out) {
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  _out = out;
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  _last_flush = 0;
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  _markup_state = BODY;
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  _text_init._outer_xmlStream = this;
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  _text = &_text_init;
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#ifdef ASSERT
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  _element_depth = 0;
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  int   init_len = 100;
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  char* init_buf = NEW_C_HEAP_ARRAY(char, init_len);
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  _element_close_stack_low  = init_buf;
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  _element_close_stack_high = init_buf + init_len;
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  _element_close_stack_ptr  = init_buf + init_len - 1;
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  _element_close_stack_ptr[0] = '\0';
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#endif
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  // Make sure each log uses the same base for time stamps.
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  if (is_open()) {
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    _out->time_stamp().update_to(1);
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  }
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}
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#ifdef ASSERT
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xmlStream::~xmlStream() {
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  FREE_C_HEAP_ARRAY(char, _element_close_stack_low);
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}
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#endif
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// Pass the given chars directly to _out.
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void xmlStream::write(const char* s, size_t len) {
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  if (!is_open())  return;
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  out()->write(s, len);
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  update_position(s, len);
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}
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// Pass the given chars directly to _out, except that
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// we watch for special "<&>" chars.
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// This is suitable for either attribute text or for body text.
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// We don't fool with "<![CDATA[" quotes, just single-character entities.
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// This makes it easier for dumb tools to parse the output.
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void xmlStream::write_text(const char* s, size_t len) {
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  if (!is_open())  return;
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  size_t written = 0;
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  // All normally printed material goes inside XML quotes.
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  // This leaves the output free to include markup also.
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  // Scan the string looking for inadvertant "<&>" chars
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  for (size_t i = 0; i < len; i++) {
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    char ch = s[i];
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    // Escape special chars.
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    const char* esc = NULL;
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    switch (ch) {
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      // These are important only in attrs, but we do them always:
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    case '\'': esc = "&apos;"; break;
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    case '"':  esc = "&quot;"; break;
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    case '<':  esc = "&lt;";   break;
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    case '&':  esc = "&amp;";  break;
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      // This is a freebie.
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    case '>':  esc = "&gt;";   break;
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    }
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    if (esc != NULL) {
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      if (written < i) {
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        out()->write(&s[written], i - written);
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        written = i;
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      }
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      out()->print_raw(esc);
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      written++;
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    }
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  }
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  // Print the clean remainder.  Usually, it is all of s.
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  if (written < len) {
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    out()->write(&s[written], len - written);
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  }
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}
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// ------------------------------------------------------------------
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// Outputs XML text, with special characters quoted.
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void xmlStream::text(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  va_text(format, ap);
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  va_end(ap);
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}
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#define BUFLEN 2*K   /* max size of output of individual print methods */
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// ------------------------------------------------------------------
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void xmlStream::va_tag(bool push, const char* format, va_list ap) {
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  assert_if_no_error(!inside_attrs(), "cannot print tag inside attrs");
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  char buffer[BUFLEN];
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  size_t len;
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  const char* kind = do_vsnprintf(buffer, BUFLEN, format, ap, false, len);
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  see_tag(kind, push);
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  print_raw("<");
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  write(kind, len);
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  _markup_state = (push ? HEAD : ELEM);
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}
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#ifdef ASSERT
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/// Debugging goo to make sure element tags nest properly.
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// ------------------------------------------------------------------
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void xmlStream::see_tag(const char* tag, bool push) {
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  assert_if_no_error(!inside_attrs(), "cannot start new element inside attrs");
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  if (!push)  return;
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  // tag goes up until either null or space:
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  const char* tag_end = strchr(tag, ' ');
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  size_t tag_len = (tag_end == NULL) ? strlen(tag) : tag_end - tag;
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  assert(tag_len > 0, "tag must not be empty");
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  // push the tag onto the stack, pulling down the pointer
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  char* old_ptr  = _element_close_stack_ptr;
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  char* old_low  = _element_close_stack_low;
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  char* push_ptr = old_ptr - (tag_len+1);
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  if (push_ptr < old_low) {
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    int old_len = _element_close_stack_high - old_ptr;
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    int new_len = old_len * 2;
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    if (new_len < 100)  new_len = 100;
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    char* new_low  = NEW_C_HEAP_ARRAY(char, new_len);
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    char* new_high = new_low + new_len;
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    char* new_ptr  = new_high - old_len;
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    memcpy(new_ptr, old_ptr, old_len);
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    _element_close_stack_high = new_high;
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    _element_close_stack_low  = new_low;
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    _element_close_stack_ptr  = new_ptr;
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    FREE_C_HEAP_ARRAY(char, old_low);
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    push_ptr = new_ptr - (tag_len+1);
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  }
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  assert(push_ptr >= _element_close_stack_low, "in range");
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  memcpy(push_ptr, tag, tag_len);
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  push_ptr[tag_len] = 0;
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  _element_close_stack_ptr = push_ptr;
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  _element_depth += 1;
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}
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// ------------------------------------------------------------------
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void xmlStream::pop_tag(const char* tag) {
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  assert_if_no_error(!inside_attrs(), "cannot close element inside attrs");
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  assert(_element_depth > 0, "must be in an element to close");
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  assert(*tag != 0, "tag must not be empty");
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  char* cur_tag = _element_close_stack_ptr;
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  bool  bad_tag = false;
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  while (*cur_tag != 0 && strcmp(cur_tag, tag) != 0) {
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    this->print_cr("</%s> <!-- missing closing tag -->", cur_tag);
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    _element_close_stack_ptr = (cur_tag += strlen(cur_tag) + 1);
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    _element_depth -= 1;
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    bad_tag = true;
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  }
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  if (*cur_tag == 0) {
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    bad_tag = true;
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  } else {
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    // Pop the stack, by skipping over the tag and its null.
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    _element_close_stack_ptr = cur_tag + strlen(cur_tag) + 1;
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    _element_depth -= 1;
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  }
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  if (bad_tag && !VMThread::should_terminate() && !is_error_reported())
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    assert(false, "bad tag in log");
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}
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#endif
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// ------------------------------------------------------------------
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// First word in formatted string is element kind, and any subsequent
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// words must be XML attributes.  Outputs "<kind .../>".
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void xmlStream::elem(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  va_elem(format, ap);
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  va_end(ap);
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}
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// ------------------------------------------------------------------
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void xmlStream::va_elem(const char* format, va_list ap) {
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  va_begin_elem(format, ap);
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  end_elem();
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}
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// ------------------------------------------------------------------
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// First word in formatted string is element kind, and any subsequent
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// words must be XML attributes.  Outputs "<kind ...", not including "/>".
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void xmlStream::begin_elem(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  va_tag(false, format, ap);
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  va_end(ap);
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}
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// ------------------------------------------------------------------
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void xmlStream::va_begin_elem(const char* format, va_list ap) {
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  va_tag(false, format, ap);
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}
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// ------------------------------------------------------------------
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// Outputs "/>".
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void xmlStream::end_elem() {
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  assert(_markup_state == ELEM, "misplaced end_elem");
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  print_raw("/>\n");
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  _markup_state = BODY;
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}
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// ------------------------------------------------------------------
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// Outputs formatted text, followed by "/>".
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void xmlStream::end_elem(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  out()->vprint(format, ap);
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  va_end(ap);
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  end_elem();
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}
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// ------------------------------------------------------------------
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// First word in formatted string is element kind, and any subsequent
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// words must be XML attributes.  Outputs "<kind ...>".
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void xmlStream::head(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  va_head(format, ap);
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  va_end(ap);
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}
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// ------------------------------------------------------------------
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void xmlStream::va_head(const char* format, va_list ap) {
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  va_begin_head(format, ap);
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  end_head();
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}
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// ------------------------------------------------------------------
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// First word in formatted string is element kind, and any subsequent
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// words must be XML attributes.  Outputs "<kind ...", not including ">".
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void xmlStream::begin_head(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  va_tag(true, format, ap);
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  va_end(ap);
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}
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   269
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// ------------------------------------------------------------------
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void xmlStream::va_begin_head(const char* format, va_list ap) {
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  va_tag(true, format, ap);
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}
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// ------------------------------------------------------------------
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// Outputs ">".
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void xmlStream::end_head() {
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  assert(_markup_state == HEAD, "misplaced end_head");
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  print_raw(">\n");
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  _markup_state = BODY;
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}
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// ------------------------------------------------------------------
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// Outputs formatted text, followed by ">".
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void xmlStream::end_head(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  out()->vprint(format, ap);
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  va_end(ap);
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  end_head();
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}
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   293
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   294
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// ------------------------------------------------------------------
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// Outputs "</kind>".
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void xmlStream::tail(const char* kind) {
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  pop_tag(kind);
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  print_raw("</");
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  print_raw(kind);
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  print_raw(">\n");
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}
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   303
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// ------------------------------------------------------------------
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   305
// Outputs "<kind_done ... stamp='D.DD'/> </kind>".
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void xmlStream::done(const char* format, ...) {
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  va_list ap;
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  va_start(ap, format);
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  va_done(format, ap);
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  va_end(ap);
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}
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   312
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// ------------------------------------------------------------------
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   314
// Outputs "<kind_done stamp='D.DD'/> </kind>".
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   315
// Because done_raw() doesn't need to format strings, it's simpler than
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   316
// done(), and can be called safely by fatal error handler.
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   317
void xmlStream::done_raw(const char* kind) {
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   318
  print_raw("<");
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   319
  print_raw(kind);
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   320
  print_raw("_done stamp='");
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   321
  out()->stamp();
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   322
  print_raw_cr("'/>");
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   323
  print_raw("</");
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   324
  print_raw(kind);
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   325
  print_raw_cr(">");
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   326
}
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   327
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   328
// ------------------------------------------------------------------
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   329
void xmlStream::va_done(const char* format, va_list ap) {
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   330
  char buffer[200];
5402
c51fd0c1d005 6888953: some calls to function-like macros are missing semicolons
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diff changeset
   331
  guarantee(strlen(format) + 10 < sizeof(buffer), "bigger format buffer");
1
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   332
  const char* kind = format;
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   333
  const char* kind_end = strchr(kind, ' ');
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   334
  size_t kind_len = (kind_end != NULL) ? (kind_end - kind) : strlen(kind);
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   335
  strncpy(buffer, kind, kind_len);
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   336
  strcpy(buffer + kind_len, "_done");
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   337
  strcat(buffer, format + kind_len);
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   338
  // Output the trailing event with the timestamp.
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   339
  va_begin_elem(buffer, ap);
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   340
  stamp();
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   341
  end_elem();
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   342
  // Output the tail-tag of the enclosing element.
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   343
  buffer[kind_len] = 0;
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   344
  tail(buffer);
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   345
}
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   346
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   347
// Output a timestamp attribute.
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   348
void xmlStream::stamp() {
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   349
  assert_if_no_error(inside_attrs(), "stamp must be an attribute");
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   350
  print_raw(" stamp='");
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   351
  out()->stamp();
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   352
  print_raw("'");
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   353
}
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   354
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   355
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   356
// ------------------------------------------------------------------
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   357
// Output a method attribute, in the form " method='pkg/cls name sig'".
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   358
// This is used only when there is no ciMethod available.
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   359
void xmlStream::method(methodHandle method) {
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   360
  assert_if_no_error(inside_attrs(), "printing attributes");
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   361
  if (method.is_null())  return;
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   362
  print_raw(" method='");
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   363
  method_text(method);
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   364
  print("' bytes='%d'", method->code_size());
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   365
  print(" count='%d'", method->invocation_count());
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   366
  int bec = method->backedge_count();
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   367
  if (bec != 0)  print(" backedge_count='%d'", bec);
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   368
  print(" iicount='%d'", method->interpreter_invocation_count());
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   369
  int throwouts = method->interpreter_throwout_count();
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   370
  if (throwouts != 0)  print(" throwouts='%d'", throwouts);
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   371
  methodDataOop mdo = method->method_data();
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   372
  if (mdo != NULL) {
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   373
    uint cnt;
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   374
    cnt = mdo->decompile_count();
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   375
    if (cnt != 0)  print(" decompiles='%d'", cnt);
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   376
    for (uint reason = 0; reason < mdo->trap_reason_limit(); reason++) {
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   377
      cnt = mdo->trap_count(reason);
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   378
      if (cnt != 0)  print(" %s_traps='%d'", Deoptimization::trap_reason_name(reason), cnt);
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   379
    }
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   380
    cnt = mdo->overflow_trap_count();
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   381
    if (cnt != 0)  print(" overflow_traps='%d'", cnt);
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diff changeset
   382
    cnt = mdo->overflow_recompile_count();
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diff changeset
   383
    if (cnt != 0)  print(" overflow_recompiles='%d'", cnt);
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parents:
diff changeset
   384
  }
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parents:
diff changeset
   385
}
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parents:
diff changeset
   386
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parents:
diff changeset
   387
void xmlStream::method_text(methodHandle method) {
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parents:
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   388
  assert_if_no_error(inside_attrs(), "printing attributes");
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parents:
diff changeset
   389
  if (method.is_null())  return;
489c9b5090e2 Initial load
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   390
  //method->print_short_name(text());
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   391
  method->method_holder()->klass_part()->name()->print_symbol_on(text());
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parents:
diff changeset
   392
  print_raw(" ");  // " " is easier for tools to parse than "::"
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parents:
diff changeset
   393
  method->name()->print_symbol_on(text());
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parents:
diff changeset
   394
  print_raw(" ");  // separator
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parents:
diff changeset
   395
  method->signature()->print_symbol_on(text());
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diff changeset
   396
}
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parents:
diff changeset
   397
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parents:
diff changeset
   398
489c9b5090e2 Initial load
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parents:
diff changeset
   399
// ------------------------------------------------------------------
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parents:
diff changeset
   400
// Output a klass attribute, in the form " klass='pkg/cls'".
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parents:
diff changeset
   401
// This is used only when there is no ciKlass available.
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parents:
diff changeset
   402
void xmlStream::klass(KlassHandle klass) {
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parents:
diff changeset
   403
  assert_if_no_error(inside_attrs(), "printing attributes");
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parents:
diff changeset
   404
  if (klass.is_null())  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   405
  print_raw(" klass='");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   406
  klass_text(klass);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   407
  print_raw("'");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   408
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   409
489c9b5090e2 Initial load
duke
parents:
diff changeset
   410
void xmlStream::klass_text(KlassHandle klass) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   411
  assert_if_no_error(inside_attrs(), "printing attributes");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   412
  if (klass.is_null())  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   413
  //klass->print_short_name(log->out());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   414
  klass->name()->print_symbol_on(out());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   415
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   416
489c9b5090e2 Initial load
duke
parents:
diff changeset
   417
void xmlStream::name(symbolHandle name) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   418
  assert_if_no_error(inside_attrs(), "printing attributes");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   419
  if (name.is_null())  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   420
  print_raw(" name='");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   421
  name_text(name);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   422
  print_raw("'");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   423
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   424
489c9b5090e2 Initial load
duke
parents:
diff changeset
   425
void xmlStream::name_text(symbolHandle name) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   426
  assert_if_no_error(inside_attrs(), "printing attributes");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   427
  if (name.is_null())  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   428
  //name->print_short_name(text());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   429
  name->print_symbol_on(text());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   430
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   431
489c9b5090e2 Initial load
duke
parents:
diff changeset
   432
void xmlStream::object(const char* attr, Handle x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   433
  assert_if_no_error(inside_attrs(), "printing attributes");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   434
  if (x.is_null())  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   435
  print_raw(" ");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   436
  print_raw(attr);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   437
  print_raw("='");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   438
  object_text(x);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   439
  print_raw("'");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   440
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   441
489c9b5090e2 Initial load
duke
parents:
diff changeset
   442
void xmlStream::object_text(Handle x) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   443
  assert_if_no_error(inside_attrs(), "printing attributes");
489c9b5090e2 Initial load
duke
parents:
diff changeset
   444
  if (x.is_null())  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   445
  //x->print_value_on(text());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   446
  if (x->is_method())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   447
    method_text(methodOop(x()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   448
  else if (x->is_klass())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   449
    klass_text(klassOop(x()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   450
  else if (x->is_symbol())
489c9b5090e2 Initial load
duke
parents:
diff changeset
   451
    name_text(symbolOop(x()));
489c9b5090e2 Initial load
duke
parents:
diff changeset
   452
  else
489c9b5090e2 Initial load
duke
parents:
diff changeset
   453
    x->print_value_on(text());
489c9b5090e2 Initial load
duke
parents:
diff changeset
   454
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   455
489c9b5090e2 Initial load
duke
parents:
diff changeset
   456
489c9b5090e2 Initial load
duke
parents:
diff changeset
   457
void xmlStream::flush() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   458
  out()->flush();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   459
  _last_flush = count();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   460
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   461
489c9b5090e2 Initial load
duke
parents:
diff changeset
   462
void xmlTextStream::flush() {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   463
  if (_outer_xmlStream == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   464
  _outer_xmlStream->flush();
489c9b5090e2 Initial load
duke
parents:
diff changeset
   465
}
489c9b5090e2 Initial load
duke
parents:
diff changeset
   466
489c9b5090e2 Initial load
duke
parents:
diff changeset
   467
void xmlTextStream::write(const char* str, size_t len) {
489c9b5090e2 Initial load
duke
parents:
diff changeset
   468
  if (_outer_xmlStream == NULL)  return;
489c9b5090e2 Initial load
duke
parents:
diff changeset
   469
  _outer_xmlStream->write_text(str, len);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   470
  update_position(str, len);
489c9b5090e2 Initial load
duke
parents:
diff changeset
   471
}