gcc/graphviz.cc

   1 /* Helper code for graphviz output.
   2    Copyright (C) 2019-2020 Free Software Foundation, Inc.
   3    Contributed by David Malcolm <dmalcolm@redhat.com>.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it
   8 under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful, but
  13 WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "graphviz.h"
  25
  26 /* graphviz_out's ctor, wrapping PP.  */
  27
  28 graphviz_out::graphviz_out (pretty_printer *pp)
  29 : m_pp (pp),
  30   m_indent (0)
  31 {
  32 }
  33
  34 /* Formatted print of FMT.  */
  35
  36 void
  37 graphviz_out::print (const char *fmt, ...)
  38 {
  39   text_info text;
  40   va_list ap;
  41
  42   va_start (ap, fmt);
  43   text.err_no = errno;
  44   text.args_ptr = &ap;
  45   text.format_spec = fmt;
  46   pp_format (m_pp, &text);
  47   pp_output_formatted_text (m_pp);
  48   va_end (ap);
  49 }
  50
  51 /* Formatted print of FMT.  The text is indented by the current
  52    indent, and a newline is added.  */
  53
  54 void
  55 graphviz_out::println (const char *fmt, ...)
  56 {
  57   text_info text;
  58   va_list ap;
  59
  60   write_indent ();
  61
  62   va_start (ap, fmt);
  63   text.err_no = errno;
  64   text.args_ptr = &ap;
  65   text.format_spec = fmt;
  66   pp_format (m_pp, &text);
  67   pp_output_formatted_text (m_pp);
  68   va_end (ap);
  69
  70   pp_newline (m_pp);
  71 }
  72
  73 /* Print the current indent to the underlying pp.  */
  74
  75 void
  76 graphviz_out::write_indent ()
  77 {
  78   for (int i = 0; i < m_indent * 2; ++i)
  79     pp_space (m_pp);
  80 }
  81
  82 /* Write the start of an HTML-like row via <TR>, writing to the stream
  83    so that followup text can be escaped.  */
  84
  85 void
  86 graphviz_out::begin_tr ()
  87 {
  88   pp_string (m_pp, "<TR>");
  89   pp_write_text_to_stream (m_pp);
  90 }
  91
  92 /* Write the end of an HTML-like row via </TR>, writing to the stream
  93    so that followup text can be escaped.  */
  94
  95 void
  96 graphviz_out::end_tr ()
  97 {
  98   pp_string (m_pp, "</TR>");
  99   pp_write_text_to_stream (m_pp);
 100 }
 101
 102 /* Write the start of an HTML-like <TD>, writing to the stream
 103    so that followup text can be escaped.  */
 104
 105 void
 106 graphviz_out::begin_td ()
 107 {
 108   pp_string (m_pp, "<TD ALIGN=\"LEFT\">");
 109   pp_write_text_to_stream (m_pp);
 110 }
 111
 112 /* Write the end of an HTML-like </TD>, writing to the stream
 113    so that followup text can be escaped.  */
 114
 115 void
 116 graphviz_out::end_td ()
 117 {
 118   pp_string (m_pp, "</TD>");
 119   pp_write_text_to_stream (m_pp);
 120 }
 121
 122 /* Write the start of an HTML-like row via <TR><TD>, writing to the stream
 123    so that followup text can be escaped.  */
 124
 125 void
 126 graphviz_out::begin_trtd ()
 127 {
 128   pp_string (m_pp, "<TR><TD ALIGN=\"LEFT\">");
 129   pp_write_text_to_stream (m_pp);
 130 }
 131
 132 /* Write the end of an HTML-like row via </TD></TR>, writing to the stream
 133    so that followup text can be escaped.  */
 134
 135 void
 136 graphviz_out::end_tdtr ()
 137 {
 138   pp_string (m_pp, "</TD></TR>");
 139   pp_write_text_to_stream (m_pp);
 140 }