2430 - make room for more transforms

author: Kartik K. Agaram <vc@akkartik.com> 2015-11-13 10:08:57 -0800
committer: Kartik K. Agaram <vc@akkartik.com> 2015-11-13 10:08:57 -0800
commit: c603cd6cef43100aa83a62e15f96fd54c9fb987e (patch)
tree: d8631b1964a0200d170a996314f6e023686ff8de /html/090trace_browser.cc.html
parent: 05d3592047a76db4cc8d77102508c21ca1b86e7b (diff)
download: mu-c603cd6cef43100aa83a62e15f96fd54c9fb987e.tar.gz
1 files changed, 248 insertions, 0 deletions
diff --git a/html/090trace_browser.cc.html b/html/090trace_browser.cc.html
new file mode 100644
index 00000000..62aa2fbe
--- /dev/null
+++ b/html/090trace_browser.cc.html
@@ -0,0 +1,248 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - 090trace_browser.cc</title>
+<meta name="Generator" content="Vim/7.4">
+<meta name="plugin-version" content="vim7.4_v1">
+<meta name="syntax" content="cpp">
+<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
+<meta name="colorscheme" content="minimal">
+<style type="text/css">
+<!--
+pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
+body { font-family: monospace; color: #eeeeee; background-color: #080808; }
+* { font-size: 1.05em; }
+.cSpecial { color: #008000; }
+.Comment { color: #9090ff; }
+.Delimiter { color: #a04060; }
+.Identifier { color: #804000; }
+.Constant { color: #00a0a0; }
+-->
+</style>
+
+<script type='text/javascript'>
+<!--
+
+-->
+</script>
+</head>
+<body>
+<pre id='vimCodeElement'>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+_BROWSE_TRACE<span class="Delimiter">,</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
+put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;$browse-trace&quot;</span><span class="Delimiter">,</span> _BROWSE_TRACE<span class="Delimiter">);</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+case _BROWSE_TRACE: <span class="Delimiter">{</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
+case _BROWSE_TRACE: <span class="Delimiter">{</span>
+  start_trace_browser<span class="Delimiter">();</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+set&lt;long long int&gt; Visible<span class="Delimiter">;</span>
+long long int Top_of_screen = <span class="Constant">0</span><span class="Delimiter">;</span>
+long long int Last_printed_row = <span class="Constant">0</span><span class="Delimiter">;</span>
+map&lt;int<span class="Delimiter">,</span> long long int&gt; Trace_index<span class="Delimiter">;</span>  <span class="Comment">// screen row -&gt; trace index</span>
+
+<span class="Delimiter">:(code)</span>
+void start_trace_browser<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+  if <span class="Delimiter">(</span>!Trace_stream<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+  cerr &lt;&lt; <span class="Constant">&quot;computing depth to display</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
+  long long int min_depth = <span class="Constant">9999</span><span class="Delimiter">;</span>
+  for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    trace_line&amp; curr_line = Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
+    if <span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+    if <span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth &lt; min_depth<span class="Delimiter">)</span> min_depth = curr_line<span class="Delimiter">.</span>depth<span class="Delimiter">;</span>
+  <span class="Delimiter">}</span>
+  cerr &lt;&lt; <span class="Constant">&quot;depth is &quot;</span> &lt;&lt; min_depth &lt;&lt; <span class="cSpecial">'\n'</span><span class="Delimiter">;</span>
+  cerr &lt;&lt; <span class="Constant">&quot;computing lines to display</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><span class="Delimiter">;</span>
+  for <span class="Delimiter">(</span>long long int i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    if <span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>depth == min_depth<span class="Delimiter">)</span>
+      Visible<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  tb_init<span class="Delimiter">();</span>
+  Display_row = Display_column = <span class="Constant">0</span><span class="Delimiter">;</span>
+  tb_event event<span class="Delimiter">;</span>
+  Top_of_screen = <span class="Constant">0</span><span class="Delimiter">;</span>
+  refresh_screen_rows<span class="Delimiter">();</span>
+  while <span class="Delimiter">(</span><span class="Constant">true</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    render<span class="Delimiter">();</span>
+    do <span class="Delimiter">{</span>
+      tb_poll_event<span class="Delimiter">(</span>&amp;event<span class="Delimiter">);</span>
+    <span class="Delimiter">}</span> while <span class="Delimiter">(</span>event<span class="Delimiter">.</span>type != TB_EVENT_KEY<span class="Delimiter">);</span>
+    long long int key = event<span class="Delimiter">.</span>key ? event<span class="Delimiter">.</span>key : event<span class="Delimiter">.</span>ch<span class="Delimiter">;</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'q'</span> || key == <span class="Constant">'Q'</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'j'</span> || key == TB_KEY_ARROW_DOWN<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// move cursor one line down</span>
+      if <span class="Delimiter">(</span>Display_row &lt; Last_printed_row<span class="Delimiter">)</span> ++Display_row<span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'k'</span> || key == TB_KEY_ARROW_UP<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// move cursor one line up</span>
+      if <span class="Delimiter">(</span>Display_row &gt; <span class="Constant">0</span><span class="Delimiter">)</span> --Display_row<span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'H'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// move cursor to top of screen</span>
+      Display_row = <span class="Constant">0</span><span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'M'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// move cursor to center of screen</span>
+      Display_row = tb_height<span class="Delimiter">()</span>/<span class="Constant">2</span><span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'L'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// move cursor to bottom of screen</span>
+      Display_row = tb_height<span class="Delimiter">()</span>-<span class="Constant">1</span><span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'J'</span> || key == TB_KEY_PGDN<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// page-down</span>
+      if <span class="Delimiter">(</span>Trace_index<span class="Delimiter">.</span>find<span class="Delimiter">(</span>tb_height<span class="Delimiter">()</span>-<span class="Constant">1</span><span class="Delimiter">)</span> != Trace_index<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
+        Top_of_screen = Trace_index[tb_height<span class="Delimiter">()</span>-<span class="Constant">1</span>]+<span class="Constant">1</span><span class="Delimiter">;</span>
+        refresh_screen_rows<span class="Delimiter">();</span>
+      <span class="Delimiter">}</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'K'</span> || key == TB_KEY_PGUP<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// page-up is more convoluted</span>
+      for <span class="Delimiter">(</span>int screen_row = tb_height<span class="Delimiter">();</span> screen_row &gt; <span class="Constant">0</span> &amp;&amp; Top_of_screen &gt; <span class="Constant">0</span><span class="Delimiter">;</span> --screen_row<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        --Top_of_screen<span class="Delimiter">;</span>
+        if <span class="Delimiter">(</span>Top_of_screen &lt;= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+        while <span class="Delimiter">(</span>Top_of_screen &gt; <span class="Constant">0</span> &amp;&amp; !contains_key<span class="Delimiter">(</span>Visible<span class="Delimiter">,</span> Top_of_screen<span class="Delimiter">))</span>
+          --Top_of_screen<span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+      if <span class="Delimiter">(</span>Top_of_screen &gt; <span class="Constant">0</span><span class="Delimiter">)</span>
+        refresh_screen_rows<span class="Delimiter">();</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == <span class="Constant">'G'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// go to bottom of screen; largely like page-up, interestingly</span>
+      Top_of_screen = SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">;</span>
+      for <span class="Delimiter">(</span>int screen_row = tb_height<span class="Delimiter">();</span> screen_row &gt; <span class="Constant">0</span> &amp;&amp; Top_of_screen &gt; <span class="Constant">0</span><span class="Delimiter">;</span> --screen_row<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        --Top_of_screen<span class="Delimiter">;</span>
+        if <span class="Delimiter">(</span>Top_of_screen &lt;= <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+        while <span class="Delimiter">(</span>Top_of_screen &gt; <span class="Constant">0</span> &amp;&amp; !contains_key<span class="Delimiter">(</span>Visible<span class="Delimiter">,</span> Top_of_screen<span class="Delimiter">))</span>
+          --Top_of_screen<span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+      refresh_screen_rows<span class="Delimiter">();</span>
+      <span class="Comment">// move cursor to bottom</span>
+      Display_row = Last_printed_row<span class="Delimiter">;</span>
+      refresh_screen_rows<span class="Delimiter">();</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == TB_KEY_CARRIAGE_RETURN<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// expand lines under current by one level</span>
+      assert<span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Trace_index<span class="Delimiter">,</span> Display_row<span class="Delimiter">));</span>
+      long long int start_index = Trace_index[Display_row]<span class="Delimiter">;</span>
+      long long int index = <span class="Constant">0</span><span class="Delimiter">;</span>
+      <span class="Comment">// simultaneously compute end_index and min_depth</span>
+      int min_depth = <span class="Constant">9999</span><span class="Delimiter">;</span>
+      for <span class="Delimiter">(</span>index = start_index+<span class="Constant">1</span><span class="Delimiter">;</span> index &lt; SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">);</span> ++index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        if <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Visible<span class="Delimiter">,</span> index<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+        trace_line&amp; curr_line = Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>index<span class="Delimiter">);</span>
+        if <span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+        assert<span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth &gt; Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>start_index<span class="Delimiter">).</span>depth<span class="Delimiter">);</span>
+        if <span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth &lt; min_depth<span class="Delimiter">)</span> min_depth = curr_line<span class="Delimiter">.</span>depth<span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+      long long int end_index = index<span class="Delimiter">;</span>
+      <span class="Comment">// mark as visible all intervening indices at min_depth</span>
+      for <span class="Delimiter">(</span>index = start_index<span class="Delimiter">;</span> index &lt; end_index<span class="Delimiter">;</span> ++index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        trace_line&amp; curr_line = Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>index<span class="Delimiter">);</span>
+        if <span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth == min_depth<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+          Visible<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>index<span class="Delimiter">);</span>
+        <span class="Delimiter">}</span>
+      <span class="Delimiter">}</span>
+      refresh_screen_rows<span class="Delimiter">();</span>
+    <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>key == TB_KEY_BACKSPACE || key == TB_KEY_BACKSPACE2<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// collapse all lines under current</span>
+      assert<span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Trace_index<span class="Delimiter">,</span> Display_row<span class="Delimiter">));</span>
+      long long int start_index = Trace_index[Display_row]<span class="Delimiter">;</span>
+      long long int index = <span class="Constant">0</span><span class="Delimiter">;</span>
+      <span class="Comment">// end_index is the next line at a depth same as or lower than start_index</span>
+      int initial_depth = Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>start_index<span class="Delimiter">).</span>depth<span class="Delimiter">;</span>
+      for <span class="Delimiter">(</span>index = start_index+<span class="Constant">1</span><span class="Delimiter">;</span> index &lt; SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">);</span> ++index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        if <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Visible<span class="Delimiter">,</span> index<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+        trace_line&amp; curr_line = Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>index<span class="Delimiter">);</span>
+        if <span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+        if <span class="Delimiter">(</span>curr_line<span class="Delimiter">.</span>depth &lt;= initial_depth<span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+      long long int end_index = index<span class="Delimiter">;</span>
+      <span class="Comment">// mark as visible all intervening indices at min_depth</span>
+      for <span class="Delimiter">(</span>index = start_index+<span class="Constant">1</span><span class="Delimiter">;</span> index &lt; end_index<span class="Delimiter">;</span> ++index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        Visible<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>index<span class="Delimiter">);</span>
+      <span class="Delimiter">}</span>
+      refresh_screen_rows<span class="Delimiter">();</span>
+    <span class="Delimiter">}</span>
+  <span class="Delimiter">}</span>
+  tb_shutdown<span class="Delimiter">();</span>
+<span class="Delimiter">}</span>
+
+<span class="Comment">// update Trace_indices for each screen_row on the basis of Top_of_screen and Visible</span>
+void refresh_screen_rows<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+  long long int screen_row = <span class="Constant">0</span><span class="Delimiter">,</span> index = <span class="Constant">0</span><span class="Delimiter">;</span>
+  Trace_index<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>
+  for <span class="Delimiter">(</span>screen_row = <span class="Constant">0</span><span class="Delimiter">,</span> index = Top_of_screen<span class="Delimiter">;</span> screen_row &lt; tb_height<span class="Delimiter">()</span> &amp;&amp; index &lt; SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">);</span> ++screen_row<span class="Delimiter">,</span> ++index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    <span class="Comment">// skip lines without depth for now</span>
+    while <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Visible<span class="Delimiter">,</span> index<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+      ++index<span class="Delimiter">;</span>
+      if <span class="Delimiter">(</span>index &gt;= SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">))</span> <span class="Identifier">goto</span> done<span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    assert<span class="Delimiter">(</span>index &lt; SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">));</span>
+    Trace_index[screen_row] = index<span class="Delimiter">;</span>
+  <span class="Delimiter">}</span>
+done:<span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+void render<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+  long long int screen_row = <span class="Constant">0</span><span class="Delimiter">;</span>
+  for <span class="Delimiter">(</span>screen_row = <span class="Constant">0</span><span class="Delimiter">;</span> screen_row &lt; tb_height<span class="Delimiter">();</span> ++screen_row<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    if <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Trace_index<span class="Delimiter">,</span> screen_row<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+    trace_line&amp; curr_line = Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">.</span>at<span class="Delimiter">(</span>Trace_index[screen_row]<span class="Delimiter">);</span>
+    ostringstream out<span class="Delimiter">;</span>
+    out &lt;&lt; std::setw<span class="Delimiter">(</span><span class="Constant">4</span><span class="Delimiter">)</span> &lt;&lt; curr_line<span class="Delimiter">.</span>depth &lt;&lt; <span class="Constant">' '</span> &lt;&lt; curr_line<span class="Delimiter">.</span>label &lt;&lt; <span class="Constant">&quot;: &quot;</span> &lt;&lt; curr_line<span class="Delimiter">.</span>contents<span class="Delimiter">;</span>
+    if <span class="Delimiter">(</span>screen_row &lt; tb_height<span class="Delimiter">()</span>-<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      long long int delta = lines_hidden<span class="Delimiter">(</span>screen_row<span class="Delimiter">);</span>
+      <span class="Comment">// home-brew escape sequence for red</span>
+      if <span class="Delimiter">(</span>delta &gt; <span class="Constant">999</span><span class="Delimiter">)</span> out &lt;&lt; <span class="Constant">&quot;{&quot;</span><span class="Delimiter">;</span>
+      out &lt;&lt; <span class="Constant">&quot; (&quot;</span> &lt;&lt; lines_hidden<span class="Delimiter">(</span>screen_row<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;)&quot;</span><span class="Delimiter">;</span>
+      if <span class="Delimiter">(</span>delta &gt; <span class="Constant">999</span><span class="Delimiter">)</span> out &lt;&lt; <span class="Constant">&quot;}&quot;</span><span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    render_line<span class="Delimiter">(</span>screen_row<span class="Delimiter">,</span> out<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
+  <span class="Delimiter">}</span>
+  <span class="Comment">// clear rest of screen</span>
+  Last_printed_row = screen_row-<span class="Constant">1</span><span class="Delimiter">;</span>
+  for <span class="Delimiter">(;</span> screen_row &lt; tb_height<span class="Delimiter">();</span> ++screen_row<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    render_line<span class="Delimiter">(</span>screen_row<span class="Delimiter">,</span> <span class="Constant">&quot;~&quot;</span><span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  <span class="Comment">// move cursor back to display row at the end</span>
+  tb_set_cursor<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">,</span> Display_row<span class="Delimiter">);</span>
+  tb_present<span class="Delimiter">();</span>
+<span class="Delimiter">}</span>
+
+long long int lines_hidden<span class="Delimiter">(</span>long long int screen_row<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  assert<span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Trace_index<span class="Delimiter">,</span> screen_row<span class="Delimiter">));</span>
+  if <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Trace_index<span class="Delimiter">,</span> screen_row+<span class="Constant">1</span><span class="Delimiter">))</span>
+    <span class="Identifier">return</span> SIZE<span class="Delimiter">(</span>Trace_stream<span class="Delimiter">-&gt;</span>past_lines<span class="Delimiter">)</span>-Trace_index[screen_row]<span class="Delimiter">;</span>
+  else
+    <span class="Identifier">return</span> Trace_index[screen_row+<span class="Constant">1</span>] - Trace_index[screen_row]<span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+void render_line<span class="Delimiter">(</span>int screen_row<span class="Delimiter">,</span> const string&amp; s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  long long int col = <span class="Constant">0</span><span class="Delimiter">;</span>
+  int color = TB_WHITE<span class="Delimiter">;</span>
+  for <span class="Delimiter">(</span>col = <span class="Constant">0</span><span class="Delimiter">;</span> col &lt; tb_width<span class="Delimiter">()</span> &amp;&amp; col &lt; SIZE<span class="Delimiter">(</span>s<span class="Delimiter">);</span> ++col<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    char c = s<span class="Delimiter">.</span>at<span class="Delimiter">(</span>col<span class="Delimiter">);</span>  <span class="Comment">// todo: unicode</span>
+    if <span class="Delimiter">(</span>c == <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> c = <span class="Constant">';'</span><span class="Delimiter">;</span>  <span class="Comment">// replace newlines with semi-colons</span>
+    <span class="Comment">// escapes. hack: can't start a line with them.</span>
+    if <span class="Delimiter">(</span>c == <span class="Constant">'{'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> color = <span class="Comment">/*</span><span class="Comment">red</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> c = <span class="Constant">' '</span><span class="Delimiter">;</span> <span class="Delimiter">}</span>
+    if <span class="Delimiter">(</span>c == <span class="Constant">'}'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span> color = TB_WHITE<span class="Delimiter">;</span> c = <span class="Constant">' '</span><span class="Delimiter">;</span> <span class="Delimiter">}</span>
+    tb_change_cell<span class="Delimiter">(</span>col<span class="Delimiter">,</span> screen_row<span class="Delimiter">,</span> c<span class="Delimiter">,</span> color<span class="Delimiter">,</span> TB_BLACK<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  for <span class="Delimiter">(;</span> col &lt; tb_width<span class="Delimiter">();</span> ++col<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    tb_change_cell<span class="Delimiter">(</span>col<span class="Delimiter">,</span> screen_row<span class="Delimiter">,</span> <span class="Constant">' '</span><span class="Delimiter">,</span> TB_WHITE<span class="Delimiter">,</span> TB_BLACK<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+<span class="Delimiter">}</span>
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->
author	Kartik K. Agaram <vc@akkartik.com>	2015-11-13 10:08:57 -0800
committer	Kartik K. Agaram <vc@akkartik.com>	2015-11-13 10:08:57 -0800
commit	c603cd6cef43100aa83a62e15f96fd54c9fb987e (patch)
tree	d8631b1964a0200d170a996314f6e023686ff8de /html/090trace_browser.cc.html
parent	05d3592047a76db4cc8d77102508c21ca1b86e7b (diff)
download	mu-c603cd6cef43100aa83a62e15f96fd54c9fb987e.tar.gz