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/082scenario_screen.cc.html
parent: 05d3592047a76db4cc8d77102508c21ca1b86e7b (diff)
download: mu-c603cd6cef43100aa83a62e15f96fd54c9fb987e.tar.gz
1 files changed, 394 insertions, 0 deletions
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+<pre id='vimCodeElement'>
+<span class="Comment">//: Clean syntax to manipulate and check the screen in scenarios.</span>
+<span class="Comment">//: Instructions 'assume-screen' and 'screen-should-contain' implicitly create</span>
+<span class="Comment">//: a variable called 'screen' that is accessible inside other 'run'</span>
+<span class="Comment">//: instructions in the scenario. 'screen-should-contain' can check unicode</span>
+<span class="Comment">//: characters in the fake screen</span>
+
+<span class="Delimiter">:(scenarios run_mu_scenario)</span>
+<span class="Delimiter">:(scenario screen_in_scenario)</span>
+scenario screen-in-scenario [
+  assume-screen <span class="Constant">5</span>/width<span class="Delimiter">,</span> <span class="Constant">3</span>/height
+  run [
+    screen:address:screen<span class="Special"> &lt;- </span>print-character screen:address:screen<span class="Delimiter">,</span> <span class="Constant">97</span>  <span class="Comment"># 'a'</span>
+  ]
+  screen-should-contain [
+  <span class="Comment">#  01234</span>
+    <span class="Delimiter">.</span>a    <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+  ]
+]
+
+<span class="Delimiter">:(scenario screen_in_scenario_unicode)</span>
+scenario screen-in-scenario-unicode-color [
+  assume-screen <span class="Constant">5</span>/width<span class="Delimiter">,</span> <span class="Constant">3</span>/height
+  run [
+    screen:address:screen<span class="Special"> &lt;- </span>print-character screen:address:screen<span class="Delimiter">,</span> <span class="Constant">955</span>/greek-small-lambda<span class="Delimiter">,</span> <span class="Constant">1</span>/red
+    screen:address:screen<span class="Special"> &lt;- </span>print-character screen:address:screen<span class="Delimiter">,</span> <span class="Constant">97</span>/a
+  ]
+  screen-should-contain [
+  <span class="Comment">#  01234</span>
+    <span class="Delimiter">.</span>λa   <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+  ]
+]
+
+<span class="Delimiter">:(scenario screen_in_scenario_color)</span>
+<span class="Comment"># screen-should-contain can check unicode characters in the fake screen</span>
+scenario screen-in-scenario-color [
+  assume-screen <span class="Constant">5</span>/width<span class="Delimiter">,</span> <span class="Constant">3</span>/height
+  run [
+    screen:address:screen<span class="Special"> &lt;- </span>print-character screen:address:screen<span class="Delimiter">,</span> <span class="Constant">955</span>/greek-small-lambda<span class="Delimiter">,</span> <span class="Constant">1</span>/red
+    screen:address:screen<span class="Special"> &lt;- </span>print-character screen:address:screen<span class="Delimiter">,</span> <span class="Constant">97</span>/a<span class="Delimiter">,</span> <span class="Constant">7</span>/white
+  ]
+  <span class="Comment"># screen-should-contain shows everything</span>
+  screen-should-contain [
+  <span class="Comment">#  01234</span>
+    <span class="Delimiter">.</span>λa   <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+  ]
+  <span class="Comment"># screen-should-contain-in-color filters out everything except the given</span>
+  <span class="Comment"># color, all you see is the 'a' in white.</span>
+  screen-should-contain-in-color <span class="Constant">7</span>/white<span class="Delimiter">,</span> [
+  <span class="Comment">#  01234</span>
+    <span class="Delimiter">.</span> a   <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+  ]
+  <span class="Comment"># ..and the λ in red.</span>
+  screen-should-contain-in-color <span class="Constant">1</span>/red<span class="Delimiter">,</span> [
+  <span class="Comment">#  01234</span>
+    <span class="Delimiter">.</span>λ    <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+  ]
+]
+
+<span class="Delimiter">:(scenario screen_in_scenario_error)</span>
+<span class="Special">% Scenario_testing_scenario = true;</span>
+<span class="Special">% Hide_errors = true;</span>
+scenario screen-in-scenario-error [
+  assume-screen <span class="Constant">5</span>/width<span class="Delimiter">,</span> <span class="Constant">3</span>/height
+  run [
+    screen:address:screen<span class="Special"> &lt;- </span>print-character screen:address:screen<span class="Delimiter">,</span> <span class="Constant">97</span>  <span class="Comment"># 'a'</span>
+  ]
+  screen-should-contain [
+  <span class="Comment">#  01234</span>
+    <span class="Delimiter">.</span>b    <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+  ]
+]
+<span class="traceContains">+error: expected screen location (0, 0) to contain 98 ('b') instead of 97 ('a')</span>
+
+<span class="Delimiter">:(scenario screen_in_scenario_color_error)</span>
+<span class="Special">% Scenario_testing_scenario = true;</span>
+<span class="Special">% Hide_errors = true;</span>
+<span class="Comment"># screen-should-contain can check unicode characters in the fake screen</span>
+scenario screen-in-scenario-color [
+  assume-screen <span class="Constant">5</span>/width<span class="Delimiter">,</span> <span class="Constant">3</span>/height
+  run [
+    screen:address:screen<span class="Special"> &lt;- </span>print-character screen:address:screen<span class="Delimiter">,</span> <span class="Constant">97</span>/a<span class="Delimiter">,</span> <span class="Constant">1</span>/red
+  ]
+  screen-should-contain-in-color <span class="Constant">2</span>/green<span class="Delimiter">,</span> [
+  <span class="Comment">#  01234</span>
+    <span class="Delimiter">.</span>a    <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+    <span class="Delimiter">.</span>     <span class="Delimiter">.</span>
+  ]
+]
+<span class="traceContains">+error: expected screen location (0, 0) to be in color 2 instead of 1</span>
+
+<span class="Comment">//: allow naming just for 'screen'</span>
+<span class="Delimiter">:(before &quot;End is_special_name Cases&quot;)</span>
+if <span class="Delimiter">(</span>s == <span class="Constant">&quot;screen&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+
+<span class="Delimiter">:(scenarios run)</span>
+<span class="Delimiter">:(scenario convert_names_does_not_fail_when_mixing_special_names_and_numeric_locations)</span>
+<span class="Special">% Scenario_testing_scenario = true;</span>
+<span class="Special">% Hide_errors = true;</span>
+recipe main [
+  screen:number<span class="Special"> &lt;- </span>copy <span class="Constant">1</span>:number
+]
+<span class="traceAbsent">-error: mixing variable names and numeric addresses in main</span>
+$error: <span class="Constant">0</span>
+<span class="Delimiter">:(scenarios run_mu_scenario)</span>
+
+<span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+<span class="Comment">// Scenarios may not define default-space, so they should fit within the</span>
+<span class="Comment">// initial area of memory reserved for tests. We'll put the predefined</span>
+<span class="Comment">// variables available to them at the end of that region.</span>
+const long long int Max_variables_in_scenarios = Reserved_for_tests-<span class="Constant">100</span><span class="Delimiter">;</span>
+long long int Next_predefined_global_for_scenarios = Max_variables_in_scenarios<span class="Delimiter">;</span>
+<span class="Delimiter">:(before &quot;End Setup&quot;)</span>
+assert<span class="Delimiter">(</span>Next_predefined_global_for_scenarios &lt; Reserved_for_tests<span class="Delimiter">);</span>
+<span class="Delimiter">:(after &quot;transform_all()&quot; following &quot;case RUN:&quot;)</span>
+<span class="Comment">// There's a restriction on the number of variables 'run' can use, so that</span>
+<span class="Comment">// it can avoid colliding with the dynamic allocator in case it doesn't</span>
+<span class="Comment">// initialize a default-space.</span>
+assert<span class="Delimiter">(</span>Name[tmp_recipe<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)</span>][<span class="Constant">&quot;&quot;</span>] &lt; Max_variables_in_scenarios<span class="Delimiter">);</span>
+
+<span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+<span class="Comment">// Scenario Globals.</span>
+const long long int SCREEN = Next_predefined_global_for_scenarios++<span class="Delimiter">;</span>
+<span class="Comment">// End Scenario Globals.</span>
+<span class="Delimiter">:(before &quot;End Special Scenario Variable Names(r)&quot;)</span>
+Name[r][<span class="Constant">&quot;screen&quot;</span>] = SCREEN<span class="Delimiter">;</span>
+
+<span class="Delimiter">:(before &quot;End Rewrite Instruction(curr, recipe result)&quot;)</span>
+<span class="Comment">// rewrite `assume-screen width, height` to</span>
+<span class="Comment">// `screen:address:screen &lt;- new-fake-screen width, height`</span>
+if <span class="Delimiter">(</span>curr<span class="Delimiter">.</span>name == <span class="Constant">&quot;assume-screen&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  curr<span class="Delimiter">.</span>name = <span class="Constant">&quot;new-fake-screen&quot;</span><span class="Delimiter">;</span>
+  assert<span class="Delimiter">(</span>curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
+  curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span><span class="Constant">&quot;screen:address:screen&quot;</span><span class="Delimiter">));</span>
+  curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>SCREEN<span class="Delimiter">);</span>
+<span class="Delimiter">}</span>
+
+<span class="Comment">//: screen-should-contain is a regular instruction</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+SCREEN_SHOULD_CONTAIN<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;screen-should-contain&quot;</span><span class="Delimiter">,</span> SCREEN_SHOULD_CONTAIN<span class="Delimiter">);</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+case SCREEN_SHOULD_CONTAIN: <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 SCREEN_SHOULD_CONTAIN: <span class="Delimiter">{</span>
+  if <span class="Delimiter">(</span>!Passed<span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+  check_screen<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">,</span> -<span class="Constant">1</span><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 Declarations&quot;)</span>
+SCREEN_SHOULD_CONTAIN_IN_COLOR<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;screen-should-contain-in-color&quot;</span><span class="Delimiter">,</span> SCREEN_SHOULD_CONTAIN_IN_COLOR<span class="Delimiter">);</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+case SCREEN_SHOULD_CONTAIN_IN_COLOR: <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 SCREEN_SHOULD_CONTAIN_IN_COLOR: <span class="Delimiter">{</span>
+  if <span class="Delimiter">(</span>!Passed<span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+  assert<span class="Delimiter">(</span>scalar<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)));</span>
+  check_screen<span class="Delimiter">(</span>current_instruction<span class="Delimiter">().</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name<span class="Delimiter">,</span> ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(before &quot;End Types&quot;)</span>
+<span class="Comment">// scan an array of characters in a unicode-aware, bounds-checked manner</span>
+struct raw_string_stream <span class="Delimiter">{</span>
+  long long int index<span class="Delimiter">;</span>
+  const long long int max<span class="Delimiter">;</span>
+  const char* buf<span class="Delimiter">;</span>
+
+  raw_string_stream<span class="Delimiter">(</span>const string&amp;<span class="Delimiter">);</span>
+  uint32_t get<span class="Delimiter">();</span>  <span class="Comment">// unicode codepoint</span>
+  uint32_t peek<span class="Delimiter">();</span>  <span class="Comment">// unicode codepoint</span>
+  bool at_end<span class="Delimiter">()</span> const<span class="Delimiter">;</span>
+  void skip_whitespace_and_comments<span class="Delimiter">();</span>
+<span class="Delimiter">};</span>
+
+<span class="Delimiter">:(code)</span>
+void check_screen<span class="Delimiter">(</span>const string&amp; expected_contents<span class="Delimiter">,</span> const int color<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  assert<span class="Delimiter">(</span>!current_call<span class="Delimiter">().</span>default_space<span class="Delimiter">);</span>  <span class="Comment">// not supported</span>
+  long long int screen_location = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> SCREEN<span class="Delimiter">);</span>
+  int data_offset = find_element_name<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;screen&quot;</span><span class="Delimiter">),</span> <span class="Constant">&quot;data&quot;</span><span class="Delimiter">,</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
+  assert<span class="Delimiter">(</span>data_offset &gt;= <span class="Constant">0</span><span class="Delimiter">);</span>
+  long long int screen_data_location = screen_location+data_offset<span class="Delimiter">;</span>  <span class="Comment">// type: address:array:character</span>
+  long long int screen_data_start = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> screen_data_location<span class="Delimiter">);</span>  <span class="Comment">// type: array:character</span>
+  int width_offset = find_element_name<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;screen&quot;</span><span class="Delimiter">),</span> <span class="Constant">&quot;num-columns&quot;</span><span class="Delimiter">,</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
+  long long int screen_width = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> screen_location+width_offset<span class="Delimiter">);</span>
+  int height_offset = find_element_name<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;screen&quot;</span><span class="Delimiter">),</span> <span class="Constant">&quot;num-rows&quot;</span><span class="Delimiter">,</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
+  long long int screen_height = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> screen_location+height_offset<span class="Delimiter">);</span>
+  raw_string_stream cursor<span class="Delimiter">(</span>expected_contents<span class="Delimiter">);</span>
+  <span class="Comment">// todo: too-long expected_contents should fail</span>
+  long long int addr = screen_data_start+<span class="Constant">1</span><span class="Delimiter">;</span>  <span class="Comment">// skip length</span>
+  for <span class="Delimiter">(</span>long long int row = <span class="Constant">0</span><span class="Delimiter">;</span> row &lt; screen_height<span class="Delimiter">;</span> ++row<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    cursor<span class="Delimiter">.</span>skip_whitespace_and_comments<span class="Delimiter">();</span>
+    if <span class="Delimiter">(</span>cursor<span class="Delimiter">.</span>at_end<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
+    assert<span class="Delimiter">(</span>cursor<span class="Delimiter">.</span>get<span class="Delimiter">()</span> == <span class="Constant">'.'</span><span class="Delimiter">);</span>
+    for <span class="Delimiter">(</span>long long int column = <span class="Constant">0</span><span class="Delimiter">;</span>  column &lt; screen_width<span class="Delimiter">;</span>  ++column<span class="Delimiter">,</span> addr+= <span class="Comment">/*</span><span class="Comment">size of screen-cell</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      const int cell_color_offset = <span class="Constant">1</span><span class="Delimiter">;</span>
+      uint32_t curr = cursor<span class="Delimiter">.</span>get<span class="Delimiter">();</span>
+      if <span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">)</span> == <span class="Constant">0</span> &amp;&amp; isspace<span class="Delimiter">(</span>curr<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+      if <span class="Delimiter">(</span>curr == <span class="Constant">' '</span> &amp;&amp; color != -<span class="Constant">1</span> &amp;&amp; color != get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr+cell_color_offset<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+        <span class="Comment">// filter out other colors</span>
+        <span class="Identifier">continue</span><span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+      if <span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">)</span> != <span class="Constant">0</span> &amp;&amp; Memory[addr] == curr<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        if <span class="Delimiter">(</span>color == -<span class="Constant">1</span> || color == get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr+cell_color_offset<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
+        <span class="Comment">// contents match but color is off</span>
+        if <span class="Delimiter">(</span>Current_scenario &amp;&amp; !Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+          <span class="Comment">// genuine test in a mu file</span>
+          raise_error &lt;&lt; <span class="Constant">&quot;</span><span class="cSpecial">\n</span><span class="Constant">F - &quot;</span> &lt;&lt; Current_scenario<span class="Delimiter">-&gt;</span>name &lt;&lt; <span class="Constant">&quot;: expected screen location (&quot;</span> &lt;&lt; row &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; column &lt;&lt; <span class="Constant">&quot;, address &quot;</span> &lt;&lt; addr &lt;&lt; <span class="Constant">&quot;, value &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;) to be in color &quot;</span> &lt;&lt; color &lt;&lt; <span class="Constant">&quot; instead of &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>Memory[addr+cell_color_offset]<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        <span class="Delimiter">}</span>
+        else <span class="Delimiter">{</span>
+          <span class="Comment">// just testing check_screen</span>
+          raise_error &lt;&lt; <span class="Constant">&quot;expected screen location (&quot;</span> &lt;&lt; row &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; column &lt;&lt; <span class="Constant">&quot;) to be in color &quot;</span> &lt;&lt; color &lt;&lt; <span class="Constant">&quot; instead of &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr+cell_color_offset<span class="Delimiter">))</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
+        <span class="Delimiter">}</span>
+        if <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+          Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
+          ++Num_failures<span class="Delimiter">;</span>
+        <span class="Delimiter">}</span>
+        <span class="Identifier">return</span><span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+
+      <span class="Comment">// really a mismatch</span>
+      <span class="Comment">// can't print multi-byte unicode characters in errors just yet. not very useful for debugging anyway.</span>
+      char expected_pretty[<span class="Constant">10</span>] = <span class="Delimiter">{</span><span class="Constant">0</span><span class="Delimiter">};</span>
+      if <span class="Delimiter">(</span>curr &lt; <span class="Constant">256</span> &amp;&amp; !iscntrl<span class="Delimiter">(</span>curr<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+        <span class="Comment">// &quot; ('&lt;curr&gt;')&quot;</span>
+        expected_pretty[<span class="Constant">0</span>] = <span class="Constant">' '</span><span class="Delimiter">,</span> expected_pretty[<span class="Constant">1</span>] = <span class="Constant">'('</span><span class="Delimiter">,</span> expected_pretty[<span class="Constant">2</span>] = <span class="cSpecial">'\''</span><span class="Delimiter">,</span> expected_pretty[<span class="Constant">3</span>] = static_cast&lt;unsigned char&gt;<span class="Delimiter">(</span>curr<span class="Delimiter">),</span> expected_pretty[<span class="Constant">4</span>] = <span class="cSpecial">'\''</span><span class="Delimiter">,</span> expected_pretty[<span class="Constant">5</span>] = <span class="Constant">')'</span><span class="Delimiter">,</span> expected_pretty[<span class="Constant">6</span>] = <span class="cSpecial">'\0'</span><span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+      char actual_pretty[<span class="Constant">10</span>] = <span class="Delimiter">{</span><span class="Constant">0</span><span class="Delimiter">};</span>
+      if <span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">)</span> &lt; <span class="Constant">256</span> &amp;&amp; !iscntrl<span class="Delimiter">(</span>Memory[addr]<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+        <span class="Comment">// &quot; ('&lt;curr&gt;')&quot;</span>
+        actual_pretty[<span class="Constant">0</span>] = <span class="Constant">' '</span><span class="Delimiter">,</span> actual_pretty[<span class="Constant">1</span>] = <span class="Constant">'('</span><span class="Delimiter">,</span> actual_pretty[<span class="Constant">2</span>] = <span class="cSpecial">'\''</span><span class="Delimiter">,</span> actual_pretty[<span class="Constant">3</span>] = static_cast&lt;unsigned char&gt;<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">)),</span> actual_pretty[<span class="Constant">4</span>] = <span class="cSpecial">'\''</span><span class="Delimiter">,</span> actual_pretty[<span class="Constant">5</span>] = <span class="Constant">')'</span><span class="Delimiter">,</span> actual_pretty[<span class="Constant">6</span>] = <span class="cSpecial">'\0'</span><span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+
+      ostringstream color_phrase<span class="Delimiter">;</span>
+      if <span class="Delimiter">(</span>color != -<span class="Constant">1</span><span class="Delimiter">)</span> color_phrase &lt;&lt; <span class="Constant">&quot; in color &quot;</span> &lt;&lt; color<span class="Delimiter">;</span>
+      if <span class="Delimiter">(</span>Current_scenario &amp;&amp; !Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        <span class="Comment">// genuine test in a mu file</span>
+        raise_error &lt;&lt; <span class="Constant">&quot;</span><span class="cSpecial">\n</span><span class="Constant">F - &quot;</span> &lt;&lt; Current_scenario<span class="Delimiter">-&gt;</span>name &lt;&lt; <span class="Constant">&quot;: expected screen location (&quot;</span> &lt;&lt; row &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; column &lt;&lt; <span class="Constant">&quot;) to contain &quot;</span> &lt;&lt; curr &lt;&lt; expected_pretty &lt;&lt; color_phrase<span class="Delimiter">.</span>str<span class="Delimiter">()</span> &lt;&lt; <span class="Constant">&quot; instead of &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">))</span> &lt;&lt; actual_pretty &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
+        dump_screen<span class="Delimiter">();</span>
+      <span class="Delimiter">}</span>
+      else <span class="Delimiter">{</span>
+        <span class="Comment">// just testing check_screen</span>
+        raise_error &lt;&lt; <span class="Constant">&quot;expected screen location (&quot;</span> &lt;&lt; row &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; column &lt;&lt; <span class="Constant">&quot;) to contain &quot;</span> &lt;&lt; curr &lt;&lt; expected_pretty &lt;&lt; color_phrase<span class="Delimiter">.</span>str<span class="Delimiter">()</span> &lt;&lt; <span class="Constant">&quot; instead of &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">))</span> &lt;&lt; actual_pretty &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
+      <span class="Delimiter">}</span>
+      if <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
+        ++Num_failures<span class="Delimiter">;</span>
+      <span class="Delimiter">}</span>
+      <span class="Identifier">return</span><span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    assert<span class="Delimiter">(</span>cursor<span class="Delimiter">.</span>get<span class="Delimiter">()</span> == <span class="Constant">'.'</span><span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  cursor<span class="Delimiter">.</span>skip_whitespace_and_comments<span class="Delimiter">();</span>
+  assert<span class="Delimiter">(</span>cursor<span class="Delimiter">.</span>at_end<span class="Delimiter">());</span>
+<span class="Delimiter">}</span>
+
+raw_string_stream::raw_string_stream<span class="Delimiter">(</span>const string&amp; backing<span class="Delimiter">)</span> :index<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">),</span> max<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>backing<span class="Delimiter">)),</span> buf<span class="Delimiter">(</span>backing<span class="Delimiter">.</span>c_str<span class="Delimiter">())</span> <span class="Delimiter">{}</span>
+
+bool raw_string_stream::at_end<span class="Delimiter">()</span> const <span class="Delimiter">{</span>
+  if <span class="Delimiter">(</span>index &gt;= max<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+  if <span class="Delimiter">(</span>tb_utf8_char_length<span class="Delimiter">(</span>buf[index]<span class="Delimiter">)</span> &gt; max-index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    raise_error &lt;&lt; <span class="Constant">&quot;unicode string seems corrupted at index &quot;</span>&lt;&lt; index &lt;&lt; <span class="Constant">&quot; character &quot;</span> &lt;&lt; static_cast&lt;int&gt;<span class="Delimiter">(</span>buf[index]<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
+    <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
+  <span class="Delimiter">}</span>
+  <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+uint32_t raw_string_stream::get<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+  assert<span class="Delimiter">(</span>index &lt; max<span class="Delimiter">);</span>  <span class="Comment">// caller must check bounds before calling 'get'</span>
+  uint32_t result = <span class="Constant">0</span><span class="Delimiter">;</span>
+  int length = tb_utf8_char_to_unicode<span class="Delimiter">(</span>&amp;result<span class="Delimiter">,</span> &amp;buf[index]<span class="Delimiter">);</span>
+  assert<span class="Delimiter">(</span>length != TB_EOF<span class="Delimiter">);</span>
+  index += length<span class="Delimiter">;</span>
+  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+uint32_t raw_string_stream::peek<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+  assert<span class="Delimiter">(</span>index &lt; max<span class="Delimiter">);</span>  <span class="Comment">// caller must check bounds before calling 'get'</span>
+  uint32_t result = <span class="Constant">0</span><span class="Delimiter">;</span>
+  int length = tb_utf8_char_to_unicode<span class="Delimiter">(</span>&amp;result<span class="Delimiter">,</span> &amp;buf[index]<span class="Delimiter">);</span>
+  assert<span class="Delimiter">(</span>length != TB_EOF<span class="Delimiter">);</span>
+  <span class="Identifier">return</span> result<span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+void raw_string_stream::skip_whitespace_and_comments<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+  while <span class="Delimiter">(</span>!at_end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
+    if <span class="Delimiter">(</span>isspace<span class="Delimiter">(</span>peek<span class="Delimiter">()))</span> get<span class="Delimiter">();</span>
+    else if <span class="Delimiter">(</span>peek<span class="Delimiter">()</span> == <span class="Constant">'#'</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Comment">// skip comment</span>
+      get<span class="Delimiter">();</span>
+      while <span class="Delimiter">(</span>peek<span class="Delimiter">()</span> != <span class="cSpecial">'\n'</span><span class="Delimiter">)</span> get<span class="Delimiter">();</span>  <span class="Comment">// implicitly also handles CRLF</span>
+    <span class="Delimiter">}</span>
+    else <span class="Identifier">break</span><span class="Delimiter">;</span>
+  <span class="Delimiter">}</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
+_DUMP_SCREEN<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;$dump-screen&quot;</span><span class="Delimiter">,</span> _DUMP_SCREEN<span class="Delimiter">);</span>
+<span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
+case _DUMP_SCREEN: <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 _DUMP_SCREEN: <span class="Delimiter">{</span>
+  dump_screen<span class="Delimiter">();</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
+<span class="Delimiter">:(code)</span>
+void dump_screen<span class="Delimiter">()</span> <span class="Delimiter">{</span>
+  assert<span class="Delimiter">(</span>!current_call<span class="Delimiter">().</span>default_space<span class="Delimiter">);</span>  <span class="Comment">// not supported</span>
+  long long int screen_location = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> SCREEN<span class="Delimiter">);</span>
+  int width_offset = find_element_name<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;screen&quot;</span><span class="Delimiter">),</span> <span class="Constant">&quot;num-columns&quot;</span><span class="Delimiter">,</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
+  long long int screen_width = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> screen_location+width_offset<span class="Delimiter">);</span>
+  int height_offset = find_element_name<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;screen&quot;</span><span class="Delimiter">),</span> <span class="Constant">&quot;num-rows&quot;</span><span class="Delimiter">,</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
+  long long int screen_height = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> screen_location+height_offset<span class="Delimiter">);</span>
+  int data_offset = find_element_name<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;screen&quot;</span><span class="Delimiter">),</span> <span class="Constant">&quot;data&quot;</span><span class="Delimiter">,</span> <span class="Constant">&quot;&quot;</span><span class="Delimiter">);</span>
+  assert<span class="Delimiter">(</span>data_offset &gt;= <span class="Constant">0</span><span class="Delimiter">);</span>
+  long long int screen_data_location = screen_location+data_offset<span class="Delimiter">;</span>  <span class="Comment">// type: address:array:character</span>
+  long long int screen_data_start = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> screen_data_location<span class="Delimiter">);</span>  <span class="Comment">// type: array:character</span>
+  assert<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> screen_data_start<span class="Delimiter">)</span> == screen_width*screen_height<span class="Delimiter">);</span>
+  long long int curr = screen_data_start+<span class="Constant">1</span><span class="Delimiter">;</span>  <span class="Comment">// skip length</span>
+  for <span class="Delimiter">(</span>long long int row = <span class="Constant">0</span><span class="Delimiter">;</span> row &lt; screen_height<span class="Delimiter">;</span> ++row<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+    cerr &lt;&lt; <span class="Constant">'.'</span><span class="Delimiter">;</span>
+    for <span class="Delimiter">(</span>long long int col = <span class="Constant">0</span><span class="Delimiter">;</span> col &lt; screen_width<span class="Delimiter">;</span> ++col<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      if <span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">))</span>
+        cerr &lt;&lt; to_unicode<span class="Delimiter">(</span>static_cast&lt;uint32_t&gt;<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> curr<span class="Delimiter">)));</span>
+      else
+        cerr &lt;&lt; <span class="Constant">' '</span><span class="Delimiter">;</span>
+      curr += <span class="Comment">/*</span><span class="Comment">size of screen-cell</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">;</span>
+    <span class="Delimiter">}</span>
+    cerr &lt;&lt; <span class="Constant">&quot;.</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span><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/082scenario_screen.cc.html
parent	05d3592047a76db4cc8d77102508c21ca1b86e7b (diff)
download	mu-c603cd6cef43100aa83a62e15f96fd54c9fb987e.tar.gz