1111 lines
147 KiB
HTML
1111 lines
147 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<head>
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<title>2/lc</title>
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<meta name="viewport" content="width=device-width initial-scale=1">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<meta http-equiv="Content-Language" content="en-gb">
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<link href="../inweb.css" rel="stylesheet" rev="stylesheet" type="text/css">
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</head>
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<body>
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<nav role="navigation">
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<h1><a href="../webs.html">Sources</a></h1>
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<ul>
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<li><a href="../inweb/index.html">inweb</a></li>
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</ul>
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<h2>Foundation</h2>
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<ul>
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<li><a href="../foundation-module/index.html">foundation-module</a></li>
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<li><a href="../foundation-test/index.html">foundation-test</a></li>
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</ul>
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</nav>
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<main role="main">
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<!--Weave of '2/tp' generated by 7-->
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<ul class="crumbs"><li><a href="../webs.html">Source</a></li><li><a href="index.html">inweb</a></li><li><a href="index.html#2">Chapter 2: Parsing a Web</a></li><li><b>The Parser</b></li></ul><p class="purpose">To work through the program read in, assigning each line its category, and noting down other useful information as we go.</p>
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<ul class="toc"><li><a href="#SP1">§1. Sequence of parsing</a></li><li><a href="#SP1_1_6">§1.1.6. Categorisatiom</a></li><li><a href="#SP3">§3. Version errors</a></li></ul><hr class="tocbar">
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<p class="inwebparagraph"><a id="SP1"></a><b>§1. Sequence of parsing. </b>At this point, thw web has been read into memory. It's a linked list of
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chapters, each of which is a linked list of sections, each of which must
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be parsed in turn.
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</p>
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<p class="inwebparagraph">When we're done, we offer the support code for the web's programming language
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a chance to do some further work, if it wants to. (This is how, for example,
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function definitions are recognised in C programs.) There is no requirement
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for it to do anything.
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</p>
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<pre class="display">
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Parser::parse_web</span><span class="plain">(</span><span class="reserved">web</span><span class="plain"> *</span><span class="identifier">W</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">inweb_mode</span><span class="plain">) {</span>
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<span class="reserved">chapter</span><span class="plain"> *</span><span class="identifier">C</span><span class="plain">;</span>
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<span class="reserved">section</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain">;</span>
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<span class="identifier">LOOP_OVER_LINKED_LIST</span><span class="plain">(</span><span class="identifier">C</span><span class="plain">, </span><span class="reserved">chapter</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">-</span><span class="element">>chapters</span><span class="plain">)</span>
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<span class="identifier">LOOP_OVER_LINKED_LIST</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">, </span><span class="reserved">section</span><span class="plain">, </span><span class="identifier">C</span><span class="plain">-</span><span class="element">>sections</span><span class="plain">)</span>
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<<span class="cwebmacro">Parse a section</span> <span class="cwebmacronumber">1.1</span>><span class="plain">;</span>
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<span class="functiontext">Languages::further_parsing</span><span class="plain">(</span><span class="identifier">W</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">-</span><span class="element">>main_language</span><span class="plain">);</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">The function Parser::parse_web is used in 2/tr (<a href="2-tr.html#SP2">§2</a>).</p>
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<p class="inwebparagraph"><a id="SP1_1"></a><b>§1.1. </b>The task now is to parse those source lines, categorise them, and group them
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further into a linked list of paragraphs. The basic method would be simple
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enough, but is made more elaborate by supporting both version 1 and version 2
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markup syntax, and trying to detect incorrect uses of one within the other.
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</p>
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<p class="macrodefinition"><code class="display">
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<<span class="cwebmacrodefn">Parse a section</span> <span class="cwebmacronumber">1.1</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="reserved">int</span><span class="plain"> </span><span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
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<span class="reserved">int</span><span class="plain"> </span><span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">NO_LCAT</span><span class="plain">;</span>
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<span class="reserved">int</span><span class="plain"> </span><span class="identifier">before_bar</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
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<span class="reserved">int</span><span class="plain"> </span><span class="identifier">next_par_number</span><span class="plain"> = 1;</span>
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<span class="reserved">paragraph</span><span class="plain"> *</span><span class="identifier">current_paragraph</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
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<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">tag_list</span><span class="plain">);</span>
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<span class="reserved">for</span><span class="plain"> (</span><span class="reserved">source_line</span><span class="plain"> *</span><span class="identifier">L</span><span class="plain"> = </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>first_line</span><span class="plain">, *</span><span class="identifier">PL</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">; </span><span class="identifier">L</span><span class="plain">; </span><span class="identifier">PL</span><span class="plain"> = </span><span class="identifier">L</span><span class="plain">, </span><span class="identifier">L</span><span class="plain"> = </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">) {</span>
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<<span class="cwebmacro">Apply tag list, if any</span> <span class="cwebmacronumber">1.1.2</span>><span class="plain">;</span>
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<<span class="cwebmacro">Remove tag list, if any</span> <span class="cwebmacronumber">1.1.1</span>><span class="plain">;</span>
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<<span class="cwebmacro">Detect implied paragraph breaks</span> <span class="cwebmacronumber">1.1.5</span>><span class="plain">;</span>
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<<span class="cwebmacro">Determine category for this source line</span> <span class="cwebmacronumber">1.1.6</span>><span class="plain">;</span>
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<span class="plain">}</span>
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<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">tag_list</span><span class="plain">);</span>
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<<span class="cwebmacro">In version 2 syntax, construe the comment under the heading as the purpose</span> <span class="cwebmacronumber">1.1.4</span>><span class="plain">;</span>
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<<span class="cwebmacro">If the section as a whole is tagged, apply that tag to each paragraph in it</span> <span class="cwebmacronumber">1.1.3</span>><span class="plain">;</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="#SP1">§1</a>.</p>
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<p class="inwebparagraph"><a id="SP1_1_1"></a><b>§1.1.1. </b>In versiom 2 syntax, the notation for tags was clarified. The tag list
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for a paragraph is the run of <code class="display"><span class="extract">^"This"</span></code> and <code class="display"><span class="extract">^"That"</span></code> markers at the end of
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the line introducing that paragraph. They can only occur, therefore, on a
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line beginning with an <code class="display"><span class="extract">@</span></code>. We extract them into a string called <code class="display"><span class="extract">tag_list</span></code>.
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(The reason we can't act on them straight away, which would make for simpler
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code, is that they need to be applied to a paragraph structure which doesn't
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yet exist — it will only exist when the line has been fully parsed.)
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</p>
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<p class="macrodefinition"><code class="display">
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<<span class="cwebmacrodefn">Remove tag list, if any</span> <span class="cwebmacronumber">1.1.1</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">) == </span><span class="character">'@'</span><span class="plain">) {</span>
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<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
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<span class="reserved">while</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%c*?)( *%^\</span><span class="plain">"</span><span class="string">%c+?\</span><span class="plain">"</span><span class="string">)(%c*)"</span><span class="plain">)) {</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> < </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
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<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"tags written ^\</span><span class="plain">"</span><span class="string">thus\</span><span class="plain">"</span><span class="string">"</span><span class="plain">, </span><span class="constant">V2_SYNTAX</span><span class="plain">);</span>
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<span class="functiontext">Str::clear</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">);</span>
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<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">tag_list</span><span class="plain">, </span><span class="string">"%S"</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
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<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]); </span><span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="string">" %S"</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[2]);</span>
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<span class="plain">}</span>
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<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="#SP1_1">§1.1</a>.</p>
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<p class="inwebparagraph"><a id="SP1_1_2"></a><b>§1.1.2. </b>And now it's later, and we can safely apply the tags. <code class="display"><span class="extract">current_paragraph</span></code>
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now points to the para which was created by this line, not the one before.
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</p>
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<p class="macrodefinition"><code class="display">
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<<span class="cwebmacrodefn">Apply tag list, if any</span> <span class="cwebmacronumber">1.1.2</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
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<span class="reserved">while</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">tag_list</span><span class="plain">, </span><span class="identifier">L</span><span class="string">" *%^\</span><span class="plain">"</span><span class="string">(%c+?)\</span><span class="plain">"</span><span class="string"> *(%c*)"</span><span class="plain">)) {</span>
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<span class="functiontext">Tags::add_by_name</span><span class="plain">(</span><span class="identifier">current_paragraph</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
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<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">tag_list</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
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<span class="plain">}</span>
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<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
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<span class="functiontext">Str::clear</span><span class="plain">(</span><span class="identifier">tag_list</span><span class="plain">);</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="#SP1_1">§1.1</a>.</p>
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<p class="inwebparagraph"><a id="SP1_1_3"></a><b>§1.1.3. </b><code class="display">
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<<span class="cwebmacrodefn">If the section as a whole is tagged, apply that tag to each paragraph in it</span> <span class="cwebmacronumber">1.1.3</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="reserved">paragraph</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">;</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>tag_with</span><span class="plain">)</span>
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<span class="identifier">LOOP_OVER_LINKED_LIST</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">paragraph</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>paragraphs</span><span class="plain">)</span>
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<span class="functiontext">Tags::add_to_paragraph</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>tag_with</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="#SP1_1">§1.1</a>.</p>
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<p class="inwebparagraph"><a id="SP1_1_4"></a><b>§1.1.4. </b>The "purpose" of a section is a brief note about what it's for. In version 1
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syntax, this had to be explicitly declared with a <code class="display"><span class="extract">@Purpose:</span></code> command; in
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version 2 it's much tidier.
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</p>
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<p class="macrodefinition"><code class="display">
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<<span class="cwebmacrodefn">In version 2 syntax, construe the comment under the heading as the purpose</span> <span class="cwebmacronumber">1.1.4</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">) {</span>
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<span class="reserved">source_line</span><span class="plain"> *</span><span class="identifier">L</span><span class="plain"> = </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>first_line</span><span class="plain">;</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">L</span><span class="plain">) && (</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> == </span><span class="constant">CHAPTER_HEADING_LCAT</span><span class="plain">)) </span><span class="identifier">L</span><span class="plain"> = </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">;</span>
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<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_purpose</span><span class="plain"> = </span><span class="functiontext">Parser::extract_purpose</span><span class="plain">(</span><span class="identifier">I</span><span class="string">""</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">?</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">: </span><span class="identifier">NULL</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_purpose</span><span class="plain">) > 0) </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">PURPOSE_LCAT</span><span class="plain">;</span>
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<span class="plain">}</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="#SP1_1">§1.1</a>.</p>
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<p class="inwebparagraph"><a id="SP1_1_5"></a><b>§1.1.5. </b>A new paragraph is implied when a macro definition begins in the middle of
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what otherwise would be code, or when a paragraph and its code divider are
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immediately adjacent on the same line.
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</p>
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<p class="macrodefinition"><code class="display">
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<<span class="cwebmacrodefn">Detect implied paragraph breaks</span> <span class="cwebmacronumber">1.1.5</span>> =
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</code></p>
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<pre class="displaydefn">
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<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">PL</span><span class="plain">) && (</span><span class="identifier">PL</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> == </span><span class="constant">CODE_BODY_LCAT</span><span class="plain">) &&</span>
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<span class="plain">(</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">) == </span><span class="character">'@'</span><span class="plain">) && (</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, 1) == </span><span class="character">'<'</span><span class="plain">) &&</span>
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<span class="plain">(</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"%c<(%c+)@> *= *"</span><span class="plain">)) &&</span>
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<span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">)) {</span>
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<<span class="cwebmacro">Insert an implied paragraph break</span> <span class="cwebmacronumber">1.1.5.1</span>><span class="plain">;</span>
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<span class="plain">}</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">PL</span><span class="plain">) && (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"@ *= *"</span><span class="plain">))) {</span>
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<span class="functiontext">Str::clear</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">);</span>
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<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"="</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> < </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"implied paragraph breaks"</span><span class="plain">, </span><span class="constant">V2_SYNTAX</span><span class="plain">);</span>
|
|
<<span class="cwebmacro">Insert an implied paragraph break</span> <span class="cwebmacronumber">1.1.5.1</span>><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1">§1.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_5_1"></a><b>§1.1.5.1. </b>We handle implied paragraph dividers by inserting a paragraph marker and
|
|
reparsing from there.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Insert an implied paragraph break</span> <span class="cwebmacronumber">1.1.5.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">source_line</span><span class="plain"> *</span><span class="identifier">NL</span><span class="plain"> = </span><span class="functiontext">Lines::new_source_line</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"@"</span><span class="plain">, &(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>source</span><span class="plain">));</span>
|
|
<span class="identifier">PL</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain"> = </span><span class="identifier">NL</span><span class="plain">;</span>
|
|
<span class="identifier">NL</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain"> = </span><span class="identifier">L</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain"> = </span><span class="identifier">PL</span><span class="plain">;</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
<span class="reserved">continue</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_5">§1.1.5</a> (twice).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6"></a><b>§1.1.6. Categorisatiom. </b>This is where the work is really done. We have a source line: is it comment,
|
|
code, definition, what?
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Determine category for this source line</span> <span class="cwebmacronumber">1.1.6</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="identifier">comment_mode</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">COMMENT_BODY_LCAT</span><span class="plain">; </span> <span class="comment">until set otherwise down below</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>owning_paragraph</span><span class="plain"> = </span><span class="identifier">current_paragraph</span><span class="plain">;</span>
|
|
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>source.line_count</span><span class="plain"> == 0) </span><<span class="cwebmacro">Parse the line as a probable chapter heading</span> <span class="cwebmacronumber">1.1.6.1</span>><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>source.line_count</span><span class="plain"> <= 1) </span><<span class="cwebmacro">Parse the line as a probable section heading</span> <span class="cwebmacronumber">1.1.6.2</span>><span class="plain">;</span>
|
|
<<span class="cwebmacro">Parse the line as a possible Inweb command</span> <span class="cwebmacronumber">1.1.6.3</span>><span class="plain">;</span>
|
|
<<span class="cwebmacro">Parse the line as a possible paragraph macro definition</span> <span class="cwebmacronumber">1.1.6.4</span>><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">) == </span><span class="character">'='</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> < </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"column-1 '=' as code divider"</span><span class="plain">, </span><span class="constant">V2_SYNTAX</span><span class="plain">);</span>
|
|
<<span class="cwebmacro">Parse the line as an equals structural marker</span> <span class="cwebmacronumber">1.1.6.6</span>><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">) == </span><span class="character">'@'</span><span class="plain">) &&</span>
|
|
<span class="plain">(</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, 1) != </span><span class="character">'<'</span><span class="plain">) &&</span>
|
|
<span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> != </span><span class="constant">MACRO_DEFINITION_LCAT</span><span class="plain">))</span>
|
|
<<span class="cwebmacro">Parse the line as a structural marker</span> <span class="cwebmacronumber">1.1.6.5</span>><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">comment_mode</span><span class="plain">) </span><<span class="cwebmacro">This is a line destined for commentary</span> <span class="cwebmacronumber">1.1.6.7</span>><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">comment_mode</span><span class="plain"> == </span><span class="constant">FALSE</span><span class="plain">) </span><<span class="cwebmacro">This is a line destined for the verbatim code</span> <span class="cwebmacronumber">1.1.6.8</span>><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1">§1.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_1"></a><b>§1.1.6.1. </b>This must be one of the inserted lines marking chapter headings; it doesn't
|
|
come literally from the source web.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Parse the line as a probable chapter heading</span> <span class="cwebmacronumber">1.1.6.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Chapter Heading"</span><span class="plain">)) {</span>
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">CHAPTER_HEADING_LCAT</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_2"></a><b>§1.1.6.2. </b>The top line of a section gives its title and range; in InC, it can
|
|
also give the namespace for its functions.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Parse the line as a probable section heading</span> <span class="cwebmacronumber">1.1.6.2</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"%[(%C+)%] (%C+/%C+): (%c+)."</span><span class="plain">)) {</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_namespace</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_title</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[2]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[2]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">SECTION_HEADING_LCAT</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%C+/%C+): (%c+)."</span><span class="plain">)) {</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_title</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">SECTION_HEADING_LCAT</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"%[(%C+::)%] (%c+)."</span><span class="plain">)) {</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_namespace</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_title</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<<span class="cwebmacro">Set the range to an automatic abbreviation of the relative pathname</span> <span class="cwebmacronumber">1.1.6.2.1</span>><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">SECTION_HEADING_LCAT</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%c+)."</span><span class="plain">)) {</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_title</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<<span class="cwebmacro">Set the range to an automatic abbreviation of the relative pathname</span> <span class="cwebmacronumber">1.1.6.2.1</span>><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">SECTION_HEADING_LCAT</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_2_1"></a><b>§1.1.6.2.1. </b>If no range is supplied, we make one ourselves.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Set the range to an automatic abbreviation of the relative pathname</span> <span class="cwebmacronumber">1.1.6.2.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">();</span>
|
|
|
|
<span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">from</span><span class="plain"> = </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_title</span><span class="plain">;</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">letters_from_each_word</span><span class="plain"> = 5;</span>
|
|
<span class="reserved">do</span><span class="plain"> {</span>
|
|
<span class="functiontext">Str::clear</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">);</span>
|
|
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">, </span><span class="string">"%S/"</span><span class="plain">, </span><span class="identifier">C</span><span class="plain">-</span><span class="element">>ch_range</span><span class="plain">);</span>
|
|
<<span class="cwebmacro">Make the tail using this many consonants from each word</span> <span class="cwebmacronumber">1.1.6.2.1.1</span>><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (--</span><span class="identifier">letters_from_each_word</span><span class="plain"> == 0) </span><span class="reserved">break</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">while</span><span class="plain"> (</span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">) > 5);</span>
|
|
|
|
<<span class="cwebmacro">Terminate with disambiguating numbers in case of collisions</span> <span class="cwebmacronumber">1.1.6.2.1.2</span>><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_2">§1.1.6.2</a> (twice).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_2_1_1"></a><b>§1.1.6.2.1.1. </b>We collapse words to an initial letter plus consonants: thus "electricity"
|
|
would be "elctrcty", since we don't count "y" as a vowel here.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Make the tail using this many consonants from each word</span> <span class="cwebmacronumber">1.1.6.2.1.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">sn</span><span class="plain"> = 0, </span><span class="identifier">sw</span><span class="plain"> = </span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">from</span><span class="plain">, </span><span class="identifier">sn</span><span class="plain">) == </span><span class="constant">FOLDER_SEPARATOR</span><span class="plain">) </span><span class="identifier">sn</span><span class="plain">++;</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">letters_from_current_word</span><span class="plain"> = 0;</span>
|
|
<span class="reserved">while</span><span class="plain"> ((</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">from</span><span class="plain">, </span><span class="identifier">sn</span><span class="plain">)) && (</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">from</span><span class="plain">, </span><span class="identifier">sn</span><span class="plain">) != </span><span class="character">'.'</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">from</span><span class="plain">, </span><span class="identifier">sn</span><span class="plain">) == </span><span class="character">' '</span><span class="plain">) </span><span class="identifier">letters_from_current_word</span><span class="plain"> = 0;</span>
|
|
<span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">letters_from_current_word</span><span class="plain"> < </span><span class="identifier">letters_from_each_word</span><span class="plain">) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">from</span><span class="plain">, </span><span class="identifier">sn</span><span class="plain">) != </span><span class="character">'-'</span><span class="plain">) {</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">l</span><span class="plain"> = </span><span class="identifier">tolower</span><span class="plain">(</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">from</span><span class="plain">, </span><span class="identifier">sn</span><span class="plain">));</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">letters_from_current_word</span><span class="plain"> == 0) ||</span>
|
|
<span class="plain">((</span><span class="identifier">l</span><span class="plain"> != </span><span class="character">'a'</span><span class="plain">) && (</span><span class="identifier">l</span><span class="plain"> != </span><span class="character">'e'</span><span class="plain">) && (</span><span class="identifier">l</span><span class="plain"> != </span><span class="character">'i'</span><span class="plain">) && (</span><span class="identifier">l</span><span class="plain"> != </span><span class="character">'o'</span><span class="plain">) && (</span><span class="identifier">l</span><span class="plain"> != </span><span class="character">'u'</span><span class="plain">))) {</span>
|
|
<span class="functiontext">Str::put_at</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">, </span><span class="identifier">sw</span><span class="plain">++, </span><span class="identifier">l</span><span class="plain">); </span><span class="functiontext">Str::put_at</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">, </span><span class="identifier">sw</span><span class="plain">, 0);</span>
|
|
<span class="identifier">letters_from_current_word</span><span class="plain">++;</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">}</span>
|
|
<span class="identifier">sn</span><span class="plain">++;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_2_1">§1.1.6.2.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_2_1_2"></a><b>§1.1.6.2.1.2. </b>We never want two sections to have the same range.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Terminate with disambiguating numbers in case of collisions</span> <span class="cwebmacronumber">1.1.6.2.1.2</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">original_range</span><span class="plain">);</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">original_range</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">);</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">disnum</span><span class="plain"> = 0, </span><span class="identifier">collision</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="reserved">do</span><span class="plain"> {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">disnum</span><span class="plain">++ > 0) {</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">ldn</span><span class="plain"> = 4;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">disnum</span><span class="plain"> >= 1000) </span><span class="identifier">ldn</span><span class="plain"> = 3;</span>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="identifier">disnum</span><span class="plain"> >= 100) </span><span class="identifier">ldn</span><span class="plain"> = 2;</span>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="identifier">disnum</span><span class="plain"> >= 10) </span><span class="identifier">ldn</span><span class="plain"> = 1;</span>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="identifier">ldn</span><span class="plain"> = 0;</span>
|
|
<span class="functiontext">Str::clear</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">);</span>
|
|
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">, </span><span class="string">"%S"</span><span class="plain">, </span><span class="identifier">original_range</span><span class="plain">);</span>
|
|
<span class="functiontext">Str::truncate</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">, </span><span class="functiontext">Str::len</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">) - </span><span class="identifier">ldn</span><span class="plain">);</span>
|
|
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">, </span><span class="string">"%d"</span><span class="plain">, </span><span class="identifier">disnum</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="identifier">collision</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="reserved">chapter</span><span class="plain"> *</span><span class="identifier">C</span><span class="plain">;</span>
|
|
<span class="reserved">section</span><span class="plain"> *</span><span class="identifier">S2</span><span class="plain">;</span>
|
|
<span class="identifier">LOOP_OVER_LINKED_LIST</span><span class="plain">(</span><span class="identifier">C</span><span class="plain">, </span><span class="reserved">chapter</span><span class="plain">, </span><span class="identifier">W</span><span class="plain">-</span><span class="element">>chapters</span><span class="plain">)</span>
|
|
<span class="identifier">LOOP_OVER_LINKED_LIST</span><span class="plain">(</span><span class="identifier">S2</span><span class="plain">, </span><span class="reserved">section</span><span class="plain">, </span><span class="identifier">C</span><span class="plain">-</span><span class="element">>sections</span><span class="plain">)</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">S2</span><span class="plain"> != </span><span class="identifier">S</span><span class="plain">) && (</span><span class="functiontext">Str::eq</span><span class="plain">(</span><span class="identifier">S2</span><span class="plain">-</span><span class="element">>range</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>range</span><span class="plain">))) {</span>
|
|
<span class="identifier">collision</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">; </span><span class="reserved">break</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">} </span><span class="reserved">while</span><span class="plain"> (</span><span class="identifier">collision</span><span class="plain">);</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">original_range</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_2_1">§1.1.6.2.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_3"></a><b>§1.1.6.3. </b>Version 1 syntax was cluttered up with a number of hardly-used markup
|
|
syntaxes called "commands", written in double squared brackets <code class="display"><span class="extract">[[Thus]]</span></code>.
|
|
In version 2, this notation is used only for figures.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Parse the line as a possible Inweb command</span> <span class="cwebmacronumber">1.1.6.3</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"%[%[(%c+)%]%]"</span><span class="plain">)) {</span>
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">full_command</span><span class="plain">);</span>
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">);</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">full_command</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">COMMAND_LCAT</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%c+?): *(%c+)"</span><span class="plain">)) {</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<span class="plain">}</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Page Break"</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> > </span><span class="constant">V1_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"[[Page Break]]"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>command_code</span><span class="plain"> = </span><span class="constant">PAGEBREAK_CMD</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Grammar Index"</span><span class="plain">))</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>command_code</span><span class="plain"> = </span><span class="constant">GRAMMAR_INDEX_CMD</span><span class="plain">;</span>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Tag"</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> > </span><span class="constant">V1_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"[[Tag...]]"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="functiontext">Tags::add_by_name</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>owning_paragraph</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>command_code</span><span class="plain"> = </span><span class="constant">TAG_CMD</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Figure"</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> > </span><span class="constant">V1_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"[[Figure...]]"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="functiontext">Tags::add_by_name</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>owning_paragraph</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"Figures"</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>command_code</span><span class="plain"> = </span><span class="constant">FIGURE_CMD</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">) {</span>
|
|
<span class="functiontext">Tags::add_by_name</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>owning_paragraph</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"Figures"</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>command_code</span><span class="plain"> = </span><span class="constant">FIGURE_CMD</span><span class="plain">;</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="identifier">full_command</span><span class="plain">);</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"unknown [[command]]"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">}</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">);</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">full_command</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_4"></a><b>§1.1.6.4. </b>Some paragraphs define angle-bracketed macros, and those need special
|
|
handling. We'll call these "paragraph macros".
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Parse the line as a possible paragraph macro definition</span> <span class="cwebmacronumber">1.1.6.4</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">) == </span><span class="character">'@'</span><span class="plain">) && (</span><span class="functiontext">Str::get_at</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, 1) == </span><span class="character">'<'</span><span class="plain">) &&</span>
|
|
<span class="plain">(</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"%c<(%c+)@> *= *"</span><span class="plain">))) {</span>
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">para_macro_name</span><span class="plain">);</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">para_macro_name</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">MACRO_DEFINITION_LCAT</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">current_paragraph</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">)</span>
|
|
<span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"<...> definition begins outside of a paragraph"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="functiontext">Macros::create</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">current_paragraph</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="identifier">para_macro_name</span><span class="plain">);</span>
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">CODE_BODY_LCAT</span><span class="plain">; </span> <span class="comment">code follows on subsequent lines</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">para_macro_name</span><span class="plain">);</span>
|
|
<span class="reserved">continue</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5"></a><b>§1.1.6.5. </b>A structural marker is introduced by an <code class="display"><span class="extract">@</span></code> in column 1, and is a structural
|
|
division in the current section.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Parse the line as a structural marker</span> <span class="cwebmacronumber">1.1.6.5</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">);</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">);</span>
|
|
<span class="functiontext">Str::delete_first_character</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">); </span> <span class="comment">i.e., strip the at-sign from the front</span>
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">);</span>
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%C*) *(%c*?)"</span><span class="plain">)) {</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<span class="plain">}</span>
|
|
<<span class="cwebmacro">Deal with a structural marker</span> <span class="cwebmacronumber">1.1.6.5.1</span>><span class="plain">;</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">);</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">);</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
<span class="reserved">continue</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_6"></a><b>§1.1.6.6. </b>An equals sign in column 1 is also a structural marker:
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Parse the line as an equals structural marker</span> <span class="cwebmacronumber">1.1.6.6</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">BEGIN_CODE_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">CODE_BODY_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"= *(%c+) *"</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">current_paragraph</span><span class="plain">) && (</span><span class="functiontext">Str::eq</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0], </span><span class="identifier">I</span><span class="string">"(very early code)"</span><span class="plain">))) {</span>
|
|
<span class="identifier">current_paragraph</span><span class="plain">-</span><span class="element">>placed_very_early</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">current_paragraph</span><span class="plain">) && (</span><span class="functiontext">Str::eq</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0], </span><span class="identifier">I</span><span class="string">"(early code)"</span><span class="plain">))) {</span>
|
|
<span class="identifier">current_paragraph</span><span class="plain">-</span><span class="element">>placed_early</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">current_paragraph</span><span class="plain">) && (</span><span class="functiontext">Str::eq</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0], </span><span class="identifier">I</span><span class="string">"(not code)"</span><span class="plain">))) {</span>
|
|
<span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">TEXT_EXTRACT_LCAT</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"unknown bracketed annotation"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"= *%C%c*"</span><span class="plain">)) {</span>
|
|
<span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"unknown material after '='"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
<span class="reserved">continue</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1"></a><b>§1.1.6.5.1. </b>So here we have the possibilities which start with a column-1 <code class="display"><span class="extract">@</span></code> sign.
|
|
There appear to be hordes of these, but in fact most of them were removed
|
|
in Inweb syntax version 2: in modern syntax, only <code class="display"><span class="extract">@d</span></code>, <code class="display"><span class="extract">@e</span></code>, <code class="display"><span class="extract">@h</span></code>, their
|
|
long forms <code class="display"><span class="extract">@define</span></code>, <code class="display"><span class="extract">@enum</span></code> and <code class="display"><span class="extract">@heading</span></code>, and plain old <code class="display"><span class="extract">@</span></code> remain.
|
|
(But <code class="display"><span class="extract">@e</span></code> has a different meaning from in version 1.)
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with a structural marker</span> <span class="cwebmacronumber">1.1.6.5.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Purpose:"</span><span class="plain">)) </span><<span class="cwebmacro">Deal with Purpose</span> <span class="cwebmacronumber">1.1.6.5.1.1</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Interface:"</span><span class="plain">)) </span><<span class="cwebmacro">Deal with Interface</span> <span class="cwebmacronumber">1.1.6.5.1.2</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"Definitions:"</span><span class="plain">)) </span><<span class="cwebmacro">Deal with Definitions</span> <span class="cwebmacronumber">1.1.6.5.1.3</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"----+"</span><span class="plain">)) </span><<span class="cwebmacro">Deal with the bar</span> <span class="cwebmacronumber">1.1.6.5.1.4</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"c"</span><span class="plain">)) ||</span>
|
|
<span class="plain">(</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"x"</span><span class="plain">)) ||</span>
|
|
<span class="plain">((</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> == </span><span class="constant">V1_SYNTAX</span><span class="plain">) && (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"e"</span><span class="plain">))))</span>
|
|
<<span class="cwebmacro">Deal with the code and extract markers</span> <span class="cwebmacronumber">1.1.6.5.1.5</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"d"</span><span class="plain">)) </span><<span class="cwebmacro">Deal with the define marker</span> <span class="cwebmacronumber">1.1.6.5.1.6</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"define"</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> < </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@define' for definitions (use '@d' instead)"</span><span class="plain">, </span><span class="constant">V2_SYNTAX</span><span class="plain">);</span>
|
|
<<span class="cwebmacro">Deal with the define marker</span> <span class="cwebmacronumber">1.1.6.5.1.6</span>><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"enum"</span><span class="plain">)) </span><<span class="cwebmacro">Deal with the enumeration marker</span> <span class="cwebmacronumber">1.1.6.5.1.7</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"e"</span><span class="plain">)) && (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">))</span>
|
|
<<span class="cwebmacro">Deal with the enumeration marker</span> <span class="cwebmacronumber">1.1.6.5.1.7</span>>
|
|
<span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">weight</span><span class="plain"> = -1, </span><span class="identifier">new_page</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">""</span><span class="plain">)) </span><span class="identifier">weight</span><span class="plain"> = </span><span class="constant">ORDINARY_WEIGHT</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"h"</span><span class="plain">)) || (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"heading"</span><span class="plain">))) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> < </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@h' or '@heading' for headings (use '@p' instead)"</span><span class="plain">, </span><span class="constant">V2_SYNTAX</span><span class="plain">);</span>
|
|
<span class="identifier">weight</span><span class="plain"> = </span><span class="constant">SUBHEADING_WEIGHT</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"p"</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> > </span><span class="constant">V1_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@p' for headings (use '@h' instead)"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="identifier">weight</span><span class="plain"> = </span><span class="constant">SUBHEADING_WEIGHT</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"pp"</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> > </span><span class="constant">V1_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@pp' for super-headings"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="identifier">weight</span><span class="plain"> = </span><span class="constant">SUBHEADING_WEIGHT</span><span class="plain">; </span><span class="identifier">new_page</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">weight</span><span class="plain"> >= 0) </span><<span class="cwebmacro">Begin a new paragraph of this weight</span> <span class="cwebmacronumber">1.1.6.5.1.8</span>>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"don't understand @command"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5">§1.1.6.5</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_1"></a><b>§1.1.6.5.1.1. </b>In version 1 syntax there were some peculiar special headings above a divider
|
|
in the file made of hyphens, called "the bar". All of that has gone in V2.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with Purpose</span> <span class="cwebmacronumber">1.1.6.5.1.1</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">before_bar</span><span class="plain"> == </span><span class="constant">FALSE</span><span class="plain">) </span><span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"Purpose used after bar"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@Purpose'"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">PURPOSE_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">);</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_purpose</span><span class="plain"> = </span><span class="functiontext">Parser::extract_purpose</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>owning_section</span><span class="plain">, &</span><span class="identifier">L</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_2"></a><b>§1.1.6.5.1.2. </b><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with Interface</span> <span class="cwebmacronumber">1.1.6.5.1.2</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@Interface'"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">before_bar</span><span class="plain"> == </span><span class="constant">FALSE</span><span class="plain">) </span><span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"Interface used after bar"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">INTERFACE_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="reserved">source_line</span><span class="plain"> *</span><span class="identifier">XL</span><span class="plain"> = </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">;</span>
|
|
<span class="reserved">while</span><span class="plain"> ((</span><span class="identifier">XL</span><span class="plain">) && (</span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">) && (</span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>owning_section</span><span class="plain"> == </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>owning_section</span><span class="plain">)) {</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>text</span><span class="plain">) == </span><span class="character">'@'</span><span class="plain">) </span><span class="reserved">break</span><span class="plain">;</span>
|
|
<span class="identifier">XL</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">INTERFACE_BODY_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain"> = </span><span class="identifier">XL</span><span class="plain">;</span>
|
|
<span class="identifier">XL</span><span class="plain"> = </span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_3"></a><b>§1.1.6.5.1.3. </b><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with Definitions</span> <span class="cwebmacronumber">1.1.6.5.1.3</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@Definitions' headings"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">before_bar</span><span class="plain"> == </span><span class="constant">FALSE</span><span class="plain">) </span><span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"Definitions used after bar"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">DEFINITIONS_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">before_bar</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">next_par_number</span><span class="plain"> = 1;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_4"></a><b>§1.1.6.5.1.4. </b>An <code class="display"><span class="extract">@</span></code> sign in the first column, followed by a row of four or more dashes,
|
|
constitutes the optional division bar in a section.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with the bar</span> <span class="cwebmacronumber">1.1.6.5.1.4</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> >= </span><span class="constant">V2_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"the bar '----...'"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">before_bar</span><span class="plain"> == </span><span class="constant">FALSE</span><span class="plain">) </span><span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"second bar in the same section"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">BAR_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>barred</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">before_bar</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">next_par_number</span><span class="plain"> = 1;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_5"></a><b>§1.1.6.5.1.5. </b>In version 1, the division point where a paragraoh begins to go into
|
|
verbatim code was not marked with an equals sign, but with one of the three
|
|
commands <code class="display"><span class="extract">@c</span></code> ("code"), <code class="display"><span class="extract">@e</span></code> ("early code") and <code class="display"><span class="extract">@x</span></code> ("code-like extract").
|
|
These had identical behaviour except for whether or not to tangle what
|
|
follows:
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with the code and extract markers</span> <span class="cwebmacronumber">1.1.6.5.1.5</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> > </span><span class="constant">V1_SYNTAX</span><span class="plain">)</span>
|
|
<span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">, </span><span class="string">"'@c' and '@x'"</span><span class="plain">, </span><span class="constant">V1_SYNTAX</span><span class="plain">);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">BEGIN_CODE_LCAT</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"e"</span><span class="plain">)) && (</span><span class="identifier">current_paragraph</span><span class="plain">))</span>
|
|
<span class="identifier">current_paragraph</span><span class="plain">-</span><span class="element">>placed_early</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Str::eq_wide_string</span><span class="plain">(</span><span class="identifier">command_text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"x"</span><span class="plain">)) </span><span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">TEXT_EXTRACT_LCAT</span><span class="plain">;</span>
|
|
<span class="reserved">else</span><span class="plain"> </span><span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">CODE_BODY_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_6"></a><b>§1.1.6.5.1.6. </b>This is for <code class="display"><span class="extract">@d</span></code> and <code class="display"><span class="extract">@define</span></code>. Definitions are intended to translate to
|
|
C preprocessor macros, Inform 6 <code class="display"><span class="extract">Constant</span></code>s, and so on.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with the define marker</span> <span class="cwebmacronumber">1.1.6.5.1.6</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">BEGIN_DEFINITION_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">CONT_DEFINITION_LCAT</span><span class="plain">;</span>
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">remainder</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%C+) (%c+)"</span><span class="plain">)) {</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]); </span> <span class="comment">name of term defined</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand2</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]); </span> <span class="comment">Value</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">); </span> <span class="comment">name of term defined</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand2</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">(); </span> <span class="comment">no value given</span>
|
|
<span class="plain">}</span>
|
|
<span class="functiontext">Analyser::mark_reserved_word</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="constant">CONSTANT_COLOUR</span><span class="plain">);</span>
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a> (twice).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_7"></a><b>§1.1.6.5.1.7. </b>This is for <code class="display"><span class="extract">@e</span></code> (in version 2) and <code class="display"><span class="extract">@enum</span></code>, which makes an automatically
|
|
enumerated sort of <code class="display"><span class="extract">@d</span></code>.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Deal with the enumeration marker</span> <span class="cwebmacronumber">1.1.6.5.1.7</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">BEGIN_DEFINITION_LCAT</span><span class="plain">;</span>
|
|
<span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">from</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">); </span> <span class="comment">name of term defined</span>
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">before</span><span class="plain">);</span>
|
|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">after</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Languages::parse_comment</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_language</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">,</span>
|
|
<span class="identifier">before</span><span class="plain">, </span><span class="identifier">after</span><span class="plain">)) {</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="identifier">before</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">before</span><span class="plain">);</span>
|
|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">after</span><span class="plain">);</span>
|
|
<span class="functiontext">Str::trim_white_space</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%C+) from (%c+)"</span><span class="plain">)) {</span>
|
|
<span class="identifier">from</span><span class="plain"> = </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1];</span>
|
|
<span class="functiontext">Str::copy</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%C+) (%c+)"</span><span class="plain">)) {</span>
|
|
<span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"enumeration constants can't supply a value"</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand2</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">inweb_mode</span><span class="plain"> == </span><span class="constant">TANGLE_MODE</span><span class="plain">)</span>
|
|
<span class="functiontext">Enumerations::define</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand2</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="identifier">from</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
|
|
<span class="functiontext">Analyser::mark_reserved_word</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain">, </span><span class="constant">CONSTANT_COLOUR</span><span class="plain">);</span>
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a> (twice).</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_8"></a><b>§1.1.6.5.1.8. </b>Here we handle paragraph breaks which may or may not be headings. In
|
|
version 1, <code class="display"><span class="extract">@p</span></code> was a heading, and <code class="display"><span class="extract">@pp</span></code> a grander heading, while plain <code class="display"><span class="extract">@</span></code>
|
|
is no heading at all. The use of "p" was a little confusing, and went back
|
|
to CWEB, which used the term "paragraph" differently from us: it was "p"
|
|
short for what CWEB called a "paragraph". We now use <code class="display"><span class="extract">@h</span></code> or equivalently
|
|
<code class="display"><span class="extract">@heading</span></code> for a heading.
|
|
</p>
|
|
|
|
<p class="inwebparagraph">The noteworthy thing here is the way we fool around with the text on the line
|
|
of the paragraph opening. This is one of the few cases where Inweb has
|
|
retained the stream-based style of CWEB, where escape characters can appear
|
|
anywhere in a line and line breaks are not significant. Thus
|
|
</p>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="plain">@h The chronology of French weaving. Auguste de Papillon (1734-56) soon</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph">is split into two, so that the title of the paragraph is just "The chronology
|
|
of French weaving" and the remainder,
|
|
</p>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="plain">Auguste de Papillon (1734-56) soon</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph">will be woven exactly as the succeeding lines will be.
|
|
</p>
|
|
|
|
|
|
<pre class="definitions">
|
|
<span class="definitionkeyword">define</span> <span class="constant">ORDINARY_WEIGHT</span><span class="plain"> 0 </span> <span class="comment">an ordinary paragraph has this "weight"</span>
|
|
<span class="definitionkeyword">define</span> <span class="constant">SUBHEADING_WEIGHT</span><span class="plain"> 1 </span> <span class="comment">a heading paragraph</span>
|
|
</pre>
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">Begin a new paragraph of this weight</span> <span class="cwebmacronumber">1.1.6.5.1.8</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">PARAGRAPH_START_LCAT</span><span class="plain">;</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">weight</span><span class="plain"> == </span><span class="constant">SUBHEADING_WEIGHT</span><span class="plain">) </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">HEADING_START_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">(); </span> <span class="comment">title</span>
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">weight</span><span class="plain"> == </span><span class="constant">SUBHEADING_WEIGHT</span><span class="plain">) && (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">remainder</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%c+). (%c+)"</span><span class="plain">))) {</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand2</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[1]);</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> </span><span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">weight</span><span class="plain"> == </span><span class="constant">SUBHEADING_WEIGHT</span><span class="plain">) && (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">remainder</span><span class="plain">, </span><span class="identifier">L</span><span class="string">"(%c+). *"</span><span class="plain">))) {</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand2</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">();</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::new</span><span class="plain">();</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand2</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">remainder</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
<<span class="cwebmacro">Create a new paragraph, starting here, as new current paragraph</span> <span class="cwebmacronumber">1.1.6.5.1.8.2</span>><span class="plain">;</span>
|
|
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>owning_paragraph</span><span class="plain"> = </span><span class="identifier">current_paragraph</span><span class="plain">;</span>
|
|
<span class="identifier">W</span><span class="plain">-</span><span class="element">>no_paragraphs</span><span class="plain">++;</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1">§1.1.6.5.1</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_8_1"></a><b>§1.1.6.5.1.8.1. </b>So now it's time to create paragraph structures:
|
|
</p>
|
|
|
|
|
|
<pre class="display">
|
|
<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">struct</span><span class="plain"> </span><span class="reserved">paragraph</span><span class="plain"> {</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">above_bar</span><span class="plain">; </span> <span class="comment">placed above the dividing bar in its section (in Version 1 syntax)</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">placed_early</span><span class="plain">; </span> <span class="comment">should appear early in the tangled code</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">placed_very_early</span><span class="plain">; </span> <span class="comment">should appear very early in the tangled code</span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">ornament</span><span class="plain">; </span> <span class="comment">a "P" for a pilcrow or "S" for section-marker</span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">paragraph_number</span><span class="plain">; </span> <span class="comment">used in combination with the ornament</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">next_child_number</span><span class="plain">; </span> <span class="comment">used when working out paragraph numbers</span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">paragraph</span><span class="plain"> *</span><span class="identifier">parent_paragraph</span><span class="plain">; </span> <span class="comment">ditto</span>
|
|
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">weight</span><span class="plain">; </span> <span class="comment">typographic prominence: one of the <code class="display"><span class="extract">*_WEIGHT</span></code> values</span>
|
|
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">starts_on_new_page</span><span class="plain">; </span> <span class="comment">relevant for weaving to TeX only, of course</span>
|
|
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">para_macro</span><span class="plain"> *</span><span class="identifier">defines_macro</span><span class="plain">; </span> <span class="comment">there can only be one</span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">linked_list</span><span class="plain"> *</span><span class="identifier">functions</span><span class="plain">; </span> <span class="comment">of <code class="display"><span class="extract">function</span></code>: those defined in this para</span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">linked_list</span><span class="plain"> *</span><span class="identifier">structures</span><span class="plain">; </span> <span class="comment">of <code class="display"><span class="extract">c_structure</span></code>: similarly</span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">linked_list</span><span class="plain"> *</span><span class="identifier">taggings</span><span class="plain">; </span> <span class="comment">of <code class="display"><span class="extract">paragraph_tagging</span></code></span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">source_line</span><span class="plain"> *</span><span class="identifier">first_line_in_paragraph</span><span class="plain">;</span>
|
|
<span class="reserved">struct</span><span class="plain"> </span><span class="reserved">section</span><span class="plain"> *</span><span class="identifier">under_section</span><span class="plain">;</span>
|
|
<span class="constant">MEMORY_MANAGEMENT</span>
|
|
<span class="plain">} </span><span class="reserved">paragraph</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The structure paragraph is accessed in 2/pm, 2/tgs, 2/pn, 3/tw, 3/tt, 4/cl, 4/is, 5/ptf, 5/tf, 5/hf and here.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_5_1_8_2"></a><b>§1.1.6.5.1.8.2. </b><code class="display">
|
|
<<span class="cwebmacrodefn">Create a new paragraph, starting here, as new current paragraph</span> <span class="cwebmacronumber">1.1.6.5.1.8.2</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">paragraph</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = </span><span class="identifier">CREATE</span><span class="plain">(</span><span class="reserved">paragraph</span><span class="plain">);</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> > </span><span class="constant">V1_SYNTAX</span><span class="plain">) {</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>above_bar</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>placed_early</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>placed_very_early</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>above_bar</span><span class="plain"> = </span><span class="identifier">before_bar</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>placed_early</span><span class="plain"> = </span><span class="identifier">before_bar</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>placed_very_early</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="plain">}</span>
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>using_syntax</span><span class="plain"> == </span><span class="constant">V1_SYNTAX</span><span class="plain">) && (</span><span class="identifier">before_bar</span><span class="plain">))</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>ornament</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"P"</span><span class="plain">);</span>
|
|
<span class="reserved">else</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>ornament</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"S"</span><span class="plain">);</span>
|
|
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">-</span><span class="element">>paragraph_number</span><span class="plain">, </span><span class="string">"%d"</span><span class="plain">, </span><span class="identifier">next_par_number</span><span class="plain">++);</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>parent_paragraph</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>next_child_number</span><span class="plain"> = 1;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>starts_on_new_page</span><span class="plain"> = </span><span class="constant">FALSE</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>weight</span><span class="plain"> = </span><span class="identifier">weight</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>first_line_in_paragraph</span><span class="plain"> = </span><span class="identifier">L</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>defines_macro</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>functions</span><span class="plain"> = </span><span class="identifier">NEW_LINKED_LIST</span><span class="plain">(</span><span class="reserved">function</span><span class="plain">);</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>structures</span><span class="plain"> = </span><span class="identifier">NEW_LINKED_LIST</span><span class="plain">(</span><span class="reserved">c_structure</span><span class="plain">);</span>
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>taggings</span><span class="plain"> = </span><span class="identifier">NEW_LINKED_LIST</span><span class="plain">(</span><span class="reserved">paragraph_tagging</span><span class="plain">);</span>
|
|
|
|
<span class="identifier">P</span><span class="plain">-</span><span class="element">>under_section</span><span class="plain"> = </span><span class="identifier">S</span><span class="plain">;</span>
|
|
<span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_paragraphs</span><span class="plain">++;</span>
|
|
<span class="identifier">ADD_TO_LINKED_LIST</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">paragraph</span><span class="plain">, </span><span class="identifier">S</span><span class="plain">-</span><span class="element">>paragraphs</span><span class="plain">);</span>
|
|
|
|
<span class="identifier">current_paragraph</span><span class="plain"> = </span><span class="identifier">P</span><span class="plain">;</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6_5_1_8">§1.1.6.5.1.8</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_7"></a><b>§1.1.6.7. </b>Finally, we're down to either commentary or code.
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">This is a line destined for commentary</span> <span class="cwebmacronumber">1.1.6.7</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">match_results</span><span class="plain"> </span><span class="identifier">mr</span><span class="plain"> = </span><span class="functiontext">Regexp::create_mr</span><span class="plain">();</span>
|
|
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Regexp::match</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">, </span><span class="identifier">L</span><span class="string">">> (%c+)"</span><span class="plain">)) {</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">SOURCE_DISPLAY_LCAT</span><span class="plain">;</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>text_operand</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">mr</span><span class="element">.exp</span><span class="plain">[0]);</span>
|
|
<span class="plain">}</span>
|
|
<span class="functiontext">Regexp::dispose_of</span><span class="plain">(&</span><span class="identifier">mr</span><span class="plain">);</span>
|
|
</pre>
|
|
|
|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
|
|
|
|
<p class="inwebparagraph"><a id="SP1_1_6_8"></a><b>§1.1.6.8. </b>Note that in an <code class="display"><span class="extract">@d</span></code> definition, a blank line is treated as the end of the
|
|
definition. (This is unnecessary for C, and is a point of difference with
|
|
CWEB, but is needed for languages which don't allow multi-line definitions.)
|
|
</p>
|
|
|
|
|
|
<p class="macrodefinition"><code class="display">
|
|
<<span class="cwebmacrodefn">This is a line destined for the verbatim code</span> <span class="cwebmacronumber">1.1.6.8</span>> =
|
|
</code></p>
|
|
|
|
|
|
<pre class="displaydefn">
|
|
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> != </span><span class="constant">BEGIN_DEFINITION_LCAT</span><span class="plain">) && (</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> != </span><span class="constant">COMMAND_LCAT</span><span class="plain">))</span>
|
|
<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="identifier">code_lcat_for_body</span><span class="plain">;</span>
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<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> == </span><span class="constant">CONT_DEFINITION_LCAT</span><span class="plain">) && (</span><span class="functiontext">Regexp::string_is_white_space</span><span class="plain">(</span><span class="identifier">L</span><span class="plain">-</span><span class="element">>text</span><span class="plain">))) {</span>
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<span class="identifier">L</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">COMMENT_BODY_LCAT</span><span class="plain">;</span>
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<span class="identifier">L</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
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<span class="identifier">code_lcat_for_body</span><span class="plain"> = </span><span class="constant">COMMENT_BODY_LCAT</span><span class="plain">;</span>
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<span class="identifier">comment_mode</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
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<span class="plain">}</span>
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<span class="functiontext">Languages::subcategorise_line</span><span class="plain">(</span><span class="identifier">S</span><span class="plain">-</span><span class="element">>sect_language</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
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</pre>
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<p class="inwebparagraph"></p>
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<p class="endnote">This code is used in <a href="#SP1_1_6">§1.1.6</a>.</p>
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<p class="inwebparagraph"><a id="SP2"></a><b>§2. </b>The purpose text occurs just below the heading. In version 1 it's cued with
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a <code class="display"><span class="extract">@Purpose:</span></code> command; in version 2 it is unmarked. The following routine
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is not elegant but handles the back end of both possibilities.
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</p>
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<pre class="display">
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<span class="reserved">text_stream</span><span class="plain"> *</span><span class="functiontext">Parser::extract_purpose</span><span class="plain">(</span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">prologue</span><span class="plain">, </span><span class="reserved">source_line</span><span class="plain"> *</span><span class="identifier">XL</span><span class="plain">, </span><span class="reserved">section</span><span class="plain"> *</span><span class="identifier">S</span><span class="plain">, </span><span class="reserved">source_line</span><span class="plain"> **</span><span class="identifier">adjust</span><span class="plain">) {</span>
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<span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = </span><span class="functiontext">Str::duplicate</span><span class="plain">(</span><span class="identifier">prologue</span><span class="plain">);</span>
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<span class="reserved">while</span><span class="plain"> ((</span><span class="identifier">XL</span><span class="plain">) && (</span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">) && (</span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>owning_section</span><span class="plain"> == </span><span class="identifier">S</span><span class="plain">) &&</span>
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<span class="plain">(((</span><span class="identifier">adjust</span><span class="plain">) && (</span><span class="identifier">isalnum</span><span class="plain">(</span><span class="functiontext">Str::get_first_char</span><span class="plain">(</span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>text</span><span class="plain">)))) ||</span>
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<span class="plain">((!</span><span class="identifier">adjust</span><span class="plain">) && (</span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> == </span><span class="constant">COMMENT_BODY_LCAT</span><span class="plain">)))) {</span>
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<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="string">" %S"</span><span class="plain">, </span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>text</span><span class="plain">);</span>
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|
<span class="identifier">XL</span><span class="plain">-</span><span class="element">>category</span><span class="plain"> = </span><span class="constant">PURPOSE_BODY_LCAT</span><span class="plain">;</span>
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<span class="identifier">XL</span><span class="plain">-</span><span class="element">>is_commentary</span><span class="plain"> = </span><span class="constant">TRUE</span><span class="plain">;</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">adjust</span><span class="plain">) *</span><span class="identifier">adjust</span><span class="plain"> = </span><span class="identifier">XL</span><span class="plain">;</span>
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<span class="identifier">XL</span><span class="plain"> = </span><span class="identifier">XL</span><span class="plain">-</span><span class="element">>next_line</span><span class="plain">;</span>
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<span class="plain">}</span>
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<span class="functiontext">Str::trim_white_space</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">);</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">P</span><span class="plain">;</span>
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|
<span class="plain">}</span>
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|
</pre>
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|
<p class="inwebparagraph"></p>
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<p class="endnote">The function Parser::extract_purpose is used in <a href="#SP1_1_4">§1.1.4</a>, <a href="#SP1_1_6_5_1_1">§1.1.6.5.1.1</a>.</p>
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<p class="inwebparagraph"><a id="SP3"></a><b>§3. Version errors. </b>These are not fatal (why should they be?): Inweb carries on and allows the use
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|
of the feature despite the version mismatch. They nevertheless count as errors
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|
when it comes to Inweb's exit code, so they will halt a make.
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</p>
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|
|
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<pre class="display">
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|
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Parser::wrong_version</span><span class="plain">(</span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">using</span><span class="plain">, </span><span class="reserved">source_line</span><span class="plain"> *</span><span class="identifier">L</span><span class="plain">, </span><span class="reserved">char</span><span class="plain"> *</span><span class="identifier">feature</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">need</span><span class="plain">) {</span>
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|
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">warning</span><span class="plain">);</span>
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|
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">warning</span><span class="plain">, </span><span class="string">"%s is a feature available only in version %d syntax (you're using version %d)"</span><span class="plain">,</span>
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|
<span class="identifier">feature</span><span class="plain">, </span><span class="identifier">need</span><span class="plain">, </span><span class="identifier">using</span><span class="plain">);</span>
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|
<span class="functiontext">Main::error_in_web</span><span class="plain">(</span><span class="identifier">warning</span><span class="plain">, </span><span class="identifier">L</span><span class="plain">);</span>
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|
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">warning</span><span class="plain">);</span>
|
|
<span class="plain">}</span>
|
|
</pre>
|
|
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|
<p class="inwebparagraph"></p>
|
|
|
|
<p class="endnote">The function Parser::wrong_version is used in <a href="#SP1_1_1">§1.1.1</a>, <a href="#SP1_1_5">§1.1.5</a>, <a href="#SP1_1_6">§1.1.6</a>, <a href="#SP1_1_6_3">§1.1.6.3</a>, <a href="#SP1_1_6_5_1">§1.1.6.5.1</a>, <a href="#SP1_1_6_5_1_1">§1.1.6.5.1.1</a>, <a href="#SP1_1_6_5_1_2">§1.1.6.5.1.2</a>, <a href="#SP1_1_6_5_1_3">§1.1.6.5.1.3</a>, <a href="#SP1_1_6_5_1_4">§1.1.6.5.1.4</a>, <a href="#SP1_1_6_5_1_5">§1.1.6.5.1.5</a>, 3/tw (<a href="3-tw.html#SP1_3_3_1_2_1">§1.3.3.1.2.1</a>).</p>
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