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<title>P/pas</title>
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<!--Weave of '1/bsc' generated by 7-->
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<ul class="crumbs"><li><a href="../webs.html">★</a></li><li><a href="index.html">inter 1</a></li><li><a href="index.html#1">Chapter 1: Everything</a></li><li><b>Basics</b></li></ul><p class="purpose">Some fundamental definitions.</p>
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<ul class="toc"><li><a href="#SP1">§1. Build identity</a></li><li><a href="#SP6">§6. Setting up the memory manager</a></li></ul><hr class="tocbar">
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<p class="inwebparagraph"><a id="SP1"></a><b>§1. Build identity. </b>First we define the build, using a notation which tangles out to the current
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build number as specified in the contents section of this web.
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</p>
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<pre class="definitions">
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<span class="definitionkeyword">define</span> <span class="constant">INTOOL_NAME</span><span class="plain"> </span><span class="string">"inter"</span>
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<span class="definitionkeyword">define</span> <span class="constant">INTER_BUILD</span><span class="plain"> </span><span class="string">"inter [[Build Number]]"</span>
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</pre>
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<p class="inwebparagraph"><a id="SP2"></a><b>§2. </b>Since we want to include the words module, we have to define the following
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structure and initialiser:
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</p>
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<pre class="definitions">
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<span class="definitionkeyword">define</span> <span class="constant">VOCABULARY_MEANING_INITIALISER</span><span class="plain"> </span><span class="functiontext">Basics::ignore</span>
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</pre>
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<pre class="display">
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<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">struct</span><span class="plain"> </span><span class="reserved">vocabulary_meaning</span><span class="plain"> {</span>
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<span class="reserved">int</span><span class="plain"> </span><span class="identifier">enigmatic_number</span><span class="plain">;</span>
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<span class="plain">} </span><span class="reserved">vocabulary_meaning</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">The structure vocabulary_meaning is private to this section.</p>
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<p class="inwebparagraph"><a id="SP3"></a><b>§3. </b></p>
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<pre class="definitions">
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<span class="definitionkeyword">define</span> <span class="constant">LEXER_PROBLEM_HANDLER</span><span class="plain"> </span><span class="functiontext">Basics::lexer_problem_handler</span>
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</pre>
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<pre class="display">
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<span class="reserved">vocabulary_meaning</span><span class="plain"> </span><span class="functiontext">Basics::ignore</span><span class="plain">(</span><span class="reserved">vocabulary_entry</span><span class="plain"> *</span><span class="identifier">ve</span><span class="plain">) {</span>
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<span class="reserved">vocabulary_meaning</span><span class="plain"> </span><span class="identifier">vm</span><span class="plain">;</span>
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<span class="identifier">vm</span><span class="element">.enigmatic_number</span><span class="plain"> = 16339;</span>
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<span class="reserved">return</span><span class="plain"> </span><span class="identifier">vm</span><span class="plain">;</span>
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<span class="plain">}</span>
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<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Basics::lexer_problem_handler</span><span class="plain">(</span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">err</span><span class="plain">, </span><span class="reserved">text_stream</span><span class="plain"> *</span><span class="identifier">problem_source_description</span><span class="plain">, </span><span class="identifier">wchar_t</span><span class="plain"> *</span><span class="identifier">word</span><span class="plain">) {</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">err</span><span class="plain"> == </span><span class="constant">MEMORY_OUT_LEXERERROR</span><span class="plain">)</span>
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<span class="functiontext">Errors::fatal</span><span class="plain">(</span><span class="string">"Out of memory: unable to create lexer workspace"</span><span class="plain">);</span>
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<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">word_t</span><span class="plain">);</span>
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<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">word</span><span class="plain">) </span><span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">word_t</span><span class="plain">, </span><span class="string">"%w"</span><span class="plain">, </span><span class="identifier">word</span><span class="plain">);</span>
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<span class="reserved">switch</span><span class="plain"> (</span><span class="identifier">err</span><span class="plain">) {</span>
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<span class="reserved">case</span><span class="plain"> </span><span class="constant">STRING_TOO_LONG_LEXERERROR</span><span class="plain">:</span>
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<span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"Too much text in quotation marks: %S"</span><span class="plain">, </span><span class="identifier">word_t</span><span class="plain">);</span>
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<span class="reserved">break</span><span class="plain">;</span>
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<span class="reserved">case</span><span class="plain"> </span><span class="constant">WORD_TOO_LONG_LEXERERROR</span><span class="plain">:</span>
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<span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"Word too long: %S"</span><span class="plain">, </span><span class="identifier">word_t</span><span class="plain">);</span>
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<span class="reserved">break</span><span class="plain">;</span>
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<span class="reserved">case</span><span class="plain"> </span><span class="constant">I6_TOO_LONG_LEXERERROR</span><span class="plain">:</span>
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<span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"I6 inclusion too long: %S"</span><span class="plain">, </span><span class="identifier">word_t</span><span class="plain">);</span>
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<span class="reserved">break</span><span class="plain">;</span>
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<span class="reserved">case</span><span class="plain"> </span><span class="constant">STRING_NEVER_ENDS_LEXERERROR</span><span class="plain">:</span>
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<span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"Quoted text never ends: %S"</span><span class="plain">, </span><span class="identifier">problem_source_description</span><span class="plain">);</span>
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<span class="reserved">break</span><span class="plain">;</span>
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<span class="reserved">case</span><span class="plain"> </span><span class="constant">COMMENT_NEVER_ENDS_LEXERERROR</span><span class="plain">:</span>
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<span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"Square-bracketed text never ends: %S"</span><span class="plain">, </span><span class="identifier">problem_source_description</span><span class="plain">);</span>
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<span class="reserved">break</span><span class="plain">;</span>
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<span class="reserved">case</span><span class="plain"> </span><span class="constant">I6_NEVER_ENDS_LEXERERROR</span><span class="plain">:</span>
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<span class="functiontext">Errors::with_text</span><span class="plain">(</span><span class="string">"I6 inclusion text never ends: %S"</span><span class="plain">, </span><span class="identifier">problem_source_description</span><span class="plain">);</span>
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<span class="reserved">break</span><span class="plain">;</span>
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<span class="reserved">default</span><span class="plain">:</span>
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<span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"unknown lexer error"</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">word_t</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 Basics::ignore appears nowhere else.</p>
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<p class="endnote">The function Basics::lexer_problem_handler appears nowhere else.</p>
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<p class="inwebparagraph"><a id="SP4"></a><b>§4. </b></p>
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<pre class="display">
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<span class="reserved">typedef</span><span class="plain"> </span><span class="reserved">void</span><span class="plain"> </span><span class="identifier">kind</span><span class="plain">;</span>
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<span class="identifier">kind</span><span class="plain"> *</span><span class="identifier">K_value</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="inwebparagraph"><a id="SP5"></a><b>§5. </b></p>
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<pre class="definitions">
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<span class="definitionkeyword">define</span> <span class="constant">PREFORM_LANGUAGE_TYPE</span><span class="plain"> </span><span class="reserved">void</span>
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</pre>
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<p class="inwebparagraph"><a id="SP6"></a><b>§6. Setting up the memory manager. </b>We need to itemise the structures we'll want to allocate:
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</p>
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<pre class="definitions">
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<span class="definitionkeyword">enum</span> <span class="constant">inter_file_MT</span>
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</pre>
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<p class="inwebparagraph"><a id="SP7"></a><b>§7. </b>And then expand:
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</p>
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<pre class="display">
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<span class="identifier">ALLOCATE_INDIVIDUALLY</span><span class="plain">(</span><span class="reserved">inter_file</span><span class="plain">)</span>
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</pre>
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<p class="inwebparagraph"></p>
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<hr class="tocbar">
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<ul class="toc"><li><i>(This section begins Chapter 1: Everything.)</i></li><li><a href="1-mn.html">Continue with 'Main'</a></li></ul><hr class="tocbar">
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