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Graham Nelson ab4646111b Made inter_symbol somewhat leaner
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<!--Weave of '4/tpc7' generated by 7-->
<ul class="crumbs"><li><a href="../webs.html">&#9733;</a></li><li><a href="index.html">inter</a></li><li><a href="index.html#4">Chapter 4: Void Constructs</a></li><li><b>The Primitive Construct</b></li></ul><p class="purpose">Defining the primitive construct.</p>
<p class="inwebparagraph"><a id="SP1"></a><b>&#167;1. </b></p>
<pre class="definitions">
<span class="definitionkeyword">enum</span> <span class="constant">PRIMITIVE_IST</span>
</pre>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::define</span><span class="plain">(</span><span class="reserved">void</span><span class="plain">) {</span>
<span class="reserved">inter_construct</span><span class="plain"> *</span><span class="identifier">IC</span><span class="plain"> = </span><span class="functiontext">Inter::Defn::create_construct</span><span class="plain">(</span>
<span class="constant">PRIMITIVE_IST</span><span class="plain">,</span>
<span class="identifier">L</span><span class="string">"primitive (!%i+) (%c+) -&gt; (%C+)"</span><span class="plain">,</span>
<span class="identifier">I</span><span class="string">"primitive"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"primitives"</span><span class="plain">);</span>
<span class="identifier">IC</span><span class="plain">-</span><span class="element">&gt;usage_permissions</span><span class="plain"> = </span><span class="constant">OUTSIDE_OF_PACKAGES</span><span class="plain">;</span>
<span class="identifier">METHOD_ADD</span><span class="plain">(</span><span class="identifier">IC</span><span class="plain">, </span><span class="constant">CONSTRUCT_READ_MTID</span><span class="plain">, </span><span class="functiontext">Inter::Primitive::read</span><span class="plain">);</span>
<span class="identifier">METHOD_ADD</span><span class="plain">(</span><span class="identifier">IC</span><span class="plain">, </span><span class="constant">CONSTRUCT_VERIFY_MTID</span><span class="plain">, </span><span class="functiontext">Inter::Primitive::verify</span><span class="plain">);</span>
<span class="identifier">METHOD_ADD</span><span class="plain">(</span><span class="identifier">IC</span><span class="plain">, </span><span class="constant">CONSTRUCT_WRITE_MTID</span><span class="plain">, </span><span class="functiontext">Inter::Primitive::write</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inter::Primitive::define is used in 3/dfn (<a href="3-dfn.html#SP3">&#167;3</a>).</p>
<p class="inwebparagraph"><a id="SP2"></a><b>&#167;2. </b></p>
<pre class="definitions">
<span class="definitionkeyword">define</span> <span class="constant">DEFN_PRIM_IFLD</span><span class="plain"> 2</span>
<span class="definitionkeyword">define</span> <span class="constant">CAT_PRIM_IFLD</span><span class="plain"> 3</span>
<span class="definitionkeyword">define</span> <span class="constant">MIN_EXTENT_PRIM_IFR</span><span class="plain"> 4</span>
<span class="definitionkeyword">define</span> <span class="constant">VAL_PRIM_CAT</span><span class="plain"> 1</span>
<span class="definitionkeyword">define</span> <span class="constant">REF_PRIM_CAT</span><span class="plain"> 2</span>
<span class="definitionkeyword">define</span> <span class="constant">LAB_PRIM_CAT</span><span class="plain"> 3</span>
<span class="definitionkeyword">define</span> <span class="constant">CODE_PRIM_CAT</span><span class="plain"> 4</span>
</pre>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::read</span><span class="plain">(</span><span class="reserved">inter_construct</span><span class="plain"> *</span><span class="identifier">IC</span><span class="plain">, </span><span class="reserved">inter_bookmark</span><span class="plain"> *</span><span class="identifier">IBM</span><span class="plain">, </span><span class="reserved">inter_line_parse</span><span class="plain"> *</span><span class="identifier">ilp</span><span class="plain">, </span><span class="reserved">inter_error_location</span><span class="plain"> *</span><span class="identifier">eloc</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Defn::vet_level</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">, </span><span class="constant">PRIMITIVE_IST</span><span class="plain">, </span><span class="identifier">ilp</span><span class="plain">-</span><span class="element">&gt;indent_level</span><span class="plain">, </span><span class="identifier">eloc</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (*</span><span class="identifier">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Inter::Annotations::exist</span><span class="plain">(&amp;(</span><span class="identifier">ilp</span><span class="plain">-</span><span class="element">&gt;set</span><span class="plain">))) { *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Errors::plain</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"__annotations are not allowed"</span><span class="plain">, </span><span class="identifier">eloc</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prim_name</span><span class="plain"> = </span><span class="functiontext">Inter::Textual::new_symbol</span><span class="plain">(</span><span class="identifier">eloc</span><span class="plain">, </span><span class="functiontext">Inter::Bookmarks::scope</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">), </span><span class="identifier">ilp</span><span class="plain">-</span><span class="element">&gt;mr</span><span class="plain">.</span><span class="identifier">exp</span><span class="plain">[0], </span><span class="identifier">E</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (*</span><span class="identifier">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">F</span><span class="plain"> = </span><span class="functiontext">Inter::Node::fill_1</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">, </span><span class="constant">PRIMITIVE_IST</span><span class="plain">, </span><span class="functiontext">Inter::SymbolsTables::id_from_IRS_and_symbol</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">, </span><span class="identifier">prim_name</span><span class="plain">), </span><span class="identifier">eloc</span><span class="plain">, (</span><span class="constant">inter_t</span><span class="plain">) </span><span class="identifier">ilp</span><span class="plain">-</span><span class="element">&gt;indent_level</span><span class="plain">);</span>
<span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">in</span><span class="plain"> = </span><span class="identifier">ilp</span><span class="plain">-</span><span class="element">&gt;mr</span><span class="plain">.</span><span class="identifier">exp</span><span class="plain">[1];</span>
<span class="identifier">match_results</span><span class="plain"> </span><span class="identifier">mr2</span><span class="plain"> = </span><span class="identifier">Regexp::create_mr</span><span class="plain">();</span>
<span class="reserved">while</span><span class="plain"> (</span><span class="identifier">Regexp::match</span><span class="plain">(&amp;</span><span class="identifier">mr2</span><span class="plain">, </span><span class="identifier">in</span><span class="plain">, </span><span class="identifier">L</span><span class="string">" *(%i+) *(%c*)"</span><span class="plain">)) {</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">lcat</span><span class="plain"> = </span><span class="functiontext">Inter::Primitive::category</span><span class="plain">(</span><span class="identifier">eloc</span><span class="plain">, </span><span class="identifier">mr2</span><span class="plain">.</span><span class="identifier">exp</span><span class="plain">[0], </span><span class="identifier">E</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (*</span><span class="identifier">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">lcat</span><span class="plain"> == 0) </span><span class="reserved">break</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Inter::Node::extend</span><span class="plain">(</span><span class="identifier">F</span><span class="plain">, (</span><span class="constant">inter_t</span><span class="plain">) 1) == </span><span class="identifier">FALSE</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"can't extend"</span><span class="plain">);</span>
<span class="identifier">F</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="identifier">F</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain"> - 1] = </span><span class="identifier">lcat</span><span class="plain">;</span>
<span class="identifier">Str::copy</span><span class="plain">(</span><span class="identifier">in</span><span class="plain">, </span><span class="identifier">mr2</span><span class="plain">.</span><span class="identifier">exp</span><span class="plain">[1]);</span>
<span class="plain">}</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">rcat</span><span class="plain"> = </span><span class="functiontext">Inter::Primitive::category</span><span class="plain">(</span><span class="identifier">eloc</span><span class="plain">, </span><span class="identifier">ilp</span><span class="plain">-</span><span class="element">&gt;mr</span><span class="plain">.</span><span class="identifier">exp</span><span class="plain">[2], </span><span class="identifier">E</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (*</span><span class="identifier">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Inter::Node::extend</span><span class="plain">(</span><span class="identifier">F</span><span class="plain">, (</span><span class="constant">inter_t</span><span class="plain">) 1) == </span><span class="identifier">FALSE</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"can't extend"</span><span class="plain">);</span>
<span class="identifier">F</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="identifier">F</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain"> - 1] = </span><span class="identifier">rcat</span><span class="plain">;</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Defn::verify_construct</span><span class="plain">(</span><span class="functiontext">Inter::Bookmarks::package</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">), </span><span class="identifier">F</span><span class="plain">); </span><span class="reserved">if</span><span class="plain"> (*</span><span class="identifier">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="functiontext">Inter::Bookmarks::insert</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">, </span><span class="identifier">F</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::category</span><span class="plain">(</span><span class="reserved">inter_error_location</span><span class="plain"> *</span><span class="identifier">eloc</span><span class="plain">, </span><span class="identifier">text_stream</span><span class="plain"> *</span><span class="identifier">T</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Str::eq</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"void"</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> 0;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Str::eq</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"val"</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="constant">VAL_PRIM_CAT</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Str::eq</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"ref"</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="constant">REF_PRIM_CAT</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Str::eq</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"lab"</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="constant">LAB_PRIM_CAT</span><span class="plain">;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">Str::eq</span><span class="plain">(</span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"code"</span><span class="plain">)) </span><span class="reserved">return</span><span class="plain"> </span><span class="constant">CODE_PRIM_CAT</span><span class="plain">;</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Errors::quoted</span><span class="plain">(</span><span class="identifier">I</span><span class="string">"no such category"</span><span class="plain">, </span><span class="identifier">T</span><span class="plain">, </span><span class="identifier">eloc</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="constant">VAL_PRIM_CAT</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::write_category</span><span class="plain">(</span><span class="identifier">OUTPUT_STREAM</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">cat</span><span class="plain">) {</span>
<span class="reserved">switch</span><span class="plain"> (</span><span class="identifier">cat</span><span class="plain">) {</span>
<span class="reserved">case</span><span class="plain"> </span><span class="constant">VAL_PRIM_CAT</span><span class="plain">: </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"val"</span><span class="plain">); </span><span class="reserved">break</span><span class="plain">;</span>
<span class="reserved">case</span><span class="plain"> </span><span class="constant">REF_PRIM_CAT</span><span class="plain">: </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"ref"</span><span class="plain">); </span><span class="reserved">break</span><span class="plain">;</span>
<span class="reserved">case</span><span class="plain"> </span><span class="constant">LAB_PRIM_CAT</span><span class="plain">: </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"lab"</span><span class="plain">); </span><span class="reserved">break</span><span class="plain">;</span>
<span class="reserved">case</span><span class="plain"> </span><span class="constant">CODE_PRIM_CAT</span><span class="plain">: </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"code"</span><span class="plain">); </span><span class="reserved">break</span><span class="plain">;</span>
<span class="reserved">case</span><span class="plain"> 0: </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"void"</span><span class="plain">); </span><span class="reserved">break</span><span class="plain">;</span>
<span class="reserved">default</span><span class="plain">: </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"bad category"</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::verify</span><span class="plain">(</span><span class="reserved">inter_construct</span><span class="plain"> *</span><span class="identifier">IC</span><span class="plain">, </span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">inter_package</span><span class="plain"> *</span><span class="identifier">owner</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain"> &lt; </span><span class="constant">MIN_EXTENT_PRIM_IFR</span><span class="plain">) { *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Node::error</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"primitive extent wrong"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Verify::defn</span><span class="plain">(</span><span class="identifier">owner</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">, </span><span class="constant">DEFN_PRIM_IFLD</span><span class="plain">); </span><span class="reserved">if</span><span class="plain"> (*</span><span class="identifier">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prim_name</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_id</span><span class="plain">(</span><span class="functiontext">Inter::Node::globals</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">), </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="constant">DEFN_PRIM_IFLD</span><span class="plain">]);</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prim_name</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) || (</span><span class="identifier">Str::get_first_char</span><span class="plain">(</span><span class="identifier">prim_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</span><span class="plain">) != </span><span class="character">'!'</span><span class="plain">))</span>
<span class="plain">{ *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Node::error</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"primitive not beginning with '!'"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">voids</span><span class="plain"> = 0, </span><span class="identifier">args</span><span class="plain"> = 0;</span>
<span class="reserved">for</span><span class="plain"> (</span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">i</span><span class="plain">=</span><span class="constant">CAT_PRIM_IFLD</span><span class="plain">; </span><span class="identifier">i</span><span class="plain">&lt;</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain">-1; </span><span class="identifier">i</span><span class="plain">++) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="identifier">i</span><span class="plain">] == 0) </span><span class="identifier">voids</span><span class="plain">++;</span>
<span class="identifier">args</span><span class="plain">++;</span>
<span class="plain">}</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">voids</span><span class="plain"> &gt; 1) || ((</span><span class="identifier">voids</span><span class="plain"> == 1) &amp;&amp; (</span><span class="identifier">args</span><span class="plain"> &gt; 1)))</span>
<span class="plain">{ *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Node::error</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"if used on the left, 'void' must be the only argument"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::write</span><span class="plain">(</span><span class="reserved">inter_construct</span><span class="plain"> *</span><span class="identifier">IC</span><span class="plain">, </span><span class="identifier">OUTPUT_STREAM</span><span class="plain">, </span><span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain">, </span><span class="reserved">inter_error_message</span><span class="plain"> **</span><span class="identifier">E</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prim_name</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_frame_data</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="constant">DEFN_PRIM_IFLD</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prim_name</span><span class="plain">) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"primitive %S"</span><span class="plain">, </span><span class="identifier">prim_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</span><span class="plain">);</span>
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">cats</span><span class="plain"> = 0;</span>
<span class="reserved">for</span><span class="plain"> (</span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">i</span><span class="plain">=</span><span class="constant">CAT_PRIM_IFLD</span><span class="plain">; </span><span class="identifier">i</span><span class="plain">&lt;</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain">-1; </span><span class="identifier">i</span><span class="plain">++) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" "</span><span class="plain">);</span>
<span class="functiontext">Inter::Primitive::write_category</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="identifier">i</span><span class="plain">]);</span>
<span class="identifier">cats</span><span class="plain">++;</span>
<span class="plain">}</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">cats</span><span class="plain"> == 0) </span><span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" void"</span><span class="plain">);</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" -&gt; "</span><span class="plain">);</span>
<span class="functiontext">Inter::Primitive::write_category</span><span class="plain">(</span><span class="identifier">OUT</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain">-1]);</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> { *</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Node::error</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"cannot write primitive"</span><span class="plain">, </span><span class="identifier">NULL</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="plain">}</span>
<span class="reserved">int</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::arity</span><span class="plain">(</span><span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prim</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prim</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> 0;</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext">Inter::Symbols::definition</span><span class="plain">(</span><span class="identifier">prim</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> 0;</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">D</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain"> - </span><span class="constant">CAT_PRIM_IFLD</span><span class="plain"> - 1;</span>
<span class="plain">}</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::operand_category</span><span class="plain">(</span><span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prim</span><span class="plain">, </span><span class="reserved">int</span><span class="plain"> </span><span class="identifier">i</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prim</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> 0;</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext">Inter::Symbols::definition</span><span class="plain">(</span><span class="identifier">prim</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> 0;</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">D</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="constant">CAT_PRIM_IFLD</span><span class="plain"> + </span><span class="identifier">i</span><span class="plain">];</span>
<span class="plain">}</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="functiontext">Inter::Primitive::result_category</span><span class="plain">(</span><span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prim</span><span class="plain">) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prim</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> 0;</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">D</span><span class="plain"> = </span><span class="functiontext">Inter::Symbols::definition</span><span class="plain">(</span><span class="identifier">prim</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">D</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="reserved">return</span><span class="plain"> 0;</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">D</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="identifier">D</span><span class="plain">-</span><span class="element">&gt;W.extent</span><span class="plain"> - 1];</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inter::Primitive::read is used in <a href="#SP1">&#167;1</a>.</p>
<p class="endnote">The function Inter::Primitive::category appears nowhere else.</p>
<p class="endnote">The function Inter::Primitive::write_category appears nowhere else.</p>
<p class="endnote">The function Inter::Primitive::verify is used in <a href="#SP1">&#167;1</a>.</p>
<p class="endnote">The function Inter::Primitive::write is used in <a href="#SP1">&#167;1</a>.</p>
<p class="endnote">The function Inter::Primitive::arity is used in 5/tic (<a href="5-tic.html#SP2">&#167;2</a>).</p>
<p class="endnote">The function Inter::Primitive::operand_category is used in 5/tic (<a href="5-tic.html#SP2">&#167;2</a>).</p>
<p class="endnote">The function Inter::Primitive::result_category is used in 5/tic (<a href="5-tic.html#SP2">&#167;2</a>).</p>
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