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Graham Nelson ab4646111b Made inter_symbol somewhat leaner
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<!--Weave of '4/tpc6' 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 Permission Construct</b></li></ul><p class="purpose">Defining the permission 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">PERMISSION_IST</span>
</pre>
<pre class="display">
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Permission::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">PERMISSION_IST</span><span class="plain">,</span>
<span class="identifier">L</span><span class="string">"permission (%i+) (%i+) *(%i*)"</span><span class="plain">,</span>
<span class="identifier">I</span><span class="string">"permission"</span><span class="plain">, </span><span class="identifier">I</span><span class="string">"permissions"</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::Permission::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::Permission::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::Permission::write</span><span class="plain">);</span>
<span class="plain">}</span>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inter::Permission::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_PERM_IFLD</span><span class="plain"> 2</span>
<span class="definitionkeyword">define</span> <span class="constant">PROP_PERM_IFLD</span><span class="plain"> 3</span>
<span class="definitionkeyword">define</span> <span class="constant">OWNER_PERM_IFLD</span><span class="plain"> 4</span>
<span class="definitionkeyword">define</span> <span class="constant">STORAGE_PERM_IFLD</span><span class="plain"> 5</span>
<span class="definitionkeyword">define</span> <span class="constant">EXTENT_PERM_IFR</span><span class="plain"> 6</span>
</pre>
<pre class="display">
<span class="reserved">int</span><span class="plain"> </span><span class="identifier">pp_counter</span><span class="plain"> = 1;</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Permission::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">PERMISSION_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">prop_name</span><span class="plain"> = </span><span class="functiontext">Inter::Textual::find_symbol</span><span class="plain">(</span><span class="functiontext">Inter::Bookmarks::tree</span><span class="plain">(</span><span class="identifier">IBM</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="constant">PROPERTY_IST</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">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">owner_name</span><span class="plain"> = </span><span class="functiontext">Inter::Textual::find_KOI</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">[1], </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::Kind::is</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">)) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Inter::Types::is_enumerated</span><span class="plain">(</span><span class="functiontext">Inter::Kind::data_type</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">)) == </span><span class="identifier">FALSE</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">"not a kind which can have property values"</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">eloc</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="reserved">inter_node_list</span><span class="plain"> *</span><span class="identifier">FL</span><span class="plain"> =</span>
<span class="functiontext">Inter::Warehouse::get_frame_list</span><span class="plain">(</span>
<span class="functiontext">Inter::Bookmarks::warehouse</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">),</span>
<span class="functiontext">Inter::Kind::permissions_list</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">));</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">FL</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"no permissions list"</span><span class="plain">);</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">X</span><span class="plain">;</span>
<span class="identifier">LOOP_THROUGH_INTER_NODE_LIST</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="identifier">FL</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prop_allowed</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_frame_data</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="constant">PROP_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prop_allowed</span><span class="plain"> == </span><span class="identifier">prop_name</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">"permission already given"</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">eloc</span><span class="plain">); </span><span class="reserved">return</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">inter_node_list</span><span class="plain"> *</span><span class="identifier">FL</span><span class="plain"> =</span>
<span class="functiontext">Inter::Warehouse::get_frame_list</span><span class="plain">(</span>
<span class="functiontext">Inter::Bookmarks::warehouse</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">),</span>
<span class="functiontext">Inter::Instance::permissions_list</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">));</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">FL</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"no permissions list"</span><span class="plain">);</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">X</span><span class="plain">;</span>
<span class="identifier">LOOP_THROUGH_INTER_NODE_LIST</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="identifier">FL</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prop_allowed</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_frame_data</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="constant">PROP_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prop_allowed</span><span class="plain"> == </span><span class="identifier">prop_name</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">"permission already given"</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">eloc</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="plain">}</span>
<span class="plain">}</span>
<span class="identifier">TEMPORARY_TEXT</span><span class="plain">(</span><span class="identifier">ident</span><span class="plain">);</span>
<span class="identifier">WRITE_TO</span><span class="plain">(</span><span class="identifier">ident</span><span class="plain">, </span><span class="string">"pp_auto_%d"</span><span class="plain">, </span><span class="identifier">pp_counter</span><span class="plain">++);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">pp_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">ident</span><span class="plain">, </span><span class="identifier">E</span><span class="plain">);</span>
<span class="identifier">DISCARD_TEXT</span><span class="plain">(</span><span class="identifier">ident</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">store</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::len</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]) &gt; 0) {</span>
<span class="identifier">store</span><span class="plain"> = </span><span class="functiontext">Inter::Textual::find_symbol</span><span class="plain">(</span><span class="functiontext">Inter::Bookmarks::tree</span><span class="plain">(</span><span class="identifier">IBM</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">[2], </span><span class="constant">CONSTANT_IST</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">E</span><span class="plain">) </span><span class="reserved">return</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Permission::new</span><span class="plain">(</span><span class="identifier">IBM</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">prop_name</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">owner_name</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">pp_name</span><span class="plain">), (</span><span class="identifier">store</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">store</span><span class="plain">)):0, (</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">eloc</span><span class="plain">);</span>
<span class="plain">}</span>
<span class="reserved">inter_error_message</span><span class="plain"> *</span><span class="functiontext">Inter::Permission::new</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="constant">inter_t</span><span class="plain"> </span><span class="identifier">PID</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">KID</span><span class="plain">,</span>
<span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">PPID</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">SID</span><span class="plain">, </span><span class="constant">inter_t</span><span class="plain"> </span><span class="identifier">level</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_tree_node</span><span class="plain"> *</span><span class="identifier">P</span><span class="plain"> = </span><span class="functiontext">Inter::Node::fill_4</span><span class="plain">(</span><span class="identifier">IBM</span><span class="plain">, </span><span class="constant">PERMISSION_IST</span><span class="plain">, </span><span class="identifier">PPID</span><span class="plain">, </span><span class="identifier">PID</span><span class="plain">, </span><span class="identifier">KID</span><span class="plain">, </span><span class="identifier">SID</span><span class="plain">, </span><span class="identifier">eloc</span><span class="plain">, </span><span class="identifier">level</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="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">P</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="identifier">E</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">P</span><span class="plain">);</span>
<span class="reserved">return</span><span class="plain"> </span><span class="identifier">NULL</span><span class="plain">;</span>
<span class="plain">}</span>
<span class="reserved">void</span><span class="plain"> </span><span class="functiontext">Inter::Permission::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="constant">inter_t</span><span class="plain"> </span><span class="identifier">vcount</span><span class="plain"> = </span><span class="functiontext">Inter::Node::vcount</span><span class="plain">(</span><span class="identifier">P</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"> != </span><span class="constant">EXTENT_PERM_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">"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_PERM_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="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Verify::symbol</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="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="constant">PROP_PERM_IFLD</span><span class="plain">], </span><span class="constant">PROPERTY_IST</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="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Verify::symbol_KOI</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="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="constant">OWNER_PERM_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">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="constant">STORAGE_PERM_IFLD</span><span class="plain">]) {</span>
<span class="plain">*</span><span class="identifier">E</span><span class="plain"> = </span><span class="functiontext">Inter::Verify::symbol</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="identifier">P</span><span class="plain">-</span><span class="element">&gt;W.data</span><span class="plain">[</span><span class="constant">STORAGE_PERM_IFLD</span><span class="plain">], </span><span class="constant">CONSTANT_IST</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="plain">}</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prop_name</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_id</span><span class="plain">(</span><span class="functiontext">Inter::Packages::scope</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="element">&gt;W.data</span><span class="plain">[</span><span class="constant">PROP_PERM_IFLD</span><span class="plain">]);;</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">owner_name</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_id</span><span class="plain">(</span><span class="functiontext">Inter::Packages::scope</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="element">&gt;W.data</span><span class="plain">[</span><span class="constant">OWNER_PERM_IFLD</span><span class="plain">]);;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">vcount</span><span class="plain"> == 0) {</span>
<span class="reserved">inter_node_list</span><span class="plain"> *</span><span class="identifier">FL</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="functiontext">Inter::Kind::is</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">)) {</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="functiontext">Inter::Types::is_enumerated</span><span class="plain">(</span><span class="functiontext">Inter::Kind::data_type</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">)) == </span><span class="identifier">FALSE</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">"property permission for non-enumerated kind"</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="identifier">FL</span><span class="plain"> = </span><span class="functiontext">Inter::Node::ID_to_frame_list</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="functiontext">Inter::Kind::permissions_list</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">));</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">FL</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"no permissions list"</span><span class="plain">);</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">X</span><span class="plain">;</span>
<span class="identifier">LOOP_THROUGH_INTER_NODE_LIST</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="identifier">FL</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prop_X</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_frame_data</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="constant">PROP_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prop_P</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_id</span><span class="plain">(</span><span class="functiontext">Inter::Packages::scope</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="element">&gt;W.data</span><span class="plain">[</span><span class="constant">PROP_PERM_IFLD</span><span class="plain">]);;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prop_X</span><span class="plain"> == </span><span class="identifier">prop_P</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">"duplicate permission"</span><span class="plain">, </span><span class="identifier">prop_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</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">owner_X</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_frame_data</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="constant">OWNER_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">owner_P</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_id</span><span class="plain">(</span><span class="functiontext">Inter::Packages::scope</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="element">&gt;W.data</span><span class="plain">[</span><span class="constant">OWNER_PERM_IFLD</span><span class="plain">]);;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">owner_X</span><span class="plain"> != </span><span class="identifier">owner_P</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">"kind permission list malformed"</span><span class="plain">, </span><span class="identifier">owner_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="plain">}</span>
<span class="plain">} </span><span class="reserved">else</span><span class="plain"> {</span>
<span class="identifier">FL</span><span class="plain"> = </span><span class="functiontext">Inter::Node::ID_to_frame_list</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="functiontext">Inter::Instance::permissions_list</span><span class="plain">(</span><span class="identifier">owner_name</span><span class="plain">));</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">FL</span><span class="plain"> == </span><span class="identifier">NULL</span><span class="plain">) </span><span class="identifier">internal_error</span><span class="plain">(</span><span class="string">"no permissions list"</span><span class="plain">);</span>
<span class="reserved">inter_tree_node</span><span class="plain"> *</span><span class="identifier">X</span><span class="plain">;</span>
<span class="identifier">LOOP_THROUGH_INTER_NODE_LIST</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="identifier">FL</span><span class="plain">) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prop_X</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_frame_data</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="constant">PROP_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">prop_P</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_id</span><span class="plain">(</span><span class="functiontext">Inter::Packages::scope</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="element">&gt;W.data</span><span class="plain">[</span><span class="constant">PROP_PERM_IFLD</span><span class="plain">]);;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">prop_X</span><span class="plain"> == </span><span class="identifier">prop_P</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">"duplicate permission"</span><span class="plain">, </span><span class="identifier">prop_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</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">owner_X</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_frame_data</span><span class="plain">(</span><span class="identifier">X</span><span class="plain">, </span><span class="constant">OWNER_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">owner_P</span><span class="plain"> = </span><span class="functiontext">Inter::SymbolsTables::symbol_from_id</span><span class="plain">(</span><span class="functiontext">Inter::Packages::scope</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="element">&gt;W.data</span><span class="plain">[</span><span class="constant">OWNER_PERM_IFLD</span><span class="plain">]);;</span>
<span class="reserved">if</span><span class="plain"> (</span><span class="identifier">owner_X</span><span class="plain"> != </span><span class="identifier">owner_P</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">"instance permission list malformed"</span><span class="plain">, </span><span class="identifier">owner_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</span><span class="plain">); </span><span class="reserved">return</span><span class="plain">; }</span>
<span class="plain">}</span>
<span class="plain">}</span>
<span class="functiontext">Inter::Lists::add</span><span class="plain">(</span><span class="identifier">FL</span><span class="plain">, </span><span class="identifier">P</span><span class="plain">);</span>
<span class="identifier">FL</span><span class="plain"> = </span><span class="functiontext">Inter::Node::ID_to_frame_list</span><span class="plain">(</span><span class="identifier">P</span><span class="plain">, </span><span class="functiontext">Inter::Property::permissions_list</span><span class="plain">(</span><span class="identifier">prop_name</span><span class="plain">));</span>
<span class="functiontext">Inter::Lists::add</span><span class="plain">(</span><span class="identifier">FL</span><span class="plain">, </span><span class="identifier">P</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::Permission::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">prop_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">PROP_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">owner_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">OWNER_PERM_IFLD</span><span class="plain">);</span>
<span class="reserved">if</span><span class="plain"> ((</span><span class="identifier">prop_name</span><span class="plain">) &amp;&amp; (</span><span class="identifier">owner_name</span><span class="plain">)) {</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">"permission %S %S"</span><span class="plain">, </span><span class="identifier">prop_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</span><span class="plain">, </span><span class="identifier">owner_name</span><span class="plain">-</span><span class="element">&gt;symbol_name</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="constant">STORAGE_PERM_IFLD</span><span class="plain">]) {</span>
<span class="reserved">inter_symbol</span><span class="plain"> *</span><span class="identifier">store</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">STORAGE_PERM_IFLD</span><span class="plain">);</span>
<span class="identifier">WRITE</span><span class="plain">(</span><span class="string">" %S"</span><span class="plain">, </span><span class="identifier">store</span><span class="plain">-</span><span class="element">&gt;symbol_name</span><span class="plain">);</span>
<span class="plain">}</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 permission"</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>
</pre>
<p class="inwebparagraph"></p>
<p class="endnote">The function Inter::Permission::read is used in <a href="#SP1">&#167;1</a>.</p>
<p class="endnote">The function Inter::Permission::new appears nowhere else.</p>
<p class="endnote">The function Inter::Permission::verify is used in <a href="#SP1">&#167;1</a>.</p>
<p class="endnote">The function Inter::Permission::write is used in <a href="#SP1">&#167;1</a>.</p>
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