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<ul><li><a href="../index.html">home</a></li>
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<!--Weave of 'Verifying Inter' generated by Inweb-->
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<div class="breadcrumbs">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../intern.html">Inter Modules</a></li><li><a href="index.html">bytecode</a></li><li><a href="index.html#3">Chapter 3: Their Instructions</a></li><li><b>Verifying Inter</b></li></ul></div>
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<p class="purpose">Verifying that a new Inter instruction is correct and consistent.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>Each time a new instruction is created within <a href="../inter/index.html" class="internal">inter</a>, or loaded in
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from a binary Inter file, it is "verified". We use a flag in the preframe for
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the instruction to ensure that it is verified only once, for the sake both of
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speed and to ensure that certain one-time-only operations are indeed done
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one time only.
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</p>
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<p class="commentary">As this implies, "verification" is not quite the passive business which the
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name makes it seem. Verification does indeed perform many sanity checks on
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an instruction, but it also cross-references the Inter tree to accommodate
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the new instruction. (Because of this, unverified instructions may not work,
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and this is why the code to create instructions automatically calls us.)
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::instruction</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::instruction</span></span>:<br/>Transmigration - <a href="2-trn.html#SP4_1_1">§4.1.1</a>, <a href="2-trn.html#SP4_2_1_1">§4.2.1.1</a><br/>Inter in Binary Files - <a href="3-iibf.html#SP10_1_5_4">§10.1.5.4</a><br/>The Comment Construct - <a href="4-tcc.html#SP2">§2</a><br/>The Constant Construct - <a href="4-tcc2.html#SP2">§2</a>, <a href="4-tcc2.html#SP4">§4</a><br/>The Insert Construct - <a href="4-tic.html#SP2">§2</a><br/>The Instance Construct - <a href="4-tic2.html#SP2">§2</a><br/>The Nop Construct - <a href="4-tnc.html#SP2">§2</a><br/>The Origin Construct - <a href="4-toc.html#SP2">§2</a><br/>The Package Construct - <a href="4-tpc.html#SP4">§4</a><br/>The PackageType Construct - <a href="4-tpc2.html#SP2">§2</a><br/>The Permission Construct - <a href="4-tpc3.html#SP2">§2</a><br/>The Pragma Construct - <a href="4-tpc4.html#SP2">§2</a><br/>The Primitive Construct - <a href="4-tpc5.html#SP2">§2</a><br/>The Property Construct - <a href="4-tpc6.html#SP2">§2</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP2">§2</a><br/>The Provenance Construct - <a href="4-tpc8.html#SP2">§2</a><br/>The Typename Construct - <a href="4-ttc.html#SP2">§2</a><br/>The Variable Construct - <a href="4-tvc.html#SP2">§2</a><br/>The Assembly Construct - <a href="5-tac.html#SP2">§2</a><br/>The Cast Construct - <a href="5-tcc.html#SP2">§2</a><br/>The Code Construct - <a href="5-tcc2.html#SP2">§2</a><br/>The Evaluation Construct - <a href="5-tec.html#SP2">§2</a><br/>The Inv Construct - <a href="5-tic.html#SP3">§3</a><br/>The Lab Construct - <a href="5-tlc.html#SP2">§2</a><br/>The Label Construct - <a href="5-tlc2.html#SP2">§2</a><br/>The Local Construct - <a href="5-tlc3.html#SP2">§2</a><br/>The Ref Construct - <a href="5-trc.html#SP2">§2</a><br/>The Reference Construct - <a href="5-trc2.html#SP2">§2</a><br/>The Splat Construct - <a href="5-tsc.html#SP2">§2</a><br/>The Val Construct - <a href="5-tvc.html#SP2">§2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-in.html#SP10" class="function-link"><span class="function-syntax">Inode::get_vflag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><a href="2-in.html#SP10" class="function-link"><span class="function-syntax">Inode::set_vflag</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inter_construct</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IC</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="3-ic.html#SP14" class="function-link"><span class="function-syntax">InterInstruction::get_construct</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, &</span><span class="identifier-syntax">IC</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">E</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-vi.html#SP1_1" class="named-paragraph-link"><span class="named-paragraph">Check the extent of the instruction</span><span class="named-paragraph-number">1.1</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">symbol_defn_field</span><span class="plain-syntax"> >= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="named-paragraph-container code-font"><a href="3-vi.html#SP1_2" class="named-paragraph-link"><span class="named-paragraph">Set the symbol definition to this instruction</span><span class="named-paragraph-number">1.2</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-vi.html#SP1_3" class="named-paragraph-link"><span class="named-paragraph">Apply construct-specific checks</span><span class="named-paragraph-number">1.3</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP1_1" class="paragraph-anchor"></a><b>§1.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Check the extent of the instruction</span><span class="named-paragraph-number">1.1</span></span><span class="comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">extent</span><span class="plain-syntax"> < </span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">min_extent</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">extent</span><span class="plain-syntax"> > </span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">max_extent</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">msg</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::new</span><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">msg</span><span class="plain-syntax">, </span><span class="string-syntax">"%S instruction has extent %d words, which is not between %d and %d"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">construct_name</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">extent</span><span class="plain-syntax">, </span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">min_extent</span><span class="plain-syntax">, </span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">max_extent</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">msg</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="3-vi.html#SP1">§1</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP1_2" class="paragraph-anchor"></a><b>§1.2. </b>Some instructions create new symbols, giving them definitions: for example,
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if <span class="extract"><span class="extract-syntax">P</span></span> is <span class="extract"><span class="extract-syntax">constant bakers_dozen = 13</span></span> then a new <span class="extract"><span class="extract-syntax">bakers_dozen</span></span> symbol must
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be created and given the node <span class="extract"><span class="extract-syntax">P</span></span> as its definition.
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</p>
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<p class="commentary">We create the symbol when we create the instruction. But the assignment of the
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instruction as the definition of the symbol happens only during verification.
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This is done because binary Inter files do contain the symbols and the instructions,
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but not the assignments of which instruction is the definition of which symbol.
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Instead, these assignments are deduced as each instruction is verified.
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</p>
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<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Set the symbol definition to this instruction</span><span class="named-paragraph-number">1.2</span></span><span class="comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">extent</span><span class="plain-syntax"> < </span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">symbol_defn_field</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"extent wrong"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbols_table</span><span class="plain-syntax"> *</span><span class="identifier-syntax">T</span><span class="plain-syntax"> = </span><a href="2-pck.html#SP10" class="function-link"><span class="function-syntax">InterPackage::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">owner</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">SID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">symbol_defn_field</span><span class="plain-syntax">];</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><a href="2-st.html#SP13" class="function-link"><span class="function-syntax">InterSymbolsTable::symbol_from_ID_not_following</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">SID</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">construct_ID</span><span class="plain-syntax"> == </span><span class="constant-syntax">LOCAL_IST</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">IC</span><span class="plain-syntax">-></span><span class="element-syntax">construct_ID</span><span class="plain-syntax"> == </span><span class="constant-syntax">LABEL_IST</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">T</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"no symbols table in function"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-vi.html#SP1_2_2" class="named-paragraph-link"><span class="named-paragraph">Make a local definition</span><span class="named-paragraph-number">1.2.2</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">T</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">T</span><span class="plain-syntax"> = </span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::globals</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="3-vi.html#SP1_2_1" class="named-paragraph-link"><span class="named-paragraph">Make a global definition</span><span class="named-paragraph-number">1.2.1</span></a></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">E</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>This code is used in <a href="3-vi.html#SP1">§1</a>.</li></ul>
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<p class="commentary firstcommentary"><a id="SP1_2_1" class="paragraph-anchor"></a><b>§1.2.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Make a global definition</span><span class="named-paragraph-number">1.2.1</span></span><span class="comment-syntax"> =</span>
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">S</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"no symbol for global definition ID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-tw2.html#SP2" class="function-link"><span class="function-syntax">Wiring::is_wired</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">CE</span><span class="plain-syntax"> = </span><a href="2-tw2.html#SP3" class="function-link"><span class="function-syntax">Wiring::cable_end</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"This is $6 but $3 ~~> $3 in $6\n"</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><a href="2-pck.html#SP12" class="function-link"><span class="function-syntax">InterPackage::container</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">), </span><span class="identifier-syntax">S</span><span class="plain-syntax">, </span><span class="identifier-syntax">CE</span><span class="plain-syntax">, </span><a href="2-pck.html#SP12" class="function-link"><span class="function-syntax">InterPackage::container</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CE</span><span class="plain-syntax">-></span><span class="element-syntax">definition</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"symbol defined outside its native scope"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP9" class="function-link"><span class="function-syntax">InterSymbol::misc_but_undefined</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::define</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> /* </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">P</span><span class="plain-syntax"> != </span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) */ {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"duplicated symbol"</span><span class="plain-syntax">, </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-vi.html#SP1_2">§1.2</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_2_2" class="paragraph-anchor"></a><b>§1.2.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Make a local definition</span><span class="named-paragraph-number">1.2.2</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">S</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"no symbol for local variable ID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::is_defined</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::define</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> /* </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">P</span><span class="plain-syntax"> != </span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) */ {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"duplicated local symbol"</span><span class="plain-syntax">, </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-vi.html#SP1_2">§1.2</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP1_3" class="paragraph-anchor"></a><b>§1.3. </b>Finally we will check, where we can do so speedily, that the bytecode for the
|
|
instruction passes various sanity checks. This is partly to catch errors in our
|
|
own work (i.e. bugs in the code generating instructions), but also because raw
|
|
bytecode read in by <a href="3-iibf.html" class="internal">Inter in Binary Files</a> is not trustworthy. There's less
|
|
chance of garbage bytecode crashing the compiler if we take precautions.
|
|
</p>
|
|
|
|
<p class="commentary">All that <a href="3-ic.html#SP17" class="internal">InterInstruction::verify</a> does is to call the <span class="extract"><span class="extract-syntax">CONSTRUCT_VERIFY_MTID</span></span>
|
|
method for the construct of the instruction. So, for example, for <span class="extract"><span class="extract-syntax">PROPERTY_IST</span></span>
|
|
instructions this is done by <a href="4-tpc6.html#SP3" class="internal">PropertyInstruction::verify</a>, and so on.
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Apply construct-specific checks</span><span class="named-paragraph-number">1.3</span></span><span class="comment-syntax"> =</span>
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="3-ic.html#SP17" class="function-link"><span class="function-syntax">InterInstruction::verify</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="3-vi.html#SP1">§1</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>Although that work is delegated to the implementation of each construct, it's
|
|
convenient for those implementations to use the functions below for some common
|
|
sorts of check.
|
|
</p>
|
|
|
|
<p class="commentary">Firstly, this tests that a field in a bytecode instruction which purportedly
|
|
holds a symbol ID, <span class="extract"><span class="extract-syntax">SID</span></span>, actually does so: and that the symbol if defined
|
|
is defined by a given <span class="extract"><span class="extract-syntax">construct</span></span>. It can still be undefined (this allows for,
|
|
e.g., the symbol to be wired to a plug for definition in some other compilation
|
|
block, or for it not to be defined yet because the rest of the bytecode for
|
|
the program has not yet been loaded); but it cannot be the wrong sort of thing.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::SID_field</span><button class="popup" onclick="togglePopup('usagePopup2')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup2">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::SID_field</span></span>:<br/>The Instance Construct - <a href="4-tic2.html#SP3">§3</a><br/>The Package Construct - <a href="4-tpc.html#SP5">§5</a><br/>The Permission Construct - <a href="4-tpc3.html#SP3">§3</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP3">§3</a><br/>The Typename Construct - <a href="4-ttc.html#SP3">§3</a><br/>The Inv Construct - <a href="5-tic.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">construct</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-vi.html#SP2" class="function-link"><span class="function-syntax">VerifyingInter::SID</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">], </span><span class="identifier-syntax">construct</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::SID</span><button class="popup" onclick="togglePopup('usagePopup3')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup3">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::SID</span></span>:<br/><a href="3-vi.html#SP6">§6</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">SID</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">construct</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbols_table</span><span class="plain-syntax"> *</span><span class="identifier-syntax">T</span><span class="plain-syntax"> = </span><a href="2-pck.html#SP10" class="function-link"><span class="function-syntax">InterPackage::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">owner</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">T</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">T</span><span class="plain-syntax"> = </span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::globals</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><a href="2-st.html#SP13" class="function-link"><span class="function-syntax">InterSymbolsTable::symbol_from_ID</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">SID</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">S</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"no symbol for SID (case 3)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">D</span><span class="plain-syntax"> = </span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP18" class="function-link"><span class="function-syntax">InterSymbol::defined_elsewhere</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP9" class="function-link"><span class="function-syntax">InterSymbol::misc_but_undefined</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">construct</span><span class="plain-syntax"> != </span><span class="constant-syntax">INVALID_IST</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">D</span><span class="plain-syntax">) && (</span><a href="2-in.html#SP13" class="function-link"><span class="function-syntax">Inode::isnt</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">D</span><span class="plain-syntax">, </span><span class="identifier-syntax">construct</span><span class="plain-syntax">))) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">err</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::new</span><span class="plain-syntax">();</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="string-syntax">"symbol has type %d not %d: "</span><span class="plain-syntax">, </span><a href="2-in.html#SP13" class="function-link"><span class="function-syntax">Inode::get_construct_ID</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">D</span><span class="plain-syntax">), </span><span class="identifier-syntax">construct</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="2-st.html#SP18" class="function-link"><span class="function-syntax">InterSymbolsTable::write_symbol_URL</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="identifier-syntax">S</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>The same, but where the ID refers to a symbol in the tree's global symbols
|
|
table (such as a primitive invocation):
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::GSID_field</span><button class="popup" onclick="togglePopup('usagePopup4')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup4">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::GSID_field</span></span>:<br/>The Package Construct - <a href="4-tpc.html#SP5">§5</a><br/>The Inv Construct - <a href="5-tic.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">construct</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">GSID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><a href="2-st.html#SP13" class="function-link"><span class="function-syntax">InterSymbolsTable::symbol_from_ID</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::globals</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">), </span><span class="identifier-syntax">GSID</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">S</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"no global symbol for GSID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">D</span><span class="plain-syntax"> = </span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP18" class="function-link"><span class="function-syntax">InterSymbol::defined_elsewhere</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP9" class="function-link"><span class="function-syntax">InterSymbol::misc_but_undefined</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">D</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"undefined global symbol"</span><span class="plain-syntax">, </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="2-in.html#SP13" class="function-link"><span class="function-syntax">Inode::isnt</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">D</span><span class="plain-syntax">, </span><span class="identifier-syntax">construct</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-sym.html#SP18" class="function-link"><span class="function-syntax">InterSymbol::defined_elsewhere</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-sym.html#SP9" class="function-link"><span class="function-syntax">InterSymbol::misc_but_undefined</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">))</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"global symbol of wrong type"</span><span class="plain-syntax">, </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b>This checks an ID for a symbol which has to represent a property owner — so,
|
|
either the typename for an enumerated type, or an instance.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::POID_field</span><button class="popup" onclick="togglePopup('usagePopup5')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup5">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::POID_field</span></span>:<br/>The Permission Construct - <a href="4-tpc3.html#SP3">§3</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">POID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbols_table</span><span class="plain-syntax"> *</span><span class="identifier-syntax">T</span><span class="plain-syntax"> = </span><a href="2-pck.html#SP10" class="function-link"><span class="function-syntax">InterPackage::scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">owner</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">T</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">T</span><span class="plain-syntax"> = </span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::globals</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><a href="2-st.html#SP13" class="function-link"><span class="function-syntax">InterSymbolsTable::symbol_from_ID</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">, </span><span class="identifier-syntax">POID</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">S</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"no symbol for property-owner ID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">D</span><span class="plain-syntax"> = </span><a href="2-sym.html#SP15" class="function-link"><span class="function-syntax">InterSymbol::definition</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP18" class="function-link"><span class="function-syntax">InterSymbol::defined_elsewhere</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-sym.html#SP9" class="function-link"><span class="function-syntax">InterSymbol::misc_but_undefined</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">D</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"undefined property-owner symbol"</span><span class="plain-syntax">, </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="2-in.html#SP13" class="function-link"><span class="function-syntax">Inode::isnt</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">D</span><span class="plain-syntax">, </span><span class="constant-syntax">TYPENAME_IST</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-sym.html#SP18" class="function-link"><span class="function-syntax">InterSymbol::defined_elsewhere</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-in.html#SP13" class="function-link"><span class="function-syntax">Inode::isnt</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">D</span><span class="plain-syntax">, </span><span class="constant-syntax">INSTANCE_IST</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="2-sym.html#SP9" class="function-link"><span class="function-syntax">InterSymbol::misc_but_undefined</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"property-owner symbol of wrong type"</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="2-sym.html#SP19" class="function-link"><span class="function-syntax">InterSymbol::identifier</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>Next, a field which purportedly holds a type constructor such as <span class="extract"><span class="extract-syntax">INT32_ITCONC</span></span>
|
|
or <span class="extract"><span class="extract-syntax">FUNCTION_ITCONC</span></span>: see <a href="3-idt.html" class="internal">Inter Data Types</a>.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::constructor_field</span><button class="popup" onclick="togglePopup('usagePopup6')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup6">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::constructor_field</span></span>:<br/>The Typename Construct - <a href="4-ttc.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">ID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-idt.html#SP2" class="function-link"><span class="function-syntax">InterTypes::is_valid_constructor_code</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ID</span><span class="plain-syntax">) == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"unknown type constructor"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b>Next, a field which purportedly holds a valid type ID (TID): again, see
|
|
<a href="3-idt.html" class="internal">Inter Data Types</a>.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::TID_field</span><button class="popup" onclick="togglePopup('usagePopup7')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup7">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::TID_field</span></span>:<br/>The Constant Construct - <a href="4-tcc2.html#SP5">§5</a><br/>The Package Construct - <a href="4-tpc.html#SP5">§5</a><br/>The Property Construct - <a href="4-tpc6.html#SP3">§3</a><br/>The Typename Construct - <a href="4-ttc.html#SP3">§3</a><br/>The Variable Construct - <a href="4-tvc.html#SP3">§3</a><br/>The Cast Construct - <a href="5-tcc.html#SP3">§3</a><br/>The Local Construct - <a href="5-tlc3.html#SP3">§3</a><br/>The Ref Construct - <a href="5-trc.html#SP3">§3</a><br/>The Val Construct - <a href="5-tvc.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">TID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">TID</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="3-idt.html#SP2" class="function-link"><span class="function-syntax">InterTypes::is_valid_constructor_code</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">TID</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-vi.html#SP2" class="function-link"><span class="function-syntax">VerifyingInter::SID</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">TID</span><span class="plain-syntax">, </span><span class="constant-syntax">TYPENAME_IST</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b>Next, a field which purportedly holds a valid text ID:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::text_field</span><button class="popup" onclick="togglePopup('usagePopup8')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup8">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::text_field</span></span>:<br/>The Comment Construct - <a href="4-tcc.html#SP3">§3</a><br/>The Insert Construct - <a href="4-tic.html#SP3">§3</a><br/>The Origin Construct - <a href="4-toc.html#SP3">§3</a><br/>The Pragma Construct - <a href="4-tpc4.html#SP3">§3</a><br/>The Inv Construct - <a href="5-tic.html#SP4">§4</a><br/>The Splat Construct - <a href="5-tsc.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_warehouse</span><span class="plain-syntax"> *</span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-tw.html#SP6" class="function-link"><span class="function-syntax">InterWarehouse::known_type_code</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax">) == </span><span class="constant-syntax">TEXT_IRSRC</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"not a valid text ID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. </b>And a node list ID:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::node_list_field</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::node_list_field</span></span>:<br/>The Instance Construct - <a href="4-tic2.html#SP3">§3</a><br/>The Property Construct - <a href="4-tpc6.html#SP3">§3</a><br/>The Typename Construct - <a href="4-ttc.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_warehouse</span><span class="plain-syntax"> *</span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-tw.html#SP6" class="function-link"><span class="function-syntax">InterWarehouse::known_type_code</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax">) == </span><span class="constant-syntax">NODE_LIST_IRSRC</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"not a valid node list ID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. </b>And a symbols table ID:
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</p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::symbols_table_field</span><button class="popup" onclick="togglePopup('usagePopup10')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup10">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::symbols_table_field</span></span>:<br/>The Package Construct - <a href="4-tpc.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">inter_warehouse</span><span class="plain-syntax"> *</span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-tw.html#SP6" class="function-link"><span class="function-syntax">InterWarehouse::known_type_code</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax">) == </span><span class="constant-syntax">SYMBOLS_TABLE_IRSRC</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"not a valid symbols table ID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax">}</span>
|
|
</pre>
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|
<p class="commentary firstcommentary"><a id="SP10" class="paragraph-anchor"></a><b>§10. </b>And a package ID:
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|
</p>
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|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::package_field</span><button class="popup" onclick="togglePopup('usagePopup11')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup11">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::package_field</span></span>:<br/>The Package Construct - <a href="4-tpc.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">field</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="identifier-syntax">field</span><span class="plain-syntax">];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_warehouse</span><span class="plain-syntax"> *</span><span class="identifier-syntax">W</span><span class="plain-syntax"> = </span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::warehouse</span></a><span class="plain-syntax">(</span><a href="2-in.html#SP6" class="function-link"><span class="function-syntax">Inode::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="2-tw.html#SP6" class="function-link"><span class="function-syntax">InterWarehouse::known_type_code</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">W</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_ID</span><span class="plain-syntax">) == </span><span class="constant-syntax">PACKAGE_REF_IRSRC</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-in.html#SP15" class="function-link"><span class="function-syntax">Inode::error</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"not a valid package ID"</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>§11. </b>Finally, two consecutive fields which purportedly hold a valid data pair in
|
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the context of the current package:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">VerifyingInter::data_pair_fields</span><button class="popup" onclick="togglePopup('usagePopup12')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup12">Usage of <span class="code-font"><span class="function-syntax">VerifyingInter::data_pair_fields</span></span>:<br/>The Constant Construct - <a href="4-tcc2.html#SP5">§5</a><br/>The Instance Construct - <a href="4-tic2.html#SP3">§3</a><br/>The PropertyValue Construct - <a href="4-tpc7.html#SP3">§3</a><br/>The Variable Construct - <a href="4-tvc.html#SP3">§3</a><br/>The Ref Construct - <a href="5-trc.html#SP3">§3</a><br/>The Val Construct - <a href="5-tvc.html#SP3">§3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">first_field</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_type</span><span class="plain-syntax"> </span><span class="identifier-syntax">type</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="3-ivp.html#SP22" class="function-link"><span class="function-syntax">InterValuePairs::verify</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">owner</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><a href="3-ivp.html#SP19" class="function-link"><span class="function-syntax">InterValuePairs::get</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">first_field</span><span class="plain-syntax">), </span><span class="identifier-syntax">type</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax">}</span>
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|
</pre>
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