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<!--Weave of 'The Inv Construct' generated by Inweb-->
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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#5">Chapter 5: Code Constructs</a></li><li><b>The Inv Construct</b></li></ul></div>
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<p class="purpose">Defining the inv construct.</p>
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<ul class="toc"><li><a href="5-tic.html#SP1">§1. Definition</a></li><li><a href="5-tic.html#SP2">§2. Instructions</a></li><li><a href="5-tic.html#SP7">§7. Creating from textual Inter syntax</a></li><li><a href="5-tic.html#SP8">§8. Writing to textual Inter syntax</a></li><li><a href="5-tic.html#SP9">§9. Access functions</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Definition. </b>For what this does and why it is used, see <a href="../inter/M-ti.html" class="internal">Textual Inter (in inter)</a>.
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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">void</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::define_construct</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">InvInstruction::define_construct</span></span>:<br/>Inter Constructs - <a href="3-ic.html#SP15">§15</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">void</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><a href="3-ic.html#SP1" class="function-link"><span class="function-syntax">InterInstruction::create_construct</span></a><span class="plain-syntax">(</span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"inv"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="3-ic.html#SP8" class="function-link"><span class="function-syntax">InterInstruction::specify_syntax</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"inv TOKEN"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="3-ic.html#SP4" class="function-link"><span class="function-syntax">InterInstruction::data_extent_always</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">2</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="3-ic.html#SP3" class="function-link"><span class="function-syntax">InterInstruction::allow_in_depth_range</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">1</span><span class="plain-syntax">, </span><span class="constant-syntax">INFINITELY_DEEP</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="3-ic.html#SP3" class="function-link"><span class="function-syntax">InterInstruction::permit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">INSIDE_CODE_PACKAGE_ICUP</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="3-ic.html#SP3" class="function-link"><span class="function-syntax">InterInstruction::permit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">CAN_HAVE_CHILDREN_ICUP</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">CONSTRUCT_READ_MTID</span><span class="plain-syntax">, </span><a href="5-tic.html#SP7" class="function-link"><span class="function-syntax">InvInstruction::read</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">CONSTRUCT_TRANSPOSE_MTID</span><span class="plain-syntax">, </span><a href="5-tic.html#SP3" class="function-link"><span class="function-syntax">InvInstruction::transpose</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">CONSTRUCT_VERIFY_MTID</span><span class="plain-syntax">, </span><a href="5-tic.html#SP4" class="function-link"><span class="function-syntax">InvInstruction::verify</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">CONSTRUCT_WRITE_MTID</span><span class="plain-syntax">, </span><a href="5-tic.html#SP8" class="function-link"><span class="function-syntax">InvInstruction::write</span></a><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">METHOD_ADD</span><span class="plain-syntax">(</span><span class="identifier-syntax">IC</span><span class="plain-syntax">, </span><span class="constant-syntax">CONSTRUCT_VERIFY_CHILDREN_MTID</span><span class="plain-syntax">, </span><a href="5-tic.html#SP5" class="function-link"><span class="function-syntax">InvInstruction::verify_children</span></a><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="SP2" class="paragraph-anchor"></a><b>§2. Instructions. </b>In bytecode, the frame of an <span class="extract"><span class="extract-syntax">inv</span></span> instruction is laid out with the
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compulsory words — see <a href="2-in.html" class="internal">Inter Nodes</a> — followed by:
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</p>
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<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax"> (</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">0</span><span class="plain-syntax">)</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">INVOKEE_INV_IFLD</span><span class="plain-syntax"> (</span><span class="constant-syntax">DATA_IFLD</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">)</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>It's arguably the case that <span class="extract"><span class="extract-syntax">inv</span></span> is three instructions, not one, but it is
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also arguable the other way, and here we are. The <span class="extract"><span class="extract-syntax">METHOD_INV_IFLD</span></span> indicates
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which variant we are looking at:
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</p>
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<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">PRIMITIVE_INVMETH</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">FUNCTION_INVMETH</span><span class="plain-syntax"> </span><span class="constant-syntax">2</span>
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<span class="definition-keyword">define</span> <span class="constant-syntax">OPCODE_INVMETH</span><span class="plain-syntax"> </span><span class="constant-syntax">3</span>
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</pre>
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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">InvInstruction::new_primitive</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">InvInstruction::new_primitive</span></span>:<br/><a href="5-tic.html#SP7_1">§7.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</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">prim_s</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</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">GID</span><span class="plain-syntax"> = </span><a href="2-st.html#SP16" class="function-link"><span class="function-syntax">InterSymbolsTable::id_from_symbol</span></a><span class="plain-syntax">(</span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">), </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">prim_s</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><a href="2-in.html#SP5" class="function-link"><span class="function-syntax">Inode::new_with_2_data_fields</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> /* </span><span class="identifier-syntax">METHOD_INV_IFLD:</span><span class="plain-syntax"> */ </span><span class="constant-syntax">PRIMITIVE_INVMETH</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> /* </span><span class="identifier-syntax">INVOKEE_INV_IFLD:</span><span class="plain-syntax"> */ </span><span class="identifier-syntax">GID</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">level</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-vi.html#SP1" class="function-link"><span class="function-syntax">VerifyingInter::instruction</span></a><span class="plain-syntax">(</span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</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><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><a href="2-np.html#SP3" class="function-link"><span class="function-syntax">NodePlacement::move_to_moving_bookmark</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">IBM</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>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">InvInstruction::new_function_call</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">InvInstruction::new_function_call</span></span>:<br/><a href="5-tic.html#SP7_3">§7.3</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</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">function_s</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</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><a href="2-in.html#SP5" class="function-link"><span class="function-syntax">Inode::new_with_2_data_fields</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> /* </span><span class="identifier-syntax">METHOD_INV_IFLD:</span><span class="plain-syntax"> */ </span><span class="constant-syntax">FUNCTION_INVMETH</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> /* </span><span class="identifier-syntax">INVOKEE_INV_IFLD:</span><span class="plain-syntax"> */ </span><a href="2-st.html#SP17" class="function-link"><span class="function-syntax">InterSymbolsTable::id_at_bookmark</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">function_s</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">level</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-vi.html#SP1" class="function-link"><span class="function-syntax">VerifyingInter::instruction</span></a><span class="plain-syntax">(</span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</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><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><a href="2-np.html#SP3" class="function-link"><span class="function-syntax">NodePlacement::move_to_moving_bookmark</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">IBM</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>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="function-syntax">InvInstruction::new_assembly</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">InvInstruction::new_assembly</span></span>:<br/><a href="5-tic.html#SP7_2">§7.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</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">opcode_name</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">level</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</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><a href="2-in.html#SP5" class="function-link"><span class="function-syntax">Inode::new_with_2_data_fields</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> /* </span><span class="identifier-syntax">METHOD_INV_IFLD:</span><span class="plain-syntax"> */ </span><span class="constant-syntax">OPCODE_INVMETH</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> /* </span><span class="identifier-syntax">INVOKEE_INV_IFLD:</span><span class="plain-syntax"> */ </span><a href="2-tw.html#SP7" class="function-link"><span class="function-syntax">InterWarehouse::create_text_at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">opcode_name</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">level</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-vi.html#SP1" class="function-link"><span class="function-syntax">VerifyingInter::instruction</span></a><span class="plain-syntax">(</span><a href="2-bkm.html#SP6" class="function-link"><span class="function-syntax">InterBookmark::package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</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><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>
|
|
<span class="plain-syntax"> </span><a href="2-np.html#SP3" class="function-link"><span class="function-syntax">NodePlacement::move_to_moving_bookmark</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">IBM</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>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::transpose</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">InvInstruction::transpose</span></span>:<br/><a href="5-tic.html#SP1">§1</a></span></button><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="reserved-syntax">inter_tree_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">inter_ti</span><span class="plain-syntax"> *</span><span class="identifier-syntax">grid</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">grid_extent</span><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>
|
|
<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">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] == </span><span class="constant-syntax">OPCODE_INVMETH</span><span class="plain-syntax">)</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">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">INVOKEE_INV_IFLD</span><span class="plain-syntax">] = </span><span class="identifier-syntax">grid</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="constant-syntax">INVOKEE_INV_IFLD</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>Verification consists only of sanity checks.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::verify</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">InvInstruction::verify</span></span>:<br/><a href="5-tic.html#SP1">§1</a></span></button><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="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">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_error_message</span><span class="plain-syntax"> **</span><span class="identifier-syntax">E</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</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="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">]) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">PRIMITIVE_INVMETH:</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="3-vi.html#SP3" class="function-link"><span class="function-syntax">VerifyingInter::GSID_field</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INVOKEE_INV_IFLD</span><span class="plain-syntax">, </span><span class="constant-syntax">PRIMITIVE_IST</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">E</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPCODE_INVMETH:</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="3-vi.html#SP7" class="function-link"><span class="function-syntax">VerifyingInter::text_field</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="constant-syntax">INVOKEE_INV_IFLD</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">E</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">FUNCTION_INVMETH:</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="3-vi.html#SP2" class="function-link"><span class="function-syntax">VerifyingInter::SID_field</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="constant-syntax">INVOKEE_INV_IFLD</span><span class="plain-syntax">, </span><span class="constant-syntax">INVALID_IST</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">E</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">default:</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">"bad invocation method"</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">break</span><span class="plain-syntax">;</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>Verification of the child nodes, however, is not entirely passive, as we
|
|
shall see.
|
|
</p>
|
|
|
|
<p class="commentary">This function implements a primitive typechecker for invocations, though it is
|
|
more notable for what it doesn't check than for what it does: Inter is a very
|
|
permissive language. The rules are:
|
|
</p>
|
|
|
|
<ul class="items"><li>(a) An assembly opcode can have any number of arguments, of any category.
|
|
</li><li>(b) A function call can have any number of arguments, provided they all have
|
|
category <span class="extract"><span class="extract-syntax">val</span></span>.
|
|
</li><li>(c) A primitive invocation must have exactly the number of arguments in its
|
|
signature, whose categories must be exactly as given in the signature. For
|
|
example, if the signature of the primitive invoked at <span class="extract"><span class="extract-syntax">P</span></span> is <span class="extract"><span class="extract-syntax">ref val val -> void</span></span>,
|
|
then <span class="extract"><span class="extract-syntax">P</span></span> needs to have exactly three children, of categories <span class="extract"><span class="extract-syntax">ref</span></span>, <span class="extract"><span class="extract-syntax">val</span></span>, <span class="extract"><span class="extract-syntax">val</span></span>.
|
|
</li></ul>
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::verify_children</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">InvInstruction::verify_children</span></span>:<br/><a href="5-tic.html#SP1">§1</a></span></button><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="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">inter_error_message</span><span class="plain-syntax"> **</span><span class="identifier-syntax">E</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">P</span><span class="plain-syntax">-></span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] == </span><span class="constant-syntax">PRIMITIVE_INVMETH</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">arity_as_invoked</span><span class="plain-syntax">=0;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_INTER_CHILDREN</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">) </span><span class="identifier-syntax">arity_as_invoked</span><span class="plain-syntax">++;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">-></span><span class="element-syntax">tree</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">prim_s</span><span class="plain-syntax"> = </span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::primitive</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="named-paragraph-container code-font"><a href="5-tic.html#SP5_1" class="named-paragraph-link"><span class="named-paragraph">Opportunistically improve the use of indirect function call primitives</span><span class="named-paragraph-number">5.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-tic.html#SP5_2" class="named-paragraph-link"><span class="named-paragraph">Check there are exactly the right number of arguments</span><span class="named-paragraph-number">5.2</span></a></span><span class="plain-syntax">;</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">i</span><span class="plain-syntax">=0;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_THROUGH_INTER_CHILDREN</span><span class="plain-syntax">(</span><span class="identifier-syntax">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">i</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">C</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">[0] == </span><span class="constant-syntax">SPLAT_IST</span><span class="plain-syntax">) </span><span class="reserved-syntax">continue</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">C</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">[0] != </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">REF_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">LAB_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">CODE_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">VAL_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">EVALUATION_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">REFERENCE_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">CAST_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">COMMENT_IST</span><span class="plain-syntax">) &&</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">C</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">[0] != </span><span class="constant-syntax">ASSEMBLY_IST</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">"forbidden instruction under an inv"</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="plain-syntax"> }</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><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] != </span><span class="constant-syntax">OPCODE_INVMETH</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-tic.html#SP5_3" class="named-paragraph-link"><span class="named-paragraph">Check that the category of the child matches what is expected</span><span class="named-paragraph-number">5.3</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP5_1" class="paragraph-anchor"></a><b>§5.1. </b>This is the part which is not passive. If we observe an indirect function
|
|
call made by invoking a primitive such as <span class="extract"><span class="extract-syntax">!indirect0</span></span>, but with the wrong
|
|
number of arguments, then we change it to the version with the right arity.
|
|
(For example, if we see <span class="extract"><span class="extract-syntax">!indirect1</span></span> with three arguments, we correct it to
|
|
<span class="extract"><span class="extract-syntax">!indirect3</span></span>.)
|
|
</p>
|
|
|
|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Opportunistically improve the use of indirect function call primitives</span><span class="named-paragraph-number">5.1</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><a href="4-tpc5.html#SP8" class="function-link"><span class="function-syntax">PrimitiveInstruction::arity</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prim_s</span><span class="plain-syntax">) != </span><span class="identifier-syntax">arity_as_invoked</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">BIP</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Primitives::to_BIP</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">prim_s</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">Primitives::is_BIP_for_indirect_call_returning_value</span><span class="plain-syntax">(</span><span class="identifier-syntax">BIP</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prim_s</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Primitives::from_BIP</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Primitives::BIP_for_indirect_call_returning_value</span><span class="plain-syntax">(</span><span class="identifier-syntax">arity_as_invoked</span><span class="plain-syntax"> - </span><span class="constant-syntax">1</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="5-tic.html#SP10" class="function-link"><span class="function-syntax">InvInstruction::write_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">prim_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><span class="identifier-syntax">Primitives::is_BIP_for_void_indirect_call</span><span class="plain-syntax">(</span><span class="identifier-syntax">BIP</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">prim_s</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Primitives::from_BIP</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">Primitives::BIP_for_void_indirect_call</span><span class="plain-syntax">(</span><span class="identifier-syntax">arity_as_invoked</span><span class="plain-syntax"> - </span><span class="constant-syntax">1</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="5-tic.html#SP10" class="function-link"><span class="function-syntax">InvInstruction::write_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="identifier-syntax">prim_s</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
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</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-tic.html#SP5">§5</a>.</li></ul>
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|
<p class="commentary firstcommentary"><a id="SP5_2" class="paragraph-anchor"></a><b>§5.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Check there are exactly the right number of arguments</span><span class="named-paragraph-number">5.2</span></span><span class="comment-syntax"> =</span>
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|
</p>
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|
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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><a href="4-tpc5.html#SP8" class="function-link"><span class="function-syntax">PrimitiveInstruction::arity</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prim_s</span><span class="plain-syntax">) != </span><span class="identifier-syntax">arity_as_invoked</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">err</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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"this inv of %S should have %d argument(s), but has %d"</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> (</span><span class="identifier-syntax">prim_s</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">prim_s</span><span class="plain-syntax">)):</span><span class="identifier-syntax">I</span><span class="string-syntax">"<unknown>"</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> </span><a href="4-tpc5.html#SP8" class="function-link"><span class="function-syntax">PrimitiveInstruction::arity</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">prim_s</span><span class="plain-syntax">), </span><span class="identifier-syntax">arity_as_invoked</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">err</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>
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|
<span class="plain-syntax"> }</span>
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|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-tic.html#SP5">§5</a>.</li></ul>
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|
<p class="commentary firstcommentary"><a id="SP5_3" class="paragraph-anchor"></a><b>§5.3. </b>In effect, this is a limited form of typechecker for invocations. For example,
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if the invocation has the signature <span class="extract"><span class="extract-syntax">ref val -> void</span></span>, then we expect its first
|
|
child (operand 0) to be a <span class="extract"><span class="extract-syntax">ref</span></span>, and its second (operand 1) to be a <span class="extract"><span class="extract-syntax">val</span></span>.
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</p>
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|
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|
<p class="commentary"><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">Check that the category of the child matches what is expected</span><span class="named-paragraph-number">5.3</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="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">cat_found</span><span class="plain-syntax"> = </span><a href="5-tic.html#SP6" class="function-link"><span class="function-syntax">InvInstruction::evaluated_category</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">C</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">cat_needed</span><span class="plain-syntax"> = </span><span class="constant-syntax">VAL_PRIM_CAT</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">P</span><span class="plain-syntax">-></span><span class="identifier-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] == </span><span class="constant-syntax">PRIMITIVE_INVMETH</span><span class="plain-syntax">)</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">cat_needed</span><span class="plain-syntax"> = </span><a href="4-tpc5.html#SP8" class="function-link"><span class="function-syntax">PrimitiveInstruction::operand_category</span></a><span class="plain-syntax">(</span>
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|
<span class="plain-syntax"> </span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::primitive</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="plain-syntax">-1);</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">cat_found</span><span class="plain-syntax"> != </span><span class="identifier-syntax">cat_needed</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">invokee</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">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="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] == </span><span class="constant-syntax">PRIMITIVE_INVMETH</span><span class="plain-syntax">)</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">invokee</span><span class="plain-syntax"> = </span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::primitive</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><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="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] == </span><span class="constant-syntax">FUNCTION_INVMETH</span><span class="plain-syntax">)</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">invokee</span><span class="plain-syntax"> = </span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::function</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="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>
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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">err</span><span class="plain-syntax">, </span><span class="string-syntax">"operand %d of inv '%S' should be %s, but this is %s"</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax">, (</span><span class="identifier-syntax">invokee</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">invokee</span><span class="plain-syntax">)):</span><span class="identifier-syntax">I</span><span class="string-syntax">"<unknown>"</span><span class="plain-syntax">,</span>
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|
<span class="plain-syntax"> </span><a href="4-tpc5.html#SP7" class="function-link"><span class="function-syntax">PrimitiveInstruction::cat_name</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">cat_needed</span><span class="plain-syntax">),</span>
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|
<span class="plain-syntax"> </span><a href="4-tpc5.html#SP7" class="function-link"><span class="function-syntax">PrimitiveInstruction::cat_name</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">cat_found</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">C</span><span class="plain-syntax">, </span><span class="identifier-syntax">err</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="plain-syntax"> }</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-tic.html#SP5">§5</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b>So this is the category for the value produced (if any) by an instruction.
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|
The default is 0, which means <span class="extract"><span class="extract-syntax">void</span></span>.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::evaluated_category</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">InvInstruction::evaluated_category</span></span>:<br/><a href="5-tic.html#SP5_3">§5.3</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="plain-syntax"> </span><span class="reserved-syntax">switch</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">[0]) {</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">REF_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">REF_PRIM_CAT</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">REFERENCE_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">REF_PRIM_CAT</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">VAL_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">VAL_PRIM_CAT</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">EVALUATION_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">VAL_PRIM_CAT</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CAST_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">VAL_PRIM_CAT</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ASSEMBLY_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">VAL_PRIM_CAT</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">LAB_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">LAB_PRIM_CAT</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CODE_IST:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">CODE_PRIM_CAT</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">INV_IST:</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><span class="element-syntax">W</span><span class="plain-syntax">.</span><span class="element-syntax">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] == </span><span class="constant-syntax">PRIMITIVE_INVMETH</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="4-tpc5.html#SP8" class="function-link"><span class="function-syntax">PrimitiveInstruction::result_category</span></a><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::primitive</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">return</span><span class="plain-syntax"> </span><span class="constant-syntax">VAL_PRIM_CAT</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="constant-syntax">0</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. Creating from textual Inter syntax. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::read</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">InvInstruction::read</span></span>:<br/><a href="5-tic.html#SP1">§1</a></span></button><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="reserved-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_line_parse</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ilp</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_error_location</span><span class="plain-syntax"> *</span><span class="identifier-syntax">eloc</span><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>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">invoked_text</span><span class="plain-syntax"> = </span><span class="identifier-syntax">ilp</span><span class="plain-syntax">-></span><span class="element-syntax">mr</span><span class="plain-syntax">.</span><span class="identifier-syntax">exp</span><span class="plain-syntax">[0];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax"> (</span><span class="identifier-syntax">Str::get_first_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">invoked_text</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="character-syntax">'!'</span><span class="plain-syntax">: </span><span class="named-paragraph-container code-font"><a href="5-tic.html#SP7_1" class="named-paragraph-link"><span class="named-paragraph">This is a primitive invocation</span><span class="named-paragraph-number">7.1</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="character-syntax">'@'</span><span class="plain-syntax">: </span><span class="named-paragraph-container code-font"><a href="5-tic.html#SP7_2" class="named-paragraph-link"><span class="named-paragraph">This is an assembly opcode invocation</span><span class="named-paragraph-number">7.2</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">default:</span><span class="plain-syntax"> </span><span class="named-paragraph-container code-font"><a href="5-tic.html#SP7_3" class="named-paragraph-link"><span class="named-paragraph">This is a function call invocation</span><span class="named-paragraph-number">7.3</span></a></span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP7_1" class="paragraph-anchor"></a><b>§7.1. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">This is a primitive invocation</span><span class="named-paragraph-number">7.1</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">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax"> = </span><a href="2-bkm.html#SP7" class="function-link"><span class="function-syntax">InterBookmark::tree</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</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">prim_s</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><a href="2-st.html#SP7" class="function-link"><span class="function-syntax">InterSymbolsTable::symbol_from_name</span></a><span class="plain-syntax">(</span><a href="2-it.html#SP3" class="function-link"><span class="function-syntax">InterTree::global_scope</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">invoked_text</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">prim_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">prim_s</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Primitives::declare_one_named</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> &(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="element-syntax">site</span><span class="plain-syntax">.</span><span class="identifier-syntax">strdata</span><span class="plain-syntax">.</span><span class="identifier-syntax">package_types_bookmark</span><span class="plain-syntax">), </span><span class="identifier-syntax">invoked_text</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">prim_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="3-ie.html#SP4" class="function-link"><span class="function-syntax">InterErrors::quoted</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"'inv' on undeclared primitive"</span><span class="plain-syntax">, </span><span class="identifier-syntax">invoked_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="5-tic.html#SP3" class="function-link"><span class="function-syntax">InvInstruction::new_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">prim_s</span><span class="plain-syntax">, (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">ilp</span><span class="plain-syntax">-></span><span class="element-syntax">indent_level</span><span class="plain-syntax">, </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-tic.html#SP7">§7</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP7_2" class="paragraph-anchor"></a><b>§7.2. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">This is an assembly opcode invocation</span><span class="named-paragraph-number">7.2</span></span><span class="comment-syntax"> =</span>
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|
</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="5-tic.html#SP3" class="function-link"><span class="function-syntax">InvInstruction::new_assembly</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">invoked_text</span><span class="plain-syntax">, (</span><span class="constant-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">ilp</span><span class="plain-syntax">-></span><span class="element-syntax">indent_level</span><span class="plain-syntax">, </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-tic.html#SP7">§7</a>.</li></ul>
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|
<p class="commentary firstcommentary"><a id="SP7_3" class="paragraph-anchor"></a><b>§7.3. </b><span class="named-paragraph-container code-font"><span class="named-paragraph-defn">This is a function call invocation</span><span class="named-paragraph-number">7.3</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">
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">function_s</span><span class="plain-syntax"> = </span><a href="3-iitf.html#SP5" class="function-link"><span class="function-syntax">TextualInter::find_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">, </span><span class="identifier-syntax">invoked_text</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">, </span><span class="identifier-syntax">E</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">function_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="3-ie.html#SP4" class="function-link"><span class="function-syntax">InterErrors::quoted</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="string-syntax">"'inv' on unknown function"</span><span class="plain-syntax">, </span><span class="identifier-syntax">invoked_text</span><span class="plain-syntax">, </span><span class="identifier-syntax">eloc</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">E</span><span class="plain-syntax"> = </span><a href="5-tic.html#SP3" class="function-link"><span class="function-syntax">InvInstruction::new_function_call</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">function_s</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">ilp</span><span class="plain-syntax">-></span><span class="element-syntax">indent_level</span><span class="plain-syntax">, </span><span class="identifier-syntax">eloc</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>
|
|
</pre>
|
|
<ul class="endnotetexts"><li>This code is used in <a href="5-tic.html#SP7">§7</a>.</li></ul>
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. Writing to textual Inter syntax. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::write</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">InvInstruction::write</span></span>:<br/><a href="5-tic.html#SP1">§1</a></span></button><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">OUTPUT_STREAM</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">switch</span><span class="plain-syntax"> (</span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::method</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">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">PRIMITIVE_INVMETH:</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"inv %S"</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><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::primitive</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">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPCODE_INVMETH:</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"inv %S"</span><span class="plain-syntax">, </span><a href="2-in.html#SP14" class="function-link"><span class="function-syntax">Inode::ID_to_text</span></a><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="constant-syntax">INVOKEE_INV_IFLD</span><span class="plain-syntax">]));</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">FUNCTION_INVMETH:</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE</span><span class="plain-syntax">(</span><span class="string-syntax">"inv "</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-iitf.html#SP10" class="function-link"><span class="function-syntax">TextualInter::write_symbol_from</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">OUT</span><span class="plain-syntax">, </span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INVOKEE_INV_IFLD</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. Access functions. </b></p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="constant-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::method</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">InvInstruction::method</span></span>:<br/><a href="5-tic.html#SP8">§8</a><br/>The Reference Construct - <a href="5-trc2.html#SP6">§6</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="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::is</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</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="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">];</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</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="function-syntax">InvInstruction::function</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">InvInstruction::function</span></span>:<br/><a href="5-tic.html#SP5_3">§5.3</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="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::is</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::method</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">) == </span><span class="constant-syntax">FUNCTION_INVMETH</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-st.html#SP14" class="function-link"><span class="function-syntax">InterSymbolsTable::symbol_from_ID_at_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INVOKEE_INV_IFLD</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>
|
|
|
|
<span class="reserved-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">InvInstruction::primitive</span><button class="popup" onclick="togglePopup('usagePopup13')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup13">Usage of <span class="code-font"><span class="function-syntax">InvInstruction::primitive</span></span>:<br/><a href="5-tic.html#SP5">§5</a>, <a href="5-tic.html#SP5_3">§5.3</a>, <a href="5-tic.html#SP6">§6</a>, <a href="5-tic.html#SP8">§8</a><br/>Transmigration - <a href="2-trn.html#SP4">§4</a><br/>The Reference Construct - <a href="5-trc2.html#SP6">§6</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="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::is</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::method</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">) == </span><span class="constant-syntax">PRIMITIVE_INVMETH</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-st.html#SP14" class="function-link"><span class="function-syntax">InterSymbolsTable::global_symbol_from_ID_at_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INVOKEE_INV_IFLD</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>
|
|
|
|
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">InvInstruction::opcode</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">if</span><span class="plain-syntax"> ((</span><a href="2-in.html#SP13" class="function-link"><span class="function-syntax">Inode::is</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">)) &&</span>
|
|
<span class="plain-syntax"> (</span><a href="5-tic.html#SP9" class="function-link"><span class="function-syntax">InvInstruction::method</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">) == </span><span class="constant-syntax">OPCODE_INVMETH</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#SP14" class="function-link"><span class="function-syntax">Inode::ID_to_text</span></a><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="constant-syntax">INVOKEE_INV_IFLD</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="SP10" class="paragraph-anchor"></a><b>§10. </b>In <a href="2-trn.html" class="internal">Transmigration</a> and for various other reasons, it's necessary to change
|
|
an invocation into a primitive, or a different primitive. So:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InvInstruction::write_primitive</span><button class="popup" onclick="togglePopup('usagePopup14')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup14">Usage of <span class="code-font"><span class="function-syntax">InvInstruction::write_primitive</span></span>:<br/><a href="5-tic.html#SP5_1">§5.1</a><br/>Transmigration - <a href="2-trn.html#SP4_1">§4.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</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">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prim</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::is</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">P</span><span class="plain-syntax">, </span><span class="constant-syntax">INV_IST</span><span class="plain-syntax">)) {</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">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">METHOD_INV_IFLD</span><span class="plain-syntax">] = </span><span class="constant-syntax">PRIMITIVE_INVMETH</span><span class="plain-syntax">;</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">instruction</span><span class="plain-syntax">[</span><span class="constant-syntax">INVOKEE_INV_IFLD</span><span class="plain-syntax">] = </span><a href="2-st.html#SP16" class="function-link"><span class="function-syntax">InterSymbolsTable::id_from_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">prim</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"wrote primitive to non-invocation"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
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