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<!--Weave of 'Measurements' generated by Inweb-->
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<div class="breadcrumbs">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../compiler.html">Inform7</a></li><li><a href="index.html">runtime</a></li><li><a href="index.html#5">Chapter 5: Miscellany</a></li><li><b>Measurements</b></li></ul></div>
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<p class="purpose">To compile run-time support for measurement adjectives.</p>
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b></p>
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<pre class="displayed-code all-displayed-code code-font">
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<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">measurement_compilation_data</span><span class="plain-syntax"> {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">mdef_iname</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">property_schema_written</span><span class="plain-syntax">; </span><span class="comment-syntax"> I6 schema for testing written yet?</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">measurement_compilation_data</span><span class="plain-syntax">;</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">RTMeasurements::make_iname</span><span class="plain-syntax">(</span><span class="identifier-syntax">measurement_definition</span><span class="plain-syntax"> *</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">package_request</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><a href="2-hrr.html#SP6" class="function-link"><span class="function-syntax">Hierarchy::local_package</span></a><span class="plain-syntax">(</span><span class="constant-syntax">ADJECTIVE_MEANINGS_HAP</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">mdef_iname</span><span class="plain-syntax"> = </span><a href="2-hrr.html#SP6" class="function-link"><span class="function-syntax">Hierarchy::make_iname_in</span></a><span class="plain-syntax">(</span><span class="constant-syntax">MEASUREMENT_FN_HL</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="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">property_schema_written</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">RTMeasurements::make_test_schema</span><span class="plain-syntax">(</span><span class="identifier-syntax">measurement_definition</span><span class="plain-syntax"> *</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">T</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">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">property_schema_written</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">) &&</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">T</span><span class="plain-syntax"> == </span><span class="identifier-syntax">TEST_ATOM_TASK</span><span class="plain-syntax">)) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">i6_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><span class="identifier-syntax">AdjectiveMeanings::make_schema</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">headword_as_adjective</span><span class="plain-syntax">, </span><span class="identifier-syntax">TEST_ATOM_TASK</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Calculus::Schemas::modify</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="string-syntax">"%n(*1)"</span><span class="plain-syntax">, </span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">mdef_iname</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">property_schema_written</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax">}</span>
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<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">RTMeasurements::compile_test_functions</span><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="identifier-syntax">measurement_definition</span><span class="plain-syntax"> *</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER</span><span class="plain-syntax">(</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">, </span><span class="identifier-syntax">measurement_definition</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">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">property_schema_written</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Functions::begin</span><span class="plain-syntax">(</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">compilation_data</span><span class="plain-syntax">.</span><span class="element-syntax">mdef_iname</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">local_variable</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lv</span><span class="plain-syntax"> = </span><span class="identifier-syntax">LocalVariables::new_call_parameter</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Frames::current_stack_frame</span><span class="plain-syntax">(),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">AdjectiveMeaningDomains::get_kind</span><span class="plain-syntax">(</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">headword_as_adjective</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">var</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Lvalues::new_LOCAL_VARIABLE</span><span class="plain-syntax">(</span><span class="identifier-syntax">EMPTY_WORDING</span><span class="plain-syntax">, </span><span class="identifier-syntax">lv</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">evaluated_prop</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Lvalues::new_PROPERTY_VALUE</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Rvalues::from_property</span><span class="plain-syntax">(</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">prop</span><span class="plain-syntax">), </span><span class="identifier-syntax">var</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">parse_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val</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="function-syntax"><s-literal>(mdef-></span><span class="identifier-syntax">region_threshold_text</span><span class="plain-syntax">)) </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><span class="function-syntax"><<rp>></span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"literal unreadable"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">pcalc_prop</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prop</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Atoms::binary_PREDICATE_new</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Measurements::weak_comparison_bp</span><span class="plain-syntax">(</span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">region_shape</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Terms::new_constant</span><span class="plain-syntax">(</span><span class="identifier-syntax">evaluated_prop</span><span class="plain-syntax">),</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Terms::new_constant</span><span class="plain-syntax">(</span><span class="identifier-syntax">val</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">TypecheckPropositions::type_check</span><span class="plain-syntax">(</span><span class="identifier-syntax">prop</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">TypecheckPropositions::tc_problem_reporting</span><span class="plain-syntax">(</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">mdef</span><span class="plain-syntax">-></span><span class="identifier-syntax">region_threshold_text</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="string-syntax">"be giving the boundary of the definition"</span><span class="plain-syntax">)) == </span><span class="identifier-syntax">ALWAYS_MATCH</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::inv_primitive</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">(), </span><span class="identifier-syntax">IF_BIP</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="2-emt.html#SP2" class="function-link"><span class="function-syntax">Emit::down</span></a><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">CompilePropositions::to_test_as_condition</span><span class="plain-syntax">(</span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><span class="identifier-syntax">prop</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::code</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
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<span class="plain-syntax"> </span><a href="2-emt.html#SP2" class="function-link"><span class="function-syntax">Emit::down</span></a><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::rtrue</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
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<span class="plain-syntax"> </span><a href="2-emt.html#SP2" class="function-link"><span class="function-syntax">Emit::up</span></a><span class="plain-syntax">();</span>
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<span class="plain-syntax"> </span><a href="2-emt.html#SP2" class="function-link"><span class="function-syntax">Emit::up</span></a><span class="plain-syntax">();</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Produce::rfalse</span><span class="plain-syntax">(</span><a href="2-emt.html#SP1" class="function-link"><span class="function-syntax">Emit::tree</span></a><span class="plain-syntax">());</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">Functions::end</span><span class="plain-syntax">(</span><span class="identifier-syntax">save</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> }</span>
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<span class="plain-syntax">}</span>
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</pre>
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<ul class="endnotetexts"><li>The structure measurement_compilation_data is private to this section.</li></ul>
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