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<ul><li><a href="../index.html">home</a></li>
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<li><a href="../../../inweb/index.html">inweb</a></li>
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<li><a href="../../../intest/index.html">intest</a></li>
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<main role="main">
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<!--Weave of 'Producing Inter' generated by Inweb-->
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<div class="breadcrumbs">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../intern.html">Inter Modules</a></li><li><a href="index.html">building</a></li><li><a href="index.html#3">Chapter 3: Masonry</a></li><li><b>Producing Inter</b></li></ul></div>
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<p class="purpose">Convenient machinery for generating individual Inter instructions.</p>
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<ul class="toc"><li><a href="3-prd.html#SP3">§3. Code insertion points</a></li><li><a href="3-prd.html#SP8">§8. Levelling</a></li><li><a href="3-prd.html#SP12">§12. The current function</a></li><li><a href="3-prd.html#SP17">§17. Making material outside of functions</a></li><li><a href="3-prd.html#SP24">§24. Making the code inside function bodies</a></li></ul><hr class="tocbar">
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<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. </b>This section provides a necessarily miscellaneous API for generating Inter
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instructions: there are numerous different instructions, so there are many
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different functions here, but there are few real ideas.
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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">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">site_production_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="reserved-syntax">code_insertion_point</span><span class="plain-syntax"> </span><span class="identifier-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="constant-syntax">MAX_CIP_STACK_SIZE</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">cip_sp</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_bookmark</span><span class="plain-syntax"> </span><span class="identifier-syntax">function_body_start_bookmark</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_bookmark</span><span class="plain-syntax"> </span><span class="identifier-syntax">function_locals_bookmark</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_bookmark</span><span class="plain-syntax"> </span><span class="identifier-syntax">function_body_code_bookmark</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_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">current_inter_function</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">site_production_data</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure site_production_data is private to this section.</li></ul>
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<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b>The bookmarks here are meaningless unless a function is being compiled, and
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then they will be given explicit values, so it really doesn't matter what they
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are initialised to. But to avoid any doubt, they will be set to the root of <span class="extract"><span class="extract-syntax">I</span></span>,
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even though they will never be used in that state.
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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">Produce::clear_site_data</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">Produce::clear_site_data</span></span>:<br/>Building Module - <a href="1-bm.html#SP4">§4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">building_site</span><span class="plain-syntax"> *</span><span class="identifier-syntax">B</span><span class="plain-syntax"> = &(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_body_start_bookmark</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterBookmark::at_start_of_this_repository</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_locals_bookmark</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterBookmark::at_start_of_this_repository</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_body_code_bookmark</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterBookmark::at_start_of_this_repository</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">B</span><span class="plain-syntax">-></span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">current_inter_function</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. Code insertion points. </b>From the caller's point of view, the functions in this section just magically
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know where in the Inter tree we want to generate code. Such a position is
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called a <a href="3-prd.html#SP3" class="internal">code_insertion_point</a> or CIP, and we must maintain it carefully.
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We keep not just one but a stack of them, so that the caller can interrupt
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one compilation activity, start another, and then resume the original.
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</p>
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<p class="commentary">For <a href="../inform7/index.html" class="internal">inform7</a>, this stack in fact never exceeds size 2, i.e., that first
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interruption is never interrupted. If we ever need that, we can simply raise
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<span class="extract"><span class="extract-syntax">MAX_CIP_STACK_SIZE</span></span>.
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</p>
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<p class="commentary">Each CIP contains a further stack of "noted levels" — where certain code
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blocks, belonging to loop and conditional constructs, are placed. (Every Inter
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instruction has a level, meaning, its hierarchical depth within the code
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package: a level 3 instruction is three code blocks deep.) One of the easiest
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ways to get errors when generating Inter code is to lose track of these levels
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and generate instructions which are one level off; so, managing levels here
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makes the caller's life much easier.
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</p>
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<pre class="definitions code-font"><span class="definition-keyword">define</span> <span class="constant-syntax">MAX_CIP_STACK_SIZE</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">MAX_NESTED_NOTEWORTHY_LEVELS</span><span class="plain-syntax"> </span><span class="constant-syntax">256</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">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">code_insertion_point</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">inter_level</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">noted_levels</span><span class="plain-syntax">[</span><span class="constant-syntax">MAX_NESTED_NOTEWORTHY_LEVELS</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">noted_sp</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">level_error_occurred</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">insertion_bm</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> </span><span class="identifier-syntax">saved_bm</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">} </span><span class="reserved-syntax">code_insertion_point</span><span class="plain-syntax">;</span>
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</pre>
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<ul class="endnotetexts"><li>The structure code_insertion_point is private to this section.</li></ul>
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<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b>When a new CIP is generated with a new write position, it saves a bookmark
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holding the previous write position:
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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">Produce::push_new_code_position_saving</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">Produce::push_new_code_position_saving</span></span>:<br/><a href="3-prd.html#SP5">§5</a>, <a href="3-prd.html#SP12">§12</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">new_IBM</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> </span><span class="identifier-syntax">old_IBM</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> </span><span class="reserved-syntax">code_insertion_point</span><span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">.</span><span class="element-syntax">inter_level</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">int</span><span class="plain-syntax">) (</span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">new_IBM</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><span class="identifier-syntax">cip</span><span class="plain-syntax">.</span><span class="element-syntax">noted_sp</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><span class="identifier-syntax">cip</span><span class="plain-syntax">.</span><span class="element-syntax">level_error_occurred</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">cip</span><span class="plain-syntax">.</span><span class="element-syntax">insertion_bm</span><span class="plain-syntax"> = </span><span class="identifier-syntax">new_IBM</span><span class="plain-syntax">;</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">.</span><span class="element-syntax">saved_bm</span><span class="plain-syntax"> = </span><span class="identifier-syntax">old_IBM</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> >= </span><span class="constant-syntax">MAX_CIP_STACK_SIZE</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"CIP overflow"</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">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">++] = </span><span class="identifier-syntax">cip</span><span class="plain-syntax">;</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>That saved position is usually the current write position, so this function is
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convenient:
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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">Produce::push_new_code_position</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-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><a href="3-prd.html#SP4" class="function-link"><span class="function-syntax">Produce::push_new_code_position_saving</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterBookmark::snapshot</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)));</span>
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<span class="plain-syntax">}</span>
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</pre>
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<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b>And this reverts to the previous position:
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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">Produce::pop_code_position</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">Produce::pop_code_position</span></span>:<br/><a href="3-prd.html#SP15">§15</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> <= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"CIP underflow"</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">-1].</span><span class="element-syntax">level_error_occurred</span><span class="plain-syntax">) &&</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">problem_count</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">))</span>
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<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"levelling error in CIP"</span><span class="plain-syntax">);</span>
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<span class="plain-syntax"> </span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::set_at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="identifier-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">-1].</span><span class="element-syntax">saved_bm</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">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">--;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b>A bookmark for the current write position can now always be obtained thus:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::at</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">Produce::at</span></span>:<br/><a href="3-prd.html#SP24">§24</a>, <a href="3-prd.html#SP26">§26</a>, <a href="3-prd.html#SP27">§27</a>, <a href="3-prd.html#SP28">§28</a>, <a href="3-prd.html#SP29">§29</a>, <a href="3-prd.html#SP32">§32</a>, <a href="3-prd.html#SP34">§34</a>, <a href="3-prd.html#SP35">§35</a>, <a href="3-prd.html#SP37">§37</a>, <a href="3-prd.html#SP38">§38</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> <= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"CIP level accessed outside function"</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">-1].</span><span class="element-syntax">insertion_bm</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. Levelling. </b>As noted above, Inter instructions occur at "levels" which need to be kept track
|
|
of. This returns the level at the current write position:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::level</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">Produce::level</span></span>:<br/><a href="3-prd.html#SP9">§9</a>, <a href="3-prd.html#SP11">§11</a>, <a href="3-prd.html#SP24">§24</a>, <a href="3-prd.html#SP26">§26</a>, <a href="3-prd.html#SP27">§27</a>, <a href="3-prd.html#SP28">§28</a>, <a href="3-prd.html#SP29">§29</a>, <a href="3-prd.html#SP32">§32</a>, <a href="3-prd.html#SP34">§34</a>, <a href="3-prd.html#SP35">§35</a>, <a href="3-prd.html#SP37">§37</a>, <a href="3-prd.html#SP38">§38</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> <= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"CIP level accessed outside function"</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">-1].</span><span class="element-syntax">inter_level</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. </b><a href="3-prd.html#SP9" class="internal">Produce::down</a> is so called because it takes us one level deeper in the tree;
|
|
this increases the level by 1. Similarly, <a href="3-prd.html#SP9" class="internal">Produce::up</a> heads back up towards
|
|
the root, decreasing the level by 1. The caller should be careful to ensure that
|
|
calls to these functions exactly match each other: for each down there must be
|
|
a matching up.
|
|
</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">Produce::down</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">Produce::down</span></span>:<br/><a href="3-prd.html#SP25">§25</a><br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_1">§3.1.1</a>, <a href="2-eis.html#SP3_1_2">§3.1.2</a>, <a href="2-eis.html#SP3_1_3">§3.1.3</a>, <a href="2-eis.html#SP3_1_4">§3.1.4</a>, <a href="2-eis.html#SP3_1_6">§3.1.6</a>, <a href="2-eis.html#SP3_1_7">§3.1.7</a>, <a href="2-eis.html#SP3_1_9">§3.1.9</a>, <a href="2-eis.html#SP3_1_10">§3.1.10</a>, <a href="2-eis.html#SP3_1_11">§3.1.11</a>, <a href="2-eis.html#SP3_1_11_1">§3.1.11.1</a>, <a href="2-eis.html#SP3_1_12">§3.1.12</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP11" class="function-link"><span class="function-syntax">Produce::set_level</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">) + </span><span class="constant-syntax">1</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">Produce::up</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">Produce::up</span></span>:<br/><a href="3-prd.html#SP25">§25</a><br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_1">§3.1.1</a>, <a href="2-eis.html#SP3_1_2">§3.1.2</a>, <a href="2-eis.html#SP3_1_3">§3.1.3</a>, <a href="2-eis.html#SP3_1_4">§3.1.4</a>, <a href="2-eis.html#SP3_1_6">§3.1.6</a>, <a href="2-eis.html#SP3_1_7">§3.1.7</a>, <a href="2-eis.html#SP3_1_9">§3.1.9</a>, <a href="2-eis.html#SP3_1_10">§3.1.10</a>, <a href="2-eis.html#SP3_1_11">§3.1.11</a>, <a href="2-eis.html#SP3_1_11_1">§3.1.11.1</a>, <a href="2-eis.html#SP3_1_12">§3.1.12</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP11" class="function-link"><span class="function-syntax">Produce::set_level</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">) - </span><span class="constant-syntax">1</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 addition, the user can call the following to jump the level to some
|
|
position with respect to the currently code block being written. This should
|
|
only be used as a last resort when the level has unavoidably been lost track of,
|
|
e.g., when a schema has to compile a fragment of a code block missing its beginning
|
|
or end.
|
|
</p>
|
|
|
|
<p class="commentary">The levelling stack is automatically maintained. As new code blocks open (or,
|
|
more properly, as Inter primitives which take code blocks are generated), the
|
|
level is automatically pushed. When the current write level washes below these
|
|
levels, the code blocks in question must be finished, and the levels are popped
|
|
automatically from the stack.
|
|
</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">Produce::set_level_to_current_code_block_plus</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">Produce::set_level_to_current_code_block_plus</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP1_1">§1.1</a>, <a href="2-eis.html#SP3_1_4">§3.1.4</a>, <a href="2-eis.html#SP3_1_11">§3.1.11</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">delta</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> <= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"CIP level accessed outside routine"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">code_insertion_point</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cip</span><span class="plain-syntax"> = &(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">-1]);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</span><span class="plain-syntax"> <= </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">level_error_occurred</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</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">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP11" class="function-link"><span class="function-syntax">Produce::set_level</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_levels</span><span class="plain-syntax">[</span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</span><span class="plain-syntax">-1] + </span><span class="identifier-syntax">delta</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>§11. </b>Those public functions are powered by these private ones.
|
|
</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">Produce::note_level_of_newly_opening_code_block</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">Produce::note_level_of_newly_opening_code_block</span></span>:<br/><a href="3-prd.html#SP24">§24</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> <= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"CIP level accessed outside routine"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">code_insertion_point</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cip</span><span class="plain-syntax"> = &(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">-1]);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</span><span class="plain-syntax"> >= </span><span class="constant-syntax">MAX_NESTED_NOTEWORTHY_LEVELS</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_levels</span><span class="plain-syntax">[</span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</span><span class="plain-syntax">++] = </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</span></a><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">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::set_level</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">Produce::set_level</span></span>:<br/><a href="3-prd.html#SP9">§9</a>, <a href="3-prd.html#SP10">§10</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">N</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax"> <= </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"CIP level accessed outside function"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">code_insertion_point</span><span class="plain-syntax"> *</span><span class="identifier-syntax">cip</span><span class="plain-syntax"> = &(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_stack</span><span class="plain-syntax">[</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">cip_sp</span><span class="plain-syntax">-1]);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">N</span><span class="plain-syntax"> < </span><span class="constant-syntax">2</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">level_error_occurred</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">N</span><span class="plain-syntax"> = </span><span class="constant-syntax">2</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_levels</span><span class="plain-syntax">[</span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</span><span class="plain-syntax">-1] < </span><span class="identifier-syntax">N</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">cip</span><span class="plain-syntax">-></span><span class="element-syntax">noted_sp</span><span class="plain-syntax">--;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">cip</span><span class="plain-syntax">-></span><span class="element-syntax">inter_level</span><span class="plain-syntax"> = </span><span class="identifier-syntax">N</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP12" class="paragraph-anchor"></a><b>§12. The current function. </b>It is also convenient to have this section manage the business of constructing
|
|
standard function packages.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::function_body</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="reserved-syntax">packaging_state</span><span class="plain-syntax"> *</span><span class="identifier-syntax">save</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</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">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no inter repository"</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">save</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> *</span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><a href="1-pck.html#SP12" class="function-link"><span class="function-syntax">Packaging::enter_home_of</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">package_request</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax"> = </span><a href="1-in.html#SP8" class="function-link"><span class="function-syntax">InterNames::location</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">iname</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">R</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">R</span><span class="plain-syntax"> == </span><a href="1-ls.html#SP4" class="function-link"><span class="function-syntax">LargeScale::main_request</span></a><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">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"Routine outside of package: %n\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"routine outside of package"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> }</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">block_iname</span><span class="plain-syntax"> = </span><span class="identifier-syntax">iname</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> </span><span class="identifier-syntax">save_ib</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterBookmark::snapshot</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP16" class="function-link"><span class="function-syntax">Produce::set_function</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP22" class="function-link"><span class="function-syntax">Produce::make_and_set_package</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">block_iname</span><span class="plain-syntax">, </span><a href="1-ls.html#SP18" class="function-link"><span class="function-syntax">LargeScale::package_type</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">I</span><span class="string-syntax">"_code"</span><span class="plain-syntax">)));</span>
|
|
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CodeInstruction::new</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><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">int</span><span class="plain-syntax">) </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</span></a><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">)) + </span><span class="constant-syntax">1</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_body_start_bookmark</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterBookmark::shifted</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">IMMEDIATELY_AFTER_NODEPLACEMENT</span><span class="plain-syntax">);</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_locals_bookmark</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterBookmark::shifted</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">BEFORE_NODEPLACEMENT</span><span class="plain-syntax">);</span>
|
|
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_body_code_bookmark</span><span class="plain-syntax"> =</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterBookmark::snapshot</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">));</span>
|
|
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP4" class="function-link"><span class="function-syntax">Produce::push_new_code_position_saving</span></a><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="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_body_code_bookmark</span><span class="plain-syntax">), </span><span class="identifier-syntax">save_ib</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">current_inter_function</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP13" class="paragraph-anchor"></a><b>§13. </b>The caller can test whether a function is being made, and find its start
|
|
position if so:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::function_body_is_open</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">current_inter_function</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">TRUE</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">FALSE</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::function_body_start_bookmark</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</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">return</span><span class="plain-syntax"> &(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_body_start_bookmark</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP14" class="paragraph-anchor"></a><b>§14. </b>The following creates a local symbol, suitable for a local variable or a
|
|
label. Note that we return an <span class="extract"><span class="extract-syntax">inter_symbol</span></span>, not an iname: inames can never
|
|
refer to local resources like these.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::new_local_symbol</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">Produce::new_local_symbol</span></span>:<br/><a href="3-prd.html#SP36">§36</a>, <a href="3-prd.html#SP39">§39</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">name</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">InterSymbolsTable::create_with_unique_name</span><span class="plain-syntax">(</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterPackage::scope</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">current_inter_function</span><span class="plain-syntax">), </span><span class="identifier-syntax">name</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP15" class="paragraph-anchor"></a><b>§15. </b>When the caller has finished compiling the function body, she should call:
|
|
</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">Produce::end_function_body</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP16" class="function-link"><span class="function-syntax">Produce::set_function</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="plain-syntax"> </span><a href="3-prd.html#SP6" class="function-link"><span class="function-syntax">Produce::pop_code_position</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP16" class="paragraph-anchor"></a><b>§16. </b>If the caller doesn't want to use the mechanism above, and wants to make her
|
|
own damn packages, she can call the following: but should be careful to call
|
|
twice, first to set to the new function's package, then to reset it to <span class="extract"><span class="extract-syntax">NULL</span></span>.
|
|
</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">Produce::set_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">Produce::set_function</span></span>:<br/><a href="3-prd.html#SP12">§12</a>, <a href="3-prd.html#SP15">§15</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_package</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="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">current_inter_function</span><span class="plain-syntax"> = </span><span class="identifier-syntax">P</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP17" class="paragraph-anchor"></a><b>§17. Making material outside of functions. </b>That's enough of keeping track of things: from here on, the code in this section
|
|
will actually make some Inter. The lower-down APIs in <a href="../bytecode-module/index.html" class="internal">bytecode</a> only return
|
|
an <span class="extract"><span class="extract-syntax">inter_error_message</span></span> if something improper has been done; <a href="../inter/index.html" class="internal">inter</a> and
|
|
<a href="../inform7/index.html" class="internal">inform7</a>, when generating code on their own initiative, must never trigger
|
|
Inter errors. So we will guard against them, reacting with an immediate
|
|
internal error to halt the compiler if they occur.
|
|
</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">Produce::guard</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">Produce::guard</span></span>:<br/><a href="3-prd.html#SP12">§12</a>, <a href="3-prd.html#SP19">§19</a>, <a href="3-prd.html#SP20">§20</a>, <a href="3-prd.html#SP21">§21</a>, <a href="3-prd.html#SP22">§22</a>, <a href="3-prd.html#SP23">§23</a>, <a href="3-prd.html#SP24">§24</a>, <a href="3-prd.html#SP26">§26</a>, <a href="3-prd.html#SP27">§27</a>, <a href="3-prd.html#SP28">§28</a>, <a href="3-prd.html#SP29">§29</a>, <a href="3-prd.html#SP32">§32</a>, <a href="3-prd.html#SP34">§34</a>, <a href="3-prd.html#SP35">§35</a>, <a href="3-prd.html#SP37">§37</a>, <a href="3-prd.html#SP38">§38</a>, <a href="3-prd.html#SP39">§39</a><br/>Large-Scale Structure - <a href="1-ls.html#SP10">§10</a>, <a href="1-ls.html#SP17">§17</a>, <a href="1-ls.html#SP18">§18</a><br/>Inter Primitives - <a href="1-ip.html#SP14">§14</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_error_message</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ERR</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">ERR</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">problem_count</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterErrors::issue</span><span class="plain-syntax">(</span><span class="identifier-syntax">ERR</span><span class="plain-syntax">); </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"inter error"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP18" class="paragraph-anchor"></a><b>§18. </b>"Level" is an issue outside of functions, too. In general, material will be
|
|
generated either inside a package or at the root level. The following returns
|
|
the level for material being generated in this location — 0 for the root level,
|
|
or the baseline of the current package plus 1, if we're in a package.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::baseline</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">Produce::baseline</span></span>:<br/><a href="3-prd.html#SP4">§4</a>, <a href="3-prd.html#SP12">§12</a>, <a href="3-prd.html#SP19">§19</a>, <a href="3-prd.html#SP20">§20</a>, <a href="3-prd.html#SP21">§21</a>, <a href="3-prd.html#SP22">§22</a>, <a href="3-prd.html#SP39">§39</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_bookmark</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">if</span><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="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="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">pack</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterBookmark::package</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">pack</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</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">InterPackage::is_a_root_package</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</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">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">InterPackage::is_a_function_body</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</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">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">InterPackage::baseline</span><span class="plain-syntax">(</span><span class="identifier-syntax">InterPackage::parent</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">)) + </span><span class="constant-syntax">1</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">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">InterPackage::baseline</span><span class="plain-syntax">(</span><span class="identifier-syntax">pack</span><span class="plain-syntax">) + </span><span class="constant-syntax">1</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP19" class="paragraph-anchor"></a><b>§19. </b>Demonstrating both of these, some simple Inter instructions:
|
|
</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">Produce::nop</span><button class="popup" onclick="togglePopup('usagePopup15')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup15">Usage of <span class="code-font"><span class="function-syntax">Produce::nop</span></span>:<br/>Packaging - <a href="1-pck.html#SP9">§9</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP19" class="function-link"><span class="function-syntax">Produce::nop_at</span></a><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="constant-syntax">0</span><span class="plain-syntax">);</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">Produce::nop_at</span><button class="popup" onclick="togglePopup('usagePopup16')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup16">Usage of <span class="code-font"><span class="function-syntax">Produce::nop_at</span></span>:<br/>Packaging - <a href="1-pck.html#SP10">§10</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">delta</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">NopInstruction::new</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">) + </span><span class="identifier-syntax">delta</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">Produce::comment</span><button class="popup" onclick="togglePopup('usagePopup17')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup17">Usage of <span class="code-font"><span class="function-syntax">Produce::comment</span></span>:<br/>Large-Scale Structure - <a href="1-ls.html#SP19">§19</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">text</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax"> = </span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CommentInstruction::new</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">text</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">, </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">)));</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP20" class="paragraph-anchor"></a><b>§20. </b>Defining a constant with numerical value <span class="extract"><span class="extract-syntax">val</span></span>:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::numeric_constant</span><span class="plain-syntax">(</span><span class="identifier-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_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">con_iname</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><a href="1-pck.html#SP12" class="function-link"><span class="function-syntax">Packaging::enter_home_of</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">con_iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">con_s</span><span class="plain-syntax"> = </span><a href="1-in.html#SP9" class="function-link"><span class="function-syntax">InterNames::to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">con_iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax"> = </span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ConstantInstruction::new</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">con_s</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_type</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">), </span><span class="identifier-syntax">InterValuePairs::number</span><span class="plain-syntax">(</span><span class="identifier-syntax">val</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</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="plain-syntax"> </span><a href="1-pck.html#SP12" class="function-link"><span class="function-syntax">Packaging::exit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">save</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">con_iname</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP21" class="paragraph-anchor"></a><b>§21. </b>Defining a constant equal to the value of an already-existing symbol <span class="extract"><span class="extract-syntax">val_s</span></span>:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="reserved-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::symbol_constant</span><span class="plain-syntax">(</span><span class="identifier-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_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">con_iname</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val_s</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">packaging_state</span><span class="plain-syntax"> </span><span class="identifier-syntax">save</span><span class="plain-syntax"> = </span><a href="1-pck.html#SP12" class="function-link"><span class="function-syntax">Packaging::enter_home_of</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">con_iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax"> = </span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><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">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">con_s</span><span class="plain-syntax"> = </span><a href="1-in.html#SP9" class="function-link"><span class="function-syntax">InterNames::to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">con_iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterValuePairs::symbolic</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">val_s</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ConstantInstruction::new</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">con_s</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_type</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">), </span><span class="identifier-syntax">val</span><span class="plain-syntax">, </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</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="plain-syntax"> </span><a href="1-pck.html#SP12" class="function-link"><span class="function-syntax">Packaging::exit</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">save</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">con_iname</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP22" class="paragraph-anchor"></a><b>§22. </b>Note that this function does two things: creates a new package at the current
|
|
write position, and then shifts the write position into that new package:
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::make_and_set_package</span><button class="popup" onclick="togglePopup('usagePopup18')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup18">Usage of <span class="code-font"><span class="function-syntax">Produce::make_and_set_package</span></span>:<br/><a href="3-prd.html#SP12">§12</a><br/>Packaging - <a href="1-pck.html#SP13">§13</a></span></button><span class="plain-syntax">(</span><span class="identifier-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_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ptype</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</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">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">textual_name</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">textual_name</span><span class="plain-syntax">, </span><span class="string-syntax">"%n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">PackageInstruction::new</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">textual_name</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterTypes::unchecked</span><span class="plain-syntax">(), </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">ptype</span><span class="plain-syntax">, </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</span></a><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</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">P</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">textual_name</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">InterBookmark::move_into_package</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</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="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="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP23" class="paragraph-anchor"></a><b>§23. </b>We make a new package and return it; but note the <span class="extract"><span class="extract-syntax">+1</span></span> here — the package
|
|
is created at the level below that in <span class="extract"><span class="extract-syntax">IBM</span></span>.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::make_subpackage</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</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">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">ptype</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_package</span><span class="plain-syntax"> *</span><span class="identifier-syntax">P</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">PackageInstruction::new</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">name</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterTypes::unchecked</span><span class="plain-syntax">(), </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">ptype</span><span class="plain-syntax">, (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">InterBookmark::baseline</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">) + </span><span class="constant-syntax">1</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</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">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">P</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP24" class="paragraph-anchor"></a><b>§24. Making the code inside function bodies. </b>We begin with invocations: usages of the <span class="extract"><span class="extract-syntax">inv</span></span> instruction. This of course has
|
|
three uses. First, primitives:
|
|
</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">Produce::inv_primitive</span><button class="popup" onclick="togglePopup('usagePopup19')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup19">Usage of <span class="code-font"><span class="function-syntax">Produce::inv_primitive</span></span>:<br/><a href="3-prd.html#SP25">§25</a>, <a href="3-prd.html#SP28">§28</a><br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_2_2">§3.1.2.2</a>, <a href="2-eis.html#SP3_1_3">§3.1.3</a>, <a href="2-eis.html#SP3_1_6">§3.1.6</a>, <a href="2-eis.html#SP3_1_7">§3.1.7</a>, <a href="2-eis.html#SP3_1_9">§3.1.9</a>, <a href="2-eis.html#SP3_1_10">§3.1.10</a>, <a href="2-eis.html#SP3_1_11">§3.1.11</a>, <a href="2-eis.html#SP3_1_12">§3.1.12</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_ti</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">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">prim_symb</span><span class="plain-syntax"> = </span><a href="1-ip.html#SP16" class="function-link"><span class="function-syntax">Primitives::from_BIP</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">bip</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><a href="1-ip.html#SP11" class="function-link"><span class="function-syntax">Primitives::takes_code_blocks</span></a><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">bip</span><span class="plain-syntax"> != </span><span class="constant-syntax">CASE_BIP</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">bip</span><span class="plain-syntax"> != </span><span class="constant-syntax">DEFAULT_BIP</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP11" class="function-link"><span class="function-syntax">Produce::note_level_of_newly_opening_code_block</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">InvInstruction::new_primitive</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">),</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">prim_symb</span><span class="plain-syntax">, (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP25" class="paragraph-anchor"></a><b>§25. </b>These occur often enough to be worth defining here:
|
|
</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">Produce::rtrue</span><button class="popup" onclick="togglePopup('usagePopup20')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup20">Usage of <span class="code-font"><span class="function-syntax">Produce::rtrue</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7">§3.1.7</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP24" class="function-link"><span class="function-syntax">Produce::inv_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">RETURN_BIP</span><span class="plain-syntax">);</span>
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|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::down</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::number</span><span class="plain-syntax">(1)); </span><span class="comment-syntax"> that is, return "true"</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::up</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</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">Produce::rfalse</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP24" class="function-link"><span class="function-syntax">Produce::inv_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">RETURN_BIP</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::down</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::number</span><span class="plain-syntax">(0)); </span><span class="comment-syntax"> that is, return "false"</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::up</span></a><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">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::push</span><span class="plain-syntax">(</span><span class="identifier-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_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP24" class="function-link"><span class="function-syntax">Produce::inv_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">PUSH_BIP</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::down</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP30" class="function-link"><span class="function-syntax">Produce::val_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::up</span></a><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">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::pull</span><span class="plain-syntax">(</span><span class="identifier-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_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP24" class="function-link"><span class="function-syntax">Produce::inv_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="constant-syntax">PULL_BIP</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::down</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP34" class="function-link"><span class="function-syntax">Produce::ref_iname</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">iname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP9" class="function-link"><span class="function-syntax">Produce::up</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP26" class="paragraph-anchor"></a><b>§26. </b>Assembly language:
|
|
</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">Produce::inv_assembly</span><button class="popup" onclick="togglePopup('usagePopup21')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup21">Usage of <span class="code-font"><span class="function-syntax">Produce::inv_assembly</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_1">§3.1.1</a>, <a href="2-eis.html#SP3_1_11">§3.1.11</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">opcode</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">InvInstruction::new_assembly</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">opcode</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP27" class="paragraph-anchor"></a><b>§27. </b>The "assembly marker" punctuation can be placed thus:
|
|
</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">Produce::assembly_marker</span><button class="popup" onclick="togglePopup('usagePopup22')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup22">Usage of <span class="code-font"><span class="function-syntax">Produce::assembly_marker</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">which</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">AssemblyInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">which</span><span class="plain-syntax">, (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP28" class="paragraph-anchor"></a><b>§28. </b>Function calls:
|
|
</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">Produce::inv_call_symbol</span><button class="popup" onclick="togglePopup('usagePopup23')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup23">Usage of <span class="code-font"><span class="function-syntax">Produce::inv_call_symbol</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_2_2">§3.1.2.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">fn_s</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">InvInstruction::new_function_call</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">fn_s</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::inv_call_iname</span><span class="plain-syntax">(</span><span class="identifier-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_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">fn_iname</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP28" class="function-link"><span class="function-syntax">Produce::inv_call_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><a href="1-in.html#SP9" class="function-link"><span class="function-syntax">InterNames::to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">fn_iname</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">Produce::inv_indirect_call</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">arity</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP24" class="function-link"><span class="function-syntax">Produce::inv_primitive</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><a href="1-ip.html#SP7" class="function-link"><span class="function-syntax">Primitives::BIP_for_indirect_call_returning_value</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">arity</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP29" class="paragraph-anchor"></a><b>§29. </b>Instructions for changing the primitive category:
|
|
</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">Produce::code</span><button class="popup" onclick="togglePopup('usagePopup24')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup24">Usage of <span class="code-font"><span class="function-syntax">Produce::code</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_4">§3.1.4</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CodeInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::evaluation</span><button class="popup" onclick="togglePopup('usagePopup25')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup25">Usage of <span class="code-font"><span class="function-syntax">Produce::evaluation</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7">§3.1.7</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">EvaluationInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::reference</span><button class="popup" onclick="togglePopup('usagePopup26')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup26">Usage of <span class="code-font"><span class="function-syntax">Produce::reference</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7">§3.1.7</a>, <a href="2-eis.html#SP3_1_10">§3.1.10</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ReferenceInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP30" class="paragraph-anchor"></a><b>§30. </b>The <span class="extract"><span class="extract-syntax">val</span></span> instruction. First, we can take the value of something identified
|
|
by an iname:
|
|
</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">Produce::val_iname</span><button class="popup" onclick="togglePopup('usagePopup27')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup27">Usage of <span class="code-font"><span class="function-syntax">Produce::val_iname</span></span>:<br/><a href="3-prd.html#SP25">§25</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</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">iname</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">problem_count</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no iname"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::number</span><span class="plain-syntax">(0)); </span><span class="comment-syntax"> for error recovery</span>
|
|
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP31" class="function-link"><span class="function-syntax">Produce::val_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><a href="1-in.html#SP9" class="function-link"><span class="function-syntax">InterNames::to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">iname</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP31" class="paragraph-anchor"></a><b>§31. </b>But that essentially reduces to this, taking the value of a symbol:
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|
</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">Produce::val_symbol</span><button class="popup" onclick="togglePopup('usagePopup28')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup28">Usage of <span class="code-font"><span class="function-syntax">Produce::val_symbol</span></span>:<br/><a href="3-prd.html#SP30">§30</a><br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a>, <a href="2-eis.html#SP3_1_10_2">§3.1.10.2</a>, <a href="2-eis.html#SP3_1_11_1">§3.1.11.1</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">s</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterValuePairs::symbolic</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">s</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">val</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP32" class="paragraph-anchor"></a><b>§32. </b>Which in turn falls into this, the general case: a value specified by an
|
|
Inter pair —
|
|
</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">Produce::val</span><button class="popup" onclick="togglePopup('usagePopup29')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup29">Usage of <span class="code-font"><span class="function-syntax">Produce::val</span></span>:<br/><a href="3-prd.html#SP25">§25</a>, <a href="3-prd.html#SP30">§30</a>, <a href="3-prd.html#SP31">§31</a>, <a href="3-prd.html#SP33">§33</a><br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_6">§3.1.6</a>, <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a><br/>Value Holsters - <a href="3-vh.html#SP6">§6</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">K</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">K</span><span class="plain-syntax"> != </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">val_kind</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</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">val_kind</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no kind for val"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">ValInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">InterTypes::from_type_name</span><span class="plain-syntax">(</span><span class="identifier-syntax">val_kind</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</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>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP33" class="paragraph-anchor"></a><b>§33. </b>There remain some convenience functions for making such pairs.
|
|
</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">Produce::val_nothing</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::number</span><span class="plain-syntax">(0));</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::val_text</span><button class="popup" onclick="togglePopup('usagePopup30')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup30">Usage of <span class="code-font"><span class="function-syntax">Produce::val_text</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::from_text</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::val_char</span><button class="popup" onclick="togglePopup('usagePopup31')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup31">Usage of <span class="code-font"><span class="function-syntax">Produce::val_char</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">wchar_t</span><span class="plain-syntax"> </span><span class="identifier-syntax">c</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::number</span><span class="plain-syntax">((</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><span class="identifier-syntax">c</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">Produce::val_real</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="reserved-syntax">double</span><span class="plain-syntax"> </span><span class="identifier-syntax">g</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::real</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">g</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">Produce::val_real_from_text</span><button class="popup" onclick="togglePopup('usagePopup32')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup32">Usage of <span class="code-font"><span class="function-syntax">Produce::val_real_from_text</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::real_from_I6_notation</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::val_dword</span><button class="popup" onclick="togglePopup('usagePopup33')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup33">Usage of <span class="code-font"><span class="function-syntax">Produce::val_dword</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP32" class="function-link"><span class="function-syntax">Produce::val</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">, </span><span class="identifier-syntax">InterValuePairs::from_singular_dword</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">S</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP34" class="paragraph-anchor"></a><b>§34. </b>The <span class="extract"><span class="extract-syntax">ref</span></span> instruction is simpler. It makes no sense to have a storage reference
|
|
to a constant, so we only ever need to refer to inames or their symbols:
|
|
</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">Produce::ref_iname</span><button class="popup" onclick="togglePopup('usagePopup34')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup34">Usage of <span class="code-font"><span class="function-syntax">Produce::ref_iname</span></span>:<br/><a href="3-prd.html#SP25">§25</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">iname</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP34" class="function-link"><span class="function-syntax">Produce::ref_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><a href="1-in.html#SP9" class="function-link"><span class="function-syntax">InterNames::to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">iname</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">Produce::ref_symbol</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">s</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_pair</span><span class="plain-syntax"> </span><span class="identifier-syntax">val</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterValuePairs::symbolic</span><span class="plain-syntax">(</span><a href="1-pck.html#SP7" class="function-link"><span class="function-syntax">Packaging::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">s</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">val_kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">K</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">K</span><span class="plain-syntax"> != </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">)) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">val_kind</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</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">val_kind</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"no kind for ref"</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">RefInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">InterTypes::from_type_name</span><span class="plain-syntax">(</span><span class="identifier-syntax">val_kind</span><span class="plain-syntax">),</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</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>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP35" class="paragraph-anchor"></a><b>§35. </b><span class="extract"><span class="extract-syntax">cast</span></span> may yet disappear from Inter: it doesn't really accomplish anything at
|
|
present, and is more of a placeholder than anything else.
|
|
</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">Produce::cast</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">F</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">T</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_type</span><span class="plain-syntax"> </span><span class="identifier-syntax">F_t</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_type</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">F</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_type</span><span class="plain-syntax"> </span><span class="identifier-syntax">T_t</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_type</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">T</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CastInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">F_t</span><span class="plain-syntax">, </span><span class="identifier-syntax">T_t</span><span class="plain-syntax">,</span>
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<span class="plain-syntax"> (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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>
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|
<span class="plain-syntax">}</span>
|
|
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|
<span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::kind_to_symbol</span><button class="popup" onclick="togglePopup('usagePopup35')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup35">Usage of <span class="code-font"><span class="function-syntax">Produce::kind_to_symbol</span></span>:<br/><a href="3-prd.html#SP32">§32</a>, <a href="3-prd.html#SP34">§34</a>, <a href="3-prd.html#SP39">§39</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</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">K</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) || (</span><span class="identifier-syntax">K</span><span class="plain-syntax"> == </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
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|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="1-in.html#SP9" class="function-link"><span class="function-syntax">InterNames::to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">RTKindDeclarations::iname</span><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">));</span>
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<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
|
|
<span class="plain-syntax"> #</span><span class="identifier-syntax">ifndef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</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><span class="identifier-syntax">endif</span>
|
|
<span class="plain-syntax">}</span>
|
|
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|
<span class="identifier-syntax">inter_type</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::kind_to_type</span><button class="popup" onclick="togglePopup('usagePopup36')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup36">Usage of <span class="code-font"><span class="function-syntax">Produce::kind_to_type</span></span>:<br/><a href="3-prd.html#SP20">§20</a>, <a href="3-prd.html#SP21">§21</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_type</span><span class="plain-syntax"> </span><span class="identifier-syntax">type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterTypes::unchecked</span><span class="plain-syntax">();</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">S</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">S</span><span class="plain-syntax">) </span><span class="identifier-syntax">type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterTypes::from_type_name</span><span class="plain-syntax">(</span><span class="identifier-syntax">S</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">type</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
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|
<span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="function-syntax">Produce::kind_to_TID</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_type</span><span class="plain-syntax"> </span><span class="identifier-syntax">type</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_type</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</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">InterTypes::to_TID_at</span><span class="plain-syntax">(</span><span class="identifier-syntax">IBM</span><span class="plain-syntax">, </span><span class="identifier-syntax">type</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP36" class="paragraph-anchor"></a><b>§36. </b>The following reserves a label, that is, declares that a given name will be
|
|
that of a label in the function currently being constructed.
|
|
</p>
|
|
|
|
<p class="commentary">Label names must begin with a <span class="extract"><span class="extract-syntax">.</span></span>, and we enforce that here.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::reserve_label</span><button class="popup" onclick="togglePopup('usagePopup37')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup37">Usage of <span class="code-font"><span class="function-syntax">Produce::reserve_label</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a>, <a href="2-eis.html#SP3_1_8">§3.1.8</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lname</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">Str::get_first_char</span><span class="plain-syntax">(</span><span class="identifier-syntax">lname</span><span class="plain-syntax">) != </span><span class="character-syntax">'.'</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">TEMPORARY_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">dotted</span><span class="plain-syntax">)</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">dotted</span><span class="plain-syntax">, </span><span class="string-syntax">".%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">lname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lab_name</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP36" class="function-link"><span class="function-syntax">Produce::reserve_label</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">dotted</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">DISCARD_TEXT</span><span class="plain-syntax">(</span><span class="identifier-syntax">dotted</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">lab_name</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> }</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lab_name</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP39" class="function-link"><span class="function-syntax">Produce::local_exists</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">lname</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">lab_name</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">lab_name</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">lab_name</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP14" class="function-link"><span class="function-syntax">Produce::new_local_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">lname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterSymbol::make_label</span><span class="plain-syntax">(</span><span class="identifier-syntax">lab_name</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">lab_name</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP37" class="paragraph-anchor"></a><b>§37. </b>This places the label at the current write position:
|
|
</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">Produce::place_label</span><button class="popup" onclick="togglePopup('usagePopup38')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup38">Usage of <span class="code-font"><span class="function-syntax">Produce::place_label</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_8">§3.1.8</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lab_name</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">LabelInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">lab_name</span><span class="plain-syntax">, (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP38" class="paragraph-anchor"></a><b>§38. </b>And here we make a <span class="extract"><span class="extract-syntax">lab</span></span> instruction, suitable for a jump instruction to use.
|
|
</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">Produce::lab</span><button class="popup" onclick="togglePopup('usagePopup39')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup39">Usage of <span class="code-font"><span class="function-syntax">Produce::lab</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">L</span><span class="plain-syntax">) {</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">LabInstruction::new</span><span class="plain-syntax">(</span><a href="3-prd.html#SP7" class="function-link"><span class="function-syntax">Produce::at</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">), </span><span class="identifier-syntax">L</span><span class="plain-syntax">, (</span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax">) </span><a href="3-prd.html#SP8" class="function-link"><span class="function-syntax">Produce::level</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="plain-syntax">}</span>
|
|
</pre>
|
|
<p class="commentary firstcommentary"><a id="SP39" class="paragraph-anchor"></a><b>§39. </b>Now for local variables.
|
|
</p>
|
|
|
|
<p class="commentary">Note that this function is not intended as the way high-level code in <a href="../inform7/index.html" class="internal">inform7</a>
|
|
should create a local variable: see <a href="../imperative-module/3-lv.html" class="internal">Local Variables (in imperative)</a> for that.
|
|
This function is at a lower level — it does the necessary Inter business, but
|
|
doesn't add the name tp the current stack frame in <a href="../inform7/index.html" class="internal">inform7</a>.
|
|
</p>
|
|
|
|
<pre class="displayed-code all-displayed-code code-font">
|
|
<span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::local</span><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> *</span><span class="identifier-syntax">K</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lname</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">comm</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">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">current_inter_function</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">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"local variable emitted outside function"</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">K</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">K</span><span class="plain-syntax"> = </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="identifier-syntax">local_s</span><span class="plain-syntax"> = </span><a href="3-prd.html#SP14" class="function-link"><span class="function-syntax">Produce::new_local_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">lname</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterSymbol::make_local</span><span class="plain-syntax">(</span><span class="identifier-syntax">local_s</span><span class="plain-syntax">);</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_bookmark</span><span class="plain-syntax"> *</span><span class="identifier-syntax">locals_at</span><span class="plain-syntax"> = &(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">function_locals_bookmark</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">comm</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">Str::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">comm</span><span class="plain-syntax">) > </span><span class="constant-syntax">0</span><span class="plain-syntax">))</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">CommentInstruction::new</span><span class="plain-syntax">(</span><span class="identifier-syntax">locals_at</span><span class="plain-syntax">, </span><span class="identifier-syntax">comm</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">locals_at</span><span class="plain-syntax">) + </span><span class="constant-syntax">1</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_type</span><span class="plain-syntax"> </span><span class="identifier-syntax">type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterTypes::unchecked</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">K</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">K</span><span class="plain-syntax"> != </span><span class="identifier-syntax">K_value</span><span class="plain-syntax">)) </span><span class="identifier-syntax">type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">InterTypes::from_type_name</span><span class="plain-syntax">(</span><a href="3-prd.html#SP35" class="function-link"><span class="function-syntax">Produce::kind_to_symbol</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">K</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP17" class="function-link"><span class="function-syntax">Produce::guard</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">LocalInstruction::new</span><span class="plain-syntax">(</span><span class="identifier-syntax">locals_at</span><span class="plain-syntax">, </span><span class="identifier-syntax">local_s</span><span class="plain-syntax">, </span><span class="identifier-syntax">type</span><span class="plain-syntax">,</span>
|
|
<span class="plain-syntax"> </span><a href="3-prd.html#SP18" class="function-link"><span class="function-syntax">Produce::baseline</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">locals_at</span><span class="plain-syntax">) + </span><span class="constant-syntax">1</span><span class="plain-syntax">, </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">));</span>
|
|
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">local_s</span><span class="plain-syntax">;</span>
|
|
<span class="plain-syntax">}</span>
|
|
|
|
<span class="identifier-syntax">inter_symbol</span><span class="plain-syntax"> *</span><span class="function-syntax">Produce::local_exists</span><button class="popup" onclick="togglePopup('usagePopup40')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup40">Usage of <span class="code-font"><span class="function-syntax">Produce::local_exists</span></span>:<br/><a href="3-prd.html#SP36">§36</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">inter_tree</span><span class="plain-syntax"> *</span><span class="identifier-syntax">I</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">lname</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">InterSymbolsTable::symbol_from_name</span><span class="plain-syntax">(</span>
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|
<span class="plain-syntax"> </span><span class="identifier-syntax">InterPackage::scope</span><span class="plain-syntax">(</span><span class="identifier-syntax">I</span><span class="plain-syntax">-></span><span class="identifier-syntax">site</span><span class="plain-syntax">.</span><span class="element-syntax">sprdata</span><span class="plain-syntax">.</span><span class="element-syntax">current_inter_function</span><span class="plain-syntax">), </span><span class="identifier-syntax">lname</span><span class="plain-syntax">);</span>
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<span class="plain-syntax">}</span>
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</pre>
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