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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../extensions.html">Kits</a></li><li><a href="index.html">BasicInformKit</a></li><li><b>Combinations Template</b></li></ul></div>
<p class="purpose">Code to support the combination kind of value constructor.</p>
<ul class="toc"><li><a href="S-cmb.html#SP1">&#167;1. Block Format</a></li><li><a href="S-cmb.html#SP2">&#167;2. KOV Support</a></li><li><a href="S-cmb.html#SP3">&#167;3. Creation</a></li><li><a href="S-cmb.html#SP4">&#167;4. Destruction</a></li><li><a href="S-cmb.html#SP5">&#167;5. Copying</a></li><li><a href="S-cmb.html#SP6">&#167;6. Comparison</a></li><li><a href="S-cmb.html#SP7">&#167;7. Hashing</a></li><li><a href="S-cmb.html#SP8">&#167;8. Printing</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>&#167;1. Block Format. </b>A combination is like a list, but simpler; it has a fixed, usually short,
size. On the other hand, its entries are not all of the same kind as each
other.
</p>
<p class="commentary">The short block for a combination is simply a pointer to the long block.
This consists of one word to hold the strong kind ID, and then one word
for each entry in the combination. Thus, a triple combination uses 4 words.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">Constant</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">; </span><span class="comment-syntax">Strong kind ID</span>
<span class="reserved-syntax">Constant</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax"> = </span><span class="constant-syntax">1</span><span class="plain-syntax">; </span><span class="comment-syntax">List items begin at this entry</span>
</pre>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>&#167;2. KOV Support. </b>See the "BlockValues.i6t" segment for the specification of the following
routines.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Support</span><span class="plain-syntax"> </span><span class="identifier-syntax">task</span><span class="plain-syntax"> </span><span class="identifier-syntax">arg1</span><span class="plain-syntax"> </span><span class="identifier-syntax">arg2</span><span class="plain-syntax"> </span><span class="identifier-syntax">arg3</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax">(</span><span class="identifier-syntax">task</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CREATE_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMBINATION_TY_Create</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">, </span><span class="identifier-syntax">arg2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DESTROY_KOVS</span><span class="plain-syntax">: </span><span class="identifier-syntax">COMBINATION_TY_Destroy</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">MAKEMUTABLE_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</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">COPYKIND_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMBINATION_TY_CopyKind</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">, </span><span class="identifier-syntax">arg2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">COPYQUICK_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">rtrue</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">COPYSB_KOVS</span><span class="plain-syntax">: </span><span class="identifier-syntax">BlkValueCopySB1</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">, </span><span class="identifier-syntax">arg2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">KINDDATA_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMBINATION_TY_KindData</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">EXTENT_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</span><span class="plain-syntax"> -1;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">COPY_KOVS</span><span class="plain-syntax">: </span><span class="identifier-syntax">COMBINATION_TY_Copy</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">, </span><span class="identifier-syntax">arg2</span><span class="plain-syntax">, </span><span class="identifier-syntax">arg3</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">COMPARE_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMBINATION_TY_Compare</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">, </span><span class="identifier-syntax">arg2</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">HASH_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMBINATION_TY_Hash</span><span class="plain-syntax">(</span><span class="identifier-syntax">arg1</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">DEBUG_KOVS</span><span class="plain-syntax">: </span><span class="reserved-syntax">print</span><span class="plain-syntax"> </span><span class="string-syntax">" = "</span><span class="plain-syntax">, (</span><span class="identifier-syntax">COMBINATION_TY_Say</span><span class="plain-syntax">) </span><span class="identifier-syntax">arg1</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="comment-syntax">We choose not to respond to: CAST_KOVS, READ_FILE_KOVS, WRITE_FILE_KOVS</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">rfalse</span><span class="plain-syntax">;</span>
<span class="plain-syntax">];</span>
</pre>
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>&#167;3. Creation. </b>A combination is like a list, but simpler; it has a fixed, usually short,
size. On the other hand, its entries are not all of the same kind as each
other.
</p>
<p class="commentary">Combinations are stored as a fixed-sized block of word entries. The first
block is the only header information: a pointer to a further structure in
memory, describing the kind. The subsequent blocks are the actual records.
Thus, a triple \((x, y, z)\) uses 4 words.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Create</span><span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">sb</span><span class="plain-syntax"> </span><span class="identifier-syntax">long_block</span><span class="plain-syntax"> </span><span class="identifier-syntax">N</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax"> </span><span class="identifier-syntax">v</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">N</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseArity</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">long_block</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FlexAllocate</span><span class="plain-syntax">(</span>
<span class="plain-syntax"> (</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">+</span><span class="identifier-syntax">N</span><span class="plain-syntax">)*</span><span class="identifier-syntax">WORDSIZE</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_TY</span><span class="plain-syntax">, </span><span class="identifier-syntax">BLK_FLAG_WORD</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueWrite</span><span class="plain-syntax">(</span><span class="identifier-syntax">long_block</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">, </span><span class="identifier-syntax">kind</span><span class="plain-syntax">, </span><span class="reserved-syntax">true</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">i</span><span class="plain-syntax">=0: </span><span class="identifier-syntax">i</span><span class="plain-syntax">&lt;</span><span class="identifier-syntax">N</span><span class="plain-syntax">: </span><span class="identifier-syntax">i</span><span class="plain-syntax">++) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseTerm</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</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">KOVIsBlockValue</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">)) </span><span class="identifier-syntax">v</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueCreate</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">v</span><span class="plain-syntax"> = </span><span class="identifier-syntax">DefaultValueOfKOV</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueWrite</span><span class="plain-syntax">(</span><span class="identifier-syntax">long_block</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">+</span><span class="identifier-syntax">i</span><span class="plain-syntax">, </span><span class="identifier-syntax">v</span><span class="plain-syntax">, </span><span class="reserved-syntax">true</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueCreateSB1</span><span class="plain-syntax">(</span><span class="identifier-syntax">sb</span><span class="plain-syntax">, </span><span class="identifier-syntax">long_block</span><span class="plain-syntax">);</span>
<span class="plain-syntax">];</span>
</pre>
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>&#167;4. Destruction. </b>If the comb items are themselves block-values, they must all be freed before
the comb itself can be freed.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Destroy</span><span class="plain-syntax"> </span><span class="identifier-syntax">comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseArity</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">i</span><span class="plain-syntax">=0: </span><span class="identifier-syntax">i</span><span class="plain-syntax">&lt;</span><span class="identifier-syntax">no_items</span><span class="plain-syntax">: </span><span class="identifier-syntax">i</span><span class="plain-syntax">++) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseTerm</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</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">KOVIsBlockValue</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueFree</span><span class="plain-syntax">(</span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">];</span>
</pre>
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>&#167;5. Copying. </b>Again, if the comb contains block-values then they must be duplicated rather
than bitwise copied as pointers.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_CopyKind</span><span class="plain-syntax"> </span><span class="reserved-syntax">to</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueWrite</span><span class="plain-syntax">(</span><span class="reserved-syntax">to</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">, </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">from</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">));</span>
<span class="plain-syntax">];</span>
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_CopySB</span><span class="plain-syntax"> </span><span class="reserved-syntax">to</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueCopySB1</span><span class="plain-syntax">(</span><span class="reserved-syntax">to</span><span class="plain-syntax">, </span><span class="identifier-syntax">from</span><span class="plain-syntax">);</span>
<span class="plain-syntax">];</span>
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_KindData</span><span class="plain-syntax"> </span><span class="identifier-syntax">comb</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">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">);</span>
<span class="plain-syntax">];</span>
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Copy</span><span class="plain-syntax"> </span><span class="identifier-syntax">to_comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">from_comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">precopied_comb_kov</span><span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax"> </span><span class="identifier-syntax">nv</span><span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="comment-syntax">kind = BlkValueRead(to_comb, COMBINATION_KIND_F);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseArity</span><span class="plain-syntax">(</span><span class="identifier-syntax">precopied_comb_kov</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueWrite</span><span class="plain-syntax">(</span><span class="identifier-syntax">to_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">, </span><span class="identifier-syntax">precopied_comb_kov</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">i</span><span class="plain-syntax">=0: </span><span class="identifier-syntax">i</span><span class="plain-syntax">&lt;</span><span class="identifier-syntax">no_items</span><span class="plain-syntax">: </span><span class="identifier-syntax">i</span><span class="plain-syntax">++) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseTerm</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</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">KOVIsBlockValue</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">nv</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueCreate</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueCopy</span><span class="plain-syntax">(</span><span class="identifier-syntax">nv</span><span class="plain-syntax">, </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">from_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueWrite</span><span class="plain-syntax">(</span><span class="identifier-syntax">to_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">, </span><span class="identifier-syntax">nv</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">];</span>
</pre>
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>&#167;6. Comparison. </b>This is a lexicographic comparison and assumes both combinations have the
same kind.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Compare</span><span class="plain-syntax"> </span><span class="identifier-syntax">left_comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">right_comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">delta</span><span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax"> </span><span class="identifier-syntax">cf</span><span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">left_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseArity</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">i</span><span class="plain-syntax">=0: </span><span class="identifier-syntax">i</span><span class="plain-syntax">&lt;</span><span class="identifier-syntax">no_items</span><span class="plain-syntax">: </span><span class="identifier-syntax">i</span><span class="plain-syntax">++) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseTerm</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">cf</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KOVComparisonFunction</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</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">cf</span><span class="plain-syntax"> == </span><span class="constant-syntax">0</span><span class="plain-syntax"> </span><span class="reserved-syntax">or</span><span class="plain-syntax"> </span><span class="identifier-syntax">UnsignedCompare</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">delta</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">left_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">) -</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">right_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</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">delta</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</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">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">delta</span><span class="plain-syntax"> = </span><span class="identifier-syntax">cf</span><span class="plain-syntax">(</span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">left_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">),</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">right_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</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">delta</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">delta</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">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="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Distinguish</span><span class="plain-syntax"> </span><span class="identifier-syntax">left_comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">right_comb</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">COMBINATION_TY_Compare</span><span class="plain-syntax">(</span><span class="identifier-syntax">left_comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">right_comb</span><span class="plain-syntax">) == </span><span class="constant-syntax">0</span><span class="plain-syntax">) </span><span class="reserved-syntax">rfalse</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">rtrue</span><span class="plain-syntax">;</span>
<span class="plain-syntax">];</span>
</pre>
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>&#167;7. Hashing. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Hash</span><span class="plain-syntax"> </span><span class="identifier-syntax">comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">kind</span><span class="plain-syntax"> </span><span class="identifier-syntax">rv</span><span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> </span><span class="identifier-syntax">i</span><span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">rv</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">kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseArity</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">i</span><span class="plain-syntax">=0: </span><span class="identifier-syntax">i</span><span class="plain-syntax">&lt;</span><span class="identifier-syntax">no_items</span><span class="plain-syntax">: </span><span class="identifier-syntax">i</span><span class="plain-syntax">++) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseTerm</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">rv</span><span class="plain-syntax"> = </span><span class="identifier-syntax">rv</span><span class="plain-syntax"> * </span><span class="constant-syntax">33</span><span class="plain-syntax"> + </span><span class="identifier-syntax">GetHashValue</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">, </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">rv</span><span class="plain-syntax">;</span>
<span class="plain-syntax">];</span>
</pre>
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>&#167;8. Printing. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax">[ </span><span class="identifier-syntax">COMBINATION_TY_Say</span><span class="plain-syntax"> </span><span class="identifier-syntax">comb</span><span class="plain-syntax"> </span><span class="identifier-syntax">format</span><span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> </span><span class="identifier-syntax">v</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">bk</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">comb</span><span class="plain-syntax">==0) || (</span><span class="identifier-syntax">BlkValueWeakKind</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">) ~= </span><span class="identifier-syntax">COMBINATION_TY</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">kind</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">COMBINATION_KIND_F</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">no_items</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseArity</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">print</span><span class="plain-syntax"> </span><span class="string-syntax">"("</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="identifier-syntax">i</span><span class="plain-syntax">=0: </span><span class="identifier-syntax">i</span><span class="plain-syntax">&lt;</span><span class="identifier-syntax">no_items</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">&gt;0) </span><span class="reserved-syntax">print</span><span class="plain-syntax"> </span><span class="string-syntax">", "</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">bk</span><span class="plain-syntax"> = </span><span class="identifier-syntax">KindBaseTerm</span><span class="plain-syntax">(</span><span class="identifier-syntax">kind</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">v</span><span class="plain-syntax"> = </span><span class="identifier-syntax">BlkValueRead</span><span class="plain-syntax">(</span><span class="identifier-syntax">comb</span><span class="plain-syntax">, </span><span class="identifier-syntax">i</span><span class="plain-syntax">+</span><span class="identifier-syntax">COMBINATION_ITEM_BASE</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">bk</span><span class="plain-syntax"> == </span><span class="identifier-syntax">LIST_OF_TY</span><span class="plain-syntax">) </span><span class="identifier-syntax">LIST_OF_TY_Say</span><span class="plain-syntax">(</span><span class="identifier-syntax">v</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">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">PrintKindValuePair</span><span class="plain-syntax">(</span><span class="identifier-syntax">bk</span><span class="plain-syntax">, </span><span class="identifier-syntax">v</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">print</span><span class="plain-syntax"> </span><span class="string-syntax">")"</span><span class="plain-syntax">;</span>
<span class="plain-syntax">];</span>
</pre>
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