| 1 | <!DOCTYPE html> <html> <head> <title>CompressedUnsignedLongByteIterable.coffee</title> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <link rel="stylesheet" media="all" href="docco.css" /> </head> <body> <div id="container"> <div id="background"></div> <div id="jump_to"> Jump To … <div id="jump_wrapper"> <div id="jump_page"> <a class="source" href="ByteIterable.html"> ByteIterable.coffee </a> <a class="source" href="ByteIterator.html"> ByteIterator.coffee </a> <a class="source" href="ArrayByteIterable.html"> ArrayByteIterable.coffee </a> <a class="source" href="ByteIterableBase.html"> ByteIterableBase.coffee </a> <a class="source" href="ByteIterableUtil.html"> ByteIterableUtil.coffee </a> <a class="source" href="LightOutputStream.html"> LightOutputStream.coffee </a> <a class="source" href="StoreConfiguration.html"> StoreConfiguration.coffee </a> <a class="source" href="Reader.html"> Reader.coffee </a> <a class="source" href="Writer.html"> Writer.coffee </a> <a class="source" href="List.html"> List.coffee </a> <a class="source" href="ListNode.html"> ListNode.coffee </a> <a class="source" href="Cursor.html"> Cursor.coffee </a> <a class="source" href="DatabaseRoot.html"> DatabaseRoot.coffee </a> <a class="source" href="Environment.html"> Environment.coffee </a> <a class="source" href="EnvironmentConfig.html"> EnvironmentConfig.coffee </a> <a class="source" href="Store.html"> Store.coffee </a> <a class="source" href="Transaction.html"> Transaction.coffee </a> <a class="source" href="Addr64.html"> Addr64.coffee </a> <a class="source" href="DataIterator.html"> DataIterator.coffee </a> <a class="source" href="Log.html"> Log.coffee </a> <a class="source" href="LogCache.html"> LogCache.coffee </a> <a class="source" href="LogConfig.html"> LogConfig.coffee </a> <a class="source" href="LogUtil.html"> LogUtil.coffee </a> <a class="source" href="Loggable.html"> Loggable.coffee </a> <a class="source" href="LoggableFactory.html"> LoggableFactory.coffee </a> <a class="source" href="LoggableIterator.html"> LoggableIterator.coffee </a> <a class="source" href="LoggableToWrite.html"> LoggableToWrite.coffee </a> <a class="source" href="NullLoggable.html"> NullLoggable.coffee </a> <a class="source" href="RandomAccessByteIterable.html"> RandomAccessByteIterable.coffee </a> <a class="source" href="RandomAccessLoggable.html"> RandomAccessLoggable.coffee </a> <a class="source" href="RandomAccessLoggableIterator.html"> RandomAccessLoggableIterator.coffee </a> <a class="source" href="StackList.html"> StackList.coffee </a> <a class="source" href="CompoundByteIterable.html"> CompoundByteIterable.coffee </a> <a class="source" href="CompoundByteIteratorBase.html"> CompoundByteIteratorBase.coffee </a> <a class="source" href="CompressedUnsignedLongByteIterable.html"> CompressedUnsignedLongByteIterable.coffee </a> <a class="source" href="FixedLengthByteIterable.html"> FixedLengthByteIterable.coffee </a> </div> </div> </div> <table cellpadding="0" cellspacing="0"> <thead> <tr> <th class="docs"> <h1> CompressedUnsignedLongByteIterable.coffee </h1> </th> <th class="code"> </th> </tr> </thead> <tbody> <tr id="section-1"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-1">¶</a> </div> </td> <td class="code"> <div class="highlight"><pre><span class="nv">fs = </span><span class="nx">require</span> <span class="s1">'fs'</span>
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| 2 | <span class="nv">Addr64 = </span><span class="p">(</span><span class="nx">require</span> <span class="s1">'../Addr64.coffee'</span><span class="p">).</span><span class="nx">Addr64</span>
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| 3 | <span class="nv">LogUtil = </span><span class="p">(</span><span class="nx">require</span> <span class="s1">'../LogUtil.coffee'</span><span class="p">).</span><span class="nx">LogUtil</span>
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| 4 | <span class="nv">ByteIterableBase =</span>
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| 5 | <span class="p">(</span><span class="nx">require</span> <span class="s1">'../../database/impl/iterate/ByteIterableBase.coffee'</span><span class="p">).</span><span class="nx">ByteIterableBase</span>
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| 6 | <span class="nv">IllegalArgumentError =</span>
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| 7 | <span class="p">(</span><span class="nx">require</span> <span class="s1">'../../errors/IllegalArgumentError.coffee'</span><span class="p">).</span><span class="nx">IllegalArgumentError</span>
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| 8 | <span class="nv">EventEmitter = </span><span class="p">(</span><span class="nx">require</span> <span class="s1">'events'</span><span class="p">).</span><span class="nx">EventEmitter</span></pre></div> </td> </tr> <tr id="section-2"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-2">¶</a> </div> <p>TODO there is some cache in exodus - what is it for?</p> </td> <td class="code"> <div class="highlight"><pre></pre></div> </td> </tr> <tr id="section-3"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-3">¶</a> </div> <p>This class is used for compressed reading and writing of numbers using
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| 9 | iterators.</p> </td> <td class="code"> <div class="highlight"><pre><span class="k">class</span> <span class="nx">CompressedUnsignedLongByteIterable</span> <span class="k">extends</span> <span class="nx">ByteIterableBase</span></pre></div> </td> </tr> <tr id="section-4"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-4">¶</a> </div> <p>@private</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">MAX_DIGIT_NUMBER: </span><span class="mi">10</span></pre></div> </td> </tr> <tr id="section-5"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-5">¶</a> </div> <p>@private</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nv">l: </span><span class="kc">undefined</span>
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| 10 |
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| 11 | <span class="vi">@EMITTER = </span><span class="k">new</span> <span class="nx">EventEmitter</span><span class="p">()</span>
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| 12 | <span class="nx">@EMITTER</span><span class="p">.</span><span class="nx">setMaxListeners</span> <span class="mi">0</span></pre></div> </td> </tr> <tr id="section-6"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-6">¶</a> </div> <p>Constructor.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="vi">@create: </span><span class="nf">(o) -></span>
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| 13 | <span class="k">if</span> <span class="o">!</span><span class="nx">o</span><span class="o">?</span> <span class="k">then</span> <span class="nv">o = </span><span class="k">new</span> <span class="nx">CompressedUnsignedLongByteIterable</span>
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| 14 | <span class="k">return</span> <span class="nx">o</span></pre></div> </td> </tr> <tr id="section-7"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-7">¶</a> </div> <p>Constructor.</p>
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| 15 |
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| 16 | <p>@param l.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@create</span><span class="nv">$int: </span><span class="nf">(l, o) -></span>
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| 17 | <span class="k">if</span> <span class="o">!</span><span class="nx">o</span><span class="o">?</span> <span class="k">then</span> <span class="nv">o = </span><span class="k">new</span> <span class="nx">CompressedUnsignedLongByteIterable</span>
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| 18 | <span class="k">if</span> <span class="p">(</span><span class="nx">l</span> <span class="o"><</span> <span class="mi">0</span><span class="p">)</span>
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| 19 | <span class="k">throw</span> <span class="k">new</span> <span class="nx">IllegalArgumentError</span><span class="p">(</span><span class="nx">l</span><span class="p">.</span><span class="nx">toString</span><span class="p">())</span>
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| 20 | <span class="nv">o.l = </span><span class="nx">l</span>
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| 21 | <span class="k">return</span> <span class="nx">o</span></pre></div> </td> </tr> <tr id="section-8"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-8">¶</a> </div> <p>Gets new iterable.</p>
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| 22 |
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| 23 | <p>@param l number.
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| 24 | @return new iterable.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@getIterable</span><span class="nv">$int: </span><span class="nf">(l) -></span>
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| 25 | <span class="k">return</span> <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span><span class="nx">create$int</span> <span class="nx">l</span></pre></div> </td> </tr> <tr id="section-9"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-9">¶</a> </div> <p>Calculates the compressed number length.</p>
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| 26 |
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| 27 | <p>@param l number.
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| 28 | @return number length.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@getCompressedSize</span><span class="nv">$int: </span><span class="nf">(l) -></span>
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| 29 | <span class="nv">ll = </span><span class="nx">l</span>
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| 30 | <span class="nx">ll</span> <span class="o">>>>=</span> <span class="mi">7</span>
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| 31 | <span class="nv">result = </span><span class="mi">1</span>
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| 32 | <span class="k">while</span> <span class="nx">ll</span> <span class="o">></span> <span class="mi">0</span>
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| 33 | <span class="nx">result</span> <span class="o">+=</span> <span class="mi">1</span>
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| 34 | <span class="nx">ll</span> <span class="o">>>>=</span> <span class="mi">7</span>
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| 35 | <span class="k">return</span> <span class="nx">result</span></pre></div> </td> </tr> <tr id="section-10"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-10">¶</a> </div> <p>Writes compressed number to stream.</p>
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| 36 |
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| 37 | <p>@param l number.
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| 38 | @param stream the stream to write number in.</p>
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| 39 |
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| 40 | <p>@return reference to the same stream (just for tests!).</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@fillBytes$int</span><span class="nv">$LightOutputStream: </span><span class="nf">(l, stream) -></span>
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| 41 | <span class="k">if</span> <span class="p">(</span><span class="nx">l</span> <span class="o"><</span> <span class="mi">0</span><span class="p">)</span>
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| 42 | <span class="k">throw</span> <span class="k">new</span> <span class="nx">IllegalArgumentError</span><span class="p">(</span><span class="nx">l</span><span class="p">.</span><span class="nx">toString</span><span class="p">())</span>
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| 43 | <span class="nv">ll = </span><span class="nx">l</span>
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| 44 | <span class="k">while</span> <span class="kc">true</span>
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| 45 | <span class="nv">b = </span><span class="nx">ll</span> <span class="o">&</span> <span class="mh">0x7f</span>
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| 46 | <span class="k">if</span> <span class="p">((</span><span class="nx">ll</span> <span class="o">>>>=</span> <span class="mi">7</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">)</span>
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| 47 | <span class="nx">stream</span><span class="p">.</span><span class="nx">writeFast$int</span> <span class="nx">b</span> <span class="o">|</span> <span class="mh">0x80</span>
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| 48 | <span class="k">break</span>
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| 49 | <span class="nx">stream</span><span class="p">.</span><span class="nx">writeFast$int</span> <span class="nx">b</span>
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| 50 | <span class="k">return</span> <span class="nx">stream</span></pre></div> </td> </tr> <tr id="section-11"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-11">¶</a> </div> <p>Reads int from iterable. Method contains corruption check: if we have
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| 51 | already read MAX<em>DIGIT</em>NUMBER and continue reading, it means that info
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| 52 | is not a number.</p>
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| 53 |
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| 54 | <p>@param iterable the iterable to read data from.
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| 55 | @return number if it could be read without events, and undefined otherwise.
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| 56 | If undefined, the 'getInt' event is emitted with number or undefined
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| 57 | if it can't be read.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@getInt$ByteIterable</span><span class="nv">$emit: </span><span class="nf">(iterable) -></span>
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| 58 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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| 59 | <span class="nx">getInt$ByteIterator$emit</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">getIterator</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-12"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-12">¶</a> </div> <p>Reads int from iterable. Method contains corruption check: if we have
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| 60 | already read MAX<em>DIGIT</em>NUMBER and continue reading, it means that info
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| 61 | is not a number.</p>
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| 62 |
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| 63 | <p>@param iterator the iterator to the place to read data from.
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| 64 | @return number if it could be read without events, and undefined otherwise.
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| 65 | If undefined, the 'getInt' event is emitted with number or undefined
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| 66 | if it can't be read.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@getInt$ByteIterator</span><span class="nv">$emit: </span><span class="nf">(iterator) -></span>
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| 67 | <span class="nv">num = </span><span class="mi">0</span>
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| 68 | <span class="nv">ll = </span><span class="mi">0</span>
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| 69 | <span class="nv">shift = </span><span class="mi">0</span>
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| 70 | <span class="nv">valueIsRead = </span><span class="kc">false</span>
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| 71 | <span class="nv">emitGetInt = </span><span class="kc">true</span>
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| 72 | <span class="nv">oldIt = </span><span class="nx">iterator</span><span class="p">.</span><span class="nx">copy</span><span class="p">()</span>
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| 73 | <span class="nx">iterator</span><span class="p">.</span><span class="nx">removeAllListeners</span><span class="p">()</span>
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| 74 | <span class="k">if</span> <span class="nx">oldIt</span><span class="p">.</span><span class="nx">addr</span> <span class="o">!=</span> <span class="kc">undefined</span>
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| 75 | <span class="nv">addrString = </span><span class="nx">Addr64</span><span class="p">.</span><span class="nx">addr64ToString$Addr64$int</span><span class="p">(</span><span class="nx">oldIt</span><span class="p">.</span><span class="nx">addr</span><span class="p">,</span>
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| 76 | <span class="nx">LogUtil</span><span class="p">.</span><span class="nx">LOG_NAME_BASE</span><span class="p">)</span>
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| 77 | <span class="nv">emit = </span><span class="kc">false</span>
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| 78 | <span class="nv">onGetNext = </span><span class="p">(</span><span class="nx">v</span><span class="p">)</span> <span class="o">=></span>
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| 79 | <span class="k">if</span> <span class="nx">v</span> <span class="o">!=</span> <span class="kc">undefined</span>
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| 80 | <span class="k">if</span> <span class="nx">num</span> <span class="o">></span> <span class="nx">@MAX_DIGIT_NUMBER</span>
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| 81 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span><span class="nx">EMITTER</span><span class="p">.</span><span class="nx">emit</span> <span class="s1">'getInt'</span> <span class="o">+</span> <span class="nx">addrString</span><span class="p">,</span>
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| 82 | <span class="kc">undefined</span><span class="p">,</span> <span class="nx">iterator</span>
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| 83 | <span class="k">return</span> <span class="kc">undefined</span>
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| 84 | <span class="nx">ll</span> <span class="o">+=</span> <span class="p">((</span><span class="nx">v</span> <span class="o">&</span> <span class="mh">0x7f</span><span class="p">)</span> <span class="o"><<</span> <span class="nx">shift</span><span class="p">)</span>
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| 85 | <span class="k">if</span> <span class="p">(</span><span class="nx">v</span> <span class="o">&</span> <span class="mh">0x80</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">0</span>
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| 86 | <span class="nx">iterator</span><span class="p">.</span><span class="nx">removeAllListeners</span> <span class="s1">'next'</span>
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| 87 | <span class="k">if</span> <span class="nx">emit</span>
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| 88 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span><span class="nx">EMITTER</span><span class="p">.</span><span class="nx">emit</span> <span class="s1">'getInt'</span> <span class="o">+</span>
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| 89 | <span class="nx">addrString</span><span class="p">,</span> <span class="nx">ll</span><span class="p">,</span> <span class="nx">iterator</span>
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| 90 | <span class="k">return</span> <span class="kc">undefined</span>
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| 91 | <span class="k">return</span> <span class="nx">ll</span>
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| 92 | <span class="nx">shift</span> <span class="o">+=</span> <span class="mi">7</span>
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| 93 | <span class="nx">num</span> <span class="o">+=</span> <span class="mi">1</span>
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| 94 | <span class="nx">onGetNext</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">next$emit</span><span class="p">()</span>
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| 95 | <span class="nx">iterator</span><span class="p">.</span><span class="kc">on</span> <span class="s1">'next'</span><span class="p">,</span> <span class="p">(</span><span class="nx">v</span><span class="p">)</span> <span class="o">=></span>
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| 96 | <span class="nv">emit = </span><span class="kc">true</span>
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| 97 | <span class="nx">onGetNext</span> <span class="nx">v</span>
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| 98 | <span class="nx">onGetNext</span> <span class="nx">iterator</span><span class="p">.</span><span class="nx">next$emit</span><span class="p">()</span></pre></div> </td> </tr> <tr id="section-13"> <td class="docs"> <div class="pilwrap"> <a class="pilcrow" href="#section-13">¶</a> </div> <p>This methods are the same as getInt. Used for compatibility.</p> </td> <td class="code"> <div class="highlight"><pre> <span class="nx">@getLong$ByteIterable</span><span class="nv">$emit: </span><span class="nf">(iterable) -></span>
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| 99 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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| 100 | <span class="nx">getInt$ByteIterator$emit</span> <span class="nx">iterable</span><span class="p">.</span><span class="nx">getIterator</span><span class="p">()</span>
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| 101 |
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| 102 | <span class="nx">@getLong$ByteIterator</span><span class="nv">$emit: </span><span class="nf">(iterator) -></span>
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| 103 | <span class="nx">CompressedUnsignedLongByteIterable</span><span class="p">.</span>
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| 104 | <span class="nx">getInt$ByteIterator$emit</span> <span class="nx">iterator</span>
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| 105 |
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| 106 | <span class="nv">exports.CompressedUnsignedLongByteIterable = </span><span class="nx">CompressedUnsignedLongByteIterable</span>
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| 107 |
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| 108 | </pre></div> </td> </tr> </tbody> </table> </div> </body> </html> |
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