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<center><h1>Module <a href="type_Stream.html">Stream</a></h1></center>
<br>
<pre><span class="keyword">module</span> Stream: <code class="code"><span class="keyword">sig</span></code> <a href="Stream.html">..</a> <code class="code"><span class="keyword">end</span></code></pre>Streams and parsers.<br>
<hr width="100%">
<pre><span id="TYPEt"><span class="keyword">type</span> <code class="type">'a</code> t</span> </pre>
<div class="info">
The type of streams holding values of type <code class="code"><span class="keywordsign">'</span>a</code>.<br>
</div>
<pre><span id="EXCEPTIONFailure"><span class="keyword">exception</span> Failure</span></pre>
<div class="info">
Raised by parsers when none of the first components of the stream
patterns is accepted.<br>
</div>
<pre><span id="EXCEPTIONError"><span class="keyword">exception</span> Error</span> <span class="keyword">of</span> <code class="type">string</code></pre>
<div class="info">
Raised by parsers when the first component of a stream pattern is
accepted, but one of the following components is rejected.<br>
</div>
<br>
<span id="6_Streambuilders"><h6>Stream builders</h6></span>
<p>
Warning: these functions create streams with fast access; it is illegal
to mix them with streams built with <code class="code">[< >]</code>; would raise <code class="code"><span class="constructor">Failure</span></code>
when accessing such mixed streams.<br>
<pre><span id="VALfrom"><span class="keyword">val</span> from</span> : <code class="type">(int -> 'a option) -> 'a <a href="Stream.html#TYPEt">t</a></code></pre><div class="info">
<code class="code"><span class="constructor">Stream</span>.from f</code> returns a stream built from the function <code class="code">f</code>.
To create a new stream element, the function <code class="code">f</code> is called with
the current stream count. The user function <code class="code">f</code> must return either
<code class="code"><span class="constructor">Some</span> <value></code> for a value or <code class="code"><span class="constructor">None</span></code> to specify the end of the
stream.<br>
</div>
<pre><span id="VALof_list"><span class="keyword">val</span> of_list</span> : <code class="type">'a list -> 'a <a href="Stream.html#TYPEt">t</a></code></pre><div class="info">
Return the stream holding the elements of the list in the same
order.<br>
</div>
<pre><span id="VALof_string"><span class="keyword">val</span> of_string</span> : <code class="type">string -> char <a href="Stream.html#TYPEt">t</a></code></pre><div class="info">
Return the stream of the characters of the string parameter.<br>
</div>
<pre><span id="VALof_channel"><span class="keyword">val</span> of_channel</span> : <code class="type"><a href="Pervasives.html#TYPEin_channel">in_channel</a> -> char <a href="Stream.html#TYPEt">t</a></code></pre><div class="info">
Return the stream of the characters read from the input channel.<br>
</div>
<br>
<span id="6_Streamiterator"><h6>Stream iterator</h6></span><br>
<pre><span id="VALiter"><span class="keyword">val</span> iter</span> : <code class="type">('a -> unit) -> 'a <a href="Stream.html#TYPEt">t</a> -> unit</code></pre><div class="info">
<code class="code"><span class="constructor">Stream</span>.iter f s</code> scans the whole stream s, applying function <code class="code">f</code>
in turn to each stream element encountered.<br>
</div>
<br>
<span id="6_Predefinedparsers"><h6>Predefined parsers</h6></span><br>
<pre><span id="VALnext"><span class="keyword">val</span> next</span> : <code class="type">'a <a href="Stream.html#TYPEt">t</a> -> 'a</code></pre><div class="info">
Return the first element of the stream and remove it from the
stream. Raise Stream.Failure if the stream is empty.<br>
</div>
<pre><span id="VALempty"><span class="keyword">val</span> empty</span> : <code class="type">'a <a href="Stream.html#TYPEt">t</a> -> unit</code></pre><div class="info">
Return <code class="code">()</code> if the stream is empty, else raise <code class="code"><span class="constructor">Stream</span>.<span class="constructor">Failure</span></code>.<br>
</div>
<br>
<span id="6_Usefulfunctions"><h6>Useful functions</h6></span><br>
<pre><span id="VALpeek"><span class="keyword">val</span> peek</span> : <code class="type">'a <a href="Stream.html#TYPEt">t</a> -> 'a option</code></pre><div class="info">
Return <code class="code"><span class="constructor">Some</span></code> of "the first element" of the stream, or <code class="code"><span class="constructor">None</span></code> if
the stream is empty.<br>
</div>
<pre><span id="VALjunk"><span class="keyword">val</span> junk</span> : <code class="type">'a <a href="Stream.html#TYPEt">t</a> -> unit</code></pre><div class="info">
Remove the first element of the stream, possibly unfreezing
it before.<br>
</div>
<pre><span id="VALcount"><span class="keyword">val</span> count</span> : <code class="type">'a <a href="Stream.html#TYPEt">t</a> -> int</code></pre><div class="info">
Return the current count of the stream elements, i.e. the number
of the stream elements discarded.<br>
</div>
<pre><span id="VALnpeek"><span class="keyword">val</span> npeek</span> : <code class="type">int -> 'a <a href="Stream.html#TYPEt">t</a> -> 'a list</code></pre><div class="info">
<code class="code">npeek n</code> returns the list of the <code class="code">n</code> first elements of
the stream, or all its remaining elements if less than <code class="code">n</code>
elements are available.<br>
</div>
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