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Module: Haml::Shared
— Haml Documentation
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<span class="title">Shared</span>
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<div id="content"><h1>Module: Haml::Shared
</h1>
<dl class="box">
<dt class="r1">Extended by:</dt>
<dd class="r1"><span class='object_link'><a href="" title="Haml::Shared (module)">Shared</a></span></dd>
<dt class="r2">Included in:</dt>
<dd class="r2"><span class='object_link'><a href="" title="Haml::Shared (module)">Shared</a></span></dd>
<dt class="r1 last">Defined in:</dt>
<dd class="r1 last">/build/buildd/ruby-haml-3.1.4/lib/haml/shared.rb</dd>
</dl>
<div class="clear"></div>
<h2>Overview</h2><div class="docstring">
<div class="discussion">
<p>This module contains functionality that’s shared between Haml and Sass.</p>
</div>
</div>
<div class="tags">
</div>
<h2>
Instance Method Summary
<small>(<a href="#" class="summary_toggle">collapse</a>)</small>
</h2>
<ul class="summary">
<li class="public ">
<span class="summary_signature">
<a href="#balance-instance_method" title="#balance (instance method)">- ((String, String)) <strong>balance</strong>(scanner, start, finish, count = 0) </a>
</span>
<span class="summary_desc"><div class='inline'><p>Moves a scanner through a balanced pair of characters.</p></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#handle_interpolation-instance_method" title="#handle_interpolation (instance method)">- (String) <strong>handle_interpolation</strong>(str) {|scan| ... }</a>
</span>
<span class="summary_desc"><div class='inline'><p>Scans through a string looking for the interoplation-opening <code>#{</code> and, when it’s found, yields the scanner to the calling code so it can handle it properly.</p>
<p>The scanner will have any backslashes immediately in front of the <code>#{</code> as the second capture group (<code>scan[2]</code>), and the text prior to that as the first (<code>scan[1]</code>)..</p></div></span>
</li>
<li class="public ">
<span class="summary_signature">
<a href="#human_indentation-instance_method" title="#human_indentation (instance method)">- (String) <strong>human_indentation</strong>(indentation, was = false) </a>
</span>
<span class="summary_desc"><div class='inline'><p>Formats a string for use in error messages about indentation.</p></div></span>
</li>
</ul>
<div id="instance_method_details" class="method_details_list">
<h2>Instance Method Details</h2>
<div class="method_details first">
<p class="signature first" id="balance-instance_method">
- (<tt>(String, String)</tt>) <strong>balance</strong>(scanner, start, finish, count = 0)
</p><div class="docstring">
<div class="discussion">
<p>Moves a scanner through a balanced pair of characters. For example:</p>
<pre class="code">Foo (Bar (Baz bang) bop) (Bang (bop bip))
^ ^
from to</pre>
</div>
</div>
<div class="tags">
<h3>Parameters:</h3>
<ul class="param">
<li>
<span class='name'>scanner</span>
<span class='type'>(<tt>StringScanner</tt>)</span>
—
<div class='inline'><p>The string scanner to move</p></div>
</li>
<li>
<span class='name'>start</span>
<span class='type'>(<tt>Character</tt>)</span>
—
<div class='inline'><p>The character opening the balanced pair. A <code>Fixnum</code> in 1.8, a <code>String</code> in 1.9</p></div>
</li>
<li>
<span class='name'>finish</span>
<span class='type'>(<tt>Character</tt>)</span>
—
<div class='inline'><p>The character closing the balanced pair. A <code>Fixnum</code> in 1.8, a <code>String</code> in 1.9</p></div>
</li>
<li>
<span class='name'>count</span>
<span class='type'>(<tt>Fixnum</tt>)</span>
<em class="default">(defaults to: <tt>0</tt>)</em>
—
<div class='inline'><p>The number of opening characters matched before calling this method</p></div>
</li>
</ul>
<h3>Returns:</h3>
<ul class="return">
<li>
<span class='type'>(<tt>(String, String)</tt>)</span>
—
<div class='inline'><p>The string matched within the balanced pair and the rest of the string. <code>["Foo (Bar (Baz bang) bop)", " (Bang (bop bip))"]</code> in the example above.</p></div>
</li>
</ul>
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File '/build/buildd/ruby-haml-3.1.4/lib/haml/shared.rb', line 41</span>
def balance(scanner, start, finish, count = 0)
str = ''
scanner = StringScanner.new(scanner) unless scanner.is_a? StringScanner
regexp = Regexp.new("(.*?)[\\#{start.chr}\\#{finish.chr}]", Regexp::MULTILINE)
while scanner.scan(regexp)
str << scanner.matched
count += 1 if scanner.matched[-1] == start
count -= 1 if scanner.matched[-1] == finish
return [str.strip, scanner.rest] if count == 0
end
end</pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<p class="signature " id="handle_interpolation-instance_method">
- (<tt>String</tt>) <strong>handle_interpolation</strong>(str) {|scan| ... }
</p><div class="docstring">
<div class="discussion">
<p>Scans through a string looking for the interoplation-opening <code>#{</code> and, when it’s found, yields the scanner to the calling code so it can handle it properly.</p>
<p>The scanner will have any backslashes immediately in front of the <code>#{</code> as the second capture group (<code>scan[2]</code>), and the text prior to that as the first (<code>scan[1]</code>).</p>
</div>
</div>
<div class="tags">
<h3>Yield Parameters:</h3>
<ul class="yieldparam">
<li>
<span class='name'>scan</span>
<span class='type'>(<tt>StringScanner</tt>)</span>
—
<div class='inline'><p>The scanner scanning through the string</p></div>
</li>
</ul>
<h3>Returns:</h3>
<ul class="return">
<li>
<span class='type'>(<tt>String</tt>)</span>
—
<div class='inline'><p>The text remaining in the scanner after all <code>#{</code>s have been processed</p></div>
</li>
</ul>
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File '/build/buildd/ruby-haml-3.1.4/lib/haml/shared.rb', line 18</span>
def handle_interpolation(str)
scan = StringScanner.new(str)
yield scan while scan.scan(/(.*?)(\\*)\#\{/)
scan.rest
end</pre>
</td>
</tr>
</table>
</div>
<div class="method_details ">
<p class="signature " id="human_indentation-instance_method">
- (<tt>String</tt>) <strong>human_indentation</strong>(indentation, was = false)
</p><div class="docstring">
<div class="discussion">
<p>Formats a string for use in error messages about indentation.</p>
</div>
</div>
<div class="tags">
<h3>Parameters:</h3>
<ul class="param">
<li>
<span class='name'>indentation</span>
<span class='type'>(<tt>String</tt>)</span>
—
<div class='inline'><p>The string used for indentation</p></div>
</li>
<li>
<span class='name'>was</span>
<span class='type'>(<tt>Boolean</tt>)</span>
<em class="default">(defaults to: <tt>false</tt>)</em>
—
<div class='inline'><p>Whether or not to add <code>"was"</code> or <code>"were"</code> (depending on how many characters were in <code>indentation</code>)</p></div>
</li>
</ul>
<h3>Returns:</h3>
<ul class="return">
<li>
<span class='type'>(<tt>String</tt>)</span>
—
<div class='inline'><p>The name of the indentation (e.g. <code>"12 spaces"</code>, <code>"1 tab"</code>)</p></div>
</li>
</ul>
</div><table class="source_code">
<tr>
<td>
<pre class="lines">
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</td>
<td>
<pre class="code"><span class="info file"># File '/build/buildd/ruby-haml-3.1.4/lib/haml/shared.rb', line 59</span>
def human_indentation(indentation, was = false)
if !indentation.include?(?\t)
noun = 'space'
elsif !indentation.include?(?\s)
noun = 'tab'
else
return indentation.inspect + (was ? ' was' : '')
end
singular = indentation.length == 1
if was
was = singular ? ' was' : ' were'
else
was = ''
end
"#{indentation.length} #{noun}#{'s' unless singular}#{was}"
end</pre>
</td>
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Generated on Tue Jan 3 12:26:12 2012 by
<a href="http://yardoc.org" title="Yay! A Ruby Documentation Tool" target="_parent">yard</a>
0.7.4 (ruby-1.8.7).
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