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+<!DOCTYPE html>
+
+<html lang="en">
+  <head>
+    <meta charset="utf-8">
+    <title>Utility Functions - Packrat Docs</title>
+    <link href="default.css" rel="stylesheet">
+  </head>
+
+  <body>
+
+
+  <h2>Utility Functions</h2>
+
+  <a href="index.html">Return to Contents</a>
+
+
+  <p>These are intended as helper functions for use with <em>Satisfy</em> combinators and the like
+  when parsing ordinary strings.</p>
+
+  <table>
+    <tr>
+<td><pre>
+generic
+    Set : in Ada.Strings.Maps.Character_Set;
+function In_Set
+       (Element : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is present within the given <em>Character_Set</em>.</td>
+    </tr>
+    <tr>
+<td><pre>
+generic
+    Set : in Ada.Strings.Maps.Character_Set;
+function Not_In_Set
+       (Element : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is not present within the given <em>Character_Set</em>.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Digit
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is one of the digits 0 through 9.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Hex
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is one of the digits 0 through 9 or one of the letters
+A through F, case insensitive.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Letter
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is one of the letters A through Z, case insensitive.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Alphanumeric
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is one of the digits 0 through 9 or one of the letters
+A through Z, case insensitive.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Punctuation
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is one of the punctuation characters <em>! &quot; # $ %
+&amp; &apos; ( ) * + , - . / : ; &lt; = &gt; ? @ [ \ ] ^ _ ` { | } ~</em> which annoyingly
+occupies several disjoint sections of ASCII.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_ASCII
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is in the lower half of the ASCII character set.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Extended_ASCII
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is in the upper half of the ASCII character set.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Space
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is a space.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Linespace
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is a space or horizontal tab.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_End_Of_Line
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is a linefeed or carriage return.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Is_Whitespace
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is a space, horizontal tab, linefeed, or carriage return.</td>
+    </tr>
+    <tr>
+<td><pre>
+function Not_Whitespace
+       (Char : in Character)
+    return Boolean;
+</pre></td>
+<td>Tests whether a <em>Character</em> is not a space, horizontal tab, linefeed, or carriage return.</td>
+    </tr>
+  </table>
+
+
+  </body>
+</html>
+