<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>Parrot - NULL</title> <link rel="stylesheet" type="text/css" href="../../../resources/parrot.css" media="all"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body> <div id="wrapper"> <div id="header"> <a href="http://www.parrot.org"> <img border=0 src="../../../resources/parrot_logo.png" id="logo" alt="parrot"> </a> </div> <!-- "header" --> <div id="divider"></div> <div id="mainbody"> <div id="breadcrumb"> <a href="../../../html/index.html">Home</a> » <a href="../../../html/pmc.html">PMCs</a> » NULL </div> <h1><a name="NAME" >NAME</a></h1> <p>src/pmc/null.pmc - NULL</p> <h1><a name="DESCRIPTION" >DESCRIPTION</a></h1> <p>This simply creates a way of catching <code>NULL</code> register accesses without really slowing down the bytecode execution.</p> <h2><a name="Vtable_functions" >Vtable functions</a></h2> <dl> <dt><a name="void_init()" ><b><code>void init()</b></code></a></dt> Overrides the default to do nothing. <dt><a name="INTVAL_is_same(PMC_*value)" ><b><code>INTVAL is_same(PMC *value)</b></code></a></dt> Returns true if value is also a null PMC, false otherwise. <dt><a name="PMC_*find_method(STRING_*method_name)" ><b><code>PMC *find_method(STRING *method_name)</b></code></a></dt> Gives a more informative message than the automaticaly generated version.</dl> <h2><a name="Auxiliar_functions" >Auxiliar functions</a></h2> <dl> <dt><a name="static_void_null_pmc_access(PARROT_INTERP,_int_index)" ><b><code>static void null_pmc_access(PARROT_INTERP, int index)</b></code></a></dt> Throws the Null PMC access exception.</dl> </div> <!-- "mainbody" --> <div id="divider"></div> <div id="footer"> Copyright © 2002-2011, Parrot Foundation. </div> </div> <!-- "wrapper" --> </body> </html>