public function autoload( $class ) {

		// Iterate over namespaces to find a match.
		foreach ( $this->namespaces as $namespace ) {

			// Move on if the object does not belong to the current namespace.
			if ( 0 !== strpos( $class, $namespace['root'] ) ) {
				continue;
			}

			// Remove namespace root level to correspond with root filesystem, and
			// replace the namespace separator "\" by the system-dependent directory separator.
			$filename = str_replace(
				array( $namespace['root'], '\\' ),
				array( '', DIRECTORY_SEPARATOR ),
				$class
			);

			// Remove a leading backslash from the class name.
			$filename = $this->remove_leading_backslash( $filename );

			// Change to lower case if requested.
			if ( $namespace['lowercase'] ) {
				$filename = strtolower( $filename );
			}

			// Change underscores into hyphens if requested.
			if ( $namespace['underscores'] ) {
				$filename = str_replace( '_', '-', $filename );
			}

			// Add base_dir, prefix and suffix.
			$filepath = $namespace['base_dir']
				. $namespace['prefix']
				. $filename
				. $namespace['suffix'];

			// Throw an exception if the file does not exist or is not readable.
			if ( is_readable( $filepath ) ) {
				require_once $filepath;
			}
		}
	}