<?php
/**
 * PHP Version 5
 *
 * FHComplete
 */

/**
 * Ensures method names are correct depending on whether they are public
 * or private, and that functions are named correctly.
 *
 */
class FHComplete_Sniffs_NamingConventions_ValidFunctionNameSniff extends PHP_CodeSniffer_Standards_AbstractScopeSniff {

/**
 * A list of all PHP magic methods.
 *
 * @var array
 */
	protected $_magicMethods = array(
		'construct',
		'destruct',
		'call',
		'callStatic',
		'debugInfo',
		'get',
		'set',
		'isset',
		'unset',
		'sleep',
		'wakeup',
		'toString',
		'set_state',
		'clone',
		'invoke',
	);

/**
 * Constructs a PEAR_Sniffs_NamingConventions_ValidFunctionNameSniff.
 */
	public function __construct() {
		parent::__construct(array(T_CLASS, T_INTERFACE), array(T_FUNCTION), true);
	}

/**
 * Processes the tokens within the scope.
 *
 * @param PHP_CodeSniffer_File $phpcsFile The file being processed.
 * @param integer $stackPtr The position where this token was found.
 * @param integer $currScope The position of the current scope.
 * @return void
 */
	protected function processTokenWithinScope(PHP_CodeSniffer_File $phpcsFile, $stackPtr, $currScope) {
		$methodName = $phpcsFile->getDeclarationName($stackPtr);
		if ($methodName === null) {
			// Ignore closures.
			return;
		}

		$className = $phpcsFile->getDeclarationName($currScope);
		$errorData = array($className . '::' . $methodName);

		// PHP4 constructors are allowed to break our rules.
		if ($methodName === $className) {
			return;
		}

		// PHP4 destructors are allowed to break our rules.
		if ($methodName === '_' . $className) {
			return;
		}

		// Ignore magic methods
		if (preg_match('/^__(' . implode('|', $this->_magicMethods) . ')$/', $methodName)) {
			return;
		}

		$methodProps = $phpcsFile->getMethodProperties($stackPtr);
		if ($methodProps['scope_specified'] === false) {
			// Let another sniffer take care of that
			return;
		}

		$isPublic = $methodProps['scope'] === 'public';
		$isProtected = $methodProps['scope'] === 'protected';
		$isPrivate = $methodProps['scope'] === 'private';
		$scope = $methodProps['scope'];

		if ($isPublic === true) {
			if ($methodName[0] === '_') {
				$error = 'Public method name "%s" must not be prefixed with underscore';
				$phpcsFile->addError($error, $stackPtr, 'PublicWithUnderscore', $errorData);
				return;
			}
			// Underscored public methods in controller are allowed to break our rules.
			if (substr($className, -10) === 'Controller') {
				return;
			}
			// Underscored public methods in shells are allowed to break our rules.
			if (substr($className, -5) === 'Shell') {
				return;
			}
			// Underscored public methods in tasks are allowed to break our rules.
			if (substr($className, -4) === 'Task') {
				return;
			}
		}
	}

/**
 * Processes the tokens outside the scope.
 *
 * @param PHP_CodeSniffer_File $phpcsFile The file being processed.
 * @param integer $stackPtr  The position where this token was found.
 * @return void
 */
	protected function processTokenOutsideScope(PHP_CodeSniffer_File $phpcsFile, $stackPtr) {
	}

}