<?php
/*
* This file is part of Psy Shell.
*
* (c) 2012-2023 Justin Hileman
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Psy;
/**
* The Shell execution context.
*
* This class encapsulates the current variables, most recent return value and
* exception, and the current namespace.
*/
class Context
{
private static $specialNames = ['_', '_e', '__out', '__psysh__', 'this'];
// Include a very limited number of command-scope magic variable names.
// This might be a bad idea, but future me can sort it out.
private static $commandScopeNames = [
'__function', '__method', '__class', '__namespace', '__file', '__line', '__dir',
];
private $scopeVariables = [];
private $commandScopeVariables = [];
private $returnValue;
private $lastException;
private $lastStdout;
private $boundObject;
private $boundClass;
/**
* Get a context variable.
*
* @throws \InvalidArgumentException If the variable is not found in the current context
*
* @param string $name
*
* @return mixed
*/
public function get(string $name)
{
switch ($name) {
case '_':
return $this->returnValue;
case '_e':
if (isset($this->lastException)) {
return $this->lastException;
}
break;
case '__out':
if (isset($this->lastStdout)) {
return $this->lastStdout;
}
break;
case 'this':
if (isset($this->boundObject)) {
return $this->boundObject;
}
break;
case '__function':
case '__method':
case '__class':
case '__namespace':
case '__file':
case '__line':
case '__dir':
if (\array_key_exists($name, $this->commandScopeVariables)) {
return $this->commandScopeVariables[$name];
}
break;
default:
if (\array_key_exists($name, $this->scopeVariables)) {
return $this->scopeVariables[$name];
}
break;
}
throw new \InvalidArgumentException('Unknown variable: $'.$name);
}
/**
* Get all defined variables.
*/
public function getAll(): array
{
return \array_merge($this->scopeVariables, $this->getSpecialVariables());
}
/**
* Get all defined magic variables: $_, $_e, $__out, $__class, $__file, etc.
*/
public function getSpecialVariables(): array
{
$vars = [
'_' => $this->returnValue,
];
if (isset($this->lastException)) {
$vars['_e'] = $this->lastException;
}
if (isset($this->lastStdout)) {
$vars['__out'] = $this->lastStdout;
}
if (isset($this->boundObject)) {
$vars['this'] = $this->boundObject;
}
return \array_merge($vars, $this->commandScopeVariables);
}
/**
* Set all scope variables.
*
* This method does *not* set any of the magic variables: $_, $_e, $__out,
* $__class, $__file, etc.
*
* @param array $vars
*/
public function setAll(array $vars)
{
foreach (self::$specialNames as $key) {
unset($vars[$key]);
}
foreach (self::$commandScopeNames as $key) {
unset($vars[$key]);
}
$this->scopeVariables = $vars;
}
/**
* Set the most recent return value.
*
* @param mixed $value
*/
public function setReturnValue($value)
{
$this->returnValue = $value;
}
/**
* Get the most recent return value.
*
* @return mixed
*/
public function getReturnValue()
{
return $this->returnValue;
}
/**
* Set the most recent Exception or Error.
*
* @param \Throwable $e
*/
public function setLastException(\Throwable $e)
{
$this->lastException = $e;
}
/**
* Get the most recent Exception or Error.
*
* @throws \InvalidArgumentException If no Exception has been caught
*
* @return \Throwable|null
*/
public function getLastException()
{
if (!isset($this->lastException)) {
throw new \InvalidArgumentException('No most-recent exception');
}
return $this->lastException;
}
/**
* Set the most recent output from evaluated code.
*
* @param string $lastStdout
*/
public function setLastStdout(string $lastStdout)
{
$this->lastStdout = $lastStdout;
}
/**
* Get the most recent output from evaluated code.
*
* @throws \InvalidArgumentException If no output has happened yet
*
* @return string|null
*/
public function getLastStdout()
{
if (!isset($this->lastStdout)) {
throw new \InvalidArgumentException('No most-recent output');
}
return $this->lastStdout;
}
/**
* Set the bound object ($this variable) for the interactive shell.
*
* Note that this unsets the bound class, if any exists.
*
* @param object|null $boundObject
*/
public function setBoundObject($boundObject)
{
$this->boundObject = \is_object($boundObject) ? $boundObject : null;
$this->boundClass = null;
}
/**
* Get the bound object ($this variable) for the interactive shell.
*
* @return object|null
*/
public function getBoundObject()
{
return $this->boundObject;
}
/**
* Set the bound class (self) for the interactive shell.
*
* Note that this unsets the bound object, if any exists.
*
* @param string|null $boundClass
*/
public function setBoundClass($boundClass)
{
$this->boundClass = (\is_string($boundClass) && $boundClass !== '') ? $boundClass : null;
$this->boundObject = null;
}
/**
* Get the bound class (self) for the interactive shell.
*
* @return string|null
*/
public function getBoundClass()
{
return $this->boundClass;
}
/**
* Set command-scope magic variables: $__class, $__file, etc.
*
* @param array $commandScopeVariables
*/
public function setCommandScopeVariables(array $commandScopeVariables)
{
$vars = [];
foreach ($commandScopeVariables as $key => $value) {
// kind of type check
if (\is_scalar($value) && \in_array($key, self::$commandScopeNames)) {
$vars[$key] = $value;
}
}
$this->commandScopeVariables = $vars;
}
/**
* Get command-scope magic variables: $__class, $__file, etc.
*/
public function getCommandScopeVariables(): array
{
return $this->commandScopeVariables;
}
/**
* Get unused command-scope magic variables names: __class, __file, etc.
*
* This is used by the shell to unset old command-scope variables after a
* new batch is set.
*
* @return array Array of unused variable names
*/
public function getUnusedCommandScopeVariableNames(): array
{
return \array_diff(self::$commandScopeNames, \array_keys($this->commandScopeVariables));
}
/**
* Check whether a variable name is a magic variable.
*
* @param string $name
*/
public static function isSpecialVariableName(string $name): bool
{
return \in_array($name, self::$specialNames) || \in_array($name, self::$commandScopeNames);
}
}
NFC Pay was founded with a vision to transform the way people handle transactions. Our journey is defined by a commitment to innovation, security, and convenience. We strive to deliver seamless, user-friendly payment solutions that make everyday transactions effortless and secure. Our mission is to empower you to pay with ease and confidence, anytime, anywhere.
Simplifying Payments, One Tap at a Time.
Reinventing Your Wallet for Modern Convenience.
Smart Payments for a Effortless Lifestyle.
Experience the Ease of Tap and Pay.
Innovative Solutions for Your Daily Transactions.
FAQ Section
Frequently Asked Questions About NFC Pay
Here are answers to some common questions about NFC Pay. We aim to provide clear and concise information to help you understand how our platform works and how it can benefit you. If you have any further inquiries, please don’t hesitate to contact our support team.
How do I register for NFC Pay?
Download the app and sign up using your email or phone number, then complete the verification process.
Is my payment information secure?
Yes, we use advanced encryption and security protocols to protect your payment details.
Can I add multiple cards to my NFC Pay wallet?
Absolutely, you can link multiple debit or credit cards to your wallet.
How do I transfer money to another user?
Go to the transfer section, select the recipient, enter the amount, and authorize the transfer.
What should I do if I forget my PIN?
Use the “Forgot PIN” feature in the app to reset it following the provided instructions.
How can I activate my merchant account?
Sign up for a merchant account through the app and follow the setup instructions to start accepting payments.
Can I track my payment status?
Yes, you can view and track your payment status in the account dashboard
In the digital age, privacy concerns have become increasingly paramount, prompting the European Union to enact the General Data Protection Regulation (GDPR) in 2018. Among its many provisions, GDPR sets strict guidelines for the collection and processing of personal data, including the use of cookies on websites. Privacy Policy
