<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\String;

/**
 * A string whose value is computed lazily by a callback.
 *
 * @author Nicolas Grekas <p@tchwork.com>
 */
class LazyString implements \Stringable, \JsonSerializable
{
    private \Closure|string $value;

    /**
     * @param callable|array $callback A callable or a [Closure, method] lazy-callable
     */
    public static function fromCallable(callable|array $callback, mixed ...$arguments): static
    {
        if (\is_array($callback) && !\is_callable($callback) && !(($callback[0] ?? null) instanceof \Closure || 2 < \count($callback))) {
            throw new \TypeError(sprintf('Argument 1 passed to "%s()" must be a callable or a [Closure, method] lazy-callable, "%s" given.', __METHOD__, '['.implode(', ', array_map('get_debug_type', $callback)).']'));
        }

        $lazyString = new static();
        $lazyString->value = static function () use (&$callback, &$arguments, &$value): string {
            if (null !== $arguments) {
                if (!\is_callable($callback)) {
                    $callback[0] = $callback[0]();
                    $callback[1] = $callback[1] ?? '__invoke';
                }
                $value = $callback(...$arguments);
                $callback = self::getPrettyName($callback);
                $arguments = null;
            }

            return $value ?? '';
        };

        return $lazyString;
    }

    public static function fromStringable(string|int|float|bool|\Stringable $value): static
    {
        if (\is_object($value)) {
            return static::fromCallable([$value, '__toString']);
        }

        $lazyString = new static();
        $lazyString->value = (string) $value;

        return $lazyString;
    }

    /**
     * Tells whether the provided value can be cast to string.
     */
    final public static function isStringable(mixed $value): bool
    {
        return \is_string($value) || $value instanceof \Stringable || \is_scalar($value);
    }

    /**
     * Casts scalars and stringable objects to strings.
     *
     * @throws \TypeError When the provided value is not stringable
     */
    final public static function resolve(\Stringable|string|int|float|bool $value): string
    {
        return $value;
    }

    public function __toString(): string
    {
        if (\is_string($this->value)) {
            return $this->value;
        }

        try {
            return $this->value = ($this->value)();
        } catch (\Throwable $e) {
            if (\TypeError::class === \get_class($e) && __FILE__ === $e->getFile()) {
                $type = explode(', ', $e->getMessage());
                $type = substr(array_pop($type), 0, -\strlen(' returned'));
                $r = new \ReflectionFunction($this->value);
                $callback = $r->getStaticVariables()['callback'];

                $e = new \TypeError(sprintf('Return value of %s() passed to %s::fromCallable() must be of the type string, %s returned.', $callback, static::class, $type));
            }

            throw $e;
        }
    }

    public function __sleep(): array
    {
        $this->__toString();

        return ['value'];
    }

    public function jsonSerialize(): string
    {
        return $this->__toString();
    }

    private function __construct()
    {
    }

    private static function getPrettyName(callable $callback): string
    {
        if (\is_string($callback)) {
            return $callback;
        }

        if (\is_array($callback)) {
            $class = \is_object($callback[0]) ? get_debug_type($callback[0]) : $callback[0];
            $method = $callback[1];
        } elseif ($callback instanceof \Closure) {
            $r = new \ReflectionFunction($callback);

            if (false !== strpos($r->name, '{closure}') || !$class = \PHP_VERSION_ID >= 80111 ? $r->getClosureCalledClass() : $r->getClosureScopeClass()) {
                return $r->name;
            }

            $class = $class->name;
            $method = $r->name;
        } else {
            $class = get_debug_type($callback);
            $method = '__invoke';
        }

        return $class.'::'.$method;
    }
}

• [D] Exception
• [D] Inflector
• [D] Resources
• [D] Slugger
• [F] AbstractString.php
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• [F] AbstractUnicodeString.php
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• [F] ByteString.php
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• [F] CHANGELOG.md
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• [F] CodePointString.php
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• [F] composer.json
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• [F] LazyString.php
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• [F] LICENSE
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• [F] README.md
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• [F] UnicodeString.php
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About Section

About NFC Pay: Our Story and Mission

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.

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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.

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