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📝 Editando: Context.php

<?php

/*
 * This file is part of Psy Shell.
 *
 * (c) 2012-2018 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'];

// Whitelist 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;

/**
     * Get a context variable.
     *
     * @throws InvalidArgumentException If the variable is not found in the current context
     *
     * @param string $name
     *
     * @return mixed
     */
    public function get($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.
     *
     * @return array
     */
    public function getAll()
    {
        return array_merge($this->scopeVariables, $this->getSpecialVariables());
    }

/**
     * Get all defined magic variables: $_, $_e, $__out, $__class, $__file, etc.
     *
     * @return array
     */
    public function getSpecialVariables()
    {
        $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.
     *
     * @param \Exception $e
     */
    public function setLastException(\Exception $e)
    {
        $this->lastException = $e;
    }

/**
     * Get the most recent Exception.
     *
     * @throws \InvalidArgumentException If no Exception has been caught
     *
     * @return null|\Exception
     */
    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 $lastStdout
     */
    public function setLastStdout($lastStdout)
    {
        $this->lastStdout = $lastStdout;
    }

/**
     * Get the most recent output from evaluated code.
     *
     * @throws \InvalidArgumentException If no output has happened yet
     *
     * @return null|string
     */
    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.
     *
     * @param object|null $boundObject
     */
    public function setBoundObject($boundObject)
    {
        $this->boundObject = is_object($boundObject) ? $boundObject : null;
    }

/**
     * Get the bound object ($this variable) for the interactive shell.
     *
     * @return object|null
     */
    public function getBoundObject()
    {
        return $this->boundObject;
    }

/**
     * 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.
     *
     * @return array
     */
    public function getCommandScopeVariables()
    {
        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()
    {
        return array_diff(self::$commandScopeNames, array_keys($this->commandScopeVariables));
    }

/**
     * Check whether a variable name is a magic variable.
     *
     * @param string $name
     *
     * @return bool
     */
    public static function isSpecialVariableName($name)
    {
        return in_array($name, self::$specialNames) || in_array($name, self::$commandScopeNames);
    }
}

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[ .. Voltar ]
📁 CodeCleaner/	0755
📄 CodeCleaner.php	0644	[ EDITAR/VER ]
📁 Command/	0755
📄 Compiler.php	0644	[ EDITAR/VER ]
📄 ConfigPaths.php	0644	[ EDITAR/VER ]
📄 Configuration.php	0644	[ EDITAR/VER ]
📄 ConsoleColorFactory.php	0644	[ EDITAR/VER ]
📄 Context.php	0644	[ EDITAR/VER ]
📄 ContextAware.php	0644	[ EDITAR/VER ]
📁 Exception/	0755
📄 ExecutionClosure.php	0644	[ EDITAR/VER ]
📁 ExecutionLoop/	0755
📄 ExecutionLoop.php	0644	[ EDITAR/VER ]
📁 Formatter/	0755
📁 Input/	0755
📁 Output/	0755
📄 ParserFactory.php	0644	[ EDITAR/VER ]
📁 Readline/	0755
📁 Reflection/	0755
📄 Shell.php	0644	[ EDITAR/VER ]
📁 Sudo/	0755
📄 Sudo.php	0644	[ EDITAR/VER ]
📁 TabCompletion/	0755
📁 Util/	0755
📁 VarDumper/	0755
📁 VersionUpdater/	0755
📄 functions.php	0644	[ EDITAR/VER ]

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📝 Editando: Context.php