File modules/dsl/ast/DslVariable.class.php

Last commit: Fri Jul 1 18:09:05 2022 +0200	Jan Dankert	New: Bugfixes and much more string and array functions for the DSL.


     1 <?php
     2 
     3 namespace dsl\ast;
     4 
     5 use dsl\context\Scriptable;
     6 use dsl\DslRuntimeException;
     7 use dsl\executor\DslInterpreter;
     8 
     9 class DslVariable implements DslStatement
    10 {
    11 	public $name;
    12 
    13 	/**
    14 	 * @param $name
    15 	 */
    16 	public function __construct($name)
    17 	{
    18 		$this->name = $name;
    19 	}
    20 
    21 
    22 	public function execute( & $context ) {
    23 
    24 		if   (  is_object( $context) ) {
    25 
    26 			// copy object methods to the object context to make them callable.
    27 			$property = $this->name;
    28 
    29 			if   ( property_exists( $context,$property ) ) {
    30 
    31 				return $context->$property;
    32 			}
    33 
    34 			if   ( method_exists( $context,$this->name ) ) {
    35 
    36 				return function() use ($property, $context) {
    37 
    38 					// For Security: Do not expose all available objects, they must implement a marker interface.
    39 					if   ( DslInterpreter::isSecure() && ! $context instanceof Scriptable )
    40 						throw new DslRuntimeException('Object '.get_class($context).' is not marked as scriptable and therefore not available in secure mode');
    41 
    42 					return call_user_func_array( array($context,$property),func_get_args() );
    43 				};
    44 			}
    45 
    46 			throw new DslRuntimeException('method or property \''.$property.'\' does not exist' );
    47 		}
    48 
    49 		if   ( ! array_key_exists( $this->name, $context ) )
    50 			throw new DslRuntimeException('variable or property \''.$this->name.'\' does not exist');
    51 
    52 		return $context[ $this->name ];
    53 	}
    54 
    55 	public function parse($tokens)
    56 	{
    57 	}
    58 }



Download modules/dsl/ast/DslVariable.class.php


History
Fri, 1 Jul 2022 18:09:05 +0200	Jan Dankert	New: Bugfixes and much more string and array functions for the DSL.
Mon, 27 Jun 2022 00:40:42 +0200	Jan Dankert	New: Marker interface 'Scriptable', Proxy class for MQTT, help() method in Scripts.
Sat, 28 May 2022 18:00:13 +0200	Jan Dankert	New: DSL with a much better syntax parsing and support for assignments, conditions, ...