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

Last commit: Tue Jul 19 00:10:00 2022 +0200	Jan Dankert	New: Scripting language: Ignore Keyword "new"; Support for Calling object constructors; Splitting objects into an instance and a wrapper.


     1 <?php
     2 
     3 namespace dsl\ast;
     4 
     5 use dsl\DslParserException;
     6 use dsl\DslRuntimeException;
     7 use dsl\DslToken;
     8 use dsl\standard\NumberInstance;
     9 use dsl\standard\ArrayInstance;
    10 use dsl\standard\StringInstance;
    11 
    12 class DslOperation implements DslStatement
    13 {
    14 	private $operator;
    15 	private $left;
    16 	private $right;
    17 
    18 	/**
    19 	 * DslOperation constructor.
    20 	 * @param $operator
    21 	 * @param $left
    22 	 * @param $right
    23 	 */
    24 	public function __construct($operator, $left, $right)
    25 	{
    26 		$this->operator = $operator;
    27 		$this->left  = new DslExpression(  $left );
    28 		$this->right = new DslExpression( $right );
    29 	}
    30 
    31 
    32 	/**
    33 	 * @throws DslRuntimeException
    34 	 */
    35 	public function execute(& $context ) {
    36 
    37 		$left  = $this->left->execute( $context );
    38 		$right = $this->right->execute( $context );
    39 
    40 		switch( $this->operator ) {
    41 			case '+':
    42 				if   ( is_string($left)  )
    43 					return $left . (string)$right;
    44 				if   ($left instanceof ArrayInstance)
    45 					return $left->concat( $right );
    46 				if   ($left instanceof StringInstance)
    47 					return $left->__toString() . (string)$right;
    48 				if   ($left instanceof NumberInstance)
    49 					return $left->toNumber() + intval($right);
    50 				else
    51 					return intval($left) + intval($right);
    52 
    53 			case '-':
    54 				return intval($left) - intval($right);
    55 
    56 			case '*':
    57 				return $left * $right;
    58 
    59 			case '/':
    60 				return $left / $right;
    61 
    62 			case '==':
    63 				return $left == $right;
    64 			case '!=':
    65 				return $left != $right;
    66 			case '<':
    67 				return $left < $right;
    68 			case '<=':
    69 				return $left <= $right;
    70 			case '>':
    71 				return $left > $right;
    72 			case '>=':
    73 				return $left >= $right;
    74 
    75 			case '||':
    76 				return $left || $right;
    77 			case '&&':
    78 				return $left && $right;
    79 
    80 			case '%':
    81 				return $left % $right;
    82 
    83 			case '!':
    84 				return ! $left;
    85 
    86 			default:
    87 				throw new DslRuntimeException('Unknown operator \''.$this->operator.'\'');
    88 		}
    89 
    90 	}
    91 
    92 
    93 	public function parse($tokens)
    94 	{
    95 	}
    96 }



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


History
Tue, 19 Jul 2022 00:10:00 +0200	Jan Dankert	New: Scripting language: Ignore Keyword "new"; Support for Calling object constructors; Splitting objects into an instance and a wrapper.
Fri, 1 Jul 2022 18:09:05 +0200	Jan Dankert	New: Bugfixes and much more string and array functions for the DSL.
Sun, 26 Jun 2022 15:46:54 +0200	Jan Dankert	Fix: Another, little better, hack for parameterless functions. Shunting yard seems to be unable to handle empty parentheses.
Sat, 25 Jun 2022 14:26:33 +0200	Jan Dankert	New: Many Enhancements for the internal script language: More access to the data structure of pages, folders, templates, ...
Sun, 29 May 2022 16:56:40 +0200	Jan Dankert	New: DSL with support for functions with return values, full arithmetic, object properties
Sun, 29 May 2022 01:13:27 +0200	Jan Dankert	New: DSL with support for functions