scriptbox

commit 6b42229dc4866f0cb477d7b56c2e706267479d5a
parent 1b73c202256637c6303cd254a3d69084a7a16572
Author: Jan Dankert <develop@jandankert.de>
Date:   Sun, 26 Jun 2022 16:04:19 +0200

Fetched from upstream; More examples.

Diffstat:
M
dsl/DslLexer.class.php
 | 
7
++++++-
A
dsl/standard/Script.class.php
 | 
57
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
M
index.php
 | 
35
+++++++++++++++++++++++++++++++----

3 files changed, 94 insertions(+), 5 deletions(-)
diff --git a/dsl/DslLexer.class.php b/dsl/DslLexer.class.php
@@ -95,7 +95,12 @@ class DslLexer
 						throw new DslParserException("Unclosed string",$line);
 					if   ( $char == '\\') {
 						$char = array_shift($chars);
-						$value .= $char;
+						if   ( $char == 'n' )
+							$value = "\n";
+						elseif ( $char == 't' )
+							$value = "\t";
+						else
+							$value .= $char;
 					}
 					elseif ($char != $textEncloser) {
 						$value .= $char;
diff --git a/dsl/standard/Script.class.php b/dsl/standard/Script.class.php
@@ -0,0 +1,56 @@
+<?php
+
+namespace dsl\standard;
+
+use dsl\ast\DslStatement;
+use dsl\context\DslObject;
+use dsl\DslToken;
+
+class Script implements DslObject
+{
+	/**
+	 * @var DslToken[]
+	 */
+	private $tokens;
+
+	/**
+	 * @var DslStatement
+	 */
+	private $ast;
+
+	/**
+	 * @param $tokens DslToken[]
+	 * @param $ast DslStatement
+	 */
+	public function __construct($tokens, $ast )
+	{
+		$this->tokens = $tokens;
+		$this->ast    = $ast;
+	}
+
+	public function getToken()
+	{
+		return implode("\n",$this->tokens);
+	}
+
+
+	public function getSource()
+	{
+		$line   = 0;
+		$source = '';
+
+		foreach( $this->tokens as $token ) {
+
+			$source .= ($line != $token->lineNumber ? "\n" . str_pad($token->lineNumber, 4, '0', STR_PAD_LEFT).': ' : '') . $token->value;
+			$line = $token->lineNumber;
+		}
+
+		return $source."\n";
+	}
+
+
+	public function getSyntaxTree()
+	{
+		return print_r($this->ast,true);
+	}
+}
+\ No newline at end of file
diff --git a/index.php b/index.php
@@ -20,16 +20,43 @@ require('./autoload.php');
 <h1>Script Sandbox</h1>
 <p>Script sandbox for PHP. The syntax is a subset of Javascript. The interpreter is supporting functions, full arithmetic calculations, for-loops, if-else statements.
 </p>
-    <?php $code = $_POST['code'] ?: <<<DEF
+    <?php $code = @$_POST['code'] ?: <<<DEF
 // Script sandbox
 // Feel free to write some code here....
-write( "test" );
+//write( "test" );
 
 /**
-*/
-function name() {
+ * functions without parameters
+ */
+function something() {
         return "something";
 }
+
+write( "I wrote " + something() + "\\n" );
+
+/**
+ * functions with parameters
+ */
+function sayName( name ) {
+  write( "your name is " + name + "\\n" );
+}
+
+sayName("Alice");
+
+// Arithmetic magic 
+write( "Arithmetic magic: 1 + 2 * (3 + 2) = " );
+write(  1 + 2 * (3 + 2)  );
+write( "\\n" );
+
+
+
+// lists...
+names = Array.of("Alice","Bob",something() );
+
+for( name of names ) {
+   write( "A name: " + name + "\\n");
+}
+
 DEF
    ; ?>