From 3b1f269e25c0783ccd1bff009086a3b5b696fe89 Mon Sep 17 00:00:00 2001
From: Arnaud Le Blanc <arnaud.lb@gmail.com>
Date: Sat, 12 Nov 2011 11:56:00 +0100
Subject: [PATCH] support any expression as hash key

---
 lib/Twig/ExpressionParser.php      |   19 +++++++++++--------
 lib/Twig/Node/Expression/Array.php |    6 +++---
 2 files changed, 14 insertions(+), 11 deletions(-)

diff --git a/lib/Twig/ExpressionParser.php b/lib/Twig/ExpressionParser.php
index 33cc0dc..2fb19e4 100644
--- a/lib/Twig/ExpressionParser.php
+++ b/lib/Twig/ExpressionParser.php
@@ -166,6 +166,7 @@ class Twig_ExpressionParser
         $stream = $this->parser->getStream();
         $stream->expect(Twig_Token::PUNCTUATION_TYPE, '[', 'An array element was expected');
         $elements = array();
+        $index = 0;
         while (!$stream->test(Twig_Token::PUNCTUATION_TYPE, ']')) {
             if (!empty($elements)) {
                 $stream->expect(Twig_Token::PUNCTUATION_TYPE, ',', 'An array element must be followed by a comma');
@@ -176,7 +177,12 @@ class Twig_ExpressionParser
                 }
             }
 
-            $elements[] = $this->parseExpression();
+            $value = $this->parseExpression();
+            $key = new Twig_Node_Expression_Constant($index, $value->getLine());
+
+            array_push($elements, $key, $value);
+
+            $index += 1;
         }
         $stream->expect(Twig_Token::PUNCTUATION_TYPE, ']', 'An opened array is not properly closed');
 
@@ -198,14 +204,11 @@ class Twig_ExpressionParser
                 }
             }
 
-            if (!$stream->test(Twig_Token::STRING_TYPE) && !$stream->test(Twig_Token::NUMBER_TYPE)) {
-                $current = $stream->getCurrent();
-                throw new Twig_Error_Syntax(sprintf('A hash key must be a quoted string or a number (unexpected token "%s" of value "%s"', Twig_Token::typeToEnglish($current->getType(), $current->getLine()), $current->getValue()), $current->getLine());
-            }
-
-            $key = $stream->next()->getValue();
+            $key = $this->parseExpression();
             $stream->expect(Twig_Token::PUNCTUATION_TYPE, ':', 'A hash key must be followed by a colon (:)');
-            $elements[$key] = $this->parseExpression();
+            $value = $this->parseExpression();
+
+            array_push($elements, $key, $value);
         }
         $stream->expect(Twig_Token::PUNCTUATION_TYPE, '}', 'An opened hash is not properly closed');
 
diff --git a/lib/Twig/Node/Expression/Array.php b/lib/Twig/Node/Expression/Array.php
index 2d86082..2de67d4 100644
--- a/lib/Twig/Node/Expression/Array.php
+++ b/lib/Twig/Node/Expression/Array.php
@@ -24,16 +24,16 @@ class Twig_Node_Expression_Array extends Twig_Node_Expression
     {
         $compiler->raw('array(');
         $first = true;
-        foreach ($this->nodes as $name => $node) {
+        foreach (array_chunk($this->nodes, 2) as $entry) {
             if (!$first) {
                 $compiler->raw(', ');
             }
             $first = false;
 
             $compiler
-                ->repr($name)
+                ->subcompile($entry[0])
                 ->raw(' => ')
-                ->subcompile($node)
+                ->subcompile($entry[1])
             ;
         }
         $compiler->raw(')');
-- 
1.7.2.5