[2.0.1] Implement error collection for RemoveForeignElements.

- Register Generator context variable.
- Implement special substitutions for error collector.
- Also sort by order the errors came in.
- Fix line number determination bug in Lexer::create().
- Remove vestigial variables.
- Force all tag transforms to use copy(), implement serialize, unserialize algorithm for copy() in tokens.

git-svn-id: http://htmlpurifier.org/svnroot/htmlpurifier/trunk@1238 48356398-32a2-884e-a903-53898d9a118a

tests/HTMLPurifier/Lexer/DirectLex_ErrorsTest.php

@@ -1,21 +1,11 @@
 <?php
 
+require_once 'HTMLPurifier/ErrorsHarness.php';
 require_once 'HTMLPurifier/Lexer/DirectLex.php';
 
-class HTMLPurifier_Lexer_DirectLex_ErrorsTest extends UnitTestCase
+class HTMLPurifier_Lexer_DirectLex_ErrorsTest extends HTMLPurifier_ErrorsHarness
 {
     
-    var $config, $context;
-    var $collector;
-    
-    function setup() {
-        $this->config = HTMLPurifier_Config::create(array('Core.CollectErrors' => true));
-        $this->context = new HTMLPurifier_Context();
-        generate_mock_once('HTMLPurifier_ErrorCollector');
-        $this->collector = new HTMLPurifier_ErrorCollectorMock($this);
-        $this->context->register('ErrorCollector', $this->collector);
-    }
-    
     function invoke($input) {
         $lexer = new HTMLPurifier_Lexer_DirectLex();
         $lexer->tokenizeHTML($input, $this->config, $this->context);
@@ -26,10 +16,6 @@ class HTMLPurifier_Lexer_DirectLex_ErrorsTest extends UnitTestCase
         $lexer->parseAttributeString($input, $this->config, $this->context);
     }
     
-    function expectErrorCollection($severity, $msg) {
-        $this->collector->expectOnce('send', array($severity, $msg));
-    }
-    
     function testUnclosedComment() {
         $this->expectErrorCollection(E_WARNING, 'Lexer: Unclosed comment');
         $this->invoke('<!-- >');