Improve error messages for XSLTProcessor::transformToDoc() (#12332)

* Improve error messages for XSLTProcessor::transformToDoc()

Also adds a relevant test file, as these branches were untested before.

Author: nielsdos

ext/xsl/tests/transformToDoc_class_exceptions.phpt

@@ -0,0 +1,32 @@
+--TEST--
+XSLTProcessor::transformToDoc class exceptions
+--EXTENSIONS--
+xsl
+simplexml
+dom
+--FILE--
+<?php
+
+$sxe = simplexml_load_file(__DIR__ . '/53965/collection.xml');
+
+$processor = new XSLTProcessor;
+$dom = new DOMDocument;
+$dom->load(__DIR__ . '/53965/collection.xsl');
+$processor->importStylesheet($dom);
+
+try {
+    $processor->transformToDoc($sxe, NonExistent::class);
+} catch (TypeError $e) {
+    echo $e->getMessage(), "\n";
+}
+
+try {
+    $processor->transformToDoc($sxe, DOMDocument::class);
+} catch (TypeError $e) {
+    echo $e->getMessage(), "\n";
+}
+
+?>
+--EXPECT--
+XSLTProcessor::transformToDoc(): Argument #2 ($returnClass) must be a valid class name or null, NonExistent given
+XSLTProcessor::transformToDoc(): Argument #2 ($returnClass) must be a class name compatible with SimpleXMLElement, DOMDocument given

ext/xsl/xsltprocessor.c

@@ -497,14 +497,14 @@ PHP_METHOD(XSLTProcessor, transformToDoc)
 	zval *id, *docp = NULL;
 	xmlDoc *newdocp;
 	xsltStylesheetPtr sheetp;
-	zend_string *ret_class = NULL;
+	zend_class_entry *ret_class = NULL;
 	xsl_object *intern;
 
 	id = ZEND_THIS;
 	intern = Z_XSL_P(id);
 	sheetp = (xsltStylesheetPtr) intern->ptr;
 
-	if (zend_parse_parameters(ZEND_NUM_ARGS(), "o|S!", &docp, &ret_class) == FAILURE) {
+	if (zend_parse_parameters(ZEND_NUM_ARGS(), "o|C!", &docp, &ret_class) == FAILURE) {
 		RETURN_THROWS();
 	}
 
@@ -513,7 +513,7 @@ PHP_METHOD(XSLTProcessor, transformToDoc)
 	if (newdocp) {
 		if (ret_class) {
 			zend_string *curclass_name;
-			zend_class_entry *curce, *ce;
+			zend_class_entry *curce;
 			php_libxml_node_object *interndoc;
 
 			curce = Z_OBJCE_P(docp);
@@ -522,16 +522,15 @@ PHP_METHOD(XSLTProcessor, transformToDoc)
 				curce = curce->parent;
 			}
 
-			ce = zend_lookup_class(ret_class);
-			if (ce == NULL || !instanceof_function(ce, curce)) {
+			if (!instanceof_function(ret_class, curce)) {
 				xmlFreeDoc(newdocp);
-				zend_argument_type_error(2, "must be a class name compatible with %s, \"%s\" given",
-					ZSTR_VAL(curclass_name), ZSTR_VAL(ret_class)
+				zend_argument_type_error(2, "must be a class name compatible with %s, %s given",
+					ZSTR_VAL(curclass_name), ZSTR_VAL(ret_class->name)
 				);
 				RETURN_THROWS();
 			}
 
-			object_init_ex(return_value, ce);
+			object_init_ex(return_value, ret_class);
 
 			interndoc = Z_LIBXML_NODE_P(return_value);
 			php_libxml_increment_doc_ref(interndoc, newdocp);
@@ -542,7 +541,6 @@ PHP_METHOD(XSLTProcessor, transformToDoc)
 	} else {
 		RETURN_FALSE;
 	}
-
 }
 /* }}} end XSLTProcessor::transformToDoc */