From 7dcebdd9275a1983af65b033ec0520852429e18f Mon Sep 17 00:00:00 2001
From: Stefan Siegl <stesie@brokenpipe.de>
Date: Sun, 3 Jul 2016 22:52:50 +0200
Subject: [PATCH] forward exceptions thrown in module loader

---
 tests/commonjs_exception_001.phpt | 35 +++++++++++++++++++++++++++++++
 v8js_methods.cc                   | 12 ++++++++---
 2 files changed, 44 insertions(+), 3 deletions(-)
 create mode 100644 tests/commonjs_exception_001.phpt

diff --git a/tests/commonjs_exception_001.phpt b/tests/commonjs_exception_001.phpt
new file mode 100644
index 0000000..4f6a6d7
--- /dev/null
+++ b/tests/commonjs_exception_001.phpt
@@ -0,0 +1,35 @@
+--TEST--
+Test V8Js::setModuleLoader : Forward exceptions
+--SKIPIF--
+<?php require_once(dirname(__FILE__) . '/skipif.inc'); ?>
+--FILE--
+<?php
+
+$JS = <<< EOT
+var foo = require("./test");
+EOT;
+
+$v8 = new V8Js();
+$v8->setModuleLoader(function($module) {
+    throw new Exception('some exception');
+});
+
+$v8->executeString($JS, 'module.js', V8Js::FLAG_PROPAGATE_PHP_EXCEPTIONS);
+?>
+===EOF===
+--EXPECTF--
+Fatal error: Uncaught Exception: some exception in %s%ecommonjs_exception_001.php:9
+Stack trace:
+#0 [internal function]: {closure}('test')
+#1 %s%ecommonjs_exception_001.php(12): V8Js->executeString('var foo = requi...', 'module.js', 4)
+#2 {main}
+
+Next V8JsScriptException: module.js:1: Exception: some exception in %s%ecommonjs_exception_001.php:9
+Stack trace:
+#0 [internal function]: {closure}('test')
+#1 %s%ecommonjs_exception_001.php(12): V8Js->executeString('var foo = requi...', 'module.js', 4)
+#2 {main} in %s%ecommonjs_exception_001.php:12
+Stack trace:
+#0 %s%ecommonjs_exception_001.php(12): V8Js->executeString('var foo = requi...', 'module.js', 4)
+#1 {main}
+  thrown in %s%ecommonjs_exception_001.php on line 12
diff --git a/v8js_methods.cc b/v8js_methods.cc
index 4365a87..8996b6c 100644
--- a/v8js_methods.cc
+++ b/v8js_methods.cc
@@ -390,9 +390,15 @@ V8JS_METHOD(require)
 		efree(normalised_module_id);
 		efree(normalised_path);
 
-		// Clear the PHP exception and throw it in V8 instead
-		zend_clear_exception(TSRMLS_C);
-		info.GetReturnValue().Set(isolate->ThrowException(V8JS_SYM("Module loader callback exception")));
+		if (c->flags & V8JS_FLAG_PROPAGATE_PHP_EXCEPTIONS) {
+			zval tmp_zv;
+			ZVAL_OBJ(&tmp_zv, EG(exception));
+			info.GetReturnValue().Set(isolate->ThrowException(zval_to_v8js(&tmp_zv, isolate)));
+			zend_clear_exception();
+		} else {
+			v8js_terminate_execution(isolate);
+		}
+
 		return;
 	}