Index: third_party/WebKit/Source/bindings/core/v8/GeneratedCodeHelper.h |
diff --git a/third_party/WebKit/Source/bindings/core/v8/GeneratedCodeHelper.h b/third_party/WebKit/Source/bindings/core/v8/GeneratedCodeHelper.h |
index 2bb7093baae50d29d70e7939b8a5b4ae93076732..1ee06ad2081f4f43c4515f8bd4357344631fa73c 100644 |
--- a/third_party/WebKit/Source/bindings/core/v8/GeneratedCodeHelper.h |
+++ b/third_party/WebKit/Source/bindings/core/v8/GeneratedCodeHelper.h |
@@ -11,18 +11,48 @@ |
#ifndef GeneratedCodeHelper_h |
#define GeneratedCodeHelper_h |
+#include "bindings/core/v8/ExceptionState.h" |
+#include "bindings/core/v8/V8Binding.h" |
#include "core/CoreExport.h" |
#include "wtf/PassRefPtr.h" |
#include <v8.h> |
namespace blink { |
+class ScriptState; |
class SerializedScriptValue; |
CORE_EXPORT void v8ConstructorAttributeGetter(v8::Local<v8::Name> propertyName, const v8::PropertyCallbackInfo<v8::Value>&); |
CORE_EXPORT v8::Local<v8::Value> v8Deserialize(v8::Isolate*, PassRefPtr<SerializedScriptValue>); |
+// ExceptionToRejectPromiseScope converts a possible exception to a reject |
+// promise and returns the promise instead of throwing the exception. |
+// |
+// Promise-returning DOM operations are required to always return a promise |
+// and to never throw an exception. |
+// See also http://heycam.github.io/webidl/#es-operations |
+class CORE_EXPORT ExceptionToRejectPromiseScope { |
+ STACK_ALLOCATED(); |
+public: |
+ ExceptionToRejectPromiseScope(const v8::FunctionCallbackInfo<v8::Value>& info, ScriptState* scriptState, ExceptionState& exceptionState) |
+ : m_info(info) |
+ , m_scriptState(scriptState) |
+ , m_exceptionState(exceptionState) { } |
+ ~ExceptionToRejectPromiseScope() |
+ { |
+ if (!m_exceptionState.hadException()) |
+ return; |
+ |
+ v8SetReturnValue(m_info, m_exceptionState.reject(m_scriptState).v8Value()); |
+ } |
+ |
+private: |
+ const v8::FunctionCallbackInfo<v8::Value>& m_info; |
+ ScriptState* m_scriptState; |
+ ExceptionState& m_exceptionState; |
+}; |
+ |
} // namespace blink |
#endif // GeneratedCodeHelper_h |