Move V8 to external/v8
Change-Id: If68025d67453785a651c5dfb34fad298c16676a4
diff --git a/src/messages.cc b/src/messages.cc
new file mode 100644
index 0000000..e16b1b2
--- /dev/null
+++ b/src/messages.cc
@@ -0,0 +1,177 @@
+
+// Copyright 2006-2008 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#include "v8.h"
+
+#include "api.h"
+#include "execution.h"
+#include "spaces-inl.h"
+#include "top.h"
+
+namespace v8 {
+namespace internal {
+
+
+// If no message listeners have been registered this one is called
+// by default.
+void MessageHandler::DefaultMessageReport(const MessageLocation* loc,
+ Handle<Object> message_obj) {
+ SmartPointer<char> str = GetLocalizedMessage(message_obj);
+ if (loc == NULL) {
+ PrintF("%s\n", *str);
+ } else {
+ HandleScope scope;
+ Handle<Object> data(loc->script()->name());
+ SmartPointer<char> data_str;
+ if (data->IsString())
+ data_str = Handle<String>::cast(data)->ToCString(DISALLOW_NULLS);
+ PrintF("%s:%i: %s\n", *data_str ? *data_str : "<unknown>",
+ loc->start_pos(), *str);
+ }
+}
+
+
+void MessageHandler::ReportMessage(const char* msg) {
+ PrintF("%s\n", msg);
+}
+
+
+Handle<Object> MessageHandler::MakeMessageObject(
+ const char* type,
+ MessageLocation* loc,
+ Vector< Handle<Object> > args,
+ Handle<String> stack_trace) {
+ // Build error message object
+ v8::HandleScope scope; // Instantiate a closeable HandleScope for EscapeFrom.
+ Handle<Object> type_str = Factory::LookupAsciiSymbol(type);
+ Handle<Object> array = Factory::NewJSArray(args.length());
+ for (int i = 0; i < args.length(); i++)
+ SetElement(Handle<JSArray>::cast(array), i, args[i]);
+
+ Handle<JSFunction> fun(Top::global_context()->make_message_fun());
+ int start, end;
+ Handle<Object> script;
+ if (loc) {
+ start = loc->start_pos();
+ end = loc->end_pos();
+ script = GetScriptWrapper(loc->script());
+ } else {
+ start = end = 0;
+ script = Factory::undefined_value();
+ }
+ Handle<Object> start_handle(Smi::FromInt(start));
+ Handle<Object> end_handle(Smi::FromInt(end));
+ Handle<Object> stack_trace_val = stack_trace.is_null()
+ ? Factory::undefined_value()
+ : Handle<Object>::cast(stack_trace);
+ const int argc = 6;
+ Object** argv[argc] = { type_str.location(),
+ array.location(),
+ start_handle.location(),
+ end_handle.location(),
+ script.location(),
+ stack_trace_val.location() };
+
+ // Setup a catch handler to catch exceptions in creating the message. This
+ // handler is non-verbose to avoid calling MakeMessage recursively in case of
+ // an exception.
+ v8::TryCatch catcher;
+ catcher.SetVerbose(false);
+ catcher.SetCaptureMessage(false);
+
+ // Format the message.
+ bool caught_exception = false;
+ Handle<Object> message =
+ Execution::Call(fun, Factory::undefined_value(), argc, argv,
+ &caught_exception);
+
+ // If creating the message (in JS code) resulted in an exception, we
+ // skip doing the callback. This usually only happens in case of
+ // stack overflow exceptions being thrown by the parser when the
+ // stack is almost full.
+ if (caught_exception) return Handle<Object>();
+
+ return message.EscapeFrom(&scope);
+}
+
+
+void MessageHandler::ReportMessage(MessageLocation* loc,
+ Handle<Object> message) {
+ v8::Local<v8::Message> api_message_obj = v8::Utils::MessageToLocal(message);
+
+ v8::NeanderArray global_listeners(Factory::message_listeners());
+ int global_length = global_listeners.length();
+ if (global_length == 0) {
+ DefaultMessageReport(loc, message);
+ } else {
+ for (int i = 0; i < global_length; i++) {
+ HandleScope scope;
+ if (global_listeners.get(i)->IsUndefined()) continue;
+ v8::NeanderObject listener(JSObject::cast(global_listeners.get(i)));
+ Handle<Proxy> callback_obj(Proxy::cast(listener.get(0)));
+ v8::MessageCallback callback =
+ FUNCTION_CAST<v8::MessageCallback>(callback_obj->proxy());
+ Handle<Object> callback_data(listener.get(1));
+ callback(api_message_obj, v8::Utils::ToLocal(callback_data));
+ }
+ }
+}
+
+
+Handle<String> MessageHandler::GetMessage(Handle<Object> data) {
+ Handle<String> fmt_str = Factory::LookupAsciiSymbol("FormatMessage");
+ Handle<JSFunction> fun =
+ Handle<JSFunction>(
+ JSFunction::cast(Top::builtins()->GetProperty(*fmt_str)));
+ Object** argv[1] = { data.location() };
+
+ bool caught_exception;
+ Handle<Object> result =
+ Execution::TryCall(fun, Top::builtins(), 1, argv, &caught_exception);
+
+ if (caught_exception || !result->IsString()) {
+ return Factory::LookupAsciiSymbol("<error>");
+ }
+ Handle<String> result_string = Handle<String>::cast(result);
+ // A string that has been obtained from JS code in this way is
+ // likely to be a complicated ConsString of some sort. We flatten it
+ // here to improve the efficiency of converting it to a C string and
+ // other operations that are likely to take place (see GetLocalizedMessage
+ // for example).
+ FlattenString(result_string);
+ return result_string;
+}
+
+
+SmartPointer<char> MessageHandler::GetLocalizedMessage(Handle<Object> data) {
+ HandleScope scope;
+ return GetMessage(data)->ToCString(DISALLOW_NULLS);
+}
+
+
+} } // namespace v8::internal