Move compilation error handling into a separate class.

src/pending-compilation-error-handler.cc

+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "src/pending-compilation-error-handler.h"
+
+#include "src/debug.h"
+#include "src/handles.h"
+#include "src/isolate.h"
+#include "src/messages.h"
+
+namespace v8 {
+namespace internal {
+
+void PendingCompilationErrorHandler::ThrowPendingError(Isolate* isolate,
+                                                       Handle<Script> script) {
+  if (!has_pending_error_) return;
+  MessageLocation location(script, start_position_, end_position_);
+  Factory* factory = isolate->factory();
+  bool has_arg = arg_ != NULL || char_arg_ != NULL;
+  Handle<FixedArray> elements = factory->NewFixedArray(has_arg ? 1 : 0);
+  if (arg_ != NULL) {
+    Handle<String> arg_string = arg_->string();
+    elements->set(0, *arg_string);
+  } else if (char_arg_ != NULL) {
+    Handle<String> arg_string =
+        factory->NewStringFromUtf8(CStrVector(char_arg_)).ToHandleChecked();
+    elements->set(0, *arg_string);
+  }
+  isolate->debug()->OnCompileError(script);
+
+  Handle<JSArray> array = factory->NewJSArrayWithElements(elements);
+  Handle<Object> error;
+
+  switch (error_type_) {
+    case kReferenceError:
+      error = factory->NewReferenceError(message_, array);
+      break;
+    case kSyntaxError:
+      error = factory->NewSyntaxError(message_, array);
+      break;
+  }
+
+  Handle<JSObject> jserror = Handle<JSObject>::cast(error);
+
+  Handle<Name> key_start_pos = factory->error_start_pos_symbol();
+  JSObject::SetProperty(jserror, key_start_pos,
+                        handle(Smi::FromInt(location.start_pos()), isolate),
+                        SLOPPY).Check();
+
+  Handle<Name> key_end_pos = factory->error_end_pos_symbol();
+  JSObject::SetProperty(jserror, key_end_pos,
+                        handle(Smi::FromInt(location.end_pos()), isolate),
+                        SLOPPY).Check();
+
+  Handle<Name> key_script = factory->error_script_symbol();
+  JSObject::SetProperty(jserror, key_script, script, SLOPPY).Check();
+
+  isolate->Throw(*error, &location);
+}
+}
+}  // namespace v8::internal