Initial import of v8-native WASM.

src/wasm/wasm-result.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/wasm/wasm-result.h"
+
+#include "src/factory.h"
+#include "src/heap/heap.h"
+#include "src/isolate.h"
+#include "src/objects-inl.h"  // TODO(mstarzinger): Temporary cycle breaker!
+#include "src/objects.h"
+
+#include "src/base/platform/platform.h"
+
+namespace v8 {
+namespace internal {
+namespace wasm {
+
+std::ostream& operator<<(std::ostream& os, const ErrorCode& error_code) {
+  switch (error_code) {
+    case kSuccess:
+      os << "Success";
+      break;
+    default:  // TODO(titzer): render error codes
+      os << "Error";
+      break;
+  }
+  return os;
+}
+
+
+void ErrorThrower::Error(const char* format, ...) {
+  if (error_) return;  // only report the first error.
+  error_ = true;
+  char buffer[256];
+
+  va_list arguments;
+  va_start(arguments, format);
+  base::OS::VSNPrintF(buffer, 255, format, arguments);
+  va_end(arguments);
+
+  std::ostringstream str;
+  if (context_ != nullptr) {
+    str << context_ << ": ";
+  }
+  str << buffer;
+
+  isolate_->ScheduleThrow(
+      *isolate_->factory()->NewStringFromAsciiChecked(str.str().c_str()));
+}
+}  // namespace wasm
+}  // namespace internal
+}  // namespace v8