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1 // Copyright 2015 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "src/wasm/wasm-result.h"
6 
7 #include "src/factory.h"
8 #include "src/heap/heap.h"
9 #include "src/isolate-inl.h"
10 #include "src/objects.h"
11 
12 #include "src/base/platform/platform.h"
13 
14 namespace v8 {
15 namespace internal {
16 namespace wasm {
17 
operator <<(std::ostream & os,const ErrorCode & error_code)18 std::ostream& operator<<(std::ostream& os, const ErrorCode& error_code) {
19   switch (error_code) {
20     case kSuccess:
21       os << "Success";
22       break;
23     default:  // TODO(titzer): render error codes
24       os << "Error";
25       break;
26   }
27   return os;
28 }
29 
Error(const char * format,...)30 void ErrorThrower::Error(const char* format, ...) {
31   // Only report the first error.
32   if (error()) return;
33 
34   char buffer[256];
35   va_list arguments;
36   va_start(arguments, format);
37   base::OS::VSNPrintF(buffer, 255, format, arguments);
38   va_end(arguments);
39 
40   std::ostringstream str;
41   if (context_ != nullptr) {
42     str << context_ << ": ";
43   }
44   str << buffer;
45 
46   message_ = isolate_->factory()->NewStringFromAsciiChecked(str.str().c_str());
47 }
48 
~ErrorThrower()49 ErrorThrower::~ErrorThrower() {
50   if (error() && !isolate_->has_pending_exception()) {
51     isolate_->ScheduleThrow(*message_);
52   }
53 }
54 }  // namespace wasm
55 }  // namespace internal
56 }  // namespace v8
57