1 files changed, 63 insertions, 0 deletions
diff --git a/third_party/wasm2c/src/result.h b/third_party/wasm2c/src/result.h
new file mode 100644
index 0000000000..a40faab78b
--- /dev/null
+++ b/third_party/wasm2c/src/result.h
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2017 WebAssembly Community Group participants
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef WABT_RESULT_H_
+#define WABT_RESULT_H_
+
+namespace wabt {
+
+struct Result {
+  enum Enum {
+    Ok,
+    Error,
+  };
+
+  Result() : Result(Ok) {}
+  Result(Enum e) : enum_(e) {}
+  operator Enum() const { return enum_; }
+  Result& operator|=(Result rhs);
+
+ private:
+  Enum enum_;
+};
+
+inline Result operator|(Result lhs, Result rhs) {
+  return (lhs == Result::Error || rhs == Result::Error) ? Result::Error
+                                                        : Result::Ok;
+}
+
+inline Result& Result::operator|=(Result rhs) {
+  enum_ = *this | rhs;
+  return *this;
+}
+
+inline bool Succeeded(Result result) {
+  return result == Result::Ok;
+}
+inline bool Failed(Result result) {
+  return result == Result::Error;
+}
+
+#define CHECK_RESULT(expr)          \
+  do {                              \
+    if (Failed(expr)) {             \
+      return ::wabt::Result::Error; \
+    }                               \
+  } while (0)
+
+}  // namespace wabt
+
+#endif  // WABT_RESULT_H_