1 files changed, 63 insertions, 0 deletions
diff --git a/src/propagation.cpp b/src/propagation.cpp
new file mode 100644
index 0000000..56f8394
--- /dev/null
+++ b/src/propagation.cpp
@@ -0,0 +1,63 @@
+#include <opentracing/propagation.h>
+
+namespace opentracing {
+BEGIN_OPENTRACING_ABI_NAMESPACE
+namespace {
+class PropagationErrorCategory : public std::error_category {
+ public:
+  // Needed to fix bug in macOS build
+  // (https://travis-ci.org/isaachier/hunter/jobs/281868518).
+  // See https://stackoverflow.com/a/7411708/1930331 for justification.
+  PropagationErrorCategory() {}
+
+  const char* name() const noexcept override {
+    return "OpenTracingPropagationError";
+  }
+
+  std::error_condition default_error_condition(int code) const
+      noexcept override {
+    if (code == invalid_span_context_error.value()) {
+      return std::make_error_condition(std::errc::not_supported);
+    }
+    if (code == invalid_carrier_error.value()) {
+      return std::make_error_condition(std::errc::invalid_argument);
+    }
+    if (code == span_context_corrupted_error.value()) {
+      return std::make_error_condition(std::errc::invalid_argument);
+    }
+    if (code == key_not_found_error.value()) {
+      return std::make_error_condition(std::errc::invalid_argument);
+    }
+    if (code == lookup_key_not_supported_error.value()) {
+      return std::make_error_condition(std::errc::not_supported);
+    }
+    return std::error_condition(code, *this);
+  }
+
+  std::string message(int code) const override {
+    if (code == invalid_span_context_error.value()) {
+      return "opentracing: SpanContext type incompatible with tracer";
+    }
+    if (code == invalid_carrier_error.value()) {
+      return "opentracing: Invalid Inject/Extract carrier";
+    }
+    if (code == span_context_corrupted_error.value()) {
+      return "opentracing: SpanContext data corrupted in Extract carrier";
+    }
+    if (code == key_not_found_error.value()) {
+      return "opentracing: SpanContext key not found";
+    }
+    if (code == lookup_key_not_supported_error.value()) {
+      return "opentracing: Lookup for the given key is not supported";
+    }
+    return "opentracing: unknown propagation error";
+  }
+};
+}  // anonymous namespace
+
+const std::error_category& propagation_error_category() {
+  static const PropagationErrorCategory error_category;
+  return error_category;
+}
+END_OPENTRACING_ABI_NAMESPACE
+}  // namespace opentracing