Better error handling in src/handlers.rs

Introduces error codes that are shared between JS/RS

Fixes #526.

1 files changed, 40 insertions, 1 deletions

diff --git a/src/msg.fbs b/src/msg.fbs
index 89ecfec45..d1629ba69 100644
--- a/src/msg.fbs
+++ b/src/msg.fbs
@@ -1,6 +1,6 @@
 namespace deno;
 
-union Any { 
+union Any {
   Start,
   StartRes,
   CodeFetch,
@@ -17,8 +17,47 @@ union Any {
   WriteFileSync,
 }
 
+enum ErrorKind: byte {
+  NoError = 0,
+
+  // io errors
+
+  NotFound,
+  PermissionDenied,
+  ConnectionRefused,
+  ConnectionReset,
+  ConnectionAborted,
+  NotConnected,
+  AddrInUse,
+  AddrNotAvailable,
+  BrokenPipe,
+  AlreadyExists,
+  WouldBlock,
+  InvalidInput,
+  InvalidData,
+  TimedOut,
+  Interrupted,
+  WriteZero,
+  Other,
+  UnexpectedEof,
+
+  // url errors
+
+  EmptyHost,
+  IdnaError,
+  InvalidPort,
+  InvalidIpv4Address,
+  InvalidIpv6Address,
+  InvalidDomainCharacter,
+  RelativeUrlWithoutBase,
+  RelativeUrlWithCannotBeABaseBase,
+  SetHostOnCannotBeABaseUrl,
+  Overflow,
+}
+
 table Base {
   cmd_id: uint32;
+  error_kind: ErrorKind = NoError;
   error: string;
   msg: Any;
 }