Introduced a struct for error messages.

Project.toml

@@ -1,7 +1,7 @@
 name = "InteractiveBrokers"
 uuid = "f310f2d2-a263-11e8-3998-47bd686f18f7"
 authors = ["Luca Billi <[email protected]>", "Olivier Milla <[email protected]>"]
-version = "0.22.0"
+version = "0.23.0"
 
 [deps]
 Sockets = "6462fe0b-24de-5631-8697-dd941f90decc"

README.md

@@ -55,8 +55,8 @@ using InteractiveBrokers
 
 wrap = InteractiveBrokers.Wrapper(
          # Customized methods go here
-         error= (id, errorCode, errorString, advancedOrderRejectJson) ->
-                  println("Error: $(something(id, "NA")) $errorCode $errorString $advancedOrderRejectJson"),
+         error= (err) ->
+                  println("Error: $(something($(err.id), "NA")) $(err.errorCode) $(err.errorString) $(err.advancedOrderRejectJson)"),
 
          nextValidId= (orderId) -> println("Next OrderId: $orderId"),
 

data/wrapper_signatures.jl

@@ -36,7 +36,8 @@ execDetails(reqId::Int, contract::Contract, execution::Execution)
 
 execDetailsEnd(reqId::Int)
 
-error(id::Union{Int,Nothing}, errorCode::Union{Int,Nothing}, errorString::String, advancedOrderRejectJson::String)
+error(err::IbkrErrorMessage)
+#error(id::Union{Int,Nothing}, errorCode::Union{Int,Nothing}, errorString::String, advancedOrderRejectJson::String)
 
 updateMktDepth(id::Int, position::Int, operation::Int, side::Int, price::Float64, size::Float64)
 

src/InteractiveBrokers.jl

@@ -4,6 +4,7 @@ using Sockets
 
 include("client.jl")
 include("enums.jl")
+include("errors.jl")
 include("types.jl")
 include("types_condition.jl")
 include("types_mutable.jl")

src/errors.jl

@@ -0,0 +1,6 @@
+struct IbkrErrorMessage <: Exception
+    id::Union{Int,Nothing}
+    errorCode::Union{Int,Nothing}
+    errorString::String
+    advancedOrderRejectJson::String
+end

src/wrapper.jl

@@ -218,12 +218,12 @@ function simple_wrap()
 
     execDetailsEnd= (reqId::Int) -> println("execDetailsEnd: $reqId"),
 
-    error= (id::Union{Int,Nothing}, errorCode::Union{Int,Nothing}, errorString::String, advancedOrderRejectJson::String) ->
+    error= (err::IbkrErrorMessage) ->
                      println("error: ",
-                             something(id, "NA"), " ",
-                             something(errorCode, "NA"), " ",
-                             errorString, " ",
-                             advancedOrderRejectJson),
+                             something(err.id, "NA"), " ",
+                             something(err.errorCode, "NA"), " ",
+                             err.errorString, " ",
+                             err.advancedOrderRejectJson),
 
     updateMktDepth= (id::Int, position::Int, operation::Int, side::Int, price::Float64, size::Float64) ->
                       println("mktDepth: $id $position $operation $side $price $size"),