Compatibility changes to support Julia 0.6 (#174)

* Avoid using `@isdefined` on Julia 0.6

Not supported in Compat: JuliaLang/Compat.jl#402

* Support Sys.is<os> on Julia 0.6

* Add Julia 0.6 to CI

Note: Julia 0.5 was dropped from the CI as the REQUIRE file already
specifies a minimum of Julia 0.6.

Author: omus

.travis.yml

@@ -15,7 +15,7 @@ os:
   - linux
 
 julia:
-  - 0.5
+  - 0.6
   - nightly
 
 services:

REQUIRE

@@ -4,4 +4,5 @@ DataFrames
 CategoricalArrays 0.2
 WeakRefStrings 0.3.0
 DecFP 0.3.0
-Missings
+Missings
+Compat 0.27

appveyor.yml

@@ -1,7 +1,7 @@
 environment:
   matrix:
-  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x86/0.5/julia-0.5-latest-win32.exe"
-  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x64/0.5/julia-0.5-latest-win64.exe"
+  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x86/0.6/julia-0.6-latest-win32.exe"
+  - JULIA_URL: "https://julialang-s3.julialang.org/bin/winnt/x64/0.6/julia-0.6-latest-win64.exe"
   - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x86/julia-latest-win32.exe"
   - JULIA_URL: "https://julialangnightlies-s3.julialang.org/bin/winnt/x64/julia-latest-win64.exe"
 

src/API.jl

@@ -25,6 +25,7 @@ Contents
 module API
 
 using WeakRefStrings
+import Compat: @__MODULE__, Sys
 
 if VERSION < v"0.7.0-DEV.2575"
     const Dates = Base.Dates

src/ODBC.jl

@@ -2,6 +2,7 @@ __precompile__(true)
 module ODBC
 
 using DataStreams, Missings, CategoricalArrays, WeakRefStrings, DataFrames
+import Compat: Sys
 
 export Data, DataFrame, odbcdf
 
@@ -199,4 +200,4 @@ function ODBCFreeStmt!(stmt)
     ODBC.API.SQLFreeStmt(stmt, ODBC.API.SQL_RESET_PARAMS)
 end
 
-end #ODBC module
+end #ODBC module

src/types.jl

@@ -3,7 +3,7 @@ using DecFP, Missings, WeakRefStrings
 # Link to ODBC Driver Manager (system-dependent)
 let
     global odbc_dm
-    if !@isdefined odbc_dm
+    if !isdefined(@__MODULE__, :odbc_dm)
         Sys.islinux()   && (lib_choices = ["libodbc", "libodbc.so", "libodbc.so.1", "libodbc.so.2", "libodbc.so.3"])
         Sys.iswindows() && (lib_choices = ["odbc32"])
         Sys.isapple()   && (lib_choices = ["libodbc.2.dylib","libodbc.dylib","libiodbc","libiodbc.dylib","libiodbc.1.dylib","libiodbc.2.dylib","libiodbc.3.dylib"])