Merge pull request #300 from LoopPerfect/feature/optional-version-in-add

 * Version now optional in add

Author: nikhedonia

buckaroo-tests/Command.fs

@@ -29,6 +29,16 @@ let ``Command.parse works correctly`` () =
     (Result.Ok (Command.UpgradeDependencies [], verboseLoggingLevel), "  upgrade  --verbose  ");
     (Result.Ok (Command.UpgradeDependencies [ abcDef ], verboseLoggingLevel), "upgrade  abc/def --verbose ");
 
+    (
+      Result.Ok
+        (
+          Command.AddDependencies
+            [ { Package = ijkXyz; Constraint = Constraint.wildcard; Targets = None } ],
+          defaultLoggingLevel
+        ),
+      "add github.com/ijk/xyz  "
+    );
+
     (
       Result.Ok (Command.UpgradeDependencies [ abcDef; ijkXyz ], verboseLoggingLevel),
       "upgrade  abc/def github.com/ijk/xyz --verbose "

buckaroo/Command.fs

@@ -87,12 +87,38 @@ module Command =
     return Quickstart
   }
 
+  let private packageToAddParser =
+    parse {
+      let! p = PackageIdentifier.parser
+
+      return!
+        parse {
+          do! CharParsers.skipString "@"
+          let! c = Constraint.parser
+
+          return
+            {
+              Package = p;
+              Constraint = c;
+              Targets = None;
+            }
+        } <|>
+        parse {
+          return
+            {
+              Package = p;
+              Constraint = Constraint.wildcard;
+              Targets = None;
+            }
+        }
+    }
+
   let addDependenciesParser = parse {
     do! CharParsers.spaces
     do! CharParsers.skipString "add"
     do! CharParsers.spaces1
 
-    let! deps = Primitives.sepEndBy1 Dependency.parser CharParsers.spaces1
+    let! deps = Primitives.sepEndBy1 packageToAddParser CharParsers.spaces1
 
     return AddDependencies deps
   }