Merge pull request #242 from fsprojects/issue-240

Issue 240

Author: Matt

RELEASE_NOTES.md

@@ -1,3 +1,7 @@
+##### 0.8.1 - October 10 2017
+
+* Fixed https://github.com/fsprojects/FSharpLint/issues/240
+
 ##### 0.8.0 - September 05 2017
 
 * Updated `FSharp.Compiler.Service`

src/FSharpLint.Core/Framework/ParseFile.fs

@@ -93,9 +93,10 @@ module ParseFile =
         parse configuration file source (checker, projectOptions)
 
     /// Parses source code using `FSharp.Compiler.Service`.
-    let parseSource source configuration (checker:FSharpChecker) =
-        let file = "test.fsx"
-        
-        let options = getProjectOptionsFromScript checker file source
+    let parseSourceFile fileName source configuration (checker:FSharpChecker) =        
+        let options = getProjectOptionsFromScript checker fileName source
 
-        parse configuration file source (checker, options)
+        parse configuration fileName source (checker, options)
+        
+    let parseSource source configuration (checker:FSharpChecker) = 
+        parseSourceFile "test.fsx" source configuration checker

src/FSharpLint.Core/Rules/NameConventions.fs

@@ -410,6 +410,15 @@ module NameConventions =
         | SynSimplePat.Id(ident, _, _, _, _, _) -> Some(ident)
         | SynSimplePat.Typed(p, _, _) -> identFromSimplePat p
         | SynSimplePat.Attrib(_) -> None
+
+    /// Is module name implicitly created from file name?
+    let private isImplicitModule (SynModuleOrNamespace.SynModuleOrNamespace(longIdent, _, isModule, _, _, _, _, range)) =
+        let zeroLengthRange (r:range) =
+            (r.EndColumn - r.StartColumn) = 0 && r.StartLine = r.EndLine
+
+        // Check the identifiers in the module name have no length.
+        // Not ideal but there's no attribute in the AST indicating the module is implicit from the file name.
+        isModule && longIdent |> List.forall (fun x -> zeroLengthRange x.idRange)
 
     let analyser (args: AnalyserArgs) : unit =
         let syntaxArray, skipArray = args.SyntaxArray, args.SkipArray
@@ -441,12 +450,13 @@ module NameConventions =
             let checkRule = checkNamingRule i
 
             match syntaxArray.[i].Actual with
-            | AstNode.ModuleOrNamespace(SynModuleOrNamespace.SynModuleOrNamespace(identifier, _, isModule, _, _, _, _, _)) ->
-                let checkIdent =
-                    if isModule then checkRule rules.ModuleNames
-                    else checkRule rules.NamespaceNames
+            | AstNode.ModuleOrNamespace(SynModuleOrNamespace.SynModuleOrNamespace(identifier, _, isModule, _, _, _, _, _) as synModule) ->
+                if not <| isImplicitModule synModule then
+                    let checkIdent =
+                        if isModule then checkRule rules.ModuleNames
+                        else checkRule rules.NamespaceNames
 
-                identifier |> List.collect checkIdent |> List.iter args.Info.Suggest
+                    identifier |> List.collect checkIdent |> List.iter args.Info.Suggest
             | AstNode.UnionCase(SynUnionCase.UnionCase(_, identifier, _, _, _, _)) ->
                 checkRule rules.UnionCasesNames identifier |> List.iter args.Info.Suggest
             | AstNode.Field(SynField.Field(_, _, identifier, _, _, _, _, _)) ->

tests/FSharpLint.Core.Tests/Rules/TestNameConventionRules.fs

@@ -2,6 +2,7 @@
 
 open NUnit.Framework
 open FSharpLint.Rules.NameConventions
+open FSharpLint.Framework
 open FSharpLint.Framework.Configuration
 
 let config =
@@ -63,6 +64,24 @@ type TestNameConventionRules() =
     member this.``Performance of naming analyser``() =
         Assert.Less(this.TimeAnalyser(100, defaultConfiguration), 20)
 
+    /// Regression test for: https://github.com/fsprojects/FSharpLint/issues/240
+    [<Test>]
+    member this.``Linter must not complain about naming of fsx file``() =
+        this.Parse(input = """
+type MyClass2() as this =
+  member this.PrintMessage() = ()""", fileName = "3i-3.fsx")
+
+        this.AssertNoWarnings()
+
+    /// Regression test for: https://github.com/fsprojects/FSharpLint/issues/240
+    [<Test>]
+    member this.``Linter must not complain about naming of fsx file with long name``() =
+        this.Parse(input = """
+type MyClass2() as this =
+  member this.PrintMessage() = ()""", fileName = "foo.3i-3.fsx")
+
+        this.AssertNoWarnings()
+
     [<Test>]
     member __.IsPascalCase() =
         Assert.IsTrue(isPascalCase "DogInBin")

tests/FSharpLint.Core.Tests/Rules/TestRuleBase.fs

@@ -76,7 +76,7 @@ type TestRuleBase(analyser, ?analysers) =
 
         result
 
-    member __.Parse(input:string, ?overrideAnalysers, ?checkInput, ?fsharpVersion): unit = 
+    member __.Parse(input:string, ?overrideAnalysers, ?checkInput, ?fsharpVersion, ?fileName): unit = 
         let config =
             match overrideAnalysers with
             | Some(overrideAnalysers) -> 
@@ -91,8 +91,13 @@ type TestRuleBase(analyser, ?analysers) =
               Suggest = postSuggestion
               FSharpVersion = version
               Text = input }
+
+        let parseResults =
+            match fileName with
+            | Some(fileName) -> parseSourceFile fileName input config (FSharpChecker.Create())
+            | None -> parseSource input config (FSharpChecker.Create())
 
-        match parseSource input config (FSharpChecker.Create()) with
+        match parseResults with
         | Success(parseInfo) ->
             let (syntaxArray, skipArray) = AbstractSyntaxArray.astToArray parseInfo.Ast
             analyser