add comment column header and process converter

src/Core/Conversion.fs

@@ -317,6 +317,14 @@ module ProcessParsing =
             |> Some
         | _ -> None
 
+    let tryGetCommentGetter (generalI : int) (header : CompositeHeader) =
+        match header with
+        | CompositeHeader.Comment c ->
+            fun (matrix : System.Collections.Generic.Dictionary<(int * int),CompositeCell>) i ->
+                Comment(c,matrix.[generalI,i].AsFreeText)
+            |> Some
+        | _ -> None
+
     /// Given the header sequence of an ArcTable, returns a function for parsing each row of the table to a process
     let getProcessGetter (processNameRoot : string) (headers : CompositeHeader seq) =
 
@@ -366,6 +374,11 @@ module ProcessParsing =
             headers
             |> Seq.tryPick (fun (generalI,header) -> tryGetProtocolVersionGetter generalI header)
 
+        let commentGetters = 
+            headers
+            |> Seq.choose (fun (generalI,header) -> tryGetCommentGetter generalI header)
+            |> Seq.toList
+
         // This is a little more complex, as data and material objects can't contain characteristics. So in the case where the input of the table is a data object but characteristics exist. An additional sample object with the same name is created to contain the characteristics.
         let inputGetter =
             match headers |> Seq.tryPick (fun (generalI,header) -> tryGetInputGetter generalI header) with
@@ -418,6 +431,8 @@ module ProcessParsing =
             let paramvalues = parameterValueGetters |> List.map (fun f -> f matrix i) |> Option.fromValueWithDefault [] 
             let parameters = paramvalues |> Option.map (List.map (fun pv -> pv.Category.Value))
 
+            let comments = commentGetters |> List.map (fun f -> f matrix i) |> Option.fromValueWithDefault []
+
             let protocol : Protocol option = 
                 Protocol.make 
                     None
@@ -462,7 +477,7 @@ module ProcessParsing =
                 None          
                 (Some inputs)
                 (Some outputs)
-                None
+                comments
 
     /// Groups processes by their name, or by the name of the protocol they execute
     ///
@@ -492,20 +507,20 @@ module ProcessParsing =
         processes
         |> List.groupBy (fun x -> 
             if x.Name.IsSome && (x.Name.Value |> Process.decomposeName |> snd).IsSome then
-                (x.Name.Value |> Process.decomposeName |> fst), HashCodes.boxHashOption x.ExecutesProtocol, x.ParameterValues |> Option.map HashCodes.boxHashSeq
+                (x.Name.Value |> Process.decomposeName |> fst), HashCodes.boxHashOption x.ExecutesProtocol, x.ParameterValues |> Option.map HashCodes.boxHashSeq, x.Comments |> Option.map HashCodes.boxHashSeq
             elif x.ExecutesProtocol.IsSome && x.ExecutesProtocol.Value.Name.IsSome then
-                x.ExecutesProtocol.Value.Name.Value, HashCodes.boxHashOption x.ExecutesProtocol, x.ParameterValues |> Option.map HashCodes.boxHashSeq
+                x.ExecutesProtocol.Value.Name.Value, HashCodes.boxHashOption x.ExecutesProtocol, x.ParameterValues |> Option.map HashCodes.boxHashSeq, x.Comments |> Option.map HashCodes.boxHashSeq
             else
-                Identifier.createMissingIdentifier(), HashCodes.boxHashOption x.ExecutesProtocol, x.ParameterValues |> Option.map HashCodes.boxHashSeq
+                Identifier.createMissingIdentifier(), HashCodes.boxHashOption x.ExecutesProtocol, x.ParameterValues |> Option.map HashCodes.boxHashSeq, x.Comments |> Option.map HashCodes.boxHashSeq
         )
         |> fun l ->
             l
-            |> List.mapi (fun i ((n,_,_),processes) -> 
+            |> List.mapi (fun i ((n,_,_,_),processes) -> 
                 let pVs = processes.[0].ParameterValues
                 let inputs = processes |> List.collect (fun p -> p.Inputs |> Option.defaultValue []) |> Option.fromValueWithDefault []
                 let outputs = processes |> List.collect (fun p -> p.Outputs |> Option.defaultValue []) |> Option.fromValueWithDefault []
                 let n = if l.Length > 1 then Process.composeName n i else n
-                Process.create(Name = n,?ExecutesProtocol = processes.[0].ExecutesProtocol,?ParameterValues = pVs,?Inputs = inputs,?Outputs = outputs)
+                Process.create(Name = n,?ExecutesProtocol = processes.[0].ExecutesProtocol,?ParameterValues = pVs,?Inputs = inputs,?Outputs = outputs,?Comments = processes.[0].Comments)
             )
 
 
@@ -530,6 +545,13 @@ module ProcessParsing =
                     if prot.Version.IsSome then CompositeHeader.ProtocolVersion, CompositeCell.FreeText prot.Version.Value
                 ]
             | None -> []
+        let comments = 
+            p.Comments 
+            |> Option.defaultValue [] 
+            |> List.map (fun c -> 
+                CompositeHeader.Comment (Option.defaultValue "" c.Name),
+                CompositeCell.FreeText (Option.defaultValue "" c.Value)
+            )
         // zip the inputs and outpus so they are aligned as rows
         p.Outputs |> Option.defaultValue []
         |> List.zip (p.Inputs |> Option.defaultValue [])
@@ -565,6 +587,7 @@ module ProcessParsing =
                 yield JsonTypes.decomposeProcessInput inputForType
                 yield! protVals
                 yield! vals
+                yield! comments
                 yield JsonTypes.decomposeProcessOutput outputForType
             ]
         )

src/Core/Helper/Regex.fs

@@ -30,6 +30,9 @@ module Pattern =
         [<Literal>]
         let iotype = "iotype"
 
+        [<Literal>]
+        let commentKey = "commentKey"
+
     /// This pattern is only used to remove any leftover #id attributes from previous Swate version. 
     /// `"Parameter [biological replicate#2]"` This #id is deprecated but the pattern can still be used to remove any from files. 
     /// Was deprecated before 2023.
@@ -95,6 +98,9 @@ module Pattern =
     /// This pattern is used to match Output column and capture the IOType as `iotype` group.
     let OutputPattern = $@"Output\s\[(?<{MatchGroups.iotype}>.+)\]"
 
+    /// This pattern is used to match Comment column and capture the comment key as `commentKey` group.
+    let CommentPattern = $@"Comment\s\[(?<{MatchGroups.commentKey}>.+)\]"
+
     /// This pattern matches any column header starting with some text, followed by one whitespace and a term name inside squared brackets.
     ///
     /// Captures column type as named group: "termcolumntype" (e.g. Component, Characteristic .. ).
@@ -263,6 +269,12 @@ module ActivePatterns =
             r.Groups.["number"].Value |> int |> Some
         | _ -> None
 
+    let (|Comment|_|) input =
+        match input with
+        | Regex Pattern.CommentPattern r ->
+            Some r.Groups.[Pattern.MatchGroups.commentKey].Value
+        | _ -> None
+
 open Pattern
 open ActivePatterns
 open System

src/Core/Table/CompositeHeader.fs

@@ -151,6 +151,7 @@ type CompositeHeader =
     | Output of IOType
     // single - fallback
     | FreeText of string
+    | Comment of string
 
     with 
 
@@ -179,7 +180,7 @@ type CompositeHeader =
         // iotype as input
         | 11 | 12 -> 2
         // string as input
-        | 13 -> 3
+        | 13 | 14 -> 3
         | anyElse -> failwithf "Cannot assign input `Tag` (%i) to `CompositeHeader`" anyElse
 
     override this.ToString() =
@@ -197,6 +198,7 @@ type CompositeHeader =
         | Date                  -> "Date"
         | Input io              -> io.asInput
         | Output io             -> io.asOutput
+        | Comment key           -> $"Comment [{key}]"
         | FreeText str          -> str
 
     /// If the column is a term column, returns the term as `OntologyAnnotation`. Otherwise returns an `OntologyAnnotation` with only the name.
@@ -215,6 +217,7 @@ type CompositeHeader =
         | Date                  -> OntologyAnnotation.create (this.ToString())  // use owl ontology in the future
         | Input _               -> OntologyAnnotation.create (this.ToString())  // use owl ontology in the future
         | Output _              -> OntologyAnnotation.create (this.ToString())  // use owl ontology in the future
+        | Comment _            -> OntologyAnnotation.create (this.ToString())  // use owl ontology in the future    
         | FreeText _            -> OntologyAnnotation.create (this.ToString())  // use owl ontology in the future
         // owl ontology: https://github.com/nfdi4plants/ARC_ontology/blob/main/ARC_v2.0.owl
 
@@ -231,6 +234,8 @@ type CompositeHeader =
         | Regex.ActivePatterns.Regex Regex.Pattern.OutputPattern r ->
             let iotype = r.Groups.[Regex.Pattern.MatchGroups.iotype].Value
             Output <| IOType.ofString (iotype)
+        | Regex.ActivePatterns.Regex Regex.Pattern.CommentPattern r ->
+            Comment r.Groups.[Regex.Pattern.MatchGroups.commentKey].Value
         // Is term column
         | Regex.ActivePatterns.TermColumn r ->
             match r.TermColumnType with
@@ -332,6 +337,7 @@ type CompositeHeader =
         match this with 
         | FreeText _
         | Input _ | Output _ 
+        | Comment _ 
         | ProtocolREF | ProtocolDescription | ProtocolUri | ProtocolVersion | Performer | Date -> true 
         | anythingElse -> false
 
@@ -414,6 +420,11 @@ type CompositeHeader =
         | Date -> true
         | anythingElse -> false
 
+    member this.isComment =
+        match this with
+        | Comment _ -> true
+        | anythingElse -> false
+
     member this.isFreeText =
         match this with
         | FreeText _ -> true
@@ -475,6 +486,8 @@ type CompositeHeader =
             "Only one output column per table. E.g. experimental samples or files."
         | U2.Case1 (FreeText _) | U2.Case2 "FreeText" ->
             "Placeholder"
+        | U2.Case1 (Comment _) | U2.Case2 "Comment" ->
+            "Comment"
         | _ -> failwith $"Unable to parse combination to existing CompositeHeader: `{header}`"
 
 #if FABLE_COMPILER

src/Json/Table/CompositeHeader.fs

@@ -14,6 +14,7 @@ module CompositeHeader =
     let t, v = 
       match ch with
       | CompositeHeader.FreeText s -> s, []
+      | CompositeHeader.Comment c -> "Comment", [Encode.string c]
       | CompositeHeader.Parameter oa -> "Parameter", [oaToJsonString oa]
       | CompositeHeader.Factor oa -> "Factor", [oaToJsonString oa]
       | CompositeHeader.Characteristic oa -> "Characteristic", [oaToJsonString oa]
@@ -37,6 +38,7 @@ module CompositeHeader =
       let headerType = get.Required.Field HeaderType Decode.string
       let oa() = get.Required.Field HeaderValues (Decode.index 0 OntologyAnnotation.decoder)
       let io() = get.Required.Field HeaderValues (Decode.index 0 IOType.decoder)
+      let c() = get.Required.Field HeaderValues Decode.string
       match headerType with
       | "Characteristic" -> oa() |> CompositeHeader.Characteristic
       | "Parameter" -> oa() |> CompositeHeader.Parameter
@@ -51,6 +53,7 @@ module CompositeHeader =
       | "ProtocolVersion" -> CompositeHeader.ProtocolVersion
       | "Performer" -> CompositeHeader.Performer
       | "Date" -> CompositeHeader.Date
+      | "Comment" -> c() |> CompositeHeader.Comment
       | anyelse -> CompositeHeader.FreeText anyelse
     ) 
 

src/Spreadsheet/AnnotationTable/CompositeHeader.fs

@@ -98,6 +98,12 @@ module ActivePattern =
                 |> Some
         | _ -> None
 
+    let (|Comment|_|) (cells : FsCell list) =
+        let cellValues = cells |> List.map (fun c -> c.ValueAsString())
+        match cellValues with
+        | [Comment key] -> Some (CompositeHeader.Comment key, CompositeCell.freeTextFromFsCells)
+        | _ -> None
+
     let (|ProtocolType|_|) (cells : FsCell list) =
         let parser s = if s = "Protocol Type" then Some s else None
         let header _ = CompositeHeader.ProtocolType
@@ -136,6 +142,7 @@ let fromFsCells (cells : list<FsCell>) : CompositeHeader*(FsCell list -> Composi
     | Output o -> o
     | ProtocolType pt -> pt
     | ProtocolHeader ph -> ph 
+    | Comment c -> c
     | FreeText ft -> ft
     | _ -> failwithf "Could not parse header group %O" cells
 

tests/Core/ArcJsonConversion.Tests.fs

@@ -410,6 +410,24 @@ let private tests_ArcTableProcess =
             let t' = ArcTable.fromProcesses tableName1 processes
             Expect.arcTableEqual t' t "Table should be equal"
         )
+        testCase "SingleRowIOAndComment GetAndFromProcesses" (fun () ->
+            let t = ArcTable.init(tableName1)
+            let commentKey = "MyCommentKey"
+            let commentValue = "MyCommentValue"
+            t.AddColumn(CompositeHeader.Input(IOType.Source),[|CompositeCell.createFreeText "Source"|])
+            t.AddColumn(CompositeHeader.Comment(commentKey), [|CompositeCell.createFreeText commentValue|])
+            t.AddColumn(CompositeHeader.Output(IOType.Sample),[|CompositeCell.createFreeText "Sample"|])
+            let processes = t.GetProcesses()
+            Expect.hasLength processes 1 ""
+            let comments = Expect.wantSome processes.[0].Comments ""
+            Expect.hasLength comments 1 ""
+            let comment = comments.[0]
+            Expect.equal comment (Comment(commentKey,commentValue)) ""
+            let table = ArcTable.fromProcesses tableName1 processes
+            let expectedTable = t
+            Expect.arcTableEqual table expectedTable "Table should be equal"
+        )
+
     ]
 
 let private tests_ArcTablesProcessSeq = 

tests/Core/CompositeHeader.Tests.fs

@@ -51,7 +51,7 @@ let private tests_compositeHeader =
     testList "CompositeHeader" [
         testCase "Cases" <| fun _ ->
             let count = CompositeHeader.Cases.Length
-            Expect.equal count 14 "count"
+            Expect.equal count 15 "count"
         testCase "getExplanation" <| fun _ ->
             let cases = CompositeHeader.Cases |> Array.map snd
             for case in cases do
@@ -318,6 +318,7 @@ let tests_ToTerm = testList "ToTerm" [
             CompositeHeader.Input IOType.Source
             CompositeHeader.Output IOType.Sample
             CompositeHeader.FreeText "Hello World"
+            CompositeHeader.Comment "MyComment"
         ]
         |> List.distinct
     testCase "Ensure all headers listed" <| fun _ ->