add .file alias for .file.path and fix filepath

lib/app/pipeline/pipeline.ml

@@ -82,8 +82,11 @@ let process_single_source
     | Some rewrite_template ->
       match matches with
       | [] ->
-        (* If there are no matches, return the original source (for editor support). *)
-        Replacement ([], input_text, 0)
+        (* If there are no matches, return the original source (for editor support) if substitute_in_place is active. *)
+        if substitute_in_place then
+          Replacement ([], input_text, 0)
+        else
+          Nothing
       | matches ->
         (* FIXME this should be configured where it's done in command_configuration.ml *)
         let external_handler = External_semantic.lsif_hover in

lib/kernel/matchers/evaluate.ml

@@ -111,11 +111,15 @@ let apply
       let source = rewrite_substitute (Template.to_string t) env in
       let configuration = Configuration.create ~match_kind:Fuzzy () in
       let configuration = { configuration with substitute_in_place } in
-      let matches = match_all ~configuration ~template ~source () in
+      let matches = match_all ?filepath ~configuration ~template ~source () in
       let source = if substitute_in_place then Some source else None in
-      let result = Rewrite.all ~metasyntax ?source ~rewrite_template matches in
+      let result = Rewrite.all ~metasyntax ?filepath ?source ~rewrite_template matches in
       if Option.is_empty result then
-        true, Some env (* rewrites are always sat. *)
+        (if substitute_in_place then
+           (* rewrites are always sat for in-place. always unsat for newline-sep. *)
+           true, Some env
+         else
+           false, Some env)
       else
         let Replacement.{ rewritten_source; _ } = Option.value_exn result in
         (* substitute for variables that are in the outside scope *)

lib/kernel/matchers/omega.ml

@@ -154,7 +154,7 @@ module Make (Language : Types.Language.S) (Meta : Metasyntax.S) (Ext : External.
       | None ->
         if rewrite then
           begin
-            let result, _ = Template.substitute (Template.parse !rewrite_template) !current_environment_ref in
+            let result, _ = Template.substitute ?filepath:!filepath_ref (Template.parse !rewrite_template) !current_environment_ref in
             (* Don't just append, but replace the match context including constant
                strings. I.e., somewhere where we are appending the parth that matched, it
                shouldn't, and instead just ignore. *)
@@ -193,7 +193,7 @@ module Make (Language : Types.Language.S) (Meta : Metasyntax.S) (Ext : External.
           if debug then Format.printf "Some new env %s@." @@ Match.Environment.to_string env;
           current_environment_ref := env;
           begin
-            let result, _ = Template.substitute (Template.parse !rewrite_template) !current_environment_ref in
+            let result, _ = Template.substitute ?filepath:!filepath_ref (Template.parse !rewrite_template) !current_environment_ref in
             (* Don't just append, but replace the match context including constant
                strings. I.e., somewhere where we are appending the parth that matched, it
                shouldn't, and instead just ignore. *)

lib/kernel/matchers/preprocess.ml

@@ -5,6 +5,27 @@ let debug =
   | exception Not_found -> false
   | _ -> true
 
+let append_rule (module Parser : Types.Rule.S) rule parent_rule =
+  let open Option in
+  let rule =
+    rule
+    >>| Parser.create
+    >>| function
+    | Ok rule -> rule
+    | Error e -> failwith @@ "Could not parse rule for alias entry:"^(Error.to_string_hum e)
+  in
+  match parent_rule, rule with
+  | Some parent_rule, Some rule -> Some (parent_rule @ rule)
+  | None, Some rule -> Some rule
+  | Some parent_rule, None -> Some parent_rule
+  | None, None -> None
+
+let map_template (module Parser : Types.Rule.S) template pattern match_template rule parent_rule =
+  let template' = String.substr_replace_all template ~pattern ~with_:match_template in
+  if debug then Format.printf "Substituted: %s@." template';
+  let rule' = append_rule (module Parser) rule parent_rule in
+  template', rule'
+
 let map_aliases
     (module Metasyntax : Metasyntax.S)
     (module External : External.S)
@@ -14,24 +35,9 @@ let map_aliases
   List.fold Metasyntax.aliases
     ~init:(template, parent_rule)
     ~f:(fun (template, parent_rule) Types.Metasyntax.{ pattern; match_template; rule } ->
-        let open Option in
-        match String.substr_index template ~pattern with
-        | None -> template, parent_rule
-        | Some _ ->
-          let template' = String.substr_replace_all template ~pattern ~with_:match_template in
-          if debug then Format.printf "Substituted: %s@." template';
-          let rule' =
-            let rule =
-              rule
-              >>| Parser.create
-              >>| function
-              | Ok rule -> rule
-              | Error e -> failwith @@ "Could not parse rule for alias entry:"^(Error.to_string_hum e)
-            in
-            match parent_rule, rule with
-            | Some parent_rule, Some rule -> Some (parent_rule @ rule)
-            | None, Some rule -> Some rule
-            | Some parent_rule, None -> Some parent_rule
-            | None, None -> None
-          in
-          template', rule')
+        let template', parent_rule' =
+          match String.substr_index template ~pattern with
+          | None -> template, parent_rule
+          | Some _ -> map_template (module Parser) template pattern match_template rule parent_rule
+        in
+        template', parent_rule')

lib/kernel/matchers/template.ml

@@ -88,6 +88,7 @@ module Make (Metasyntax : Types.Metasyntax.S) (External : Types.External.S) : Ty
     | "column"
     | "column.start" -> ColumnStart
     | "column.end" -> ColumnEnd
+    | "file"
     | "file.path" -> FilePath
     | "file.name" -> FileName
     | "file.directory" -> FileDirectory
@@ -119,6 +120,7 @@ module Make (Metasyntax : Types.Metasyntax.S) (External : Types.External.S) : Ty
       ; string "file.path"
       ; string "file.name"
       ; string "file.directory"
+      ; string "file"
       ; string "lowercase"
       ; string "UPPERCASE"
       ; string "Capitalize"