minor formatting changes to exception logging, and begin building from new search list functionality as well

fcore/build-search-list.sml

@@ -81,10 +81,11 @@ struct
   fun fromStart (app, cursorIdx, buffer, searchString) =
     if String.size searchString > 0 then
       let
+        val buffer = LineGap.goToEnd buffer
+        val searchList = SearchLineGap.search (buffer, searchString)
         val buffer = LineGap.goToStart buffer
       in
-        helpFromStart
+        AppWith.searchList (app, searchList, buffer, searchString)
-          (app, cursorIdx, 0, buffer, searchString, SearchList.empty)
       end
     else
       app
@@ -130,15 +131,11 @@ struct
     end
 
   fun fromRange (startIdx, length, buffer, searchString, searchList) =
-    if String.size searchString = 0 then
+    let
+      val buffer = LineGap.goToEnd buffer
+      val searchList = SearchLineGap.search (buffer, searchString)
+      val buffer = LineGap.goToStart buffer
+    in
       (buffer, searchList)
-    else
+    end
-      let
-        val finishIdx = startIdx + length + String.size searchString
-        val bufferIdx = startIdx - String.size searchString
-        val bufferIdx = Int.max (bufferIdx, 0)
-      in
-        helpFromRange
-          (startIdx, bufferIdx, finishIdx, buffer, searchString, searchList)
-      end
 end

fcore/search/search-line-gap.sml

@@ -1,8 +1,21 @@
 structure SearchLineGap =
 struct
+  fun cons (num, acc) =
+    let
+      val num = Vector.fromList [num]
+    in
+      case acc of
+        hd :: tl =>
+          if Vector.length hd < 32 then
+            (Vector.concat [num, hd]) :: tl
+          else
+            num :: acc
+      | [] => num :: acc
+    end
+
   fun searchStep (pos, hd, absIdx, tl, acc, searchPos, searchString) =
     if searchPos < 0 then
-      (absIdx + 1) :: acc
+      cons (absIdx + 1, acc)
     else if pos < 0 then
       case tl of
         hd :: tl =>
@@ -33,17 +46,22 @@ struct
         loopSearch (pos - 1, hd, absIdx - 1, tl, acc, searchString)
       end
 
-  fun search (buffer, searchString) =
+  (* Prerequisite: move buffer/LineGap to end *)
-    if String.size searchString = 0 then
+  fun search (buffer: LineGap.t, searchString) =
-      []
+    let
-    else
+      val acc =
-      let
+        if String.size searchString = 0 then
-        val buffer = LineGap.goToEnd buffer
+          []
-        val {leftStrings, idx = absIdx, ...} = buffer
+        else
-      in
+          let
-        case leftStrings of
+            val {leftStrings, idx = absIdx, ...} = buffer
-          hd :: tl =>
+          in
-            loopSearch (String.size hd - 1, hd, absIdx - 1, tl, [], searchString)
+            case leftStrings of
-        | [] => []
+              hd :: tl =>
-      end
+                loopSearch (String.size hd - 1, hd, absIdx - 1, tl, [], searchString)
+            | [] => []
+          end
+    in
+      {left = [], right = acc}
+    end
 end

shell/exception-logger.sml

@@ -19,18 +19,18 @@ struct
     let
       (* print stack trace for debugging purposes, 
        * and then raise another exception to exit the program *)
+      val errName = General.exnName e ^ "\n"
       val stackTrace = MLton.Exn.history e
-      val stackTrace = String.concatWith "\n" stackTrace
+      val stackTrace = (String.concatWith "\n" stackTrace) ^ "\n"
-      val () = print "ERROR:\n"
-      val () = print (stackTrace ^ "\n\n")
-
       val history = !textCommands ^ "\n\n"
-      val () = print ("HISTORY: " ^ history)
 
-      val textOutput = stackTrace ^ "\n" ^ history
+      val log = String.concat
+        ["ERROR: ", errName, stackTrace, "HISTORY: ", history]
+
+      val () = print ("\n" ^ log)
 
       val io = TextIO.openAppend "exceptions.log"
-      val () = TextIO.output (io, textOutput)
+      val () = TextIO.output (io, log)
       val () = TextIO.closeOut io
     in
       raise e