Improve parse error handling

TODO.FACTOR.txt

@@ -3,7 +3,7 @@
 - variable width word wrap
 - graphical crossref tool
 - http://paste.lisp.org/display/30426
-- listener: if partial parse, RETURN should insert newline
+- parse errors should be shown in a popup
 - compiled call traces:
   - should be independent of whenever the runtime was built with
     -fomit-frame-pointer or not

library/syntax/parse-stream.factor

@@ -35,10 +35,7 @@ C: source-file ( path -- source-file )
     "scratchpad" set-in { "syntax" "scratchpad" } set-use ;
 
 : with-parser ( quot -- )
-    0 line-number set [
-        dup [ parse-error? ] is? [ <parse-error> ] unless
-        rethrow
-    ] recover ;
+    0 line-number set [ <parse-error> rethrow ] recover ;
 
 : parse-lines ( lines -- quot )
     [ f [ (parse) ] reduce >quotation ] with-parser ;

library/tools/debugger.factor

@@ -83,10 +83,10 @@ M: string error. print ;
     first3 continue-with ;
 
 : :edit ( -- )
-    error get
-    dup parse-error-file ?resource-path
-    swap parse-error-line
-    edit-location ;
+    error get delegates [ parse-error-file ] find nip [
+        dup parse-error-file ?resource-path
+        swap parse-error-line edit-location
+    ] when* ;
 
 : (:help-multi)
     "This error has multiple delegates:" print

library/ui/text/interactor.factor

@@ -73,9 +73,10 @@ M: interactor stream-read
     interactor-in in set ;
 
 : handle-parse-error ( interactor error -- )
-    dup [ parse-error? ] is? [
+    dup parse-error? [
         2dup dup parse-error-line 1- swap parse-error-col 2array
         over editor-caret set-model mark>caret
+        delegate
     ] when
     swap interactor-output [ print-error ] with-stream* ;