rta: add `live_types_to_csv` to provide human-readable info on types

Signed-off-by: Jean Privat <jean@pryen.org>

diff --git a/src/rapid_type_analysis.nit b/src/rapid_type_analysis.nit
index eecee11..0c50081 100644 (file)
--- a/src/rapid_type_analysis.nit
+++ b/src/rapid_type_analysis.nit
@@ -28,6 +28,8 @@ import modelbuilder
 import typing
 import auto_super_init
 
+import csv # for live_types_to_csv
+
 redef class ModelBuilder
        fun do_rapid_type_analysis(mainmodule: MModule): RapidTypeAnalysis
        do
@@ -75,6 +77,33 @@ class RapidTypeAnalysis
        # Live call-to-super.
        var live_super_sends = new HashSet[MMethodDef]
 
+       # Return a ready-to-save CSV document objet that agregates informations about live types.
+       # Each discovered type is listed in a line, with its status: resolution, liveness, cast-liveness.
+       # Note: types are listed in an alphanumeric order to improve human reading.
+       fun live_types_to_csv: CSVDocument
+       do
+               # Gather all kind of type
+               var typeset = new HashSet[MType]
+               typeset.add_all(live_types)
+               typeset.add_all(live_open_types)
+               typeset.add_all(live_cast_types)
+               typeset.add_all(live_open_cast_types)
+               var types = typeset.to_a
+               (new CachedAlphaComparator).sort(types)
+               var res = new CSVDocument
+               res.header = ["Type", "Resolution", "Liveness", "Cast-liveness"]
+               for t in types do
+                       var reso
+                       if t.need_anchor then reso = "OPEN " else reso = "CLOSED"
+                       var live
+                       if t isa MClassType and (live_types.has(t) or live_open_types.has(t)) then live = "LIVE" else live = "DEAD"
+                       var cast
+                       if live_cast_types.has(t) or live_open_cast_types.has(t) then cast = "CAST LIVE" else cast = "CAST DEAD"
+                       res.add_line(t, reso, live, cast)
+               end
+               return res
+       end
+
        # Methods that are are still candidate to the try_send
        private var totry_methods = new HashSet[MMethod]