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-- Programmed by Jedidiah Barber
-- Licensed under the Sunset License v1.0
-- See license.txt for further details
with
Ada.Characters.Latin_1,
Ada.Strings.Fixed,
Kompsos.Collector;
package body Kompsos.Pretty_Print is
package Latin renames Ada.Characters.Latin_1;
package Str renames Ada.Strings;
function Image
(Item : in Integer)
return String is
begin
return Str.Fixed.Trim (Integer'Image (Item), Str.Left);
end Image;
function Image
(Item : in Long_Natural)
return String is
begin
return Str.Fixed.Trim (Long_Natural'Image (Item), Str.Left);
end Image;
function Image
(Item : in Variable)
return String is
begin
return "Vargen#" & Image (Long_Natural (Item.Ident)) &
(if SU.Length (Item.Name) /= 0
then "/" & SU.To_String (Item.Name)
else "");
end Image;
function Image
(Item : in Term)
return String
is
function Bare
(Item : in Term)
return String is
begin
case Item.Kind is
when Null_Term =>
return "()";
when Atom_Term =>
return Element_Image (Item.Atom);
when Var_Term =>
return Image (Item.Var);
when Pair_Term =>
if Item.Right.Kind = Null_Term then
return Image (Item.Left);
elsif Item.Right.Kind /= Pair_Term then
return Image (Item.Left) & " . " & Bare (Item.Right);
else
return Image (Item.Left) & " " & Bare (Item.Right);
end if;
end case;
end Bare;
begin
if Item.Kind = Pair_Term then
return "(" & Bare (Item) & ")";
else
return Bare (Item);
end if;
end Image;
function Image
(Item : in State)
return String
is
Result : SU.Unbounded_String;
begin
SU.Append (Result, Latin.HT & "Generation:");
if Item.Ident.Is_Empty then
SU.Append (Result, " N/A" & Latin.LF);
else
SU.Append (Result, Latin.LF);
for Iter in Item.Ident.Iterate loop
SU.Append (Result, Latin.HT & Latin.HT & "Vargen#" &
Image (Long_Natural (ID_Number_Maps.Key (Iter))) & " => " &
Image (Long_Natural (ID_Number_Maps.Element (Iter))) & Latin.LF);
end loop;
end if;
SU.Append (Result, Latin.HT & "Variables:");
if Item.LVars.Is_Empty then
SU.Append (Result, " N/A" & Latin.LF);
else
SU.Append (Result, Latin.LF);
for Index in Item.LVars.First_Index .. Item.LVars.Last_Index loop
SU.Append (Result, Latin.HT & Latin.HT &
"Var#" & Image (Long_Natural (Index)) &
(if SU.Length (Item.LVars (Index)) /= 0
then "/" & SU.To_String (Item.LVars (Index))
else "") & Latin.LF);
end loop;
end if;
SU.Append (Result, Latin.HT & "Substitution:");
if Item.Subst.Is_Empty then
SU.Append (Result, " N/A" & Latin.LF);
else
SU.Append (Result, Latin.LF);
for Iter in Item.Subst.Iterate loop
SU.Append (Result, Latin.HT & Latin.HT &
Image (Long_Natural (Binding_Maps.Key (Iter))) & " => " &
Image (Binding_Maps.Element (Iter)) & Latin.LF);
end loop;
end if;
return -Result;
end Image;
function Image
(Item : in State_Array)
return String
is
Result : SU.Unbounded_String;
begin
if Item'Length = 0 then
return "States: N/A" & Latin.LF;
end if;
for Index in Item'Range loop
SU.Append (Result, "State#" & Image (Index) & ":" & Latin.LF);
SU.Append (Result, Image (Item (Index)));
end loop;
return SU.Slice (Result, 1, SU.Length (Result) - 1);
end Image;
function Image
(Item : in Goal)
return String
is
Result : SU.Unbounded_String;
Counter : Positive := 1;
package Collect is new Collector (Item, Empty_State);
begin
if not Collect.Has_Next then
return "States: N/A" & Latin.LF;
end if;
loop
SU.Append (Result, "State#" & Image (Counter) & ":" & Latin.LF);
SU.Append (Result, Image (Collect.Next));
exit when not Collect.Has_Next;
Counter := Counter + 1;
end loop;
return SU.Slice (Result, 1, SU.Length (Result) - 1);
end Image;
procedure Do_Structure_DOT
(This : in Goal;
Nodes : in out DOT_Node_Maps.Map;
Next : in out Long_Natural;
Result : in out SU.Unbounded_String) is
begin
if This.Actual = null or else Nodes.Contains (This.Actual) then
return;
end if;
Nodes.Insert (This.Actual, Next);
Next := Next + 1;
case This.Actual.Kind is
when Static_Node =>
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " [label=""static""];" & Latin.LF);
when Fresh_Node =>
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " [label=""fresh""];" & Latin.LF);
Do_Structure_DOT (This.Actual.Frs_Goal, Nodes, Next, Result);
if Nodes.Contains (This.Actual.Frs_Goal.Actual) then
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " -> " &
"n" & Image (Nodes.Element (This.Actual.Frs_Goal.Actual)) & ";" & Latin.LF);
end if;
when Unify_Node =>
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " [label=""unify""];" & Latin.LF);
Do_Structure_DOT (This.Actual.Uni_Goal, Nodes, Next, Result);
if Nodes.Contains (This.Actual.Uni_Goal.Actual) then
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " -> " &
"n" & Image (Nodes.Element (This.Actual.Uni_Goal.Actual)) & ";" & Latin.LF);
end if;
when Disjunct_Node =>
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " [label=""disjunct""];" & Latin.LF);
Do_Structure_DOT (This.Actual.Dis_Goal1, Nodes, Next, Result);
Do_Structure_DOT (This.Actual.Dis_Goal2, Nodes, Next, Result);
if Nodes.Contains (This.Actual.Dis_Goal1.Actual) then
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " -> " &
"n" & Image (Nodes.Element (This.Actual.Dis_Goal1.Actual)) &
" [label=""1""];" & Latin.LF);
end if;
if Nodes.Contains (This.Actual.Dis_Goal2.Actual) then
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " -> " &
"n" & Image (Nodes.Element (This.Actual.Dis_Goal2.Actual)) &
" [label=""2""];" & Latin.LF);
end if;
when Conjunct_Node =>
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " [label=""conjunct""];" & Latin.LF);
Do_Structure_DOT (This.Actual.Con_Goal, Nodes, Next, Result);
if Nodes.Contains (This.Actual.Con_Goal.Actual) then
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " -> " &
"n" & Image (Nodes.Element (This.Actual.Con_Goal.Actual)) & ";" & Latin.LF);
end if;
when Recurse_Node =>
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " [label=""recurse""];" & Latin.LF);
Do_Structure_DOT (This.Actual.Rec_Goal, Nodes, Next, Result);
if Nodes.Contains (This.Actual.Rec_Goal.Actual) then
SU.Append (Result, Latin.HT &
"n" & Image (Nodes.Element (This.Actual)) & " -> " &
"n" & Image (Nodes.Element (This.Actual.Rec_Goal.Actual)) & ";" & Latin.LF);
end if;
end case;
end Do_Structure_DOT;
function Structure_DOT
(This : in Goal;
Name : in String := "")
return String
is
Result : SU.Unbounded_String;
Nodes : DOT_Node_Maps.Map;
Next_ID : Long_Natural := 0;
begin
SU.Append (Result, "digraph ");
if Name /= "" then
SU.Append (Result, Name & " ");
end if;
SU.Append (Result, "{" & Latin.LF);
Do_Structure_DOT (This, Nodes, Next_ID, Result);
SU.Append (Result, "}");
return SU.To_String (Result);
end Structure_DOT;
end Kompsos.Pretty_Print;
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