Debug_String functions added to Packrat.Errors and Packrat.Tokens

3 files changed, 46 insertions, 2 deletions

diff --git a/src/packrat-errors.adb b/src/packrat-errors.adb
index d59e4c7..62a96a7 100644
--- a/src/packrat-errors.adb
+++ b/src/packrat-errors.adb
@@ -3,7 +3,8 @@
 with
 
     Ada.Strings.Fixed,
-    Ada.Characters.Handling;
+    Ada.Characters.Handling,
+    Ada.Characters.Latin_1;
 
 
 separate (Packrat)
@@ -13,6 +14,7 @@ package body Errors is
     package SU renames Ada.Strings.Unbounded;
     package SF renames Ada.Strings.Fixed;
     package CH renames Ada.Characters.Handling;
+    package Latin renames Ada.Characters.Latin_1;
 
 
 
@@ -199,6 +201,21 @@ package body Errors is
     end Valid_Message;
 
 
+    function Debug_String
+           (This : in Error_Message)
+        return String
+    is
+        Result : SU.Unbounded_String := +"";
+        Info : Error_Info_Array := Decode (This);
+    begin
+        for E of Info loop
+            SU.Append (Result, "Expected " & (-E.Symbol) &
+                " at input position" & Integer'Image (E.Position) & Latin.LF);
+        end loop;
+        return -Result;
+    end Debug_String;
+
+
 
 
 
diff --git a/src/packrat-tokens.adb b/src/packrat-tokens.adb
index 4cb10bf..70a866a 100644
--- a/src/packrat-tokens.adb
+++ b/src/packrat-tokens.adb
@@ -2,13 +2,18 @@
 
 with
 
-    Ada.Unchecked_Deallocation;
+    Ada.Unchecked_Deallocation,
+    Ada.Characters.Latin_1;
 
 
 separate (Packrat)
 package body Tokens is
 
 
+    package SU renames Ada.Strings.Unbounded;
+    package Latin renames Ada.Characters.Latin_1;
+
+
     procedure Free_Array is new Ada.Unchecked_Deallocation
         (Object => Element_Array, Name => Element_Array_Access);
 
@@ -76,6 +81,20 @@ package body Tokens is
     end Initialized;
 
 
+    function Debug_String
+           (This : in Token)
+        return String
+    is
+        Result : SU.Unbounded_String := +"";
+    begin
+        SU.Append (Result, "Token " & Label_Enum'Image (This.Identifier) &
+            " at input position" & Integer'Image (This.Start_At) & " to" &
+            Integer'Image (This.Finish_At) & " with value length" &
+            Integer'Image (This.Token_Value'Length) & Latin.LF);
+        return -Result;
+    end Debug_String;
+
+
 
 
 
diff --git a/src/packrat.ads b/src/packrat.ads
index c60b798..a17e499 100644
--- a/src/packrat.ads
+++ b/src/packrat.ads
@@ -53,6 +53,10 @@ package Packrat is
                (Check : in String)
             return Boolean;
 
+        function Debug_String
+               (This : in Error_Message)
+            return String;
+
 
         function Join
                (Left, Right : in Error_Message)
@@ -118,6 +122,10 @@ package Packrat is
                (This : in Token)
             return Boolean;
 
+        function Debug_String
+               (This : in Token)
+            return String;
+
 
         function Label
                (This : in Token)