Updated table to accept dynamic length variable names

Author: tomc128

v2/BooleanExpressionParser/.vscode/launch.json

@@ -11,8 +11,8 @@
                 // "A.B",
                 // "A+B",
                 // "!(A+B+C)",
-                "(((A.B&C) OR A) AND (NOT B + !C)) AND NOT D",
-                // "!S.D_0 + D_1 AND S"
+                // "(((A.B&C) OR A) AND (NOT B + !C)) AND NOT D",
+                "!S.D_0 + D_1 AND S",
             ],
             "cwd": "${workspaceFolder}",
             "console": "integratedTerminal", // enables input (instead of internalConsole)

v2/BooleanExpressionParser/Formatter.cs

@@ -33,16 +33,36 @@ public static string FormatTruthTable(Ast ast, List<bool[]> table)
     {
         var sb = new StringBuilder();
 
-        sb.AppendLine($"┏{Repeat('━', ast.Variables.Count * 3 + 2)}┳{Repeat('━', 8)}┓");
-        sb.AppendLine($"┃  {String.Join("  ", ast.Variables)}  ┃ Result ┃");
-        sb.AppendLine($"┣{Repeat('━', ast.Variables.Count * 3 + 2)}╋{Repeat('━', 8)}┫");
+        var variableLine = ast.Variables.Select(v => Repeat('━', v.Length + 2)).ToList();
 
-        foreach (var row in table)
+        sb.Append("┏━");
+        variableLine.ForEach(s => sb.Append(s));
+        sb.AppendLine("━┳━━━━━━━━┓");
+
+        sb.Append("┃ ");
+        ast.Variables.ForEach(v => sb.Append($" {v} "));
+        sb.AppendLine(" ┃ Result ┃");
+
+        sb.Append("┣━");
+        variableLine.ForEach(s => sb.Append(s));
+        sb.AppendLine("━╋━━━━━━━━┫");
+
+        foreach (bool[] row in table)
         {
-            sb.AppendLine($"┃  {String.Join("  ", row[0..^1].Select(b => b ? "1" : "0"))}  ┃   {(row[^1] ? "1" : "0")}    ┃");
+            sb.Append("┃ ");
+            for (int i = 0; i < row.Length - 1; i++)
+            {
+                string pad1 = Repeat(' ', (int)Math.Ceiling(ast.Variables[i].Length / 2.0f));
+                string pad2 = Repeat(' ', (int)Math.Floor(ast.Variables[i].Length / 2.0f));
+                sb.Append($"{pad1}{(row[i] ? '1' : '0')}{pad2} ");
+            }
+
+            sb.AppendLine($" ┃   {(row[^1] ? '1' : '0')}    ┃");
         }
 
-        sb.AppendLine($"┗{Repeat('━', ast.Variables.Count * 3 + 2)}┻{Repeat('━', 8)}┛");
+        sb.Append("┗━");
+        variableLine.ForEach(s => sb.Append(s));
+        sb.AppendLine("━┻━━━━━━━━┛");
 
         return sb.ToString();
     }

v2/BooleanExpressionParser/Program.cs

@@ -18,9 +18,8 @@ static void Main(params string[] args)
             var parser = new Parser();
             var prefixTokens = parser.ParseTokens(infixTokens);
 
-            Console.WriteLine($"Expression: {expression}");
-            Console.WriteLine($"Prefix: {Formatter.FormatPrefixTokens(prefixTokens)}");
             Console.WriteLine($"Infix: {Formatter.FormatInfixTokens(infixTokens)}");
+            Console.WriteLine($"Prefix: {Formatter.FormatPrefixTokens(prefixTokens)}");
 
             var ast = parser.GrowAst(prefixTokens);