templates support

Inspectron.Epson.Templates/Language/Nodes/ColumnNode.cs

@@ -0,0 +1,27 @@
+namespace Inspectron.Epson.Templates.Language.Nodes;
+
+public enum ColumnAlignment
+{
+    Left,
+    Right,
+    Center
+}
+
+public record ColumnNode(
+    int Width,
+    ColumnAlignment Alignment,
+    List<ITemplateNode> ContentNodes,
+    SourcePosition Position) : ITemplateNode
+{
+    public IReadOnlyList<ITemplateNode> Children => ContentNodes;
+
+    public static (int Width, ColumnAlignment Alignment) ParseColumnSpec(string value)
+    {
+        var parts = value.Split(',', 2);
+        var width = int.Parse(parts[0]);
+        var align = parts.Length > 1
+            ? Enum.TryParse<ColumnAlignment>(parts[1], true, out var a) ? a : ColumnAlignment.Left
+            : ColumnAlignment.Left;
+        return (width, align);
+    }
+}