templates support

Inspectron.Epson.Templates/Language/Token.cs

@@ -0,0 +1,44 @@
+namespace Inspectron.Epson.Templates.Language;
+
+public enum TokenType
+{
+    // Text content
+    Text,
+
+    // Styled text: #style1,style2# text #
+    StyleStart,      // #style1,style2#
+    StyleEnd,        // trailing #
+
+    // Bindings: {path} or {path:format}
+    Binding,
+
+    // Separators
+    DashSeparator,   // ---
+    EqualsSeparator, // ===
+    StarSeparator,   // ***
+    TildeSeparator,  // ~~~
+
+    // Directives
+    If,              // @if condition
+    ElseIf,          // @elseif condition
+    Else,            // @else
+    End,             // @end
+    Foreach,         // @foreach item in collection
+    Row,             // @row
+    EndRow,          // @endrow
+    Column,          // |width| or |width,align|
+
+    // Structural
+    NewLine,
+    EndOfFile
+}
+
+public record struct SourcePosition(int Line, int Column)
+{
+    public override string ToString() => $"({Line}:{Column})";
+}
+
+public record Token(TokenType Type, string Value, SourcePosition Position)
+{
+    public static Token Eof(int line) => new(TokenType.EndOfFile, string.Empty, new SourcePosition(line, 0));
+}