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src/Policy/StellaOps.PolicyDsl/DslToken.cs

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+namespace StellaOps.PolicyDsl;
+
+/// <summary>
+/// Represents the kind of token in the policy DSL.
+/// </summary>
+public enum TokenKind
+{
+    EndOfFile = 0,
+    Identifier,
+    StringLiteral,
+    NumberLiteral,
+    BooleanLiteral,
+    LeftBrace,
+    RightBrace,
+    LeftParen,
+    RightParen,
+    LeftBracket,
+    RightBracket,
+    Comma,
+    Semicolon,
+    Colon,
+    Arrow,          // =>
+    Assign,         // =
+    Define,         // :=
+    Dot,
+    KeywordPolicy,
+    KeywordSyntax,
+    KeywordMetadata,
+    KeywordProfile,
+    KeywordRule,
+    KeywordMap,
+    KeywordSource,
+    KeywordEnv,
+    KeywordIf,
+    KeywordThen,
+    KeywordWhen,
+    KeywordAnd,
+    KeywordOr,
+    KeywordNot,
+    KeywordPriority,
+    KeywordElse,
+    KeywordBecause,
+    KeywordSettings,
+    KeywordIgnore,
+    KeywordUntil,
+    KeywordEscalate,
+    KeywordTo,
+    KeywordRequireVex,
+    KeywordWarn,
+    KeywordMessage,
+    KeywordDefer,
+    KeywordAnnotate,
+    KeywordIn,
+    EqualEqual,
+    NotEqual,
+    LessThan,
+    LessThanOrEqual,
+    GreaterThan,
+    GreaterThanOrEqual,
+    Unknown,
+}
+
+/// <summary>
+/// Represents a single token in the policy DSL.
+/// </summary>
+public readonly record struct DslToken(
+    TokenKind Kind,
+    string Text,
+    SourceSpan Span,
+    object? Value = null);