Add Token::original_span rather than making Token::span pub

filter-parser/src/lib.rs

@@ -71,7 +71,7 @@ const MAX_FILTER_DEPTH: usize = 200;
 #[derive(Debug, Clone, Eq)]
 pub struct Token<'a> {
     /// The token in the original input, it should be used when possible.
-    pub span: Span<'a>,
+    span: Span<'a>,
     /// If you need to modify the original input you can use the `value` field
     /// to store your modified input.
     value: Option<String>,
@@ -100,6 +100,11 @@ impl<'a> Token<'a> {
         Error::new_from_external(self.span, error)
     }
 
+    /// Returns a copy of the span this token was created with.
+    pub fn original_span(&self) -> Span<'a> {
+        self.span
+    }
+
     pub fn parse_finite_float(&self) -> Result<f64, Error> {
         let value: f64 = self.value().parse().map_err(|e| self.as_external_error(e))?;
         if value.is_finite() {