feat: add is_empty method to check if iterator contains no pairs (#1132)

nyurik · web-flow · commit c51e047a68f5 · 2025-10-26T08:38:22.000+08:00
diff --git a/pest/src/iterators/pairs.rs b/pest/src/iterators/pairs.rs
@@ -374,6 +374,11 @@ impl<'i, R: RuleType> Pairs<'i, R> {
         }
     }
 
+    /// Returns `true` if the iterator contains no `Pair`s.
+    pub fn is_empty(&self) -> bool {
+        self.pairs_count == 0
+    }
+
     /// Generates a string that stores the lexical information of `self` in
     /// a pretty-printed JSON format.
     #[cfg(feature = "pretty-print")]

Original file line number	Diff line number	Diff line change
`@@ -374,6 +374,11 @@ impl<'i, R: RuleType> Pairs<'i, R> {`
`374`	`374`	`}`
`375`	`375`	`}`
`376`	`376`
	`377`	+ /// Returns `true` if the iterator contains no `Pair`s.
	`378`	`+ pub fn is_empty(&self) -> bool {`
	`379`	`+ self.pairs_count == 0`
	`380`	`+ }`
	`381`	`+`
`377`	`382`	/// Generates a string that stores the lexical information of `self` in
`378`	`383`	`/// a pretty-printed JSON format.`
`379`	`384`	`#[cfg(feature = "pretty-print")]`