api: add SetMatches::matched_all

This complements `matched_any` with a means to check if a set of
patterns all matched the haystack.

PR #1228

src/regexset/bytes.rs

@@ -482,6 +482,24 @@ impl SetMatches {
         !self.0.is_empty()
     }
 
+    /// Whether all patterns in this set matched.
+    ///
+    /// # Example
+    ///
+    /// ```
+    /// use regex::bytes::RegexSet;
+    ///
+    /// let set = RegexSet::new(&[
+    ///     r"^foo",
+    ///     r"[a-z]+\.com",
+    /// ]).unwrap();
+    /// let matches = set.matches(b"foo.example.com");
+    /// assert!(matches.matched_all());
+    /// ```
+    pub fn matched_all(&self) -> bool {
+        self.0.is_full()
+    }
+
     /// Whether the regex at the given index matched.
     ///
     /// The index for a regex is determined by its insertion order upon the

src/regexset/string.rs

@@ -478,6 +478,24 @@ impl SetMatches {
         !self.0.is_empty()
     }
 
+    /// Whether all patterns in this set matched.
+    ///
+    /// # Example
+    ///
+    /// ```
+    /// use regex::RegexSet;
+    ///
+    /// let set = RegexSet::new(&[
+    ///     r"^foo",
+    ///     r"[a-z]+\.com",
+    /// ]).unwrap();
+    /// let matches = set.matches("foo.example.com");
+    /// assert!(matches.matched_all());
+    /// ```
+    pub fn matched_all(&self) -> bool {
+        self.0.is_full()
+    }
+
     /// Whether the regex at the given index matched.
     ///
     /// The index for a regex is determined by its insertion order upon the