Parser::append

src/roxy.rs

@@ -37,6 +37,10 @@ impl<'a> Parser<'a> {
     pub fn push<P: AsParse>(&mut self, parser: &'a mut P) {
         self.steps.push(parser.as_parse_mut());
     }
+
+    pub fn append(&mut self, parsers: &mut Vec<&'a mut dyn Parse>) {
+        self.steps.append(parsers);
+    }
 }
 
 impl<'a> Parse for Parser<'a> {
@@ -141,3 +145,27 @@ impl Roxy {
         Self::mkdir_and_open(&output).and_then(|mut f| f.write_all(&buf))
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::{Parse, Parser};
+
+    struct TestParser;
+    impl TestParser {
+        pub fn new() -> Self {
+            Self
+        }
+    }
+
+    impl Parse for TestParser {
+        fn parse(
+            &mut self,
+            path: &str,
+            src: &[u8],
+            dst: &mut Vec<u8>,
+        ) -> Result<(), crate::error::Error> {
+            Ok(())
+        }
+    }
+}
+