From 750306b5bd44d9c15c4480e923614e11b85ac121 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Danie=CC=88l=20de=20Kok?= <me@danieldk.eu>
Date: Tue, 3 May 2016 10:10:12 +0200
Subject: [PATCH] Make features layer grepable.

---
 src/layer.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/layer.rs b/src/layer.rs
index bd42dfd..094f5f0 100644
--- a/src/layer.rs
+++ b/src/layer.rs
@@ -1,4 +1,4 @@
-use conllx::Token;
+use conllx::{Features, Token};
 use std::collections::HashMap;
 
 pub type LayerCallback = fn(&Token) -> Option<&str>;
@@ -8,6 +8,7 @@ lazy_static! {
         {
             let mut m: HashMap<&'static str, LayerCallback> = HashMap::new();
             m.insert("cpos", cpos);
+            m.insert("features", features);
             m.insert("form", form);
             m.insert("headrel", head_rel);
             m.insert("pheadrel", p_head_rel);
@@ -21,6 +22,10 @@ fn cpos(t: &Token) -> Option<&str> {
     t.cpos()
 }
 
+fn features(t: &Token) -> Option<&str> {
+    t.features().as_ref().map(Features::as_str)
+}
+
 fn form(t: &Token) -> Option<&str> {
     t.form()
 }