From 2fb854ccdae6f1f12b60441e5c3b283bdc81fb0a Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 7 Aug 2018 18:28:30 +0300
Subject: :tada: extend selection

---
 code/native/src/lib.rs | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

(limited to 'code/native/src/lib.rs')

diff --git a/code/native/src/lib.rs b/code/native/src/lib.rs
index aae7ad2f3..cb304a141 100644
--- a/code/native/src/lib.rs
+++ b/code/native/src/lib.rs
@@ -3,6 +3,7 @@ extern crate neon;
 extern crate libeditor;
 
 use neon::prelude::*;
+use libeditor::TextRange;
 
 pub struct Wrapper {
     inner: libeditor::File,
@@ -19,8 +20,8 @@ declare_types! {
         }
 
         method syntaxTree(mut cx) {
-            let this = cx.this();
             let tree = {
+            let this = cx.this();
                 let guard = cx.lock();
                 let wrapper = this.borrow(&guard);
                 wrapper.inner.syntax_tree()
@@ -29,8 +30,8 @@ declare_types! {
         }
 
         method highlight(mut cx) {
-            let this = cx.this();
             let highlights = {
+                let this = cx.this();
                 let guard = cx.lock();
                 let wrapper = this.borrow(&guard);
                 wrapper.inner.highlight()
@@ -51,6 +52,33 @@ declare_types! {
 
             Ok(res.upcast())
         }
+
+        method extendSelection(mut cx) {
+            let from_offset = cx.argument::<JsNumber>(0)?.value() as u32;
+            let to_offset = cx.argument::<JsNumber>(1)?.value() as u32;
+            let text_range = TextRange::from_to(from_offset.into(), to_offset.into());
+            let extended_range = {
+                let this = cx.this();
+                let guard = cx.lock();
+                let wrapper = this.borrow(&guard);
+                wrapper.inner.extend_selection(text_range)
+            };
+
+            match extended_range {
+                None => Ok(cx.null().upcast()),
+                Some(range) => {
+                    let start: u32 = range.start().into();
+                    let end: u32 = range.end().into();
+                    let start = cx.number(start);
+                    let end = cx.number(end);
+                    let arr = cx.empty_array();
+                    arr.set(&mut cx, 0, start)?;
+                    arr.set(&mut cx, 1, end)?;
+                    Ok(arr.upcast())
+                }
+            }
+
+        }
     }
 
 }
-- 
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