From 4aa632761f1db5f18338c9bd568156c0259b9252 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Fri, 11 Jan 2019 14:57:19 +0300
Subject: make on dot typed actually work

---
 crates/ra_ide_api_light/src/formatting.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'crates/ra_ide_api_light/src/formatting.rs')

diff --git a/crates/ra_ide_api_light/src/formatting.rs b/crates/ra_ide_api_light/src/formatting.rs
index 1f3769209..4635fbd60 100644
--- a/crates/ra_ide_api_light/src/formatting.rs
+++ b/crates/ra_ide_api_light/src/formatting.rs
@@ -1,8 +1,16 @@
 use ra_syntax::{
-    ast, AstNode,
+    AstNode,
     SyntaxNode, SyntaxKind::*,
+    ast::{self, AstToken},
 };
 
+/// If the node is on the begining of the line, calculate indent.
+pub(crate) fn leading_indent(node: &SyntaxNode) -> Option<&str> {
+    let prev = node.prev_sibling()?;
+    let ws_text = ast::Whitespace::cast(prev)?.text();
+    ws_text.rfind('\n').map(|pos| &ws_text[pos + 1..])
+}
+
 pub(crate) fn extract_trivial_expression(block: &ast::Block) -> Option<&ast::Expr> {
     let expr = block.expr()?;
     if expr.syntax().text().contains('\n') {
-- 
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