5 files changed, 24 insertions, 102 deletions

diff --git a/crates/ra_editor/Cargo.toml b/crates/ra_editor/Cargo.toml
index 7791da156..c29be1350 100644
--- a/crates/ra_editor/Cargo.toml
+++ b/crates/ra_editor/Cargo.toml
@@ -12,6 +12,7 @@ join_to_string = "0.1.1"
 rustc-hash = "1.0"
 
 ra_syntax = { path = "../ra_syntax" }
+ra_text_edit = { path = "../ra_text_edit" }
 
 [dev-dependencies]
 test_utils = { path = "../test_utils" }
diff --git a/crates/ra_editor/src/code_actions.rs b/crates/ra_editor/src/code_actions.rs
index 6979251d1..688a89c3d 100644
--- a/crates/ra_editor/src/code_actions.rs
+++ b/crates/ra_editor/src/code_actions.rs
@@ -8,11 +8,11 @@ use ra_syntax::{
     SyntaxNodeRef, TextRange, TextUnit,
 };
 
-use crate::{find_node_at_offset, Edit, EditBuilder};
+use crate::{find_node_at_offset, TextEdit, TextEditBuilder};
 
 #[derive(Debug)]
 pub struct LocalEdit {
-    pub edit: Edit,
+    pub edit: TextEdit,
     pub cursor_position: Option<TextUnit>,
 }
 
@@ -26,7 +26,7 @@ pub fn flip_comma<'a>(
     let prev = non_trivia_sibling(comma, Direction::Prev)?;
     let next = non_trivia_sibling(comma, Direction::Next)?;
     Some(move || {
-        let mut edit = EditBuilder::new();
+        let mut edit = TextEditBuilder::new();
         edit.replace(prev.range(), next.text().to_string());
         edit.replace(next.range(), prev.text().to_string());
         LocalEdit {
@@ -49,7 +49,7 @@ pub fn add_derive<'a>(
             .filter(|(name, _arg)| name == "derive")
             .map(|(_name, arg)| arg)
             .next();
-        let mut edit = EditBuilder::new();
+        let mut edit = TextEditBuilder::new();
         let offset = match derive_attr {
             None => {
                 edit.insert(node_start, "#[derive()]\n".to_string());
@@ -82,7 +82,7 @@ pub fn add_impl<'a>(
 
     Some(move || {
         let type_params = nominal.type_param_list();
-        let mut edit = EditBuilder::new();
+        let mut edit = TextEditBuilder::new();
         let start_offset = nominal.syntax().range().end();
         let mut buf = String::new();
         buf.push_str("\n\nimpl");
@@ -129,7 +129,7 @@ pub fn introduce_variable<'a>(
     }
     return Some(move || {
         let mut buf = String::new();
-        let mut edit = EditBuilder::new();
+        let mut edit = TextEditBuilder::new();
 
         buf.push_str("let var_name = ");
         expr.syntax().text().push_to(&mut buf);
diff --git a/crates/ra_editor/src/edit.rs b/crates/ra_editor/src/edit.rs
deleted file mode 100644
index 372b8d14c..000000000
--- a/crates/ra_editor/src/edit.rs
+++ /dev/null
@@ -1,83 +0,0 @@
-use crate::{TextRange, TextUnit};
-use ra_syntax::{text_utils::contains_offset_nonstrict, AtomEdit};
-
-#[derive(Debug, Clone)]
-pub struct Edit {
-    atoms: Vec<AtomEdit>,
-}
-
-#[derive(Debug)]
-pub struct EditBuilder {
-    atoms: Vec<AtomEdit>,
-}
-
-impl EditBuilder {
-    pub fn new() -> EditBuilder {
-        EditBuilder { atoms: Vec::new() }
-    }
-    pub fn replace(&mut self, range: TextRange, replace_with: String) {
-        self.atoms.push(AtomEdit::replace(range, replace_with))
-    }
-    pub fn delete(&mut self, range: TextRange) {
-        self.atoms.push(AtomEdit::delete(range))
-    }
-    pub fn insert(&mut self, offset: TextUnit, text: String) {
-        self.atoms.push(AtomEdit::insert(offset, text))
-    }
-    pub fn finish(self) -> Edit {
-        let mut atoms = self.atoms;
-        atoms.sort_by_key(|a| (a.delete.start(), a.delete.end()));
-        for (a1, a2) in atoms.iter().zip(atoms.iter().skip(1)) {
-            assert!(a1.delete.end() <= a2.delete.start())
-        }
-        Edit { atoms }
-    }
-    pub fn invalidates_offset(&self, offset: TextUnit) -> bool {
-        self.atoms
-            .iter()
-            .any(|atom| contains_offset_nonstrict(atom.delete, offset))
-    }
-}
-
-impl Edit {
-    pub fn into_atoms(self) -> Vec<AtomEdit> {
-        self.atoms
-    }
-
-    pub fn apply(&self, text: &str) -> String {
-        let mut total_len = text.len();
-        for atom in self.atoms.iter() {
-            total_len += atom.insert.len();
-            total_len -= u32::from(atom.delete.end() - atom.delete.start()) as usize;
-        }
-        let mut buf = String::with_capacity(total_len);
-        let mut prev = 0;
-        for atom in self.atoms.iter() {
-            let start = u32::from(atom.delete.start()) as usize;
-            let end = u32::from(atom.delete.end()) as usize;
-            if start > prev {
-                buf.push_str(&text[prev..start]);
-            }
-            buf.push_str(&atom.insert);
-            prev = end;
-        }
-        buf.push_str(&text[prev..text.len()]);
-        assert_eq!(buf.len(), total_len);
-        buf
-    }
-
-    pub fn apply_to_offset(&self, offset: TextUnit) -> Option<TextUnit> {
-        let mut res = offset;
-        for atom in self.atoms.iter() {
-            if atom.delete.start() >= offset {
-                break;
-            }
-            if offset < atom.delete.end() {
-                return None;
-            }
-            res += TextUnit::of_str(&atom.insert);
-            res -= atom.delete.len();
-        }
-        Some(res)
-    }
-}
diff --git a/crates/ra_editor/src/lib.rs b/crates/ra_editor/src/lib.rs
index ce080ee97..36cabed25 100644
--- a/crates/ra_editor/src/lib.rs
+++ b/crates/ra_editor/src/lib.rs
@@ -1,5 +1,4 @@
 mod code_actions;
-mod edit;
 mod extend_selection;
 mod folding_ranges;
 mod line_index;
@@ -10,14 +9,13 @@ mod typing;
 
 pub use self::{
     code_actions::{add_derive, add_impl, flip_comma, introduce_variable, LocalEdit},
-    edit::{Edit, EditBuilder},
     extend_selection::extend_selection,
     folding_ranges::{folding_ranges, Fold, FoldKind},
     line_index::{LineCol, LineIndex},
     symbols::{file_structure, file_symbols, FileSymbol, StructureNode},
     typing::{join_lines, on_enter, on_eq_typed},
 };
-pub use ra_syntax::AtomEdit;
+use ra_text_edit::{TextEdit, TextEditBuilder};
 use ra_syntax::{
     algo::find_leaf_at_offset,
     ast::{self, AstNode, NameOwner},
diff --git a/crates/ra_editor/src/typing.rs b/crates/ra_editor/src/typing.rs
index 01acdda7c..46a6e2d62 100644
--- a/crates/ra_editor/src/typing.rs
+++ b/crates/ra_editor/src/typing.rs
@@ -3,13 +3,14 @@ use std::mem;
 use ra_syntax::{
     algo::{find_covering_node, find_leaf_at_offset, LeafAtOffset},
     ast,
-    text_utils::{contains_offset_nonstrict, intersect},
+    text_utils::intersect,
     AstNode, SourceFileNode, SyntaxKind,
     SyntaxKind::*,
     SyntaxNodeRef, TextRange, TextUnit,
 };
+use ra_text_edit::text_utils::contains_offset_nonstrict;
 
-use crate::{find_node_at_offset, EditBuilder, LocalEdit};
+use crate::{find_node_at_offset, TextEditBuilder, LocalEdit};
 
 pub fn join_lines(file: &SourceFileNode, range: TextRange) -> LocalEdit {
     let range = if range.is_empty() {
@@ -18,7 +19,7 @@ pub fn join_lines(file: &SourceFileNode, range: TextRange) -> LocalEdit {
         let pos = match text.find('\n') {
             None => {
                 return LocalEdit {
-                    edit: EditBuilder::new().finish(),
+                    edit: TextEditBuilder::new().finish(),
                     cursor_position: None,
                 };
             }
@@ -30,7 +31,7 @@ pub fn join_lines(file: &SourceFileNode, range: TextRange) -> LocalEdit {
     };
 
     let node = find_covering_node(file.syntax(), range);
-    let mut edit = EditBuilder::new();
+    let mut edit = TextEditBuilder::new();
     for node in node.descendants() {
         let text = match node.leaf_text() {
             Some(text) => text,
@@ -72,7 +73,7 @@ pub fn on_enter(file: &SourceFileNode, offset: TextUnit) -> Option<LocalEdit> {
     let indent = node_indent(file, comment.syntax())?;
     let inserted = format!("\n{}{} ", indent, prefix);
     let cursor_position = offset + TextUnit::of_str(&inserted);
-    let mut edit = EditBuilder::new();
+    let mut edit = TextEditBuilder::new();
     edit.insert(offset, inserted);
     Some(LocalEdit {
         edit: edit.finish(),
@@ -122,7 +123,7 @@ pub fn on_eq_typed(file: &SourceFileNode, offset: TextUnit) -> Option<LocalEdit>
         return None;
     }
     let offset = let_stmt.syntax().range().end();
-    let mut edit = EditBuilder::new();
+    let mut edit = TextEditBuilder::new();
     edit.insert(offset, ";".to_string());
     Some(LocalEdit {
         edit: edit.finish(),
@@ -130,7 +131,12 @@ pub fn on_eq_typed(file: &SourceFileNode, offset: TextUnit) -> Option<LocalEdit>
     })
 }
 
-fn remove_newline(edit: &mut EditBuilder, node: SyntaxNodeRef, node_text: &str, offset: TextUnit) {
+fn remove_newline(
+    edit: &mut TextEditBuilder,
+    node: SyntaxNodeRef,
+    node_text: &str,
+    offset: TextUnit,
+) {
     if node.kind() != WHITESPACE || node_text.bytes().filter(|&b| b == b'\n').count() != 1 {
         // The node is either the first or the last in the file
         let suff = &node_text[TextRange::from_to(
@@ -191,7 +197,7 @@ fn is_trailing_comma(left: SyntaxKind, right: SyntaxKind) -> bool {
     }
 }
 
-fn join_single_expr_block(edit: &mut EditBuilder, node: SyntaxNodeRef) -> Option<()> {
+fn join_single_expr_block(edit: &mut TextEditBuilder, node: SyntaxNodeRef) -> Option<()> {
     let block = ast::Block::cast(node.parent()?)?;
     let block_expr = ast::BlockExpr::cast(block.syntax().parent()?)?;
     let expr = single_expr(block)?;
@@ -269,14 +275,14 @@ fn foo() {
     fn test_join_lines_lambda_block() {
         check_join_lines(
             r"
-pub fn reparse(&self, edit: &AtomEdit) -> File {
+pub fn reparse(&self, edit: &AtomTextEdit) -> File {
     <|>self.incremental_reparse(edit).unwrap_or_else(|| {
         self.full_reparse(edit)
     })
 }
 ",
             r"
-pub fn reparse(&self, edit: &AtomEdit) -> File {
+pub fn reparse(&self, edit: &AtomTextEdit) -> File {
     <|>self.incremental_reparse(edit).unwrap_or_else(|| self.full_reparse(edit))
 }
 ",