WIP

gpui/src/lib.rs

@@ -25,7 +25,8 @@ pub mod json;
 pub mod keymap;
 mod platform;
 pub use gpui_macros::test;
-pub use platform::{Event, FontSystem, PathPromptOptions, Platform, PromptLevel};
+pub use platform::FontSystem;
+pub use platform::{Event, PathPromptOptions, Platform, PromptLevel};
 pub use presenter::{
     AfterLayoutContext, Axis, DebugContext, EventContext, LayoutContext, PaintContext,
     SizeConstraint, Vector2FExt,

zed/src/editor/buffer/point.rs

@@ -72,6 +72,12 @@ impl Sub for Point {
 
 impl<'a> AddAssign<&'a Self> for Point {
     fn add_assign(&mut self, other: &'a Self) {
+        *self += *self;
+    }
+}
+
+impl AddAssign<Self> for Point {
+    fn add_assign(&mut self, other: Self) {
         if other.row == 0 {
             self.column += other.column;
         } else {

zed/src/editor/display_map/fold_map.rs

@@ -19,7 +19,7 @@ use std::{
 };
 
 #[derive(Copy, Clone, Debug, Default, Eq, Ord, PartialOrd, PartialEq)]
-pub struct OutputPoint(super::Point);
+pub struct OutputPoint(pub super::Point);
 
 impl OutputPoint {
     pub fn new(row: u32, column: u32) -> Self {

zed/src/editor/display_map/tab_map.rs

@@ -4,7 +4,7 @@ use super::fold_map::{
     Chunks as InputChunks, Edit as InputEdit, HighlightedChunks as InputHighlightedChunks,
     OutputOffset as InputOffset, OutputPoint as InputPoint, Snapshot as InputSnapshot,
 };
-use crate::{settings::StyleId, util::Bias};
+use crate::{editor::rope, settings::StyleId, util::Bias};
 use std::{
     mem,
     ops::{AddAssign, Range},
@@ -232,7 +232,7 @@ impl Snapshot {
 pub struct OutputOffset(pub usize);
 
 #[derive(Copy, Clone, Debug, Default, Eq, Ord, PartialOrd, PartialEq)]
-pub struct OutputPoint(super::Point);
+pub struct OutputPoint(pub super::Point);
 
 impl OutputPoint {
     pub fn new(row: u32, column: u32) -> Self {
@@ -262,7 +262,7 @@ impl OutputPoint {
 
 impl AddAssign<Self> for OutputPoint {
     fn add_assign(&mut self, rhs: Self) {
-        self.0 += rhs.0;
+        self.0 += &rhs.0;
     }
 }
 
@@ -281,6 +281,20 @@ pub struct TextSummary {
     pub longest_row_chars: u32,
 }
 
+impl<'a> From<&'a str> for TextSummary {
+    fn from(text: &'a str) -> Self {
+        let sum = rope::TextSummary::from(text);
+
+        TextSummary {
+            lines: sum.lines,
+            first_line_chars: sum.first_line_chars,
+            last_line_chars: sum.last_line_chars,
+            longest_row: sum.longest_row,
+            longest_row_chars: sum.longest_row_chars,
+        }
+    }
+}
+
 impl<'a> std::ops::AddAssign<&'a Self> for TextSummary {
     fn add_assign(&mut self, other: &'a Self) {
         let joined_chars = self.last_line_chars + other.first_line_chars;

zed/src/editor/display_map/wrap_map.rs

@@ -1,6 +1,5 @@
 use super::tab_map::{
-    Edit as InputEdit, OutputOffset as InputOffset, OutputPoint as InputPoint,
-    Snapshot as InputSnapshot, TextSummary,
+    Edit as InputEdit, OutputPoint as InputPoint, Snapshot as InputSnapshot, TextSummary,
 };
 use crate::{
     editor::Point,
@@ -200,11 +199,11 @@ impl BackgroundWrapper {
                 &(),
             );
 
-            for edit in edits {
-                if edit.new_rows.start > new_transforms.summary().input.row() {
+            while let Some(edit) = edits.next() {
+                if edit.new_rows.start > new_transforms.summary().input.lines.row {
                     new_transforms.push(
-                        Transform::isomorphic(new_snapshot.input.text_summary_for_rows(
-                            new_transforms.summary().input.row()..edit.new_rows.start,
+                        Transform::isomorphic(new_snapshot.text_summary_for_rows(
+                            new_transforms.summary().input.lines.row..edit.new_rows.start,
                         )),
                         &(),
                     );
@@ -238,7 +237,7 @@ impl BackgroundWrapper {
                     }
                 }
 
-                old_cursor.seek_forward(&edit.old_rows.end, Bias::Right, &());
+                old_cursor.seek_forward(&InputPoint::new(edit.old_rows.end, 0), Bias::Right, &());
                 if let Some(next_edit) = edits.peek() {
                     if next_edit.old_rows.start > old_cursor.seek_end(&()).row() {
                         new_transforms.push(
@@ -249,7 +248,11 @@ impl BackgroundWrapper {
                         );
                         old_cursor.next(&());
                         new_transforms.push_tree(
-                            old_cursor.slice(&next_edit.old_rows.start, Bias::Right, &()),
+                            old_cursor.slice(
+                                &InputPoint::new(next_edit.old_rows.start, 0),
+                                Bias::Right,
+                                &(),
+                            ),
                             &(),
                         );
                     }
@@ -330,7 +333,7 @@ impl sum_tree::Summary for TransformSummary {
 
 impl<'a> sum_tree::Dimension<'a, TransformSummary> for InputPoint {
     fn add_summary(&mut self, summary: &'a TransformSummary, _: &()) {
-        *self += &InputPoint(summary.input.lines);
+        *self += InputPoint(summary.input.lines);
     }
 }
 
@@ -392,7 +395,7 @@ mod tests {
                 font_system.clone(),
             );
             let edit = InputEdit {
-                old_lines: Default::default()..Default::default(),
+                old_lines: Default::default()..tabs_snapshot.max_point(),
                 new_lines: Default::default()..tabs_snapshot.max_point(),
             };
             wrapper.sync(tabs_snapshot.clone(), vec![edit]);