implement into_luamulti for cursor move

2 files changed, 38 insertions, 3 deletions

diff --git a/src/state/editor/buffer.rs b/src/state/editor/buffer.rs
index 49c27b9..6e210ab 100644
--- a/src/state/editor/buffer.rs
+++ b/src/state/editor/buffer.rs
@@ -52,6 +52,10 @@ impl Buffer {
     }
 
     pub fn insert(&mut self, c: char) {
+        if self.lines.is_empty() {
+            return;
+        }
+
         match c {
             '\n' => {
                 let (a, b) = {
@@ -96,6 +100,10 @@ impl Buffer {
     }
 
     pub fn delete(&mut self) {
+        if self.lines.is_empty() {
+            return;
+        }
+
         if self.cursor.is_at_start() && !self.cursor.is_at_top() {
             let old_line = self.current_line_mut().clone();
             self.lines.remove(self.cursor.y());
@@ -108,7 +116,7 @@ impl Buffer {
                 .move_checked(CursorMove::Jump((new_x, self.cursor.y())));
 
             self.refresh_buffer_max()
-        } else if !self.cursor.is_at_top() {
+        } else if !self.cursor.is_at_start() {
             let x = self.cursor.x() - 1;
             self.current_line_mut().remove(x);
             self.refresh_line_max();
diff --git a/src/state/editor/mod.rs b/src/state/editor/mod.rs
index 279a164..058bbf6 100644
--- a/src/state/editor/mod.rs
+++ b/src/state/editor/mod.rs
@@ -1,10 +1,10 @@
 use self::{bar::EditorBarState, buffer::Buffer};
 
 use super::{GlobalState, DUMMY_STATE};
-use mlua::{Lua, UserData};
+use mlua::{Lua, Table, UserData};
 
-pub mod buffer;
 pub mod bar;
+pub mod buffer;
 
 #[derive(Default, Debug)]
 pub struct EditorState {
@@ -51,6 +51,33 @@ impl UserData for EditorState {
         });
 
         fields.add_field_function_get("bar", |_, _| Ok(DUMMY_STATE.editor.bar));
+
+        fields.add_field_function_get("content", |_, _| Ok(cfg!().buffer.as_string()));
+        fields.add_field_function_set("content", |_, _, content: String| {
+            cfg_mut!().buffer.set_lines_from_string(content);
+            Ok(())
+        });
+
+        fields.add_field_function_get("lines", |lua, _| {
+            let table = lua.create_table()?;
+
+            for (i, line) in cfg!().buffer.lines().iter().enumerate() {
+                table.set::<usize, &str>(i + 1, line.as_ref())?
+            }
+
+            Ok(table)
+        });
+        fields.add_field_function_set("lines", |_, _, content: Table| {
+            let mut vec = Vec::new();
+
+            for r in content.pairs::<usize, String>() {
+                let (_, line) = r?;
+                vec.push(line);
+            }
+
+            cfg_mut!().buffer.set_lines(vec);
+            Ok(())
+        });
     }
 
     fn add_methods<'lua, M: mlua::prelude::LuaUserDataMethods<'lua, Self>>(methods: &mut M) {