Add functionality for skipping paragraphs up and down

1 files changed, 32 insertions, 0 deletions

diff --git a/src/Buffer.zig b/src/Buffer.zig
index f9a1576..bb6d3ce 100644
--- a/src/Buffer.zig
+++ b/src/Buffer.zig
@@ -94,6 +94,22 @@ pub fn backwardDeleteChar(self: *Buffer) !void {
     return self.deleteChar();
 }
 
+pub fn backwardParagraph(self: *Buffer) void {
+    if (self.cy == 0) {
+        return;
+    }
+
+    self.cy -= 1;
+    while (self.cy > 0) : (self.cy -= 1) {
+        // TODO: I'm lazy but also consider lines of only whitespace
+        if (self.rows.items[self.cy].data.items.len == 0) {
+            break;
+        }
+    }
+
+    self.cx = 0;
+}
+
 pub fn cleanWhiteSpace(self: *Buffer) !void {
     for (self.rows.items) |*row| {
         try row.cleanWhiteSpace(self);
@@ -272,6 +288,22 @@ pub fn forwardChar(self: *Buffer) void {
     }
 }
 
+pub fn forwardParagraph(self: *Buffer) void {
+    if (self.cy == self.rows.items.len) {
+        return;
+    }
+
+    self.cy += 1;
+    while (self.cy < self.rows.items.len) : (self.cy += 1) {
+        // TODO: I'm lazy but also consider whitespace-only lines
+        if (self.rows.items[self.cy].data.items.len == 0) {
+            break;
+        }
+    }
+
+    self.cx = 0;
+}
+
 // TODO: Make use of the callback feature to go to the final line while typing in.
 pub fn goToLine(self: *Buffer, editor: *Editor) !void {
     if (try editor.prompt(self.allocator, "Goto line")) |line_str| {