toolchain: add new debugging tool using magenta_debug

2026-06-06 17:54:20 +01:00
parent 5bb36a916c
commit a6bdcc6c49
40 changed files with 2211 additions and 1 deletions
@@ -0,0 +1,17 @@
+#ifndef LINE_ED_BUFFER_H_
+#define LINE_ED_BUFFER_H_
+
+#include <fx/encoding.h>
+#include <stddef.h>
+
+struct line_ed;
+
+/* returns a pointer to the start of the line based on the given `y`
+ * coordinate */
+extern const fx_wchar *line_start(struct line_ed *ed, size_t y);
+/* returns the length of the line based on the given `y` coordinate.
+ * for any line other than the last line in the buffer, this length
+ * INCLUDES the trailing linefeed. */
+extern size_t line_length(struct line_ed *ed, size_t y);
+
+#endif