From caf81c5a2c8b9432792c652edd0dcf1f64f7a4f1 Mon Sep 17 00:00:00 2001
From: pommicket <pommicket@gmail.com>
Date: Tue, 20 Dec 2022 12:25:18 -0500
Subject: start didChange

---
 buffer.c            | 16 +++++++++++++++-
 lsp-write-request.c |  2 +-
 lsp.c               | 10 ++++++----
 lsp.h               |  3 +--
 4 files changed, 23 insertions(+), 8 deletions(-)

diff --git a/buffer.c b/buffer.c
index ad8363c..0cd5d29 100644
--- a/buffer.c
+++ b/buffer.c
@@ -1370,6 +1370,12 @@ static Status buffer_insert_lines(TextBuffer *buffer, u32 where, u32 number) {
 	return false;
 }
 
+static void buffer_send_lsp_did_change_request(LSP *lsp, TextBuffer *buffer, BufferPos pos,
+	u32 nchars_deleted, String32 new_text) {
+	// @TODO
+	abort();
+}
+
 // inserts the given text, returning the position of the end of the text
 BufferPos buffer_insert_text_at_pos(TextBuffer *buffer, BufferPos pos, String32 str) {
 	buffer_pos_validate(buffer, &pos);
@@ -1404,6 +1410,10 @@ BufferPos buffer_insert_text_at_pos(TextBuffer *buffer, BufferPos pos, String32
 	str32_remove_all_instances_of_char(&str, '\r');
 
 
+	LSP *lsp = buffer_lsp(buffer);
+	if (lsp)
+		buffer_send_lsp_did_change_request(lsp, buffer, pos, 0, str);
+
 	if (buffer->store_undo_events) {
 		BufferEdit *last_edit = arr_lastp(buffer->undo_history);
 		i64 where_in_last_edit = last_edit ? buffer_pos_diff(buffer, last_edit->pos, pos) : -1;
@@ -1650,6 +1660,10 @@ void buffer_delete_chars_at_pos(TextBuffer *buffer, BufferPos pos, i64 nchars_)
 	// Not doing this might also cause other bugs, best to keep it here just in case.
 	nchars = (u32)buffer_get_text_at_pos(buffer, pos, NULL, nchars);
 
+	LSP *lsp = buffer_lsp(buffer);
+	if (lsp)
+		buffer_send_lsp_did_change_request(lsp, buffer, pos, nchars, (String32){0});
+
 	if (buffer->store_undo_events) {
 		// we need to make sure the undo history keeps track of the edit.
 		// we will either combine it with the previous BufferEdit, or create a new
@@ -2135,7 +2149,7 @@ Status buffer_load_file(TextBuffer *buffer, char const *filename) {
 					LSPRequest request = {.type = LSP_REQUEST_DID_OPEN};
 					LSPRequestDidOpen *open = &request.data.open;
 					open->file_contents = (char *)file_contents;
-					open->path = str_dup(filename);
+					open->document = str_dup(filename);
 					open->language = buffer_language(buffer);
 					lsp_send_request(lsp, &request);
 					file_contents = NULL; // don't free
diff --git a/lsp-write-request.c b/lsp-write-request.c
index 121392d..b7ce148 100644
--- a/lsp-write-request.c
+++ b/lsp-write-request.c
@@ -229,7 +229,7 @@ static void write_request(LSP *lsp, LSPRequest *request) {
 		const LSPRequestDidOpen *open = &request->data.open;
 		write_key_obj_start(o, "params");
 			write_key_obj_start(o, "textDocument");
-				write_key_file_uri(o, "uri", open->path);
+				write_key_file_uri(o, "uri", open->document);
 				write_key_string(o, "languageId", lsp_language_id(open->language));
 				write_key_number(o, "version", 1);
 				write_key_string(o, "text", open->file_contents);
diff --git a/lsp.c b/lsp.c
index b7aa991..b84abe2 100644
--- a/lsp.c
+++ b/lsp.c
@@ -42,7 +42,7 @@ static void lsp_request_free(LSPRequest *r) {
 		} break;
 	case LSP_REQUEST_DID_OPEN: {
 		LSPRequestDidOpen *open = &r->data.open;
-		free(open->path);
+		free(open->document);
 		free(open->file_contents);
 		} break;
 	case LSP_REQUEST_SHOW_MESSAGE:
@@ -618,7 +618,9 @@ void lsp_free(LSP *lsp) {
 
 void lsp_document_changed(LSP *lsp, const char *document, LSPDocumentChangeEvent change) {
 	// @TODO(optimization, eventually): batch changes (using the contentChanges array)
-	//LSPRequest request = {.type = LSP_REQUEST_DID_CHANGE};
-	//LSPRequestDidChange *change = &request.change;
-	abort(); // @TODO
+	LSPRequest request = {.type = LSP_REQUEST_DID_CHANGE};
+	LSPRequestDidChange *c = &request.data.change;
+	c->document = str_dup(document);
+	arr_add(c->changes, change);
+	lsp_send_request(lsp, &request);
 }
diff --git a/lsp.h b/lsp.h
index 170d883..20fdf2d 100644
--- a/lsp.h
+++ b/lsp.h
@@ -1,5 +1,4 @@
 // @TODO:
-// - make a real JSON output library
 // - use document IDs instead of strings (also lets us use real document version numbers)
 // - document this and lsp.c.
 // - maximum queue size for requests/responses just in case?
@@ -48,7 +47,7 @@ typedef struct {
 	// buffer language
 	Language language;
 	// freed by lsp_request_free
-	char *path;
+	char *document;
 	// freed by lsp_request_free
 	char *file_contents;
 } LSPRequestDidOpen;
-- 
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