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authorpommicket <pommicket@gmail.com>2022-12-10 12:31:03 -0500
committerpommicket <pommicket@gmail.com>2022-12-10 12:31:03 -0500
commitb7cbc84f296024d3a89e4604c1b114e79b4e752e (patch)
tree6e093847a80a30ee93e929c793c7076062454692 /lsp.h
parenta604ad77ff7ef6a75cccdeb86d1a5608caf7c2a6 (diff)
more lsp
Diffstat (limited to 'lsp.h')
-rw-r--r--lsp.h180
1 files changed, 180 insertions, 0 deletions
diff --git a/lsp.h b/lsp.h
new file mode 100644
index 0000000..0bc5f41
--- /dev/null
+++ b/lsp.h
@@ -0,0 +1,180 @@
+// @TODO:
+// - document this and lsp.c.
+// - maximum queue size for requests/responses just in case?
+// - delete old sent requests
+// (if the server never sends a response)
+// - TESTING: make rust-analyzer-slow (waits 10s before sending response)
+
+typedef enum {
+ LSP_REQUEST,
+ LSP_RESPONSE
+} LSPMessageType;
+
+typedef enum {
+ LSP_NONE,
+
+ // client-to-server
+ LSP_INITIALIZE,
+ LSP_INITIALIZED,
+ LSP_OPEN,
+ LSP_COMPLETION,
+ LSP_SHUTDOWN,
+ LSP_EXIT,
+
+ // server-to-client
+ LSP_SHOW_MESSAGE,
+ LSP_LOG_MESSAGE
+} LSPRequestType;
+
+typedef struct {
+ // buffer language
+ Language language;
+ // freed by lsp_request_free
+ char *path;
+ // freed by lsp_request_free
+ char *file_contents;
+} LSPRequestOpen;
+
+typedef enum {
+ ERROR = 1,
+ WARNING = 2,
+ INFO = 3,
+ LOG = 4
+} LSPWindowMessageType;
+
+typedef struct {
+ LSPWindowMessageType type;
+ // freed by lsp_request_free
+ char *message;
+} LSPRequestMessage;
+
+typedef struct {
+ // freed by lsp_request_free
+ char *path;
+ u32 line;
+ // the **UTF-16** "character" offset within the line
+ u32 character;
+} LSPDocumentPosition;
+
+typedef struct {
+ LSPDocumentPosition position;
+} LSPRequestCompletion;
+
+typedef struct {
+ // id is set by lsp.c; you shouldn't set it.
+ u32 id;
+ LSPRequestType type;
+ union {
+ LSPRequestOpen open;
+ LSPRequestCompletion completion;
+ // for LSP_SHOW_MESSAGE and LSP_LOG_MESSAGE
+ LSPRequestMessage message;
+ } data;
+} LSPRequest;
+
+typedef struct {
+ u32 offset;
+} LSPString;
+
+typedef struct {
+ u32 line;
+ u32 character;
+} LSPPosition;
+
+typedef struct {
+ LSPPosition start;
+ LSPPosition end;
+} LSPRange;
+
+// see InsertTextFormat in the LSP spec.
+typedef enum {
+ // plain text
+ LSP_TEXT_EDIT_PLAIN = 1,
+ // snippet e.g. "some_method($1, $2)$0"
+ LSP_TEXT_EDIT_SNIPPET = 2
+} LSPTextEditType;
+
+typedef struct {
+ LSPTextEditType type;
+
+ // if set to true, `range` should be ignored
+ // -- this is a completion which uses insertText.
+ // how to handle this:
+ // "VS Code when code complete is requested in this example
+ // `con<cursor position>` and a completion item with an `insertText` of
+ // `console` is provided it will only insert `sole`"
+ bool at_cursor;
+
+ LSPRange range;
+ LSPString new_text;
+} LSPTextEdit;
+
+typedef struct {
+ LSPString label;
+ LSPTextEdit text_edit;
+ // note: the items are sorted here in this file,
+ // so you probably don't need to access this.
+ LSPString sort_text;
+} LSPCompletionItem;
+
+typedef struct {
+ // dynamic array
+ LSPCompletionItem *items;
+} LSPResponseCompletion;
+
+typedef LSPRequestType LSPResponseType;
+typedef struct {
+ LSPResponseType type;
+ // LSP responses tend to have a lot of strings.
+ // to avoid doing a ton of allocations+frees,
+ // they're all stored here.
+ char *string_data;
+ union {
+ LSPResponseCompletion completion;
+ } data;
+} LSPResponse;
+
+typedef struct {
+ LSPMessageType type;
+ union {
+ LSPRequest request;
+ LSPResponse response;
+ } u;
+} LSPMessage;
+
+typedef struct LSP {
+ Process process;
+ u32 request_id;
+ LSPMessage *messages;
+ SDL_mutex *messages_mutex;
+ LSPRequest *requests_client2server;
+ LSPRequest *requests_server2client;
+ // we keep track of client-to-server requests
+ // so that we can process responses.
+ // also fucking rust-analyzer gives "waiting for cargo metadata or cargo check"
+ // WHY NOT JUST WAIT UNTIL YOUVE DONE THAT BEFORE SENDING THE INITIALIZE RESPONSE. YOU HAVE NOT FINISHED INITIALIZATION. YOU ARE LYING.
+ // YOU GIVE A -32801 ERROR CODE WHICH IS "ContentModified" -- WHAT THE FUCK? THATS JUST COMPLETLY WRONG
+ // so we need to re-send requests in that case.
+ LSPRequest *requests_sent;
+ SDL_mutex *requests_mutex;
+ bool initialized; // has the response to the initialize request been sent?
+ SDL_Thread *communication_thread;
+ SDL_sem *quit_sem;
+ char *received_data; // dynamic array
+ SDL_mutex *error_mutex;
+ char error[256];
+} LSP;
+
+// @TODO: function declarations
+
+// returns true if there's an error.
+// returns false and sets error to "" if there's no error.
+// if clear = true, the error will be cleared.
+// you can set error = NULL, error_size = 0, clear = true to just clear the error
+bool lsp_get_error(LSP *lsp, char *error, size_t error_size, bool clear);
+void lsp_message_free(LSPMessage *message);
+void lsp_send_request(LSP *lsp, const LSPRequest *request);
+const char *lsp_response_string(const LSPResponse *response, LSPString string);
+bool lsp_create(LSP *lsp, const char *analyzer_command);
+bool lsp_next_message(LSP *lsp, LSPMessage *message);
+void lsp_free(LSP *lsp);