WIP LSP client

This contains the start of an LSP client.
Nothing (except starting the LSP server) works
at the moment and the feature is disabled by default.

1 files changed, 75 insertions, 0 deletions

diff --git a/src/dged/lsp.h b/src/dged/lsp.h
new file mode 100644
index 0000000..3fd6285
--- /dev/null
+++ b/src/dged/lsp.h
@@ -0,0 +1,75 @@
+#ifndef _LSP_H
+#define _LSP_H
+
+#include "location.h"
+#include "s8.h"
+
+struct buffer;
+struct lsp;
+struct reactor;
+
+typedef uint32_t request_id;
+
+struct lsp_response {
+  request_id id;
+  bool ok;
+  union payload_data {
+    void *result;
+    struct s8 error;
+  } payload;
+};
+
+struct lsp_notification {
+  int something;
+};
+
+struct lsp_client {
+  void (*log_message)(int type, struct s8 msg);
+};
+
+struct hover {
+  struct s8 contents;
+
+  bool has_range;
+  struct region *range;
+};
+
+struct text_doc_item {
+  struct s8 uri;
+  struct s8 language_id;
+  uint32_t version;
+  struct s8 text;
+};
+
+struct text_doc_position {
+  struct s8 uri;
+  struct location pos;
+};
+
+struct initialize_params {
+  struct s8 client_name;
+  struct s8 client_version;
+};
+
+// lifecycle functions
+struct lsp *lsp_create(char *const command[], struct reactor *reactor,
+                       struct buffer *stderr_buffer,
+                       struct lsp_client client_impl, const char *name);
+uint32_t lsp_update(struct lsp *lsp, struct lsp_response **responses,
+                    uint32_t responses_capacity);
+void lsp_destroy(struct lsp *lsp);
+
+// process control functions
+int lsp_start_server(struct lsp *lsp);
+int lsp_restart_server(struct lsp *lsp);
+void lsp_stop_server(struct lsp *lsp);
+bool lsp_server_running(const struct lsp *lsp);
+uint64_t lsp_server_pid(const struct lsp *lsp);
+const char *lsp_server_name(const struct lsp *lsp);
+
+// protocol functions
+void lsp_initialize(struct lsp *lsp, struct initialize_params);
+void lsp_did_open_document(struct lsp *lsp, struct text_doc_item document);
+request_id lsp_hover(struct lsp *lsp, struct text_doc_position);
+
+#endif