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api/buffer: add "on_bytes" callback to nvim_buf_attach

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This implements byte-resolution updates of buffer changes.
Note: there is no promise that the buffer state is valid inside
the callback!
This commit is contained in:
Björn Linse
2020-02-29 15:27:17 +01:00
parent 81fa107f59
commit bc86f76c0a
13 changed files with 280 additions and 125 deletions
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4
src/nvim/api/buffer.c
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@@ -175,8 +175,7 @@ Boolean nvim_buf_attach(uint64_t channel_id,
}
cb.on_lines = v->data.luaref;
v->data.luaref = LUA_NOREF;
} else if (is_lua && strequal("_on_bytes", k.data)) {
// NB: undocumented, untested and incomplete interface!
} else if (is_lua && strequal("on_bytes", k.data)) {
if (v->type != kObjectTypeLuaRef) {
api_set_error(err, kErrorTypeValidation, "callback is not a function");
goto error;
@@ -1796,6 +1795,7 @@ Dictionary nvim__buf_stats(Buffer buffer, Error *err)
// NB: this should be zero at any time API functions are called,
// this exists to debug issues
PUT(rv, "dirty_bytes", INTEGER_OBJ((Integer)buf->deleted_bytes));
PUT(rv, "dirty_bytes2", INTEGER_OBJ((Integer)buf->deleted_bytes2));
u_header_T *uhp = NULL;
if (buf->b_u_curhead != NULL) {