API: Implement vim_{get,set}_option

Some functions from upstream VIM were reintegrated for this:
- get_option_value_strict
- set_option_value_err
- set_option_value_for
- unset_global_local_option

1 files changed, 19 insertions, 0 deletions

diff --git a/src/api/helpers.h b/src/api/helpers.h
index d839fe30e7..d98ed3b22b 100644
--- a/src/api/helpers.h
+++ b/src/api/helpers.h
@@ -40,6 +40,25 @@ Object dict_get_value(dict_T *dict, String key, bool pop, Error *err);
 /// @return the old value, if any
 Object dict_set_value(dict_T *dict, String key, Object value, Error *err);
 
+/// Gets the value of a global or local(buffer, window) option.
+///
+/// @param from If `type` is `SREQ_WIN` or `SREQ_BUF`, this must be a pointer
+///        to the window or buffer.
+/// @param type One of `SREQ_GLOBAL`, `SREQ_WIN` or `SREQ_BUF`
+/// @param name The option name
+/// @param[out] err Details of an error that may have occurred
+/// @return the option value
+Object get_option_from(void *from, int type, String name, Error *err);
+
+/// Sets the value of a global or local(buffer, window) option.
+///
+/// @param to If `type` is `SREQ_WIN` or `SREQ_BUF`, this must be a pointer
+///        to the window or buffer.
+/// @param type One of `SREQ_GLOBAL`, `SREQ_WIN` or `SREQ_BUF`
+/// @param name The option name
+/// @param[out] err Details of an error that may have occurred
+void set_option_to(void *to, int type, String name, Object value, Error *err);
+
 /// Convert a vim object to an `Object` instance, recursively expanding
 /// Arrays/Dictionaries.
 ///