refactor: move some mapping-related code to a separate file (#19061)

This marks the following Vim patches as ported:

vim-patch:8.1.1785: map functionality mixed with character input

Problem:    Map functionality mixed with character input.
Solution:   Move the map functionality to a separate file. (Yegappan
            Lakshmanan, closes vim/vim#4740)  Graduate the +localmap feature.
https://github.com/vim/vim/commit/b66bab381c8ba71fd6e92327d1d34c6f8a65f2a7

vim-patch:8.2.3643: header for source file is outdated

Problem:    Header for source file is outdated.
Solution:   Make the header more accurate. (closes vim/vim#9186)
https://github.com/vim/vim/commit/a3f83feb63eae5464a620ae793c002eb45f7a838

Also cherry-pick a change for <unique> mappings from patch 8.2.0807.
Rename map_clear_mode() to do_mapclear().

1 files changed, 0 insertions, 51 deletions

diff --git a/src/nvim/eval.c b/src/nvim/eval.c
index 43d6ed558f..be2df9488e 100644
--- a/src/nvim/eval.c
+++ b/src/nvim/eval.c
@@ -6791,57 +6791,6 @@ char **tv_to_argv(typval_T *cmd_tv, const char **cmd, bool *executable)
   return argv;
 }
 
-/// Fill a dictionary with all applicable maparg() like dictionaries
-///
-/// @param dict          The dictionary to be filled
-/// @param mp            The maphash that contains the mapping information
-/// @param buffer_value  The "buffer" value
-/// @param compatible    True for compatible with old maparg() dict
-void mapblock_fill_dict(dict_T *const dict, const mapblock_T *const mp, long buffer_value,
-                        bool compatible)
-  FUNC_ATTR_NONNULL_ALL
-{
-  char *const lhs = str2special_save((const char *)mp->m_keys,
-                                     compatible, !compatible);
-  char *const mapmode = map_mode_to_chars(mp->m_mode);
-  varnumber_T noremap_value;
-
-  if (compatible) {
-    // Keep old compatible behavior
-    // This is unable to determine whether a mapping is a <script> mapping
-    noremap_value = !!mp->m_noremap;
-  } else {
-    // Distinguish between <script> mapping
-    // If it's not a <script> mapping, check if it's a noremap
-    noremap_value = mp->m_noremap == REMAP_SCRIPT ? 2 : !!mp->m_noremap;
-  }
-
-  if (mp->m_luaref != LUA_NOREF) {
-    tv_dict_add_nr(dict, S_LEN("callback"), mp->m_luaref);
-  } else {
-    if (compatible) {
-      tv_dict_add_str(dict, S_LEN("rhs"), (const char *)mp->m_orig_str);
-    } else {
-      tv_dict_add_allocated_str(dict, S_LEN("rhs"),
-                                str2special_save((const char *)mp->m_str, false,
-                                                 true));
-    }
-  }
-  if (mp->m_desc != NULL) {
-    tv_dict_add_allocated_str(dict, S_LEN("desc"), xstrdup(mp->m_desc));
-  }
-  tv_dict_add_allocated_str(dict, S_LEN("lhs"), lhs);
-  tv_dict_add_nr(dict, S_LEN("noremap"), noremap_value);
-  tv_dict_add_nr(dict, S_LEN("script"), mp->m_noremap == REMAP_SCRIPT ? 1 : 0);
-  tv_dict_add_nr(dict, S_LEN("expr"),  mp->m_expr ? 1 : 0);
-  tv_dict_add_nr(dict, S_LEN("silent"), mp->m_silent ? 1 : 0);
-  tv_dict_add_nr(dict, S_LEN("sid"), (varnumber_T)mp->m_script_ctx.sc_sid);
-  tv_dict_add_nr(dict, S_LEN("lnum"), (varnumber_T)mp->m_script_ctx.sc_lnum);
-  tv_dict_add_nr(dict, S_LEN("buffer"), (varnumber_T)buffer_value);
-  tv_dict_add_nr(dict, S_LEN("nowait"), mp->m_nowait ? 1 : 0);
-  tv_dict_add_allocated_str(dict, S_LEN("mode"), mapmode);
-}
-
 void return_register(int regname, typval_T *rettv)
 {
   char buf[2] = { (char)regname, 0 };