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feat(api): add nvim_get_hl (#22693)

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Problem: no way of getting all highlight group definitions in a namespace.

Solution: add `nvim_get_hl()`, deprecate `nvim_get_hl_by_name()` and `nvim_get_hl_by_id()`.
This commit is contained in:
Null Chilly
2023-03-23 16:31:39 +07:00
committed by GitHub
parent ea0b66d208
commit c0fe6c040e
10 changed files with 385 additions and 91 deletions
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68
src/nvim/highlight_group.c
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@@ -12,6 +12,7 @@
#include "nvim/api/private/defs.h"
#include "nvim/api/private/helpers.h"
#include "nvim/api/private/validate.h"
#include "nvim/ascii.h"
#include "nvim/autocmd.h"
#include "nvim/buffer_defs.h"
@@ -1521,24 +1522,71 @@ static void highlight_list_one(const int id)
}
}
Dictionary get_global_hl_defs(Arena *arena)
static bool hlgroup2dict(Dictionary *hl, NS ns_id, int hl_id, Arena *arena)
{
HlGroup *sgp = &hl_table[hl_id - 1];
int link = ns_id == 0 ? sgp->sg_link : ns_get_hl(&ns_id, hl_id, true, sgp->sg_set);
if (link == -1) {
return false;
}
HlAttrs attr =
syn_attr2entry(ns_id == 0 ? sgp->sg_attr : ns_get_hl(&ns_id, hl_id, false, sgp->sg_set));
if (link > 0) {
*hl = arena_dict(arena, 1);
PUT_C(*hl, "link", STRING_OBJ(cstr_as_string(hl_table[link - 1].sg_name)));
} else {
*hl = arena_dict(arena, HLATTRS_DICT_SIZE);
hlattrs2dict(hl, attr, true, true);
hlattrs2dict(hl, attr, false, true);
}
return true;
}
Dictionary ns_get_hl_defs(NS ns_id, Dict(get_highlight) *opts, Arena *arena, Error *err)
{
Boolean link = api_object_to_bool(opts->link, "link", true, err);
int id = -1;
if (opts->name.type != kObjectTypeNil) {
VALIDATE_T("highlight name", kObjectTypeString, opts->name.type, {
goto cleanup;
});
String name = opts->name.data.string;
id = syn_check_group(name.data, name.size);
} else if (opts->id.type != kObjectTypeNil) {
VALIDATE_T("highlight id", kObjectTypeInteger, opts->id.type, {
goto cleanup;
});
id = (int)opts->id.data.integer;
}
if (id != -1) {
VALIDATE(1 <= id && id <= highlight_ga.ga_len, "%s", "Highlight id out of bounds", {
goto cleanup;
});
Dictionary attrs = ARRAY_DICT_INIT;
hlgroup2dict(&attrs, ns_id, link ? id : syn_get_final_id(id), arena);
return attrs;
}
if (ERROR_SET(err)) {
goto cleanup;
}
Dictionary rv = arena_dict(arena, (size_t)highlight_ga.ga_len);
for (int i = 1; i <= highlight_ga.ga_len; i++) {
Dictionary attrs = ARRAY_DICT_INIT;
HlGroup *h = &hl_table[i - 1];
if (h->sg_attr > 0) {
attrs = arena_dict(arena, HLATTRS_DICT_SIZE);
hlattrs2dict(&attrs, syn_attr2entry(h->sg_attr), true);
} else if (h->sg_link > 0) {
attrs = arena_dict(arena, 1);
char *link = hl_table[h->sg_link - 1].sg_name;
PUT_C(attrs, "link", STRING_OBJ(cstr_as_string(link)));
if (!hlgroup2dict(&attrs, ns_id, i, arena)) {
continue;
}
PUT_C(rv, h->sg_name, DICTIONARY_OBJ(attrs));
PUT_C(rv, hl_table[(link ? i : syn_get_final_id(i)) - 1].sg_name, DICTIONARY_OBJ(attrs));
}
return rv;
cleanup:
api_free_integer(id);
api_free_boolean(link);
Dictionary empty = ARRAY_DICT_INIT;
return empty;
}
/// Outputs a highlight when doing ":hi MyHighlight"