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feat: add Supertype API

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Introduces a new function that takes in a supertype symbol and returns
all associated subtypes. Can be used by query.c to give better errors
for invalid subtypes, as well as downstream applications like the query
LSP to give better diagnostics.
This commit is contained in:
Riley Bruins 2024-11-12 11:43:00 -08:00 • committed by Amaan Qureshi
parent 07c08432ca
commit 19482834bd
11 changed files with 459 additions and 78 deletions
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25
lib/src/language.c
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@ -24,6 +24,31 @@ uint32_t ts_language_state_count(const TSLanguage *self) {
return self->state_count;
}
const TSSymbol *ts_language_supertypes(const TSLanguage *self, uint32_t *length) {
if (self->version >= LANGUAGE_VERSION_WITH_RESERVED_WORDS) {
*length = self->supertype_count;
return self->supertype_symbols;
} else {
*length = 0;
return NULL;
}
}
const TSSymbol *ts_language_subtypes(
const TSLanguage *self,
TSSymbol supertype,
uint32_t *length
) {
if (self->version < LANGUAGE_VERSION_WITH_RESERVED_WORDS || !ts_language_symbol_metadata(self, supertype).supertype) {
*length = 0;
return NULL;
}
TSMapSlice slice = self->supertype_map_slices[supertype];
*length = slice.length;
return &self->supertype_map_entries[slice.index];
}
uint32_t ts_language_version(const TSLanguage *self) {
return self->version;
}