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API for adding concrete syntaxes. Garbage collection to be fixed!

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This commit is contained in:
krangelov
2021-10-21 19:18:14 +02:00
parent 259ed52a77
commit 1413c273cc
15 changed files with 529 additions and 197 deletions
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17
src/runtime/c/pgf/db.cxx
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@@ -1043,6 +1043,23 @@ ref<PgfPGF> PgfDB::revision2pgf(PgfRevision revision)
return pgf;
}
PGF_INTERNAL
ref<PgfConcr> PgfDB::revision2concr(PgfConcrRevision revision)
{
if (revision <= sizeof(*current_db->ms) || revision >= current_db->ms->top)
throw pgf_error("Invalid revision");
mchunk *chunk = mem2chunk(ptr(current_db->ms,revision));
if (chunksize(chunk) < sizeof(PgfConcr))
throw pgf_error("Invalid revision");
ref<PgfConcr> concr = revision;
if (chunksize(chunk) != request2size(sizeof(PgfConcr)+concr->name.size+1))
throw pgf_error("Invalid revision");
return concr;
}
PGF_INTERNAL
bool PgfDB::is_persistant_revision(ref<PgfPGF> pgf)
{