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added an API for cloning expressions/types/literals

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krangelov
2020-08-14 20:54:15 +02:00
parent 830dbe760d
commit 23edeec5a9
6 changed files with 179 additions and 74 deletions
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33
src/runtime/java/jpgf.c
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@@ -486,39 +486,8 @@ jpgf_literal_callback_match(PgfLiteralCallback* self, PgfConcr* concr,
PgfExprProb* ep = gu_new(PgfExprProb, out_pool);
ep->expr = gu_variant_from_ptr(get_ref(env, jexpr));
ep->expr = pgf_clone_expr(ep->expr, out_pool);
ep->prob = prob;
{
// This is an uggly hack. We first show the expression ep->expr
// and then we read it back but in out_pool. The whole purpose
// of this is to copy the expression from the temporary pool
// that was created in the Java binding to the parser pool.
// There should be a real copying function or even better
// there must be a way to avoid copying at all.
GuPool* tmp_pool = gu_local_pool();
GuExn* err = gu_exn(tmp_pool);
GuStringBuf* sbuf = gu_new_string_buf(tmp_pool);
GuOut* out = gu_string_buf_out(sbuf);
pgf_print_expr(ep->expr, NULL, 0, out, err);
GuString str = gu_string_buf_data(sbuf);
size_t len = gu_string_buf_length(sbuf);
GuIn* in = gu_data_in((uint8_t*) str, len, tmp_pool);
ep->expr = pgf_read_expr(in, out_pool, tmp_pool, err);
if (!gu_ok(err) || gu_variant_is_null(ep->expr)) {
throw_string_exception(env, "org/grammaticalframework/pgf/PGFError", "The expression cannot be parsed");
gu_pool_free(tmp_pool);
return NULL;
}
gu_pool_free(tmp_pool);
}
return ep;
}