Function unsupported_clause_error

src/cypher/cypher.c:805–834

/* ── Unsupported keyword detection ─────────────────────────────── */

static const char *unsupported_clause_error(cbm_token_type_t type) {
    switch (type) {
    case TOK_CREATE:
        return "unsupported Cypher feature: CREATE clause (write operations not supported)";
    case TOK_DELETE:
        return "unsupported Cypher feature: DELETE clause (write operations not supported)";
    case TOK_DETACH:
        return "unsupported Cypher feature: DETACH DELETE (write operations not supported)";
    case TOK_SET:
        return "unsupported Cypher feature: SET clause (write operations not supported)";
    case TOK_REMOVE:
        return "unsupported Cypher feature: REMOVE clause (write operations not supported)";
    case TOK_MERGE:
        return "unsupported Cypher feature: MERGE clause (write operations not supported)";
    case TOK_YIELD:
        return "unsupported Cypher feature: YIELD clause";
    case TOK_CALL:
        return "unsupported Cypher feature: CALL clause (stored procedures not supported)";
    case TOK_FOREACH:
        return "unsupported Cypher feature: FOREACH clause";
    case TOK_MANDATORY:
        return "unsupported Cypher feature: MANDATORY MATCH";
    case TOK_DROP:
        return "unsupported Cypher feature: DROP (schema operations not supported)";
    case TOK_CONSTRAINT:
        return "unsupported Cypher feature: CONSTRAINT (schema operations not supported)";
    default:
        return NULL;
    }
}

/* ── Recursive descent WHERE parser (Phase 2) ──────────────────── */