Ton

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() op_owner(int flags, int value, slice in_msg) impure {
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    ;; Ignore bounced
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    if (flags & 1) {
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        return ();
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    }
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    ;; Check value
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    throw_unless(error::invalid_message(), value >= params::min_op());
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    ;; Parse operation
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    int op = in_msg~load_uint(32);
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    int query_id = in_msg~load_uint(64);
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    int gas_limit = in_msg~load_coins();
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    set_gas_limit(gas_limit);
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    ctx_query_id = query_id;
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    throw_unless(error::invalid_message(), ctx_query_id > 0);
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    ;; Upgrade
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    if (op == op::upgrade()) {
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        op_upgrade(value, in_msg);
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        return ();
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    }
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    ;; Upgrade
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    if (op == op::update()) {
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        op_update(value, in_msg);
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        return ();
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    }
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    ;; Add stake
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    if (op == op::stake_deposit()) {
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        op_deposit(owner_id(), value);
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        return ();
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    }
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    ;; Withdraw stake
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    if (op == op::stake_withdraw()) {
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        int stake = in_msg~load_coins();
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        in_msg.end_parse();
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        op_withdraw(owner_id(), value, stake);
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        return ();
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    }
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    ;; Recover stake
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    if (op == op::stake_recover()) {
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        load_validator_data();
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        op_stake_recover(value);
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        return ();
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    }
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    ;; Donate stake
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    if (op == op::donate()) {
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        op_donate(value);
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        return ();
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    }
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    ;; Unknown message
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    throw(error::invalid_message());
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}