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24 lines
938 B
24 lines
938 B
2 years ago
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{-
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Forward fee calculation supporting different workchains
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-}
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;; See crypto/block/transaction.cpp:L1499
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int msg_fwd_fee(slice destination, cell message_body, cell init_state, int max_viewed_cells) inline {
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(int wc, _) = parse_std_addr(destination);
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throw_unless(107, (workchain == -1) | (workchain == 0) );
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int config_index = 25 + workchain;
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slice cfg = config_param(config_index).begin_parse().skip_bits(8);
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int lump_price = cfg~load_uint(64);
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int bit_price = cfg~load_uint(64);
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int cell_price = cfg~load_uint(64);
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(int cells, int bits, _) = compute_data_size(message_body, max_viewed_cells);
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cells -= 1;
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bits -= message_body.slice_bits();
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(int is_cells, int is_bits, _) = compute_data_size(init_state, max_viewed_cells);
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is_cells -= 1;
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is_bits -= init_state.slice_bits();
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return lump_price + (((bits + is_bits) * bit_price + (cells + is_cells) * cell_price + 65535) >> 16 );
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}
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