1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193

#![no_std]

extern "C" {
    // #############
    // # Registers #
    // #############
    pub fn read_register(register_id: u64, ptr: u64);
    pub fn register_len(register_id: u64) -> u64;
    pub fn write_register(register_id: u64, data_len: u64, data_ptr: u64);
    // ###############
    // # Context API #
    // ###############
    pub fn current_account_id(register_id: u64);
    pub fn signer_account_id(register_id: u64);
    pub fn signer_account_pk(register_id: u64);
    pub fn predecessor_account_id(register_id: u64);
    pub fn input(register_id: u64);
    pub fn block_index() -> u64;
    pub fn block_timestamp() -> u64;
    pub fn epoch_height() -> u64;
    pub fn storage_usage() -> u64;
    // #################
    // # Economics API #
    // #################
    pub fn account_balance(balance_ptr: u64);
    pub fn account_locked_balance(balance_ptr: u64);
    pub fn attached_deposit(balance_ptr: u64);
    pub fn prepaid_gas() -> u64;
    pub fn used_gas() -> u64;
    // ############
    // # Math API #
    // ############
    pub fn random_seed(register_id: u64);
    pub fn sha256(value_len: u64, value_ptr: u64, register_id: u64);
    pub fn keccak256(value_len: u64, value_ptr: u64, register_id: u64);
    pub fn keccak512(value_len: u64, value_ptr: u64, register_id: u64);
    pub fn ripemd160(value_len: u64, value_ptr: u64, register_id: u64);
    pub fn ecrecover(
        hash_len: u64,
        hash_ptr: u64,
        sig_len: u64,
        sig_ptr: u64,
        v: u64,
        malleability_flag: u64,
        register_id: u64,
    ) -> u64;
    pub fn ed25519_verify(
        sig_len: u64,
        sig_ptr: u64,
        msg_len: u64,
        msg_ptr: u64,
        pub_key_len: u64,
        pub_key_ptr: u64,
    ) -> u64;
    // #####################
    // # Miscellaneous API #
    // #####################
    pub fn value_return(value_len: u64, value_ptr: u64);
    pub fn panic() -> !;
    pub fn panic_utf8(len: u64, ptr: u64) -> !;
    pub fn log_utf8(len: u64, ptr: u64);
    pub fn log_utf16(len: u64, ptr: u64);
    pub fn abort(msg_ptr: u32, filename_ptr: u32, line: u32, col: u32) -> !;
    // ################
    // # Promises API #
    // ################
    pub fn promise_create(
        account_id_len: u64,
        account_id_ptr: u64,
        function_name_len: u64,
        function_name_ptr: u64,
        arguments_len: u64,
        arguments_ptr: u64,
        amount_ptr: u64,
        gas: u64,
    ) -> u64;
    pub fn promise_then(
        promise_index: u64,
        account_id_len: u64,
        account_id_ptr: u64,
        function_name_len: u64,
        function_name_ptr: u64,
        arguments_len: u64,
        arguments_ptr: u64,
        amount_ptr: u64,
        gas: u64,
    ) -> u64;
    pub fn promise_and(promise_idx_ptr: u64, promise_idx_count: u64) -> u64;
    pub fn promise_batch_create(account_id_len: u64, account_id_ptr: u64) -> u64;
    pub fn promise_batch_then(promise_index: u64, account_id_len: u64, account_id_ptr: u64) -> u64;
    // #######################
    // # Promise API actions #
    // #######################
    pub fn promise_batch_action_create_account(promise_index: u64);
    pub fn promise_batch_action_deploy_contract(promise_index: u64, code_len: u64, code_ptr: u64);
    pub fn promise_batch_action_function_call(
        promise_index: u64,
        function_name_len: u64,
        function_name_ptr: u64,
        arguments_len: u64,
        arguments_ptr: u64,
        amount_ptr: u64,
        gas: u64,
    );
    pub fn promise_batch_action_function_call_weight(
        promise_index: u64,
        function_name_len: u64,
        function_name_ptr: u64,
        arguments_len: u64,
        arguments_ptr: u64,
        amount_ptr: u64,
        gas: u64,
        weight: u64,
    );
    pub fn promise_batch_action_transfer(promise_index: u64, amount_ptr: u64);
    pub fn promise_batch_action_stake(
        promise_index: u64,
        amount_ptr: u64,
        public_key_len: u64,
        public_key_ptr: u64,
    );
    pub fn promise_batch_action_add_key_with_full_access(
        promise_index: u64,
        public_key_len: u64,
        public_key_ptr: u64,
        nonce: u64,
    );
    pub fn promise_batch_action_add_key_with_function_call(
        promise_index: u64,
        public_key_len: u64,
        public_key_ptr: u64,
        nonce: u64,
        allowance_ptr: u64,
        receiver_id_len: u64,
        receiver_id_ptr: u64,
        function_names_len: u64,
        function_names_ptr: u64,
    );
    pub fn promise_batch_action_delete_key(
        promise_index: u64,
        public_key_len: u64,
        public_key_ptr: u64,
    );
    pub fn promise_batch_action_delete_account(
        promise_index: u64,
        beneficiary_id_len: u64,
        beneficiary_id_ptr: u64,
    );
    // #######################
    // # Promise API results #
    // #######################
    pub fn promise_results_count() -> u64;
    pub fn promise_result(result_idx: u64, register_id: u64) -> u64;
    pub fn promise_return(promise_id: u64);
    // ###############
    // # Storage API #
    // ###############
    pub fn storage_write(
        key_len: u64,
        key_ptr: u64,
        value_len: u64,
        value_ptr: u64,
        register_id: u64,
    ) -> u64;
    pub fn storage_read(key_len: u64, key_ptr: u64, register_id: u64) -> u64;
    pub fn storage_remove(key_len: u64, key_ptr: u64, register_id: u64) -> u64;
    pub fn storage_has_key(key_len: u64, key_ptr: u64) -> u64;
    pub fn storage_iter_prefix(prefix_len: u64, prefix_ptr: u64) -> u64;
    pub fn storage_iter_range(start_len: u64, start_ptr: u64, end_len: u64, end_ptr: u64) -> u64;
    pub fn storage_iter_next(iterator_id: u64, key_register_id: u64, value_register_id: u64)
        -> u64;
    // ###############
    // # Validator API #
    // ###############
    pub fn validator_stake(account_id_len: u64, account_id_ptr: u64, stake_ptr: u64);
    pub fn validator_total_stake(stake_ptr: u64);
    // #############
    // # Alt BN128 #
    // #############
    pub fn alt_bn128_g1_multiexp(value_len: u64, value_ptr: u64, register_id: u64);
    pub fn alt_bn128_g1_sum(value_len: u64, value_ptr: u64, register_id: u64);
    pub fn alt_bn128_pairing_check(value_len: u64, value_ptr: u64) -> u64;
}

/// Alias for [`block_index`] function. Returns the height of the current block.
///
/// # Safety
///
/// This function relies on the external implementation of [`block_index`].
#[inline]
pub unsafe fn block_height() -> u64 {
    block_index()
}