neo_runtime/
contract.rs

1// Copyright (c) 2025-2026 R3E Network
2// Licensed under the MIT License
3
4use neo_types::*;
5
6/// Neo N3 contract management operations.
7///
8/// **These are test/example stubs.** In deployed contracts, the `#[neo_contract]`
9/// macro generates Wasm imports that map to NeoVM syscalls
10/// (`System.Contract.Create`, `System.Contract.Update`, `System.Contract.Call`).
11/// The methods here allow compiling and unit-testing contract code off-chain.
12///
13/// - `create()` returns a zero-filled 20-byte hash (placeholder script hash).
14/// - `update()` and `destroy()` succeed immediately with no side effects.
15/// - `call()` always returns `NeoValue::Null`.
16pub struct NeoContractRuntime;
17
18impl NeoContractRuntime {
19    /// Deploy a new contract. Returns a placeholder 20-byte script hash.
20    pub fn create(
21        script: &NeoByteString,
22        manifest: &NeoContractManifest,
23    ) -> NeoResult<NeoByteString> {
24        let _ = (script, manifest);
25        Ok(NeoByteString::new(vec![0u8; 20]))
26    }
27
28    /// Update an existing contract's script and manifest.
29    pub fn update(
30        _script_hash: &NeoByteString,
31        script: &NeoByteString,
32        manifest: &NeoContractManifest,
33    ) -> NeoResult<()> {
34        let _ = (script, manifest);
35        Ok(())
36    }
37
38    /// Destroy a contract.
39    pub fn destroy(script_hash: &NeoByteString) -> NeoResult<()> {
40        let _ = script_hash;
41        Ok(())
42    }
43
44    /// Call another contract's method. Always returns `NeoValue::Null` in stubs.
45    pub fn call(
46        script_hash: &NeoByteString,
47        method: &NeoString,
48        args: &NeoArray<NeoValue>,
49    ) -> NeoResult<NeoValue> {
50        let _ = (script_hash, method, args);
51        Ok(NeoValue::Null)
52    }
53}
neo_runtime/contract.rs

neo_runtime/
contract.rs
