Crate neo_runtime 

Neo N3 Runtime facade

This crate provides a lightweight façade over the Neo runtime surface so integration tests and examples can exercise the canonical syscall catalogue without depending on a full node implementation. The implementation intentionally returns deterministic placeholder values – enough to validate wiring and type conversions while remaining self-contained for unit tests.

⚠️ Contract panic safety

In Neo N3, a runtime panic (panic!, unwrap() on None/Err, index out of bounds, arithmetic overflow) causes the VM to FAULT, which reverts the entire transaction. Unlike off-chain Rust, you cannot use panics for control flow in on-chain contracts. Always use NeoResult<T> and explicit error handling. The #[neo_contract] macro expects methods to return NeoResult<T> precisely because panics are unrecoverable on-chain.

Structs

NeoContractRuntime

Neo N3 contract management operations.

NeoCrypto

Crypto helpers for Neo N3 smart contracts.

NeoJSON

Minimal JSON helpers to support tests.

NeoRuntime

Direct wrappers for the canonical System.Runtime syscalls.

NeoRuntimeContext

Lightweight view of the runtime context.

NeoStorage

Storage convenience helpers built on top of the syscall layer.

RawKeyBuilder

Fixed-capacity stack key builder for RawStorage keys.

RawStorage

Heap-free storage facade that operates on &[u8] slices.

Enums

RawStorageGet

Outcome of RawStorage::get_into.