safe-rust

safe-rust is a lightweight Rust crate designed to make your code safe.

Rust is already safe, but sometimes that’s not enough.

In situations where safety is critical, explicit, and non-negotiable, safe-rust allows you to clearly communicate that intent.

Features

• Ensures expressions are safe
• Zero-cost abstraction
• No unsafe code
• Minimal API surface
• Explicit safety semantics

Installation

[dependencies]
safe-rust = "0.1"

Usage

use safe_rust::safe;

fn main() {
    // Guarantees that 2 + 2 is performed within safe boundaries
    let result = safe!(2 + 2);
    println!("{result}");
}

Recommendations

Safety

This crate contains no unsafe code.

All expressions passed to safe! are evaluated safely, as intended by the Rust language and its guarantees.

• If an expression is unsafe, it should not compile.

• If it compiles, it is safe.

Performance

There is no measurable performance impact. The macro expands directly to the enclosed expression, introducing no additional:

• Instructions

• Allocations

• Runtime checks

Decision Matrix

When should I use this?

• When you want to explicitly mark code as safe.

• When safety is a concern.

• When clarity matters.

• When reviewing critical code paths.

• When you want to be absolutely sure.

When should I not use this?

• When safety is implied.

• When ambiguity is acceptable.

• When you are comfortable assuming safety.