In Rust, the lib.rs file plays a significant role in defining the behavior and public API of a Rust library crate.
When I was doing fuzz tests for acond using cargo fuzz, I needed to add lib.rs manually to reuse the codes.
Defining Library Modules: lib.rs is typically the entry point for defining the modules and code that make up your library. It acts as the root module of your crate. You organize your code into modules and submodules within this file.
Public API Definition: It defines the public API of your library by marking modules, functions, and types as pub (public). Anything marked as pub in lib.rs is accessible to external code that depends on your library.
Re-Exporting: You can re-export items (functions, types, modules) from other modules within your crate or even from external dependencies. This allows you to present a clean and coherent public API.
Dependencies and Imports: You declare your external dependencies and import them in lib.rs. This makes it clear what your library depends on and which external symbols are used within your library.
Entry Point for Tests and Examples: If you include tests and examples within your library crate (typically in the same directory as lib.rs), this file is often used as the entry point for running tests and examples associated with the library.
In Rust, the
lib.rsfile plays a significant role in defining the behavior and public API of a Rust library crate. When I was doing fuzz tests foracondusing cargo fuzz, I needed to addlib.rsmanually to reuse the codes.Defining Library Modules:
lib.rsis typically the entry point for defining the modules and code that make up your library. It acts as the root module of your crate. You organize your code into modules and submodules within this file.Public API Definition: It defines the public API of your library by marking modules, functions, and types as pub (public). Anything marked as pub in
lib.rsis accessible to external code that depends on your library.Re-Exporting: You can re-export items (functions, types, modules) from other modules within your crate or even from external dependencies. This allows you to present a clean and coherent public API.
Dependencies and Imports: You declare your external dependencies and import them in
lib.rs. This makes it clear what your library depends on and which external symbols are used within your library.Entry Point for Tests and Examples: If you include tests and examples within your library crate (typically in the same directory as
lib.rs), this file is often used as the entry point for running tests and examples associated with the library.