read_bag

To run this example:

cargo run --example read_bag

To regenerate sample bags, run:

./examples/read_bag/scripts/generate_fixtures.sh

Make sure you have the std_msgs (git submodule in the root of the project) checked out:

git submodule update --init

Code-generation is done through the build.rs and added to the project via the include! statement in main.rs.

The generation recursively scans every .msg file in the supplied std_msgs and dummy_msgs directories and create Rust structs for them, which will be used by the serde_rosmsg crate for deserialization.

It looks something like:

/// This file is autogenerated. Do not edit by hand!
pub mod msgs {
    pub mod dummy_msgs {
        #[derive(Clone, Debug, serde::Deserialize, PartialEq)]
        pub struct Dummy {
            pub r#data: Vec<u8>,
        }
        impl Dummy {
            pub const r#PI: f32 = 3.1415927;
            pub const r#N_PI: f32 = -3.1415927;
            pub const r#HELLO: &'static str = &"WORLD";
        }
        impl frost::msgs::Msg for Dummy {}
    }
    pub mod std_msgs {
        #[derive(Clone, Debug, serde::Deserialize, PartialEq)]
        pub struct Bool {
            pub r#data: bool,
        }
        impl Bool {}
        impl frost::msgs::Msg for Bool {}
        #[derive(Clone, Debug, serde::Deserialize, PartialEq)]
        pub struct Byte {
            pub r#data: u8,
        }
        impl Byte {}
        impl frost::msgs::Msg for Byte {}
        //... more 
    }
}