Function make_echo_component_with_params

tests/all/component_model.rs:207–290

(type_definition: &str, params: &[Param])

}

fn make_echo_component_with_params(type_definition: &str, params: &[Param]) -> String {
    let func = if params.len() == 0 {
        format!("(func (export \"echo\"))")
    } else if params.len() == 1 || params.len() > 16 {
        let primitive = if params.len() == 1 {
            params[0].0.primitive()
        } else {
            "i32"
        };

        format!(
            r#"
            (func (export "echo") (param {primitive}) (result {primitive})
                 local.get 0
            )"#,
        )
    } else {
        let mut param_string = String::new();
        let mut store = String::new();
        let mut size = 8;

        for (index, Param(ty, offset)) in params.iter().enumerate() {
            let primitive = ty.primitive();

            write!(&mut param_string, " {primitive}").unwrap();
            if let Some(offset) = offset {
                write!(
                    &mut store,
                    "({primitive}.{} offset={offset} (local.get $base) (local.get {index}))",
                    ty.store(),
                )
                .unwrap();

                size = size.max(offset + 8);
            }
        }

        format!(
            r#"
            (func (export "echo") (param{param_string}) (result i32)
                (local $base i32)
                (local.set $base
                    (call $realloc
                        (i32.const 0)
                        (i32.const 0)
                        (i32.const 4)
                        (i32.const {size})))
                {store}
                local.get $base
            )"#
        )
    };

    let type_section = if type_definition.contains("(type ") {
        type_definition.to_string()
    } else {
        format!("(type $Foo' {type_definition})")
    };