Attribute Macro plugin_entry 

#[plugin_entry]

Mark a function as an Ecsact codegen plugin entry point. Two C functions will be created for you that are required for an Ecsact plugin. One will contain the function you marked as the entry point and be given a “context” object of type ecsact::CodegenPluginContext.

Using the ecsact_dylib_runtime crate your entry point will have access to the Ecsact Meta module for the current ecsact file it is processing.

Example

This rust function can use ctx to write to a .txt file based on the ecsact file.

#[ecsact_codegen::plugin_entry("txt")]
fn my_plugin(ctx: &mut ecsact::CodegenPluginContext) {
    let pkg_name = ecsact::meta::package_name(ctx.package_id());
    writeln!(ctx, "{pkg_name}").unwrap()
}

If the ecsact file had a package statement of hello:

package hello;

The text output file would contain a single line with the packag name.

hello