Macro declare_plugin

macro_rules! declare_plugin {
    ($ty: path) => { ... };
}

This macro adds non-mangled functions which provides plugin version and loads it into the host. If plugin library should work also as static, consider calling this macro under feature condition

The functions declared by this macro are:

• get_plugin_loader_version - returns PLUGIN_LOADER_VERSION const of the crate. The PluginsManager will check if this version is compatible with the host.
• get_compatibility - returns Compatibility struct which contains all version information (Rust compiler version, features used, version of plugin’s structures). The layout of this structure is guaranteed to be stable until the PLUGIN_LOADER_VERSION is changed, so it’s safe to use it in the host after call to get_plugin_loader_version returns compatible version. Then the PluginsManager compares the returned Compatibility with it’s own and decides if it can continue loading the plugin.
• load_plugin - returns PluginVTable which is able to create plugin’s instance.