Struct FreightProxy

pub struct FreightProxy {
    pub freight: Box<dyn Freight>,
    pub lib: Rc<Library>,
    pub name: &'static str,
    pub version: &'static str,
}

A structure, that contains a Freight object and is used to import and use it safely

This structure is a Freight trait implementor and FreightRegistrar trait implementor. It provides FreightProxy::load function that is used to build the FreightProxy from a library path

To learn more about the functions you may call on the FreightProxy, see Freight trait documentation

Example

let mut my_f_proxy: FreightProxy = unsafe{
    FreightProxy::load("/bin/libtest_plug.so").expect("fail")
};
println!("{}, {}", my_f_proxy.name, my_f_proxy.version);
let fnlist: Vec<Function> = my_f_proxy.get_function_list();
for func in fnlist {
    println!("{}, {}", func.name, func.number);
}

Fields

freight: Box<dyn Freight>

Imported freight, solely for internal purposes

lib: Rc<Library>

Lib this freight was imported from to make sure this structure does not outlive the library it was imported from

name: &'static str

Imported freights name as a static string

version: &'static str

Imported freights version as a static string

Implementations

impl FreightProxy

Functions, needed to configure FreightProxy structure initially

pub unsafe fn load(lib_path: &str) -> Result<FreightProxy, RuntimeError>

Function, used to build a FreightProxy object from a library path

Trait Implementations

impl Freight for FreightProxy

fn call_function( &mut self, function_number: u64, args: Vec<&mut Box<dyn Any>>, ) -> Result<Box<dyn Any>, RuntimeError>

Function that is used to call proxy the calls from the outside of a plugin to the internal functions and must implement function calling, by its number arguments, contained inside of Vec<Box<dyn Any>> and must return either a Box<dyn Any> representing the returned value or a RuntimeError

fn init( &mut self, limitations: &Option<Vec<Limitation>>, ) -> Vec<InterplugRequest>

Function that is ran when importing the plugin, which may be reimplememented in a plugin if it needs to set up some things before doing any other actions

fn update_limitations(&mut self, limitations: &Vec<Limitation>)

Function that updates system limitations

fn interplug_provide( &mut self, request: InterplugRequest, freight_proxy: Rc<FreightProxy>, )

Function that replies to the interplugin request by providing the requested plugin

fn interplug_deny(&mut self, request: InterplugRequest)

Function that replies to the interplugin request by by informing it that the request was denied

fn get_function_list(&mut self) -> Vec<Function>

Function that is used to provide information about internal functions of a plugin to the program using it, so it can choose the function it needs either by its name, argument types, return type or all of the above

fn get_type_list(&mut self) -> Vec<Type>

Function that is used to provide information about non standard types, a function from this plugin might take as an argument or return, so that the program using the plugin can take such non-standard objects from one function implemented in this plugin and pass it on into another function in this plugin

fn get_operator_list(&mut self) -> Vec<Function>

Function that is used to provide information about internal functions of a plugin that are named after binary operators and should be treated as such. These functions have to always get exactly two arguments and they are called by the same function that calls any function Freight::call_function

impl FreightRegistrar for FreightProxy

fn register_freight(&mut self, freight: Box<dyn Freight>)

Function that gets a Freight implementor passed as an argument and is used to use it wherever it is needed in the FreightRegistrar implementor