1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162

extern crate libloading;

// TODO : manage the errors

use libloading::{Library};
use allocator::{Allocator, HeapIPSender, HeapIPReceiver, HeapSenders};

use std::fmt;

pub struct ComponentBuilder {
    lib: Library,
    new: fn(&String, &Allocator, *mut HeapSenders) -> *mut u8,
    connect: fn(*mut u8, &String, *const HeapIPSender) -> u32,
    connect_array: fn(*mut u8, &String, &String, *const HeapIPSender) -> u32,
    add_output_selection: fn(*mut u8, &String, &String) -> u32,
    add_input_selection: fn(*mut u8, &String, &String) -> *const HeapIPSender,
    add_input_receiver: fn(*mut u8, &String, &String, *const HeapIPReceiver),
    disconnect: fn(*mut u8, &String) -> u32,
    disconnect_array: fn(*mut u8, &String, &String) -> u32,
    is_input_ports: fn(*mut u8) -> bool,
    run: fn(*mut u8),
    destroy: fn(*mut u8),
}

impl ComponentBuilder {
    pub fn new(path: &'static str) -> Self {
        let comp = libloading::Library::new(path).expect("cannot load");

        let new = unsafe {
            *(comp.get(b"create_component\0").expect("cannot find create method"))
        };
        let run = unsafe {
            *(comp.get(b"run\0").expect("cannot find run method"))
        };
        let connect = unsafe {
            *(comp.get(b"connect\0").expect("cannot find connect method"))
        };
        let connect_array = unsafe {
            *(comp.get(b"connect_array\0").expect("cannot find connect_array method"))
        };
        let add_output_selection = unsafe {
            *(comp.get(b"add_output_selection\0").expect("cannot find add_output_selection method"))
        };
        let add_input_selection = unsafe {
            *(comp.get(b"add_input_selection\0").expect("cannot find add_input_selection method"))
        };
        let add_input_receiver = unsafe {
            *(comp.get(b"add_input_receiver\0").expect("cannot find add_input_receiver method"))
        };
        let disconnect = unsafe {
            *(comp.get(b"disconnect\0").expect("cannot find disconnect method"))
        };
        let disconnect_array = unsafe {
            *(comp.get(b"disconnect_array\0").expect("cannot find disconnect_array method"))
        };
        let is_input_ports = unsafe {
            *(comp.get(b"is_input_ports\0").expect("cannot find is_input_ports method"))
        };
        let destroy = unsafe {
            *(comp.get(b"destroy_component\0").expect("cannot find destroy method"))
        };

        ComponentBuilder {
            lib: comp,
            new: new,
            connect: connect,
            connect_array: connect_array,
            add_output_selection: add_output_selection,
            add_input_selection: add_input_selection,
            add_input_receiver: add_input_receiver,
            disconnect: disconnect,
            disconnect_array: disconnect_array,
            is_input_ports: is_input_ports,
            run: run,
            destroy: destroy,
        }
    }

    pub fn build(&self, name: &String, allocator: &Allocator, senders: *mut HeapSenders) -> Component {
        let c = (self.new)(name, allocator, senders);
        Component {
            ptr: c,
            connect: self.connect,
            connect_array: self.connect_array,
            add_output_selection: self.add_output_selection,
            add_input_selection: self.add_input_selection,
            add_input_receiver: self.add_input_receiver,
            disconnect: self.disconnect,
            disconnect_array: self.disconnect_array,
            is_input_ports: self.is_input_ports,
            run: self.run,
            destroy: self.destroy,
        }
    }
}

impl fmt::Debug for ComponentBuilder {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "ComponentBuilder")
    }
}

pub struct Component {
    ptr: *mut u8,
    add_output_selection: fn(*mut u8, &String, &String) -> u32,
    add_input_selection: fn(*mut u8, &String, &String) -> *const HeapIPSender,
    add_input_receiver: fn(*mut u8, &String, &String, *const HeapIPReceiver),
    connect: fn(*mut u8, &String, *const HeapIPSender) -> u32,
    connect_array: fn(*mut u8, &String, &String, *const HeapIPSender) -> u32,
    disconnect: fn(*mut u8, &String) -> u32,
    disconnect_array: fn(*mut u8, &String, &String) -> u32,
    is_input_ports: fn(*mut u8) -> bool,
    run: fn(*mut u8),
    destroy: fn(*mut u8),
}

impl Component {
    pub fn run(&self) {
        (self.run)(self.ptr);
    }

    pub fn connect(&self, port_out: &String, sender: *const HeapIPSender){
        (self.connect)(self.ptr, port_out, sender);
    }

    pub fn connect_array(&self, port_out: &String, selection_out: &String, sender: *const HeapIPSender){
        (self.connect_array)(self.ptr, port_out, selection_out, sender);
    }

    pub fn add_output_selection(&self, port_out: &String, selection_out: &String){
        (self.add_output_selection)(self.ptr, port_out, selection_out);
    }

    pub fn add_input_selection(&self, port_in: &String, selection_in: &String) -> *const HeapIPSender{
        (self.add_input_selection)(self.ptr, port_in, selection_in)
    }

    pub fn add_input_receiver(&self, port_in: &String, selection_in: &String, recv: *const HeapIPReceiver) {
        (self.add_input_receiver)(self.ptr, port_in, selection_in, recv);
    }

    pub fn disconnect(&self, port: &String){
        (self.disconnect)(self.ptr, port);
    }

    pub fn disconnect_array(&self, port: &String, selection: &String){
        (self.disconnect_array)(self.ptr, port, selection);
    }

    pub fn is_input_ports(&self) -> bool{
        (self.is_input_ports)(self.ptr)
    }

}

unsafe impl Send for Component {}

impl Drop for Component {
    fn drop(&mut self) {
        (self.destroy)(self.ptr);
    }
}