Support class-virtual and interface-virtual methods.

[kekyo]

Support class-virtual and interface-virtual methods.

[kekyo]

• Implement vtables.
• Implement safe casts (castclass opcode) and track runtime types.

[kekyo]

• Basic vtable/vptr implemented at 037f128 (.NET Fringe Japan 2018 demonstration)
• Only class type (Not supported interface type, will implement...)

[kekyo]

First success for interface's delayed invoker. 4d6a27f

[kekyo]

TODO:

• Support castclass opcode.
• Verify valuetype's handling.
• Support reassign newslot's overrided method at existing interface type.
  • Newslot's overrided has to make new vptr space.

interface IHoge
{
    int Foo(int a, int b);
}

class HogeBase : IHoge
{
    int IHoge.Foo(int a, int b) { return a + b; }
}

class HogeDerived : HogeBase, IHoge
{
    // newslot's overrided
    int IHoge.Foo(int a, int b) { return a * b; }
}

[kekyo]

6ca7f7b

• Class virtual (vptr0) handling finished.

[kekyo]

mote tests required.

[kekyo]

857e730

Value type verified 🎉

[kekyo]

9679f54

Multiple implemented interface tested.