Method virtual

tools/api.py:1177–1204

(self,
                name: str,
                params: Optional[List[Parameter]] = None,
                const: Optional[bool] = None,
                **kwargs)

        return self

    def virtual(self,
                name: str,
                params: Optional[List[Parameter]] = None,
                const: Optional[bool] = None,
                **kwargs) -> 'Interface':

        # Add this parameter to the function
        this = Parameter('obj', 'void*', this=True)
        this.virtual_read = ['object_ptr.data']
        exception_msg = Parameter('exception_msg', 'char*', hidden=True)
        exception_msg.virtual_read = ['${name}.data()']
        exception_msg_size = Parameter('exception_msg_size',
                                       'size_t',
                                       hidden=True)
        exception_msg_size.virtual_read = ['exception_msg.size()']
        f = Function(name,
                     params=[this, exception_msg, exception_msg_size] +
                     (params or []),
                     virtual=True,
                     **kwargs)
        self.ifunctions.append(f)

        add_function(self.cname('set_' + name),
                     params=gparams(obj=self.opaque_type,
                                    input=self.cname(name)),
                     invoke='${{obj}}->{name} = ${{input}}'.format(
                         name=self.mname(name)))
        return self

    def generate_function(self, f: Function):
        cname = self.cname(f.name)