Gopher2600/debugger/eventhandler.go

49 lines
1.4 KiB
Go

// This file is part of Gopher2600.
//
// Gopher2600 is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Gopher2600 is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Gopher2600. If not, see <https://www.gnu.org/licenses/>.
package debugger
// readEventsHandler is called by inputLoop to make sure the program is
// handling pushed events and/or user input.
//
// used alongside TermReadCheck() it means the inputLoop can react without
// having to enter the TermRead() function. The TermRead() function is only
// used when the emulation is halted.
//
// used in both playmode and debugging mode
func (dbg *Debugger) readEventsHandler() error {
for {
select {
case sig := <-dbg.events.Signal:
return dbg.events.SignalHandler(sig)
case ev := <-dbg.events.UserInput:
err := dbg.events.UserInputHandler(ev)
if err != nil {
return err
}
case ev := <-dbg.events.PushedFunction:
ev()
case ev := <-dbg.events.PushedFunctionImmediate:
ev()
return nil
default:
return nil
}
}
}