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package main
type PrintValueCommand struct {}
func (cmd PrintValueCommand) exec(state *ProgramState) {
state.out <- state.space
}
type ToggleTerminalCommand struct {}
func (cmd ToggleTerminalCommand) exec(state *ProgramState) {
terminal, isTerminal := state.space.value.(TerminalValue)
if !isTerminal {
return
}
switch terminal {
case ArrayBegin:
state.space.value = MapBegin
case ArrayEnd:
state.space.value = MapEnd
case MapBegin:
state.space.value = ArrayBegin
case MapEnd:
state.space.value = ArrayEnd
}
}
type FilteredCommand struct {
filter Filter
command Command
}
func (cmd FilteredCommand) exec(state *ProgramState) {
if cmd.filter.exec(state) {
cmd.command.exec(state)
}
}
type Command interface {
exec(*ProgramState)
}
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