gofunge98/pkg/pointer/exec.go

39 lines
650 B
Go

package pointer
import (
"log"
"git.adyxax.org/adyxax/gofunge/pkg/field"
)
func (p *Pointer) Exec(f *field.Field) (done bool, returnValue *int) {
c := p.Get(*f)
for jumpingMode := false; jumpingMode || c == ' ' || c == ';'; c = p.StepAndGet(*f) {
if jumpingMode {
if c == ';' {
jumpingMode = false
}
continue
}
}
switch c {
case '@':
return true, nil
case '#':
p.Step(*f)
case 'j':
n := p.Ss.Pop()
for j := 0; j < n; j++ {
p.Step(*f)
}
case 'q':
v := p.Ss.Pop()
return true, &v
default:
if !p.Redirect(c) {
log.Fatalf("Non implemented instruction code %d : %c", c, c)
}
}
p.Step(*f)
return
}