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package interpreter
import (
"log"
"git.adyxax.org/adyxax/gofunge/pkg/field"
"git.adyxax.org/adyxax/gofunge/pkg/pointer"
)
type Interpreter struct {
f *field.Field
p *pointer.Pointer
}
func NewInterpreter(f *field.Field, p *pointer.Pointer) *Interpreter {
return &Interpreter{f: f, p: p}
}
func (i *Interpreter) Run() {
for i.p != nil {
i.Step()
}
}
func (i *Interpreter) Step() {
var prev *pointer.Pointer = nil
for p := i.p; p != nil; p = p.Next {
c := p.Get(*i.f)
switch c {
case '@':
if prev == nil {
i.p = p.Next
} else {
prev.Next = p.Next
}
break
case '#':
p.Step(*i.f)
default:
if !p.Redirect(c) {
log.Fatalf("Non implemented instruction code %d : %c", c, c)
}
}
p.Step(*i.f)
}
}
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