40 lines
693 B
Go
40 lines
693 B
Go
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 {
|
|
switch p.Get(*i.f) {
|
|
case '@':
|
|
if prev == nil {
|
|
i.p = p.Next
|
|
} else {
|
|
prev.Next = p.Next
|
|
}
|
|
break
|
|
default:
|
|
log.Fatalf("Non implemented instruction code %d : %c", p.Get(*i.f), p.Get(*i.f))
|
|
}
|
|
}
|
|
}
|