Began coding the interpreter (only manages the minimal example for now!)

1 files changed, 40 insertions, 0 deletions

diff --git a/pkg/interpreter/interpreter.go b/pkg/interpreter/interpreter.go
new file mode 100644
index 0000000..ce2499d
--- /dev/null
+++ b/pkg/interpreter/interpreter.go
@@ -0,0 +1,40 @@
+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))
+		}
+	}
+}