67 lines
1.1 KiB
Go
67 lines
1.1 KiB
Go
package pointer
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
"testing"
|
|
|
|
"git.adyxax.org/adyxax/gofunge98/pkg/field"
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestMycology(t *testing.T) {
|
|
file, err := os.Open("../../mycology/mycology.b98")
|
|
if err != nil {
|
|
t.Skip("mycology test suite not found, skipping")
|
|
}
|
|
|
|
f, err := field.Load(file)
|
|
require.NoError(t, err)
|
|
p := NewPointer()
|
|
p.Argv = []string{"../../mycology/mycology.b98"}
|
|
output := ""
|
|
// TODO test expected output
|
|
p.CharacterOutput = func(c int) {
|
|
output += fmt.Sprintf("%c", c)
|
|
}
|
|
i := NewInterpreter(f, p)
|
|
|
|
v := i.Run()
|
|
require.Equal(t, 15, v)
|
|
}
|
|
|
|
type Interpreter struct {
|
|
f *field.Field
|
|
p *Pointer
|
|
}
|
|
|
|
func NewInterpreter(f *field.Field, p *Pointer) *Interpreter {
|
|
return &Interpreter{f: f, p: p}
|
|
}
|
|
|
|
func (i *Interpreter) Run() int {
|
|
for i.p != nil {
|
|
if v := i.step(); v != nil {
|
|
return *v
|
|
}
|
|
}
|
|
return 0
|
|
}
|
|
|
|
func (i *Interpreter) step() *int {
|
|
var prev *Pointer = nil
|
|
for p := i.p; p != nil; p = p.Next {
|
|
done, v := p.Exec(i.f)
|
|
if v != nil {
|
|
return v
|
|
}
|
|
if done {
|
|
if prev == nil {
|
|
i.p = p.Next
|
|
} else {
|
|
prev.Next = p.Next
|
|
}
|
|
}
|
|
}
|
|
return nil
|
|
}
|