39 lines
745 B
Go
39 lines
745 B
Go
package builtins
|
|
|
|
import (
|
|
"monkey/internal/context"
|
|
"monkey/internal/object"
|
|
"monkey/internal/typing"
|
|
"syscall"
|
|
)
|
|
|
|
// Seek ...
|
|
func Seek(ctx context.Context, args ...object.Object) object.Object {
|
|
if err := typing.Check(
|
|
"seek", args,
|
|
typing.RangeOfArgs(1, 3),
|
|
typing.WithTypes(object.IntegerType, object.IntegerType, object.IntegerType),
|
|
); err != nil {
|
|
return newError(err.Error())
|
|
}
|
|
|
|
var (
|
|
fd int
|
|
whence = 0
|
|
)
|
|
|
|
fd = int(args[0].(object.Integer).Value)
|
|
offset := args[1].(object.Integer).Value
|
|
|
|
if len(args) == 3 {
|
|
whence = int(args[2].(object.Integer).Value)
|
|
}
|
|
|
|
offset, err := syscall.Seek(fd, offset, whence)
|
|
if err != nil {
|
|
return newError("IOError: %s", err)
|
|
}
|
|
|
|
return object.Integer{Value: offset}
|
|
}
|