27 lines
520 B
Go
27 lines
520 B
Go
package builtins
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"monkey/object"
|
|
"monkey/typing"
|
|
)
|
|
|
|
// Read ...
|
|
func Read(args ...object.Object) object.Object {
|
|
if err := typing.Check(
|
|
"read", args,
|
|
typing.ExactArgs(1),
|
|
typing.WithTypes(object.STRING_OBJ),
|
|
); err != nil {
|
|
return newError(err.Error())
|
|
}
|
|
|
|
filename := args[0].(*object.String).Value
|
|
data, err := ioutil.ReadFile(filename)
|
|
if err != nil {
|
|
return newError("IOError: error reading from file %s: %s", filename, err)
|
|
}
|
|
|
|
return &object.String{Value: string(data)}
|
|
}
|