32 lines
638 B
Go
32 lines
638 B
Go
package builtins
|
|
|
|
import "monkey/object"
|
|
|
|
import (
|
|
"fmt"
|
|
"os"
|
|
)
|
|
|
|
// Assert ...
|
|
func Assert(args ...object.Object) object.Object {
|
|
if len(args) != 2 {
|
|
return newError("wrong number of arguments. got=%d, want=2",
|
|
len(args))
|
|
}
|
|
if args[0].Type() != object.BOOLEAN_OBJ {
|
|
return newError("argument #1 to `assert` must be BOOLEAN, got %s",
|
|
args[0].Type())
|
|
}
|
|
if args[1].Type() != object.STRING_OBJ {
|
|
return newError("argument #2 to `assert` must be STRING, got %s",
|
|
args[0].Type())
|
|
}
|
|
|
|
if !args[0].(*object.Boolean).Value {
|
|
fmt.Printf("Assertion Error: %s", args[1].(*object.String).Value)
|
|
os.Exit(1)
|
|
}
|
|
|
|
return nil
|
|
}
|