dip
This commit is contained in:
parent
9c381f0e8f
commit
ed8f8f9edf
|
|
@ -35,6 +35,7 @@ joy_eval : String -> JList -> JList -> Result String (JList, JList)
|
||||||
joy_eval symbol stack expression =
|
joy_eval symbol stack expression =
|
||||||
case symbol of
|
case symbol of
|
||||||
"i" -> joy_i stack expression
|
"i" -> joy_i stack expression
|
||||||
|
"dip" -> joy_dip stack expression
|
||||||
"+" -> joy_binary_math_op (+) stack expression
|
"+" -> joy_binary_math_op (+) stack expression
|
||||||
"-" -> joy_binary_math_op (-) stack expression
|
"-" -> joy_binary_math_op (-) stack expression
|
||||||
"*" -> joy_binary_math_op (*) stack expression
|
"*" -> joy_binary_math_op (*) stack expression
|
||||||
|
|
@ -63,6 +64,15 @@ joy_i stack expression =
|
||||||
Ok (a, s0) -> Ok (s0, a ++ expression)
|
Ok (a, s0) -> Ok (s0, a ++ expression)
|
||||||
Err msg -> Err msg
|
Err msg -> Err msg
|
||||||
|
|
||||||
|
joy_dip : JList -> JList -> Result String (JList, JList)
|
||||||
|
joy_dip stack expression =
|
||||||
|
case pop_list(stack) of
|
||||||
|
Ok (quoted_expression, s0) ->
|
||||||
|
case pop_any(s0) of
|
||||||
|
Ok (x, s1) -> Ok (s1, quoted_expression ++ (x :: expression))
|
||||||
|
Err msg -> Err msg
|
||||||
|
Err msg -> Err msg
|
||||||
|
|
||||||
|
|
||||||
joy_binary_math_op : (Int -> Int -> Int) -> JList -> JList -> Result String (JList, JList)
|
joy_binary_math_op : (Int -> Int -> Int) -> JList -> JList -> Result String (JList, JList)
|
||||||
joy_binary_math_op op stack expression =
|
joy_binary_math_op op stack expression =
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue