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Taddeüs Kroes
uva
Commits
e256c17d
Commit
e256c17d
authored
Nov 27, 2011
by
Taddeus Kroes
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funclang series4: Made lowercase out of camelcase types.
parent
c81e90da
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funclang-taddeus/series4/ass10.ml
funclang-taddeus/series4/ass10.ml
+21
-17
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funclang-taddeus/series4/ass10.ml
View file @
e256c17d
type
arith
O
p
=
Plus
|
Minus
|
Times
|
Divide
|
Modulo
type
rel
O
p
=
Eq
|
Neq
|
Lt
|
Lte
|
Gt
|
Gte
type
logic
O
p
=
And
|
Or
type
bin
Op
=
ArithOp
of
arithOp
|
RelOp
of
relOp
|
LogicOp
of
logicO
p
type
mon
O
p
=
UnaryMinus
|
Negation
type
arith
_o
p
=
Plus
|
Minus
|
Times
|
Divide
|
Modulo
type
rel
_o
p
=
Eq
|
Neq
|
Lt
|
Lte
|
Gt
|
Gte
type
logic
_o
p
=
And
|
Or
type
bin
_op
=
ArithOp
of
arith_op
|
RelOp
of
rel_op
|
LogicOp
of
logic_o
p
type
mon
_o
p
=
UnaryMinus
|
Negation
type
const
=
BoolConst
of
bool
|
IntConst
of
int
type
expr
=
Enclosure
of
expr
|
BinOp
of
expr
*
bin
O
p
*
expr
|
MonOp
of
mon
O
p
*
expr
|
BinOp
of
expr
*
bin
_o
p
*
expr
|
MonOp
of
mon
_o
p
*
expr
|
Id
of
string
|
Const
of
const
let
rec
eval_expr
=
let
eval_bin
O
p
=
let
eval_arith
O
p
=
function
let
eval_bin
_o
p
=
let
eval_arith
_o
p
=
function
Plus
->
"+"
|
Minus
->
"-"
|
Times
->
"*"
|
Divide
->
"/"
|
Modulo
->
"mod"
in
let
eval_rel
O
p
=
function
let
eval_rel
_o
p
=
function
Eq
->
"="
|
Neq
->
"!="
|
Lt
->
"<"
...
...
@@ -28,16 +28,16 @@ let rec eval_expr =
|
Gt
->
">"
|
Gte
->
">="
in
let
eval_logic
O
p
=
function
let
eval_logic
_o
p
=
function
And
->
"&&"
|
Or
->
"||"
in
function
ArithOp
op
->
eval_arith
O
p
(
op
)
|
RelOp
op
->
eval_rel
O
p
(
op
)
|
LogicOp
op
->
eval_logic
O
p
(
op
)
ArithOp
op
->
eval_arith
_o
p
(
op
)
|
RelOp
op
->
eval_rel
_o
p
(
op
)
|
LogicOp
op
->
eval_logic
_o
p
(
op
)
in
let
eval_mon
O
p
=
function
let
eval_mon
_o
p
=
function
UnaryMinus
->
"-"
|
Negation
->
"!"
in
...
...
@@ -47,25 +47,29 @@ let rec eval_expr =
in
function
Enclosure
e
->
"("
^
eval_expr
(
e
)
^
")"
|
BinOp
(
e1
,
op
,
e2
)
->
eval_expr
(
e1
)
^
" "
^
eval_bin
O
p
(
op
)
|
BinOp
(
e1
,
op
,
e2
)
->
eval_expr
(
e1
)
^
" "
^
eval_bin
_o
p
(
op
)
^
" "
^
eval_expr
(
e2
)
|
MonOp
(
op
,
e
)
->
eval_mon
O
p
(
op
)
^
eval_expr
(
e
)
|
MonOp
(
op
,
e
)
->
eval_mon
_o
p
(
op
)
^
eval_expr
(
e
)
|
Id
id
->
id
|
Const
c
->
eval_const
(
c
)
;;
(* (a) *)
print_endline
(
eval_expr
(
Enclosure
(
Id
"a"
)));;
(* -a *)
print_endline
(
eval_expr
(
MonOp
(
UnaryMinus
,
Id
"a"
)));;
(* a - b *)
print_endline
(
eval_expr
(
BinOp
(
Id
"a"
,
ArithOp
Minus
,
Id
"b"
)));;
(* a * (-b + 1) *)
let
a_times
b
=
BinOp
(
Id
"a"
,
ArithOp
Times
,
b
)
in
let
uminus
a
=
MonOp
(
UnaryMinus
,
a
)
in
let
plus
a
b
=
BinOp
(
a
,
ArithOp
Plus
,
b
)
in
let
one
=
Const
(
IntConst
1
)
in
print_endline
(
eval_expr
(
a_times
(
Enclosure
(
plus
(
uminus
(
Id
"b"
))
one
))));;
(* a = b && c *)
let
b_and_c
=
BinOp
(
Id
"b"
,
LogicOp
And
,
Id
"c"
)
in
print_endline
(
eval_expr
(
BinOp
(
Id
"a"
,
RelOp
Eq
,
b_and_c
)));;
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