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Valencia Vargas, Carlos
yuca
Commits
ce4ae57a
Commit
ce4ae57a
authored
3 years ago
by
Carlos Valencia
Browse files
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hello world
parent
8ea8a655
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Changes
2
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2 changed files
src/preprocessor/macros.rs
+339
-4
339 additions, 4 deletions
src/preprocessor/macros.rs
src/preprocessor/mod.rs
+154
-5
154 additions, 5 deletions
src/preprocessor/mod.rs
with
493 additions
and
9 deletions
src/preprocessor/macros.rs
+
339
−
4
View file @
ce4ae57a
...
...
@@ -122,6 +122,63 @@ macro_rules! parser {
_b
:
std
::
marker
::
PhantomData
}
};
//Recursive
(
$x:literal
<~>
(
$
(
$body:tt
)
*
))
=>
{
crate
::
combinators
::
primitive_combinators
::
Zip
{
parser_first
:
Char
{
c
:
$x
},
parser_second
:
parser!
(
$
(
$body
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<~>
(
$
(
$body:tt
)
*
))
=>
{
crate
::
combinators
::
primitive_combinators
::
Zip
{
parser_first
:
$x
,
parser_second
:
parser!
(
$
(
$body
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$body:tt
)
*
)
<~>
$x:literal
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Zip
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
Char
{
c
:
$x
},
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$body:tt
)
*
)
<~>
$x:ident
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Zip
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
$x
,
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
<~>
(
$
(
$bodyR:tt
)
*
))
=>
{
crate
::
combinators
::
primitive_combinators
::
Zip
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
<~>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Zip
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
// Zip
// Alternative
...
...
@@ -329,7 +386,8 @@ macro_rules! parser {
};
// Recursive
(
$x:literal
*>
$
(
$body:tt
)
*
)
=>
{
(
$x:literal
*>
(
$
(
$body:tt
)
*
))
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenR
{
parser_first
:
Char
{
c
:
$x
},
parser_second
:
parser!
(
$
(
$body
)
*
),
...
...
@@ -338,15 +396,50 @@ macro_rules! parser {
}
};
(
$x:ident
*>
$
(
$body:tt
)
*
)
=>
{
(
$x:ident
*>
(
$
(
$body:tt
)
*
)
)
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenR
{
parser_first
:
$x
,
parser_second
:
parser!
(
$rest
),
parser_second
:
parser!
(
$
(
$body
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$body:tt
)
*
)
*>
$x:literal
)
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenR
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
Char
{
c
:
$x
},
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$body:tt
)
*
)
*>
$x:ident
)
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenR
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
$x
,
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
*>
(
$
(
$bodyR:tt
)
*
))
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenR
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
*>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenR
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
// ThenR
// ThenL
...
...
@@ -417,6 +510,248 @@ macro_rules! parser {
_b
:
std
::
marker
::
PhantomData
}
};
// Recursive
(
$x:literal
<*
(
$
(
$body:tt
)
*
))
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenL
{
parser_first
:
Char
{
c
:
$x
},
parser_second
:
parser!
(
$
(
$body
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<*
(
$
(
$body:tt
)
*
))
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenL
{
parser_first
:
$x
,
parser_second
:
parser!
(
$
(
$body
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$body:tt
)
*
)
<*
$x:literal
)
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenL
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
Char
{
c
:
$x
},
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$body:tt
)
*
)
<*
$x:ident
)
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenL
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
$x
,
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
<*
(
$
(
$bodyR:tt
)
*
))
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenL
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
<*
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
non_primitive_combinators
::
ThenL
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_a
:
std
::
marker
::
PhantomData
,
_b
:
std
::
marker
::
PhantomData
}
};
// ThenL
((
$
(
$body:tt
)
*
)
<
|
>
$x:literal
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
Char
{
c
:
$x
},
_t
:
std
::
marker
::
PhantomData
}
};
((
$
(
$body:tt
)
*
)
<
|
>
$x:ident
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$
(
$body
)
*
),
parser_second
:
$x
,
_t
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
<
|
>
(
$
(
$bodyR:tt
)
*
))
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
((
$
(
$bodyL:tt
)
*
)
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$
(
$bodyL
)
*
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
<
|
>
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<
|
>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<
|
>
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<
|
>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
<
|
>
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<
|
>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<
|
>
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<
|
>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
<~>
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<~>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
<~>
$y:literal
<
|
>
(
$
(
$bodyR:tt
)
*
))
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<~>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<~>
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<~>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
<~>
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<~>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<~>
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<~>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
*>
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
*>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
*>
$y:literal
<
|
>
(
$
(
$bodyR:tt
)
*
))
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
*>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
*>
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
*>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
*>
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
*>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
*>
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
*>
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
*>
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<*
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
<*
$y:literal
<
|
>
(
$
(
$bodyR:tt
)
*
))
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<*
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<*
$y:literal
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<*
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:literal
<*
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<*
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
(
$x:ident
<*
$y:ident
<
|
>
$
(
$bodyR:tt
)
*
)
=>
{
crate
::
combinators
::
primitive_combinators
::
Alternative
{
parser_first
:
parser!
(
$x
<*
$y
),
parser_second
:
parser!
(
$
(
$bodyR
)
*
),
_t
:
std
::
marker
::
PhantomData
}
};
}
This diff is collapsed.
Click to expand it.
src/preprocessor/mod.rs
+
154
−
5
View file @
ce4ae57a
...
...
@@ -3,6 +3,7 @@ pub mod macros;
#[cfg(test)]
mod
tests
{
use
core
::
panic
;
use
std
::
result
;
use
crate
::
combinators
::
common
::
characters
::
Char
;
use
crate
::
parser
::
Parser
;
...
...
@@ -156,6 +157,11 @@ mod tests {
Err
(
_e
)
=>
()
}
// match parser!(('c' <* ('a' <* 'r'))).parse("car") {
// Ok(c) => assert_eq!(c, 'c'),
// Err(e) => panic!("{}", e)
// }
match
parser!
(
p3
<*
'x'
)
.parse
(
"lx"
)
{
Ok
(
c
)
=>
{
assert_eq!
(
c
,
'l'
);
...
...
@@ -187,11 +193,17 @@ mod tests {
Err
(
_e
)
=>
()
}
let
p
=
Char
{
c
:
'a'
};
match
parser!
(
'c'
*>
p
*>
'r'
)
.parse
(
"car"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'r'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
// let p = Char {c: 'a'};
// match parser!('c' *> p *> 'r').parse("car") {
// Ok(c) => assert_eq!(c, 'r'),
// Err(e) => panic!("{}", e)
// }
// let p = Char {c: 'c'};
// match parser!((p *> 'a' *> 'r')).parse("car") {
// Ok(c) => assert_eq!(c, 'r'),
// Err(e) => panic!("{}", e)
// }
match
parser!
(
p3
*>
'x'
)
.parse
(
"lx"
)
{
Ok
(
c
)
=>
{
...
...
@@ -202,4 +214,141 @@ mod tests {
}
}
#[test]
fn
test_recursive
()
->
Result
<
(),
String
>
{
match
parser!
((
'a'
*>
'b'
)
<
|
>
'c'
)
.parse
(
"ab"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
((
'a'
*>
'b'
)
<
|
>
'c'
)
.parse
(
"cb"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'c'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
let
p
=
Char
{
c
:
'c'
};
match
parser!
((
'a'
*>
'b'
)
<
|
>
p
)
.parse
(
"ab"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
let
p
=
Char
{
c
:
'c'
};
match
parser!
(
p
*>
'b'
<
|
>
'k'
)
.parse
(
"cb"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
((
'a'
<
|
>
'b'
)
<
|
>
'c'
)
.parse
(
"b"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
((
'a'
<
|
>
'b'
)
<
|
>
'c'
)
.parse
(
"b"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
(
'a'
<
|
>
'b'
<
|
>
'c'
)
.parse
(
"b"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
(
'a'
<
|
>
'b'
<
|
>
(
'c'
<
|
>
'c'
))
.parse
(
"b"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
let
p
=
Char
{
c
:
'a'
};
match
parser!
(
p
<
|
>
'b'
<
|
>
(
'c'
<
|
>
'c'
)
<
|
>
'l'
)
.parse
(
"b"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
let
p
=
Char
{
c
:
'b'
};
match
parser!
(
'a'
<
|
>
p
<
|
>
(
'c'
<
|
>
'c'
))
.parse
(
"b"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
let
p1
=
Char
{
c
:
'a'
};
let
p2
=
Char
{
c
:
'b'
};
match
parser!
(
p1
<
|
>
p2
<
|
>
(
'c'
<
|
>
'c'
))
.parse
(
"b"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'b'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
((
'a'
<~>
'b'
)
<
|
>
(
'c'
<~>
'c'
))
.parse
(
"cc"
)
{
Ok
((
c1
,
c2
))
=>
{
assert_eq!
(
c1
,
'c'
);
assert_eq!
(
c2
,
'c'
);
},
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
(
'a'
<~>
'b'
<
|
>
(
'c'
<~>
'c'
))
.parse
(
"cc"
)
{
Ok
((
c1
,
c2
))
=>
{
assert_eq!
(
c1
,
'c'
);
assert_eq!
(
c2
,
'c'
);
},
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
((
'a'
*>
'b'
)
*>
'c'
)
.parse
(
"abc"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'c'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
let
p
=
Char
{
c
:
'a'
};
match
parser!
(
p
*>
(
'b'
*>
'c'
))
.parse
(
"abc"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'c'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
((
'a'
<*
'b'
)
<*
'c'
)
.parse
(
"abc"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'a'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
(
'a'
<*
(
'b'
<*
'c'
))
.parse
(
"abc"
)
{
Ok
(
c
)
=>
assert_eq!
(
c
,
'a'
),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
((
'a'
<~>
'b'
)
<~>
'c'
)
.parse
(
"abc"
)
{
Ok
(((
a
,
b
),
c
))
=>
{
assert_eq!
(
a
,
'a'
);
assert_eq!
(
b
,
'b'
);
assert_eq!
(
c
,
'c'
);
},
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
parser!
(
'a'
<~>
(
'b'
<~>
'c'
))
.parse
(
"abc"
)
{
Ok
((
a
,
(
b
,
c
)))
=>
{
assert_eq!
(
a
,
'a'
);
assert_eq!
(
b
,
'b'
);
assert_eq!
(
c
,
'c'
);
},
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
Ok
(())
}
#[test]
fn
test_hello_world
()
->
Result
<
(),
String
>
{
let
p
=
parser!
((
'h'
*>
((((
'e'
*>
'l'
)
*>
'l'
)
*>
'o'
)
<
|
>
'i'
))
*>
((((
' '
*>
(
'w'
*>
'o'
))
*>
'r'
)
*>
'l'
)
*>
'd'
));
match
p
.parse
(
"hello world"
)
{
Ok
(
_c
)
=>
(),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
match
p
.parse
(
"hi world"
)
{
Ok
(
_c
)
=>
(),
Err
(
e
)
=>
panic!
(
"{}"
,
e
)
}
Ok
(())
}
}
\ No newline at end of file
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