mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-05 13:13:40 +00:00
60 lines
1.4 KiB
Rust
60 lines
1.4 KiB
Rust
// run-pass
|
|
#![allow(unused_variables)]
|
|
// compile-flags: -C codegen-units=8 -O
|
|
#![allow(non_snake_case)]
|
|
|
|
fn main() {
|
|
nom_sql::selection(b"x ");
|
|
}
|
|
|
|
pub enum Err<P>{
|
|
Position(P),
|
|
NodePosition(u32),
|
|
}
|
|
|
|
pub enum IResult<I,O> {
|
|
Done(I,O),
|
|
Error(Err<I>),
|
|
Incomplete(u32, u64)
|
|
}
|
|
|
|
pub fn multispace<T: Copy>(input: T) -> ::IResult<i8, i8> {
|
|
::IResult::Done(0, 0)
|
|
}
|
|
|
|
mod nom_sql {
|
|
fn where_clause(i: &[u8]) -> ::IResult<&[u8], Option<String>> {
|
|
let X = match ::multispace(i) {
|
|
::IResult::Done(..) => ::IResult::Done(i, None::<String>),
|
|
_ => ::IResult::Error(::Err::NodePosition(0)),
|
|
};
|
|
match X {
|
|
::IResult::Done(_, _) => ::IResult::Done(i, None),
|
|
_ => X
|
|
}
|
|
}
|
|
|
|
pub fn selection(i: &[u8]) {
|
|
let Y = match {
|
|
match {
|
|
where_clause(i)
|
|
} {
|
|
::IResult::Done(_, o) => ::IResult::Done(i, Some(o)),
|
|
::IResult::Error(_) => ::IResult::Done(i, None),
|
|
_ => ::IResult::Incomplete(0, 0),
|
|
}
|
|
} {
|
|
::IResult::Done(z, _) => ::IResult::Done(z, None::<String>),
|
|
_ => return ()
|
|
};
|
|
match Y {
|
|
::IResult::Done(x, _) => {
|
|
let bytes = b"; ";
|
|
let len = x.len();
|
|
bytes[len];
|
|
}
|
|
_ => ()
|
|
}
|
|
}
|
|
}
|