52 lines
1.1 KiB
Rust
52 lines
1.1 KiB
Rust
|
use crate::sql::comment::shouldbespace;
|
||
|
|
use crate::sql::expression::{expression, Expression};
|
||
|
|
use nom::bytes::complete::tag_no_case;
|
||
|
|
use nom::IResult;
|
||
|
|
use serde::{Deserialize, Serialize};
|
||
|
|
use std::fmt;
|
||
|
|
|
||
|
|
#[derive(Clone, Debug, Default, Eq, Hash, PartialEq, Serialize, Deserialize)]
|
||
|
|
pub struct Cond {
|
||
|
|
pub expr: Expression,
|
||
|
|
}
|
||
|
|
|
||
|
|
impl fmt::Display for Cond {
|
||
|
|
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
|
||
|
|
write!(f, "WHERE {}", self.expr)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
pub fn cond(i: &str) -> IResult<&str, Cond> {
|
||
|
|
let (i, _) = tag_no_case("WHERE")(i)?;
|
||
|
|
let (i, _) = shouldbespace(i)?;
|
||
|
|
let (i, v) = expression(i)?;
|
||
|
|
Ok((i, Cond { expr: v }))
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(test)]
|
||
|
|
mod tests {
|
||
|
|
|
||
|
|
use super::*;
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn cond_statement() {
|
||
|
|
let sql = "WHERE field = true";
|
||
|
|
let res = cond(sql);
|
||
|
|
assert!(res.is_ok());
|
||
|
|
let out = res.unwrap().1;
|
||
|
|
assert_eq!("WHERE field = true", format!("{}", out));
|
||
|
|
}
|
||
|
|
|
||
|
|
#[test]
|
||
|
|
fn cond_statement_multiple() {
|
||
|
|
let sql = "WHERE field = true AND other.field = false";
|
||
|
|
let res = cond(sql);
|
||
|
|
assert!(res.is_ok());
|
||
|
|
let out = res.unwrap().1;
|
||
|
|
assert_eq!(
|
||
|
|
"WHERE field = true AND other.field = false",
|
||
|
|
format!("{}", out)
|
||
|
|
);
|
||
|
|
}
|
||
|
|
}
|