58 lines
1.4 KiB
Rust
58 lines
1.4 KiB
Rust
use crate::sql::comment::shouldbespace;
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use crate::sql::error::IResult;
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use derive::Store;
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use nom::branch::alt;
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use nom::bytes::complete::tag_no_case;
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use nom::combinator::opt;
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use nom::sequence::tuple;
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use serde::{Deserialize, Serialize};
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use std::fmt;
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#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize, Store)]
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pub struct CancelStatement;
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impl fmt::Display for CancelStatement {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "CANCEL TRANSACTION")
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}
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}
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pub fn cancel(i: &str) -> IResult<&str, CancelStatement> {
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alt((cancel_query, cancel_basic))(i)
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}
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fn cancel_basic(i: &str) -> IResult<&str, CancelStatement> {
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let (i, _) = tag_no_case("CANCEL")(i)?;
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Ok((i, CancelStatement))
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}
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fn cancel_query(i: &str) -> IResult<&str, CancelStatement> {
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let (i, _) = tag_no_case("CANCEL")(i)?;
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let (i, _) = shouldbespace(i)?;
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let (i, _) = opt(tuple((shouldbespace, tag_no_case("TRANSACTION"))))(i)?;
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Ok((i, CancelStatement))
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn cancel_basic() {
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let sql = "CANCEL";
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let res = cancel(sql);
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assert!(res.is_ok());
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let out = res.unwrap().1;
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assert_eq!("CANCEL TRANSACTION", format!("{}", out))
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}
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#[test]
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fn cancel_query() {
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let sql = "CANCEL TRANSACTION";
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let res = cancel(sql);
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assert!(res.is_ok());
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let out = res.unwrap().1;
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assert_eq!("CANCEL TRANSACTION", format!("{}", out))
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}
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}
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