95 lines
2.1 KiB
Rust
95 lines
2.1 KiB
Rust
use crate::sql::comment::shouldbespace;
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use crate::sql::common::commas;
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use crate::sql::error::IResult;
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use crate::sql::idiom::{idiom, Idiom};
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use nom::bytes::complete::tag_no_case;
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use nom::multi::separated_list1;
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use serde::{Deserialize, Serialize};
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use std::fmt;
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use std::ops::Deref;
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#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
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pub struct Fetchs(pub Vec<Fetch>);
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impl Deref for Fetchs {
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type Target = Vec<Fetch>;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl IntoIterator for Fetchs {
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type Item = Fetch;
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type IntoIter = std::vec::IntoIter<Self::Item>;
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fn into_iter(self) -> Self::IntoIter {
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self.0.into_iter()
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}
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}
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impl fmt::Display for Fetchs {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(
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f,
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"FETCH {}",
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self.0.iter().map(|ref v| format!("{}", v)).collect::<Vec<_>>().join(", ")
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)
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}
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}
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#[derive(Clone, Debug, Default, Eq, PartialEq, Serialize, Deserialize)]
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pub struct Fetch(pub Idiom);
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impl Deref for Fetch {
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type Target = Idiom;
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fn deref(&self) -> &Self::Target {
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&self.0
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}
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}
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impl fmt::Display for Fetch {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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write!(f, "{}", self.0)
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}
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}
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pub fn fetch(i: &str) -> IResult<&str, Fetchs> {
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let (i, _) = tag_no_case("FETCH")(i)?;
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let (i, _) = shouldbespace(i)?;
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let (i, v) = separated_list1(commas, fetch_raw)(i)?;
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Ok((i, Fetchs(v)))
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}
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fn fetch_raw(i: &str) -> IResult<&str, Fetch> {
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let (i, v) = idiom(i)?;
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Ok((i, Fetch(v)))
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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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use crate::sql::test::Parse;
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#[test]
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fn fetch_statement() {
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let sql = "FETCH field";
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let res = fetch(sql);
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assert!(res.is_ok());
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let out = res.unwrap().1;
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assert_eq!(out, Fetchs(vec![Fetch(Idiom::parse("field"))]));
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assert_eq!("FETCH field", format!("{}", out));
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}
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#[test]
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fn fetch_statement_multiple() {
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let sql = "FETCH field, other.field";
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let res = fetch(sql);
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assert!(res.is_ok());
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let out = res.unwrap().1;
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assert_eq!(
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out,
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Fetchs(vec![Fetch(Idiom::parse("field")), Fetch(Idiom::parse("other.field")),])
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);
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assert_eq!("FETCH field, other.field", format!("{}", out));
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}
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}
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