78 lines
1.8 KiB
Rust
78 lines
1.8 KiB
Rust
use crate::sql::comment::mightbespace;
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use crate::sql::comment::shouldbespace;
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use crate::sql::error::IResult;
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use crate::sql::ident::{ident, Ident};
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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::character::complete::char;
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use nom::combinator::{map, 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 OptionStatement {
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pub name: Ident,
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pub what: bool,
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}
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impl fmt::Display for OptionStatement {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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if self.what {
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write!(f, "OPTION {}", self.name)
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} else {
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write!(f, "OPTION {} = FALSE", self.name)
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}
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}
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}
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pub fn option(i: &str) -> IResult<&str, OptionStatement> {
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let (i, _) = tag_no_case("OPTION")(i)?;
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let (i, _) = shouldbespace(i)?;
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let (i, n) = ident(i)?;
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let (i, v) = opt(alt((
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map(tuple((mightbespace, char('='), mightbespace, tag_no_case("TRUE"))), |_| true),
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map(tuple((mightbespace, char('='), mightbespace, tag_no_case("FALSE"))), |_| false),
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)))(i)?;
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Ok((
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i,
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OptionStatement {
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name: n,
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what: v.unwrap_or(true),
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},
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))
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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 option_statement() {
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let sql = "OPTION IMPORT";
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let res = option(sql);
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assert!(res.is_ok());
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let out = res.unwrap().1;
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assert_eq!("OPTION IMPORT", format!("{}", out));
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}
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#[test]
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fn option_statement_true() {
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let sql = "OPTION IMPORT = TRUE";
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let res = option(sql);
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assert!(res.is_ok());
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let out = res.unwrap().1;
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assert_eq!("OPTION IMPORT", format!("{}", out));
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}
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#[test]
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fn option_statement_false() {
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let sql = "OPTION IMPORT = FALSE";
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let res = option(sql);
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assert!(res.is_ok());
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let out = res.unwrap().1;
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assert_eq!("OPTION IMPORT = FALSE", format!("{}", out));
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}
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}
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