6245dba4f0
Add option type and option value parsers value->literal in parser, implement Option literal
56 lines
1.7 KiB
Rust
56 lines
1.7 KiB
Rust
use nom::{
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bytes::complete::tag,
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character::complete::{multispace0, multispace1},
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IResult,
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};
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use super::common::{parse_condition, parse_table_name};
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use crate::syntax::RawQuerySyntax;
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pub fn parse_delete(input: &str) -> IResult<&str, RawQuerySyntax> {
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let (input, _) = tag("DELETE")(input)?;
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let (input, _) = multispace1(input)?;
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let (input, _) = tag("FROM")(input)?;
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let (input, _) = multispace1(input)?;
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let (input, table_name) = parse_table_name(input)?;
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let (input, _) = multispace0(input)?;
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let (input, condition) = parse_condition(input)?;
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Ok((
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input,
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RawQuerySyntax::Delete(table_name.to_string(), condition),
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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 crate::parsing::delete::parse_delete;
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use crate::parsing::literal::Literal;
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use crate::syntax::{Condition, RawQuerySyntax};
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#[test]
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fn test_parse_delete() {
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let (_, sntx) =
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parse_delete("DELETE FROM \"T1\" WHERE id = 1").expect("should parse");
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assert!(matches!(sntx, RawQuerySyntax::Delete(_, _)))
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}
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#[test]
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fn test_parse_delete_with_spaces() {
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let (_, sntx) =
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parse_delete("DELETE FROM T1 WHERE id = 1").expect("should parse");
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assert!(matches!(sntx, RawQuerySyntax::Delete(_, _)))
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}
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#[test]
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fn test_parse_delete_none() {
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let (_, sntx) =
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parse_delete("DELETE FROM games WHERE year = None").expect("should parse");
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if let RawQuerySyntax::Delete(tname, Some(Condition::Eq(column_name, lit))) = sntx {
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assert_eq!(tname, "games".to_string());
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assert_eq!(column_name, "year".to_string());
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assert_eq!(lit, Literal::None)
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} else {
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panic!()
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}
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}
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}
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