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Implementing an IS EMPTY filter

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This commit is contained in:
Clément Renault
2023-03-14 18:08:12 +01:00
parent fa2ea4a379
commit ea016d97af
12 changed files with 156 additions and 37 deletions
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17
filter-parser/src/condition.rs
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@ -21,6 +21,7 @@ pub enum Condition<'a> {
Equal(Token<'a>),
NotEqual(Token<'a>),
Null,
Empty,
Exists,
LowerThan(Token<'a>),
LowerThanOrEqual(Token<'a>),
@ -61,6 +62,22 @@ pub fn parse_is_not_null(input: Span) -> IResult<FilterCondition> {
Ok((input, FilterCondition::Not(Box::new(FilterCondition::Condition { fid: key, op: Null }))))
}
/// empty = value "IS" WS+ "EMPTY"
pub fn parse_is_empty(input: Span) -> IResult<FilterCondition> {
let (input, key) = parse_value(input)?;
let (input, _) = tuple((tag("IS"), multispace1, tag("EMPTY")))(input)?;
Ok((input, FilterCondition::Condition { fid: key, op: Empty }))
}
/// empty = value "IS" WS+ "NOT" WS+ "EMPTY"
pub fn parse_is_not_empty(input: Span) -> IResult<FilterCondition> {
let (input, key) = parse_value(input)?;
let (input, _) = tuple((tag("IS"), multispace1, tag("NOT"), multispace1, tag("EMPTY")))(input)?;
Ok((input, FilterCondition::Not(Box::new(FilterCondition::Condition { fid: key, op: Empty }))))
}
/// exist = value "EXISTS"
pub fn parse_exists(input: Span) -> IResult<FilterCondition> {
let (input, key) = terminated(parse_value, tag("EXISTS"))(input)?;