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Add support for postgres json operators ->, ->>, #>, and #>> (#458)

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* add support for postgres json selection

Signed-off-by: password <rbalajis25@gmail.com>

* fix clippy

Signed-off-by: password <rbalajis25@gmail.com>

* add support for postgres `#>` and `#>>` json operator

* fix clippy

Signed-off-by: poonai <rbalajis25@gmail.com>

* resolve comments

Signed-off-by: password <rbalajis25@gmail.com>
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Poonai 2022-04-20 01:16:56 +05:30 • committed by GitHub
parent 8f207db059
commit d035784bdf
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4 changed files with 174 additions and 2 deletions
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23
src/parser.rs
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@ -1146,6 +1146,23 @@ impl<'a> Parser<'a> {
return self.parse_array_index(expr);
}
self.parse_map_access(expr)
} else if Token::Arrow == tok
|| Token::LongArrow == tok
|| Token::HashArrow == tok
|| Token::HashLongArrow == tok
{
let operator = match tok {
Token::Arrow => JsonOperator::Arrow,
Token::LongArrow => JsonOperator::LongArrow,
Token::HashArrow => JsonOperator::HashArrow,
Token::HashLongArrow => JsonOperator::HashLongArrow,
_ => unreachable!(),
};
Ok(Expr::JsonAccess {
left: Box::new(expr),
operator,
right: Box::new(self.parse_expr()?),
})
} else {
// Can only happen if `get_next_precedence` got out of sync with this function
parser_err!(format!("No infix parser for token {:?}", tok))
@ -1291,7 +1308,11 @@ impl<'a> Parser<'a> {
Token::Mul | Token::Div | Token::Mod | Token::StringConcat => Ok(40),
Token::DoubleColon => Ok(50),
Token::ExclamationMark => Ok(50),
Token::LBracket => Ok(50),
Token::LBracket
| Token::LongArrow
| Token::Arrow
| Token::HashArrow
| Token::HashLongArrow => Ok(50),
_ => Ok(0),
}
}