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feat(planner): support udf #5751

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merged 6 commits into from
Jun 6, 2022
Merged

feat(planner): support udf #5751

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f3dd30a
feat(planner): support udf
xudong963 Jun 2, 2022
7a6f874
fix lifetime
leiysky Jun 2, 2022
f686d84
add test
xudong963 Jun 4, 2022
75beab2
feat: udf for new planner
xudong963 Jun 5, 2022
83884cd
fix clippy
xudong963 Jun 5, 2022
1cba433
address comments
xudong963 Jun 6, 2022
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18 changes: 18 additions & 0 deletions common/ast/src/parser/mod.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,7 @@ use common_exception::ErrorCode;
use common_exception::Result;

use self::error::DisplayError;
use crate::ast::Expr;
use crate::ast::Statement;
use crate::parser::error::Backtrace;
use crate::parser::statement::statements;
Expand Down Expand Up @@ -52,3 +53,20 @@ pub fn parse_sql<'a>(
Err(nom::Err::Incomplete(_)) => unreachable!(),
}
}

/// Parse udf function into Expr
pub fn parse_expr<'a>(
sql_tokens: &'a [Token<'a>],
backtrace: &'a Backtrace<'a>,
) -> Result<Expr<'a>> {
match expr::expr(Input(sql_tokens, backtrace)) {
Ok((rest, expr)) if rest[0].kind == TokenKind::EOI => Ok(expr),
Ok((rest, _)) => Err(ErrorCode::SyntaxException(
rest[0].display_error("unable to parse rest of the sql".to_string()),
)),
Err(nom::Err::Error(err) | nom::Err::Failure(err)) => {
Err(ErrorCode::SyntaxException(err.display_error(())))
}
Err(nom::Err::Incomplete(_)) => unreachable!(),
}
}
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