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Replace &Option<T> with Option<&T> #5113

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merged 6 commits into from
Jan 31, 2023
Merged

Replace &Option<T> with Option<&T> #5113

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43c6357
replace &Option<T> with Option<&T>
gaoxinge Jan 30, 2023
5de2534
fix fmt error
gaoxinge Jan 30, 2023
132c693
fix clippy error
gaoxinge Jan 30, 2023
8a7f044
fix fmt error
gaoxinge Jan 30, 2023
571e931
replace Option<&Box> with Option<&>
gaoxinge Jan 30, 2023
1900776
replace Option<&Box> with Option<&>
gaoxinge Jan 31, 2023
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138 changes: 84 additions & 54 deletions datafusion/proto/src/logical_plan/from_proto.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -876,7 +876,7 @@ pub fn parse_expr(
.ok_or_else(|| Error::required("value"))?
.try_into()?;

let expr = parse_required_expr(&field.expr, registry, "expr")?;
let expr = parse_required_expr(field.expr.as_deref(), registry, "expr")?;

Ok(Expr::GetIndexedField(GetIndexedField::new(
Box::new(expr),
Expand Down Expand Up @@ -926,7 +926,7 @@ pub fn parse_expr(
datafusion_expr::window_function::WindowFunction::AggregateFunction(
aggr_function,
),
vec![parse_required_expr(&expr.expr, registry, "expr")?],
vec![parse_required_expr(expr.expr.as_deref(), registry, "expr")?],
partition_by,
order_by,
window_frame,
Expand All @@ -937,7 +937,7 @@ pub fn parse_expr(
.ok_or_else(|| Error::unknown("BuiltInWindowFunction", *i))?
.into();

let args = parse_optional_expr(&expr.expr, registry)?
let args = parse_optional_expr(expr.expr.as_deref(), registry)?
.map(|e| vec![e])
.unwrap_or_else(Vec::new);

Expand All @@ -963,110 +963,150 @@ pub fn parse_expr(
.map(|e| parse_expr(e, registry))
.collect::<Result<Vec<_>, _>>()?,
expr.distinct,
parse_optional_expr(&expr.filter, registry)?.map(Box::new),
parse_optional_expr(expr.filter.as_deref(), registry)?.map(Box::new),
)))
}
ExprType::Alias(alias) => Ok(Expr::Alias(
Box::new(parse_required_expr(&alias.expr, registry, "expr")?),
Box::new(parse_required_expr(
alias.expr.as_deref(),
registry,
"expr",
)?),
alias.alias.clone(),
)),
ExprType::IsNullExpr(is_null) => Ok(Expr::IsNull(Box::new(parse_required_expr(
&is_null.expr,
is_null.expr.as_deref(),
registry,
"expr",
)?))),
ExprType::IsNotNullExpr(is_not_null) => Ok(Expr::IsNotNull(Box::new(
parse_required_expr(&is_not_null.expr, registry, "expr")?,
parse_required_expr(is_not_null.expr.as_deref(), registry, "expr")?,
))),
ExprType::NotExpr(not) => Ok(Expr::Not(Box::new(parse_required_expr(
&not.expr, registry, "expr",
not.expr.as_deref(),
registry,
"expr",
)?))),
ExprType::IsTrue(msg) => Ok(Expr::IsTrue(Box::new(parse_required_expr(
&msg.expr, registry, "expr",
msg.expr.as_deref(),
registry,
"expr",
)?))),
ExprType::IsFalse(msg) => Ok(Expr::IsFalse(Box::new(parse_required_expr(
&msg.expr, registry, "expr",
msg.expr.as_deref(),
registry,
"expr",
)?))),
ExprType::IsUnknown(msg) => Ok(Expr::IsUnknown(Box::new(parse_required_expr(
&msg.expr, registry, "expr",
msg.expr.as_deref(),
registry,
"expr",
)?))),
ExprType::IsNotTrue(msg) => Ok(Expr::IsNotTrue(Box::new(parse_required_expr(
&msg.expr, registry, "expr",
msg.expr.as_deref(),
registry,
"expr",
)?))),
ExprType::IsNotFalse(msg) => Ok(Expr::IsNotFalse(Box::new(parse_required_expr(
&msg.expr, registry, "expr",
msg.expr.as_deref(),
registry,
"expr",
)?))),
ExprType::IsNotUnknown(msg) => Ok(Expr::IsNotUnknown(Box::new(
parse_required_expr(&msg.expr, registry, "expr")?,
parse_required_expr(msg.expr.as_deref(), registry, "expr")?,
))),
ExprType::Between(between) => Ok(Expr::Between(Between::new(
Box::new(parse_required_expr(&between.expr, registry, "expr")?),
Box::new(parse_required_expr(
between.expr.as_deref(),
registry,
"expr",
)?),
between.negated,
Box::new(parse_required_expr(&between.low, registry, "expr")?),
Box::new(parse_required_expr(&between.high, registry, "expr")?),
Box::new(parse_required_expr(
between.low.as_deref(),
registry,
"expr",
)?),
Box::new(parse_required_expr(
between.high.as_deref(),
registry,
"expr",
)?),
))),
ExprType::Like(like) => Ok(Expr::Like(Like::new(
like.negated,
Box::new(parse_required_expr(&like.expr, registry, "expr")?),
Box::new(parse_required_expr(&like.pattern, registry, "pattern")?),
Box::new(parse_required_expr(like.expr.as_deref(), registry, "expr")?),
Box::new(parse_required_expr(
like.pattern.as_deref(),
registry,
"pattern",
)?),
parse_escape_char(&like.escape_char)?,
))),
ExprType::Ilike(like) => Ok(Expr::ILike(Like::new(
like.negated,
Box::new(parse_required_expr(&like.expr, registry, "expr")?),
Box::new(parse_required_expr(&like.pattern, registry, "pattern")?),
Box::new(parse_required_expr(like.expr.as_deref(), registry, "expr")?),
Box::new(parse_required_expr(
like.pattern.as_deref(),
registry,
"pattern",
)?),
parse_escape_char(&like.escape_char)?,
))),
ExprType::SimilarTo(like) => Ok(Expr::SimilarTo(Like::new(
like.negated,
Box::new(parse_required_expr(&like.expr, registry, "expr")?),
Box::new(parse_required_expr(&like.pattern, registry, "pattern")?),
Box::new(parse_required_expr(like.expr.as_deref(), registry, "expr")?),
Box::new(parse_required_expr(
like.pattern.as_deref(),
registry,
"pattern",
)?),
parse_escape_char(&like.escape_char)?,
))),
ExprType::Case(case) => {
let when_then_expr = case
.when_then_expr
.iter()
.map(|e| {
let when_expr = parse_required_expr_inner(
e.when_expr.as_ref(),
registry,
"when_expr",
)?;
let then_expr = parse_required_expr_inner(
e.then_expr.as_ref(),
registry,
"then_expr",
)?;
let when_expr =
parse_required_expr(e.when_expr.as_ref(), registry, "when_expr")?;
let then_expr =
parse_required_expr(e.then_expr.as_ref(), registry, "then_expr")?;
Ok((Box::new(when_expr), Box::new(then_expr)))
})
.collect::<Result<Vec<(Box<Expr>, Box<Expr>)>, Error>>()?;
Ok(Expr::Case(Case::new(
parse_optional_expr(&case.expr, registry)?.map(Box::new),
parse_optional_expr(case.expr.as_deref(), registry)?.map(Box::new),
when_then_expr,
parse_optional_expr(&case.else_expr, registry)?.map(Box::new),
parse_optional_expr(case.else_expr.as_deref(), registry)?.map(Box::new),
)))
}
ExprType::Cast(cast) => {
let expr = Box::new(parse_required_expr(&cast.expr, registry, "expr")?);
let expr =
Box::new(parse_required_expr(cast.expr.as_deref(), registry, "expr")?);
let data_type = cast.arrow_type.as_ref().required("arrow_type")?;
Ok(Expr::Cast(Cast::new(expr, data_type)))
}
ExprType::TryCast(cast) => {
let expr = Box::new(parse_required_expr(&cast.expr, registry, "expr")?);
let expr =
Box::new(parse_required_expr(cast.expr.as_deref(), registry, "expr")?);
let data_type = cast.arrow_type.as_ref().required("arrow_type")?;
Ok(Expr::TryCast(TryCast::new(expr, data_type)))
}
ExprType::Sort(sort) => Ok(Expr::Sort(Sort::new(
Box::new(parse_required_expr(&sort.expr, registry, "expr")?),
Box::new(parse_required_expr(sort.expr.as_deref(), registry, "expr")?),
sort.asc,
sort.nulls_first,
))),
ExprType::Negative(negative) => Ok(Expr::Negative(Box::new(
parse_required_expr(&negative.expr, registry, "expr")?,
parse_required_expr(negative.expr.as_deref(), registry, "expr")?,
))),
ExprType::InList(in_list) => Ok(Expr::InList {
expr: Box::new(parse_required_expr(&in_list.expr, registry, "expr")?),
expr: Box::new(parse_required_expr(
in_list.expr.as_deref(),
registry,
"expr",
)?),
list: in_list
.list
.iter()
Expand Down Expand Up @@ -1295,7 +1335,8 @@ pub fn parse_expr(
.iter()
.map(|expr| parse_expr(expr, registry))
.collect::<Result<Vec<_>, Error>>()?,
filter: parse_optional_expr(&pb.filter, registry)?.map(Box::new),
filter: parse_optional_expr(pb.filter.as_deref(), registry)?
.map(Box::new),
})
}

Expand Down Expand Up @@ -1389,27 +1430,16 @@ pub fn from_proto_binary_op(op: &str) -> Result<Operator, Error> {
}

fn parse_optional_expr(
p: &Option<Box<protobuf::LogicalExprNode>>,
p: Option<&protobuf::LogicalExprNode>,
registry: &dyn FunctionRegistry,
) -> Result<Option<Expr>, Error> {
match p {
Some(expr) => parse_expr(expr.as_ref(), registry).map(Some),
Some(expr) => parse_expr(expr, registry).map(Some),
None => Ok(None),
}
}

fn parse_required_expr(
p: &Option<Box<protobuf::LogicalExprNode>>,
registry: &dyn FunctionRegistry,
field: impl Into<String>,
) -> Result<Expr, Error> {
match p {
Some(expr) => parse_expr(expr.as_ref(), registry),
None => Err(Error::required(field)),
}
}

fn parse_required_expr_inner(
p: Option<&protobuf::LogicalExprNode>,
registry: &dyn FunctionRegistry,
field: impl Into<String>,
Expand Down
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