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Boxed Query body to save some stack space #540

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merged 1 commit into from Jul 16, 2022
Merged

Boxed Query body to save some stack space #540

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2 changes: 1 addition & 1 deletion src/ast/query.rs
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Expand Up @@ -26,7 +26,7 @@ pub struct Query {
/// WITH (common table expressions, or CTEs)
pub with: Option<With>,
/// SELECT or UNION / EXCEPT / INTERSECT
pub body: SetExpr,
pub body: Box<SetExpr>,
/// ORDER BY
pub order_by: Vec<OrderByExpr>,
/// `LIMIT { <N> | ALL }`
Expand Down
4 changes: 2 additions & 2 deletions src/parser.rs
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Expand Up @@ -3207,7 +3207,7 @@ impl<'a> Parser<'a> {
};

if !self.parse_keyword(Keyword::INSERT) {
let body = self.parse_query_body(0)?;
let body = Box::new(self.parse_query_body(0)?);

let order_by = if self.parse_keywords(&[Keyword::ORDER, Keyword::BY]) {
self.parse_comma_separated(Parser::parse_order_by_expr)?
Expand Down Expand Up @@ -3259,7 +3259,7 @@ impl<'a> Parser<'a> {

Ok(Query {
with,
body: SetExpr::Insert(insert),
body: Box::new(SetExpr::Insert(insert)),
limit: None,
order_by: vec![],
offset: None,
Expand Down
2 changes: 1 addition & 1 deletion src/test_utils.rs
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Expand Up @@ -115,7 +115,7 @@ impl TestedDialects {
/// Ensures that `sql` parses as a single [Select], and is not modified
/// after a serialization round-trip.
pub fn verified_only_select(&self, query: &str) -> Select {
match self.verified_query(query).body {
match *self.verified_query(query).body {
SetExpr::Select(s) => *s,
_ => panic!("Expected SetExpr::Select"),
}
Expand Down
12 changes: 6 additions & 6 deletions tests/sqlparser_common.rs
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Expand Up @@ -85,7 +85,7 @@ fn parse_insert_values() {
for (index, column) in columns.iter().enumerate() {
assert_eq!(column, &Ident::new(expected_columns[index].clone()));
}
match &source.body {
match &*source.body {
SetExpr::Values(Values(values)) => assert_eq!(values.as_slice(), expected_rows),
_ => unreachable!(),
}
Expand Down Expand Up @@ -3976,7 +3976,7 @@ fn parse_offset() {
assert_eq!(ast.offset, expect);
let ast = verified_query("SELECT foo FROM (SELECT * FROM bar OFFSET 2 ROWS) OFFSET 2 ROWS");
assert_eq!(ast.offset, expect);
match ast.body {
match *ast.body {
SetExpr::Select(s) => match only(s.from).relation {
TableFactor::Derived { subquery, .. } => {
assert_eq!(subquery.offset, expect);
Expand Down Expand Up @@ -4070,7 +4070,7 @@ fn parse_fetch() {
"SELECT foo FROM (SELECT * FROM bar FETCH FIRST 2 ROWS ONLY) FETCH FIRST 2 ROWS ONLY",
);
assert_eq!(ast.fetch, fetch_first_two_rows_only);
match ast.body {
match *ast.body {
SetExpr::Select(s) => match only(s.from).relation {
TableFactor::Derived { subquery, .. } => {
assert_eq!(subquery.fetch, fetch_first_two_rows_only);
Expand All @@ -4088,7 +4088,7 @@ fn parse_fetch() {
})
);
assert_eq!(ast.fetch, fetch_first_two_rows_only);
match ast.body {
match *ast.body {
SetExpr::Select(s) => match only(s.from).relation {
TableFactor::Derived { subquery, .. } => {
assert_eq!(
Expand Down Expand Up @@ -4626,7 +4626,7 @@ fn parse_merge() {
lateral: false,
subquery: Box::new(Query {
with: None,
body: SetExpr::Select(Box::new(Select {
body: Box::new(SetExpr::Select(Box::new(Select {
distinct: false,
top: None,
projection: vec![SelectItem::Wildcard],
Expand All @@ -4648,7 +4648,7 @@ fn parse_merge() {
sort_by: vec![],
having: None,
qualify: None,
})),
}))),
order_by: vec![],
limit: None,
offset: None,
Expand Down
22 changes: 11 additions & 11 deletions tests/sqlparser_mysql.rs
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Expand Up @@ -313,7 +313,7 @@ fn parse_quote_identifiers_2() {
mysql().verified_stmt(sql),
Statement::Query(Box::new(Query {
with: None,
body: SetExpr::Select(Box::new(Select {
body: Box::new(SetExpr::Select(Box::new(Select {
distinct: false,
top: None,
projection: vec![SelectItem::UnnamedExpr(Expr::Identifier(Ident {
Expand All @@ -330,7 +330,7 @@ fn parse_quote_identifiers_2() {
sort_by: vec![],
having: None,
qualify: None
})),
}))),
order_by: vec![],
limit: None,
offset: None,
Expand All @@ -347,7 +347,7 @@ fn parse_quote_identifiers_3() {
mysql().verified_stmt(sql),
Statement::Query(Box::new(Query {
with: None,
body: SetExpr::Select(Box::new(Select {
body: Box::new(SetExpr::Select(Box::new(Select {
distinct: false,
top: None,
projection: vec![SelectItem::UnnamedExpr(Expr::Identifier(Ident {
Expand All @@ -364,7 +364,7 @@ fn parse_quote_identifiers_3() {
sort_by: vec![],
having: None,
qualify: None
})),
}))),
order_by: vec![],
limit: None,
offset: None,
Expand Down Expand Up @@ -392,7 +392,7 @@ fn parse_escaped_string() {
let stmt = mysql().one_statement_parses_to(sql, "");

match stmt {
Statement::Query(query) => match query.body {
Statement::Query(query) => match *query.body {
SetExpr::Select(value) => {
let expr = expr_from_projection(only(&value.projection));
assert_eq!(
Expand Down Expand Up @@ -517,7 +517,7 @@ fn parse_simple_insert() {
assert_eq!(
Box::new(Query {
with: None,
body: SetExpr::Values(Values(vec![
body: Box::new(SetExpr::Values(Values(vec![
vec![
Expr::Value(Value::SingleQuotedString("Test Some Inserts".to_string())),
Expr::Value(Value::Number("1".to_string(), false))
Expand All @@ -530,7 +530,7 @@ fn parse_simple_insert() {
Expr::Value(Value::SingleQuotedString("Test Entry 3".to_string())),
Expr::Value(Value::Number("3".to_string(), false))
]
])),
]))),
order_by: vec![],
limit: None,
offset: None,
Expand Down Expand Up @@ -574,7 +574,7 @@ fn parse_insert_with_on_duplicate_update() {
assert_eq!(
Box::new(Query {
with: None,
body: SetExpr::Values(Values(vec![vec![
body: Box::new(SetExpr::Values(Values(vec![vec![
Expr::Value(Value::SingleQuotedString("accounting_manager".to_string())),
Expr::Value(Value::SingleQuotedString(
"Some description about the group".to_string()
Expand All @@ -583,7 +583,7 @@ fn parse_insert_with_on_duplicate_update() {
Expr::Value(Value::Boolean(true)),
Expr::Value(Value::Boolean(true)),
Expr::Value(Value::Boolean(true)),
]])),
]]))),
order_by: vec![],
limit: None,
offset: None,
Expand Down Expand Up @@ -767,7 +767,7 @@ fn parse_substring_in_select() {
assert_eq!(
Box::new(Query {
with: None,
body: SetExpr::Select(Box::new(Select {
body: Box::new(SetExpr::Select(Box::new(Select {
distinct: true,
top: None,
projection: vec![SelectItem::UnnamedExpr(Expr::Substring {
Expand Down Expand Up @@ -805,7 +805,7 @@ fn parse_substring_in_select() {
sort_by: vec![],
having: None,
qualify: None
})),
}))),
order_by: vec![],
limit: None,
offset: None,
Expand Down
6 changes: 3 additions & 3 deletions tests/sqlparser_postgres.rs
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Expand Up @@ -427,7 +427,7 @@ fn parse_update_set_from() {
lateral: false,
subquery: Box::new(Query {
with: None,
body: SetExpr::Select(Box::new(Select {
body: Box::new(SetExpr::Select(Box::new(Select {
distinct: false,
top: None,
projection: vec![
Expand All @@ -452,7 +452,7 @@ fn parse_update_set_from() {
sort_by: vec![],
having: None,
qualify: None
})),
}))),
order_by: vec![],
limit: None,
offset: None,
Expand Down Expand Up @@ -1042,7 +1042,7 @@ fn parse_prepare() {
Expr::Identifier("a2".into()),
Expr::Identifier("a3".into()),
]];
match &source.body {
match &*source.body {
SetExpr::Values(Values(values)) => assert_eq!(values.as_slice(), &expected_values),
_ => unreachable!(),
}
Expand Down