Encapsulate Insert and Delete into specific structs (#1224)

Signed-off-by: tison <wander4096@gmail.com>

src/ast/dml.rs

@@ -0,0 +1,84 @@
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#[cfg(not(feature = "std"))]
+use alloc::{boxed::Box, vec::Vec};
+
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+#[cfg(feature = "visitor")]
+use sqlparser_derive::{Visit, VisitMut};
+
+use super::{
+    Expr, FromTable, Ident, InsertAliases, MysqlInsertPriority, ObjectName, OnInsert, OrderByExpr,
+    Query, SelectItem, SqliteOnConflict, TableWithJoins,
+};
+
+/// INSERT statement.
+#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
+pub struct Insert {
+    /// Only for Sqlite
+    pub or: Option<SqliteOnConflict>,
+    /// Only for mysql
+    pub ignore: bool,
+    /// INTO - optional keyword
+    pub into: bool,
+    /// TABLE
+    #[cfg_attr(feature = "visitor", visit(with = "visit_relation"))]
+    pub table_name: ObjectName,
+    /// table_name as foo (for PostgreSQL)
+    pub table_alias: Option<Ident>,
+    /// COLUMNS
+    pub columns: Vec<Ident>,
+    /// Overwrite (Hive)
+    pub overwrite: bool,
+    /// A SQL query that specifies what to insert
+    pub source: Option<Box<Query>>,
+    /// partitioned insert (Hive)
+    pub partitioned: Option<Vec<Expr>>,
+    /// Columns defined after PARTITION
+    pub after_columns: Vec<Ident>,
+    /// whether the insert has the table keyword (Hive)
+    pub table: bool,
+    pub on: Option<OnInsert>,
+    /// RETURNING
+    pub returning: Option<Vec<SelectItem>>,
+    /// Only for mysql
+    pub replace_into: bool,
+    /// Only for mysql
+    pub priority: Option<MysqlInsertPriority>,
+    /// Only for mysql
+    pub insert_alias: Option<InsertAliases>,
+}
+
+/// DELETE statement.
+#[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
+#[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
+pub struct Delete {
+    /// Multi tables delete are supported in mysql
+    pub tables: Vec<ObjectName>,
+    /// FROM
+    pub from: FromTable,
+    /// USING (Snowflake, Postgres, MySQL)
+    pub using: Option<Vec<TableWithJoins>>,
+    /// WHERE
+    pub selection: Option<Expr>,
+    /// RETURNING
+    pub returning: Option<Vec<SelectItem>>,
+    /// ORDER BY (MySQL)
+    pub order_by: Vec<OrderByExpr>,
+    /// LIMIT (MySQL)
+    pub limit: Option<Expr>,
+}

src/ast/mod.rs

@@ -37,6 +37,7 @@ pub use self::ddl::{
     ReferentialAction, TableConstraint, UserDefinedTypeCompositeAttributeDef,
     UserDefinedTypeRepresentation, ViewColumnDef,
 };
+pub use self::dml::{Delete, Insert};
 pub use self::operator::{BinaryOperator, UnaryOperator};
 pub use self::query::{
     Cte, CteAsMaterialized, Distinct, ExceptSelectItem, ExcludeSelectItem, Fetch, ForClause,
@@ -60,6 +61,7 @@ pub use visitor::*;
 mod data_type;
 mod dcl;
 mod ddl;
+mod dml;
 pub mod helpers;
 mod operator;
 mod query;
@@ -1800,40 +1802,7 @@ pub enum Statement {
     /// ```sql
     /// INSERT
     /// ```
-    Insert {
-        /// Only for Sqlite
-        or: Option<SqliteOnConflict>,
-        /// Only for mysql
-        ignore: bool,
-        /// INTO - optional keyword
-        into: bool,
-        /// TABLE
-        #[cfg_attr(feature = "visitor", visit(with = "visit_relation"))]
-        table_name: ObjectName,
-        /// table_name as foo (for PostgreSQL)
-        table_alias: Option<Ident>,
-        /// COLUMNS
-        columns: Vec<Ident>,
-        /// Overwrite (Hive)
-        overwrite: bool,
-        /// A SQL query that specifies what to insert
-        source: Option<Box<Query>>,
-        /// partitioned insert (Hive)
-        partitioned: Option<Vec<Expr>>,
-        /// Columns defined after PARTITION
-        after_columns: Vec<Ident>,
-        /// whether the insert has the table keyword (Hive)
-        table: bool,
-        on: Option<OnInsert>,
-        /// RETURNING
-        returning: Option<Vec<SelectItem>>,
-        /// Only for mysql
-        replace_into: bool,
-        /// Only for mysql
-        priority: Option<MysqlInsertPriority>,
-        /// Only for mysql
-        insert_alias: Option<InsertAliases>,
-    },
+    Insert(Insert),
     /// ```sql
     /// INSTALL
     /// ```
@@ -1923,22 +1892,7 @@ pub enum Statement {
     /// ```sql
     /// DELETE
     /// ```
-    Delete {
-        /// Multi tables delete are supported in mysql
-        tables: Vec<ObjectName>,
-        /// FROM
-        from: FromTable,
-        /// USING (Snowflake, Postgres, MySQL)
-        using: Option<Vec<TableWithJoins>>,
-        /// WHERE
-        selection: Option<Expr>,
-        /// RETURNING
-        returning: Option<Vec<SelectItem>>,
-        /// ORDER BY (MySQL)
-        order_by: Vec<OrderByExpr>,
-        /// LIMIT (MySQL)
-        limit: Option<Expr>,
-    },
+    Delete(Delete),
     /// ```sql
     /// CREATE VIEW
     /// ```
@@ -2912,24 +2866,25 @@ impl fmt::Display for Statement {
                 }
                 Ok(())
             }
-            Statement::Insert {
-                or,
-                ignore,
-                into,
-                table_name,
-                table_alias,
-                overwrite,
-                partitioned,
-                columns,
-                after_columns,
-                source,
-                table,
-                on,
-                returning,
-                replace_into,
-                priority,
-                insert_alias,
-            } => {
+            Statement::Insert(insert) => {
+                let Insert {
+                    or,
+                    ignore,
+                    into,
+                    table_name,
+                    table_alias,
+                    overwrite,
+                    partitioned,
+                    columns,
+                    after_columns,
+                    source,
+                    table,
+                    on,
+                    returning,
+                    replace_into,
+                    priority,
+                    insert_alias,
+                } = insert;
                 let table_name = if let Some(alias) = table_alias {
                     format!("{table_name} AS {alias}")
                 } else {
@@ -3074,15 +3029,16 @@ impl fmt::Display for Statement {
                 }
                 Ok(())
             }
-            Statement::Delete {
-                tables,
-                from,
-                using,
-                selection,
-                returning,
-                order_by,
-                limit,
-            } => {
+            Statement::Delete(delete) => {
+                let Delete {
+                    tables,
+                    from,
+                    using,
+                    selection,
+                    returning,
+                    order_by,
+                    limit,
+                } = delete;
                 write!(f, "DELETE ")?;
                 if !tables.is_empty() {
                     write!(f, "{} ", display_comma_separated(tables))?;

src/parser/mod.rs

@@ -7082,7 +7082,7 @@ impl<'a> Parser<'a> {
             None
         };
 
-        Ok(Statement::Delete {
+        Ok(Statement::Delete(Delete {
             tables,
             from: if with_from_keyword {
                 FromTable::WithFromKeyword(from)
@@ -7094,7 +7094,7 @@ impl<'a> Parser<'a> {
             returning,
             order_by,
             limit,
-        })
+        }))
     }
 
     // KILL [CONNECTION | QUERY | MUTATION] processlist_id
@@ -8658,7 +8658,7 @@ impl<'a> Parser<'a> {
         }
 
         let insert = &mut self.parse_insert()?;
-        if let Statement::Insert { replace_into, .. } = insert {
+        if let Statement::Insert(Insert { replace_into, .. }) = insert {
             *replace_into = true;
         }
 
@@ -8826,7 +8826,7 @@ impl<'a> Parser<'a> {
                 None
             };
 
-            Ok(Statement::Insert {
+            Ok(Statement::Insert(Insert {
                 or,
                 table_name,
                 table_alias,
@@ -8843,7 +8843,7 @@ impl<'a> Parser<'a> {
                 replace_into,
                 priority,
                 insert_alias,
-            })
+            }))
         }
     }