Added support for ALTER OPERATOR CLASS syntax

src/ast/comments.rs

@@ -174,7 +174,16 @@ pub enum Comment {
     /// until end-of-line or end-of-file in the source code.
     ///
     /// Note: `content` will include the terminating new-line character, if any.
-    SingleLine { content: String, prefix: String },
+    /// A single-line comment, typically introduced with a prefix and spanning
+    /// until end-of-line or end-of-file in the source code.
+    ///
+    /// Note: `content` will include the terminating new-line character, if any.
+    SingleLine {
+        /// The content of the comment (including trailing newline, if any).
+        content: String,
+        /// The prefix introducing the comment (e.g. `--`, `#`).
+        prefix: String,
+    },
 
     /// A multi-line comment, typically enclosed in `/* .. */` markers. The
     /// string represents the content excluding the markers.

src/ast/data_type.rs

@@ -32,7 +32,9 @@ use super::{value::escape_single_quote_string, ColumnDef};
 #[derive(Debug, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
+/// A member of an ENUM type.
 pub enum EnumMember {
+    /// Just a name.
     Name(String),
     /// ClickHouse allows to specify an integer value for each enum value.
     ///
@@ -957,18 +959,31 @@ impl fmt::Display for TimezoneInfo {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum IntervalFields {
+    /// `YEAR` field
     Year,
+    /// `MONTH` field
     Month,
+    /// `DAY` field
     Day,
+    /// `HOUR` field
     Hour,
+    /// `MINUTE` field
     Minute,
+    /// `SECOND` field
     Second,
+    /// `YEAR TO MONTH` field
     YearToMonth,
+    /// `DAY TO HOUR` field
     DayToHour,
+    /// `DAY TO MINUTE` field
     DayToMinute,
+    /// `DAY TO SECOND` field
     DayToSecond,
+    /// `HOUR TO MINUTE` field
     HourToMinute,
+    /// `HOUR TO SECOND` field
     HourToSecond,
+    /// `MINUTE TO SECOND` field
     MinuteToSecond,
 }
 
@@ -1000,11 +1015,11 @@ impl fmt::Display for IntervalFields {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum ExactNumberInfo {
-    /// No additional information, e.g. `DECIMAL`
+    /// No additional information, e.g. `DECIMAL`.
     None,
-    /// Only precision information, e.g. `DECIMAL(10)`
+    /// Only precision information, e.g. `DECIMAL(10)`.
     Precision(u64),
-    /// Precision and scale information, e.g. `DECIMAL(10,2)`
+    /// Precision and scale information, e.g. `DECIMAL(10,2)`.
     PrecisionAndScale(u64, i64),
 }
 
@@ -1031,13 +1046,14 @@ impl fmt::Display for ExactNumberInfo {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum CharacterLength {
+    /// Integer length with optional unit (e.g. `CHAR(10)` or `VARCHAR(10 CHARACTERS)`).
     IntegerLength {
         /// Default (if VARYING) or maximum (if not VARYING) length
         length: u64,
         /// Optional unit. If not informed, the ANSI handles it as CHARACTERS implicitly
         unit: Option<CharLengthUnits>,
     },
-    /// VARCHAR(MAX) or NVARCHAR(MAX), used in T-SQL (Microsoft SQL Server)
+    /// VARCHAR(MAX) or NVARCHAR(MAX), used in T-SQL (Microsoft SQL Server).
     Max,
 }
 
@@ -1087,12 +1103,16 @@ impl fmt::Display for CharLengthUnits {
 #[derive(Debug, Copy, Clone, PartialEq, PartialOrd, Eq, Ord, Hash)]
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
+/// Information about [binary length][1], including length and possibly unit.
+///
+/// [1]: https://jakewheat.github.io/sql-overview/sql-2016-foundation-grammar.html#binary-length
 pub enum BinaryLength {
+    /// Integer length for binary types (e.g. `VARBINARY(100)`).
     IntegerLength {
         /// Default (if VARYING)
         length: u64,
     },
-    /// VARBINARY(MAX) used in T-SQL (Microsoft SQL Server)
+    /// VARBINARY(MAX) used in T-SQL (Microsoft SQL Server).
     Max,
 }
 
@@ -1118,13 +1138,13 @@ impl fmt::Display for BinaryLength {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum ArrayElemTypeDef {
-    /// `ARRAY`
+    /// Use `ARRAY` style without an explicit element type.
     None,
-    /// `ARRAY<INT>`
+    /// Angle-bracket style, e.g. `ARRAY<INT>`.
     AngleBracket(Box<DataType>),
-    /// `INT[]` or `INT[2]`
+    /// Square-bracket style, e.g. `INT[]` or `INT[2]`.
     SquareBracket(Box<DataType>, Option<u64>),
-    /// `Array(Int64)`
+    /// Parenthesis style, e.g. `Array(Int64)`.
     Parenthesis(Box<DataType>),
 }
 
@@ -1136,12 +1156,19 @@ pub enum ArrayElemTypeDef {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum GeometricTypeKind {
+    /// Point geometry
     Point,
+    /// Line geometry
     Line,
+    /// Line segment geometry
     LineSegment,
+    /// Box geometry
     GeometricBox,
+    /// Path geometry
     GeometricPath,
+    /// Polygon geometry
     Polygon,
+    /// Circle geometry
     Circle,
 }
 

src/ast/dcl.rs

@@ -39,15 +39,25 @@ use crate::tokenizer::Span;
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum RoleOption {
+    /// Enable or disable BYPASSRLS.
     BypassRLS(bool),
+    /// Connection limit expression.
     ConnectionLimit(Expr),
+    /// CREATEDB flag.
     CreateDB(bool),
+    /// CREATEROLE flag.
     CreateRole(bool),
+    /// INHERIT flag.
     Inherit(bool),
+    /// LOGIN flag.
     Login(bool),
+    /// Password value or NULL password.
     Password(Password),
+    /// Replication privilege flag.
     Replication(bool),
+    /// SUPERUSER flag.
     SuperUser(bool),
+    /// `VALID UNTIL` expression.
     ValidUntil(Expr),
 }
 
@@ -104,8 +114,11 @@ impl fmt::Display for RoleOption {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum SetConfigValue {
+    /// Use the default value.
     Default,
+    /// Use the current value (`FROM CURRENT`).
     FromCurrent,
+    /// Set to the provided expression value.
     Value(Expr),
 }
 
@@ -116,7 +129,9 @@ pub enum SetConfigValue {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum ResetConfig {
+    /// Reset all configuration parameters.
     ALL,
+    /// Reset the named configuration parameter.
     ConfigName(ObjectName),
 }
 
@@ -127,28 +142,48 @@ pub enum ResetConfig {
 pub enum AlterRoleOperation {
     /// Generic
     RenameRole {
+        /// Role name to rename.
         role_name: Ident,
     },
     /// MS SQL Server
     /// <https://learn.microsoft.com/en-us/sql/t-sql/statements/alter-role-transact-sql>
     AddMember {
+        /// Member name to add to the role.
         member_name: Ident,
     },
+    /// MS SQL Server
+    ///
+    /// <https://learn.microsoft.com/en-us/sql/t-sql/statements/alter-role-transact-sql>
     DropMember {
+        /// Member name to remove from the role.
         member_name: Ident,
     },
     /// PostgreSQL
     /// <https://www.postgresql.org/docs/current/sql-alterrole.html>
     WithOptions {
+        /// Role options to apply.
         options: Vec<RoleOption>,
     },
+    /// PostgreSQL
+    /// <https://www.postgresql.org/docs/current/sql-alterrole.html>
+    ///
+    /// `SET configuration_parameter { TO | = } { value | DEFAULT }`
     Set {
+        /// Configuration name to set.
         config_name: ObjectName,
+        /// Value to assign to the configuration.
         config_value: SetConfigValue,
+        /// Optional database scope for the setting.
         in_database: Option<ObjectName>,
     },
+    /// PostgreSQL
+    /// <https://www.postgresql.org/docs/current/sql-alterrole.html>
+    ///
+    /// `RESET configuration_parameter` | `RESET ALL`
     Reset {
+        /// Configuration to reset.
         config_name: ResetConfig,
+        /// Optional database scope for the reset.
         in_database: Option<ObjectName>,
     },
 }
@@ -205,14 +240,22 @@ impl fmt::Display for AlterRoleOperation {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum Use {
-    Catalog(ObjectName),            // e.g. `USE CATALOG foo.bar`
-    Schema(ObjectName),             // e.g. `USE SCHEMA foo.bar`
-    Database(ObjectName),           // e.g. `USE DATABASE foo.bar`
-    Warehouse(ObjectName),          // e.g. `USE WAREHOUSE foo.bar`
-    Role(ObjectName),               // e.g. `USE ROLE PUBLIC`
-    SecondaryRoles(SecondaryRoles), // e.g. `USE SECONDARY ROLES ALL`
-    Object(ObjectName),             // e.g. `USE foo.bar`
-    Default,                        // e.g. `USE DEFAULT`
+    /// Switch to the given catalog (e.g. `USE CATALOG ...`).
+    Catalog(ObjectName),
+    /// Switch to the given schema (e.g. `USE SCHEMA ...`).
+    Schema(ObjectName),
+    /// Switch to the given database (e.g. `USE DATABASE ...`).
+    Database(ObjectName),
+    /// Switch to the given warehouse (e.g. `USE WAREHOUSE ...`).
+    Warehouse(ObjectName),
+    /// Switch to the given role (e.g. `USE ROLE ...`).
+    Role(ObjectName),
+    /// Use secondary roles specification (e.g. `USE SECONDARY ROLES ...`).
+    SecondaryRoles(SecondaryRoles),
+    /// Use the specified object (e.g. `USE foo.bar`).
+    Object(ObjectName),
+    /// Reset to default (e.g. `USE DEFAULT`).
+    Default,
 }
 
 impl fmt::Display for Use {
@@ -239,8 +282,11 @@ impl fmt::Display for Use {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub enum SecondaryRoles {
+    /// Use all secondary roles.
     All,
+    /// Use no secondary roles.
     None,
+    /// Explicit list of secondary roles.
     List(Vec<Ident>),
 }
 
@@ -260,25 +306,43 @@ impl fmt::Display for SecondaryRoles {
 #[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 #[cfg_attr(feature = "visitor", derive(Visit, VisitMut))]
 pub struct CreateRole {
+    /// Role names to create.
     pub names: Vec<ObjectName>,
+    /// Whether `IF NOT EXISTS` was specified.
     pub if_not_exists: bool,
     // Postgres
+    /// Whether `LOGIN` was specified.
     pub login: Option<bool>,
+    /// Whether `INHERIT` was specified.
     pub inherit: Option<bool>,
+    /// Whether `BYPASSRLS` was specified.
     pub bypassrls: Option<bool>,
+    /// Optional password for the role.
     pub password: Option<Password>,
+    /// Whether `SUPERUSER` was specified.
     pub superuser: Option<bool>,
+    /// Whether `CREATEDB` was specified.
     pub create_db: Option<bool>,
+    /// Whether `CREATEROLE` was specified.
     pub create_role: Option<bool>,
+    /// Whether `REPLICATION` privilege was specified.
     pub replication: Option<bool>,
+    /// Optional connection limit expression.
     pub connection_limit: Option<Expr>,
+    /// Optional account validity expression.
     pub valid_until: Option<Expr>,
+    /// Members of `IN ROLE` clause.
     pub in_role: Vec<Ident>,
+    /// Members of `IN GROUP` clause.
     pub in_group: Vec<Ident>,
+    /// Roles listed in `ROLE` clause.
     pub role: Vec<Ident>,
+    /// Users listed in `USER` clause.
     pub user: Vec<Ident>,
+    /// Admin users listed in `ADMIN` clause.
     pub admin: Vec<Ident>,
     // MSSQL
+    /// Optional authorization owner.
     pub authorization_owner: Option<ObjectName>,
 }