feat(lexer): extend Lexer and Token

src/main/kotlin/kestrel/sql/lexer/Token.kt

@@ -3,14 +3,28 @@ package kestrel.sql.lexer
 enum class TokenType {
     Identifier, IntLiteral, RealLiteral, TextLiteral,
     Create, Table, Insert, Into, Values, Select, From, Where,
-    Order, By, Asc, Desc, Limit, Delete, Update, Set, Drop,
+    Order, By, Asc, Desc, Limit, Offset, Delete, Update, Set, Drop, Truncate, Identity, Continue,
+    Alter, Add, Column, Rename, To, Default,
     And, Or, Not, Null, True, False, Primary, Key, As,
-    Index, On, Inner, Left, Outer, Join, Group, Having,
-    Begin, Commit, Rollback, Transaction, Explain,
-    Integer, Text, Boolean, Real,
+    Index, On, Inner, Left, Right, Full, Cross, Outer, Join, Lateral, Group, Having, Over, Partition,
+    Rows, Row, Range, Groups, Preceding, Following, Unbounded, Current, Exclude, Ties, Others,
+    Begin, Commit, Rollback, Transaction, Explain, Savepoint, Release,
+    Conflict, Nothing, Do, Returning,
+    Trigger, Before, After, For, Each,
+    Is, In, Between, Like, Case, When, Then, Else, End, Exists, View, Replace,
+    Union, All, Intersect, Except, With, Recursive, Distinct,
+    Cast, Cascade, Restrict, References, Foreign, Check, No, Action, Unique, Constraint,
+    Sequence, Increment, Minvalue, Maxvalue, Start, Cycle, Restart,
+    Merge, Using, Matched,
+    Prepare, Execute, Deallocate,
+    Temp, Temporary,
+    Collate,
+    Integer, Text, Boolean, Real, Decimal, Date,
     Equal, NotEqual, Less, LessEqual, Greater, GreaterEqual,
     Plus, Minus, Star, Slash, Dot,
     LeftParen, RightParen, Comma, Semicolon,
+    /** `$1`, `$2`, ... - see [kestrel.sql.ast.ParameterExpression]. [Token.intValue] carries the 1-based index. */
+    Parameter,
     EndOfInput
 }
 
@@ -38,10 +52,20 @@ internal val keywords: Map<String, TokenType> = mapOf(
     "ASC" to TokenType.Asc,
     "DESC" to TokenType.Desc,
     "LIMIT" to TokenType.Limit,
+    "OFFSET" to TokenType.Offset,
     "DELETE" to TokenType.Delete,
     "UPDATE" to TokenType.Update,
     "SET" to TokenType.Set,
     "DROP" to TokenType.Drop,
+    "TRUNCATE" to TokenType.Truncate,
+    "IDENTITY" to TokenType.Identity,
+    "CONTINUE" to TokenType.Continue,
+    "ALTER" to TokenType.Alter,
+    "ADD" to TokenType.Add,
+    "COLUMN" to TokenType.Column,
+    "RENAME" to TokenType.Rename,
+    "TO" to TokenType.To,
+    "DEFAULT" to TokenType.Default,
     "AND" to TokenType.And,
     "OR" to TokenType.Or,
     "NOT" to TokenType.Not,
@@ -55,17 +79,92 @@ internal val keywords: Map<String, TokenType> = mapOf(
     "ON" to TokenType.On,
     "INNER" to TokenType.Inner,
     "LEFT" to TokenType.Left,
+    "RIGHT" to TokenType.Right,
+    "FULL" to TokenType.Full,
+    "CROSS" to TokenType.Cross,
     "OUTER" to TokenType.Outer,
     "JOIN" to TokenType.Join,
+    "LATERAL" to TokenType.Lateral,
     "GROUP" to TokenType.Group,
     "HAVING" to TokenType.Having,
+    "OVER" to TokenType.Over,
+    "PARTITION" to TokenType.Partition,
+    "ROWS" to TokenType.Rows,
+    "ROW" to TokenType.Row,
+    "RANGE" to TokenType.Range,
+    "GROUPS" to TokenType.Groups,
+    "PRECEDING" to TokenType.Preceding,
+    "FOLLOWING" to TokenType.Following,
+    "UNBOUNDED" to TokenType.Unbounded,
+    "CURRENT" to TokenType.Current,
+    "EXCLUDE" to TokenType.Exclude,
+    "TIES" to TokenType.Ties,
+    "OTHERS" to TokenType.Others,
     "BEGIN" to TokenType.Begin,
     "COMMIT" to TokenType.Commit,
     "ROLLBACK" to TokenType.Rollback,
     "TRANSACTION" to TokenType.Transaction,
     "EXPLAIN" to TokenType.Explain,
+    "SAVEPOINT" to TokenType.Savepoint,
+    "RELEASE" to TokenType.Release,
+    "CONFLICT" to TokenType.Conflict,
+    "NOTHING" to TokenType.Nothing,
+    "DO" to TokenType.Do,
+    "RETURNING" to TokenType.Returning,
+    "TRIGGER" to TokenType.Trigger,
+    "BEFORE" to TokenType.Before,
+    "AFTER" to TokenType.After,
+    "FOR" to TokenType.For,
+    "EACH" to TokenType.Each,
     "INTEGER" to TokenType.Integer,
     "TEXT" to TokenType.Text,
     "BOOLEAN" to TokenType.Boolean,
-    "REAL" to TokenType.Real
+    "REAL" to TokenType.Real,
+    "IS" to TokenType.Is,
+    "IN" to TokenType.In,
+    "BETWEEN" to TokenType.Between,
+    "LIKE" to TokenType.Like,
+    "CASE" to TokenType.Case,
+    "WHEN" to TokenType.When,
+    "THEN" to TokenType.Then,
+    "ELSE" to TokenType.Else,
+    "END" to TokenType.End,
+    "EXISTS" to TokenType.Exists,
+    "VIEW" to TokenType.View,
+    "REPLACE" to TokenType.Replace,
+    "UNION" to TokenType.Union,
+    "ALL" to TokenType.All,
+    "INTERSECT" to TokenType.Intersect,
+    "EXCEPT" to TokenType.Except,
+    "WITH" to TokenType.With,
+    "RECURSIVE" to TokenType.Recursive,
+    "DISTINCT" to TokenType.Distinct,
+    "CAST" to TokenType.Cast,
+    "CASCADE" to TokenType.Cascade,
+    "RESTRICT" to TokenType.Restrict,
+    "DECIMAL" to TokenType.Decimal,
+    "DATE" to TokenType.Date,
+    "REFERENCES" to TokenType.References,
+    "FOREIGN" to TokenType.Foreign,
+    "CHECK" to TokenType.Check,
+    "NO" to TokenType.No,
+    "ACTION" to TokenType.Action,
+    "UNIQUE" to TokenType.Unique,
+    "CONSTRAINT" to TokenType.Constraint,
+    "SEQUENCE" to TokenType.Sequence,
+    "INCREMENT" to TokenType.Increment,
+    "MINVALUE" to TokenType.Minvalue,
+    "MAXVALUE" to TokenType.Maxvalue,
+    "START" to TokenType.Start,
+    "CYCLE" to TokenType.Cycle,
+    "RESTART" to TokenType.Restart,
+    "MERGE" to TokenType.Merge,
+    "USING" to TokenType.Using,
+    "MATCHED" to TokenType.Matched,
+    "PREPARE" to TokenType.Prepare,
+    "EXECUTE" to TokenType.Execute,
+    "DEALLOCATE" to TokenType.Deallocate,
+    "TEMP" to TokenType.Temp,
+    "TEMPORARY" to TokenType.Temporary,
+    "COLLATE" to TokenType.Collate
 )