Add CreateCast and CreateCollation

packages/sij-dialect-postgresql/src/ast/schema-definition.ts

@@ -1,7 +1,7 @@
 import { DataType, Ident, QualifiedIdent, StringLit } from 'sij-core/ast';
 import { Tagged, UnTag, tag } from 'sij-core/util';
 
-type PgSchemaDefinition = CreateAccessMethod | CreateAggregate;
+type PgSchemaDefinition = CreateAccessMethod | CreateAggregate | CreateCast | CreateCollation;
 
 /*
 CREATE ACCESS METHOD name
@@ -119,4 +119,51 @@ interface AggregateOrderArgs
   > {}
 const AggregateOrderArgs = (args: UnTag<AggregateOrderArgs>): AggregateOrderArgs => tag('AggregateOrderArgs', args);
 
-export { PgSchemaDefinition, CreateAccessMethod, CreateAggregate };
+/*
+CREATE CAST (source_type AS target_type)
+    WITH FUNCTION function_name [ (argument_type [, ...]) ]
+    [ AS ASSIGNMENT | AS IMPLICIT ]
+
+CREATE CAST (source_type AS target_type)
+    WITHOUT FUNCTION
+    [ AS ASSIGNMENT | AS IMPLICIT ]
+
+CREATE CAST (source_type AS target_type)
+    WITH INOUT
+    [ AS ASSIGNMENT | AS IMPLICIT ]
+*/
+interface CreateCast extends Tagged<'CreateCast', {
+  readonly sourceType: string;
+  readonly targetType: string;
+  readonly mode: 'WithoutFunction' | 'WithInout' | { name: string, args: Array<string> }
+  readonly implicit: null | 'AsAssignmnet' | 'AsImplicit'
+}> {}
+const CreateCast = (args: UnTag<CreateCast>): CreateCast => tag('CreateCast', args);
+
+/*
+CREATE COLLATION [ IF NOT EXISTS ] name (
+    [ LOCALE = locale, ]
+    [ LC_COLLATE = lc_collate, ]
+    [ LC_CTYPE = lc_ctype, ]
+    [ PROVIDER = provider, ]
+    [ DETERMINISTIC = boolean, ]
+    [ RULES = rules, ]
+    [ VERSION = version ]
+)
+CREATE COLLATION [ IF NOT EXISTS ] name FROM existing_collation
+*/
+interface CreateCollation extends Tagged<'CreateCollation', {
+  readonly name: Ident;
+  readonly options: Ident | {
+    readonly locale: string | null;
+    readonly lcCollate: string | null;
+    readonly lcCtype: string | null;
+    readonly provider: string | null;
+    readonly deterministic: boolean; // Default true
+    readonly rules: string | null;
+    readonly version: string | null;
+  }
+}> {}
+const CreateCollation = (args: UnTag<CreateCollation>): CreateCollation => tag('CreateCollation', args);
+
+export { PgSchemaDefinition, CreateAccessMethod, CreateAggregate, CreateCast, CreateCollation };