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import { _Transaction, _ISchema, NotSupported, CreateIndexColDef, _ITable, CreateIndexDef, _IStatement, _IStatementExecutor } from '../../interfaces-private.ts';import { CreateEnumType } from 'https://deno.land/x/pgsql_ast_parser@12.0.1/mod.ts';import { ExecHelper } from '../exec-utils.ts';
export class CreateEnum extends ExecHelper implements _IStatementExecutor {    private onSchema: _ISchema;    private values: string[];    private name: string;
    constructor({ schema }: _IStatement, st: CreateEnumType) {        super(st);        this.onSchema = schema.getThisOrSiblingFor(st.name);        this.values = st.values.map(x => x.value);        this.name = st.name.name;    }
    execute(t: _Transaction) {        // commit pending data before making changes        //  (because does not support further rollbacks)        t = t.fullCommit();
        // register enum        this.onSchema            .registerEnum(this.name, this.values);
        // new implicit transaction        t = t.fork();        return this.noData(t, 'CREATE');    }}