All files / src/lexer statementFactory.ts

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import { ILexer } from "./interface";
import { Select, Use, Create, Drop } from "../barrel/statements";
 
class StatementFactory {
  public build(statement: string): ILexer {
    let builtStatement = new Select();
 
    const statementMap: { [key: string]: ILexer } = {
      select: new Select(),
      use: new Use(),
      drop: new Drop(),
      create: new Create()
    };
 
    if (Object.keys(statementMap).includes(statement)) {
      builtStatement = statementMap[statement];
    }
 
    return builtStatement;
  }
}
 
export { StatementFactory };