import { BooleanExpression } from "./BooleanExpression";

export abstract class StringValueMatcher<T> extends BooleanExpression<T>
{
  abstract getStringValue( t:T ):string; 
}

export abstract class LitaralMatcher<T,L extends string> extends StringValueMatcher<T>
{
  _literal:L 
  constructor( literal:L )
  {
    super();
    this._literal = literal;
  }

  evaluate( t:T )
  {
    let value = this.getStringValue( t );
    return this._literal === value;
  } 
}

export abstract class RegExpMatcher<T> extends StringValueMatcher<T>
{
  private _regexp:RegExp;
  
  constructor( regexp:RegExp )
  {
    super();
    this._regexp = regexp;
  }

  evaluate( t:T )
  {
    let value = this.getStringValue( t );
    return this._regexp.test( value );
  } 
  
}