import type { TokenTypes } from "./tokenTypes";
import { tokenTypes } from "./tokenTypes";

export type Token = {
  type: TokenTypes;
  value: string;
  key?: string;
  whitespaceBefore: string;
};

const isToken = (type: TokenTypes, regex: RegExp) => (token: Token) =>
  token?.type === type && regex.test(token?.value);

export const isAnd = isToken(tokenTypes.RESERVED_NEWLINE, /^AND$/iu);

export const isBetween = isToken(tokenTypes.RESERVED, /^BETWEEN$/iu);

export const isLimit = isToken(tokenTypes.RESERVED_TOP_LEVEL, /^LIMIT$/iu);

export const isSet = isToken(tokenTypes.RESERVED_TOP_LEVEL, /^SET$/iu);

export const isBy = isToken(tokenTypes.RESERVED, /^BY$/iu);

export const isWindow = isToken(tokenTypes.RESERVED_TOP_LEVEL, /^WINDOW$/iu);

export const isEnd = isToken(tokenTypes.CLOSE_PAREN, /^END$/iu);