Function expressionTransform

packages/core/src/formula_parser/evaluate.ts:212–295

(
  expression: string,
  { fieldMap, fieldPermissionMap }: { fieldMap: IFieldMap; fieldPermissionMap?: IFieldPermissionMap },
  to: 'id' | 'name',
)

// Convert an expression with fieldName as variable name to an expression with fieldId as variable name
export function expressionTransform(
  expression: string,
  { fieldMap, fieldPermissionMap }: { fieldMap: IFieldMap; fieldPermissionMap?: IFieldPermissionMap },
  to: 'id' | 'name',
): string {
  if (!expression) {
    return expression;
  }

  const lexer = new FormulaExprLexer(expression);
  if (!lexer) {
    return '';
  }

  // Convert fieldMap and use name as key
  let revertFieldMap = fieldMap;
  if (to === 'id') {
    revertFieldMap = {};
    for (const key in fieldMap) {
      const field = fieldMap[key]!;
      revertFieldMap[field.name] = field;
    }
  }

  return lexer.fullMatches.reduce<string>((str, token) => {
    let tokenValue = token.value;

    function getPureTokenValue() {
      const pureTokenValue = token.value.replace(/\\(.)/g, '$1');
      const field = revertFieldMap[pureTokenValue];
      // Convert the variable name according to the to parameter
      if (!field) {
        return tokenValue;
      }
      if (to === 'id') {
        return field.id;
      }

      const name = field.name.replace(/[{}\\]/g, '\\$&');
      // When name contains illegal parameters, {} wrapping is required
      if (/[/+\-|=*/><()（）!&%'"“”‘’^`~,，\s]/.test(name)) {
        return `{${name}}`;
      }
      console.log(
        t(Strings.not_found_field_the_name_as, {
          value: pureTokenValue,
        }),
      );
      return name;
    }

    function getTokenValue() {
      const pureTokenValue = tokenValue.slice(1, -1).replace(/\\(.)/g, '$1');
      const field = revertFieldMap[pureTokenValue];
      const fieldRole = getFieldRoleByFieldId(fieldPermissionMap, pureTokenValue);

      if (fieldRole === ConfigConstant.Role.None) {
        return `{${t(Strings.crypto_field)}}`;