Function parse

packages/core/src/formula_parser/evaluate.ts:134–165

(
  expression: string,
  context: { field: IField; fieldMap: IFieldMap; state: IReduxState },
  updateCache?: boolean,
)

}

export function parse(
  expression: string,
  context: { field: IField; fieldMap: IFieldMap; state: IReduxState },
  updateCache?: boolean,
): IFormulaExpr | IFormulaError {
  if (!expression || !expression.trim()) {
    return {
      error: new Error(t(Strings.function_content_empty)),
    };
  }

  const field = context.field;
  const datasheetId = (field && field.property && (field.property as any).datasheetId) || '';

  if (!updateCache && ExpCache.has(datasheetId, field.id, expression)) {
    return ExpCache.get(datasheetId, field.id, expression)!;
  }

  const lexer = new FormulaExprLexer(expression);
  if (lexer.errors.length) {
    ExpCache.set(datasheetId, field.id, expression, { error: lexer.errors[0]! });
  } else {
    try {
      const ast = new FormulaExprParser(lexer, context).parse();
      ExpCache.set(datasheetId, field.id, expression, { lexer, ast });
    } catch (e) {
      ExpCache.set(datasheetId, field.id, expression, { error: e as Error });
    }
  }

  return ExpCache.get(datasheetId, field.id, expression)!;
}

/**
 * Pass in the expression and context, enter row evaluation