Документация

classdef  Assets < matlab.mixin.Heterogeneous
   % file: +financial.@Assets/Assets.m
   properties
      Description char = 'Assets'
   end
   properties (Abstract, SetAccess = private)
      Type
   end
   methods (Abstract)
      % Not implemented by Assets class
      value = getCurrentValue(obj)
   end
   methods (Static, Sealed, Access = protected)
      function defaultObject = getDefaultScalarElement
         defaultObject = financial.DefaultAsset;
      end
   end
   methods (Sealed)
      % Implemented in separate files
      % +financial.@Assets/pie.m
      % +financial.@Assets/makeReport.m
      pie(assetArray)
      makeReport(assetArray)
   end
end

classdef Stocks < financial.Assets
   properties
      NumShares double = 0
      Symbol string
   end
   properties (SetAccess = private)
      Type = "Stocks"
   end
   properties (Dependent)
      SharePrice double
   end
   methods
      function sk = Stocks(description,numshares,symbol)
         if nargin == 0
            description = '';
            numshares = 0;
            symbol = '';
         end
         sk.Description = description;
         sk.NumShares = numshares;
         sk.Symbol = symbol;
      end
      function value = getCurrentValue(sk)
         value = sk.NumShares*sk.SharePrice;
      end
      function pps = get.SharePrice(sk)
         % Implement web access to obtain
         % Current price per share
         % Returning dummy value
         pps = 1;
      end
   end
end

classdef Bonds < financial.Assets
   properties
      FaceValue double = 0
      Yield double = 0
   end
   properties (SetAccess = private)
      Type = "Bonds"
   end
   properties (Dependent)
      CurrentYield double = 0
   end
   methods
      function b = Bonds(description,facevalue,yield)
         if nargin == 0
            description = '';
            facevalue = 0;
            yield = 0;
         end
         b.Description = description;
         b.FaceValue = facevalue;
         b.Yield = yield;
         b.Type = AssetTypes.Bonds;
      end
      function mv = getCurrentValue(b)
         y = b.Yield;
         cy = b.CurrentYield;
         if cy <= 0 || y <= 0
            mv = b.FaceValue;
         else
            mv = b.FaceValue*y/cy;
         end
      end
      function r = get.CurrentYield(b)
         % Implement web access to obtain
         % Current yield for this bond
         % Returning dummy value
         r = 0.24;
      end
   end
end

classdef Cash < financial.Assets
   properties
      Amount double = 0
   end
   properties (SetAccess = private)
      Type = "Cash"
   end
   methods
      function c = Cash(description,amount)
         if nargin == 0
            description = '';
            amount = 0;
         end
         c.Description = description;
         c.Amount = amount;
      end
      function value = getCurrentValue(c)
         value = c.Amount;
      end
      function c = save(c,amount)
         newValue = c.Amount + amount;
         c.Amount = newValue;
      end
      function c = spend(c,amount)
         newValue = c.Amount - amount;
         if newValue < 0
            c.Amount = 0;
            disp('Your balance is $0.00')
         else
            c.Amount = newValue;
         end
      end
   end
end

classdef DefaultAsset < financial.Assets
   % file: +financial.@DefaultAsset/DefaultAsset.m
   properties (SetAccess = private)
      Type = "DefaultAsset"
   end
   methods
      function obj = DefaultAsset
         obj.Description = 'Place holder';
      end
      function value = getCurrentValue(~)
         value = 0;
      end
   end
end

function makeReport(obj)
   numMembers = length(obj);
   descs = cell(1,numMembers);
   types(numMembers) = "";
   values(numMembers) = 0;
   for k = 1:numMembers
      descs{k} = obj(k).Description;
      types(k) = obj(k).Type;
      values(k) = obj(k).getCurrentValue;
   end
   t = table;
   t.Description = descs';
   t.Type = types';
   t.Value = values';
   disp(t)
end

function pie(assetArray)
   stockAmt = 0; bondAmt = 0; cashAmt = 0;
   for k=1:length(assetArray)
      if isa(assetArray(k),'financial.Stocks')
         stockAmt = stockAmt + assetArray(k).getCurrentValue;
      elseif isa(assetArray(k),'financial.Bonds')
         bondAmt = bondAmt + assetArray(k).getCurrentValue;
      elseif isa(assetArray(k),'financial.Cash')
         cashAmt = cashAmt + assetArray(k).getCurrentValue;
      end
   end
   k = 1;
   if stockAmt ~= 0
      label(k) = {'Stocks'};
      pieVector(k) = stockAmt;
      k = k +1;
   end
   if bondAmt ~= 0
      label(k) = {'Bonds'};
      pieVector(k) = bondAmt;
      k = k +1;
   end
   if cashAmt ~= 0
      label(k) = {'Cash'};
      pieVector(k) = cashAmt;
   end
   pie(pieVector,label)
   tv = stockAmt + bondAmt + cashAmt;
   stg = {['Total Value of Assets: $',num2str(tv,'%0.2f')]};
   title(stg,'FontSize',10)
end

s = financial.Stocks('Acme Motor Company',100,string('A'));
b = financial.Bonds('3 Month T',700,0.3);
c(1) = financial.Cash('Bank Account',500);
c(2) = financial.Cash('Gold',500);
assetArray  = [s,b,c];
makeReport(assetArray)
pie(assetArray)