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| 1 | +program initvars; |
| 2 | + |
| 3 | +{$mode objfpc}{$H+} |
| 4 | + |
| 5 | +uses |
| 6 | + {$IFDEF UNIX} |
| 7 | + cthreads, |
| 8 | + {$ENDIF} |
| 9 | + Classes, SysUtils, CustApp |
| 10 | + { you can add units after this }; |
| 11 | + |
| 12 | +type |
| 13 | + |
| 14 | + { TPointClass } |
| 15 | + |
| 16 | + TPointClass = class |
| 17 | + private |
| 18 | + X, Y: integer; |
| 19 | + FItems: TStringList; |
| 20 | + public |
| 21 | + constructor Create(AX, AY: integer); |
| 22 | + destructor Destroy; override; |
| 23 | + property X_: integer read X; |
| 24 | + property Y_: integer read Y; |
| 25 | + end; |
| 26 | + |
| 27 | +{Code starts here for TPointClass} |
| 28 | +constructor TPointClass.Create(AX, AY: integer); |
| 29 | +begin |
| 30 | + inherited Create; |
| 31 | + WriteLn('In TPointClass.Create'); |
| 32 | + if (AX <= 0) or (AY <= 0) then |
| 33 | + raise Exception.Create('AX or AY <= 0'); |
| 34 | + |
| 35 | + X := AX; |
| 36 | + Y := AY; |
| 37 | + FItems := TStringList.Create; |
| 38 | + |
| 39 | + WriteLn('TPointClass.Create completed'); |
| 40 | +end; |
| 41 | + |
| 42 | +destructor TPointClass.Destroy; |
| 43 | +begin |
| 44 | + inherited Destroy; |
| 45 | + WriteLn('In TPointClass.Destroy'); |
| 46 | + if Assigned(FItems) then |
| 47 | + begin |
| 48 | + WriteLn('TPointClass.Destroy::free FItems'); |
| 49 | + FItems.Free; |
| 50 | + end; |
| 51 | +end; |
| 52 | + |
| 53 | +{Second test case} |
| 54 | + |
| 55 | +function FindStreamHandler(filename: string): TStream; |
| 56 | +begin |
| 57 | + result := Nil; |
| 58 | +end; |
| 59 | + |
| 60 | +procedure DoSomething(filename: string); |
| 61 | +var |
| 62 | + stream: TStream; |
| 63 | + LItems: TStringlist; |
| 64 | +begin |
| 65 | + stream := FindStreamHandler(filename); |
| 66 | + |
| 67 | + if not Assigned(stream) then |
| 68 | + raise Exception.Create('Could not find handler for ' + filename); |
| 69 | + |
| 70 | + stream.Seek(0, soFromBeginning); |
| 71 | + stream.Free; |
| 72 | +end; |
| 73 | + |
| 74 | +{Main test case(s)} |
| 75 | + |
| 76 | +procedure Main; |
| 77 | +var |
| 78 | + LI: integer = 1; |
| 79 | + LDouble: double = 3.14; |
| 80 | + LStr: string; |
| 81 | + LPoint: TPoint; |
| 82 | + LPt: TPointClass; |
| 83 | +begin |
| 84 | + //TestInt; |
| 85 | + |
| 86 | + WriteLn('Test #1'); |
| 87 | + WriteLn('Value of LI -'); |
| 88 | + WriteLn(LI); |
| 89 | + WriteLn('-------------------------'); |
| 90 | + |
| 91 | + WriteLn('Test #2'); |
| 92 | + WriteLn('Value of LDouble -'); |
| 93 | + WriteLn(LDouble); |
| 94 | + WriteLn('-------------------------'); |
| 95 | + |
| 96 | + Exit; |
| 97 | + |
| 98 | + LPoint := Default(TPoint); |
| 99 | + WriteLn('Test #3'); |
| 100 | + WriteLn('Value of LPoint -'); |
| 101 | + WriteLn(LPoint.X, ' ', LPoint.Y); |
| 102 | + WriteLn('-------------------------'); |
| 103 | + |
| 104 | + WriteLn('Test #4'); |
| 105 | + WriteLn('Value of LStr -'); |
| 106 | + WriteLn('[' + LStr + ']'); |
| 107 | + WriteLn('-------------------------'); |
| 108 | + |
| 109 | + { |
| 110 | + WriteLn('Test #5'); |
| 111 | + LPt := Default(TPointClass); |
| 112 | + WriteLn('"Value" of LPt -'); |
| 113 | + WriteLn(BoolToStr(Assigned(LPt), True)); |
| 114 | + WriteLn('-------------------------'); |
| 115 | + } |
| 116 | + |
| 117 | + WriteLn('Test #6'); |
| 118 | + try |
| 119 | + LPt := TPointClass.Create(0,0); |
| 120 | + try |
| 121 | + WriteLn('LPt.X=' + LPt.X.ToString); |
| 122 | + except |
| 123 | + on e: Exception do |
| 124 | + WriteLn('Exception (3): ' + e.Message); |
| 125 | + end; |
| 126 | + except |
| 127 | + on e: Exception do |
| 128 | + begin |
| 129 | + WriteLn('Exception (2): ' + e.Message); |
| 130 | + LPt := nil; |
| 131 | + end; |
| 132 | + end; |
| 133 | + |
| 134 | + if Assigned(LPt) then |
| 135 | + begin |
| 136 | + WriteLn('LPt is assigned?'); |
| 137 | + //WriteLn('LObj.ClassName=' + LObj.ClassName); {raises exception!} |
| 138 | + end |
| 139 | + else |
| 140 | + WriteLn('LPt is NOT assigned?'); |
| 141 | + WriteLn('-------------------------'); |
| 142 | +end; |
| 143 | + |
| 144 | +begin |
| 145 | + try |
| 146 | + Main; |
| 147 | + //DoSomething('xxx.log'); |
| 148 | + except |
| 149 | + on e: Exception do |
| 150 | + WriteLn('Exception (1): ' + e.Message); |
| 151 | + end; |
| 152 | + |
| 153 | + readln; |
| 154 | +end. |
| 155 | + |
| 156 | + |
| 157 | + |
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