Difference between revisions of "End"
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{{end}} | {{end}} | ||
| − | The [[Keyword|keyword]] <syntaxhighlight lang="pascal" | + | The [[Keyword|keyword]] <syntaxhighlight lang="pascal" inline>end</syntaxhighlight> terminates an entity. |
It appears at several occasions: | It appears at several occasions: | ||
| − | * to mark the end of a module, i.e. a [[Program|<syntaxhighlight lang="pascal" | + | * to mark the end of a module, i.e. a [[Program|<syntaxhighlight lang="pascal" inline>program</syntaxhighlight>]], [[Unit|<syntaxhighlight lang="pascal" inline>unit</syntaxhighlight>]] or [[Library|<syntaxhighlight lang="pascal" inline>library</syntaxhighlight>]] |
* to conclude a [[Block|block]] of statements or instructions respectively | * to conclude a [[Block|block]] of statements or instructions respectively | ||
| − | ** either started by [[Begin|<syntaxhighlight lang="pascal" | + | ** either started by [[Begin|<syntaxhighlight lang="pascal" inline>begin</syntaxhighlight>]], or |
| − | ** started by [[Asm|<syntaxhighlight lang="delphi" | + | ** started by [[Asm|<syntaxhighlight lang="delphi" inline>asm</syntaxhighlight>]] |
* to wrap up some language constructs: | * to wrap up some language constructs: | ||
| − | ** most prominently [[If and Then|<syntaxhighlight lang="pascal" | + | ** most prominently [[If and Then|<syntaxhighlight lang="pascal" inline>if … then … end</syntaxhighlight>]], or |
| − | ** [[Case|<syntaxhighlight lang="pascal" | + | ** [[Case|<syntaxhighlight lang="pascal" inline>case</syntaxhighlight>]] … [[Of|<syntaxhighlight lang="pascal" inline>of</syntaxhighlight>]] … <syntaxhighlight lang="pascal" inline>end</syntaxhighlight>, but also |
| − | ** [[Try, Except and Finally|<syntaxhighlight lang="delphi" | + | ** [[Try, Except and Finally|<syntaxhighlight lang="delphi" inline>try … except … finally … end</syntaxhighlight>]] |
| − | * to finish off certain [[Type|type]] declarations, such as [[Object|<syntaxhighlight lang="delphi" | + | * to finish off certain [[Type|type]] declarations, such as [[Object|<syntaxhighlight lang="delphi" inline>object</syntaxhighlight>]], [[Record|<syntaxhighlight lang="pascal" inline>record</syntaxhighlight>]] and [[Class|<syntaxhighlight lang="delphi" inline>class</syntaxhighlight>]] |
| − | * | + | * in [[Extended Pascal|extended Pascal]] <syntaxhighlight lang="pascal" inline>to end do …</syntaxhighlight> starts the definition of the [[Finalization|<syntaxhighlight lang="pascal" inline>finalization</syntaxhighlight> part of a module]] |
For example: | For example: | ||
| Line 26: | Line 26: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | The <syntaxhighlight lang="pascal" | + | The <syntaxhighlight lang="pascal" inline>end</syntaxhighlight> gloss is one of the exceptions to the rule that every statement must be followed by a [[Semicolon|semicolon]]. |
| − | The statement immediately preceding an <syntaxhighlight lang="pascal" | + | The statement immediately preceding an <syntaxhighlight lang="pascal" inline>end</syntaxhighlight> does not require a semicolon. |
It is also used to end a Pascal module, in which case it is followed by a [[period]] rather than a semicolon (in the example below, the last semicolon is optional): | It is also used to end a Pascal module, in which case it is followed by a [[period]] rather than a semicolon (in the example below, the last semicolon is optional): | ||
| Line 44: | Line 44: | ||
</syntaxhighlight> | </syntaxhighlight> | ||
| − | <syntaxhighlight lang="pascal" | + | <syntaxhighlight lang="pascal" inline>end</syntaxhighlight> is used to indicate the end of the unit: |
<syntaxhighlight lang=pascal> | <syntaxhighlight lang=pascal> | ||
unit detent; | unit detent; | ||
| Line 68: | Line 68: | ||
It also closes a [[Record|record]]: | It also closes a [[Record|record]]: | ||
| − | <syntaxhighlight lang=pascal> | + | <syntaxhighlight lang="pascal"> |
Type | Type | ||
ExampleRecord = Record | ExampleRecord = Record | ||
Latest revision as of 23:49, 24 June 2020
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The keyword end terminates an entity.
It appears at several occasions:
- to mark the end of a module, i.e. a
program,unitorlibrary - to conclude a block of statements or instructions respectively
- to wrap up some language constructs:
- most prominently
if … then … end, or case…of…end, but alsotry … except … finally … end
- most prominently
- to finish off certain type declarations, such as
object,recordandclass - in extended Pascal
to end do …starts the definition of thefinalizationpart of a module
For example:
procedure proc0;
var
a, b: integer;
begin
…
end;
The end gloss is one of the exceptions to the rule that every statement must be followed by a semicolon.
The statement immediately preceding an end does not require a semicolon.
It is also used to end a Pascal module, in which case it is followed by a period rather than a semicolon (in the example below, the last semicolon is optional):
program proc1;
var
SL: TStrings;
begin
SL := TStringlist.create;
try
…
finally
SL.free;
end;
end.
end is used to indicate the end of the unit:
unit detent;
uses math;
procedure delta(r:real);
implementation
procedure delta;
begin
...
end;
...
(* Note: No corresponding '''begin''' statement *)
end.
It also closes a record:
Type
ExampleRecord = Record
Values: array [1..200] of real;
NumValues: Integer; { holds the actual number of points in the array }
Average: Real { holds the average or mean of the values in the array }
End;
Keywords: begin — do — else — end — for — if — repeat — then — until — while
