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Merge pull request #412 from ccrma/2023-ctors
support for constructors and destructors
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| // specifying and overloading class constructors | ||
| // requires chuck-1.5.2.0 or higher | ||
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| // a class | ||
| class Foo | ||
| { | ||
| // a member variable (this will be initialized before | ||
| // any actual constructors, as Foo's "pre-constructor") | ||
| 1 => int num; | ||
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| // constructor 1 "default" | ||
| fun @construct() | ||
| { | ||
| 13 => num; // set num to something | ||
| <<< "constructor 1:", num >>>; | ||
| } | ||
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| // constructor 2 | ||
| fun @construct( int x ) | ||
| { | ||
| x => num; | ||
| <<< "constructor 2:", x >>>; | ||
| } | ||
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| // constructor 3 (alternate method to define) | ||
| fun void Foo( int x, int y ) | ||
| { | ||
| x*y => num; | ||
| <<< "constructor 3:", x, y >>>; | ||
| } | ||
| } | ||
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| // declare a Foo, invoke constructor 1 | ||
| Foo f0; | ||
| // declare a Foo, invoke constructor 1 | ||
| Foo f1(); | ||
| // declare a Foo, invoke constructor 2 | ||
| Foo f2(15); | ||
| // instantiate a Foo, invoke constructor 3 | ||
| new Foo(8,9) @=> Foo @ f3; | ||
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| <<< f0.num, f1.num, f2.num, f3.num >>>; | ||
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| // can also invoke constructor for each element in array | ||
| Foo array1(2)[3]; | ||
| // print each element's num | ||
| for( auto f : array1 ) <<< f.num, "" >>>; | ||
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| // instantiate an array of Foo, invoking constructor for each | ||
| new Foo(6,5)[4] @=> Foo array2[]; | ||
| // print each element's num | ||
| for( auto f : array2 ) <<< f.num, "" >>>; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| // example: defining basic class constructors + destructor | ||
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| // a class | ||
| class Foo | ||
| { | ||
| // a member variable | ||
| 1 => int num; | ||
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| // constructor "default" | ||
| fun @construct() { 2 => num; } | ||
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| // another constructor | ||
| fun @construct( int x ) { x => num; } | ||
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| // yet another constructor | ||
| fun @construct( int x, int y ) { x*y => num; } | ||
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| // alternate way of define a constructor | ||
| fun void Foo( int x, int y, int z ) { x*y*z => num; } | ||
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| // destructor | ||
| fun @destruct() { <<< "destructor:", this.num >>>; } | ||
| } | ||
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| // constructor "default" | ||
| Foo f0; | ||
| // constructor "default" | ||
| Foo f1(); | ||
| // another constructor | ||
| Foo f2(15); | ||
| // yet another constructor | ||
| new Foo(8,9) @=> Foo @ f3; | ||
| // yet another constructor | ||
| new Foo(10,11,12) @=> Foo @ f4; | ||
| <<< f0.num, f1.num, f2.num, f3.num, f4.num >>>; |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,14 @@ | ||
| // example of class destructor | ||
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| // a class | ||
| class Foo | ||
| { | ||
| // class destructor | ||
| fun @destruct() | ||
| { | ||
| <<< "destructor called...", "" >>>; | ||
| } | ||
| } | ||
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| Foo foo; | ||
| // when `foo` goes out of scope, the destructor should be called... |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,10 @@ | ||
| // i++ - doesn't fully work yet (1.2.0.1) | ||
| // post increment operator | ||
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| // starting value | ||
| 4 => int i; | ||
| // assign, then increment i | ||
| i++ => int j; | ||
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| <<<"printing i, then j">>>; | ||
| <<<i>>>; | ||
| <<<j>>>; | ||
| if ( i == 5 && j == 4) <<<"success">>>; | ||
| // print (i should be 1 higher than j) | ||
| <<< i >>>; | ||
| <<< j >>>; |
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