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do1beta
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test.do
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1991-08-23
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915b
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65 lines
/*
TEST.DO
this file demonstrates method definition and parameter passing
within dObject
*/
#define MAXLOOP 10
/*
test class definition
*/
inherit(Nil,X,["i"]);
inherit(X,Y,["xx"]);
inherit(Y,Z,["yy"]);
/*
test method definition
X::doNothing is a private method of the "X" class
*/
private X::doNothing(self)
{
? "within do nothing";
}
/*
convert a variable of type "X" to a String
*/
method X::asString(self)
{
return(asString(slot(self,"i")));
}
/*
demonstrate the precedence of a local variable over an argument
*/
method X::test2(self,a)
{
a = 44;
b = 1;
c = 1;
d = 1;
? "a is ",a," ",b," ",c," ",d;
}
method X::test(self,a)
{
? "in test a is ",a;
test2(self,132);
? "in test a is still ",a;
? self;
}
/*
main program
*/
a = 1;
while(a < MAXLOOP) {
? a;
b = new(Y,1,1,1);
test(b,32);
? "in main a is ",a;
a=a+1;
}