108 lines
1.8 KiB
Plaintext
108 lines
1.8 KiB
Plaintext
class B [ x y ] {
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};
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class X :: B [ a b ] {
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fun :* new(t) {
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| a |
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set self.a t;
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set a 100;
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set self.b (* t 2);
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set self.c (fun(b) { ##ERROR: syntax error - unknown class-level variable name
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printf "xxxx [%d]\n" b;
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});
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return self;
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};
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fun print() {
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self.c (+ self.a self.b);
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printf "a=%d b=%d\n" self.a self.b;
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}
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};
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---
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class X {
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fun :* xxx() {
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return X;
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}
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fun :* qqq() {
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return "hello"
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}
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fun String:length() { ##ERROR: syntax error - function name not valid
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return (str.length self)
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}
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}
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---
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class X {
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fun :* xxx() {
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return X;
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}
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fun :* qqq() {
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return "hello"
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}
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}
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## this triggers a runtime error as J isn't a class name
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fun J:ccc() { ##ERROR: exception not handled - "J accessed without initialization"
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return 999
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}
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---
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X := 20
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## this also raises a runtime error as X isn't a class name
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fun X:xxx() { ##ERROR: exception not handled - "not class"
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return self
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}
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---
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## this must not be very useful as Array is an index item
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## and the clase instantiation method can't specify the size
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## you can't place an item in the arrya at all.
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fun Array:*boom() {
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arr.put self 0 10 ##ERROR: exception not handled - "array index 0 out of bounds for array of size 0"
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printf "%O" self
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}
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Array:boom
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---
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class X [ a b c ] {
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fun :* new () {
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self.a := 20
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return self
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}
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fun getA() { return self.a }
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}
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## the instance variables are not accessible in out-of-class method
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## defintionas there isn't a good way to know the class structure
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## as X isn't known in advance and can point to anything
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fun X:get_a() {
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return self.a ##ERROR: syntax error - not allowed to prefix with self
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}
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printf "%d\n" ((X:new):get_a)
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---
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class F [ a b c ] {
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}
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class X [ a b c ] {
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fun oh() {
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fun F:get_a() {
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return super.a ##ERROR: syntax error - not allowed to prefix with super
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}
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}
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}
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