class ##ERROR: syntax error - no class body

---

class B ##ERROR: syntax error - no class body

---

class B ( ##ERROR: syntax error - block expression expected as 'class' body
)

---

class B + ##ERROR: syntax error - prohibited binary operator - +

---

J := 11
class B {
	if (J = 10) {
		defun :*newA() {
			return self
		}
	} else {
		defun :*newB() {
			return self
		}
	}
}

t2 := (B:newB)
t1 := (B:newA) ##ERROR: exception not handled - "unable to send newA to B - 'newA' not found in B"

---

class B [ x ] {
	if (x > 0) { ##ERROR: syntax error - prohibited access to instance variable - x
	}
}

---

class B [ x y ] {

};

class X :: B [ a b ] {
	fun :* new(t) {
		| a |
		set self.a t;
		set a 100;
		set self.b (* t 2);

		set self.c (fun(b) {  ##ERROR: syntax error - unknown class-level variable name
			printf "xxxx [%d]\n" b;
		});
		return self;
	};

	fun print() {
		self.c (+ self.a self.b);
		printf "a=%d b=%d\n" self.a self.b;
	}
};
	

---

class X {
	fun :* xxx() {
		return X;
	}
	fun :* qqq() {
		return "hello"
	}

	fun String:length()  { ##ERROR: syntax error - function name not valid
		return (str.length self)
	}
}

---
class X {
	fun :* xxx() {
		return X;
	}
	fun :* qqq() {
		return "hello"
	}
}

## this triggers a runtime error as J isn't a class name
fun J:ccc()  { ##ERROR: exception not handled - "J accessed without initialization"
	return 999
}

---

X := 20

## this also raises a runtime error as X isn't a class name
fun X:xxx() { ##ERROR: exception not handled - "not class"
	return self
}

---

## this must not be very useful as Array is an index item
## and the clase instantiation method can't specify the size
## you can't place an item in the arrya at all.

fun Array:*boom() {
	core.put self 0 10 ##ERROR: exception not handled - "position(0) out of range - negative or greater than or equal to 0"
	printf "%O" self
	return self
}
Array:boom

---

class X [ a  b c ] {
	fun :* new () {
		self.a := 20
		return self
	}

	fun getA() { return self.a }
}

## the instance variables are not accessible in out-of-class method
## defintionas there isn't a good way to know the class structure
## as X isn't known in advance and can point to anything
fun X:get_a() {
	return self.a ##ERROR: syntax error - not allowed to prefix with self
}

printf "%d\n" ((X:new):get_a)

---

class F [ a b c ] {
}

class X [ a b c ] {
	fun oh() {
		fun F:get_a() {
			return super.a ##ERROR: syntax error - not allowed to prefix with super
		}
	}
}

---

class F {
}

class F { ##ERROR: exception not handled - "prohibited redefintion of F
}

---

class F {
}

F := 30 ##ERROR: exception not handled - "prohibited redefintion of F

---


class F {
}

F := (class { ##ERROR: exception not handled - "prohibited redefintion of F"
})

---

F := (class {
})

F := (class F { ##ERROR: exception not handle - "prohibited redefintion of F"
})

##  TDOO: do we need to allow the above?

##F := 30
##class F { ##ERROR: exception not handled - "prohibited redefintion of F"
##}