class Apex {
	fun ::basicNew(size) {
		return (core.basic_new self size)
	}

	fun ::respondsTo(mth) {
		return (core.cresp_to self mth)
	}

	fun respondsTo(mth) {
		return (core.iresp_to self mth)
	}

	fun basicAt(pos) {
		return (core.get self index)
	}

	fun basicAtPut(index value) {
		return (core.put self index value)
	}
}

class Object :: Apex {
}

class Class :: Apex [
	_name
	_mdic
	_spec
	_selfspec
	_superclass
	_nivars_super
	_ibrand
	_ivarnames
	_cvarnames
] {
	fun name() {
		##return (core.class_name self)
		return _class
	}

	fun instanceVariableNames() {
		## TODO: this still returns nil as the acutal manipulation of the field has not been implemented
		return _ivarnames
	}

	fun classVariableNames() {
		## TODO: this still returns nil as the acutal manipulation of the field has not been implemented
		return _cvarnames
	}
}

class Collection :: Object {
	fun length() {
		return (core.length self)
	}
}

class IndexedCollection :: Collection {
	fun slice(index count) {
		return (core.slice self index count)
	}

	fun at(index) {
		return (core.get self index)
	}

	fun atPut(index value) {
		return (core.put self index value)
	}
}

class FixedSizedCollection :: IndexedCollection {
	fun ::new(size) {
		| obj iv |
		obj := (core.basic_new self size)
		if (self:respondsTo "initValue") { ## TODO: change "initValue" to a symbol once supported
			i := 0
			iv := (self:initValue)
			while (i < size) {
				core.put obj i iv
				i := (i + 1)
			}
		}
		return obj
	}

	##fun ::initValue() {
	##	return nil
	##}
}

class Array :: FixedSizedCollection {
}

class String :: FixedSizedCollection {
	fun ::initValue() {
		##return '\0'
		return ' '
	}
}


k := "abcdefghijklmn"
printf "string length %d\n" ("aaaa":length)
printf "substring [%s]\n" (k:slice 5 6)

try {
	printf "substring [%c]\n" (k:at 13)
	k:atPut 14 'A'
	printf "[%s]\n" k
} catch (e) {
	printf "EXCEPTION %O\n" e
}

k := #[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]

try {
	k:atPut 2 'A'
	printf "%O\n" k
} catch (e) {
	printf "EXCEPTION %O\n" e
}

k := #b[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15]
try {
	k:atPut 2 -10
	printf "%O\n" k
} catch (e) {
	printf "EXCEPTION %O\n" e
}


k := (Array:new 10)
k:atPut 3 "hello"
printf "%O\n" k

printf "[%O]\n" (String:new 5)
printf "[%O]\n" (String:basicNew 5)

printf "[%O]\n" (String:respondsTo "new")
printf "[%O]\n" (String:respondsTo "newx")
printf "[%O]\n" (" ":respondsTo "new")
printf "[%O]\n" (" ":respondsTo "length")

##printf "[%O]\n" (String:classVariableNames)
##printf "[%O]\n" (String:instanceVariableNames)

##printf "%O\n" #"abcdefg"