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Added private methods and some more type fixes.

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This commit is contained in:
Johannes Findeisen 2025-09-26 09:13:32 +02:00
commit 2e8bd52b01
4 changed files with 195 additions and 22 deletions
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31
examples/classes_demo.fun
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@ -26,10 +26,16 @@
class Point(number x, number y)
x = 0
y = 0
fun move(this, dx, dy)
/* private helper (callable only as this._shift inside class) */
fun _shift(this, dx, dy)
this.x = this.x + dx
this.y = this.y + dy
return 0
fun move(this, dx, dy)
/* delegate to private helper */
this._shift(dx, dy)
print("typeof(this._shift) = " + typeof(this._shift))
return 0
fun toString(this)
return "Point(" + to_string(this.x) + ", " + to_string(this.y) + ")"
@ -46,8 +52,8 @@ class Counter
p = Point(10, -2)
// Types
print("typeof(Point) = " + typeof(Point)) // Function (factory)
print("typeof(p) = " + typeof(p)) // Map (instance)
print("typeof(Point) = " + typeof(Point)) // Class (factory)
print("typeof(p) = " + typeof(p)) // Point(10, -2) (instance)
// Read/write fields
print("p.x = " + to_string(p["x"]) + ", p.y = " + to_string(p["y"]))
@ -58,6 +64,11 @@ print("toString(p) => " + p.toString())
p.move(3, 5)
print("after move(3,5) -> " + p.toString()) // expect Point(13, 3)
/* External private call should fail with AccessError and halt */
// This fails because of calling a private method, prefixed with "_" in the class definition. Commented out to make the
// script run without any errors.
//p._shift(1, 1)
// Another instance (explicit constructor args)
q = Point(0, 0)
print("q initially -> " + q.toString()) // Point(0, 0)
@ -68,3 +79,17 @@ print("counter inc -> " + to_string(c.inc())) // 1
print("counter inc -> " + to_string(c.inc())) // 2
print("counter add(5) -> " + to_string(c.add(5))) // 7
print("counter current value = " + to_string(c["value"]))
/* Expected output:
typeof(Point) = Class
typeof(p) = Point(10, -2)
p.x = 10, p.y = -2
toString(p) => Point(10, -2)
typeof(this._shift) = Function
after move(3,5) -> Point(13, 3)
q initially -> Point(0, 0)
counter inc -> 1
counter inc -> 2
counter add(5) -> 7
counter current value = 7
*/