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More nested function fun! (0.40.1)

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This commit is contained in:
Johannes Findeisen 2026-04-02 03:22:35 +02:00
commit cf320199ef
6 changed files with 369 additions and 15 deletions
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20
examples/functions/nested_functions.fun
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@ -4,12 +4,18 @@
* This file is part of the Fun programming language.
* https://fun-lang.xyz/
*
* Copyright 2026 Johannes Findeisen <you@hanez.org>
* Licensed under the terms of the Apache-2.0 license.
* https://opensource.org/license/apache-2-0
*
* Added: 2026-04-02
*/
/*
* Demonstrates nested functions that are only visible inside the
* outer function where they are defined. This example avoids
* capturing outer variables (closures) and instead passes values
* explicitly, which works with the current implementation.
*
* Added: 2026-04-02
*/
print("=== Nested functions (local to outer function) ===")
@ -19,18 +25,15 @@ fun outer(a, b)
// Defined inside outer; not visible as a global symbol
fun times3(x)
return x * 3
end
// Another local helper; also only visible within outer
fun sum_plus1(x, y)
return x + y + 1
end
// Use the local helpers
t1 = times3(a)
t2 = times3(b)
return sum_plus1(t1, t2)
end
print("outer(2, 5) -> expected 2*3 + 5*3 + 1 = 22")
print(outer(2, 5))
@ -46,19 +49,14 @@ fun demo_deep(n)
fun two(y)
fun three(z)
return z + 1
end
return three(y) + 1
end
return two(x) + 1
end
return one(n)
end
print("demo_deep(4) -> expected 7")
print(demo_deep(4))
/*
Expected output:
/* Expected output:
=== Nested functions (local to outer function) ===
outer(2, 5) -> expected 2*3 + 5*3 + 1 = 22
22