-- Three syntactically distinct conditional shapes in ilo. Agents
-- regularly mix them up because they look similar, so this file pins
-- each one as a runnable engine-harness example. Backed by the
-- side-by-side table in skills/ilo/ilo-language.md and the ILO-P009
-- "three conditional shapes" parser hint in src/parser/mod.rs.
-- Form 1: braceless guard — EARLY RETURN from the fn when the cond is
-- true, otherwise fall through to the next statement. The cheapest
-- shape when you want to exit early on a single-expression result.
classify x:n>t;>x 0 "pos";<x 0 "neg";"zero"
-- Form 2: braced conditional `cond{body}` — runs the body if cond is
-- true, then execution CONTINUES to the next statement. No early
-- return. Useful for side-effects (e.g. prnt) mid-fn, or when you want
-- to `ret` explicitly inside a loop body.
bumped x:n>n;n=x;>x 0{n=+n 100};n
-- Form 3: brace ternary `cond{then}{else}` — produces a VALUE with no
-- early return. Cheap when both arms are bare expressions and you want
-- to bind or return the result.
label x:n>t;>x 0{"pos"}{"nonpos"}
-- Bonus form: prefix-ternary keyword `?h cond a b` — same semantics as
-- brace ternary but cheaper when the cond is bound or complex.
plabel x:n>t;c=>x 0;?h c "pos" "nonpos"
-- run: classify 5
-- out: pos
-- run: classify -3
-- out: neg
-- run: classify 0
-- out: zero
-- run: bumped 5
-- out: 105
-- run: bumped -3
-- out: -3
-- run: label 5
-- out: pos
-- run: label -1
-- out: nonpos
-- run: plabel 5
-- out: pos
-- run: plabel -1
-- out: nonpos