ludic/examples/modules/open_registry.ludic
Orkuncakilkaya 6cfaaf0bf9 feat(lang): open registry - other modules' defs, in an order imports cannot change
A def from another module into a registry that is not open is refused,
and defs go through visibility (the registry exported, its module in the
definer's uses). Index order: the declaring module's entries, then the
other modules' by module name, each in reading order. A registry entry
is emitted as its own file's code, so what it names is seen from its
own module. Reseed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-25 04:28:34 +03:00

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# open_registry.ludic — L8 + L3: `export open registry Systems of System` takes defs from other
# modules. The index order is the declaring module's entries, then every other module's by module
# name - alpha before zeta, although zeta is imported first - so it never depends on import order.
#
# Running it prints: clock animals weather / 2 2 3
import "reg/core"
import "reg/zeta"
import "reg/alpha"
program OpenRegistry {
entry {
var out = ""
for i in 0 .. SY_COUNT { out = out + Systems[i].key + " " }
let s = Systems[SY_ANIMALS]
let w = Systems[SY_WEATHER]
print(`{out}/ {s.run()} {SY_WEATHER} {w.run()}`)
}
}