A step list or a registry of fn values takes no state and still reaches every state its steps take. The compiler now writes `reach <n> <function>` - every state a function can come to by a call, a `fn f` it writes or a global holding fn values it reads, to a fixed point - and ludic deps reports widest_reach beside widest_function, with how many of those states the function does not take (Maroon Lake: app_boot, 72, all 72 through fn values). --widest N lists the N functions that take the most states with what each reaches; --reach N orders them by reach. A baseline without widest_reach does not hold it until rewritten. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
21 lines
622 B
Text
21 lines
622 B
Text
# ludic deps --reach: a step list takes no state and still reaches every state its steps take
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program Reach {
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state Alpha { n: int = 0 }
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state Beta { n: int = 0 }
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state Gamma { n: int = 0 }
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function step_a(a: mut Alpha) -> void { a.n += 1 }
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function step_b(b: mut Beta) -> void { b.n += 2 }
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function step_c(c: mut Gamma) -> void { c.n += 3 }
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let STEPS: []fn() -> void = [fn step_a, fn step_b]
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function run_steps() -> void {
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for i in 0 .. len(STEPS) { STEPS[i]() }
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}
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function one(c: mut Gamma) -> void {
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step_c(c)
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run_steps()
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}
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entry (c: mut Gamma) {
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one(c)
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print(`{c.n}`)
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}
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}
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