60 lines
1.8 KiB
Plaintext
60 lines
1.8 KiB
Plaintext
// Mini-VM: function-based entry for branching
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// Local static box (duplicated from mini_vm_lib for now to avoid include gate issues)
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static box MiniVm {
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_is_digit(ch) { return ch == "0" || ch == "1" || ch == "2" || ch == "3" || ch == "4" || ch == "5" || ch == "6" || ch == "7" || ch == "8" || ch == "9" }
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read_digits(json, pos) {
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@out = ""
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loop (true) {
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@s = json.substring(pos, pos+1)
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if s == "" { break }
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if _is_digit(s) { out = out + s pos = pos + 1 } else { break }
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}
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return out
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}
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parse_first_int(json) {
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@key = "\"value\":{\"type\":\"int\",\"value\":"
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@idx = json.lastIndexOf(key)
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if idx < 0 { return "0" }
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@start = idx + key.length()
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return read_digits(json, start)
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}
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run_branch(json) {
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@n = parse_first_int(json)
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if n == "0" || n == "1" || n == "2" || n == "3" || n == "4" { print("10") return 0 }
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print("20")
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return 0
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}
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}
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// Program entry: embedded JSON (value=1 → print 10; else → 20)
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static box Main {
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main(args) {
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@vm = new MiniVm()
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@json = "{\"kind\":\"Program\",\"statements\":[{\"kind\":\"Print\",\"expression\":{\"kind\":\"Literal\",\"value\":{\"type\":\"int\",\"value\":1}}}]}"
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// If provided, override by argv[0]
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if args {
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if args.size() > 0 {
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@s = args.get(0)
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if s { json = s }
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}
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}
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return vm.run_branch(json)
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}
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}
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// Top-level fallback entry for current runner
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function main(args) {
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@vm = new MiniVm()
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@json = "{\"kind\":\"Program\",\"statements\":[{\"kind\":\"Print\",\"expression\":{\"kind\":\"Literal\",\"value\":{\"type\":\"int\",\"value\":1}}}]}"
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if args {
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if args.size() > 0 {
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@s = args.get(0)
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if s { json = s }
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}
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}
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@n = vm.parse_first_int(json)
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if n == "0" || n == "1" || n == "2" || n == "3" || n == "4" { print("10") return 0 }
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print("20")
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return 0
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}
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