fix: std.parseJson handles integers outside Java long range#1019
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Motivation:
std.parseJson crashed with NumberFormatException when parsing JSON
integers that exceed Java long range ([-2^63, 2^63-1]). C++ jsonnet,
go-jsonnet, and jrsonnet all gracefully parse them as float64.
Modification:
- ValVisitor.scala: Catch NumberFormatException from
parseIntegralNum and fall back to Double.parseDouble, which
handles arbitrarily large integers with float64 precision.
Result:
std.parseJson("9223372036854775808") now returns a float64 value
instead of crashing.
Cross-implementation comparison:
| Expression | cpp-jsonnet | go-jsonnet | jrsonnet | sjsonnet (before) | sjsonnet (after) |
|---|---|---|---|---|---|
| parseJson("2^63") | 9223372036854775808 | 9223372036854775808 | 9.22e+18 | CRASH ❌ | 9.22e+18 ✅ |
| parseJson("-2^63-1") | -9223372036854775808 | -9223372036854775808 | -9.22e+18 | CRASH ❌ | -9.22e+18 ✅ |
| parseJson("10^31") | 10^31 (float) | 10^31 (float) | 10^31 (float) | CRASH ❌ | 10^31 (float) ✅ |
| parseJson("42") | 42 | 42 | 42 | 42 ✅ | 42 ✅ |
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Summary
std.parseJsoncrashed withNumberFormatExceptionwhen parsing JSON integers exceeding Javalongrange ([-2^63, 2^63-1])NumberFormatExceptioncatch inValVisitor.visitFloat64StringParts, falling back toDouble.parseDoubleCross-implementation comparison
parseJson("9223372036854775808")922337203685477580892233720368547758089.22e+189.22e+18✅parseJson("-9223372036854775809")-9223372036854775808-9223372036854775808-9.22e+18-9.22e+18✅parseJson("99999999999999999999999999999999")10^31(float)10^31(float)10^31(float)10^31(float) ✅parseJson("42")42424242✅42✅Test plan
./mill sjsonnet.jvm[3.3.7].test— all suites greenparsejson_large_integer.jsonnet