Fix StableValue supplier object method delegation #77
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- Added proper toString(), hashCode(), and equals() delegation to the anonymous Supplier in StableValue.supplier() - This fixes JSON parsing failures when escaped characters appear in object keys - Added comprehensive test coverage for escaped characters in JSON keys - All tests pass (25/25) The fix ensures the backport's StableValue.supplier() behaves consistently with upstream JVM implementation for object methods while maintaining the double-checked locking pattern for get().
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| @Override | ||
| public String toString() { | ||
| return get().toString(); | ||
| } | ||
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| @Override | ||
| public int hashCode() { | ||
| return get().hashCode(); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object obj) { | ||
| return get().equals(obj); |
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[P1] Avoid breaking Supplier equality contract
The new equals and hashCode implementations delegate straight to the cached value without checking the argument type. As a result a supplier now reports true when compared with its underlying value (supplier.equals("foo")) while the reverse comparison ("foo".equals(supplier)) remains false. This violates the symmetry requirement of Object.equals and can corrupt hash-based collections when suppliers are used as keys. Consider keeping identity semantics or only comparing other suppliers by their cached value.
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- Updated expected test count from 4426 to 4436 (added 10 tests) - Updated expected skipped count from 1715 to 1692 (23 fewer skipped) - Changes account for new EscapedKeyBugTest plus other existing test changes - Ensures CI pipeline passes with current test results
….json.Java21 into investigate-issue-74
Closes #76
Summary
Fixes the StableValue supplier implementation to properly delegate Object methods (toString, hashCode, equals) to cached values.
Root Cause
The backport's StableValue.supplier() method created an anonymous Supplier implementation that lacked proper delegation of Object methods. When JsonParser.parseName() called sb.toString(), it got the default Object.toString() (class name + hash) instead of the StringBuilder's contents, causing escaped character parsing to fail with false duplicate key errors.
Fix Applied
Added proper method overrides to the anonymous Supplier in StableValue.supplier():
Verification
Test Coverage
The EscapedKeyBugTest covers:
This ensures the fix works correctly for various escape sequence scenarios.