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spring-framework/spring-beans
Sam Brannen 1b56f58999 Use depth-aware bracket parsing in PropertyAccessorUtils
Previously, canonicalPropertyName() located the end of a [key]
expression via a naive indexOf("]") search, while
AbstractNestablePropertyAccessor.getPropertyNameKeyEnd() -- used during
actual property resolution -- tracked bracket nesting depth. This meant
the two methods could disagree on the canonical form of a property
path whose map key itself contains bracket characters (e.g.,
map['key[0]']).

Similarly, getNestedPropertySeparatorIndex() tracked whether a dot
separator occurs inside a [key] expression using a simple boolean
toggle that flips on both '[' and ']', which produces an incorrect
result when a key contains an odd net count of inner bracket
characters.

To address those inconsistencies, this commit extracts the private
getPropertyNameKeyEnd() method from AbstractNestablePropertyAccessor to
a package-private static utility method in PropertyAccessorUtils, so
that canonicalPropertyName() can reuse the same depth-aware bracket
matching, and getNestedPropertySeparatorIndex() has been reworked to
track bracket nesting depth instead of toggling a boolean flag.

Closes gh-36999
2026-08-28 19:11:20 +02:00
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