FA-4064 / Parsing / Member archive
An exponentiation chain builds a left-associated tree · case 04
An exponentiation chain builds a left-associated tree.
Case contract
Parse a valid alternating operand/caret token list with right associativity.
Why this case matters
A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.
One recorded failure
Sample boundary fixtureThis sample comes from the broken implementation of a controlled reproducer.
| Boundary fixture | Actual | Expected | Outcome |
|---|---|---|---|
| boundary 1 | ["^", ["^", "a", "b"], "c"] | ["^", "a", ["^", "b", "c"]] | Failed |
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