ast: Fix print call rewriting in else rules #4490
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The compiler was accidentally checking/rewriting print calls in the body of else rules before the implicit args of the else rule were processed. As a result, the compiler was generating false-positive errors for refs to undeclared args. The root of the problem was the usage of WalkBodies on the top-level rule (which implicitly walks the bodies of else rules under the top-level rule). With this change, the compiler will call WalkBodies on the head and body of each rule rather than the entire rule itself (which includes the else chain). Fixes open-policy-agent#4489 Signed-off-by: Torin Sandall <[email protected]>
srenatus
approved these changes
Mar 25, 2022
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The compiler was accidentally checking/rewriting print calls in the
body of else rules before the implicit args of the else rule were
processed. As a result, the compiler was generating false-positive
errors for refs to undeclared args. The root of the problem was the
usage of WalkBodies on the top-level rule (which implicitly walks the
bodies of else rules under the top-level rule). With this change, the
compiler will call WalkBodies on the head and body of each rule rather
than the entire rule itself (which includes the else chain).
Fixes #4489
Signed-off-by: Torin Sandall [email protected]