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bpo-44792: Improve syntax errors for if expressions (GH-27506)

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Miguel Brito 2021-08-02 18:11:37 +01:00 • committed by GitHub
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@ -1083,6 +1083,7 @@ invalid_expression:
# Soft keywords need to also be ignored because they can be parsed as NAME NAME
| !(NAME STRING | SOFT_KEYWORD) a=disjunction b=expression_without_invalid {
RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "invalid syntax. Perhaps you forgot a comma?") }
| a=disjunction 'if' b=disjunction !'else' { RAISE_SYNTAX_ERROR_KNOWN_RANGE(a, b, "expected 'else' after 'if' expression") }
invalid_named_expression:
| a=expression ':=' expression {