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Update assignment for single list comprehensions

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This commit is contained in:
Rick Winfrey 2017-08-09 15:27:10 -07:00
parent 77d53e9127
commit f9f2e46059
1 changed files with 6 additions and 9 deletions
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15
src/Language/Python/Syntax.hs
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@ -456,15 +456,12 @@ none :: Assignment
none = makeTerm <$> symbol None <*> (Literal.Null <$ source) none = makeTerm <$> symbol None <*> (Literal.Null <$ source)
comprehension :: Assignment comprehension :: Assignment
comprehension = makeTerm <$> symbol GeneratorExpression <*> children (comprehensionDeclaration expression) comprehension = symbol ListComprehension >>= \ loc -> children (mk loc <$> expression <*> forInClause <*> (ifClause <|> emptyTerm))
<|> makeTerm <$> symbol ListComprehension <*> children (comprehensionDeclaration expression) where forInClause = symbol ForInClause *> children ((,) <$> variables <*> expressions)
<|> makeTerm <$> symbol SetComprehension <*> children (comprehensionDeclaration expression) variables = symbol Variables *> children expression
<|> makeTerm <$> symbol DictionaryComprehension <*> children (comprehensionDeclaration keyValue) ifClause = symbol IfClause *> children expression
where mk loc expr (bindings, context) ifExpr = makeTerm loc (Declaration.Comprehension expr bindings context ifExpr)
keyValue = makeTerm <$> location <*> (Literal.KeyValue <$> expression <*> expression)
comprehensionDeclaration preceeding = Declaration.Comprehension <$ many comment <*> preceeding <* symbol Variables <*> children (many expression) <*> (flip (foldr makeComprehension) <$> many nestedComprehension <*> expression)
makeComprehension (loc, makeRest) rest = makeTerm loc (makeRest rest)
nestedComprehension = (,) <$> location <*> (Declaration.Comprehension <$> expression <* symbol Variables <*> children (many expression))
conditionalExpression :: Assignment conditionalExpression :: Assignment
conditionalExpression = makeTerm <$> symbol ConditionalExpression <*> children ( conditionalExpression = makeTerm <$> symbol ConditionalExpression <*> children (