Ormolu.Printer.Operators

This module helps handle operator chains composed of different operators that may have different precedence and fixities.

Documentation

data OpTree ty op

Intermediate representation of operator trees. It has two type parameters: ty is the type of sub-expressions, while op is the type of operators.

Constructors

OpNode ty

OpBranch (OpTree ty op) op (OpTree ty op)

opTreeLoc :: OpTree (Located a) b -> SrcSpan

Return combined SrcSpans of all elements in this OpTree.

reassociateOpTree

Arguments

:: (op -> Maybe RdrName)

How to get name of an operator

-> OpTree (Located ty) (Located op)

Original OpTree

-> OpTree (Located ty) (Located op)

Re-associated OpTree

Re-associate an OpTree taking into account automagically inferred relative precedence of operators. Users are expected to first construct an initial OpTree, then re-associate it using this function before printing.