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Formulas.sdf3

pdmosses/nabl/org.metaborg.meta.lang.nabl/syntax/formulas/Formulas.sdf3

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module 

imports 

  terms/Terms 
  formulas/Propositions

context-free syntax

   = <<Proposition>> 

  .Not = <
    not <Formula>
  > 
  .And = <
    <Formula> 
    and <Formula>
  > {left}
  .Or = <
    <Formula> 
    or <Formula>
  > {left}

   = <(<Formula>)> {bracket}

context-free priorities

  Formula.Not > Formula.And > Formula.Or