Safe Haskell	Safe-Inferred
Language	Haskell2010

Hpp.Expr

Description

An expression language corresponding to the subset of C syntax that may be used in preprocessor conditional directives. See https://gcc.gnu.org/onlinedocs/cpp/If.html

Synopsis

Documentation

Expressions are literal values, binary operators applied to two sub-expressions, or unary operators applied to a single sub-expression.

Constructors

Instances details

Eq Expr Source #
Instance details Defined in Hpp.Expr Methods (==) :: Expr -> Expr -> Bool # (/=) :: Expr -> Expr -> Bool #
Ord Expr Source #
Instance details Defined in Hpp.Expr Methods compare :: Expr -> Expr -> Ordering # (<) :: Expr -> Expr -> Bool # (<=) :: Expr -> Expr -> Bool # (>) :: Expr -> Expr -> Bool # (>=) :: Expr -> Expr -> Bool # max :: Expr -> Expr -> Expr # min :: Expr -> Expr -> Expr #
Show Expr Source #
Instance details Defined in Hpp.Expr Methods showsPrec :: Int -> Expr -> ShowS # show :: Expr -> String # showList :: [Expr] -> ShowS #

Read a literal integer. These may be decimal, octal, or hexadecimal, and may have a case-insensitive suffix of u, l, or ul.

Try to read an Expr from a sequence of Tokens.

Pretty-print an Expr to something semantically equivalent to the original C syntax (some parentheses may be added).

All Exprs can be evaluated to an Int.