Data.Gettext.Plural

This module contains definitions for plural form selection expressions AST, and an evaluator function for such expressions.

Data types

data BinOp

Supported binary operations

Constructors

Equals

NotEquals

Greater

NotGreater

Less

NotLess

And

Or

Xor

Mod

Plus

Minus

Multiply

Divide

Instances

Eq BinOp

Methods

(==) :: BinOp -> BinOp -> Bool

(/=) :: BinOp -> BinOp -> Bool

Show BinOp

Methods

showsPrec :: Int -> BinOp -> ShowS

show :: BinOp -> String

showList :: [BinOp] -> ShowS

data Expr

Plural form selection expression AST

Constructors

N

The n variable

Literal Int

Literal number

If Expr Expr Expr

Ternary operator (... ? ... : ...)

Negate Expr

Unary arithmetic negation (as in -1).

Not Expr

Unary logic negation (as in ! (n == 1))

Binary BinOp Expr Expr

Binary operation

Instances

Eq Expr

Methods

(==) :: Expr -> Expr -> Bool

(/=) :: Expr -> Expr -> Bool

Show Expr

Methods

showsPrec :: Int -> Expr -> ShowS

show :: Expr -> String

showList :: [Expr] -> ShowS

Expressions

eval

Arguments

:: Expr

Expression

-> Int

Number

-> Int

Plural form index defined by expression

Evaluate the expression