class Gettext::PluralForm::Interpreter

• Gettext::PluralForm::Interpreter
• Gettext::PluralForm::ExpressionVisitor
• Reference
• Object

Overview

A interpreter that calculates the plural-form to take from syntax trees representing the plural-form expression.

Based on this interpreter from crafting interpreters

Defined in:

Constructors

• .new(expressions : Array(Expression))

  Creates an interpreter with the given expression trees from the PluralForm::Parser as input.

Instance Method Summary

• #interpret(number)

  Calculates which plural form to use for the given number

Constructor Detail

plural_form_scanner = Gettext::PluralForm::Scanner.new("nplurals=2; plural=(n > 1);")
expressions = Gettext::PluralForm::Parser.new(plural_form_scanner.scan).parse
interpreter = Gettext::PluralForm::Interpreter.new(expressions)
interpreter.interpret(1)  # => 0
interpreter.interpret(50) # => 1

Instance Method Detail