Sha256: 09f2905b53b95f245d4ddda762f30c085b713f9a1a82e862e0304d9f1b090987
Contents?: true
Size: 906 Bytes
Versions: 17
Compression:
Stored size: 906 Bytes
Contents
# frozen_string_literal: true
module Mutant
class Expression
class Parser
include Anima.new(:types)
# Parse expression
#
# @param [String] input
#
# @return [Either<String, Expression>]
# if expression is valid
#
# @return [nil]
# otherwise
def call(input)
expressions = expressions(input)
case expressions.length
when 0
Either::Left.new("Expression: #{input.inspect} is invalid")
when 1
Either::Right.new(expressions.first)
else
Either::Left.new("Expression: #{input.inspect} is ambiguous")
end
end
private
def expressions(input)
types.each_with_object([]) do |type, aggregate|
expression = type.try_parse(input) and aggregate << expression
end
end
end # Parser
end # Expression
end # Mutant
Version data entries
17 entries across 17 versions & 1 rubygems