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module Solve
class Demand
# A reference to the solver this demand belongs to
#
# @return [Solve::RubySolver,Solve::GecodeSolver]
attr_reader :solver
# The name of the artifact this demand is for
#
# @return [String]
attr_reader :name
# The acceptable constraint of the artifact this demand is for
#
# @return [Semverse::Constraint]
attr_reader :constraint
# @param [Solve::RubySolver,Solve::GecodeSolver] solver
# @param [#to_s] name
# @param [Semverse::Constraint, #to_s] constraint
def initialize(solver, name, constraint = Semverse::DEFAULT_CONSTRAINT)
@solver = solver
@name = name
@constraint = Semverse::Constraint.coerce(constraint)
end
def to_s
"#{name} (#{constraint})"
end
def ==(other)
other.is_a?(self.class) &&
name == other.name &&
constraint == other.constraint
end
alias_method :eql?, :==
end
end
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