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Contents
module Pione
module Lang
# Variable is a model for variable name objects that have name string and
# package id. We use this for getting its value from variable table in the
# environment.
#
# @note Be careful variable are not treated as a sequence, because sequence
# is a concept of elements joined by sequencial operators and the
# receivers should be evaluated.
class Variable < Expr
pione_type TypeVariable
member :name
member :package_id
# Get the value from variable table in the environment.
def eval(env)
env.variable_get(self)
end
def eval!(env)
eval(env).eval!(env)
end
def textize
("$%s" % name) + (package_id ? "@%s" % package_id : "")
end
# Compare with other variable.
def <=>(other)
raise ArgumentError.new(other) unless other.kind_of?(self.class)
name <=> other.name
end
end
end
end
Version data entries
6 entries across 6 versions & 1 rubygems