Sha256: 3c2a027850502c59da1bb2e4871aee27de8386153638b6efb03702a312b2455c
Contents?: true
Size: 733 Bytes
Versions: 5
Compression:
Stored size: 733 Bytes
Contents
module Alf
module Algebra
class Rewriter
include Visitor
# public interface
def call(expr, search = nil)
apply(expr)
end
# copy all default implementation
def apply(expr, *args, &bl)
send to_method_name(expr, "on_"), expr, *args, &bl
end
def on_leaf_operand(expr, *args, &bl)
expr
end
def on_shortcut(expr, *args, &bl)
apply(expr.expand, *args, &bl)
end
def on_missing(expr, *args, &bl)
copy_and_apply(expr, *args, &bl)
end
def not_supported(expr, *args, &bl)
raise NotSupportedError, "Unexpected operand `#{expr}`"
end
end # class Rewriter
end # module Algebra
end # module Alf
Version data entries
5 entries across 5 versions & 1 rubygems