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Versions: 5
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Contents
module RipperRubyParser
module SexpHandlers
# Sexp handlers for hash literals
module Hashes
# Handle hash literals sexps. These can be either empty, or contain a
# nested :assoclist_from_args Sexp.
#
# @example Empty hash
# s(:hash, nil)
# @example Hash with contents
# s(:hash, s(:assoclist_from_args, ...))
def process_hash(exp)
_, body = exp.shift 2
return s(:hash) unless body
_, elems = body
s(:hash, *make_hash_items(elems))
end
# @example
# s(:assoc_splat, s(:vcall, s(:@ident, "bar")))
def process_assoc_splat(exp)
_, param = exp.shift 2
s(:kwsplat, process(param))
end
# Handle implied hashes, such as at the end of argument lists.
def process_bare_assoc_hash(exp)
_, elems = exp.shift 2
s(:hash, *make_hash_items(elems))
end
private
# Process list of items that can be either :assoc_new or :assoc_splat
def make_hash_items(elems)
result = s()
elems.each do |sub_exp|
if sub_exp.sexp_type == :assoc_new
sub_exp.sexp_body.each { |elem| result << process(elem) }
else # :assoc_splat
result << process(sub_exp)
end
end
result
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems