diff options
Diffstat (limited to 'ruby_1_9_3/ext/psych/lib/psych/visitors/to_ruby.rb')
| -rw-r--r-- | ruby_1_9_3/ext/psych/lib/psych/visitors/to_ruby.rb | 324 |
1 files changed, 0 insertions, 324 deletions
diff --git a/ruby_1_9_3/ext/psych/lib/psych/visitors/to_ruby.rb b/ruby_1_9_3/ext/psych/lib/psych/visitors/to_ruby.rb deleted file mode 100644 index 088301ac14..0000000000 --- a/ruby_1_9_3/ext/psych/lib/psych/visitors/to_ruby.rb +++ /dev/null @@ -1,324 +0,0 @@ -require 'psych/scalar_scanner' - -unless defined?(Regexp::NOENCODING) - Regexp::NOENCODING = 32 -end - -module Psych - module Visitors - ### - # This class walks a YAML AST, converting each node to ruby - class ToRuby < Psych::Visitors::Visitor - def initialize ss = ScalarScanner.new - super() - @st = {} - @ss = ss - @domain_types = Psych.domain_types - end - - def accept target - result = super - return result if @domain_types.empty? || !target.tag - - key = target.tag.sub(/^[!\/]*/, '').sub(/(,\d+)\//, '\1:') - key = "tag:#{key}" unless key =~ /^(tag:|x-private)/ - - if @domain_types.key? key - value, block = @domain_types[key] - return block.call value, result - end - - result - end - - def deserialize o - if klass = Psych.load_tags[o.tag] - instance = klass.allocate - - if instance.respond_to?(:init_with) - coder = Psych::Coder.new(o.tag) - coder.scalar = o.value - instance.init_with coder - end - - return instance - end - - return o.value if o.quoted - return @ss.tokenize(o.value) unless o.tag - - case o.tag - when '!binary', 'tag:yaml.org,2002:binary' - o.value.unpack('m').first - when /^!(?:str|ruby\/string)(?::(.*))?/, 'tag:yaml.org,2002:str' - klass = resolve_class($1) - if klass - klass.allocate.replace o.value - else - o.value - end - when '!ruby/object:BigDecimal' - require 'bigdecimal' - BigDecimal._load o.value - when "!ruby/object:DateTime" - require 'date' - @ss.parse_time(o.value).to_datetime - when "!ruby/object:Complex" - Complex(o.value) - when "!ruby/object:Rational" - Rational(o.value) - when "!ruby/class", "!ruby/module" - resolve_class o.value - when "tag:yaml.org,2002:float", "!float" - Float(@ss.tokenize(o.value)) - when "!ruby/regexp" - o.value =~ /^\/(.*)\/([mixn]*)$/ - source = $1 - options = 0 - lang = nil - ($2 || '').split('').each do |option| - case option - when 'x' then options |= Regexp::EXTENDED - when 'i' then options |= Regexp::IGNORECASE - when 'm' then options |= Regexp::MULTILINE - when 'n' then options |= Regexp::NOENCODING - else lang = option - end - end - Regexp.new(*[source, options, lang].compact) - when "!ruby/range" - args = o.value.split(/([.]{2,3})/, 2).map { |s| - accept Nodes::Scalar.new(s) - } - args.push(args.delete_at(1) == '...') - Range.new(*args) - when /^!ruby\/sym(bol)?:?(.*)?$/ - o.value.to_sym - else - @ss.tokenize o.value - end - end - private :deserialize - - def visit_Psych_Nodes_Scalar o - register o, deserialize(o) - end - - def visit_Psych_Nodes_Sequence o - if klass = Psych.load_tags[o.tag] - instance = klass.allocate - - if instance.respond_to?(:init_with) - coder = Psych::Coder.new(o.tag) - coder.seq = o.children.map { |c| accept c } - instance.init_with coder - end - - return instance - end - - case o.tag - when '!omap', 'tag:yaml.org,2002:omap' - map = register(o, Psych::Omap.new) - o.children.each { |a| - map[accept(a.children.first)] = accept a.children.last - } - map - when /^!(?:seq|ruby\/array):(.*)$/ - klass = resolve_class($1) - list = register(o, klass.allocate) - o.children.each { |c| list.push accept c } - list - else - list = register(o, []) - o.children.each { |c| list.push accept c } - list - end - end - - def visit_Psych_Nodes_Mapping o - return revive(Psych.load_tags[o.tag], o) if Psych.load_tags[o.tag] - return revive_hash({}, o) unless o.tag - - case o.tag - when /^!(?:str|ruby\/string)(?::(.*))?/, 'tag:yaml.org,2002:str' - klass = resolve_class($1) - members = Hash[*o.children.map { |c| accept c }] - string = members.delete 'str' - - if klass - string = klass.allocate.replace string - register(o, string) - end - - init_with(string, members.map { |k,v| [k.to_s.sub(/^@/, ''),v] }, o) - when /^!ruby\/array:(.*)$/ - klass = resolve_class($1) - list = register(o, klass.allocate) - - members = Hash[o.children.map { |c| accept c }.each_slice(2).to_a] - list.replace members['internal'] - - members['ivars'].each do |ivar, v| - list.instance_variable_set ivar, v - end - list - when /^!ruby\/struct:?(.*)?$/ - klass = resolve_class($1) - - if klass - s = register(o, klass.allocate) - - members = {} - struct_members = s.members.map { |x| x.to_sym } - o.children.each_slice(2) do |k,v| - member = accept(k) - value = accept(v) - if struct_members.include?(member.to_sym) - s.send("#{member}=", value) - else - members[member.to_s.sub(/^@/, '')] = value - end - end - init_with(s, members, o) - else - members = o.children.map { |c| accept c } - h = Hash[*members] - Struct.new(*h.map { |k,v| k.to_sym }).new(*h.map { |k,v| v }) - end - - when '!ruby/range' - h = Hash[*o.children.map { |c| accept c }] - register o, Range.new(h['begin'], h['end'], h['excl']) - - when /^!ruby\/exception:?(.*)?$/ - h = Hash[*o.children.map { |c| accept c }] - - e = build_exception((resolve_class($1) || Exception), - h.delete('message')) - init_with(e, h, o) - - when '!set', 'tag:yaml.org,2002:set' - set = Psych::Set.new - @st[o.anchor] = set if o.anchor - o.children.each_slice(2) do |k,v| - set[accept(k)] = accept(v) - end - set - - when '!ruby/object:Complex' - h = Hash[*o.children.map { |c| accept c }] - register o, Complex(h['real'], h['image']) - - when '!ruby/object:Rational' - h = Hash[*o.children.map { |c| accept c }] - register o, Rational(h['numerator'], h['denominator']) - - when /^!ruby\/object:?(.*)?$/ - name = $1 || 'Object' - obj = revive((resolve_class(name) || Object), o) - obj - - when /^!map:(.*)$/, /^!ruby\/hash:(.*)$/ - revive_hash resolve_class($1).new, o - - when '!omap', 'tag:yaml.org,2002:omap' - map = register(o, Psych::Omap.new) - o.children.each_slice(2) do |l,r| - map[accept(l)] = accept r - end - map - - else - revive_hash({}, o) - end - end - - def visit_Psych_Nodes_Document o - accept o.root - end - - def visit_Psych_Nodes_Stream o - o.children.map { |c| accept c } - end - - def visit_Psych_Nodes_Alias o - @st.fetch(o.anchor) { raise BadAlias, "Unknown alias: #{o.anchor}" } - end - - private - def register node, object - @st[node.anchor] = object if node.anchor - object - end - - def revive_hash hash, o - @st[o.anchor] = hash if o.anchor - - o.children.each_slice(2) { |k,v| - key = accept(k) - - if key == '<<' - case v - when Nodes::Alias - hash.merge! accept(v) - when Nodes::Sequence - accept(v).reverse_each do |value| - hash.merge! value - end - else - hash[key] = accept(v) - end - else - hash[key] = accept(v) - end - - } - hash - end - - def revive klass, node - s = klass.allocate - @st[node.anchor] = s if node.anchor - h = Hash[*node.children.map { |c| accept c }] - init_with(s, h, node) - end - - def init_with o, h, node - c = Psych::Coder.new(node.tag) - c.map = h - - if o.respond_to?(:init_with) - o.init_with c - elsif o.respond_to?(:yaml_initialize) - if $VERBOSE - warn "Implementing #{o.class}#yaml_initialize is deprecated, please implement \"init_with(coder)\"" - end - o.yaml_initialize c.tag, c.map - else - h.each { |k,v| o.instance_variable_set(:"@#{k}", v) } - end - o - end - - # Convert +klassname+ to a Class - def resolve_class klassname - return nil unless klassname and not klassname.empty? - - name = klassname - retried = false - - begin - path2class(name) - rescue ArgumentError, NameError => ex - unless retried - name = "Struct::#{name}" - retried = ex - retry - end - raise retried - end - end - end - end -end |