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* lib/prettyprint.rb, lib/pp.rb: convenience methods added.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@2602 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
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akr
parent
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commit
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3 changed files with 297 additions and 258 deletions
166
lib/pp.rb
166
lib/pp.rb
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@ -88,9 +88,21 @@ PP#pp to print the object.
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Object#pretty_print_cycled is used when ((|obj|)) is already
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printed, a.k.a the object reference chain has a cycle.
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--- object_group(obj) { ... }
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is a convenience method which is same as follows:
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group(1, '#<' + obj.class.name, '>') { ... }
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--- comma_breakable
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is a convenience method which is same as follows:
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text ','
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breakable
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= Object
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--- pretty_print(pp)
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is a default pretty printing method for general objects.
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It calls (({pretty_print_instance_variables})) to list instance variables.
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If (({self})) has a customized (redefined) (({inspect})) method,
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the result of (({self.inspect})) is used but it obviously has no
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@ -102,6 +114,13 @@ PP#pp to print the object.
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--- pretty_print_cycled(pp)
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is a default pretty printing method for general objects that are
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detected as part of a cycle.
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--- pretty_print_instance_variables
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is a method to list instance variables used by the default implementation
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of (({pretty_print})).
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This method should return an array of names of instance variables as symbols or strings as:
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(({[:@a, :@b]})).
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=end
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require 'prettyprint'
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@ -172,60 +191,45 @@ class PP < PrettyPrint
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end
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end
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def object_group(obj, &block)
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group(1, '#<' + obj.class.name, '>', &block)
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end
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def comma_breakable
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text ','
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breakable
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end
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def pp_object(obj)
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group {
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text '#<'
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nest(1) {
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text obj.class.name
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text ':'
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text sprintf('0x%x', obj.__id__)
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first = true
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obj.instance_variables.sort.each {|v|
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if first
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first = false
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else
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text ','
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end
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breakable
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group {
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text v
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text '='
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nest(1) {
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breakable ''
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pp(obj.instance_eval v)
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}
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}
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object_group(obj) {
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text sprintf(':0x%x', obj.__id__)
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obj.pretty_print_instance_variables.each {|v|
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v = v.to_s if Symbol === v
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text ',' unless first?
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breakable
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text v
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text '='
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group(1) {
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breakable ''
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pp(obj.instance_eval v)
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}
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}
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text '>'
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}
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end
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def pp_hash(obj)
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group {
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text '{'
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nest(1) {
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first = true
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obj.each {|k, v|
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if first
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first = false
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else
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text ","
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breakable
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end
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group {
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pp k
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text '=>'
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nest(1) {
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group {
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breakable ''
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pp v
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}
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}
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group(1, '{', '}') {
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obj.each {|k, v|
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comma_breakable unless first?
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group {
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pp k
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text '=>'
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group(1) {
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breakable ''
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pp v
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}
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}
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}
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text '}'
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}
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end
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@ -271,6 +275,10 @@ class PP < PrettyPrint
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pp.breakable
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pp.text sprintf("...>")
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end
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def pretty_print_instance_variables
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instance_variables.sort
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end
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end
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end
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@ -284,20 +292,12 @@ end
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class Array
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def pretty_print(pp)
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pp.text "["
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pp.nest(1) {
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first = true
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pp.group(1, '[', ']') {
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self.each {|v|
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if first
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first = false
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else
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pp.text ","
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pp.breakable
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end
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pp.comma_breakable unless pp.first?
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pp.pp v
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}
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}
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pp.text "]"
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end
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def pretty_print_cycled(pp)
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@ -323,27 +323,18 @@ end
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class Struct
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def pretty_print(pp)
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pp.text sprintf("#<%s", self.class.name)
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pp.nest(1) {
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first = true
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pp.object_group(self) {
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self.members.each {|member|
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if first
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first = false
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else
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pp.text ","
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end
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pp.text "," unless pp.first?
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pp.breakable
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pp.group {
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pp.text member.to_s
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pp.text '='
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pp.nest(1) {
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pp.breakable ''
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pp.pp self[member]
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}
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pp.text member.to_s
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pp.text '='
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pp.group(1) {
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pp.breakable ''
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pp.pp self[member]
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}
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}
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}
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pp.text ">"
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end
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def pretty_print_cycled(pp)
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@ -365,12 +356,10 @@ class File
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class Stat
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def pretty_print(pp)
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require 'etc.so'
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pp.nest(1) {
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pp.text "#<"
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pp.text self.class.name
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pp.breakable; pp.text sprintf("dev=0x%x", self.dev); pp.text ','
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pp.breakable; pp.text "ino="; pp.pp self.ino; pp.text ','
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pp.object_group(self) {
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pp.breakable
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pp.text sprintf("dev=0x%x", self.dev); pp.comma_breakable
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pp.text "ino="; pp.pp self.ino; pp.comma_breakable
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pp.group {
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m = self.mode
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pp.text sprintf("mode=0%o", m)
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@ -389,10 +378,9 @@ class File
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(m & 0002 == 0 ? ?- : ?w),
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(m & 0001 == 0 ? (m & 01000 == 0 ? ?- : ?T) :
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(m & 01000 == 0 ? ?x : ?t)))
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pp.text ','
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}
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pp.breakable; pp.text "nlink="; pp.pp self.nlink; pp.text ','
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pp.breakable
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pp.comma_breakable
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pp.text "nlink="; pp.pp self.nlink; pp.comma_breakable
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pp.group {
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pp.text "uid="; pp.pp self.uid
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begin
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@ -400,9 +388,8 @@ class File
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pp.breakable; pp.text "(#{name})"
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rescue ArgumentError
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end
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pp.text ','
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}
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pp.breakable
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pp.comma_breakable
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pp.group {
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pp.text "gid="; pp.pp self.gid
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begin
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@ -410,39 +397,34 @@ class File
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pp.breakable; pp.text "(#{name})"
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rescue ArgumentError
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end
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pp.text ','
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}
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pp.breakable
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pp.comma_breakable
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pp.group {
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pp.text sprintf("rdev=0x%x", self.rdev)
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pp.breakable
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pp.text sprintf('(%d, %d)', self.rdev_major, self.rdev_minor)
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pp.text ','
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}
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pp.breakable; pp.text "size="; pp.pp self.size; pp.text ','
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pp.breakable; pp.text "blksize="; pp.pp self.blksize; pp.text ','
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pp.breakable; pp.text "blocks="; pp.pp self.blocks; pp.text ','
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pp.breakable
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pp.comma_breakable
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pp.text "size="; pp.pp self.size; pp.comma_breakable
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pp.text "blksize="; pp.pp self.blksize; pp.comma_breakable
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pp.text "blocks="; pp.pp self.blocks; pp.comma_breakable
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pp.group {
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t = self.atime
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pp.text "atime="; pp.pp t
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pp.breakable; pp.text "(#{t.tv_sec})"
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pp.text ','
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}
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pp.breakable
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pp.comma_breakable
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pp.group {
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t = self.mtime
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pp.text "mtime="; pp.pp t
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pp.breakable; pp.text "(#{t.tv_sec})"
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pp.text ','
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}
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pp.breakable
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pp.comma_breakable
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pp.group {
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t = self.ctime
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pp.text "ctime="; pp.pp t
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pp.breakable; pp.text "(#{t.tv_sec})"
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}
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pp.text ">"
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}
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end
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end
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