Class: YARD::CodeObjects::Base Abstract
- Inherits:
-
Object
- Object
- YARD::CodeObjects::Base
- Defined in:
- lib/yard/code_objects/base.rb
Overview
Base
is the superclass of all code objects recognized by YARD. A code object is any entity in the Ruby language (class, method, module). A DSL might subclass Base
to create a new custom object representing a new entity type.
Registry Integration
Any created object associated with a namespace is immediately registered with the registry. This allows the Registry to act as an identity map to ensure that no object is represented by more than one Ruby object in memory. A unique #path is essential for this identity map to work correctly.
Custom Attributes
Code objects allow arbitrary custom attributes to be set using the #[]= assignment method.
Namespaces
There is a special type of object called a “namespace”. These are subclasses of the NamespaceObject and represent Ruby entities that can have objects defined within them. Classically these are modules and classes, though a DSL might create a custom NamespaceObject to describe a specific set of objects.
Direct Known Subclasses
ClassVariableObject, ConstantObject, MacroObject, MethodObject, NamespaceObject
Instance Attribute Summary collapse
-
#docstring ⇒ Docstring
The documentation string associated with the object.
-
#dynamic ⇒ Boolean
Marks whether or not the method is conditionally defined at runtime.
-
#files ⇒ Array<String>
readonly
The files the object was defined in.
-
#group ⇒ String
The group this object is associated with.
-
#namespace ⇒ NamespaceObject
(also: #parent)
The namespace the object is defined in.
-
#signature ⇒ String
The one line signature representing an object.
-
#source ⇒ String?
The source code associated with the object.
-
#source_type ⇒ Symbol
Language of the source code associated with the object.
-
#visibility ⇒ Symbol
The visibility of an object (:public, :private, :protected).
Class Method Summary collapse
-
.===(other) ⇒ Boolean
Compares the class with subclasses.
-
.new(namespace, name, *args) {|obj| ... } ⇒ Base
Allocates a new code object.
Instance Method Summary collapse
-
#[](key) ⇒ Object?
Accesses a custom attribute on the object.
-
#[]=(key, value) ⇒ void
Sets a custom attribute on the object.
-
#add_file(file, line = nil, has_comments = false) ⇒ Object
Associates a file with a code object, optionally adding the line where it was defined.
-
#dynamic? ⇒ Boolean
Is the object defined conditionally at runtime?.
-
#equal?(other) ⇒ Boolean
(also: #==, #eql?)
Tests if another object is equal to this, including a proxy.
-
#file ⇒ String
Returns the filename the object was first parsed at, taking definitions with docstrings first.
-
#format(options = {}) ⇒ String
Renders the object using the templating system.
-
#format_source(source) ⇒ String
protected
Formats source code by removing leading indentation.
-
#has_tag?(name) ⇒ Boolean
Tests if the #docstring has a tag.
-
#hash ⇒ Integer
The object’s hash value (for equality checking).
-
#initialize(namespace, name, *args) {|self| ... } ⇒ Base
constructor
Creates a new code object.
-
#inspect ⇒ String
Inspects the object, returning the type and path.
-
#line ⇒ Fixnum?
Returns the line the object was first parsed at (or nil).
- #method_missing(meth, *args, &block) ⇒ Object
-
#name(prefix = false) ⇒ Symbol, String
The name of the object.
-
#path ⇒ String
(also: #to_s)
Represents the unique path of the object.
-
#relative_path(other) ⇒ String
The shortest relative path from this object to
other
. -
#root? ⇒ Boolean
Whether or not this object is a RootObject.
-
#sep ⇒ String
protected
Override this method with a custom component separator.
-
#tag(name) ⇒ Object
Gets a tag from the #docstring.
-
#tags(name = nil) ⇒ Object
Gets a list of tags from the #docstring.
-
#to_ary ⇒ nil
This object does not turn into an array.
-
#type ⇒ Symbol
Default type is the lowercase class name without the “Object” suffix.
Constructor Details
#initialize(namespace, name, *args) {|self| ... } ⇒ Base
Creates a new code object
207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 |
# File 'lib/yard/code_objects/base.rb', line 207 def initialize(namespace, name, *args, &block) if namespace && namespace != :root && !namespace.is_a?(NamespaceObject) && !namespace.is_a?(Proxy) raise ArgumentError, "Invalid namespace object: #{namespace}" end @files = [] @current_file_has_comments = false @name = name.to_sym @source_type = :ruby @visibility = :public @tags = [] @docstring = Docstring.new('', self) @namespace = nil self.namespace = namespace yield(self) if block_given? end |
Dynamic Method Handling
This class handles dynamic methods through the method_missing method
#dynamic_attr_name ⇒ Object #dynamic_attr_name=(value) ⇒ Object
325 326 327 328 329 330 331 332 333 |
# File 'lib/yard/code_objects/base.rb', line 325 def method_missing(meth, *args, &block) if meth.to_s =~ /=$/ self[meth.to_s[0..-2]] = args.first elsif instance_variable_get("@#{meth}") self[meth] else super end end |
Instance Attribute Details
#docstring ⇒ Docstring
The documentation string associated with the object
141 142 143 |
# File 'lib/yard/code_objects/base.rb', line 141 def docstring @docstring end |
#dynamic ⇒ Boolean
Marks whether or not the method is conditionally defined at runtime
145 146 147 |
# File 'lib/yard/code_objects/base.rb', line 145 def dynamic @dynamic end |
#files ⇒ Array<String> (readonly)
The files the object was defined in. To add a file, use #add_file.
115 116 117 |
# File 'lib/yard/code_objects/base.rb', line 115 def files @files end |
#group ⇒ String
Returns the group this object is associated with.
149 150 151 |
# File 'lib/yard/code_objects/base.rb', line 149 def group @group end |
#namespace ⇒ NamespaceObject Also known as: parent
The namespace the object is defined in. If the object is in the top level namespace, this is Registry.root
120 121 122 |
# File 'lib/yard/code_objects/base.rb', line 120 def namespace @namespace end |
#signature ⇒ String
The one line signature representing an object. For a method, this will be of the form “def meth(arguments…)”. This is usually the first source line.
137 138 139 |
# File 'lib/yard/code_objects/base.rb', line 137 def signature @signature end |
#source ⇒ String?
The source code associated with the object
124 125 126 |
# File 'lib/yard/code_objects/base.rb', line 124 def source @source end |
#source_type ⇒ Symbol
Language of the source code associated with the object. Defaults to :ruby
.
130 131 132 |
# File 'lib/yard/code_objects/base.rb', line 130 def source_type @source_type end |
#visibility ⇒ Symbol
Returns the visibility of an object (:public, :private, :protected).
156 157 158 |
# File 'lib/yard/code_objects/base.rb', line 156 def visibility @visibility end |
Class Method Details
.===(other) ⇒ Boolean
Compares the class with subclasses
188 189 190 |
# File 'lib/yard/code_objects/base.rb', line 188 def ===(other) other.is_a?(self) end |
.new(namespace, name, *args) {|obj| ... } ⇒ Base
Allocates a new code object
164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 |
# File 'lib/yard/code_objects/base.rb', line 164 def new(namespace, name, *args, &block) raise ArgumentError, "invalid empty object name" if name.to_s.empty? if namespace.is_a?(ConstantObject) namespace = Proxy.new(namespace.namespace, namespace.value) end if name.to_s[0,2] == NSEP name = name.to_s[2..-1] namespace = Registry.root elsif name =~ /(?:#{NSEPQ})([^:]+)$/ return new(Proxy.new(namespace, $`), $1, *args, &block) end obj = super(namespace, name, *args) existing_obj = Registry.at(obj.path) obj = existing_obj if existing_obj && existing_obj.class == self yield(obj) if block_given? obj end |
Instance Method Details
#[](key) ⇒ Object?
Accesses a custom attribute on the object
295 296 297 298 299 300 301 |
# File 'lib/yard/code_objects/base.rb', line 295 def [](key) if respond_to?(key) send(key) elsif instance_variable_defined?("@#{key}") instance_variable_get("@#{key}") end end |
#[]=(key, value) ⇒ void
This method returns an undefined value.
Sets a custom attribute on the object
308 309 310 311 312 313 314 |
# File 'lib/yard/code_objects/base.rb', line 308 def []=(key, value) if respond_to?("#{key}=") send("#{key}=", value) else instance_variable_set("@#{key}", value) end end |
#add_file(file, line = nil, has_comments = false) ⇒ Object
Associates a file with a code object, optionally adding the line where it was defined. By convention, ‘<stdin>’ should be used to associate code that comes form standard input.
243 244 245 246 247 248 249 250 251 252 253 |
# File 'lib/yard/code_objects/base.rb', line 243 def add_file(file, line = nil, has_comments = false) raise(ArgumentError, "file cannot be nil or empty") if file.nil? || file == '' obj = [file.to_s, line] return if files.include?(obj) if has_comments && !@current_file_has_comments @current_file_has_comments = true @files.unshift(obj) else @files << obj # back of the line end end |
#dynamic? ⇒ Boolean
Is the object defined conditionally at runtime?
153 |
# File 'lib/yard/code_objects/base.rb', line 153 def dynamic?; @dynamic end |
#equal?(other) ⇒ Boolean Also known as: ==, eql?
Tests if another object is equal to this, including a proxy
275 276 277 278 279 280 281 |
# File 'lib/yard/code_objects/base.rb', line 275 def equal?(other) if other.is_a?(Base) || other.is_a?(Proxy) path == other.path else super end end |
#file ⇒ String
Returns the filename the object was first parsed at, taking definitions with docstrings first.
259 260 261 |
# File 'lib/yard/code_objects/base.rb', line 259 def file @files.first ? @files.first[0] : nil end |
#format(options = {}) ⇒ String
Renders the object using the templating system.
440 441 442 443 |
# File 'lib/yard/code_objects/base.rb', line 440 def format( = {}) .merge!(:object => self) Templates::Engine.render() end |
#format_source(source) ⇒ String (protected)
Formats source code by removing leading indentation
505 506 507 508 509 510 |
# File 'lib/yard/code_objects/base.rb', line 505 def format_source(source) source.chomp! last = source.split(/\r?\n/).last indent = last ? last[/^([ \t]*)/, 1].length : 0 source.gsub(/^[ \t]{#{indent}}/, '') end |
#has_tag?(name) ⇒ Boolean
Tests if the #docstring has a tag
485 |
# File 'lib/yard/code_objects/base.rb', line 485 def has_tag?(name); docstring.has_tag?(name) end |
#hash ⇒ Integer
Returns the object’s hash value (for equality checking).
286 |
# File 'lib/yard/code_objects/base.rb', line 286 def hash; path.hash end |
#inspect ⇒ String
Inspects the object, returning the type and path
447 448 449 |
# File 'lib/yard/code_objects/base.rb', line 447 def inspect "#<yardoc #{type} #{path}>" end |
#line ⇒ Fixnum?
Returns the line the object was first parsed at (or nil)
267 268 269 |
# File 'lib/yard/code_objects/base.rb', line 267 def line @files.first ? @files.first[1] : nil end |
#name(prefix = false) ⇒ Symbol, String
The name of the object
231 232 233 |
# File 'lib/yard/code_objects/base.rb', line 231 def name(prefix = false) prefix ? @name.to_s : @name end |
#path ⇒ String Also known as: to_s
Represents the unique path of the object. The default implementation joins the path of #namespace with #name via the value of #sep. Custom code objects should ensure that the path is unique to the code object by either overriding #sep or this method.
395 396 397 398 399 400 401 |
# File 'lib/yard/code_objects/base.rb', line 395 def path @path ||= if parent && !parent.root? [parent.path, name.to_s].join(sep) else name.to_s end end |
#relative_path(other) ⇒ String
Returns the shortest relative path from this object to other
.
407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 |
# File 'lib/yard/code_objects/base.rb', line 407 def relative_path(other) other = Registry.at(other) if String === other && Registry.at(other) same_parent = false if other.respond_to?(:path) same_parent = other.parent == parent other = other.path end return other unless namespace common = [path, other].join(" ").match(/^(\S*)\S*(?: \1\S*)*$/)[1] common = path unless common =~ /(\.|::|#)$/ common = common.sub(/(\.|::|#)[^:#\.]*?$/, '') if same_parent if %w(. :).include?(common[-1,1]) || other[common.size,1] == '#' suffix = '' else suffix = '(::|\.)' end result = other.sub(/^#{Regexp.quote common}#{suffix}/, '') result.empty? ? other : result end |
#root? ⇒ Boolean
Returns whether or not this object is a RootObject.
488 |
# File 'lib/yard/code_objects/base.rb', line 488 def root?; false end |
#sep ⇒ String (protected)
Override this method with a custom component separator. For instance, MethodObject implements sep as ‘#’ or ‘.’ (depending on if the method is instance or class respectively). #path depends on this value to generate the full path in the form: namespace.path + sep + name
499 |
# File 'lib/yard/code_objects/base.rb', line 499 def sep; NSEP end |
#tag(name) ⇒ Object
Gets a tag from the #docstring
477 |
# File 'lib/yard/code_objects/base.rb', line 477 def tag(name); docstring.tag(name) end |
#tags(name = nil) ⇒ Object
Gets a list of tags from the #docstring
481 |
# File 'lib/yard/code_objects/base.rb', line 481 def (name = nil); docstring.(name) end |
#to_ary ⇒ nil
Returns this object does not turn into an array.
289 |
# File 'lib/yard/code_objects/base.rb', line 289 def to_ary; nil end |
#type ⇒ Symbol
Default type is the lowercase class name without the “Object” suffix. Override this method to provide a custom object type
382 383 384 |
# File 'lib/yard/code_objects/base.rb', line 382 def type self.class.name.split(/#{NSEPQ}/).last.gsub(/Object$/, '').downcase.to_sym end |