Class: YARD::Logger

### Home Classes Methods

### In Files

- lib/yard/logging.rb

### Parent

Logger

### Methods

- ::instance
- ::new
- #<<
- #backtrace
- #capture
- #clear_progress
- #debug
- #enter_level
- #io
- #io=
- #print
- #print_no_newline
- #progress
- #puts
- #show_backtraces
- #show_progress
- #warn_no_continuations

### Files

- LICENSE.txt
- MIT.txt

### Class/Module Index

Quicksearch

- YARD
- YARD::CLI
- YARD::CLI::Command
- YARD::CLI::CommandParser
- YARD::CLI::Config
- YARD::CLI::Diff
- YARD::CLI::Display
- YARD::CLI::Gems
- YARD::CLI::Graph
- YARD::CLI::GraphOptions
- YARD::CLI::Help
- YARD::CLI::I18n
- YARD::CLI::List
- YARD::CLI::MarkupTypes
- YARD::CLI::Server
- YARD::CLI::Stats
- YARD::CLI::YRI
- YARD::CLI::Yardoc
- YARD::CLI::YardocOptions
- YARD::CLI::YardoptsCommand
- YARD::CodeObjects
- YARD::CodeObjects::Base
- YARD::CodeObjects::ClassObject
- YARD::CodeObjects::ClassVariableObject
- YARD::CodeObjects::CodeObjectList
- YARD::CodeObjects::ConstantObject
- YARD::CodeObjects::ExtendedMethodObject
- YARD::CodeObjects::ExtraFileObject
- YARD::CodeObjects::MacroObject
- YARD::CodeObjects::MethodObject
- YARD::CodeObjects::ModuleObject
- YARD::CodeObjects::NamespaceObject
- YARD::CodeObjects::Proxy
- YARD::CodeObjects::ProxyMethodError
- YARD::CodeObjects::RootObject
- YARD::Config
- YARD::Docstring
- YARD::DocstringParser
- YARD::Handlers
- YARD::Handlers::Base
- YARD::Handlers::C
- YARD::Handlers::C::AliasHandler
- YARD::Handlers::C::AttributeHandler
- YARD::Handlers::C::Base
- YARD::Handlers::C::ClassHandler
- YARD::Handlers::C::ConstantHandler
- YARD::Handlers::C::HandlerMethods
- YARD::Handlers::C::InitHandler
- YARD::Handlers::C::MethodHandler
- YARD::Handlers::C::MixinHandler
- YARD::Handlers::C::ModuleHandler
- YARD::Handlers::C::OverrideCommentHandler
- YARD::Handlers::C::PathHandler
- YARD::Handlers::C::StructHandler
- YARD::Handlers::C::SymbolHandler
- YARD::Handlers::HandlerAborted
- YARD::Handlers::NamespaceMissingError
- YARD::Handlers::Processor
- YARD::Handlers::Ruby
- YARD::Handlers::Ruby::AliasHandler
- YARD::Handlers::Ruby::AttributeHandler
- YARD::Handlers::Ruby::Base
- YARD::Handlers::Ruby::ClassConditionHandler
- YARD::Handlers::Ruby::ClassHandler
- YARD::Handlers::Ruby::ClassVariableHandler
- YARD::Handlers::Ruby::CommentHandler
- YARD::Handlers::Ruby::ConstantHandler
- YARD::Handlers::Ruby::DSLHandler
- YARD::Handlers::Ruby::DSLHandlerMethods
- YARD::Handlers::Ruby::ExceptionHandler
- YARD::Handlers::Ruby::ExtendHandler
- YARD::Handlers::Ruby::HandlesExtension
- YARD::Handlers::Ruby::Legacy
- YARD::Handlers::Ruby::Legacy::AliasHandler
- YARD::Handlers::Ruby::Legacy::AttributeHandler
- YARD::Handlers::Ruby::Legacy::Base
- YARD::Handlers::Ruby::Legacy::ClassConditionHandler
- YARD::Handlers::Ruby::Legacy::ClassHandler
- YARD::Handlers::Ruby::Legacy::ClassVariableHandler
- YARD::Handlers::Ruby::Legacy::CommentHandler
- YARD::Handlers::Ruby::Legacy::ConstantHandler
- YARD::Handlers::Ruby::Legacy::DSLHandler
- YARD::Handlers::Ruby::Legacy::ExceptionHandler
- YARD::Handlers::Ruby::Legacy::ExtendHandler
- YARD::Handlers::Ruby::Legacy::MethodHandler
- YARD::Handlers::Ruby::Legacy::MixinHandler
- YARD::Handlers::Ruby::Legacy::ModuleFunctionHandler
- YARD::Handlers::Ruby::Legacy::ModuleHandler
- YARD::Handlers::Ruby::Legacy::PrivateClassMethodHandler
- YARD::Handlers::Ruby::Legacy::PrivateConstantHandler
- YARD::Handlers::Ruby::Legacy::VisibilityHandler
- YARD::Handlers::Ruby::Legacy::YieldHandler
- YARD::Handlers::Ruby::MethodCallWrapper
- YARD::Handlers::Ruby::MethodConditionHandler
- YARD::Handlers::Ruby::MethodHandler
- YARD::Handlers::Ruby::MixinHandler
- YARD::Handlers::Ruby::ModuleFunctionHandler
- YARD::Handlers::Ruby::ModuleHandler
- YARD::Handlers::Ruby::PrivateClassMethodHandler
- YARD::Handlers::Ruby::PrivateConstantHandler
- YARD::Handlers::Ruby::StructHandlerMethods
- YARD::Handlers::Ruby::TestNodeWrapper
- YARD::Handlers::Ruby::VisibilityHandler
- YARD::Handlers::Ruby::YieldHandler
- YARD::I18n
- YARD::I18n::Locale
- YARD::I18n::Message
- YARD::I18n::Messages
- YARD::I18n::POParser
- YARD::I18n::PotGenerator
- YARD::I18n::Text
- YARD::Logger
- YARD::Options
- YARD::Parser
- YARD::Parser::Base
- YARD::Parser::C
- YARD::Parser::C::BodyStatement
- YARD::Parser::C::CParser
- YARD::Parser::C::Comment
- YARD::Parser::C::CommentParser
- YARD::Parser::C::Statement
- YARD::Parser::C::ToplevelStatement
- YARD::Parser::OrderedParser
- YARD::Parser::ParserSyntaxError
- YARD::Parser::Ruby
- YARD::Parser::Ruby::AstNode
- YARD::Parser::Ruby::ClassNode
- YARD::Parser::Ruby::CommentNode
- YARD::Parser::Ruby::ConditionalNode
- YARD::Parser::Ruby::KeywordNode
- YARD::Parser::Ruby::Legacy
- YARD::Parser::Ruby::Legacy::RubyLex
- YARD::Parser::Ruby::Legacy::RubyLex::BufferedReader
- YARD::Parser::Ruby::Legacy::RubyParser
- YARD::Parser::Ruby::Legacy::RubyToken
- YARD::Parser::Ruby::Legacy::RubyToken::TkBlockContents
- YARD::Parser::Ruby::Legacy::RubyToken::TkError
- YARD::Parser::Ruby::Legacy::RubyToken::TkId
- YARD::Parser::Ruby::Legacy::RubyToken::TkKW
- YARD::Parser::Ruby::Legacy::RubyToken::TkNode
- YARD::Parser::Ruby::Legacy::RubyToken::TkOPASGN
- YARD::Parser::Ruby::Legacy::RubyToken::TkOp
- YARD::Parser::Ruby::Legacy::RubyToken::TkStatementEnd
- YARD::Parser::Ruby::Legacy::RubyToken::TkUnknownChar
- YARD::Parser::Ruby::Legacy::RubyToken::TkVal
- YARD::Parser::Ruby::Legacy::RubyToken::TkWhitespace
- YARD::Parser::Ruby::Legacy::RubyToken::Token
- YARD::Parser::Ruby::Legacy::Statement
- YARD::Parser::Ruby::Legacy::StatementList
- YARD::Parser::Ruby::Legacy::TokenList
- YARD::Parser::Ruby::LiteralNode
- YARD::Parser::Ruby::LoopNode
- YARD::Parser::Ruby::MethodCallNode
- YARD::Parser::Ruby::MethodDefinitionNode
- YARD::Parser::Ruby::ModuleNode
- YARD::Parser::Ruby::ParameterNode
- YARD::Parser::Ruby::ReferenceNode
- YARD::Parser::Ruby::RipperParser
- YARD::Parser::Ruby::RubyParser
- YARD::Parser::SourceParser
- YARD::Parser::UndocumentableError
- YARD::Rake
- YARD::Rake::YardocTask
- YARD::Registry
- YARD::RegistryStore
- YARD::Serializers
- YARD::Serializers::Base
- YARD::Serializers::FileSystemSerializer
- YARD::Serializers::ProcessSerializer
- YARD::Serializers::StdoutSerializer
- YARD::Serializers::YardocSerializer
- YARD::Server
- YARD::Server::Adapter
- YARD::Server::Commands
- YARD::Server::Commands::Base
- YARD::Server::Commands::DisplayFileCommand
- YARD::Server::Commands::DisplayObjectCommand
- YARD::Server::Commands::FramesCommand
- YARD::Server::Commands::LibraryCommand
- YARD::Server::Commands::LibraryIndexCommand
- YARD::Server::Commands::LibraryOptions
- YARD::Server::Commands::ListCommand
- YARD::Server::Commands::SearchCommand
- YARD::Server::Commands::StaticFileCommand
- YARD::Server::DocServerHelper
- YARD::Server::DocServerSerializer
- YARD::Server::FinishRequest
- YARD::Server::LibraryNotPreparedError
- YARD::Server::LibraryVersion
- YARD::Server::NotFoundError
- YARD::Server::RackAdapter
- YARD::Server::RackMiddleware
- YARD::Server::Router
- YARD::Server::StaticCaching
- YARD::Server::WebrickAdapter
- YARD::Server::WebrickServlet
- YARD::StubProxy
- YARD::Tags
- YARD::Tags::AttributeDirective
- YARD::Tags::DefaultFactory
- YARD::Tags::DefaultTag
- YARD::Tags::Directive
- YARD::Tags::EndGroupDirective
- YARD::Tags::GroupDirective
- YARD::Tags::Library
- YARD::Tags::MacroDirective
- YARD::Tags::MethodDirective
- YARD::Tags::OptionTag
- YARD::Tags::OverloadTag
- YARD::Tags::ParseDirective
- YARD::Tags::RefTag
- YARD::Tags::RefTagList
- YARD::Tags::ScopeDirective
- YARD::Tags::Tag
- YARD::Tags::TagFormatError
- YARD::Tags::VisibilityDirective
- YARD::Templates
- YARD::Templates::Engine
- YARD::Templates::ErbCache
- YARD::Templates::Helpers
- YARD::Templates::Helpers::BaseHelper
- YARD::Templates::Helpers::FilterHelper
- YARD::Templates::Helpers::HtmlHelper
- YARD::Templates::Helpers::HtmlSyntaxHighlightHelper
- YARD::Templates::Helpers::Markup
- YARD::Templates::Helpers::Markup::RDocMarkdown
- YARD::Templates::Helpers::Markup::RDocMarkup
- YARD::Templates::Helpers::Markup::RDocMarkup::RDocMarkup
- YARD::Templates::Helpers::Markup::RDocMarkup::RDocMarkup::RDocMarkupToHtml
- YARD::Templates::Helpers::Markup::RDocMarkup::RDocMarkupToHtml
- YARD::Templates::Helpers::MarkupHelper
- YARD::Templates::Helpers::MethodHelper
- YARD::Templates::Helpers::ModuleHelper
- YARD::Templates::Helpers::TextHelper
- YARD::Templates::Helpers::UMLHelper
- YARD::Templates::Section
- YARD::Templates::Template
- YARD::Templates::Template::ClassMethods
- YARD::Templates::TemplateOptions
- YARD::Verifier
- Gem
- Gem::DocManager
- Gem::SourceIndex
- Gem::Specification
- Rack
- Rack::Request
- WEBrick
- WEBrick::HTTPRequest
- Array
- File
- Hash
- Insertion
- Module
- Object
- String
- SymbolHash

No matching classes.

# YARD::Logger

Handles console logging for info, warnings and errors. Uses the stdlib Logger class in Ruby for all the backend logic.

### Constants

PROGRESS_INDICATORS

  The list of characters displayed beside the progress bar to indicate "movement". @since 0.8.2

### Attributes

show_backtraces[W]
show_progress[W]

### Public Class Methods

instance(pipe = STDOUT) click to toggle source

The logger instance @return [Logger] the logger instance

    # File lib/yard/logging.rb, line 36
    def self.instance(pipe = STDOUT)
      @logger ||= new(pipe)
    end

new(pipe, *args) click to toggle source

Creates a new logger

    # File lib/yard/logging.rb, line 41
    def initialize(pipe, *args)
      super(pipe, *args)
      self.io = pipe
      self.show_backtraces = true
      self.show_progress = false
      self.level = WARN
      self.formatter = method(:format_log)
      @progress_indicator = 0
      @mutex = Mutex.new
    end

### Public Instance Methods

<<(msg = '') click to toggle source
Also aliased as: print_no_newline
Alias for: print
backtrace(exc, level_meth = :error) click to toggle source

Prints the backtrace `exc` to the logger as error data.

@param [Array<String>] exc the backtrace list @param [Symbol] level_meth the level to log backtrace at @return [void]

    # File lib/yard/logging.rb, line 139
    def backtrace(exc, level_meth = :error)
      return unless show_backtraces
      send(level_meth, "#{exc.class.class_name}: #{exc.message}")
      send(level_meth, "Stack trace:" +
        exc.backtrace[0..5].map {|x| "\n\t#{x}" }.join + "\n")
    end

capture(msg, nontty_log = :debug, &block) click to toggle source

Captures the duration of a block of code for benchmark analysis. Also calls {progress} on the message to display it to the user.

@todo Implement capture storage for reporting of benchmarks @param [String] msg the message to display @param [Symbol, nil] nontty_log the level to log as if the output

    stream is not a TTY. Use +nil+ for no alternate logging.

@yield a block of arbitrary code to benchmark @return [void]

    # File lib/yard/logging.rb, line 68
    def capture(msg, nontty_log = :debug, &block)
      progress(msg, nontty_log)
      yield
    ensure
      clear_progress
    end

clear_progress() click to toggle source

Clears the progress indicator in the TTY display. @return [void] @since 0.8.2

    # File lib/yard/logging.rb, line 106
    def clear_progress
      return unless show_progress
      print_no_newline("\e[?25h\e[2K")
      @progress_msg = nil
    end

debug(*args) click to toggle source

Changes the debug level to DEBUG if $DEBUG is set and writes a debugging message.

    # File lib/yard/logging.rb, line 54
    def debug(*args)
      self.level = DEBUG if $DEBUG
      super
    end

enter_level(new_level = level, &block) click to toggle source

Sets the logger level for the duration of the block

@example

    log.enter_level(Logger::ERROR) do
      YARD.parse_string "def x; end"
    end

@param [Fixnum] new_level the logger level for the duration of the block.

    values can be found in Ruby's Logger class.

@yield the block with the logger temporarily set to `new_level`

    # File lib/yard/logging.rb, line 164
    def enter_level(new_level = level, &block)
      old_level, self.level = level, new_level
      yield
      self.level = old_level
    end

io() click to toggle source

@return [IO] the IO object being logged to @since 0.8.2

    # File lib/yard/logging.rb, line 15
    def io; @logdev end

io=(pipe) click to toggle source

    # File lib/yard/logging.rb, line 16
    def io=(pipe) @logdev = pipe end

print(msg = '') click to toggle source

Displays an unformatted line to the logger output stream. @param [String] msg the message to display @return [void] @since 0.8.2

    # File lib/yard/logging.rb, line 128
    def print(msg = '')
      clear_line
      print_no_newline(msg)
    end

Also aliased as: <<
print_no_newline(msg = '') click to toggle source
Alias for: <<
progress(msg, nontty_log = :debug) click to toggle source

Displays a progress indicator for a given message. This progress report is only displayed on TTY displays, otherwise the message is passed to the `nontty_log` level.

@param [String] msg the message to log @param [Symbol, nil] nontty_log the level to log as if the output

    stream is not a TTY. Use +nil+ for no alternate logging.

@return [void] @since 0.8.2

    # File lib/yard/logging.rb, line 84
    def progress(msg, nontty_log = :debug)
      send(nontty_log, msg) if nontty_log
      return unless show_progress
      icon = ""
      if defined?(::Encoding)
        icon = PROGRESS_INDICATORS[@progress_indicator] + " "
      end
      @mutex.synchronize do
        print("\e[2K\e[?25l\e[1m#{icon}#{msg}\e[0m\r")
        @progress_msg = msg
        @progress_indicator += 1
        @progress_indicator = PROGRESS_INDICATORS.size
      end
      Thread.new do
        sleep(0.05)
        progress(msg + ".", nil) if @progress_msg == msg
      end
    end

puts(msg = '') click to toggle source

Displays an unformatted line to the logger output stream, adding a newline. @param [String] msg the message to display @return [void] @since 0.8.2

    # File lib/yard/logging.rb, line 117
    def puts(msg = '')
      print("#{msg}\n")
    end

show_backtraces() click to toggle source

@return [Boolean] whether backtraces should be shown (by default

    this is on).

    # File lib/yard/logging.rb, line 20
    def show_backtraces; @show_backtraces || level == DEBUG end

show_progress() click to toggle source

@return [Boolean] whether progress indicators should be shown when

    logging CLIs (by default this is off).

    # File lib/yard/logging.rb, line 25
    def show_progress
      return false if YARD.ruby18? # threading is too ineffective for progress support
      return false if YARD.windows? # windows has poor ANSI support
      return false unless io.tty? # no TTY support on IO
      return false unless level > INFO # no progress in verbose/debug modes
      @show_progress
    end

warn_no_continuations() click to toggle source

Warns that the Ruby environment does not support continuations. Applies to JRuby, Rubinius and MacRuby. This warning will only display once per Ruby process.

@deprecated Continuations are no longer needed by YARD 0.8.0+. @return [void]

    # File lib/yard/logging.rb, line 152
    def warn_no_continuations
    end

[Validate]

Generated with the Darkfish Rdoc Generator 2.