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# TODO: the documentation in here is terrible.
#
# Each exception needs a brief description and the scenarios where it is
# likely to be raised
##
# Base exception class for RubyGems. All exception raised by RubyGems are a
# subclass of this one.
class Gem::Exception < RuntimeError
##
#--
# TODO: remove in RubyGems 3, nobody sets this
attr_accessor :source_exception # :nodoc:
end
class Gem::CommandLineError < Gem::Exception; end
class Gem::DependencyError < Gem::Exception; end
class Gem::DependencyRemovalException < Gem::Exception; end
##
# Raised by Gem::Resolver when a Gem::Dependency::Conflict reaches the
# toplevel. Indicates which dependencies were incompatible through #conflict
# and #conflicting_dependencies
class Gem::DependencyResolutionError < Gem::DependencyError
attr_reader :conflict
def initialize conflict
@conflict = conflict
a, b = conflicting_dependencies
super "conflicting dependencies #{a} and #{b}\n#{@conflict.explanation}"
end
def conflicting_dependencies
@conflict.conflicting_dependencies
end
end
##
# Raised when attempting to uninstall a gem that isn't in GEM_HOME.
class Gem::GemNotInHomeException < Gem::Exception
attr_accessor :spec
end
class Gem::DocumentError < Gem::Exception; end
##
# Potentially raised when a specification is validated.
class Gem::EndOfYAMLException < Gem::Exception; end
##
# Signals that a file permission error is preventing the user from
# operating on the given directory.
class Gem::FilePermissionError < Gem::Exception
attr_reader :directory
def initialize directory
@directory = directory
super "You don't have write permissions for the #{directory} directory."
end
end
##
# Used to raise parsing and loading errors
class Gem::FormatException < Gem::Exception
attr_accessor :file_path
end
class Gem::GemNotFoundException < Gem::Exception; end
##
# Raised by the DependencyInstaller when a specific gem cannot be found
class Gem::SpecificGemNotFoundException < Gem::GemNotFoundException
##
# Creates a new SpecificGemNotFoundException for a gem with the given +name+
# and +version+. Any +errors+ encountered when attempting to find the gem
# are also stored.
def initialize(name, version, errors=nil)
super "Could not find a valid gem '#{name}' (#{version}) locally or in a repository"
@name = name
@version = version
@errors = errors
end
##
# The name of the gem that could not be found.
attr_reader :name
##
# The version of the gem that could not be found.
attr_reader :version
##
# Errors encountered attempting to find the gem.
attr_reader :errors
end
##
# Raised by Gem::Resolver when dependencies conflict and create the
# inability to find a valid possible spec for a request.
class Gem::ImpossibleDependenciesError < Gem::Exception
attr_reader :conflicts
attr_reader :request
def initialize request, conflicts
@request = request
@conflicts = conflicts
super build_message
end
def build_message # :nodoc:
requester = @request.requester
requester = requester ? requester.spec.full_name : 'The user'
dependency = @request.dependency
message = "#{requester} requires #{dependency} but it conflicted:\n"
@conflicts.each do |_, conflict|
message << conflict.explanation
end
message
end
def dependency
@request.dependency
end
end
class Gem::InstallError < Gem::Exception; end
##
# Potentially raised when a specification is validated.
class Gem::InvalidSpecificationException < Gem::Exception; end
class Gem::OperationNotSupportedError < Gem::Exception; end
##
# Signals that a remote operation cannot be conducted, probably due to not
# being connected (or just not finding host).
#--
# TODO: create a method that tests connection to the preferred gems server.
# All code dealing with remote operations will want this. Failure in that
# method should raise this error.
class Gem::RemoteError < Gem::Exception; end
class Gem::RemoteInstallationCancelled < Gem::Exception; end
class Gem::RemoteInstallationSkipped < Gem::Exception; end
##
# Represents an error communicating via HTTP.
class Gem::RemoteSourceException < Gem::Exception; end
##
# Raised when a gem dependencies file specifies a ruby version that does not
# match the current version.
class Gem::RubyVersionMismatch < Gem::Exception; end
##
# Raised by Gem::Validator when something is not right in a gem.
class Gem::VerificationError < Gem::Exception; end
##
# Raised to indicate that a system exit should occur with the specified
# exit_code
class Gem::SystemExitException < SystemExit
##
# The exit code for the process
attr_accessor :exit_code
##
# Creates a new SystemExitException with the given +exit_code+
def initialize(exit_code)
@exit_code = exit_code
super "Exiting RubyGems with exit_code #{exit_code}"
end
end
##
# Raised by Resolver when a dependency requests a gem for which
# there is no spec.
class Gem::UnsatisfiableDependencyError < Gem::DependencyError
##
# The unsatisfiable dependency. This is a
# Gem::Resolver::DependencyRequest, not a Gem::Dependency
attr_reader :dependency
##
# Errors encountered which may have contributed to this exception
attr_accessor :errors
##
# Creates a new UnsatisfiableDependencyError for the unsatisfiable
# Gem::Resolver::DependencyRequest +dep+
def initialize dep, platform_mismatch=nil
if platform_mismatch and !platform_mismatch.empty?
plats = platform_mismatch.map { |x| x.platform.to_s }.sort.uniq
super "Unable to resolve dependency: No match for '#{dep}' on this platform. Found: #{plats.join(', ')}"
else
if dep.explicit?
super "Unable to resolve dependency: user requested '#{dep}'"
else
super "Unable to resolve dependency: '#{dep.request_context}' requires '#{dep}'"
end
end
@dependency = dep
@errors = []
end
##
# The name of the unresolved dependency
def name
@dependency.name
end
##
# The Requirement of the unresolved dependency (not Version).
def version
@dependency.requirement
end
end
##
# Backwards compatible typo'd exception class for early RubyGems 2.0.x
Gem::UnsatisfiableDepedencyError = Gem::UnsatisfiableDependencyError # :nodoc: