Class: Toys::ToolDefinition

Inherits:
Object
  • Object
show all
Defined in:
lib/toys/tool_definition.rb

Overview

A ToolDefinition describes a single command that can be invoked using Toys. It has a name, a series of one or more words that you use to identify the tool on the command line. It also has a set of formal flags and command line arguments supported, and a block that gets run when the tool is executed.

Defined Under Namespace

Classes: DefaultCompletion, Settings

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#built_middleware ⇒ Array<Toys::Middleware> (readonly)

The stack of built middleware specs for this tool.

Returns:



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# File 'lib/toys/tool_definition.rb', line 418

def built_middleware
  @built_middleware
end

#completion ⇒ Toys::Completion::Base, Proc

The completion strategy for this tool.

When reading, this may return an instance of one of the subclasses of Completion::Base, or a Proc that duck-types it. Generally, this defaults to a DefaultCompletion, providing a standard algorithm that finds appropriate completions from flags, positional arguments, and subtools.

When setting, you may pass any of the following:

  • nil or :default which sets the value to a default instance.
  • A Hash of options to pass to the DefaultCompletion constructor.
  • Any other form recognized by Completion.create.

Returns:



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# File 'lib/toys/tool_definition.rb', line 453

def completion
  @completion
end

#custom_context_directory ⇒ String?

The custom context directory set for this tool.

Returns:

  • (String) —

    The directory path

  • (nil) —

    if no custom context directory is set.



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# File 'lib/toys/tool_definition.rb', line 434

def custom_context_directory
  @custom_context_directory
end

#default_data ⇒ Hash (readonly)

The default context data set by arguments.

Returns:

  • (Hash) 


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# File 'lib/toys/tool_definition.rb', line 402

def default_data
  @default_data
end

#delegate_target ⇒ Array<String>? (readonly)

The full name of the delegate target, if any.

Returns:

  • (Array<String>) —

    if this tool delegates

  • (nil) —

    if this tool does not delegate



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# File 'lib/toys/tool_definition.rb', line 493

def delegate_target
  @delegate_target
end

#desc ⇒ Toys::WrappableString

The short description string.

When reading, this is always returned as a WrappableString.

When setting, the description may be provided as any of the following:

  • A WrappableString.
  • A normal String, which will be transformed into a WrappableString using spaces as word delimiters.
  • An Array of String, which will be transformed into a WrappableString where each array element represents an individual word for wrapping.

Returns:



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# File 'lib/toys/tool_definition.rb', line 333

def desc
  @desc
end

#flag_groups ⇒ Array<Toys::FlagGroup> (readonly)

A list of all defined flag groups, in order.

Returns:



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# File 'lib/toys/tool_definition.rb', line 359

def flag_groups
  @flag_groups
end

#flags ⇒ Array<Toys::Flag> (readonly)

A list of all defined flags.

Returns:



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# File 'lib/toys/tool_definition.rb', line 366

def flags
  @flags
end

#full_name ⇒ Array<String> (readonly)

The name of the tool as an array of strings. This array may not be modified.

Returns:

  • (Array<String>) 


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# File 'lib/toys/tool_definition.rb', line 295

def full_name
  @full_name
end

#long_desc ⇒ Array<Toys::WrappableString>

The long description strings.

When reading, this is returned as an Array of WrappableString representing the lines in the description.

When setting, the description must be provided as an Array where each element may be any of the following:

  • A WrappableString representing one line.
  • A normal String representing a line. This will be transformed into a WrappableString using spaces as word delimiters.
  • An Array of String representing a line. This will be transformed into a WrappableString where each array element represents an individual word for wrapping.

Returns:



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# File 'lib/toys/tool_definition.rb', line 352

def long_desc
  @long_desc
end

#optional_args ⇒ Array<Toys::PositionalArg> (readonly)

A list of all defined optional positional arguments.

Returns:



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# File 'lib/toys/tool_definition.rb', line 380

def optional_args
  @optional_args
end

#priority ⇒ Integer (readonly)

The priority of this tool definition.

Returns:

  • (Integer) 


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# File 'lib/toys/tool_definition.rb', line 302

def priority
  @priority
end

#remaining_arg ⇒ Toys::PositionalArg? (readonly)

The remaining arguments specification.

Returns:

  • (Toys::PositionalArg) —

    The argument definition

  • (nil) —

    if remaining arguments are not supported by this tool.



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# File 'lib/toys/tool_definition.rb', line 388

def remaining_arg
  @remaining_arg
end

#required_args ⇒ Array<Toys::PositionalArg> (readonly)

A list of all defined required positional arguments.

Returns:



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# File 'lib/toys/tool_definition.rb', line 373

def required_args
  @required_args
end

#run_handler ⇒ Proc, ...

The run handler.

This handler is called to run the tool. Normally it is a method name, represented by a symbol. (The default is :run.) It can be set to a different method name, or to a proc that will be called with self set to the tool context. Either way, it takes no arguments. The run handler can also be explicitly set to nil indicating a non-runnable tool; however, typically a tool is made non-runnable simply by leaving the run handler set to :run and not defining the method.

Returns:

  • (Proc) —

    if the run handler is defined as a Proc

  • (Symbol) —

    if the run handler is defined as a method

  • (nil) —

    if the tool is explicitly made non-runnable



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# File 'lib/toys/tool_definition.rb', line 470

def run_handler
  @run_handler
end

#settings ⇒ Toys::ToolDefinition::Settings (readonly)

Settings for this tool

Returns:



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# File 'lib/toys/tool_definition.rb', line 287

def settings
  @settings
end

#source_info ⇒ Toys::SourceInfo? (readonly)

Info on the source of this tool.

Returns:

  • (Toys::SourceInfo) —

    The source info

  • (nil) —

    if the source is not defined.



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# File 'lib/toys/tool_definition.rb', line 426

def source_info
  @source_info
end

#source_root ⇒ Toys::SourceInfo? (readonly)

The root source info defining this tool, or nil if there is no source.

Returns:



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# File 'lib/toys/tool_definition.rb', line 309

def source_root
  @source_root
end

#subtool_middleware_stack ⇒ Array<Toys::Middleware::Spec> (readonly)

The stack of middleware specs used for subtools.

This array may be modified in place.

Returns:



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# File 'lib/toys/tool_definition.rb', line 411

def subtool_middleware_stack
  @subtool_middleware_stack
end

#tool_class ⇒ Class (readonly)

The tool class.

Returns:

  • (Class) 


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# File 'lib/toys/tool_definition.rb', line 316

def tool_class
  @tool_class
end

#usage_error_handler ⇒ Proc, ...

The usage error handler.

This handler is called when at least one usage error is detected during argument parsing, and is called instead of the run method. It can be specified as a Proc, or a Symbol indicating a method to call. It optionally takes an array of ArgParser::UsageError as the sole argument.

Returns:

  • (Proc) —

    if the usage error handler is defined as a Proc

  • (Symbol) —

    if the user error handler is defined as a method

  • (nil) —

    if there is no usage error handler



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# File 'lib/toys/tool_definition.rb', line 485

def usage_error_handler
  @usage_error_handler
end

#used_flags ⇒ Array<String> (readonly)

A list of flags that have been used in the flag definitions.

Returns:

  • (Array<String>) 


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# File 'lib/toys/tool_definition.rb', line 395

def used_flags
  @used_flags
end

Instance Method Details

#add_acceptor(name, acceptor = nil, type_desc: nil, &block) ⇒ self

Add a named acceptor to the tool. This acceptor may be refereneced by name when adding a flag or an arg. See Acceptor.create for detailed information on how to specify an acceptor.

Parameters:

  • name (String) —

    The name of the acceptor.

  • acceptor (Toys::Acceptor::Base, Object) (defaults to: nil) —

    The acceptor to add. You can provide either an acceptor object, or a spec understood by Acceptor.create.

  • type_desc (String) (defaults to: nil) —

    Type description string, shown in help. Defaults to the acceptor name.

  • block (Proc) —

    Optional block used to create an acceptor. See Acceptor.create.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 825

def add_acceptor(name, acceptor = nil, type_desc: nil, &block)
  name = name.to_s
  if @acceptors.key?(name)
    raise ToolDefinitionError,
          "An acceptor named #{name.inspect} has already been defined in tool" \
          " #{display_name.inspect}."
  end
  @acceptors[name] = Toys::Acceptor.create(acceptor, type_desc: type_desc, &block)
  self
end

#add_completion(name, completion = nil, **options, &block) ⇒ self

Add a named completion proc to this tool. The completion may be referenced by name when adding a flag or an arg. See Completion.create for detailed information on how to specify a completion.

Parameters:

  • name (String) —

    The name of the completion.

  • completion (Proc, Toys::Completion::Base, Object) (defaults to: nil) —

    The completion to add. You can provide either a completion object, or a spec understood by Completion.create.

  • options (Hash) —

    Additional options to pass to the completion.

  • block (Proc) —

    Optional block used to create a completion. See Completion.create.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 872

def add_completion(name, completion = nil, **options, &block)
  name = name.to_s
  if @completions.key?(name)
    raise ToolDefinitionError,
          "A completion named #{name.inspect} has already been defined in tool" \
          " #{display_name.inspect}."
  end
  @completions[name] = Toys::Completion.create(completion, **options, &block)
  self
end

#add_flag(key, flags = [], accept: nil, default: nil, handler: nil, complete_flags: nil, complete_values: nil, report_collisions: true, group: nil, desc: nil, long_desc: nil, display_name: nil) ⇒ self

Add a flag to the current tool. Each flag must specify a key which the script may use to obtain the flag value from the context. You may then provide the flags themselves in OptionParser form.

Parameters:

  • key (String, Symbol) —

    The key to use to retrieve the value from the execution context.

  • flags (Array<String>) (defaults to: []) —

    The flags in OptionParser format. If empty, a flag will be inferred from the key.

  • accept (Object) (defaults to: nil) —

    An acceptor that validates and/or converts the value. You may provide either the name of an acceptor you have defined, or one of the default acceptors provided by OptionParser. Optional. If not specified, accepts any value as a string.

  • default (Object) (defaults to: nil) —

    The default value. This is the value that will be set in the context if this flag is not provided on the command line. Defaults to nil.

  • handler (Proc, nil, :set, :push) (defaults to: nil) —

    An optional handler for setting/updating the value. A handler is a proc taking two arguments, the given value and the previous value, returning the new value that should be set. You may also specify a predefined named handler. The :set handler (the default) replaces the previous value (effectively -> (val, _prev) { val }). The :push handler expects the previous value to be an array and pushes the given value onto it; it should be combined with setting default: [] and is intended for "multi-valued" flags.

  • complete_flags (Object) (defaults to: nil) —

    A specifier for shell tab completion for flag names associated with this flag. By default, a Flag::DefaultCompletion is used, which provides the flag's names as completion candidates. To customize completion, set this to a hash of options to pass to the constructor for Flag::DefaultCompletion, or pass any other spec recognized by Completion.create.

  • complete_values (Object) (defaults to: nil) —

    A specifier for shell tab completion for flag values associated with this flag. Pass any spec recognized by Completion.create.

  • report_collisions (true, false) (defaults to: true) —

    Raise an exception if a flag is requested that is already in use or marked as disabled. Default is true.

  • group (Toys::FlagGroup, String, Symbol, nil) (defaults to: nil) —

    Group for this flag. You may provide a group name, a FlagGroup object, or nil which denotes the default group.

  • desc (String, Array<String>, Toys::WrappableString) (defaults to: nil) —

    Short description for the flag. See #desc for a description of allowed formats. Defaults to the empty string.

  • long_desc (Array<String,Array<String>,Toys::WrappableString>) (defaults to: nil) —

    Long description for the flag. See #long_desc for a description of allowed formats. Defaults to the empty array.

  • display_name (String) (defaults to: nil) —

    A display name for this flag, used in help text and error messages.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 1050

def add_flag(key, flags = [],
             accept: nil, default: nil, handler: nil, complete_flags: nil,
             complete_values: nil, report_collisions: true, group: nil, desc: nil,
             long_desc: nil, display_name: nil)
  unless group.is_a?(FlagGroup::Base)
    group_name = group
    group = @flag_group_names[group_name]
    raise ToolDefinitionError, "No such flag group: #{group_name.inspect}" if group.nil?
  end
  check_definition_state(is_arg: true)
  accept = resolve_acceptor_name(accept)
  complete_flags = resolve_completion_name(complete_flags)
  complete_values = resolve_completion_name(complete_values)
  flag_def = Flag.new(key, flags, @used_flags, report_collisions, accept, handler, default,
                      complete_flags, complete_values, desc, long_desc, display_name, group)
  if flag_def.active?
    @flags << flag_def
    group << flag_def
  end
  @default_data[key] = default
  self
end

#add_flag_group(type: :optional, desc: nil, long_desc: nil, name: nil, report_collisions: true, prepend: false) ⇒ self

Add a flag group to the group list.

The type should be one of the following symbols:

  • :optional All flags in the group are optional
  • :required All flags in the group are required
  • :exactly_one Exactly one flag in the group must be provided
  • :at_least_one At least one flag in the group must be provided
  • :at_most_one At most one flag in the group must be provided

Parameters:

  • type (Symbol) (defaults to: :optional) —

    The type of group. Default is :optional.

  • desc (String, Array<String>, Toys::WrappableString) (defaults to: nil) —

    Short description for the group. See #desc for a description of allowed formats. Defaults to "Flags".

  • long_desc (Array<String,Array<String>,Toys::WrappableString>) (defaults to: nil) —

    Long description for the flag group. See #long_desc for a description of allowed formats. Defaults to the empty array.

  • name (String, Symbol, nil) (defaults to: nil) —

    The name of the group, or nil for no name.

  • report_collisions (true, false) (defaults to: true) —

    If true, raise an exception if a the given name is already taken. If false, ignore. Default is true.

  • prepend (true, false) (defaults to: false) —

    If true, prepend rather than append the group to the list. Default is false.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 983

def add_flag_group(type: :optional, desc: nil, long_desc: nil,
                   name: nil, report_collisions: true, prepend: false)
  if !name.nil? && @flag_group_names.key?(name)
    return self unless report_collisions
    raise ToolDefinitionError, "Flag group #{name} already exists"
  end
  group = FlagGroup.create(type: type, name: name, desc: desc, long_desc: long_desc)
  @flag_group_names[name] = group unless name.nil?
  if prepend
    @flag_groups.unshift(group)
  else
    @flag_groups.push(group)
  end
  self
end

#add_initializer(proc, *args, **kwargs) ⇒ self

Add an initializer.

Parameters:

  • proc (Proc) —

    The initializer block

  • args (Object...) —

    Arguments to pass to the initializer

  • kwargs (keywords) —

    Keyword arguments to pass to the initializer

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 1281

def add_initializer(proc, *args, **kwargs)
  check_definition_state
  @initializers << [proc, args, kwargs]
  self
end

#add_mixin(name, mixin_module = nil, &block) ⇒ self

Add a named mixin module to this tool. You may provide a mixin module or a block that configures one.

Parameters:

  • name (String) —

    The name of the mixin.

  • mixin_module (Module) (defaults to: nil) —

    The mixin module.

  • block (Proc) —

    Define the mixin module here if a mixin_module is not provided directly.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 846

def add_mixin(name, mixin_module = nil, &block)
  name = name.to_s
  if @mixins.key?(name)
    raise ToolDefinitionError,
          "A mixin named #{name.inspect} has already been defined in tool" \
          " #{display_name.inspect}."
  end
  @mixins[name] = mixin_module || Mixin.create(&block)
  self
end

#add_optional_arg(key, default: nil, accept: nil, complete: nil, display_name: nil, desc: nil, long_desc: nil) ⇒ self

Add an optional positional argument to the current tool. You must specify a key which the script may use to obtain the argument value from the context. If an optional argument is not given on the command line, the value is set to the given default.

Parameters:

  • key (String, Symbol) —

    The key to use to retrieve the value from the execution context.

  • default (Object) (defaults to: nil) —

    The default value. This is the value that will be set in the context if this argument is not provided on the command line. Defaults to nil.

  • accept (Object) (defaults to: nil) —

    An acceptor that validates and/or converts the value. You may provide either the name of an acceptor you have defined, or one of the default acceptors provided by OptionParser. Optional. If not specified, accepts any value as a string.

  • complete (Object) (defaults to: nil) —

    A specifier for shell tab completion. See Completion.create for recognized formats.

  • display_name (String) (defaults to: nil) —

    A name to use for display (in help text and error reports). Defaults to the key in upper case.

  • desc (String, Array<String>, Toys::WrappableString) (defaults to: nil) —

    Short description for the arg. See #desc for a description of allowed formats. Defaults to the empty string.

  • long_desc (Array<String,Array<String>,Toys::WrappableString>) (defaults to: nil) —

    Long description for the arg. See #long_desc for a description of allowed formats. Defaults to the empty array.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 1153

def add_optional_arg(key, default: nil, accept: nil, complete: nil,
                     display_name: nil, desc: nil, long_desc: nil)
  check_definition_state(is_arg: true)
  accept = resolve_acceptor_name(accept)
  complete = resolve_completion_name(complete)
  arg_def = PositionalArg.new(key, :optional, accept, default, complete,
                              desc, long_desc, display_name)
  @optional_args << arg_def
  @default_data[key] = default
  self
end

#add_required_arg(key, accept: nil, complete: nil, display_name: nil, desc: nil, long_desc: nil) ⇒ self

Add a required positional argument to the current tool. You must specify a key which the script may use to obtain the argument value from the context.

Parameters:

  • key (String, Symbol) —

    The key to use to retrieve the value from the execution context.

  • accept (Object) (defaults to: nil) —

    An acceptor that validates and/or converts the value. You may provide either the name of an acceptor you have defined, or one of the default acceptors provided by OptionParser. Optional. If not specified, accepts any value as a string.

  • complete (Object) (defaults to: nil) —

    A specifier for shell tab completion. See Completion.create for recognized formats.

  • display_name (String) (defaults to: nil) —

    A name to use for display (in help text and error reports). Defaults to the key in upper case.

  • desc (String, Array<String>, Toys::WrappableString) (defaults to: nil) —

    Short description for the arg. See #desc for a description of allowed formats. Defaults to the empty string.

  • long_desc (Array<String,Array<String>,Toys::WrappableString>) (defaults to: nil) —

    Long description for the arg. See #long_desc for a description of allowed formats. Defaults to the empty array.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 1115

def add_required_arg(key, accept: nil, complete: nil, display_name: nil,
                     desc: nil, long_desc: nil)
  check_definition_state(is_arg: true)
  accept = resolve_acceptor_name(accept)
  complete = resolve_completion_name(complete)
  arg_def = PositionalArg.new(key, :required, accept, nil, complete,
                              desc, long_desc, display_name)
  @required_args << arg_def
  self
end

#add_template(name, template_class = nil, &block) ⇒ self

Add a named template class to this tool. You may provide a template class or a block that configures one.

Parameters:

  • name (String) —

    The name of the template.

  • template_class (Class) (defaults to: nil) —

    The template class.

  • block (Proc) —

    Define the template class here if a template_class is not provided directly.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 893

def add_template(name, template_class = nil, &block)
  name = name.to_s
  if @templates.key?(name)
    raise ToolDefinitionError,
          "A template named #{name.inspect} has already been defined in tool" \
          " #{display_name.inspect}."
  end
  @templates[name] = template_class || Template.create(&block)
  self
end

#append_long_desc(long_desc) ⇒ self

Append long description strings.

You must pass an array of lines in the long description. See #long_desc for details on how each line may be represented.

Parameters:

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 804

def append_long_desc(long_desc)
  check_definition_state
  @long_desc.concat(WrappableString.make_array(long_desc))
  self
end

#argument_parsing_disabled? ⇒ true, false

Returns true if this tool has disabled argument parsing.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 635

def argument_parsing_disabled?
  @disable_argument_parsing
end

#context_directory ⇒ String?

Return the effective context directory. If there is a custom context directory, uses that. Otherwise, looks for a custom context directory up the tool ancestor chain. If none is found, uses the default context directory from the source info. It is possible for there to be no context directory at all, in which case, returns nil.

Returns:

  • (String) —

    The effective context directory path.

  • (nil) —

    if there is no effective context directory.



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# File 'lib/toys/tool_definition.rb', line 1331

def context_directory
  lookup_custom_context_directory || source_info&.context_directory
end

#definition_finished? ⇒ true, false

Returns true if this tool's definition has been finished and is locked.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 627

def definition_finished?
  @definition_finished
end

#delegate_to(target) ⇒ self

Causes this tool to delegate to another tool.

Parameters:

  • target (Array<String>) —

    The full path to the delegate tool.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 1341

def delegate_to(target)
  if @delegate_target
    return self if target == @delegate_target
    raise ToolDefinitionError,
          "Cannot delegate tool #{display_name.inspect} to #{target.join(' ')} because it" \
          " already delegates to \"#{@delegate_target.join(' ')}\"."
  end
  if includes_arguments? || runnable? || includes_modules? || !default_data.empty?
    raise ToolDefinitionError,
          "Cannot delegate tool #{display_name.inspect} because" \
          " some implementation has already been created for it."
  end
  disable_argument_parsing
  self.run_handler = make_delegation_run_handler(target)
  self.completion = DefaultCompletion.new(delegation_target: target)
  @delegate_target = target
  self
end

#disable_argument_parsing ⇒ self

Disable argument parsing for this tool.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 909

def disable_argument_parsing
  check_definition_state
  if includes_arguments?
    raise ToolDefinitionError,
          "Cannot disable argument parsing for tool #{display_name.inspect}" \
          " because arguments have already been defined."
  end
  @disable_argument_parsing = true
  self
end

#disable_flag(*flags) ⇒ self

Mark one or more flags as disabled, preventing their use by any subsequent flag definition. This may be used to prevent middleware from defining a particular flag.

Parameters:

  • flags (String...) —

    The flags to disable

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 1081

def disable_flag(*flags)
  check_definition_state(is_arg: true)
  flags = flags.uniq
  intersection = @used_flags & flags
  unless intersection.empty?
    raise ToolDefinitionError, "Cannot disable flags already used: #{intersection.inspect}"
  end
  @used_flags.concat(flags)
  self
end

#display_name ⇒ String

A displayable name of this tool, generally the full name delimited by spaces.

Returns:

  • (String) 


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# File 'lib/toys/tool_definition.rb', line 510

def display_name
  full_name.join(" ")
end

#enforce_flags_before_args(state = true) ⇒ self

Enforce that flags must come before args for this tool. You may disable enforcement by passoing false for the state.

Parameters:

  • state (true, false) (defaults to: true)

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 927

def enforce_flags_before_args(state = true)
  check_definition_state
  if argument_parsing_disabled?
    raise ToolDefinitionError,
          "Cannot enforce flags before args for tool #{display_name.inspect}" \
          " because parsing is disabled."
  end
  @enforce_flags_before_args = state
  self
end

#exact_flag_match_required? ⇒ true, false

Returns true if this tool requires exact flag matches.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 651

def exact_flag_match_required?
  @require_exact_flag_match
end

#flags_before_args_enforced? ⇒ true, false

Returns true if this tool enforces flags before args.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 643

def flags_before_args_enforced?
  @enforce_flags_before_args
end

#handles_interrupts? ⇒ true, false

Returns true if this tool handles interrupts. This is equivalent to handles_signal?(2).

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 565

def handles_interrupts?
  handles_signal?(2)
end

#handles_signal?(signal) ⇒ true, false

Returns true if this tool handles the given signal.

Parameters:

  • signal (Integer, String, Symbol) —

    The signal number or name

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 575

def handles_signal?(signal)
  signal = canonicalize_signal(signal)
  !@signal_handlers[signal].nil?
end

#handles_usage_errors? ⇒ true, false

Returns true if this tool handles usage errors.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 584

def handles_usage_errors?
  !usage_error_handler.nil?
end

#include_mixin(mod, *args, **kwargs) ⇒ self

Include the given mixin in the tool class.

The mixin must be given as a module. You can use #lookup_mixin to resolve named mixins.

Parameters:

  • mod (Module) —

    The mixin module

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 736

def include_mixin(mod, *args, **kwargs)
  check_definition_state
  if tool_class.included_modules.include?(mod)
    raise ToolDefinitionError, "Mixin already included: #{mod.name}"
  end
  @includes_modules = true
  if tool_class.respond_to?(:super_include)
    tool_class.super_include(mod)
  else
    tool_class.include(mod)
  end
  if mod.respond_to?(:initializer)
    callback = mod.initializer
    add_initializer(callback, *args, **kwargs) if callback
  end
  if mod.respond_to?(:inclusion)
    callback = mod.inclusion
    tool_class.class_exec(*args, **kwargs, &callback) if callback
  end
  self
end

#includes_arguments? ⇒ true, false

Returns true if at least one flag or positional argument is defined for this tool.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 609

def includes_arguments?
  !flags.empty? || !required_args.empty? || !optional_args.empty? ||
    !remaining_arg.nil? || flags_before_args_enforced?
end

#includes_definition? ⇒ true, false

Returns true if this tool has any definition information.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 618

def includes_definition?
  includes_arguments? || runnable? || argument_parsing_disabled? ||
    includes_modules? || includes_description? || !default_data.empty?
end

#includes_description? ⇒ true, false

Returns true if there is a specific description set for this tool.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 600

def includes_description?
  !long_desc.empty? || !desc.empty?
end

#includes_modules? ⇒ true, false

Returns true if this tool has at least one included module.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 592

def includes_modules?
  @includes_modules
end

#interrupt_handler ⇒ Proc, ...

Return the interrupt handler. This is equivalent to signal_handler(2).

Returns:

  • (Proc) —

    if the interrupt signal handler is defined as a Proc

  • (Symbol) —

    if the interrupt signal handler is defined as a method

  • (nil) —

    if there is no handler for the interrupt signals



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# File 'lib/toys/tool_definition.rb', line 538

def interrupt_handler
  signal_handler(2)
end

#interrupt_handler=(handler) ⇒ Object

Set the interrupt handler. This is equivalent to calling #set_signal_handler for the SIGINT signal.

Parameters:

  • handler (Proc, Symbol) —

    The interrupt signal handler



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# File 'lib/toys/tool_definition.rb', line 1230

def interrupt_handler=(handler)
  set_signal_handler(2, handler)
end

#lock_source(source) ⇒ self

Sets the path to the file that defines this tool. A tool may be defined from at most one path. If a different path is already set, it is left unchanged.

Parameters:

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 766

def lock_source(source)
  @source_info ||= source
  self
end

#lookup_acceptor(name) ⇒ Toys::Acceptor::Base?

Get the named acceptor from this tool or its ancestors.

Parameters:

  • name (String) —

    The acceptor name.

Returns:



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# File 'lib/toys/tool_definition.rb', line 690

def lookup_acceptor(name)
  @acceptors.fetch(name.to_s) { |k| @parent&.lookup_acceptor(k) }
end

#lookup_completion(name) ⇒ Toys::Completion::Base, ...

Get the named completion from this tool or its ancestors.

Parameters:

  • name (String) —

    The completion name

Returns:

  • (Toys::Completion::Base, Proc) —

    The completion proc.

  • (nil) —

    if no completion of the given name is found.



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# File 'lib/toys/tool_definition.rb', line 723

def lookup_completion(name)
  @completions.fetch(name.to_s) { |k| @parent&.lookup_completion(k) }
end

#lookup_mixin(name) ⇒ Module?

Get the named mixin from this tool or its ancestors.

Parameters:

  • name (String) —

    The mixin name.

Returns:

  • (Module) —

    The mixin module.

  • (nil) —

    if no mixin of the given name is found.



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# File 'lib/toys/tool_definition.rb', line 712

def lookup_mixin(name)
  @mixins.fetch(name.to_s) { |k| @parent&.lookup_mixin(k) }
end

#lookup_template(name) ⇒ Class?

Get the named template from this tool or its ancestors.

Parameters:

  • name (String) —

    The template name.

Returns:

  • (Class, nil) —

    The template class.

  • (nil) —

    if no template of the given name is found.



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# File 'lib/toys/tool_definition.rb', line 701

def lookup_template(name)
  @templates.fetch(name.to_s) { |k| @parent&.lookup_template(k) }
end

#positional_args ⇒ Array<Toys::PositionalArg>

All arg definitions in order: required, optional, remaining.

Returns:



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# File 'lib/toys/tool_definition.rb', line 660

def positional_args
  result = required_args + optional_args
  result << remaining_arg if remaining_arg
  result
end

#require_exact_flag_match(state = true) ⇒ self

Require that flags must match exactly. (If false, flags can match an unambiguous substring.)

Parameters:

  • state (true, false) (defaults to: true)

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 945

def require_exact_flag_match(state = true)
  check_definition_state
  if argument_parsing_disabled?
    raise ToolDefinitionError,
          "Cannot require exact flag match for tool" \
          " #{display_name.inspect} because parsing is disabled."
  end
  @require_exact_flag_match = state
  self
end

#resolve_flag(str) ⇒ Toys::Flag::Resolution

Resolve the given flag given the flag string. Returns an object that describes the resolution result, including whether the resolution matched a unique flag, the specific flag syntax that was matched, and additional information.

Parameters:

  • str (String) —

    Flag string

Returns:



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# File 'lib/toys/tool_definition.rb', line 675

def resolve_flag(str)
  result = Flag::Resolution.new(str)
  flags.each do |flag_def|
    result.merge!(flag_def.resolve(str))
  end
  result
end

#root? ⇒ true, false

Returns true if this tool is a root tool.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 546

def root?
  full_name.empty?
end

#runnable? ⇒ true, false

Returns true if this tool is marked as runnable.

Returns:

  • (true, false) 


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# File 'lib/toys/tool_definition.rb', line 554

def runnable?
  @run_handler.is_a?(::Proc) ||
    (@run_handler.is_a?(::Symbol) && tool_class.public_instance_methods(false).include?(@run_handler))
end

#set_remaining_args(key, default: [], accept: nil, complete: nil, display_name: nil, desc: nil, long_desc: nil) ⇒ self

Specify what should be done with unmatched positional arguments. You must specify a key which the script may use to obtain the remaining args from the context.

Parameters:

  • key (String, Symbol) —

    The key to use to retrieve the value from the execution context.

  • default (Object) (defaults to: []) —

    The default value. This is the value that will be set in the context if no unmatched arguments are provided on the command line. Defaults to the empty array [].

  • accept (Object) (defaults to: nil) —

    An acceptor that validates and/or converts the value. You may provide either the name of an acceptor you have defined, or one of the default acceptors provided by OptionParser. Optional. If not specified, accepts any value as a string.

  • complete (Object) (defaults to: nil) —

    A specifier for shell tab completion. See Completion.create for recognized formats.

  • display_name (String) (defaults to: nil) —

    A name to use for display (in help text and error reports). Defaults to the key in upper case.

  • desc (String, Array<String>, Toys::WrappableString) (defaults to: nil) —

    Short description for the arg. See #desc for a description of allowed formats. Defaults to the empty string.

  • long_desc (Array<String,Array<String>,Toys::WrappableString>) (defaults to: nil) —

    Long description for the arg. See #long_desc for a description of allowed formats. Defaults to the empty array.

Returns:

  • (self) 


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# File 'lib/toys/tool_definition.rb', line 1191

def set_remaining_args(key, default: [], accept: nil, complete: nil,
                       display_name: nil, desc: nil, long_desc: nil)
  check_definition_state(is_arg: true)
  accept = resolve_acceptor_name(accept)
  complete = resolve_completion_name(complete)
  arg_def = PositionalArg.new(key, :remaining, accept, default, complete,
                              desc, long_desc, display_name)
  @remaining_arg = arg_def
  @default_data[key] = default
  self
end

#set_signal_handler(signal, handler) ⇒ Object

Set the handler for the given signal.

This handler is called when the given signal is received, immediately taking over the execution as if it were the new run method. The signal handler can be specified as a Proc, or a Symbol indicating a method to call. It optionally takes the SignalException as the sole argument.

Parameters:

  • signal (Integer, String, Symbol) —

    The signal number or name

  • handler (Proc, Symbol) —

    The signal handler



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# File 'lib/toys/tool_definition.rb', line 1245

def set_signal_handler(signal, handler)
  check_definition_state(is_method: true)
  if !handler.is_a?(::Proc) && !handler.is_a?(::Symbol) && !handler.nil?
    raise ToolDefinitionError, "Signal handler must be a proc or symbol"
  end
  signal = canonicalize_signal(signal)
  @signal_handlers[signal] = handler
end

#signal_handler(signal) ⇒ Proc, ...

Return the signal handler for the given signal.

This handler is called when the given signal is received, immediately taking over the execution as if it were the new run handler. The signal handler can be specified as a Proc, or a Symbol indicating a method to call. It optionally takes the SignalException as the sole argument.

Parameters:

  • signal (Integer, String, Symbol) —

    The signal number or name

Returns:

  • (Proc) —

    if the signal handler is defined as a Proc

  • (Symbol) —

    if the signal handler is defined as a method

  • (nil) —

    if there is no handler for the given signal



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# File 'lib/toys/tool_definition.rb', line 527

def signal_handler(signal)
  @signal_handlers[canonicalize_signal(signal)]
end

#simple_name ⇒ String

The local name of this tool, i.e. the last element of the full name.

Returns:

  • (String) 


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# File 'lib/toys/tool_definition.rb', line 500

def simple_name
  full_name.last
end