Class: Samovar::Nested
- Inherits:
-
Object
- Object
- Samovar::Nested
- Defined in:
- lib/samovar/nested.rb
Instance Attribute Summary collapse
-
#commands ⇒ Object
readonly
Returns the value of attribute commands.
-
#default ⇒ Object
readonly
Returns the value of attribute default.
-
#key ⇒ Object
readonly
Returns the value of attribute key.
-
#required ⇒ Object
readonly
Returns the value of attribute required.
Instance Method Summary collapse
-
#initialize(key, commands, default: nil, required: false) ⇒ Nested
constructor
A new instance of Nested.
- #parse(input, parent = nil, default = nil) ⇒ Object
- #to_a ⇒ Object
- #to_s ⇒ Object
- #usage(rows) ⇒ Object
Constructor Details
#initialize(key, commands, default: nil, required: false) ⇒ Nested
Returns a new instance of Nested.
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# File 'lib/samovar/nested.rb', line 23 def initialize(key, commands, default: nil, required: false) @key = key @commands = commands # This is the default name [of a command], not the default command: @default = default @required = required end |
Instance Attribute Details
#commands ⇒ Object (readonly)
Returns the value of attribute commands.
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# File 'lib/samovar/nested.rb', line 34 def commands @commands end |
#default ⇒ Object (readonly)
Returns the value of attribute default.
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# File 'lib/samovar/nested.rb', line 35 def default @default end |
#key ⇒ Object (readonly)
Returns the value of attribute key.
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# File 'lib/samovar/nested.rb', line 33 def key @key end |
#required ⇒ Object (readonly)
Returns the value of attribute required.
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# File 'lib/samovar/nested.rb', line 36 def required @required end |
Instance Method Details
#parse(input, parent = nil, default = nil) ⇒ Object
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# File 'lib/samovar/nested.rb', line 63 def parse(input, parent = nil, default = nil) if command = @commands[input.first] name = input.shift # puts "Instantiating #{command} with #{input}" command.new(input, name: name, parent: parent) elsif default return default elsif @default @commands[@default].new(input, name: @default, parent: parent) elsif @required raise MissingValueError.new(parent, self) end end |
#to_a ⇒ Object
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# File 'lib/samovar/nested.rb', line 42 def to_a usage = [self.to_s] if @commands.size == 0 usage << "No commands available." elsif @commands.size == 1 usage << "Only #{@commands.first}." else usage << "One of: #{@commands.keys.join(', ')}." end if @default usage << "(default: #{@default})" elsif @required usage << "(required)" end return usage end |
#to_s ⇒ Object
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# File 'lib/samovar/nested.rb', line 38 def to_s "<#{@key}>" end |
#usage(rows) ⇒ Object
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# File 'lib/samovar/nested.rb', line 78 def usage(rows) rows << self @commands.each do |key, klass| klass.usage(rows, key) end end |