class

TermBuf::Input::Pattern

A sequence the application is interested in, and what to make of one.

This exists because a reply and a keystroke are not distinguishable by looking at them. An arrow key sends ESC [ A; so could a terminal. The only thing that separates them is that the application asked for one and not the other, which is what registering a pattern records.

The handler returning nil means "not mine after all", so a pattern that can only tell from the body whether it wants a sequence can let it carry on to the next pattern and, failing that, to the key decoder.

Constructors

new(prefix : Prefix, head : String = "", terminator : String | Nil = nil, &handler : Sequence -> Event | Nil)

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Instance methods

call(sequence : Sequence) : Event | Nil

What this pattern makes of sequence, or nil if it turns out not to want it.

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head

What has to come straight after the introducer, such as "?" for a mode report or "<" for an SGR mouse report. Empty matches anything.

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matches?(sequence : Sequence) : Bool

Whether sequence has this pattern's shape, which is as far as the bytes go; whether it is really this pattern's is up to the handler.

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prefix

Which introducer this is about.

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terminator

What has to come at the end, such as "$y" or "\e\\". nil matches anything.

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to_s(io : IO) : Nil

Appends a short String representation of this object which includes its class name and its object address.

class Person
  def initialize(@name : String, @age : Int32)
  end
end

Person.new("John", 32).to_s # => #<Person:0x10a199f20>

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