db59fa4f55
Implement the backend protocol with two backends (modern planned, simple done). Includes package definitions, CLOS generic protocol, simple-backend with ASCII borders, and 9 FiveAM tests. RED: 9/9 tests failing (no implementation) GREEN: 9/9 tests passing - backend/package.lisp — defpackage, exports - backend/classes.lisp — backend base class, 18 generics - backend/simple.lisp — simple-backend implementation - backend/tests.lisp — 9 FiveAM test cases - org/backend-protocol.org — literate source
61 lines
1.6 KiB
Common Lisp
61 lines
1.6 KiB
Common Lisp
(defclass backend () ())
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(defgeneric initialize-backend (backend)
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(:method ((b backend)) b))
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(defgeneric shutdown-backend (backend)
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(:method ((b backend)) (values)))
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(defgeneric backend-size (backend)
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(:method ((b backend))
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(values 80 24)))
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(defgeneric backend-write (backend string))
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(defgeneric backend-clear (backend)
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(:method ((b backend))
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(backend-write b (format nil "~C[2J~C[H" #\Esc #\Esc))))
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(defgeneric draw-text (backend x y string fg bg &key
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bold italic underline reverse dim blink))
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(defgeneric draw-border (backend x y width height
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&key style fg bg title title-align))
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(defgeneric draw-rect (backend x y width height &key bg))
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(defgeneric draw-link (backend x y string url &key fg bg))
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(defgeneric draw-ellipsis (backend x y width &key fg bg))
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(defgeneric cursor-move (backend x y))
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(defgeneric cursor-hide (backend)
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(:method ((b backend)) (values)))
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(defgeneric cursor-show (backend)
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(:method ((b backend)) (values)))
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(defgeneric cursor-style (backend shape &key blink)
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(:method ((b backend) shape &key blink) (values)))
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(defgeneric begin-sync (backend)
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(:method ((b backend)) (values)))
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(defgeneric end-sync (backend)
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(:method ((b backend)) (values)))
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(defgeneric read-event (backend &key timeout)
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(:method ((b backend) &key timeout) (values nil nil)))
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(defgeneric enable-mouse (backend)
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(:method ((b backend)) (values)))
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(defgeneric enable-bracketed-paste (backend)
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(:method ((b backend)) (values)))
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(defgeneric capable-p (backend feature)
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(:method ((b backend) feature)
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(declare (ignore feature))
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nil))
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