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zebra
QList<QByteArray> and QList<QVariant> conversion & use cxx:operator== and qt:operator== in cxx:=
Annotate for file src/variant.lisp
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(in-package :qt)
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(defmethod print-object ((variant variant) stream)
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"Print the type and value of the variant."
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(if (or (not (slot-boundp variant 'pointer))
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(null-pointer-p (pointer variant)))
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(call-next-method)
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(print-unreadable-object (variant stream :type t :identity t)
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(format stream "~A~@[ ~S~]"
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(cxx:type-name variant)
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(handler-case (from-variant variant)
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(error () nil))))))
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(defun make-variant (&optional (value nil value-p))
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"Returns a new VARIANT containing a C++ version of VALUE
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or an empty variant when VALUE is not specified."
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(if value-p
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(make-instance 'variant :args (list value))
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(make-instance 'variant)))
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(defun make-char (character)
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"Returns a char for a lisp CHARACTER."
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(let ((octets (babel:string-to-octets (string character))))
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(case (length octets)
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(1 (make-instance 'char :args (list (aref octets 0))))
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(2 (make-instance 'char :args (list (aref octets 0)
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(aref octets 1))))
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(t (error "qt:char requires the character ~A to be encoded
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in one or two octets, but it is using ~A."
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character (length octets))))))
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'
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(defun surrogate-p (char)
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(or (cxx:is-high-surrogate char)
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(cxx:is-low-surrogate char)))
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(defun from-char (char)
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"Returns the lisp character represented by CHAR."
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(assert (not (surrogate-p char))
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(char)
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"The char ~A is part of a surrogate.")
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(char
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(babel:octets-to-string (make-array 2 :element-type '(unsigned-byte 8)
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:initial-contents
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(list
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(char-code (cxx:cell char))
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(char-code (cxx:row char)))))
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0))
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(defmethod print-object ((char char) stream)
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(if (or (null-pointer-p (pointer char))
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(surrogate-p char))
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(call-next-method)
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(print-unreadable-object (char stream :type t)
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(princ (from-char char) stream))))
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;; FIXME include in MAKE-VARIANT?
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(defun make-lisp-variant (value)
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"Returns a new VARIANT that wraps VALUE.
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The variant contains the actual Lisp object
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and not its C++ value like in MAKE-VARIANT."
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(let ((object (make-cxx-lisp-object value)))
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(unwind-protect
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(make-instance 'variant :args (list *cxx-lisp-object-metatype*
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object))
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(free-cxx-lisp-object object))))
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'
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(defcfun qt-smoke-lisp-object-value :pointer
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(variant :pointer))
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(defun variant-boundp (variant)
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"Returns true when VARIANT is valid (has a value) and false otherwise."
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(cxx:is-valid variant))
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(defun from-variant (variant)
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"Returns the value of VARIANT."
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(ecase (cxx:user-type variant)
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(#.(value variant.+invalid+)
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(cerror "Return (VALUES)" "Type of variant ~A is invalid." variant)
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(values))
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(#.(value variant.+string+)
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(cxx:to-string variant))
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(#.(value variant.+string-list+)
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(cxx:to-string-list variant))
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(#.(value variant.+uint+)
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(cxx:to-uint variant))
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(#.(value variant.+int+)
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(cxx:to-int variant))
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(#.(value variant.+double+)
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(cxx:to-double variant))
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(#.(value variant.+char+)
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(cxx:to-char variant))
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(#.(value variant.+bool+)
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(cxx:to-bool variant))
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(#.*cxx-lisp-object-metatype*
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(let* ((lisp-object (qt-smoke-lisp-object-value (smoke::pointer variant)))
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(value))
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(setf value (translate-cxx-lisp-object lisp-object))
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(free-cxx-lisp-object lisp-object)
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value))))
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(defmethod value ((variant variant))
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"Returns the value of VARIANT."
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(from-variant variant))
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(defmethod (setf value) (new-value (variant variant))
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(cxx:operator= variant (make-variant new-value))
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new-value)