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-'\"
-'\" Copyright (c) 2007-2008 Donal K. Fellows
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
-.TH object n 0.1 TclOO "TclOO Commands"
-.so man.macros
-.BS
-'\" Note:  do not modify the .SH NAME line immediately below!
-.SH NAME
-oo::object \- root class of the class hierarchy
-.SH SYNOPSIS
-.nf
-package require TclOO
-
-\fBoo::object\fI method \fR?\fIarg ...\fR?
-.fi
-.SH "CLASS HIERARCHY"
-.nf
-\fBoo::object\fR
-.fi
-.BE
-.SH DESCRIPTION
-.PP
-The \fBoo::object\fR class is the root class of the object hierarchy; every
-object is an instance of this class. Since classes are themselves objects,
-they are instances of this class too. Objects are always referred to by their
-name, and may be \fBrename\fRd while maintaining their identity.
-.PP
-Instances of objects may be made with either the \fBcreate\fR or \fBnew\fR
-methods of the \fBoo::object\fR object itself, or by invoking those methods on
-any of the subclass objects; see \fBoo::class\fR for more details. The
-configuration of individual objects (i.e., instance-specific methods, mixed-in
-classes, etc.) may be controlled with the \fBoo::objdefine\fR command.
-.PP
-Each object has a unique namespace associated with it, the instance namespace.
-This namespace holds all the instance variables of the object, and will be the
-current namespace whenever a method of the object is invoked (including a
-method of the class of the object). When the object is destroyed, its instance
-namespace is deleted. The instance namespace contains the object's \fBmy\fR
-command, which may be used to invoke non-exported methods of the object or to
-create a reference to the object for the purpose of invocation which persists
-across renamings of the object.
-.SS CONSTRUCTOR
-The \fBoo::object\fR class does not define an explicit constructor.
-.SS DESTRUCTOR
-The \fBoo::object\fR class does not define an explicit destructor.
-.SS "EXPORTED METHODS"
-The \fBoo::object\fR class supports the following exported methods:
-.TP
-\fIobj \fBdestroy\fR
-.
-This method destroys the object, \fIobj\fR, that it is invoked upon, invoking
-any destructors on the object's class in the process. It is equivalent to
-using \fBrename\fR to delete the object command. The result of this method is
-always the empty string.
-.SS "NON-EXPORTED METHODS"
-.PP
-The \fBoo::object\fR class supports the following non-exported methods:
-.TP
-\fIobj \fBeval\fR ?\fIarg ...\fR?
-.
-This method concatenates the arguments, \fIarg\fR, as if with \fBconcat\fR,
-and then evaluates the resulting script in the namespace that is uniquely
-associated with \fIobj\fR, returning the result of the evaluation.
-.TP
-\fIobj \fBunknown ?\fImethodName\fR? ?\fIarg ...\fR?
-.
-This method is called when an attempt to invoke the method \fImethodName\fR on
-object \fIobj\fR fails. The arguments that the user supplied to the method are
-given as \fIarg\fR arguments.
-.VS
-If \fImethodName\fR is absent, the object was invoked with no method name at
-all (or any other arguments).
-.VE
-The default implementation (i.e., the one defined by the \fBoo::object\fR
-class) generates a suitable error, detailing what methods the object supports
-given whether the object was invoked by its public name or through the
-\fBmy\fR command.
-.TP
-\fIobj \fBvariable \fR?\fIvarName ...\fR?
-.
-This method arranges for each variable called \fIvarName\fR to be linked from
-the object \fIobj\fR's unique namespace into the caller's context. Thus, if it
-is invoked from inside a procedure then the namespace variable in the object
-is linked to the local variable in the procedure. Each \fIvarName\fR argument
-must not have any namespace separators in it. The result is the empty string.
-.TP
-\fIobj \fBvarname \fIvarName\fR
-.
-This method returns the globally qualified name of the variable \fIvarName\fR
-in the unique namespace for the object \fIobj\fR.
-.TP
-\fIobj \fB<cloned> \fIsourceObjectName\fR
-.VS
-This method is used by the \fBoo::object\fR command to copy the state of one
-object to another. It is responsible for copying the procedures and variables
-of the namespace of the source object (\fIsourceObjectName\fR) to the current
-object. It does not copy any other types of commands or any traces on the
-variables; that can be added if desired by overriding this method in a
-subclass.
-.VE
-.SH EXAMPLES
-.PP
-This example demonstrates basic use of an object.
-.PP
-.CS
-set obj [\fBoo::object\fR new]
-$obj foo             \fI\(-> error "unknown method foo"\fR
-oo::objdefine $obj method foo {} {
-    my \fBvariable\fR count
-    puts "bar[incr count]"
-}
-$obj foo             \fI\(-> prints "bar1"\fR
-$obj foo             \fI\(-> prints "bar2"\fR
-$obj variable count  \fI\(-> error "unknown method variable"\fR
-$obj \fBdestroy\fR
-$obj foo             \fI\(-> error "unknown command obj"\fR
-.CE
-.SH "SEE ALSO"
-my(n), oo::class(n)
-.SH KEYWORDS
-base class, class, object, root class
-.\" Local variables:
-.\" mode: nroff
-.\" fill-column: 78
-.\" End: