more exception classes

lib/X/Comp.pod

@@ -6,4 +6,25 @@
 
 Common role for compile-time errors.
 
+Note that since the backtrace of a compile time error generally shows
+routines from the compiler, not from user-space programs, the L<Backtrace>
+returned from the L<backtrace> method is not very informative. Instead
+the exception carries its own C<filename>, C<line> and C<column> attributes
+and public accessors.
+
+=head1 Methods
+
+=head2 filename
+
+The filename in which the compilation error occurred
+
+=head2 line
+
+The line number in which the compilation error occurred.
+
+=head2 column
+
+The column number of location where the compilation error occurred.
+(Rakudo does not implement that yet).
+
 =end pod

lib/X/IO/Chmod.pod

@@ -0,0 +1,13 @@
+=begin pod
+
+=TITLE class X::IO::Chmod
+
+    class X::IO::Chmod does X::IO is Exception
+
+Error class for failed C<chmod> calls.
+
+A typical error message is
+
+    Failed to set the mode of '/home/other' to '0o777': Permission denied
+
+=end pod

lib/X/IO/Rmdir.pod

@@ -0,0 +1,19 @@
+=begin pod
+
+=TITLE class X::IO::Rmdir
+
+    my class X::IO::Rmdir does X::IO is Exception
+
+Error class for failed L<&rmdir> operations.
+
+A typical error message is
+
+    Failed to remove the directory 'lib': Directory not empty
+
+=head1 Methods
+
+=head2 path
+
+Returns the path L<&rmdir> failed to remove
+
+=end pod

lib/X/IO/Unlink.pod

@@ -0,0 +1,19 @@
+=begin pod
+
+=TITLE class X::IO::Unlink
+
+    class X::IO::Unlink does X::IO is Exception
+
+Error class for failed L<&unlink> operation.
+
+A typica error message is
+
+    Failed to remove the file 'secret': Permission defined
+
+=head1 Methods
+
+=head2 path
+
+Returns the path that L<&unlink> failed to delete.
+
+=end pod

lib/X/NYI.pod

@@ -0,0 +1,27 @@
+=begin pod
+
+=TITLE class X::NYI
+
+    class X::NYI is Exception { }
+
+Error class for unimplemented features. I<NYI> stands for I<Not Yet
+Implemented>.
+
+If a Perl 6 compiler is not yet feature complete, it may throw an C<X::NYI>
+exception when a program uses a feature that it can detect is not yet
+implemented.
+
+A full-featured Perl 6 compiler must not throw such exceptions, but
+still provide the C<X::NYI> class for compatiblity reasons.
+
+A typical error message is
+
+    HyperWhatever is not yet implemented. Sorry.
+
+=head1 Methods
+
+=head2 features
+
+Returns a C<Str> describing the missing feature.
+
+=end pod

lib/X/Placeholder/Block.pod

@@ -0,0 +1,21 @@
+=begin pod
+
+=TITLE class X::Placeholder
+
+    class X::Placeholder::Block does X::Comp
+
+Thrown when a placeholder variable is used in a block that does not allow a
+signature (for example C<class A { $^foo }>.
+
+
+A typical error message is
+
+    Placeholder variable $^foo may not be used here because the surrounding block takes no signature
+
+=head1 Methods
+
+=head2 placeholder
+
+Returns the name of the (first) illegally used placeholder.
+
+=end pod