Re: [python] [patch] Add is_valid to several classes

[Eli Zaretskii <eliz@gnu.org>]

> From: Phil Muldoon <pmuldoon@redhat.com>
> Date: Wed, 16 Mar 2011 16:02:44 +0000
> 
> --- a/gdb/NEWS
> +++ b/gdb/NEWS
> @@ -38,6 +38,10 @@
>  
>  * Python scripting
>  
> +  ** Symbols, Symbol Table, Symbol Table and Line, Object Files,
> +     Inferior, Inferior Thread, Blocks, and Block Iterator APIs now
> +     have an is_valid method.
> +

This part is okay.

> +@defmethod Inferior is_valid
> +Returns true if the @code{gdb.Inferior} object is valid, false if
           ^^^^                                             ^^^^^
You mean @code{true} and @code{false}, right?  These are Python
symbols, aren't they?

Same comment on the other uses of "true" and "false".

> +A @code{gdb.Objfile} object can become invalid if the object file it
> +refers to does not exist in @value{GDBN} any longer.

"File does not exist in GDB" sounds awkward: GDB is not a filesystem.
How about "file is not loaded in GDB" instead?

> +Returns true if the @code{gdb.Block} object is valid, false if not. A
                                                                     ^^
Two spaces.

> +@code{gdb.Block} supports via the Python method @code{iter} function.

Did you really mean to say "Python method `iter' function"?  I think
either "method" or "function", no?

> +A @code{gdb.Symbol} object can become invalid if the symbol it refers
> +to does not exist in @value{GDBN} any longer.

How can a symbol cease to exist?

> +if not.  A @code{gdb.Symtab_and_line} object can become invalid if the
> +Symbol table and line object it refers to does not exist in
> +@value{GDBN} any longer.

Likewise here: does GDB unload symtabs once they were loaded?

> +A @code{gdb.Symtab} object can become invalid if the symbol table it
> +refers to does not exist in @value{GDBN} any longer.

And here.

Thanks.