TOGoS <[EMAIL PROTECTED]> wrote:
[ anwser rearranged for readability ]
> --- Leopold Toetsch <[EMAIL PROTECTED]> wrote:
>> TOGoS wrote:
>>
>> > Why not extend this to properties, too?
>>
>> > foo.hello becomes
>> >
>> > 'hello'
>> > string
>> > as-property
>>
>> Because that's an attribute access:
>>
>> $P0 = getattribute foo, "hello"
> perl6-internals: the place to go to have people tell
> you things you already know and not actually answer
> your question at all.
???
Anyway - and to run the risk of stating again something you already know -
here is a more verbose explanation:
Perl has keyed access on hashes and arrays:
$v = @a[$k] and $v = %a{$k}
Both would translate to Parrot's:
v = a[k]
and the meaning "indexed" vs "hashed" access would be lost. To get that
information into the opcode, Dan proposed to construct keys with an
"as-xxx" bit to discern these two cases.
You asked to extend that to properties (which are actually attributes).
Well there is no ambiguity in accessing attributes. The attribute name
is a string. There is no need to complicate things and replace an access
with (mostly) constant strings by an extra key PMC which has to be
constructed first.
leo
