Deprecated opcodes

fetchmethod

Use the find_method opcode instead.

.imc file extension

http://xrl.us/jc4u

IMC vs. PIR 
Two names enter 
One name leaves 

/me giggles 
-- Chip Salzenberg

Deprecated APIs

• All Parrot_char_is_* functions from src/string_primitives.c will be removed. Please use Parrot_string_is_cclass() instead.

Deprecated methods

PGE

PGE::P6Rule is now a registered compiler, and should be used like so:

<@pmichaud> it's easy; instead of  $P0 = find_global "PGE", "p6rule"   
  one now does  $P0 = compreg "PGE::P6Rule"

This syntax is also true for PGE::Glob and PGE::P5Regexp

FUTURE changes

Not yet deprecated, but it's recommended to use the new syxtax and gradually change the old.

Chip's colon

Subroutine attributes will use the colon syntax:

.sub foo method, @MULTI(x,y)    => .sub foo :method :multi(x,y)
.sub foo @ANON, @LOAD           => .sub foo :anon :load

The new syntax uses no comma separators and all sub attributes are lower case and prefixed by a colon.

Class name IDs

... will require a dot in front

$P0 = new Integer               => $P0 = new .Integer

Assignment syntax with opcodes [#36283]

When the first argument of an opcode is OUT, then the assignment syntax will be allowed, as it is today.

In any other case (i.e. INOUT, IN), this will become a syntax error. For example:

$S0 = print
$P0 = substr 1, 2, "x"

Will have to be:

print $S0
substr $P0, 1, 2, "x"

Assignment Syntax

Currently, = is used for both assignment and aliasing. Chip says that, once this change is in effect, we'll use the following syntax:

P0 := P1      # aliasing:   P0 and P1 point to same PMC
P0 := opcode  # aliasing:   P0 points to PMC returned by opcode
P0 = ...      # assignment: modifies P0, NO MATTER WHAT '...' IS

S0 := S1      # aliasing:   S0 and S1 point to same header
S0 := opcode  # aliasing:   S0 points to header returned by opcode
S0 = ...      # assignment: modifies S0, NO MATTER WHAT '...' IS

I0 := ...     # ILLEGAL
I0 = ...      # assignment: modifies I0

N0 := ...     # ILLEGAL
N0 = ...      # assignment: modifies N0