Re: [Pharo-users] modifying the compiler adding an alias for :=

Dec. 10, 2014

      Hi Erik,

You need to make sure you are using the right compiler. In a Pharo3 image,
you'll find two compilers: Opal and the old one.

In the old one, you need to change:

Scanner>>xColon

In RB/Opal, what you can try with your changes is to inspect:

RBParser parseExpression: 'a :> 5'

And, if you get a RBAssignmentNode, then it is working.

Thierry

2014-12-10 13:32 GMT+01:00 Erik Itter <erik.itter@gmail.com>:
...
Thanks, tried
scanSpecialCharacter
    | character |
    currentCharacter = $:
        ifTrue: [
            self step.
            ^ currentCharacter = $=
                ifTrue: [
                    self step.
                    RBAssignmentToken start: tokenStart]
                ifFalse: [ RBSpecialCharacterToken value: $: start:
tokenStart ]].
currentCharacter = $:
        ifTrue: [
            self step.
            ^ currentCharacter = $>
                ifTrue: [
                    self step.
                    RBAssignmentToken start: tokenStart]
                ifFalse: [ RBSpecialCharacterToken value: $: start:
tokenStart ]].
currentCharacter = $_ ifTrue: [
        self step.
        ^ RBShortAssignmentToken start: tokenStart ].
character := currentCharacter.
    self step.
    ^ RBSpecialCharacterToken value: character start: tokenStart
but while it does not seem to shred my image to pieces it also seems to
have no effect at all. I guess the UI components still check differently
and neither workplace nor SystemBrowser allow me to write code using the :>
operator
Am 10.12.2014 um 13:11 schrieb Thierry Goubier:
Hi,
If you are using the OpalCompiler (Pharo4, sure, Pharo3, I'm not so
sure), have a look at:
RBScanner>>scanSpecialCharacter
Thierry
2014-12-10 12:57 GMT+01:00 Erik Itter <erik.itter@gmail.com>:
...
Hi,
I need to modify the compiler adding ":>" as an alias for ":=" for
assignment. I have been reading all over the Compiler package but do not
find where a tokenizer parses for the assignement operator or where it is
defined.
Any hint where to start or do it is appreciated.
best regards
Erik