+1 from me for removing IProject from lexer related elements and one 
highlighter for all versions


I think removing IProject from code is very good idea. In general it would be 
nice to decouple lexer/parser code from Eclipse api as much as possible. I can 
imagine that lexer/parser/ast source code would be interesting as separate 
bundles without Eclipse/DLTK/WST dependencies.


At the moment I cannot imagine any problem with only one highlighter. Parser 
will do the validation and that should be enough from user point.


Michal

________________________________
Od: pdt-dev-boun...@eclipse.org <pdt-dev-boun...@eclipse.org> w imieniu 
użytkownika thierry blind <thierrybl...@msn.com>
Wysłane: 11 sierpnia 2016 16:44
Do: pdt-dev@eclipse.org
Temat: [pdt-dev] remove project notion from all php lexers

Hi team,
I have a technical question :)
While I worked on bug 498877, I saw that the lexers need project informations 
for various operations (like to retrieve task tags defined for a specific 
project or to retrieve the PHP version of a project to decide which highlighter 
version to use, ...).
Sadly there are cases where lexers are created on-the-fly by eclipse to do some 
specific operations (document reparsing, reconciling or workspace builds are 
done on temporary&buffered documents for example) that are "detached" from any 
project notion.
Technically speaking, in those cases we work with project properties set to 
null ;)
So I would like to remove in the future all traces of "project" properties 
inside of php tokenizer, highlighters, PhpScriptRegion, PhpTokenContainer,... 
as it is not the way to go (looking how eclipse works). A good example is the 
hacky way used to set the project for document lexers in the 
PHPStructuredEditor class :
PhpSourceParser.editFile.set(resource);
Clearly that's a hack to find a way to provide a project value to lexers 
created on-the-fly by eclipse ;)

For now in the PDT lexers, project informations seem only necessary to :
- see if a project supports ASP tags (is this still used?)
- retrieve task tags defined per project (patch for bug 498877 will remove that)
- choose the highlighter version depending on project settings

So my question is:

why do we actually need a highlighter per php version? Why just not use the 
highlighter for the most recent supported php version (7.1)?
Is there any reason to not highlight most recently added php keywords on older 
php versions (even if not "supported")?
It would simplify a lot of code just to use one highlighter + php tokenizer + 
phpdoc scanner everywhere ;)

Thierry.

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