On 19/12/2014 10:19 a.m., Kingsley wrote:
On Wednesday, 17 December 2014 at 21:05:05 UTC, Kingsley wrote:
Hi Bruno,
Thanks very much. I do have a couple of questions about DDT in
relation to my plugin.
Firstly - I'm not too familiar with parsing/lexing but at the moment
the Psi Structure I have implemented that comes from the DDT
parser/lexer is not in any kind of hierarchy. All the PsiElements are
available but all at the same level. Is this how the DDT parser
works? Or is it down to my implementation of the Parser/Lexer that
wraps it to create some hierarchy.
For intellij it's going to be vastly easier to have a hierarchy with
nested elements in order to get hold of a structure representing a
class or a function for example - in order to do things like get the
start and end lines of a class definition in order to apply code
folding and to use for searching for classes and stuff.
Secondly - how active it the development of DDT - does it keep up
with the D2 releases.
--Kingsley
After doing a bit more research it looks like I have to create the psi
hierarchy myself - my current psi structure is flat because I'm just
converting the DeeTokens into PsiElements directly. I've still got
some experimentation to do. On the plus side I implemented commenting,
code folding but everything else needs a psi hierarchy
I've done some more investigation and I do need to build the parser
myself in order to create the various constructs. I've made a start but
I haven't gotten very far yet because I don't fully understand the
correct way to proceed.
I also had a look at using the DeeParser - because it already does most
of what I want. However the intellij plugin wants a PsiParser which
returns an intellij ASTNode in the primary parse method. I can't see an
easy way to hook this up with DeeParser because the ParsedResult
although had a node method on it - gives back the wrong type of ASTNode.
Any pointers on how I might get the DeeParser to interface to an
intellij ASTNode would be appreciated.
Read my codebase again, it'll answer a lot of questions. Your parser is
different, but what it produces shouldn't be. and yes it supports
hierarchies.
