Hi!
Within your derived TextEditor::SyntaxHighlighter class, you should be
able to access currentBlock().blockNumber() - if you document does not
have any fancy layout items (images, tables), that one should correspond
to the line number (maybe off by one, don't remember).
You probably would also derive from TextEditor::TextDocument. From
there, you can start your async lexing/parsing operation if the document
is opened or changed. Connect to IDocument::filePathChanged and
Core::IDocument::contentsChanged. See e.g. CppEditorDocument for details
(this is more than you need, your version would look much simpler).
Nikolai
On 11/23/2017 10:26 AM, JeremY Larrieu wrote:
Hello
@Eike that's exactly what I wanna do. But I don't know where I can
connect tout this signals and the "highlightBlock" method doesn't
provide the line number to highlight nor from which file the line comes
from.
Jeremy
Le 23 nov. 2017 10:06, "JeremY Larrieu" <[email protected]
<mailto:[email protected]>> a écrit :
Hello,
Thanks for your answers.
I will look to semantic highlighting.
The purpose seems to fit my needs: syntax highlighting, symbol
detection, ... each time a file is opened or modified.
@Nikolai the lex file works with at most 4/5 states and was not made
to work line by line. Modifying it in this direction will not help
me to stick closer to the language when new features will come. I
will have to make too many updates to my lex file each time the
one's coming with the language is updated.
Thanks again.
Jeremy
Le 23 nov. 2017 09:19, "Nikolai Kosjar" <[email protected]
<mailto:[email protected]>> a écrit :
On 11/23/2017 07:29 AM, JeremY Larrieu wrote:
Hello,
I'm working on making a plugin to support a specific
language: Anubis.
I've started the highlighting part and I saw that QtCreator
is making syntax highlighting line by line instead of making
it "globally" for the whole file.
I just wanna know, how can I use the Bison/Flex files, used
to check syntax for Anubis language, to make syntax
highlighting in QtCreator.
Knowing that most of the tokens declared in the Flex file
can be multiline, making a lexer, working line by line, able
to detect those tokens is hard and the code is too "verbose".
I've tried to adapt what I've found in Bison/Flex files to
make a syntax highlighter, but it's really painful and it
makes further updates harder.
If I was able to apply highlighting on the whole file (not
line by line), it were simpler and I could use it to make
some other functionalities at the same time: code
completion, code analysis, symbol detection, ...
Do you have an idea on how I can make syntax highlighting
without rewriting a full lexer ?
Thanks in advance.
Jeremy
Hi!
I guess you've found TextEditor::SyntaxHighlighter, which does
the line by line highlighting with highlightBlock(). For C++ and
multi-line tokens (e.g. C comments) we call our custom lexer for
the current line with the lexer state from the line before. If
flex provides such a state based yylex() equivalent, this might
work.
The alternative is to use
SemanticHighlighter::incrementalApplyExtraAdditionalFormats().
With this one, you can for example start parsing in a worker
thread and provide the highlighting information as a stream of
TextEditor::HighlightingResult items.
Nikolai
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