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setStyleSheet() error help

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  • JonBJ JonB

    @mrjj
    Yep. I liked @raven-worx 's:

    pre-parse the stylesheet data (e.g. using lex/yacc)

    Presumably he has in mind that I write the lex/yacc rules... ;-)

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by mrjj
    #9

    @JNBarchan
    Hehe well i guess if u know lex it's not huge effort needed but i
    have no clue as i have never used them.

    Anyway, i wanted to run
    http://csstidy.sourceforge.net/
    and see if it would report bad ccs. (with line no)

    JonBJ 1 Reply Last reply
    0
    • mrjjM mrjj

      @JNBarchan
      Hehe well i guess if u know lex it's not huge effort needed but i
      have no clue as i have never used them.

      Anyway, i wanted to run
      http://csstidy.sourceforge.net/
      and see if it would report bad ccs. (with line no)

      JonBJ Offline
      JonBJ Offline
      JonB
      wrote on last edited by JonB
      #10

      @mrjj
      I wouldn't be interested in anything other than whatever Qt setStyleSheet does or does not accept, regardless of whether it's "right" or "wrong".

      For the record, this question is inspired as a consequence of my post https://forum.qt.io/topic/84022/code-for-qinstallmessagehandler. I have been finding that setStyleSheet must be hitting qDebug() lines wherever it does not like what it sees.... If that could/happened to include info on what was wrong where, it would suffice for me.

      1 Reply Last reply
      0
      • mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by mrjj
        #11

        Hi
        me neither but if Q CSS is a true subset, any css validator will work :)
        Never got around to test it though.

        Sounds like something to check. You are right that it can say it found error for some Object but
        it lacks even the basic info on what object so i don't have high hopes.
        But ill cross fingers you find something interesting :)

        JonBJ 1 Reply Last reply
        0
        • mrjjM mrjj

          Hi
          me neither but if Q CSS is a true subset, any css validator will work :)
          Never got around to test it though.

          Sounds like something to check. You are right that it can say it found error for some Object but
          it lacks even the basic info on what object so i don't have high hopes.
          But ill cross fingers you find something interesting :)

          JonBJ Offline
          JonBJ Offline
          JonB
          wrote on last edited by
          #12

          @mrjj said in setStyleSheet() error help:

          Hi
          me neither but if Q CSS is a true subset, any css validator will work :)

          No, because the full CSS validator would allow through loads of things which the subset does not. And if Q CSS were a superset, it would object to stuff which was allowed. :)

          mrjjM 1 Reply Last reply
          0
          • JonBJ JonB

            @mrjj said in setStyleSheet() error help:

            Hi
            me neither but if Q CSS is a true subset, any css validator will work :)

            No, because the full CSS validator would allow through loads of things which the subset does not. And if Q CSS were a superset, it would object to stuff which was allowed. :)

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #13

            @JNBarchan
            Just tested it and its not a true subset.
            it had syntaxes the validator clearly didn't like even if valid for Qt.
            So it was just a pipe dream.

            1 Reply Last reply
            0
            • JonBJ JonB

              @mrjj
              Yep. I liked @raven-worx 's:

              pre-parse the stylesheet data (e.g. using lex/yacc)

              Presumably he has in mind that I write the lex/yacc rules... ;-)

              raven-worxR Offline
              raven-worxR Offline
              raven-worx
              Moderators
              wrote on last edited by raven-worx
              #14

              @JNBarchan said in setStyleSheet() error help:

              Presumably he has in mind that I write the lex/yacc rules... ;-)

              well i've posted the rules along with my post?!
              I've written a QSS parser myself based on common CSS lex/yacc rules found in some github repository. And it worked pretty well. It's of course also capable of showing you the exact line of the error and what it expected instead of the error.

              And the hardest part of lex/yacc is the writing of the rules, which you can take over. The C harness is mostly the same all the time and can be found in many examples on the web.

              QSS is not compatible to CSS. It just uses most of it's syntax ;)
              But actually this is just some adaption of the rules which shouldn't also be a big issue once you get used to the rules syntax.

              And also as a side note, the QSS parser has some issues/bugs and is by far not perfect. This results in that syntactically QSS is not parsed entirely.

              --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
              If you have a question please use the forum so others can benefit from the solution in the future

              mrjjM JonBJ 2 Replies Last reply
              1
              • raven-worxR raven-worx

                @JNBarchan said in setStyleSheet() error help:

                Presumably he has in mind that I write the lex/yacc rules... ;-)

                well i've posted the rules along with my post?!
                I've written a QSS parser myself based on common CSS lex/yacc rules found in some github repository. And it worked pretty well. It's of course also capable of showing you the exact line of the error and what it expected instead of the error.

                And the hardest part of lex/yacc is the writing of the rules, which you can take over. The C harness is mostly the same all the time and can be found in many examples on the web.

                QSS is not compatible to CSS. It just uses most of it's syntax ;)
                But actually this is just some adaption of the rules which shouldn't also be a big issue once you get used to the rules syntax.

                And also as a side note, the QSS parser has some issues/bugs and is by far not perfect. This results in that syntactically QSS is not parsed entirely.

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #15

                @raven-worx
                Ohh, that i completely miss. (and poster to)
                Thank you. That makes far easier. The rules can be used as is, or need some fiddling ?
                I had hoped QSS was a CSS subset as to cheat at bit :)

                raven-worxR 1 Reply Last reply
                0
                • mrjjM mrjj

                  @raven-worx
                  Ohh, that i completely miss. (and poster to)
                  Thank you. That makes far easier. The rules can be used as is, or need some fiddling ?
                  I had hoped QSS was a CSS subset as to cheat at bit :)

                  raven-worxR Offline
                  raven-worxR Offline
                  raven-worx
                  Moderators
                  wrote on last edited by
                  #16

                  @mrjj said in setStyleSheet() error help:

                  The rules can be used as is, or need some fiddling ?

                  they should be possible to use right away. But some parts might be missing, like the pseudo-control names and pseudo-states of the QWidget controls. And also the property selector for string-lists ~= is not part of CSS IIRC.

                  --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
                  If you have a question please use the forum so others can benefit from the solution in the future

                  1 Reply Last reply
                  1
                  • raven-worxR raven-worx

                    @JNBarchan said in setStyleSheet() error help:

                    Presumably he has in mind that I write the lex/yacc rules... ;-)

                    well i've posted the rules along with my post?!
                    I've written a QSS parser myself based on common CSS lex/yacc rules found in some github repository. And it worked pretty well. It's of course also capable of showing you the exact line of the error and what it expected instead of the error.

                    And the hardest part of lex/yacc is the writing of the rules, which you can take over. The C harness is mostly the same all the time and can be found in many examples on the web.

                    QSS is not compatible to CSS. It just uses most of it's syntax ;)
                    But actually this is just some adaption of the rules which shouldn't also be a big issue once you get used to the rules syntax.

                    And also as a side note, the QSS parser has some issues/bugs and is by far not perfect. This results in that syntactically QSS is not parsed entirely.

                    JonBJ Offline
                    JonBJ Offline
                    JonB
                    wrote on last edited by
                    #17

                    @raven-worx said in setStyleSheet() error help:

                    @JNBarchan said in setStyleSheet() error help:

                    Presumably he has in mind that I write the lex/yacc rules... ;-)

                    well i've posted the rules along with my post?!

                    I too missed that --- I assumed your hyperlinks on lex/yacc pointed to help for lex & yacc, now I see they are the rule files for Q CSS, got it!

                    Now I presume that Qt is actually using that lex/yacc to do its parsing. I believe that when lex/yacc fails to parse the input and falls into error case --- which I assume is where the qDebug() is in source code --- it does include filename/line number/context in input where failure occurred. It would be nice if the qDebug() message included that, it's all I need. This probably isn't the place to ask for that, just wondered if you can do magic and make it happen... :)

                    raven-worxR 1 Reply Last reply
                    0
                    • JonBJ JonB

                      @raven-worx said in setStyleSheet() error help:

                      @JNBarchan said in setStyleSheet() error help:

                      Presumably he has in mind that I write the lex/yacc rules... ;-)

                      well i've posted the rules along with my post?!

                      I too missed that --- I assumed your hyperlinks on lex/yacc pointed to help for lex & yacc, now I see they are the rule files for Q CSS, got it!

                      Now I presume that Qt is actually using that lex/yacc to do its parsing. I believe that when lex/yacc fails to parse the input and falls into error case --- which I assume is where the qDebug() is in source code --- it does include filename/line number/context in input where failure occurred. It would be nice if the qDebug() message included that, it's all I need. This probably isn't the place to ask for that, just wondered if you can do magic and make it happen... :)

                      raven-worxR Offline
                      raven-worxR Offline
                      raven-worx
                      Moderators
                      wrote on last edited by
                      #18

                      @JNBarchan
                      those are the rule files for CSS 2.1, not directly for QSS. And Qt doesn't use lex/yacc internally AFAIK.
                      See my previous post.

                      --- SUPPORT REQUESTS VIA CHAT WILL BE IGNORED ---
                      If you have a question please use the forum so others can benefit from the solution in the future

                      JonBJ 1 Reply Last reply
                      1
                      • raven-worxR raven-worx

                        @JNBarchan
                        those are the rule files for CSS 2.1, not directly for QSS. And Qt doesn't use lex/yacc internally AFAIK.
                        See my previous post.

                        JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by
                        #19

                        @raven-worx
                        Ah I see, again I misunderstood! Thanks.

                        1 Reply Last reply
                        0
                        • V Offline
                          V Offline
                          Vadi2
                          wrote on last edited by
                          #20

                          I'd be interested in a way to get more helpful error messages as well.

                          1 Reply Last reply
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