Compiler internal error: com.google.common.css.compiler.ast.CssMixinNode cannot be cast to com.google.common.css.compiler.ast.CssDeclarationNode

[Hochhaus, Andy]

Hello,

Are mixins allowed to be declared in one file and called from another? With the compiler built from HEAD I get a "Compiler internal error" but with an older version of the compiler this works just fine.

Best,

Andy

Detailed steps to reproduce:

ahochhaus@ahochhaus-pc:~/test$ cat def.gss 

@defmixin spriteUrl() {

  background: url('sprite.png') no-repeat;

}

ahochhaus@ahochhaus-pc:~/test$ cat call.gss 

.example {

  @mixin spriteUrl();

}

ahochhaus@ahochhaus-pc:~/test$ java -jar closure-stylesheets.jar def.gss call.gss

Compiler internal error: com.google.common.css.compiler.ast.CssMixinNode cannot be cast to com.google.common.css.compiler.ast.CssDeclarationNode

java.lang.ClassCastException: com.google.common.css.compiler.ast.CssMixinNode cannot be cast to com.google.common.css.compiler.ast.CssDeclarationNode

        at com.google.common.css.compiler.passes.DisallowDuplicateDeclarations.enterRuleset(DisallowDuplicateDeclarations.java:69)

        at com.google.common.css.compiler.ast.DefaultVisitController$VisitRulesetState.doVisit(DefaultVisitController.java:875)

        at com.google.common.css.compiler.ast.DefaultVisitController.startVisit(DefaultVisitController.java:2028)

        at com.google.common.css.compiler.passes.DisallowDuplicateDeclarations.runPass(DisallowDuplicateDeclarations.java:80)

        at com.google.common.css.compiler.passes.PassRunner.runPasses(PassRunner.java:147)

        at com.google.common.css.compiler.commandline.DefaultCommandLineCompiler.parseAndPrint(DefaultCommandLineCompiler.java:130)

        at com.google.common.css.compiler.commandline.DefaultCommandLineCompiler.compile(DefaultCommandLineCompiler.java:116)

        at com.google.common.css.compiler.commandline.DefaultCommandLineCompiler.execute(DefaultCommandLineCompiler.java:157)

        at com.google.common.css.compiler.commandline.ClosureCommandLineCompiler.executeJob(ClosureCommandLineCompiler.java:335)

        at com.google.common.css.compiler.commandline.ClosureCommandLineCompiler.main(ClosureCommandLineCompiler.java:400)

ahochhaus@ahochhaus-pc:~/test$ cat def.gss call.gss > combined.gss

ahochhaus@ahochhaus-pc:~/test$ java -jar closure-stylesheets.jar combined.gss 

.example{background:url('sprite.png') no-repeat}

[Ian Flanigan]

It could indeed be a bug. Can you put all of that good info into an issue on GitHub:

https://github.com/google/closure-stylesheets/issues

If you can tell me from what revision (or even date) the working version was built, I can try to see what has changed.

Thanks,

Ian

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[Hochhaus, Andy]

Thanks Ian.

Issue submitted: https://github.com/google/closure-stylesheets/issues/70

I know it is an old compiler, but the working version was build from HEAD on Dec 23, 2014.

Best,

Andy