diff options
Diffstat (limited to 'src/utils/lombok/javac/java7/CommentCollectingScannerFactory.java')
| -rw-r--r-- | src/utils/lombok/javac/java7/CommentCollectingScannerFactory.java | 34 |
1 files changed, 29 insertions, 5 deletions
diff --git a/src/utils/lombok/javac/java7/CommentCollectingScannerFactory.java b/src/utils/lombok/javac/java7/CommentCollectingScannerFactory.java index 9a29528e..626d3d63 100644 --- a/src/utils/lombok/javac/java7/CommentCollectingScannerFactory.java +++ b/src/utils/lombok/javac/java7/CommentCollectingScannerFactory.java @@ -1,5 +1,5 @@ /* - * Copyright (C) 2011 The Project Lombok Authors. + * Copyright (C) 2011-2013 The Project Lombok Authors. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal @@ -29,17 +29,41 @@ import com.sun.tools.javac.util.Context; public class CommentCollectingScannerFactory extends ScannerFactory { + @SuppressWarnings("all") public static void preRegister(final Context context) { if (context.get(scannerFactoryKey) == null) { - context.put(scannerFactoryKey, new Context.Factory<ScannerFactory>() { - public ScannerFactory make() { + // Careful! There is voodoo magic here! + // + // Context.Factory is parameterized. make() is for javac6 and below; make(Context) is for javac7 and up. + // this anonymous inner class definition is intentionally 'raw' - the return type of both 'make' methods is 'T', + // which means the compiler will only generate the correct "real" override method (with returntype Object, which is + // the lower bound for T, as a synthetic accessor for the make with returntype ScannerFactory) for that make method which + // is actually on the classpath (either make() for javac6-, or make(Context) for javac7+). + // + // We normally solve this issue via src/stubs, with BOTH make methods listed, but for some reason the presence of a stubbed out + // Context (or even a complete copy, it doesn't matter) results in a really strange eclipse bug, where any mention of any kind + // of com.sun.tools.javac.tree.TreeMaker in a source file disables ALL usage of 'go to declaration' and auto-complete in the entire + // source file. + // + // Thus, in short: + // * Do NOT parameterize the anonymous inner class literal. + // * Leave the return types as 'j.l.Object'. + // * Leave both make methods intact; deleting one has no effect on javac6- / javac7+, but breaks the other. Hard to test for. + // * Do not stub com.sun.tools.javac.util.Context or any of its inner types, like Factory. + @SuppressWarnings("all") + class MyFactory implements Context.Factory { + // This overrides the javac6- version of make. + public Object make() { return new CommentCollectingScannerFactory(context); } - @Override public ScannerFactory make(Context c) { + // This overrides the javac7+ version. + public Object make(Context c) { return new CommentCollectingScannerFactory(c); } - }); + } + @SuppressWarnings("unchecked") Context.Factory<ScannerFactory> factory = new MyFactory(); + context.put(scannerFactoryKey, factory); } } |