How to make eclipse not auto-indent a block of code

Question

I like Eclipse's auto-indent function, but sometimes I've got some indentation I don't want it to correct, like

audioBuffer1[j] = (short) (VOLUME_REDUCER * ( inputBuffer[i] 
                  + ALPHA *   inputBuffer[i - echo1a] 
                  + ALPHA *   inputBuffer[i + echo1a]
                  - ALPHA *   inputBuffer[i - echo1b] 
                  - ALPHA *   inputBuffer[i + echo1b] 
                           ));

which gets corrected to something horrible. Is there a way of making the auto-indent function skip over some bits of code, using an @annotation or something?

Answer 1

You can put // at the end of the lines you don't want it to wrap.

audioBuffer1[j] = (short) (VOLUME_REDUCER * ( inputBuffer[i] // 
                  + ALPHA *   inputBuffer[i - echo1a] //
                  + ALPHA *   inputBuffer[i + echo1a] //
                  - ALPHA *   inputBuffer[i - echo1b] //
                  - ALPHA *   inputBuffer[i + echo1b] //
                           ));

Answer 2

For disabling auto-indent, see bug 193688 and bug 319532 (not before 3.7M2).
You will be able to set the preference to the Typing page to enable/disable smart indent on New Line. If disabled, it still indents to previous line.

---

Note: For format in general (since Eclipse3.6 JDT)

 class X {
   // disable-formatter
   void foo1() {}
   void foo2() {}
   // enable-formatter
   void bar1() {}
   // enable-formatter
   void bar2() {}
 }

The bug 27079 ("Tags for disabling/enabling code formatter") and its attached patch are addressing that particular feature (which is not exactly what you want here).

Answer 3

There isn't an annotation to control formatting behavior, but I find it helpful to turn off Edit -> Smart Insert Mode prior to inserting a block of code that you don't want to be messed with.