lambda finder available!

[maurizio cimadamore]

On 13/11/2010 06:09, Thomas Jung wrote:
> Hi Maurizio,
>
> nice feature. Could the message also contain the lambda expression?
> I've no idea about the compiler internals. Can you generate java code
> from the AST at this stage?
Nice idea, I will think about it - it certainly looks feasible.

> Hopefully IDEs will support batch conversions when lambda expressions
> are in Java.
Yeah - the compiler note can be used by IDE such as NetBeans to 
perform/suggest refactoring (similar to what we have done in project 
coin for diamond, multicatch and strings in switch).

Maurizio
> Thomas
>
> On 12 November 2010 18:55, Maurizio Cimadamore
> <maurizio.cimadamore at oracle.com>  wrote:
>> Hi,
>> I'd like to spend few time in order to discuss a feature that I pushed
>> while back and that probably went unnoticed (I just realized that the
>> commit message didn't contain anything too specific about that :-) ).
>>
>> The idea is to find all potential anonymous inner class creation
>> expressions that can be potentially replaced by a lambda expression. In
>> order to turn this 'lambda finder' feature on, you need to pass the
>> compiler the hidden flag '-XDidentifyLambdaCandidate=true'.
>>
>> This is an example of how the flag works; assume that you have the
>> following code:
>>
>> class Test {
>> Runnable r = new Runnable() { void run() { System.out.println("Hello!");
>> } };
>> }
>>
>> if you compile the above program with the hidden flag, javac will emit
>> the following note:
>>
>> Test.java:2: Note: This anonymous inner class creation can be turned
>> into a lambda expression.
>> Runnable r = new Runnable() { public void run() {
>> System.out.println("Hello!"); } };
>>                              ^
>>
>> This means that this feature can be helpful (I hope) in order to
>> refactor existing code base to use lambda expressions.
>>
>> Maurizio
>>
>>
>>