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Inferring a redundant type parameter?


gcewing

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I have a class declared like this:

 

public class BaseBlockRenderer<BLOCK extends BaseBlock<TE>, TE extends TileEntity>
implements ISimpleBlockRenderingHandler
{
    BLOCK block;
    TE te;
    ...

 

where BaseBlock is declared as

 

public class BaseBlock<TE extends TileEntity> extends BlockContainer

...

 

This works, but it's a bit annoying that you have to specify the tile entity class explicitly when instantiating BaseBlockRenderer. Is there any way to arrange things so that the compiler can infer the TE parameter from the supplied block type? I.e. so that given

 

class MyBlock extends BaseBlock<MyTileEntity>

 

you can just write

BaseBlockRenderer<MyBlock>

instead of

BaseBlockRenderer<MyBlock, MyTileEntity>

, and still be able to declare things of type TE inside BaseBlockRenderer.

 

I've tried the following things, none of which work:

 

public class BaseBlockRenderer<BLOCK extends BaseBlock<TE extends TileEntity>>

  --- syntax error

 

public class BaseBlockRenderer<BLOCK extends BaseBlock<TE>>

  --- can't find name TE

 

<TE extends TileEntity> public class BaseBlockRenderer<BLOCK extends BaseBlock<TE>>

  --- syntax error

 

public <TE extends TileEntity> class BaseBlockRenderer<BLOCK extends BaseBlock<TE>>

  --- syntax error

 

public class <TE extends TileEntity> BaseBlockRenderer<BLOCK extends BaseBlock<TE>>

  --- syntax error

 

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