Method canPlaceOn

src/main/java/net/minecraft/block/BlockTorch.java:58–69

(World worldIn, BlockPos pos)

    }

    private boolean canPlaceOn(World worldIn, BlockPos pos)
    {
        if (World.doesBlockHaveSolidTopSurface(worldIn, pos))
        {
            return true;
        }
        else
        {
            Block block = worldIn.getBlockState(pos).getBlock();
            return block instanceof BlockFence || block == Blocks.glass || block == Blocks.cobblestone_wall || block == Blocks.stained_glass;
        }
    }

    public boolean canPlaceBlockAt(World worldIn, BlockPos pos)
    {