Weird minecraft code

gistfile1.java

public boolean renderBlockByRenderType(Block par1Block, int par2, int par3,
  	int par4) {
	int l = par1Block.getRenderType();

	if (l == -1) {
		return false;
	} else {
		par1Block.setBlockBoundsBasedOnState(this.blockAccess, par2, par3,
				par4);
		this.setRenderBoundsFromBlock(par1Block);

		switch (l) {
		// regex: ' : \(l == ([\d]+) \?' replace: ';\ncase \1: return' :::
		// IMPORTANT: REMEMBER THIS ON FIRST line!
		case 0:
			return this.renderStandardBlock(par1Block, par2, par3, par4);
		case 4:
			return this.renderBlockFluids(par1Block, par2, par3, par4);
		case 31:
			return this.renderBlockLog(par1Block, par2, par3, par4);
		case 1:
			return this.renderCrossedSquares(par1Block, par2, par3, par4);
		case 2:
			return this.renderBlockTorch(par1Block, par2, par3, par4);
		case 20:
			return this.renderBlockVine(par1Block, par2, par3, par4);
		case 11:
			return this.renderBlockFence((BlockFence) par1Block, par2,
					par3, par4);
		case 39:
			return this.renderBlockQuartz(par1Block, par2, par3, par4);
		case 5:
			return this
					.renderBlockRedstoneWire(par1Block, par2, par3, par4);
		case 13:
			return this.renderBlockCactus(par1Block, par2, par3, par4);
		case 9:
			return this.renderBlockMinecartTrack((BlockRailBase) par1Block,
					par2, par3, par4);
		case 19:
			return this.renderBlockStem(par1Block, par2, par3, par4);
		case 23:
			return this.renderBlockLilyPad(par1Block, par2, par3, par4);
		case 6:
			return this.renderBlockCrops(par1Block, par2, par3, par4);
		case 3:
			return this.renderBlockFire((BlockFire) par1Block, par2, par3,
					par4);
		case 8:
			return this.renderBlockLadder(par1Block, par2, par3, par4);
		case 7:
			return this.renderBlockDoor(par1Block, par2, par3, par4);
		case 10:
			return this.renderBlockStairs((BlockStairs) par1Block, par2,
					par3, par4);
		case 27:
			return this.renderBlockDragonEgg((BlockDragonEgg) par1Block,
					par2, par3, par4);
		case 32:
			return this.renderBlockWall((BlockWall) par1Block, par2, par3,
					par4);
		case 12:
			return this.renderBlockLever(par1Block, par2, par3, par4);
		case 29:
			return this.renderBlockTripWireSource(par1Block, par2, par3,
					par4);
		case 30:
			return this.renderBlockTripWire(par1Block, par2, par3, par4);
		case 14:
			return this.renderBlockBed(par1Block, par2, par3, par4);
		case 15:
			return this.renderBlockRepeater(
					(BlockRedstoneRepeater) par1Block, par2, par3, par4);
		case 36:
			return this.renderBlockRedstoneLogic(
					(BlockRedstoneLogic) par1Block, par2, par3, par4);
		case 37:
			return this.renderBlockComparator((BlockComparator) par1Block,
					par2, par3, par4);
		case 16:
			return this
					.renderPistonBase(par1Block, par2, par3, par4, false);
		case 17:
			return this.renderPistonExtension(par1Block, par2, par3, par4,
					true);
		case 18:
			return this.renderBlockPane((BlockPane) par1Block, par2, par3,
					par4);
		case 21:
			return this.renderBlockFenceGate((BlockFenceGate) par1Block,
					par2, par3, par4);
		case 24:
			return this.renderBlockCauldron((BlockCauldron) par1Block,
					par2, par3, par4);
		case 33:
			return this.renderBlockFlowerpot((BlockFlowerPot) par1Block,
					par2, par3, par4);
		case 35:
			return this.renderBlockAnvil((BlockAnvil) par1Block, par2,
					par3, par4);
		case 25:
			return this.renderBlockBrewingStand(
					(BlockBrewingStand) par1Block, par2, par3, par4);
		case 26:
			return this.renderBlockEndPortalFrame(
					(BlockEndPortalFrame) par1Block, par2, par3, par4);
		case 28:
			return this.renderBlockCocoa((BlockCocoa) par1Block, par2,
					par3, par4);
		case 34:
			return this.renderBlockBeacon((BlockBeacon) par1Block, par2,
					par3, par4);
		case 38:
			return this.renderBlockHopper((BlockHopper) par1Block, par2,
					par3, par4);
		default:
			return FMLRenderAccessLibrary.renderWorldBlock(this,
					blockAccess, par2, par3, par4, par1Block, l);
		}