Added minecraft 1.12 pre7 support

src/main/java/amidst/clazz/real/RealClassBuilder.java

@@ -9,6 +9,9 @@
 import amidst.clazz.real.RealClassConstant.RealClassConstantType;
 import amidst.documentation.Immutable;
 
+/**
+ * See https://docs.oracle.com/javase/specs/jvms/se8/html/jvms-4.html#jvms-4.4.8
+ */
 @Immutable
 public class RealClassBuilder {
 	public RealClass construct(String realClassName, byte[] classData) throws RealClassCreationException {
@@ -139,8 +142,14 @@ private RealClassConstant<?> readConstant(
 			return readAnotherReference(stream, type);
 		case RealClassConstantType.NAME_AND_TYPE_DESCRIPTOR:
 			return readAnotherReference(stream, type);
+		case RealClassConstantType.METHOD_HANDLE:
+			return readMethodHandle(stream, type);
+		case RealClassConstantType.METHOD_TYPE:
+			return readMethodType(stream, type);
+		case RealClassConstantType.INVOKE_DYNAMIC:
+			return readInvokeDynamic(stream, type);
 		default:
-			return null;
+			throw new IOException("unknown constant type: " + type);
 		}
 	}
 
@@ -203,6 +212,26 @@ private RealClassConstant<ReferenceIndex> readAnotherReference(DataInputStream s
 		return new RealClassConstant<>(type, value);
 	}
 
+	private RealClassConstant<Void> readMethodHandle(DataInputStream stream, byte type) throws IOException {
+		stream.readByte();
+		stream.readUnsignedShort();
+		// return a dummy
+		return new RealClassConstant<Void>(type, null);
+	}
+
+	private RealClassConstant<Void> readMethodType(DataInputStream stream, byte type) throws IOException {
+		stream.readUnsignedShort();
+		// return a dummy
+		return new RealClassConstant<Void>(type, null);
+	}
+
+	private RealClassConstant<Void> readInvokeDynamic(DataInputStream stream, byte type) throws IOException {
+		stream.readUnsignedShort();
+		stream.readUnsignedShort();
+		// return a dummy
+		return new RealClassConstant<Void>(type, null);
+	}
+
 	private int readAccessFlags(DataInputStream stream) throws IOException {
 		return stream.readUnsignedShort();
 	}

src/main/java/amidst/clazz/real/RealClassConstant.java

@@ -19,6 +19,9 @@ public static enum RealClassConstantType {
 		public static final int METHOD_REFERENCE = 10;
 		public static final int INTERFACE_METHOD_REFERENCE = 11;
 		public static final int NAME_AND_TYPE_DESCRIPTOR = 12;
+		public static final int METHOD_HANDLE = 15;
+		public static final int METHOD_TYPE = 16;
+		public static final int INVOKE_DYNAMIC = 18;
 
 		public static boolean isQIncreasing(byte type) {
 			return type == LONG || type == DOUBLE;

src/main/java/amidst/clazz/real/RealClasses.java

@@ -11,7 +11,6 @@
 import java.util.zip.ZipFile;
 
 import amidst.documentation.Immutable;
-import amidst.logging.AmidstLogger;
 
 @Immutable
 public enum RealClasses {
@@ -72,8 +71,6 @@ private static RealClass readRealClass(String realClassName, BufferedInputStream
 				theStream.read(classData);
 				return REAL_CLASS_BUILDER.construct(realClassName, classData);
 			}
-		} catch (RealClassCreationException e) {
-			AmidstLogger.warn(e);
 		}
 		return null;
 	}

src/main/java/amidst/mojangapi/minecraftinterface/RecognisedVersion.java

@@ -23,7 +23,7 @@ public enum RecognisedVersion {
 	// TODO: Remove these versions before V1_0?
 	// TODO: stronghold reset on V1_9pre4?
 	UNKNOWN,
-	_1_12_pre3 ("1.12-pre3",  "ujrjoxmsrw[Lom;pj[J[[Jpf"),                                                                // matches the launcher version id: 1.12-pre3    
+	_1_12_pre7 ("1.12-pre7",  "ujrjoxmsrw[Lom;pj[J[[Jpf"),                                                                // matches the launcher version id: 1.12-pre7    1.12-pre6    1.12-pre5    1.12-pre4    1.12-pre3    
 	_1_12_pre2 ("1.12-pre2",  "uhrhovmqru[Lok;ph[J[[Jpd"),                                                                // matches the launcher version id: 1.12-pre2    
 	_1_12_pre1 ("1.12-pre1",  "ugrgoumprt[Loj;pg[J[[Jpc"),                                                                // matches the launcher version id: 1.12-pre1    
 	_17w18b    ("17w18b",     "tyqyommirl[Lob;oy[J[[Jou"),                                                                // matches the launcher version id: 17w18b