Merge branch 'feature/mapper-library' into dev0.6.1

10 files changed, 161 insertions, 412 deletions

diff --git a/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java b/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java
deleted file mode 100644
index e943c01..0000000
--- a/src/main/java/ftbsc/lll/exceptions/MappingNotFoundException.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package ftbsc.lll.exceptions;
-
-import ftbsc.lll.processor.tools.obfuscation.ObfuscationMapper;
-
-/**
- * Thrown upon failure to find the requested mapping within a loaded {@link ObfuscationMapper}.
- */
-public class MappingNotFoundException extends RuntimeException {
-
-	/**
-	 * Constructs a new mapping not found exception for the specified mapping.
-	 * @param mapping the relevant mapping
-	 */
-	public MappingNotFoundException(String mapping) {
-		super(String.format("Could not find mapping for %s!", mapping));
-	}
-
-	/**
-	 * Constructs a new mapping not found exception for the specified mapping
-	 * with the specified reason.
-	 * @param mapping the relevant mapping
-	 * @param reason the reason message
-	 */
-	public MappingNotFoundException(String mapping, String reason) {
-		this(mapping + ": " + reason);
-	}
-}
diff --git a/src/main/java/ftbsc/lll/processor/LilleroProcessor.java b/src/main/java/ftbsc/lll/processor/LilleroProcessor.java
index b1d1f1e..b693592 100644
--- a/src/main/java/ftbsc/lll/processor/LilleroProcessor.java
+++ b/src/main/java/ftbsc/lll/processor/LilleroProcessor.java
@@ -8,10 +8,9 @@ import ftbsc.lll.IInjector;
 import ftbsc.lll.exceptions.AmbiguousDefinitionException;
 import ftbsc.lll.exceptions.OrphanElementException;
 import ftbsc.lll.processor.annotations.*;
-import ftbsc.lll.processor.tools.ProcessorOptions;
-import ftbsc.lll.processor.tools.containers.ClassContainer;
-import ftbsc.lll.processor.tools.containers.InjectorInfo;
-import ftbsc.lll.processor.tools.containers.MethodContainer;
+import ftbsc.lll.processor.containers.ClassContainer;
+import ftbsc.lll.processor.containers.InjectorInfo;
+import ftbsc.lll.processor.containers.MethodContainer;
 import ftbsc.lll.proxies.ProxyType;
 import ftbsc.lll.proxies.impl.TypeProxy;
 
@@ -29,8 +28,8 @@ import java.io.PrintWriter;
 import java.util.*;
 import java.util.stream.Collectors;
 
-import static ftbsc.lll.processor.tools.ASTUtils.*;
-import static ftbsc.lll.processor.tools.JavaPoetUtils.*;
+import static ftbsc.lll.processor.utils.ASTUtils.*;
+import static ftbsc.lll.processor.utils.JavaPoetUtils.*;
 
 /**
  * The actual annotation processor behind the magic.
@@ -48,7 +47,7 @@ public class LilleroProcessor extends AbstractProcessor {
 	/**
 	 * An object representing the various options passed to the processor.
 	 */
-	public final ProcessorOptions options =  new ProcessorOptions(processingEnv);
+	private ProcessorOptions options = null;
 
 	/**
 	 * Method overriding default implementation to manually pass supported options.
@@ -60,6 +59,16 @@ public class LilleroProcessor extends AbstractProcessor {
 	}
 
 	/**
+	 * Returns the {@link ProcessorOptions} for this instance, creating the object if
+	 * it hasn't been already.
+	 * @return the {@link ProcessorOptions} for this instance
+	 */
+	public ProcessorOptions getProcessorOptions() {
+		if(this.options == null) this.options = new ProcessorOptions(this.processingEnv);
+		return this.options;
+	}
+
+	/**
 	 * Where the actual processing happens.
 	 * It filters through whatever annotated class it's fed, and checks whether it contains
 	 * the required information. It then generates injectors and a service provider for every
@@ -90,7 +99,7 @@ public class LilleroProcessor extends AbstractProcessor {
 				}
 			}
 		}
-		if (!this.options.noServiceProvider && !this.injectors.isEmpty()) {
+		if (!this.getProcessorOptions().noServiceProvider && !this.injectors.isEmpty()) {
 			generateServiceProvider();
 			return true;
 		} else return false;
@@ -134,7 +143,7 @@ public class LilleroProcessor extends AbstractProcessor {
 		//find class information
 		Patch patchAnn = cl.getAnnotation(Patch.class);
 		ClassContainer targetClass = ClassContainer.from(
-			patchAnn, Patch::value, patchAnn.innerName(), this.options
+			patchAnn, Patch::value, patchAnn.innerName(), this.getProcessorOptions()
 		);
 		//find package information
 		Element packageElement = cl.getEnclosingElement();
@@ -156,7 +165,7 @@ public class LilleroProcessor extends AbstractProcessor {
 		//take care of TypeProxies and FieldProxies first
 		for(VariableElement proxyVar : finders) {
 			ProxyType type = getProxyType(proxyVar);
-			if(type == ProxyType.METHOD && proxyVar.getAnnotation(Find.class).name().equals("")) {
+			if(type == ProxyType.METHOD && proxyVar.getAnnotation(Find.class).name().isEmpty()) {
 				//methods without a specified name will be handled later
 				methodFinders.add(proxyVar);
 				continue;
@@ -165,17 +174,17 @@ public class LilleroProcessor extends AbstractProcessor {
 			if(type == ProxyType.TYPE) {
 				//find and validate
 				ClassContainer clazz = ClassContainer.findOrFallback(
-					ClassContainer.from(cl, this.options),
+					ClassContainer.from(cl, this.getProcessorOptions()),
 					patchAnn,
 					proxyVar.getAnnotation(Find.class),
-					this.options
+					this.getProcessorOptions()
 				);
 				//types can be generated with a single instruction
 				constructorBuilder.addStatement(
 					"super.$L = $T.from($S, 0, $L)",
 					proxyVar.getSimpleName().toString(),
 					TypeProxy.class,
-					clazz.fqnObf, //use obf name, at runtime it will be obfuscated
+					clazz.data.nameMapped.replace('/', '.'), //use obf name, at runtime it will be obfuscated
 					clazz.elem == null ? 0 : mapModifiers(clazz.elem.getModifiers())
 				);
 			} else if(type == ProxyType.FIELD)
@@ -184,7 +193,7 @@ public class LilleroProcessor extends AbstractProcessor {
 					null,
 					null,
 					constructorBuilder,
-					this.options
+					this.getProcessorOptions()
 				);
 		}
 
@@ -215,11 +224,11 @@ public class LilleroProcessor extends AbstractProcessor {
 						.collect(Collectors.toList());
 
 				//throw exception if user is a moron and defined a finder and an injector with the same name
-				if(finderCandidates.size() != 0 && injectorCandidates.size() != 0)
+				if(!finderCandidates.isEmpty() && !injectorCandidates.isEmpty())
 					throw new AmbiguousDefinitionException(
 						String.format("Target specified user %s, but name was used by both a finder and injector.", targetAnn.of())
 					);
-				else if(finderCandidates.size() == 0 && injectorCandidates.size() == 0)
+				else if(finderCandidates.isEmpty() && injectorCandidates.isEmpty())
 					processingEnv.getMessager().printMessage(Diagnostic.Kind.WARNING,
 						String.format(
 							"Found orphan @Target annotation on method %s.%s pointing at method %s, it will be ignored!",
@@ -228,11 +237,11 @@ public class LilleroProcessor extends AbstractProcessor {
 							targetAnn.of()
 						)
 					);
-				else if(finderCandidates.size() == 0 && injectorCandidates.size() != 1)
+				else if(finderCandidates.isEmpty() && injectorCandidates.size() != 1)
 					throw new AmbiguousDefinitionException(
 						String.format("Found multiple candidate injectors for target %s::%s!", cl.getSimpleName(), tg.getSimpleName())
 					);
-				else if(injectorCandidates.size() == 0 && finderCandidates.size() != 1)
+				else if(injectorCandidates.isEmpty() && finderCandidates.size() != 1)
 					throw new AmbiguousDefinitionException(
 						String.format("Found multiple candidate finders for target %s::%s!", cl.getSimpleName(), tg.getSimpleName())
 					);
@@ -243,7 +252,7 @@ public class LilleroProcessor extends AbstractProcessor {
 						matchedInjectors.add(injector);
 						toGenerate.put(
 							String.format("%sInjector%d", cl.getSimpleName(), iterationNumber),
-							new InjectorInfo(injector, tg, targetAnn, this.options)
+							new InjectorInfo(injector, tg, targetAnn, this.getProcessorOptions())
 						);
 						iterationNumber++; //increment is only used by injectors
 					} else {
@@ -255,7 +264,7 @@ public class LilleroProcessor extends AbstractProcessor {
 							tg,
 							targetAnn,
 							constructorBuilder,
-							this.options
+							this.getProcessorOptions()
 						);
 					}
 				}
@@ -280,9 +289,13 @@ public class LilleroProcessor extends AbstractProcessor {
 				.addMethod(constructorBuilder.build())
 				.addMethod(buildStringReturnMethod("name", injName))
 				.addMethod(buildStringReturnMethod("reason", toGenerate.get(injName).reason))
-				.addMethod(buildStringReturnMethod("targetClass", this.options.obfuscateInjectorMetadata ? targetClass.fqnObf : targetClass.fqn))
-				.addMethod(buildStringReturnMethod("methodName", this.options.obfuscateInjectorMetadata ? target.nameObf : target.name))
-				.addMethod(buildStringReturnMethod("methodDesc", this.options.obfuscateInjectorMetadata ? target.descriptorObf : target.descriptor))
+				.addMethod(buildStringReturnMethod("targetClass", this.getProcessorOptions().obfuscateInjectorMetadata
+					? targetClass.data.nameMapped.replace('/', '.')
+					: targetClass.data.name.replace('/', '.')))
+				.addMethod(buildStringReturnMethod("methodName", this.getProcessorOptions().obfuscateInjectorMetadata
+					? target.data.nameMapped : target.data.signature.name))
+				.addMethod(buildStringReturnMethod("methodDesc", this.getProcessorOptions().obfuscateInjectorMetadata
+					? target.descriptorObf : target.data.signature.name))
 				.addMethods(generateDummies(cl))
 				.addMethod(generateInjector(toGenerate.get(injName), this.processingEnv))
 				.build();
diff --git a/src/main/java/ftbsc/lll/processor/tools/ProcessorOptions.java b/src/main/java/ftbsc/lll/processor/ProcessorOptions.java
index 0ef8a18..5972631 100644
--- a/src/main/java/ftbsc/lll/processor/tools/ProcessorOptions.java
+++ b/src/main/java/ftbsc/lll/processor/ProcessorOptions.java
@@ -1,16 +1,13 @@
-package ftbsc.lll.processor.tools;
+package ftbsc.lll.processor;
 
 import ftbsc.lll.IInjector;
-import ftbsc.lll.exceptions.InvalidResourceException;
-import ftbsc.lll.processor.tools.obfuscation.ObfuscationMapper;
+import ftbsc.lll.mapper.MapperProvider;
+import ftbsc.lll.mapper.tools.Mapper;
 
 import javax.annotation.processing.ProcessingEnvironment;
-import java.io.*;
-import java.net.URI;
-import java.net.URISyntaxException;
-import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 import java.util.HashSet;
+import java.util.List;
 import java.util.Set;
 
 /**
@@ -33,10 +30,10 @@ public class ProcessorOptions {
 	public final ProcessingEnvironment env;
 
 	/**
-	 * The {@link ObfuscationMapper} used to convert classes and variables
+	 * The {@link Mapper} used to convert classes and variables
 	 * to their obfuscated equivalent. Will be null when no mapper is in use.
 	 */
-	public final ObfuscationMapper mapper;
+	public final Mapper mapper;
 
 	/**
 	 * Whether the processor should issue warnings when compiling code anonymous
@@ -62,29 +59,10 @@ public class ProcessorOptions {
 	public ProcessorOptions(ProcessingEnvironment env) {
 		this.env = env;
 		String location = env.getOptions().get("mappingsFile");
-		if(location == null)
-			this.mapper = null;
-		else {
-			InputStream targetStream;
-			try {
-				URI target = new URI(location);
-				targetStream = target.toURL().openStream();
-			} catch(URISyntaxException | IOException e) {
-				//may be a local file path
-				File f = new File(location);
-				if(!f.exists())
-					throw new InvalidResourceException(location);
-				try {
-					targetStream = new FileInputStream(f);
-				} catch(FileNotFoundException ex) {
-					throw new InvalidResourceException(location);
-				}
-			}
-			//assuming its tsrg file
-			//todo: replace crappy homebaked parser with actual library
-			this.mapper = new ObfuscationMapper(new BufferedReader(new InputStreamReader(targetStream,
-				StandardCharsets.UTF_8)).lines());
-		}
+		if(location != null) {
+			List<String> lines = MapperProvider.fetchFromLocalOrRemote(location);
+			this.mapper = MapperProvider.getMapper(lines).getMapper(lines, true);
+		} else this.mapper = null;
 		this.anonymousClassWarning = parseBooleanArg(env.getOptions().get("anonymousClassWarning"), true);
 		this.obfuscateInjectorMetadata = parseBooleanArg(env.getOptions().get("obfuscateInjectorMetadata"), true);
 		this.noServiceProvider = parseBooleanArg(env.getOptions().get("noServiceProvider"), false);
diff --git a/src/main/java/ftbsc/lll/processor/tools/containers/ClassContainer.java b/src/main/java/ftbsc/lll/processor/containers/ClassContainer.java
index 2c10dd6..297349a 100644
--- a/src/main/java/ftbsc/lll/processor/tools/containers/ClassContainer.java
+++ b/src/main/java/ftbsc/lll/processor/containers/ClassContainer.java
@@ -1,9 +1,10 @@
-package ftbsc.lll.processor.tools.containers;
+package ftbsc.lll.processor.containers;
 
 import ftbsc.lll.exceptions.TargetNotFoundException;
+import ftbsc.lll.mapper.tools.data.ClassData;
 import ftbsc.lll.processor.annotations.Find;
 import ftbsc.lll.processor.annotations.Patch;
-import ftbsc.lll.processor.tools.ProcessorOptions;
+import ftbsc.lll.processor.ProcessorOptions;
 
 import javax.lang.model.element.Element;
 import javax.lang.model.element.TypeElement;
@@ -11,7 +12,7 @@ import javax.tools.Diagnostic;
 import java.lang.annotation.Annotation;
 import java.util.function.Function;
 
-import static ftbsc.lll.processor.tools.ASTUtils.*;
+import static ftbsc.lll.processor.utils.ASTUtils.*;
 
 /**
  * Container for information about a class.
@@ -20,15 +21,9 @@ import static ftbsc.lll.processor.tools.ASTUtils.*;
  */
 public class ClassContainer {
 	/**
-	 * The fully-qualified name of the class.
+	 * The {@link ClassData} for the class represented by this container.
 	 */
-	public final String fqn;
-
-	/**
-	 * The obfuscated fully-qualified name of the class.
-	 * If the mapper passed is null, then this will be identical to {@link #fqn}
-	 */
-	public final String fqnObf;
+	public final ClassData data;
 
 	/**
 	 * The {@link Element} corresponding to the class.
@@ -84,8 +79,7 @@ public class ClassContainer {
 					throw new TargetNotFoundException("class", inner);
 			}
 		}
-		this.fqn = fqnBuilder.toString();
-		this.fqnObf = findClassName(this.fqn, options);
+		this.data = getClassData(fqnBuilder.toString(), options.mapper);
 		this.elem = elem;
 	}
 
@@ -131,6 +125,6 @@ public class ClassContainer {
 	public static ClassContainer findOrFallback(ClassContainer fallback, Patch p, Find f, ProcessorOptions options) {
 		if(f == null) return ClassContainer.from(p, Patch::value, p.innerName(), options);
 		ClassContainer cl = ClassContainer.from(f, Find::value, f.innerName(), options);
-		return cl.fqn.equals("java.lang.Object") ? fallback : cl;
+		return cl.data.name.equals("java/lang/Object") ? fallback : cl;
 	}
 }
diff --git a/src/main/java/ftbsc/lll/processor/tools/containers/FieldContainer.java b/src/main/java/ftbsc/lll/processor/containers/FieldContainer.java
index 2dd2ecb..2299c93 100644
--- a/src/main/java/ftbsc/lll/processor/tools/containers/FieldContainer.java
+++ b/src/main/java/ftbsc/lll/processor/containers/FieldContainer.java
@@ -1,9 +1,11 @@
-package ftbsc.lll.processor.tools.containers;
+package ftbsc.lll.processor.containers;
 
 import ftbsc.lll.exceptions.AmbiguousDefinitionException;
+import ftbsc.lll.mapper.tools.MappingUtils;
+import ftbsc.lll.mapper.tools.data.FieldData;
 import ftbsc.lll.processor.annotations.Find;
 import ftbsc.lll.processor.annotations.Patch;
-import ftbsc.lll.processor.tools.ProcessorOptions;
+import ftbsc.lll.processor.ProcessorOptions;
 import org.objectweb.asm.Type;
 
 import javax.lang.model.element.TypeElement;
@@ -11,7 +13,7 @@ import javax.lang.model.element.VariableElement;
 import javax.lang.model.type.TypeKind;
 import javax.lang.model.type.TypeMirror;
 
-import static ftbsc.lll.processor.tools.ASTUtils.*;
+import static ftbsc.lll.processor.utils.ASTUtils.*;
 
 /**
  * Container for information about a field.
@@ -20,9 +22,9 @@ import static ftbsc.lll.processor.tools.ASTUtils.*;
  */
 public class FieldContainer {
 	/**
-	 * The name of the field.
+	 * The {@link FieldData} for the field represented by this container.
 	 */
-	public final String name;
+	public final FieldData data;
 
 	/**
 	 * The descriptor of the field.
@@ -30,12 +32,6 @@ public class FieldContainer {
 	public final String descriptor;
 
 	/**
-	 * The obfuscated name of the field.
-	 * If the mapper passed is null, then this will be identical to {@link #name}.
-	 */
-	public final String nameObf;
-
-	/**
 	 * The obfuscated descriptor of the field.
 	 * If the mapper passed is null, then this will be identical to {@link #descriptor}.
 	 */
@@ -66,15 +62,15 @@ public class FieldContainer {
 			if(descriptor == null)
 				throw new AmbiguousDefinitionException("Cannot use name-based lookups for fields of unverifiable classes!");
 			this.elem = null;
-			this.name = name;
 			this.descriptor = descriptor;
 		} else {
 			this.elem = (VariableElement) findMember(parent, name, descriptor, descriptor != null, true, options.env);
-			this.name = this.elem.getSimpleName().toString();
 			this.descriptor = descriptorFromType(this.elem.asType(), options.env);
+			name = this.elem.getSimpleName().toString();
 		}
-		this.descriptorObf = options.mapper == null ? this.descriptor : options.mapper.obfuscateType(Type.getType(this.descriptor)).getDescriptor();
-		this.nameObf = findMemberName(parent.fqn, this.name, null, options.mapper);
+		this.data = getFieldData(parent.data.name, name, options.mapper);
+		this.descriptorObf = options.mapper == null ? this.descriptor
+			: MappingUtils.mapType(Type.getType(this.descriptor), options.mapper, false).getDescriptor();
 	}
 
 	/**
@@ -94,7 +90,7 @@ public class FieldContainer {
 			ClassContainer.from((TypeElement) finder.getEnclosingElement(), options), patchAnn, f, options
 		);
 
-		String name = f.name().equals("") ? finder.getSimpleName().toString() : f.name();
+		String name = f.name().isEmpty() ? finder.getSimpleName().toString() : f.name();
 		String descriptor;
 		TypeMirror fieldType = getTypeFromAnnotation(f, Find::type, options.env);
 		if(fieldType.toString().equals("java.lang.Object")) {
@@ -104,7 +100,7 @@ public class FieldContainer {
 				descriptor = //jank af but this is temporary anyway
 					"L" + ClassContainer.from(
 						f, Find::type, f.typeInner(), options
-					).fqnObf.replace('.', '/') + ";";
+					).data.nameMapped + ";";
 			else descriptor = descriptorFromType(fieldType, options.env);
 		}
 
diff --git a/src/main/java/ftbsc/lll/processor/tools/containers/InjectorInfo.java b/src/main/java/ftbsc/lll/processor/containers/InjectorInfo.java
index 460401b..d56d846 100644
--- a/src/main/java/ftbsc/lll/processor/tools/containers/InjectorInfo.java
+++ b/src/main/java/ftbsc/lll/processor/containers/InjectorInfo.java
@@ -1,8 +1,8 @@
-package ftbsc.lll.processor.tools.containers;
+package ftbsc.lll.processor.containers;
 
 import ftbsc.lll.processor.annotations.Injector;
 import ftbsc.lll.processor.annotations.Target;
-import ftbsc.lll.processor.tools.ProcessorOptions;
+import ftbsc.lll.processor.ProcessorOptions;
 
 import javax.lang.model.element.ExecutableElement;
 
@@ -43,4 +43,4 @@ public class InjectorInfo {
 		this.reason = injector.getAnnotation(Injector.class).reason();
 		this.target = MethodContainer.from(targetStub, targetAnn, null, options);
 	}
-}
\ No newline at end of file
+}
diff --git a/src/main/java/ftbsc/lll/processor/tools/containers/MethodContainer.java b/src/main/java/ftbsc/lll/processor/containers/MethodContainer.java
index 714ee54..7d15599 100644
--- a/src/main/java/ftbsc/lll/processor/tools/containers/MethodContainer.java
+++ b/src/main/java/ftbsc/lll/processor/containers/MethodContainer.java
@@ -1,16 +1,18 @@
-package ftbsc.lll.processor.tools.containers;
+package ftbsc.lll.processor.containers;
 
 import ftbsc.lll.exceptions.AmbiguousDefinitionException;
 import ftbsc.lll.exceptions.TargetNotFoundException;
+import ftbsc.lll.mapper.tools.MappingUtils;
+import ftbsc.lll.mapper.tools.data.MethodData;
 import ftbsc.lll.processor.annotations.Find;
 import ftbsc.lll.processor.annotations.Patch;
 import ftbsc.lll.processor.annotations.Target;
-import ftbsc.lll.processor.tools.ProcessorOptions;
+import ftbsc.lll.processor.ProcessorOptions;
 
 import javax.lang.model.element.ExecutableElement;
 import javax.lang.model.element.TypeElement;
 
-import static ftbsc.lll.processor.tools.ASTUtils.*;
+import static ftbsc.lll.processor.utils.ASTUtils.*;
 
 /**
  * Container for information about a method.
@@ -19,24 +21,14 @@ import static ftbsc.lll.processor.tools.ASTUtils.*;
  */
 public class MethodContainer {
 	/**
-	 * The name of the method.
+	 * The {@link MethodData} for the method represented by this container.
 	 */
-	public final String name;
-
-	/**
-	 * The descriptor of the method.
-	 */
-	public final String descriptor;
-
-	/**
-	 * The obfuscated name of the method.
-	 * If the mapper passed is null, then this will be identical to {@link #name}.
-	 */
-	public final String nameObf;
+	public final MethodData data;
 
 	/**
 	 * The obfuscated descriptor of the field.
-	 * If the mapper passed is null, then this will be identical to {@link #descriptor}.
+	 * If the mapper passed is null, this will be identical to the one inside
+	 * {@link #data}.
 	 */
 	public final String descriptorObf;
 
@@ -68,18 +60,17 @@ public class MethodContainer {
 			if(descriptor == null)
 				throw new AmbiguousDefinitionException("Cannot use name-based lookups for methods of unverifiable classes!");
 			this.elem = null;
-			this.name = name;
-			this.descriptor = descriptor;
 		} else {
 			ExecutableElement tmp = (ExecutableElement) findMember(
 				parent, name, descriptor, descriptor != null && strict,false, options.env
 			);
 			this.elem = bridge ? findSyntheticBridge((TypeElement) this.parent.elem, tmp, options.env) : tmp;
-			this.name = this.elem.getSimpleName().toString();
-			this.descriptor = descriptorFromExecutableElement(this.elem, options.env);
+			name = this.elem.getSimpleName().toString();
+			descriptor = descriptorFromExecutableElement(this.elem, options.env);
 		}
-		this.descriptorObf = options.mapper == null ? this.descriptor : options.mapper.obfuscateMethodDescriptor(this.descriptor);
-		this.nameObf = findMemberName(parent.fqn, this.name, this.descriptor, options.mapper);
+		this.data = getMethodData(parent.data.name, name, descriptor, options.mapper);
+		this.descriptorObf = options.mapper == null ? this.data.signature.descriptor
+			: MappingUtils.mapMethodDescriptor(this.data.signature.descriptor, options.mapper, false);
 	}
 
 	/**
@@ -99,7 +90,7 @@ public class MethodContainer {
 		ClassContainer parent = ClassContainer.findOrFallback(
 			ClassContainer.from((TypeElement) stub.getEnclosingElement(), options), patchAnn, f, options
 		);
-		String name = !t.methodName().equals("")
+		String name = !t.methodName().isEmpty()
 			?	t.methodName() //name was specified in target
 			: stub.getSimpleName().toString();
 		String descriptor = t.strict()
diff --git a/src/main/java/ftbsc/lll/processor/tools/obfuscation/ObfuscationMapper.java b/src/main/java/ftbsc/lll/processor/tools/obfuscation/ObfuscationMapper.java
deleted file mode 100644
index 5938de3..0000000
--- a/src/main/java/ftbsc/lll/processor/tools/obfuscation/ObfuscationMapper.java
+++ /dev/null
@@ -1,225 +0,0 @@
-package ftbsc.lll.processor.tools.obfuscation;
-
-import ftbsc.lll.exceptions.AmbiguousDefinitionException;
-import ftbsc.lll.exceptions.MappingNotFoundException;
-import ftbsc.lll.tools.DescriptorBuilder;
-import org.objectweb.asm.Type;
-
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.atomic.AtomicReference;
-import java.util.stream.Collectors;
-import java.util.stream.Stream;
-
-/**
- * Parses a .tsrg file into a mapper capable of converting from
- * deobfuscated names to obfuscated ones.
- * Obviously, it may only be used at runtime if the .tsrg file is
- * included in the resources. However, in that case, I'd recommend
- * using the built-in Forge one and refrain from including an extra
- * resource for no good reason.
- * TODO: CSV format
- * @since 0.2.0
- */
-public class ObfuscationMapper {
-
-	/**
-	 * A Map using the deobfuscated names as keys,
-	 * holding information for that class as value.
-	 */
-	private final Map<String, ObfuscationData> mapper = new HashMap<>();
-
-	/**
-	 * The public constructor.
-	 * Should be passed a {@link Stream} of Strings, one representing each line.
-	 * Whether they contain line endings or not is irrelevant.
-	 * @param str a {@link Stream} of strings
-	 */
-	public ObfuscationMapper(Stream<String> str) {
-		AtomicReference<String> currentClass = new AtomicReference<>("");
-		str.forEach(l -> {
-			if(l == null) return;
-			if(l.startsWith("\t"))
-				mapper.get(currentClass.get()).addMember(l);
-			else {
-				String[] sp = l.split(" ");
-				ObfuscationData s = new ObfuscationData(sp[0], sp[1]);
-				currentClass.set(s.unobf);
-				mapper.put(s.unobf, s);
-			}
-		});
-	}
-
-	/**
-	 * Gets the obfuscated name of the class.
-	 * @param name the unobfuscated internal name of the desired class
-	 * @return the obfuscated name of the class
-	 * @throws MappingNotFoundException if no mapping is found
-	 */
-	public String obfuscateClass(String name)  {
-		ObfuscationData data = mapper.get(name.replace('.', '/'));
-		if(data == null)
-			throw new MappingNotFoundException(name);
-		else return data.obf;
-	}
-
-	/**
-	 * Gets the obfuscated name of a class member (field or method).
-	 * The method signature must be in this format: "methodName methodDescriptor",
-	 * with a space, because that's how it is in .tsrg files.
-	 * @param parentName the unobfuscated internal name of the parent class
-	 * @param memberName the field name or method signature
-	 * @param methodDescriptor the optional descriptor of the member, may be null or partial
-	 * @return the obfuscated name of the given member
-	 * @throws MappingNotFoundException if no mapping is found
-	 */
-	public String obfuscateMember(String parentName, String memberName, String methodDescriptor) {
-		ObfuscationData data = mapper.get(parentName.replace('.', '/'));
-		if(data == null)
-			throw new MappingNotFoundException(parentName + "::" + memberName);
-		return data.get(memberName, methodDescriptor);
-	}
-
-	/**
-	 * Obfuscates a method descriptor, replacing its class references
-	 * with their obfuscated counterparts.
-	 * @param descriptor a {@link String} containing the descriptor
-	 * @return the obfuscated descriptor
-	 * @since 0.5.1
-	 */
-	public String obfuscateMethodDescriptor(String descriptor) {
-		Type method = Type.getMethodType(descriptor);
-		Type[] arguments = method.getArgumentTypes();
-		Type returnType = method.getReturnType();
-
-		Type[] obfArguments = new Type[arguments.length];
-		for(int i = 0; i < obfArguments.length; i++)
-			obfArguments[i] = this.obfuscateType(arguments[i]);
-
-		return Type.getMethodDescriptor(this.obfuscateType(returnType), obfArguments);
-	}
-
-	/**
-	 * Given a {@link Type} it returns its obfuscated counterpart.
-	 * @param type the type in question
-	 * @return the obfuscated type
-	 * @since 0.5.1
-	 */
-	public Type obfuscateType(Type type) {
-		//unwrap arrays
-		Type unwrapped = type;
-		int arrayLevel = 0;
-		while(unwrapped.getSort() == org.objectweb.asm.Type.ARRAY) {
-			unwrapped = unwrapped.getElementType();
-			arrayLevel++;
-		}
-
-		//if it's a primitive no operation is needed
-		if(type.getSort() < org.objectweb.asm.Type.ARRAY)
-			return type;
-
-		String internalName = type.getInternalName();
-
-		String internalNameObf;
-		try {
-			internalNameObf = this.obfuscateClass(internalName);
-			return Type.getType(DescriptorBuilder.nameToDescriptor(internalNameObf, arrayLevel));
-		} catch(MappingNotFoundException e) {
-			return type;
-		}
-	}
-
-	/**
-	 * Private class used internally for storing information about each
-	 * class. It's private because there is no good reason anyone would
-	 * want to access this outside of this class.
-	 */
-	private static class ObfuscationData {
-		/**
-		 * The unobfuscated name (FQN with '/' instad of '.') of the class.
-		 */
-		private final String unobf;
-
-		/**
-		 * The obfuscated internal name (FQN with '/' instad of '.') of the class.
-		 */
-		private final String obf;
-
-		/**
-		 * A {@link Map} tying each member's name or signature to its
-		 * obfuscated counterpart.
-		 */
-		private final Map<String, String> members;
-
-		/**
-		 * The constructor. It takes in the names (obfuscated and non-obfuscated)
-		 * of a class.
-		 * @param unobf the unobfuscated name
-		 * @param obf the obfuscated name
-		 */
-		private ObfuscationData(String unobf, String obf) {
-			this.unobf = unobf;
-			this.obf = obf;
-			this.members = new HashMap<>();
-		}
-
-		/**
-		 * Adds a member to the target class.
-		 * For fields only the names are required; for methods,
-		 * this takes in the full signature ({@code name + " " + space}).
-		 * @param s the String representing the declaration line
-		 */
-		public void addMember(String s) {
-			String[] split = s.trim().split(" ");
-			if(split.length == 2) //field
-				members.put(split[0], split[1]);
-			else if (split.length == 3) //method
-				members.put(split[0] + " " + split[1], split[2]);
-		}
-
-		/**
-		 * Gets an obfuscated member given the method name and a method descriptor,
-		 * which may be partial (i.e. not include return type) or null if the member
-		 * is not a method.
-		 * @param memberName member name
-		 * @param methodDescriptor the method descriptor, or null if it's not a method
-		 * @return the requested obfuscated name, or null if nothing was found
-		 * @throws AmbiguousDefinitionException if not enough data was given to uniquely identify a mapping
-		 */
-		public String get(String memberName, String methodDescriptor) {
-
-			//find all keys that start with the name
-			List<String> candidates = members.keySet().stream().filter(
-				m -> m.split(" ")[0].equals(memberName)
-			).collect(Collectors.toList());
-
-			if(methodDescriptor != null) {
-				String signature = String.format("%s %s", memberName, methodDescriptor);
-				candidates = candidates.stream().filter(
-					m -> m.equals(signature)
-				).collect(Collectors.toList());
-			}
-
-			switch(candidates.size()) {
-				case 0:
-					throw new MappingNotFoundException(String.format(
-						"%s.%s%s",
-						this.unobf,
-						memberName,
-						methodDescriptor == null ? "" : "()"
-					));
-				case 1:
-					return members.get(candidates.get(0));
-				default:
-					throw new AmbiguousDefinitionException(String.format(
-						"Mapper could not uniquely identify member %s.%s%s, found %d!",
-						this.unobf,
-						memberName,
-						methodDescriptor == null ? "" : "()",
-						candidates.size()
-					));
-			}
-		}
-	}
-}
diff --git a/src/main/java/ftbsc/lll/processor/tools/ASTUtils.java b/src/main/java/ftbsc/lll/processor/utils/ASTUtils.java
index 0037886..04da70e 100644
--- a/src/main/java/ftbsc/lll/processor/tools/ASTUtils.java
+++ b/src/main/java/ftbsc/lll/processor/utils/ASTUtils.java
@@ -1,12 +1,15 @@
-package ftbsc.lll.processor.tools;
+package ftbsc.lll.processor.utils;
 
 import ftbsc.lll.exceptions.AmbiguousDefinitionException;
 import ftbsc.lll.exceptions.MappingNotFoundException;
 import ftbsc.lll.exceptions.NotAProxyException;
 import ftbsc.lll.exceptions.TargetNotFoundException;
+import ftbsc.lll.mapper.tools.Mapper;
+import ftbsc.lll.mapper.tools.data.ClassData;
+import ftbsc.lll.mapper.tools.data.FieldData;
+import ftbsc.lll.mapper.tools.data.MethodData;
 import ftbsc.lll.processor.annotations.Target;
-import ftbsc.lll.processor.tools.containers.ClassContainer;
-import ftbsc.lll.processor.tools.obfuscation.ObfuscationMapper;
+import ftbsc.lll.processor.containers.ClassContainer;
 import ftbsc.lll.proxies.ProxyType;
 
 import javax.annotation.processing.ProcessingEnvironment;
@@ -210,35 +213,59 @@ public class ASTUtils {
 	}
 
 	/**
-	 * Finds the class name and maps it to the correct format.
-	 * @param name the fully qualified name of the class to convert
-	 * @param options the {@link ProcessorOptions} to be used
+	 * Gets the {@link ClassData} corresponding to the given fully-qualified name,
+	 * or creates a false one with the same, non-obfuscated name twice.
+	 * @param name the internal name of the class to convert
+	 * @param mapper the {@link Mapper} to use, may be null
 	 * @return the fully qualified class name
-	 * @since 0.3.0
+	 * @since 0.6.1
 	 */
-	public static String findClassName(String name, ProcessorOptions options) {
+	public static ClassData getClassData(String name, Mapper mapper) {
 		try {
-			return options.mapper == null ? name : options.mapper.obfuscateClass(name).replace('/', '.');
-		} catch(MappingNotFoundException e) {
-			return name;
-		}
+			name = name.replace('.', '/'); //just in case
+			if(mapper != null)
+				return mapper.getClassData(name);
+		} catch(MappingNotFoundException ignored) {}
+		return new ClassData(name, name);
 	}
 
 	/**
-	 * Finds the member name and maps it to the correct format.
-	 * @param parentFQN the unobfuscated FQN of the parent class
-	 * @param memberName the name of the member
-	 * @param methodDescriptor the descriptor of the method, may be null
-	 * @param mapper the {@link ObfuscationMapper} to use, may be null
-	 * @return the internal class name
-	 * @since 0.3.0
+	 * Gets the {@link MethodData} corresponding to the method matching the given
+	 * name, parent and descriptor, or creates a dummy one with fake data if no
+	 * valid mapping is found.
+	 * @param parent the internal name of the parent class
+	 * @param name the name of the member
+	 * @param descriptor the descriptor of the method
+	 * @param mapper the {@link Mapper} to use, may be null
+	 * @return the fully qualified class name
+	 * @since 0.6.1
 	 */
-	public static String findMemberName(String parentFQN, String memberName, String methodDescriptor, ObfuscationMapper mapper) {
+	public static MethodData getMethodData(String parent, String name, String descriptor, Mapper mapper) {
 		try {
-			return mapper == null ? memberName : mapper.obfuscateMember(parentFQN, memberName, methodDescriptor);
-		} catch(MappingNotFoundException e) {
-			return memberName;
-		}
+			name = name.replace('.', '/'); //just in case
+			if(mapper != null)
+				return mapper.getMethodData(parent, name, descriptor);
+		} catch(MappingNotFoundException ignored) {}
+		return new MethodData(getClassData(name, mapper), name, name, descriptor);
+	}
+
+	/**
+	 * Gets the {@link FieldData} corresponding to the field matching the given
+	 * name and parent, or creates a dummy one with fake data if no valid
+	 * mapping is found.
+	 * @param parent the internal name of the parent class
+	 * @param name the name of the member
+	 * @param mapper the {@link Mapper} to use, may be null
+	 * @return the fully qualified class name
+	 * @since 0.6.1
+	 */
+	public static FieldData getFieldData(String parent, String name, Mapper mapper) {
+		try {
+			name = name.replace('.', '/'); //just in case
+			if(mapper != null)
+				return mapper.getFieldData(parent, name);
+		} catch(MappingNotFoundException ignored) {}
+		return new FieldData(getClassData(name, mapper), name, name);
 	}
 
 	/**
@@ -258,7 +285,7 @@ public class ASTUtils {
 		ClassContainer parent, String name, String descr,
 		boolean strict, boolean field, ProcessingEnvironment env) {
 		if(parent.elem == null)
-			throw new TargetNotFoundException("parent class", parent.fqn);
+			throw new TargetNotFoundException("parent class", parent.data.name);
 		//try to find by name
 		List<Element> candidates = parent.elem.getEnclosedElements()
 			.stream()
@@ -266,36 +293,37 @@ public class ASTUtils {
 			.filter(e -> e.getSimpleName().contentEquals(name))
 			.collect(Collectors.toList());
 
-		if(candidates.size() == 0)
-			throw new TargetNotFoundException(field ? "field" : "method", name, parent.fqn);
+		if(candidates.isEmpty())
+			throw new TargetNotFoundException(field ? "field" : "method", name, parent.data.name);
 
 		if(candidates.size() == 1 && (!strict || descr == null))
 			return candidates.get(0);
 
 		if(descr == null) {
-			throw new AmbiguousDefinitionException(
-				String.format("Found %d members named %s in class %s!", candidates.size(), name, parent.fqn)
-			);
+			throw new AmbiguousDefinitionException(String.format(
+				"Found %d members named %s in class %s!", candidates.size(), name, parent.data.name));
 		} else {
 			if(field) {
 				//fields can verify the signature for extra safety
 				//but there can only be 1 field with a given name
 				if(!descriptorFromType(candidates.get(0).asType(), env).equals(descr))
-					throw new TargetNotFoundException("field", String.format("%s with descriptor %s", name, descr), parent.fqn);
+					throw new TargetNotFoundException("field", String.format(
+						"%s with descriptor %s", name, descr), parent.data.name);
 			} else {
 				candidates = candidates.stream()
 					.map(e -> (ExecutableElement) e)
 					.filter(strict
 						? c -> descr.equals(descriptorFromExecutableElement(c, env))
-						: c -> descr.split("\\)")[0].equalsIgnoreCase(descriptorFromExecutableElement(c, env).split("\\)")[0])
+						: c -> descr.split("\\)")[0].equalsIgnoreCase(
+							descriptorFromExecutableElement(c, env).split("\\)")[0])
 					).collect(Collectors.toList());
 			}
-			if(candidates.size() == 0)
-				throw new TargetNotFoundException("method", String.format("%s %s", name, descr), parent.fqn);
+			if(candidates.isEmpty())
+				throw new TargetNotFoundException("method", String.format(
+					"%s %s", name, descr), parent.data.name);
 			if(candidates.size() > 1)
-				throw new AmbiguousDefinitionException(
-					String.format("Found %d methods named %s in class %s!", candidates.size(), name, parent.fqn)
-				);
+				throw new AmbiguousDefinitionException(String.format(
+					"Found %d methods named %s in class %s!", candidates.size(), name, parent.data.name));
 			return candidates.get(0);
 		}
 	}
diff --git a/src/main/java/ftbsc/lll/processor/tools/JavaPoetUtils.java b/src/main/java/ftbsc/lll/processor/utils/JavaPoetUtils.java
index 77bbc2b..629f77a 100644
--- a/src/main/java/ftbsc/lll/processor/tools/JavaPoetUtils.java
+++ b/src/main/java/ftbsc/lll/processor/utils/JavaPoetUtils.java
@@ -1,12 +1,13 @@
-package ftbsc.lll.processor.tools;
+package ftbsc.lll.processor.utils;
 
 import com.squareup.javapoet.*;
+import ftbsc.lll.processor.ProcessorOptions;
 import ftbsc.lll.processor.annotations.Find;
 import ftbsc.lll.processor.annotations.Target;
-import ftbsc.lll.processor.tools.containers.ClassContainer;
-import ftbsc.lll.processor.tools.containers.FieldContainer;
-import ftbsc.lll.processor.tools.containers.InjectorInfo;
-import ftbsc.lll.processor.tools.containers.MethodContainer;
+import ftbsc.lll.processor.containers.ClassContainer;
+import ftbsc.lll.processor.containers.FieldContainer;
+import ftbsc.lll.processor.containers.InjectorInfo;
+import ftbsc.lll.processor.containers.MethodContainer;
 import ftbsc.lll.proxies.ProxyType;
 import ftbsc.lll.proxies.impl.FieldProxy;
 import ftbsc.lll.proxies.impl.MethodProxy;
@@ -15,8 +16,8 @@ import javax.annotation.processing.ProcessingEnvironment;
 import javax.lang.model.element.*;
 import java.util.HashSet;
 
-import static ftbsc.lll.processor.tools.ASTUtils.getProxyType;
-import static ftbsc.lll.processor.tools.ASTUtils.mapModifiers;
+import static ftbsc.lll.processor.utils.ASTUtils.getProxyType;
+import static ftbsc.lll.processor.utils.ASTUtils.mapModifiers;
 
 /**
  * Collection of static utils that rely on JavaPoet to function.
@@ -65,13 +66,13 @@ public class JavaPoetUtils {
 		if(isMethod) {
 			MethodContainer mc = MethodContainer.from(stub, t, f, options);
 			descriptorObf = mc.descriptorObf;
-			nameObf = mc.nameObf;
+			nameObf = mc.data.nameMapped;
 			parent = mc.parent;
 			target = mc.elem;
 		} else {
 			FieldContainer fc = FieldContainer.from(var, options);
 			descriptorObf = fc.descriptorObf;
-			nameObf = fc.nameObf;
+			nameObf = fc.data.nameMapped;
 			parent = fc.parent;
 			target = fc.elem;
 		}
@@ -88,7 +89,7 @@ public class JavaPoetUtils {
 		con.addStatement(
 			"$L.setParent($S, $L)",
 			builderName,
-			parent.fqnObf,
+			parent.data.nameMapped.replace('/', '.'),
 			parent.elem == null ? 0 : mapModifiers(parent.elem.getModifiers())
 		);