I will need to actually perform method invocations during execution to

be able to pass/get the correct underlying types of variables for the
virtual method lookup.

src/main/java/info/sigterm/deob/ClassFile.java

@@ -185,11 +185,6 @@ public class ClassFile
 		methods.buildInstructionGraph();
 	}
 	
-	public void buildCallGraph()
-	{
-		methods.buildCallGraph();
-	}
-	
 	public boolean instanceOf(ClassFile other)
 	{
 		return this == other || interfaces.instanceOf(other) || (getParent() != null && getParent().instanceOf(other));

src/main/java/info/sigterm/deob/Method.java

@@ -222,14 +222,6 @@ public class Method
 			code.buildInstructionGraph();
 	}
 	
-	public void buildCallGraph()
-	{
-		Code code = getCode();
-
-		if (code != null)
-			code.buildCallGraph();
-	}
-	
 	public void clearCallGraph()
 	{
 		callsTo.clear();

src/main/java/info/sigterm/deob/Methods.java

@@ -79,10 +79,4 @@ public class Methods
 		for (Method m : methods)
 			m.buildInstructionGraph();
 	}
-	
-	public void buildCallGraph()
-	{
-		for (Method m : methods)
-			m.buildCallGraph();
-	}
 }

src/main/java/info/sigterm/deob/attributes/Code.java

@@ -68,9 +68,4 @@ public class Code extends Attribute
 	{
 		instructions.buildInstructionGraph();
 	}
-	
-	public void buildCallGraph()
-	{
-		instructions.buildCallGraph();
-	}
 }

src/main/java/info/sigterm/deob/attributes/code/Instruction.java

@@ -195,10 +195,6 @@ public abstract class Instruction
 	{
 	}
 	
-	public void buildCallGraph()
-	{
-	}
-
 	public abstract void execute(Frame e);
 	
 	/* does this terminate a block? */

src/main/java/info/sigterm/deob/attributes/code/Instructions.java

@@ -183,12 +183,6 @@ public class Instructions
 		for (Instruction i : instructions)
 			i.buildInstructionGraph();
 	}
-	
-	public void buildCallGraph()
-	{
-		for (Instruction i : instructions)
-			i.buildCallGraph();
-	}
 
 	public Code getCode()
 	{

src/main/java/info/sigterm/deob/attributes/code/instructions/InvokeVirtual.java

@@ -1,6 +1,7 @@
 package info.sigterm.deob.attributes.code.instructions;
 
 import info.sigterm.deob.ClassFile;
+import info.sigterm.deob.ClassGroup;
 import info.sigterm.deob.attributes.code.Instruction;
 import info.sigterm.deob.attributes.code.InstructionType;
 import info.sigterm.deob.attributes.code.Instructions;
@@ -74,6 +75,9 @@ public class InvokeVirtual extends Instruction implements InvokeInstruction
 		StackContext object = stack.pop();
 		ins.pop(object);
 		
+		// the method being invoked, looked up dynamically based on the type
+		//info.sigterm.deob.Method executedMethod = findVirtualMethod(object.getType());
+		
 		handleExceptions(frame);
 		
 		if (!method.getNameAndType().isVoid())
@@ -87,6 +91,31 @@ public class InvokeVirtual extends Instruction implements InvokeInstruction
 		frame.addInstructionContext(ins);
 	}
 	
+	private info.sigterm.deob.Method findVirtualMethod(Type type)
+	{
+		// invokevirtual 'method' on 'type', see if we can find the actual method that would be invoked based on the type of the object
+		ClassGroup group = this.getInstructions().getCode().getAttributes().getClassFile().getGroup();
+		
+		ClassFile otherClass = group.findClass(type.type);
+		if (otherClass == null)
+			return null; // not our class
+		
+		// now find the method with the same signature as 'method' on this class, or subclass
+		return findMethodFromClass(otherClass);
+	}
+	
+	private info.sigterm.deob.Method findMethodFromClass(ClassFile clazz)
+	{
+		if (clazz == null)
+			return null;
+		
+		info.sigterm.deob.Method m = clazz.findMethod(method.getNameAndType());
+		if (m != null)
+			return m;
+		
+		return findMethodFromClass(clazz.getParent());
+	}
+	
 	private void handleExceptions(Frame frame)
 	{
 		// jump to instruction handlers that can catch exceptions here
@@ -95,6 +124,7 @@ public class InvokeVirtual extends Instruction implements InvokeInstruction
 			Instruction start = e.getStart(),
 					end = e.getEnd();
 			
+			// XXX this relies on pc?
 			// [start, end)
 			if (this.getPc() >= start.getPc() && this.getPc() < end.getPc())
 			{