feat: initial support for 'invoke-custom' instruction (#384)

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/data/ICallSite.java

@@ -0,0 +1,12 @@
+package jadx.api.plugins.input.data;
+
+import java.util.List;
+
+import jadx.api.plugins.input.data.annotations.EncodedValue;
+
+public interface ICallSite {
+
+	List<EncodedValue> getValues();
+
+	void load();
+}

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/data/IMethodHandle.java

@@ -0,0 +1,12 @@
+package jadx.api.plugins.input.data;
+
+public interface IMethodHandle {
+
+	MethodHandleType getType();
+
+	IFieldData getFieldRef();
+
+	IMethodRef getMethodRef();
+
+	void load();
+}

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/data/IMethodProto.java

@@ -0,0 +1,10 @@
+package jadx.api.plugins.input.data;
+
+import java.util.List;
+
+public interface IMethodProto {
+
+	String getReturnType();
+
+	List<String> getArgTypes();
+}

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/data/MethodHandleType.java

@@ -0,0 +1,26 @@
+package jadx.api.plugins.input.data;
+
+public enum MethodHandleType {
+	STATIC_PUT,
+	STATIC_GET,
+	INSTANCE_PUT,
+	INSTANCE_GET,
+	INVOKE_STATIC,
+	INVOKE_INSTANCE,
+	INVOKE_DIRECT,
+	INVOKE_CONSTRUCTOR,
+	INVOKE_INTERFACE;
+
+	public boolean isField() {
+		switch (this) {
+			case STATIC_PUT:
+			case STATIC_GET:
+			case INSTANCE_PUT:
+			case INSTANCE_GET:
+				return true;
+
+			default:
+				return false;
+		}
+	}
+}

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/data/annotations/EncodedType.java

@@ -15,6 +15,8 @@ public enum EncodedType {
 	ENCODED_ENUM,
 	ENCODED_FIELD,
 	ENCODED_METHOD,
+	ENCODED_METHOD_TYPE,
+	ENCODED_METHOD_HANDLE,
 	ENCODED_ARRAY,
 	ENCODED_ANNOTATION
 }

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/data/impl/FieldRefHandle.java

@@ -0,0 +1,37 @@
+package jadx.api.plugins.input.data.impl;
+
+import jadx.api.plugins.input.data.IFieldData;
+import jadx.api.plugins.input.data.IMethodHandle;
+import jadx.api.plugins.input.data.IMethodRef;
+import jadx.api.plugins.input.data.MethodHandleType;
+
+public class FieldRefHandle implements IMethodHandle {
+
+	private final IFieldData fieldRef;
+	private final MethodHandleType type;
+
+	public FieldRefHandle(MethodHandleType type, IFieldData fieldRef) {
+		this.fieldRef = fieldRef;
+		this.type = type;
+	}
+
+	@Override
+	public MethodHandleType getType() {
+		return type;
+	}
+
+	@Override
+	public IFieldData getFieldRef() {
+		return fieldRef;
+	}
+
+	@Override
+	public IMethodRef getMethodRef() {
+		return null;
+	}
+
+	@Override
+	public void load() {
+		// already loaded
+	}
+}

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/data/impl/MethodRefHandle.java

@@ -0,0 +1,42 @@
+package jadx.api.plugins.input.data.impl;
+
+import jadx.api.plugins.input.data.IFieldData;
+import jadx.api.plugins.input.data.IMethodHandle;
+import jadx.api.plugins.input.data.IMethodRef;
+import jadx.api.plugins.input.data.MethodHandleType;
+
+public class MethodRefHandle implements IMethodHandle {
+
+	private final IMethodRef methodRef;
+	private final MethodHandleType type;
+
+	public MethodRefHandle(MethodHandleType type, IMethodRef methodRef) {
+		this.methodRef = methodRef;
+		this.type = type;
+	}
+
+	@Override
+	public MethodHandleType getType() {
+		return type;
+	}
+
+	@Override
+	public IMethodRef getMethodRef() {
+		return methodRef;
+	}
+
+	@Override
+	public IFieldData getFieldRef() {
+		return null;
+	}
+
+	@Override
+	public void load() {
+		methodRef.load();
+	}
+
+	@Override
+	public String toString() {
+		return type + ": " + methodRef;
+	}
+}

jadx-plugins/jadx-plugins-api/src/main/java/jadx/api/plugins/input/insns/InsnData.java

@@ -2,6 +2,7 @@ package jadx.api.plugins.input.insns;
 
 import org.jetbrains.annotations.Nullable;
 
+import jadx.api.plugins.input.data.ICallSite;
 import jadx.api.plugins.input.data.IFieldData;
 import jadx.api.plugins.input.data.IMethodRef;
 import jadx.api.plugins.input.insns.custom.ICustomPayload;
@@ -36,6 +37,8 @@ public interface InsnData {
 
 	IMethodRef getIndexAsMethod();
 
+	ICallSite getIndexAsCallSite();
+
 	@Nullable
 	ICustomPayload getPayload();
 }