1 files changed, 32 insertions, 0 deletions
diff --git a/java/java-analysis-impl/src/com/intellij/codeInspection/bytecodeAnalysis/asm/InterpreterExt.java b/java/java-analysis-impl/src/com/intellij/codeInspection/bytecodeAnalysis/asm/InterpreterExt.java
new file mode 100644
index 000000000000..5b284a074882
--- /dev/null
+++ b/java/java-analysis-impl/src/com/intellij/codeInspection/bytecodeAnalysis/asm/InterpreterExt.java
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.intellij.codeInspection.bytecodeAnalysis.asm;
+
+/**
+ * @author lambdamix
+ */
+public interface InterpreterExt<Data> { // self: Interpreter[_] =>
+
+  // init interpreter state by passing entry data
+  void init(Data previous);
+
+  // exit data after execution for edge to insn
+  // there are may be different outcomes for different edges if an instruction was branching one
+  Data getAfterData(int insn);
+
+  // merge two states
+  Data merge(Data data1, Data data2);
+}