platform/lang-impl/src/com/intellij/codeInsight/dataflow/DfaInstance.java

   1 /*
   2  * Copyright 2000-2007 JetBrains s.r.o.
   3  * Licensed under the Apache License, Version 2.0 (the "License");
   4  * you may not use this file except in compliance with the License.
   5  * You may obtain a copy of the License at
   6  *
   7  * http://www.apache.org/licenses/LICENSE-2.0
   8  *
   9  * Unless required by applicable law or agreed to in writing, software
  10  * distributed under the License is distributed on an "AS IS" BASIS,
  11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12  * See the License for the specific language governing permissions and
  13  * limitations under the License.
  14  */
  15 package com.intellij.codeInsight.dataflow;
  16
  17 import com.intellij.codeInsight.controlflow.Instruction;
  18 import org.jetbrains.annotations.NotNull;
  19
  20 public interface DfaInstance<E> {
  21   // Invariant: fun must create new instance of DFAMap if modifies it
  22   DFAMap<E> fun(DFAMap<E> e, Instruction instruction);
  23
  24   @NotNull
  25   DFAMap<E> initial();
  26
  27   boolean isForward();
  28 }