/*
    * Copyright (c) 2006 JMockit developers
    * This file is subject to the terms of the MIT license (see LICENSE.txt).
    */
   package mockit.internal.expectations;
   
   import edu.umd.cs.findbugs.annotations.NonNull;
   import edu.umd.cs.findbugs.annotations.Nullable;
   
  import java.util.ArrayList;
  import java.util.List;
  
  import mockit.internal.expectations.argumentMatching.ArgumentMatcher;
  import mockit.internal.expectations.argumentMatching.CaptureMatcher;
  import mockit.internal.expectations.argumentMatching.ClassMatcher;
  
  import org.checkerframework.checker.index.qual.NonNegative;
  
  public abstract class TestOnlyPhase extends Phase {
      boolean matchInstance;
      @Nullable
      List<ArgumentMatcher<?>> argMatchers;
      @Nullable
      Expectation currentExpectation;
  
      TestOnlyPhase(@NonNull PhasedExecutionState executionState) {
          super(executionState);
      }
  
      public final void addArgMatcher(@NonNull ArgumentMatcher<?> matcher) {
          getArgumentMatchers().add(matcher);
      }
  
      @NonNull
      private List<ArgumentMatcher<?>> getArgumentMatchers() {
          if (argMatchers == null) {
              argMatchers = new ArrayList<>();
          }
  
          return argMatchers;
      }
  
      final void moveArgMatcher(@NonNegative int originalMatcherIndex, @NonNegative int toIndex) {
          List<ArgumentMatcher<?>> matchers = getArgumentMatchers();
          int i = getMatcherPositionIgnoringNulls(originalMatcherIndex, matchers);
  
          for (i--; i < toIndex; i++) {
              matchers.add(i, null);
          }
      }
  
      @NonNegative
      private static int getMatcherPositionIgnoringNulls(@NonNegative int originalMatcherIndex,
              @NonNull List<ArgumentMatcher<?>> matchers) {
          int i = 0;
  
          for (int matchersFound = 0; matchersFound <= originalMatcherIndex; i++) {
              if (matchers.get(i) != null) {
                  matchersFound++;
              }
          }
  
          return i;
      }
  
      final void setExpectedSingleArgumentType(@NonNegative int parameterIndex, @NonNull Class<?> argumentType) {
          ArgumentMatcher<?> newMatcher = ClassMatcher.create(argumentType);
          getArgumentMatchers().set(parameterIndex, newMatcher);
      }
  
      final void setExpectedMultiArgumentType(@NonNegative int parameterIndex, @NonNull Class<?> argumentType) {
          CaptureMatcher<?> matcher = (CaptureMatcher<?>) getArgumentMatchers().get(parameterIndex);
          matcher.setExpectedType(argumentType);
      }
  
      void setMaxInvocationCount(int maxInvocations) {
          if (currentExpectation != null) {
              int currentMinimum = currentExpectation.constraints.minInvocations;
              int minInvocations = maxInvocations < 0 ? currentMinimum : Math.min(currentMinimum, maxInvocations);
              handleInvocationCountConstraint(minInvocations, maxInvocations);
          }
      }
  
      abstract void handleInvocationCountConstraint(int minInvocations, int maxInvocations);
  
      static boolean isEnumElement(@NonNull Object mock) {
          Object[] enumElements = mock.getClass().getEnumConstants();
  
          if (enumElements != null) {
              for (Object enumElement : enumElements) {
                  if (enumElement == mock) {
                      return true;
                  }
              }
          }
  
          return false;
      }
  }