package com.lexicalscope.fluentreflection;

 import org.apache.commons.lang3.builder.EqualsBuilder;

 import org.apache.commons.lang3.builder.HashCodeBuilder;

 import org.hamcrest.Description;

 import org.hamcrest.Matcher;

 final class MatcherReturnType extends ReflectionMatcher<FluentMember> {

     private final Matcher<? super FluentClass<?>> returnTypeMatcher;

     public MatcherReturnType(final Matcher<? super FluentClass<?>> returnTypeMatcher) {

         this.returnTypeMatcher = returnTypeMatcher;

     }

     @Override

     protected boolean matchesSafely(final FluentMember item) {

         final FluentClass<?> actualReturnType = item.type();

         if (actualReturnType == null) {

             return false;

         }

         return returnTypeMatcher.matches(actualReturnType);

     }

     @Override

     public void describeTo(final Description description) {

         description.appendText("callable with return ").appendDescriptionOf(returnTypeMatcher);

     }

     @Override

     public final boolean equals(final Object that) {

         if (that != null && that.getClass().equals(this.getClass())) {

             return new EqualsBuilder()

                     .append(returnTypeMatcher, ((MatcherReturnType) that).returnTypeMatcher)

                     .isEquals();

         }

         return false;

     }

     @Override

     public final int hashCode() {

         return new HashCodeBuilder().append(returnTypeMatcher).toHashCode();

     }

 }