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Functional Programming for Java 8+ and compatible with the modular system of Java 9+.
/*
* Copyright (C) 2021 iofairy,
*
* 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.iofairy.pattern.matcher;
import com.iofairy.lambda.R1;
import com.iofairy.lambda.RT1;
import com.iofairy.pattern.type.PatternNull1;
import com.iofairy.tuple.*;
import java.util.Objects;
/**
* Null2Matcher
*
* @since 0.2.0
*/
public class Null2Matcher implements NullMatcher {
private final R msg;
private final T1 value1;
private final boolean isMatch;
Null2Matcher(boolean isMatch, T1 value1, R msg) {
this.isMatch = isMatch;
this.value1 = value1;
this.msg = msg;
}
public Null3Matcher whenV(V matchValue, R1 computeValue, R1 action, R1, ? extends R> msgAction) {
Objects.requireNonNull(computeValue);
Objects.requireNonNull(msgAction);
if (!isMatch) {
R msg = msgAction.$(Tuple.of(value1));
if (matchValue == null) {
return new Null3Matcher<>(true, value1, null, msg);
}
NV newValue = computeValue.$(matchValue);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher whenV(V matchValue, R1 computeValue, R1, ? extends R> msgAction) {
return whenV(matchValue, computeValue, null, msgAction);
}
public Null3Matcher whenV(V matchValue, R1 computeValue, R1 action, R msg) {
Objects.requireNonNull(computeValue);
if (!isMatch) {
if (matchValue == null) {
return new Null3Matcher<>(true, value1, null, msg);
}
NV newValue = computeValue.$(matchValue);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher whenV(V matchValue, R1 computeValue, R msg) {
return whenV(matchValue, computeValue, null, msg);
}
public Null3Matcher whenW(PatternNull1 patternNull, R1 computeValue, R1 action, R1, ? extends R> msgAction) {
Objects.requireNonNull(computeValue);
Objects.requireNonNull(patternNull);
Objects.requireNonNull(msgAction);
if (!isMatch) {
R msg = msgAction.$(Tuple.of(value1));
NV newValue = computeValue.$(value1);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher whenW(PatternNull1 patternNull, R1 computeValue, R1, ? extends R> msgAction) {
return whenW(patternNull, computeValue, null, msgAction);
}
public Null3Matcher whenW(PatternNull1 patternNull, R1 computeValue, R1 action, R msg) {
Objects.requireNonNull(computeValue);
Objects.requireNonNull(patternNull);
if (!isMatch) {
NV newValue = computeValue.$(value1);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher whenW(PatternNull1 patternNull, R1 computeValue, R msg) {
return whenW(patternNull, computeValue, null, msg);
}
/*
* ########################################################################
* ************************************************************************
* ################ NullMatcher with throwing exception ###############
* ************************************************************************
* ########################################################################
*/
public Null3Matcher withV(V matchValue, RT1 computeValue, RT1 action, RT1, ? extends R, E> msgAction) throws E {
Objects.requireNonNull(computeValue);
Objects.requireNonNull(msgAction);
if (!isMatch) {
R msg = msgAction.$(Tuple.of(value1));
if (matchValue == null) {
return new Null3Matcher<>(true, value1, null, msg);
}
NV newValue = computeValue.$(matchValue);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher withV(V matchValue, RT1 computeValue, RT1, ? extends R, E> msgAction) throws E {
return withV(matchValue, computeValue, null, msgAction);
}
public Null3Matcher withV(V matchValue, RT1 computeValue, RT1 action, R msg) throws E {
Objects.requireNonNull(computeValue);
if (!isMatch) {
if (matchValue == null) {
return new Null3Matcher<>(true, value1, null, msg);
}
NV newValue = computeValue.$(matchValue);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher withV(V matchValue, RT1 computeValue, R msg) throws E {
return withV(matchValue, computeValue, null, msg);
}
public Null3Matcher withW(PatternNull1 patternNull, RT1 computeValue, RT1 action, RT1, ? extends R, E> msgAction) throws E {
Objects.requireNonNull(computeValue);
Objects.requireNonNull(patternNull);
Objects.requireNonNull(msgAction);
if (!isMatch) {
R msg = msgAction.$(Tuple.of(value1));
NV newValue = computeValue.$(value1);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher withW(PatternNull1 patternNull, RT1 computeValue, RT1, ? extends R, E> msgAction) throws E {
return withW(patternNull, computeValue, null, msgAction);
}
public Null3Matcher withW(PatternNull1 patternNull, RT1 computeValue, RT1 action, R msg) throws E {
Objects.requireNonNull(computeValue);
Objects.requireNonNull(patternNull);
if (!isMatch) {
NV newValue = computeValue.$(value1);
boolean doBreak = newValue == null || (action != null && action.$(newValue));
R localMsg = doBreak ? msg : null;
return new Null3Matcher<>(doBreak, value1, newValue, localMsg);
}
return new Null3Matcher<>(true, value1, null, this.msg);
}
public Null3Matcher withW(PatternNull1 patternNull, RT1 computeValue, R msg) throws E {
return withW(patternNull, computeValue, null, msg);
}
public Tuple2 orElse(R msg) {
R finalMsg = !isMatch ? msg : this.msg;
return Tuple.of(value1, finalMsg);
}
}