[4기 - 김영주] 1~2주차 과제: 계산기 구현 미션 제출합니다. (5차)

.gitattributes

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+#
+# https://help.github.com/articles/dealing-with-line-endings/
+#
+# Linux start script should use lf
+/gradlew        text eol=lf
+
+# These are Windows script files and should use crlf
+*.bat           text eol=crlf
+

.gitignore

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+### Intellij ###
+# Covers JetBrains IDEs: IntelliJ, RubyMine, PhpStorm, AppCode, PyCharm, CLion, Android Studio, WebStorm and Rider
+# Reference: https://intellij-support.jetbrains.com/hc/en-us/articles/206544839
+.idea
+
+# User-specific stuff
+.idea/**/workspace.xml
+.idea/**/tasks.xml
+.idea/**/usage.statistics.xml
+.idea/**/dictionaries
+.idea/**/shelf
+
+# AWS User-specific
+.idea/**/aws.xml
+
+# Generated files
+.idea/**/contentModel.xml
+
+# Sensitive or high-churn files
+.idea/**/dataSources/
+.idea/**/dataSources.ids
+.idea/**/dataSources.local.xml
+.idea/**/sqlDataSources.xml
+.idea/**/dynamic.xml
+.idea/**/uiDesigner.xml
+.idea/**/dbnavigator.xml
+
+# Gradle
+.idea/**/gradle.xml
+.idea/**/libraries
+
+# Gradle and Maven with auto-import
+# When using Gradle or Maven with auto-import, you should exclude module files,
+# since they will be recreated, and may cause churn.  Uncomment if using
+# auto-import.
+# .idea/artifacts
+# .idea/compiler.xml
+# .idea/jarRepositories.xml
+# .idea/modules.xml
+# .idea/*.iml
+# .idea/modules
+# *.iml
+# *.ipr
+
+# CMake
+cmake-build-*/
+
+# Mongo Explorer plugin
+.idea/**/mongoSettings.xml
+
+# File-based project format
+*.iws
+
+# IntelliJ
+out/
+
+# mpeltonen/sbt-idea plugin
+.idea_modules/
+
+# JIRA plugin
+atlassian-ide-plugin.xml
+
+# Cursive Clojure plugin
+.idea/replstate.xml
+
+# SonarLint plugin
+.idea/sonarlint/
+
+# Crashlytics plugin (for Android Studio and IntelliJ)
+com_crashlytics_export_strings.xml
+crashlytics.properties
+crashlytics-build.properties
+fabric.properties
+
+# Editor-based Rest Client
+.idea/httpRequests
+
+# Android studio 3.1+ serialized cache file
+.idea/caches/build_file_checksums.ser
+
+### Intellij Patch ###
+# Comment Reason: https://github.com/joeblau/gitignore.io/issues/186#issuecomment-215987721
+
+# *.iml
+# modules.xml
+# .idea/misc.xml
+# *.ipr
+
+# Sonarlint plugin
+# https://plugins.jetbrains.com/plugin/7973-sonarlint
+.idea/**/sonarlint/
+
+# SonarQube Plugin
+# https://plugins.jetbrains.com/plugin/7238-sonarqube-community-plugin
+.idea/**/sonarIssues.xml
+
+# Markdown Navigator plugin
+# https://plugins.jetbrains.com/plugin/7896-markdown-navigator-enhanced
+.idea/**/markdown-navigator.xml
+.idea/**/markdown-navigator-enh.xml
+.idea/**/markdown-navigator/
+
+# Cache file creation bug
+# See https://youtrack.jetbrains.com/issue/JBR-2257
+.idea/$CACHE_FILE$
+
+# CodeStream plugin
+# https://plugins.jetbrains.com/plugin/12206-codestream
+.idea/codestream.xml
+
+# Azure Toolkit for IntelliJ plugin
+# https://plugins.jetbrains.com/plugin/8053-azure-toolkit-for-intellij
+.idea/**/azureSettings.xml
+
+### Java ###
+# Compiled class file
+*.class
+
+# Log file
+*.log
+
+# BlueJ files
+*.ctxt
+
+# Mobile Tools for Java (J2ME)
+.mtj.tmp/
+
+# Package Files #
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# virtual machine crash logs, see http://www.java.com/en/download/help/error_hotspot.xml
+hs_err_pid*
+replay_pid*
+
+### macOS ###
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+### macOS Patch ###
+# iCloud generated files
+*.icloud
+
+### Gradle ###
+.gradle
+**/build/
+!src/**/build/
+
+# Ignore Gradle GUI config
+gradle-app.setting
+
+# Avoid ignoring Gradle wrapper jar file (.jar files are usually ignored)
+!gradle-wrapper.jar
+
+# Avoid ignore Gradle wrappper properties
+!gradle-wrapper.properties
+
+# Cache of project
+.gradletasknamecache
+
+# Eclipse Gradle plugin generated files
+# Eclipse Core
+.project
+# JDT-specific (Eclipse Java Development Tools)
+.classpath
+
+### Gradle Patch ###
+# Java heap dump
+*.hprof
+
+# Ignore Gradle build output directory
+build

app/build.gradle

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+/*
+ * This file was generated by the Gradle 'init' task.
+ *
+ * This generated file contains a sample Java application project to get you started.
+ * For more details take a look at the 'Building Java & JVM projects' chapter in the Gradle
+ * User Manual available at https://docs.gradle.org/8.1.1/userguide/building_java_projects.html
+ */
+
+plugins {
+    // Apply the application plugin to add support for building a CLI application in Java.
+    id 'application'
+}
+
+repositories {
+    // Use Maven Central for resolving dependencies.
+    mavenCentral()
+}
+
+dependencies {
+    // Use JUnit Jupiter for testing.
+    testImplementation 'org.junit.jupiter:junit-jupiter:5.9.1'
+
+    // This dependency is used by the application.
+    implementation 'com.google.guava:guava:31.1-jre'
+}
+
+// Apply a specific Java toolchain to ease working on different environments.
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(17)
+    }
+}
+
+application {
+    // Define the main class for the application.
+    mainClass = 'calculator.App'
+}
+
+tasks.named('test') {
+    // Use JUnit Platform for unit tests.
+    useJUnitPlatform()
+}

app/src/main/java/calculator/App.java

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+package calculator;
+
+import static calculator.view.OutputView.printWithLineBreak;
+import static calculator.view.OutputView.showQuitMessage;
+
+import calculator.controller.MainController;
+import calculator.service.Calculator;
+import calculator.storage.HistoryStorage;
+
+public class App {
+
+    public static void main(String[] args) {
+        HistoryStorage historyStorage = new HistoryStorage();
+        Calculator calculator = new Calculator(historyStorage);
+        MainController mainController = new MainController(historyStorage, calculator);
+
+        try {
+            mainController.run();
+        } catch (Exception e) {
+            printWithLineBreak(e.getMessage());
+        } finally {
+            showQuitMessage();
+        }
+    }
+}

app/src/main/java/calculator/controller/MainController.java

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+package calculator.controller;
+
+import static calculator.entity.Menu.getSelectedMenu;
+import static calculator.view.InputView.inputMenuNumber;
+import static calculator.view.OutputView.showAllHistory;
+import static calculator.view.OutputView.showMenu;
+
+import calculator.entity.Menu;
+import calculator.service.Calculator;
+import calculator.storage.HistoryStorage;
+
+public class MainController {
+
+    private final HistoryStorage historyStorage;
+    private final Calculator calculator;
+
+    public MainController(HistoryStorage historyStorage, Calculator calculator) {
+        this.historyStorage = historyStorage;
+        this.calculator = calculator;
+    }
+
+    public void run() {
+        boolean isRunning = true;
+
+        while (isRunning) {
+            showMenu();
+
+            int menuNumber = inputMenuNumber();
+            Menu selectedMenu = getSelectedMenu(menuNumber);
+
+            isRunning = !selectedMenu.isQuit();
+
+            execute(selectedMenu);
+        }
+    }
+
+    private void execute(Menu selectedMenu) {
+        if (selectedMenu.isReadHistory()) {
+            String[] allHistory = historyStorage.readAllHistory();
+            showAllHistory(allHistory);
+
+            return;
+        }
+
+        if (selectedMenu.isCalculate()) {
+            calculator.calculate();
+        }
+    }
+}

app/src/main/java/calculator/entity/Expression.java

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+package calculator.entity;
+
+public class Expression {
+
+    private final Operator operator;
+    private final int operand1;
+    private final int operand2;
+
+    public Expression(Operator operator, int operand1, int operand2) {
+        this.operator = operator;
+        this.operand1 = operand1;
+        this.operand2 = operand2;
+    }
+
+    public int evaluate() {
+        return operator.evaluate(operand1, operand2);
+    }
+}

app/src/main/java/calculator/entity/Menu.java

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+package calculator.entity;
+
+import calculator.exception.MenuInputException;
+import java.util.Arrays;
+
+public enum Menu {
+
+    READ_HISTORY(1, "조회"),
+    CALCULATE(2, "계산"),
+    QUIT(3, "종료");
+
+    private static final String NOT_EXIST_MENU_MESSAGE = "존재하지 않는 메뉴입니다.";
+    private final int number;
+    private final String name;
+
+    Menu(int number, String name) {
+        this.number = number;
+        this.name = name;
+    }
+
+    public static Menu getSelectedMenu(int selectedMenuNumber) {
+        return Arrays.stream(Menu.values())
+            .filter(menu -> selectedMenuNumber == menu.getNumber())
+            .findFirst()
+            .orElseThrow(() -> new MenuInputException(NOT_EXIST_MENU_MESSAGE));
+    }
+
+    public boolean isReadHistory() {
+        return this == Menu.READ_HISTORY;
+    }
+
+    public boolean isCalculate() {
+        return this == Menu.CALCULATE;
+    }
+
+    public boolean isQuit() {
+        return this == Menu.QUIT;
+    }
+
+    public int getNumber() {
+        return number;
+    }
+
+    @Override
+    public String toString() {
+        return number + "." + name;
+    }
+}