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‎JsonToKotlin.iml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<module type="PLUGIN_MODULE" version="4">
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<component name="DevKit.ModuleBuildProperties" url="file://$MODULE_DIR$/resources/META-INF/plugin.xml" />
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<component name="NewModuleRootManager" inherit-compiler-output="true">
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<exclude-output />
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<content url="file://$MODULE_DIR$">
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<sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/resources" type="java-resource" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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</component>
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</module>

‎resources/META-INF/plugin.xml‎

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<idea-plugin>
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<id>wu.seal.tool.jsontokotlin</id>
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<name>JsonToKotlinClass</name>
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<version>1.0.1</version>
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<vendor email="[email protected]" url="https://www.github.com/wuseal">Seal</vendor>
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<description><![CDATA[
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An plugin for Kotlin to convert Json String into Kotlin data class code<br>
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<em>Kotlin</em>
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<em>Json</em>
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]]></description>
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<change-notes><![CDATA[
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Fix keyboard shortcut bugs<br>
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]]>
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</change-notes>
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<!-- please see http://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/build_number_ranges.html for description -->
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<idea-version since-build="145.0"/>
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<!-- please see http://www.jetbrains.org/intellij/sdk/docs/basics/getting_started/plugin_compatibility.html
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on how to target different products -->
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<depends>com.intellij.modules.lang</depends>
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<extensions defaultExtensionNs="com.intellij">
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<!-- Add your extensions here -->
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</extensions>
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<actions>
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<action id="wu.seal.wu.seal.jsontokotlin.makekotlindata" class="wu.seal.jsontokotlin.MakeKotlinClassAction" text="Convert Json Into Kotlin Class" description="convert a json string data into kotlin data class" >
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<add-to-group group-id="GenerateGroup" anchor="last"/>
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<keyboard-shortcut keymap="$default" first-keystroke="alt k"/>
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</action>
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<!--<action id="Myplugin.Dialogs" class="" text="Show _Dialog" description="A test menu item" />-->
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</actions>
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<application-components>
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<component>
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<implementation-class>wu.seal.jsontokotlin.TestApplication</implementation-class>
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</component>
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</application-components>
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</idea-plugin>

‎src/wu/seal/jsontokotlin/KotlinMaker.java‎

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package wu.seal.jsontokotlin;
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import com.google.gson.*;
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import org.jetbrains.annotations.NotNull;
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import java.util.HashSet;
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import java.util.Map;
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import java.util.Set;
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/**
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* Created by seal.wu on 2017/8/21.
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*/
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public class KotlinMaker {
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private final static Gson gson = new Gson();
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private String className;
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private JsonElement inputElement;
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private Set<String> toBeAppend = new HashSet<String>();
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public KotlinMaker(String className, String inputText) {
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this.inputElement = gson.fromJson(inputText, JsonElement.class);
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this.className = className;
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}
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public KotlinMaker(String className, JsonElement jsonElement) {
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this.inputElement = jsonElement;
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this.className = className;
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}
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public String makeKotlinData() {
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StringBuilder stringBuilder = new StringBuilder();
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stringBuilder.append("\n");
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JsonElement jsonElement = inputElement;
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if (jsonElement.isJsonObject()) {
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appClassName(stringBuilder);
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appendJsonObject(stringBuilder, (JsonObject) jsonElement);
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} else {
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throw new IllegalArgumentException("不可能有其它情况");
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}
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int index = stringBuilder.lastIndexOf(",");
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if (index != -1) {
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stringBuilder.deleteCharAt(index);
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}
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stringBuilder.append(")");
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for (String append : toBeAppend) {
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stringBuilder.append("\n");
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stringBuilder.append(append);
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}
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return stringBuilder.toString();
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}
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private void appClassName(StringBuilder stringBuilder) {
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stringBuilder.append("data class ").append(className).append("(\n");
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}
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private void appendJsonObject(StringBuilder stringBuilder, JsonObject jsonObject) {
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for (Map.Entry<String, JsonElement> entry : jsonObject.entrySet()) {
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String property = entry.getKey();
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JsonElement jsonElementValue = entry.getValue();
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String type = "String";
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if (jsonElementValue.isJsonArray()) {
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type = getArrayType(property, (JsonArray) jsonElementValue);
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addProperty(stringBuilder, property, type, null);
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} else if (jsonElementValue.isJsonPrimitive()) {
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type = getPrimitiveType(jsonElementValue);
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addProperty(stringBuilder, property, type, jsonElementValue.getAsString());
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} else if (jsonElementValue.isJsonObject()) {
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type = getJsonObjectType(property, (JsonObject) jsonElementValue);
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addProperty(stringBuilder, property, type, null);
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} else if (jsonElementValue.isJsonNull()) {
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addProperty(stringBuilder, property, type, null);
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}
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}
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}
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@NotNull
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private String getJsonObjectType(String property, JsonObject jsonElementValue) {
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String type;
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type = property.subSequence(0, 1).toString().toUpperCase() + property.subSequence(1, property.length());
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toBeAppend.add(new KotlinMaker(type, jsonElementValue).makeKotlinData());
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return type;
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}
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@NotNull
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private String getArrayType(String property, JsonArray jsonElementValue) {
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String type = "String";
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JsonArray jsonArray = jsonElementValue;
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JsonElement next = jsonArray.iterator().next();
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if (next.isJsonPrimitive()) {
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String subType = getPrimitiveType(next);
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type = "List" + "<" + subType + ">";
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} else if (next.isJsonObject()) {
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property = modifyPropertyForArrayObjType(property);
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String subType = getJsonObjectType(property, (JsonObject) next);
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type = "List" + "<" + subType + ">";
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/**
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* 处理子类
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*/
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toBeAppend.add(new KotlinMaker(subType, next).makeKotlinData());
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} else if (next.isJsonArray()) {
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property = modifyPropertyForArrayObjType(property);
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String subType = getArrayType(property, (JsonArray) next);
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type = "List" + "<" + subType + ">";
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} else if (next.isJsonNull()) {
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type = "List" + "<" + "String" + ">";
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}
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return type;
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}
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@NotNull
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private String modifyPropertyForArrayObjType(String property) {
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if (property.endsWith("ies")) {
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property = property.substring(0, property.length() - 3).concat("y");
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} else if (property.contains("List")) {
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int firstLatterAfterListIndex = property.lastIndexOf("List") + 4;
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if (property.length() > firstLatterAfterListIndex) {
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char c = property.charAt(firstLatterAfterListIndex);
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if (c >= 'A' && c <= 'Z') {
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String pre = property.substring(0, property.lastIndexOf("List"));
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String end = property.substring(firstLatterAfterListIndex, property.length());
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property = pre.concat(end);
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}
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} else if (property.length() == firstLatterAfterListIndex) {
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property = property.substring(0, property.lastIndexOf("List"));
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}
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} else if (property.contains("list")) {
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if (property.indexOf("list") == 0) {
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String end = property.substring(5);
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String pre = (property.charAt(4) + "").toLowerCase();
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property = pre.concat(end);
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}
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} else if (property.endsWith("s")) {
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property = property.substring(0, property.length() - 1);
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}
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return property;
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}
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private void addProperty(StringBuilder stringBuilder, String property, String type, String value) {
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stringBuilder.append("\t\tvar ").append(property).append(": ").append(type).append(",");
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if (value != null) {
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stringBuilder.append("// ").append(value).append("\n");
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} else {
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stringBuilder.append("\n");
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}
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}
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@NotNull
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private String getPrimitiveType(JsonElement next) {
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String subType = "String";
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JsonPrimitive asJsonPrimitive = next.getAsJsonPrimitive();
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if (asJsonPrimitive.isBoolean()) {
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subType = "Boolean";
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} else if (asJsonPrimitive.isNumber()) {
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if (asJsonPrimitive.getAsString().contains(".")) {
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subType = "Double";
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} else if (asJsonPrimitive.getAsLong() > Integer.MAX_VALUE) {
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subType = "Long";
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} else {
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subType = "Int";
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}
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} else if (asJsonPrimitive.isString()) {
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subType = "String";
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}
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return subType;
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}
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}

‎src/wu/seal/jsontokotlin/MakeKotlinClassAction.java‎

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package wu.seal.jsontokotlin;
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import com.google.gson.Gson;
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import com.google.gson.JsonElement;
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import com.google.gson.JsonObject;
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import com.google.gson.JsonSyntaxException;
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import com.intellij.openapi.actionSystem.AnAction;
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import com.intellij.openapi.actionSystem.AnActionEvent;
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import com.intellij.openapi.actionSystem.PlatformDataKeys;
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import com.intellij.openapi.application.ApplicationManager;
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import com.intellij.openapi.command.CommandProcessor;
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import com.intellij.openapi.editor.Caret;
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import com.intellij.openapi.editor.Document;
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import com.intellij.openapi.editor.Editor;
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import com.intellij.openapi.fileEditor.FileDocumentManager;
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import com.intellij.openapi.project.Project;
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import com.intellij.openapi.ui.InputValidator;
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import com.intellij.openapi.ui.Messages;
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import com.intellij.openapi.vfs.VirtualFile;
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import com.intellij.ui.components.JBScrollPane;
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import com.intellij.util.ui.JBDimension;
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import org.jetbrains.annotations.NotNull;
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import javax.swing.*;
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import javax.swing.text.JTextComponent;
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import java.awt.*;
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/**
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* Created by Seal.Wu on 2017/8/18.
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*/
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public class MakeKotlinClassAction extends AnAction {
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// If you register the action from Java code, this constructor is used to set the menu item name
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// (optionally, you can specify the menu description and an icon to display next to the menu item).
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// You can omit this constructor when registering the action in the plugin.xml file.
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public MakeKotlinClassAction() {
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// Set the menu item name.
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super("MakeKotlinClass");
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// Set the menu item name, description and icon.
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// super("Text _Boxes","Item description",IconLoader.getIcon("/Mypackage/icon.png"));
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}
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public void actionPerformed(AnActionEvent event) {
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Project project = event.getData(PlatformDataKeys.PROJECT);
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final Caret caret = event.getData(PlatformDataKeys.CARET);
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final Editor editor = event.getData(PlatformDataKeys.EDITOR_EVEN_IF_INACTIVE);
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if (editor == null) {
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Messages.showWarningDialog("Please open a file in editor state for insert Kotlin code!", "No Editor File");
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return;
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}
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final String className = Messages.showInputDialog(project, "Please input the Class Name for Insert", "Input ClassName", Messages.getInformationIcon());
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if (className == null || className.isEmpty()) {
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return;
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}
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final Messages.InputDialog inputDialog = new Messages.InputDialog(project, "Please input the Json Data", "Input Json"
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, Messages.getInformationIcon(), "", new InputValidator() {
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private final Gson gson = new Gson();
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@Override
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public boolean checkInput(String inputString) {
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try {
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JsonElement jsonElement = gson.fromJson(inputString, JsonObject.class);
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return true;
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} catch (JsonSyntaxException e) {
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return false;
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}
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}
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@Override
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public boolean canClose(String inputString) {
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return true;
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}
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}) {
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@NotNull
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protected JPanel createMessagePanel() {
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JPanel messagePanel = new JPanel(new BorderLayout());
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if (myMessage != null) {
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JComponent textComponent = createTextComponent();
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messagePanel.add(textComponent, BorderLayout.NORTH);
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}
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myField = createTextFieldComponent();
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messagePanel.add(createScrollableTextComponent(), BorderLayout.SOUTH);
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return messagePanel;
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}
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@Override
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protected JTextComponent createTextFieldComponent() {
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JTextArea jTextArea = new JTextArea(15, 100);
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jTextArea.setMinimumSize(new JBDimension(800, 500));
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jTextArea.setMaximumSize(new JBDimension(1000, 700));
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jTextArea.setLineWrap(true);
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jTextArea.setWrapStyleWord(true);
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jTextArea.setAutoscrolls(true);
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return jTextArea;
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}
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protected JComponent createScrollableTextComponent() {
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return new JBScrollPane(myField);
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}
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};
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inputDialog.show();
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String jsonString = inputDialog.getInputString();
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if (jsonString == null || jsonString.isEmpty()) {
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return;
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}
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final KotlinMaker maker = new KotlinMaker(className, jsonString);
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final Document document = editor.getDocument();
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final VirtualFile virtualFile = FileDocumentManager.getInstance().getFile(document);
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CommandProcessor.getInstance().executeCommand(project, new Runnable() {
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@Override
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public void run() {
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ApplicationManager.getApplication().runWriteAction(new Runnable() {
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@Override
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public void run() {
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int offset = 0;
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if (caret != null) {
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offset = caret.getOffset();
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} else {
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offset = document.getTextLength() - 1;
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}
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document.insertString(offset, maker.makeKotlinData());
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}
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});
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}
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}, "insertKotlin", null);
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Messages.showMessageDialog(project, "Kotlin Code insert successfully!", "Information", Messages.getInformationIcon());
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}
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}

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