Update to support generate record from java 14

README.md

@@ -52,6 +52,30 @@ In this case we write the file to `System.out`, but we could also get it as a st
 
 The [Javadoc][javadoc] catalogs the complete JavaPoet API, which we explore below.
 
+### Record
+
+From Java 14, support new type for creating object is Record (`record`)
+
+There is how JavaPoet API support record:
+
+```java
+JavaFile javaFile = JavaFile.builder("com.squareup.tacos", TypeSpec
+  .recordBuilder("Taco")
+  .addField(FieldSpec.builder(String.class, "name").build())
+  .addField(FieldSpec.builder(Integer.class, "code").build())
+  .skipJavaLangImports(true)
+  .build());
+```
+
+Which generates:
+
+```java
+package com.squareup.tacos;
+
+record Taco(String name, Integer code) {
+}
+``` 
+
 ### Code & Control Flow
 
 Most of JavaPoet's API uses plain old immutable Java objects. There's also builders, method chaining

src/main/java/com/squareup/javapoet/TypeSpec.java

@@ -132,6 +132,15 @@ public static Builder classBuilder(ClassName className) {
     return classBuilder(checkNotNull(className, "className == null").simpleName());
   }
 
+  public static Builder recordBuilder(String name) {
+    return new Builder(Kind.RECORD, checkNotNull(name, "name == null"), null);
+  }
+
+  public static Builder recordBuilder(ClassName className) {
+    return recordBuilder(checkNotNull(className, "className == null").simpleName());
+  }
+
+
   public static Builder interfaceBuilder(String name) {
     return new Builder(Kind.INTERFACE, checkNotNull(name, "name == null"), null);
   }
@@ -228,6 +237,26 @@ void emit(CodeWriter codeWriter, String enumName, Set<Modifier> implicitModifier
         if (kind == Kind.INTERFACE) {
           extendsTypes = superinterfaces;
           implementsTypes = Collections.emptyList();
+        } else if (kind == Kind.RECORD) {
+          extendsTypes = Collections.emptyList();
+          implementsTypes = superinterfaces;
+
+          // Record constructor
+          boolean firstParameter = true;
+          codeWriter.emit("(");
+          int fieldSpecsLength = fieldSpecs.size();
+          for (int i = 0; i < fieldSpecsLength; i++) {
+            FieldSpec fieldSpec = fieldSpecs.get(i);
+
+            if (fieldSpec.hasModifier(Modifier.STATIC))
+              continue;
+            ParameterSpec parameter = ParameterSpec.builder(fieldSpec.type, fieldSpec.name).build();
+            if (!firstParameter)
+              codeWriter.emit(",").emitWrappingSpace();
+            parameter.emit(codeWriter, !(i < fieldSpecsLength));
+            firstParameter = false;
+          }
+          codeWriter.emit(")");
         } else {
           extendsTypes = superclass.equals(ClassName.OBJECT)
               ? Collections.emptyList()
@@ -295,11 +324,16 @@ void emit(CodeWriter codeWriter, String enumName, Set<Modifier> implicitModifier
       }
 
       // Non-static fields.
-      for (FieldSpec fieldSpec : fieldSpecs) {
-        if (fieldSpec.hasModifier(Modifier.STATIC)) continue;
-        if (!firstMember) codeWriter.emit("\n");
-        fieldSpec.emit(codeWriter, kind.implicitFieldModifiers);
-        firstMember = false;
+      // If kind RECORD, ignore generate Non-static field
+      if (!(Kind.RECORD == kind)) {
+        for (FieldSpec fieldSpec : fieldSpecs) {
+          if (fieldSpec.hasModifier(Modifier.STATIC))
+            continue;
+          if (!firstMember)
+            codeWriter.emit("\n");
+          fieldSpec.emit(codeWriter, kind.implicitFieldModifiers);
+          firstMember = false;
+        }
       }
 
       // Initializer block.
@@ -374,6 +408,9 @@ public enum Kind {
         Collections.emptySet(),
         Collections.emptySet()),
 
+    RECORD(Collections.emptySet(), Collections.emptySet(), Collections.emptySet(),
+        Collections.emptySet()),
+
     INTERFACE(
         Util.immutableSet(Arrays.asList(Modifier.PUBLIC, Modifier.STATIC, Modifier.FINAL)),
         Util.immutableSet(Arrays.asList(Modifier.PUBLIC, Modifier.ABSTRACT)),

src/test/java/com/squareup/javapoet/JavaFileTest.java

@@ -285,6 +285,26 @@ private TypeSpec importStaticTypeSpec(String name) {
         + "}\n");
   }
 
+  @Test
+  public void recordNoField() {
+      String source = JavaFile.builder("com.squareup.tacos", TypeSpec.recordBuilder("Taco").build())
+              .skipJavaLangImports(true).build().toString();
+      assertThat(source).isEqualTo(
+              "" + "package com.squareup.tacos;\n" + "\n" + "record Taco() {\n" + "}\n" + "");
+  }
+
+  @Test
+  public void recordTwoField() {
+      String source = JavaFile
+              .builder("com.squareup.tacos",
+                      TypeSpec.recordBuilder("Taco")
+                              .addField(FieldSpec.builder(String.class, "name").build())
+                              .addField(FieldSpec.builder(Integer.class, "code").build()).build())
+              .skipJavaLangImports(true).build().toString();
+      assertThat(source).isEqualTo("" + "package com.squareup.tacos;\n" + "\n"
+              + "record Taco(String name, Integer code) {\n" + "}\n" + "");
+  }
+
   @Test public void conflictingImports() throws Exception {
     String source = JavaFile.builder("com.squareup.tacos",
         TypeSpec.classBuilder("Taco")