Initial code to generate the Java types from the spec.

pkg/analysis_server/tool/spec/codegen_java.dart

Index: pkg/analysis_server/tool/spec/codegen_java.dart
diff --git a/pkg/analysis_server/tool/spec/codegen_java.dart b/pkg/analysis_server/tool/spec/codegen_java.dart
index e534c40e47e822777882c5951b8e3dbf3b84b107..3139bf114b8217cedb504cc864a2259021799462 100644
--- a/pkg/analysis_server/tool/spec/codegen_java.dart
+++ b/pkg/analysis_server/tool/spec/codegen_java.dart
@@ -7,6 +7,7 @@
  */
 library CodegenJava;
 
+import 'package:html5lib/dom.dart' as dom;
 import 'api.dart';
 import 'codegen_tools.dart';
 import 'from_html.dart';
@@ -34,6 +35,7 @@ class CodegenJavaVisitor extends HierarchicalApiVisitor with CodeGenerator {
     'FilePath': 'String',
     'DebugContextId': 'String',
     'object': 'Object',
+    'Override': 'OverrideMember',
   };
 
   /**
@@ -46,6 +48,27 @@ class CodegenJavaVisitor extends HierarchicalApiVisitor with CodeGenerator {
         toHtmlVisitor = new ToHtmlVisitor(api);
 
   /**
+   * Convenience method for subclasses for calling docComment.
+   */
+  void javadocComment(List<dom.Node> docs) {
+    docComment(docs, width: 99, javadocStyle: true);
+  }
+
+  /**
+   * Create a private field, using [callback] to create its contents.
+   */
+  void privateField(String fieldName, void callback()) {
+    _state.privateFields[fieldName] = collectCode(callback);
+  }
+
+  /**
+   * Create a constructor, using [callback] to create its contents.
+   */
+  void constructor(String name, void callback()) {
+    _state.constructors[name] = collectCode(callback);
+  }
+
+  /**
    * Create a private method, using [callback] to create its contents.
    */
   void privateMethod(String methodName, void callback()) {
@@ -72,6 +95,21 @@ class CodegenJavaVisitor extends HierarchicalApiVisitor with CodeGenerator {
       callback();
       writeln('$header {');
       indent(() {
+        // fields
+        List<String> allFields = _valuesSortedByKey(_state.privateFields).toList();
+        for (String field in allFields) {
+          writeln();
+          write(field);
+        }
+
+        // constructors
+        List<String> allConstructors = _valuesSortedByKey(_state.constructors).toList();
+        for (String constructor in allConstructors) {
+          writeln();
+          write(constructor);
+        }
+
+        // methods
         List<String> allMethods = _valuesSortedByKey(_state.publicMethods).toList();
         allMethods.addAll(_valuesSortedByKey(_state.privateMethods));
         for (String method in allMethods) {
@@ -98,7 +136,11 @@ class CodegenJavaVisitor extends HierarchicalApiVisitor with CodeGenerator {
         return typeName;
       }
     } else if (type is TypeList) {
-      return 'List<${javaType(type.itemType)}>';
+      if (isPrimitive(type.itemType)) {
+        return '${javaType(type.itemType)}[]';
+      } else {
+        return 'List<${javaType(type.itemType)}>';
+      }
     } else if (type is TypeMap) {
       return 'Map<${javaType(type.keyType)}, ${javaType(type.valueType)}>';
     } else if (type is TypeUnion) {
@@ -109,6 +151,38 @@ class CodegenJavaVisitor extends HierarchicalApiVisitor with CodeGenerator {
   }
 
   /**
+   * Return true iff the passed [TypeDecl] will represent a primitive Java type.
+   */
+  bool isPrimitive(TypeDecl type) {
+    if (type is TypeReference) {
+      String typeStr = javaType(type);
+      return typeStr == 'int' || typeStr == 'boolean';
+    }
+    return false;
+  }
+
+  /**
+   * Return true iff the passed [TypeDecl] will represent an array in Java.
+   */
+  bool isList(TypeDecl type) {
+    return type is TypeList && !isPrimitive(type.itemType);
+  }
+
+  /**
+   * Return true iff the passed [TypeDecl] will represent an array in Java.
+   */
+  bool isArray(TypeDecl type) {
+    return type is TypeList && isPrimitive(type.itemType);
+  }
+
+  /**
+   * Return true iff the passed [TypeDecl] will represent a Map in type.
+   */
+  bool isMap(TypeDecl type) {
+    return type is TypeMap;
+  }
+
+  /**
    * Return a suitable representation of [name] as the name of a Java variable.
    */
   String javaName(String name) {
@@ -150,6 +224,16 @@ class _CodegenJavaState {
    * Temporary storage for private methods.
    */
   Map<String, String> privateMethods = <String, String>{};
+
+  /**
+   * Temporary storage for private fields.
+   */
+  Map<String, String> privateFields = <String, String>{};
+
+  /**
+   * Temporary storage for constructors.
+   */
+  Map<String, String> constructors = <String, String>{};
 }
 
 /**