1 /* 2 * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package jdk.jshell; 27 28 import java.util.Collection; 29 import java.util.Set; 30 import java.util.stream.Collectors; 31 import jdk.jshell.Key.VarKey; 32 33 /** 34 * Snippet for a variable definition. 35 * The Kind is {@link jdk.jshell.Snippet.Kind#VAR}. 36 * <p> 37 * <code>VarSnippet</code> is immutable: an access to 38 * any of its methods will always return the same result. 39 * and thus is thread-safe. 40 * 41 * @since 9 42 * @jls 8.3 Field Declarations 43 */ 44 public class VarSnippet extends DeclarationSnippet { 45 46 /**A human readable type of the variable. May include intersection types 47 * and human readable description of anonymous classes. 48 */ 49 final String typeName; 50 51 /**The full type inferred for "var" variables. May include intersection types 52 * and inaccessible types. {@literal null} if enhancing the type is not necessary. 53 */ 54 final String fullTypeName; 55 56 /**The anonymous class declared in the initializer of the "var" variable. 57 * These are automatically statically imported when the field is imported. 58 */ 59 final Set<String> anonymousClasses; 60 61 VarSnippet(VarKey key, String userSource, Wrap guts, 62 String name, SubKind subkind, String typeName, String fullTypeName, 63 Set<String> anonymousClasses, Collection<String> declareReferences, 64 DiagList syntheticDiags) { 65 super(key, userSource, guts, name, subkind, null, declareReferences, 66 null, syntheticDiags); 67 this.typeName = typeName; 68 this.fullTypeName = fullTypeName; 69 this.anonymousClasses = anonymousClasses; 70 } 71 72 /** 73 * A String representation of the type of the variable. 74 * @return the variable type as a String. 75 */ 76 public String typeName() { 77 return typeName; 78 } 79 80 @Override 81 String importLine(JShell state) { 82 return "import static " + classFullName() + "." + name() + "; " + 83 anonymousClasses.stream() 84 .map(c -> "import static " + classFullName() + "." + c + "; ") 85 .collect(Collectors.joining()); 86 } 87 88 }