1 /*
2 * Copyright (c) 2005, 2010, 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.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24 /*
25 * @test
26 * @bug 4813736
27 * @summary Additional functionality test of task and JSR 269
28 * @author Peter von der Ah\u00e9
29 * @library ./lib
30 * @run main TestJavacTaskScanner TestJavacTaskScanner.java
31 */
32
33 import com.sun.tools.javac.api.JavacTaskImpl;
34 import com.sun.tools.javac.parser.*;
35 import com.sun.tools.javac.parser.Tokens.Token;
36 import com.sun.tools.javac.util.*;
37 import java.io.*;
38 import java.net.*;
39 import java.nio.*;
40 import java.nio.charset.Charset;
41 import java.util.Arrays;
42 import javax.lang.model.element.Element;
43 import javax.lang.model.element.TypeElement;
44 import javax.lang.model.type.DeclaredType;
45 import javax.lang.model.type.TypeMirror;
46 import javax.lang.model.util.Elements;
47 import javax.lang.model.util.Types;
48 import javax.tools.*;
49
50 import static javax.tools.StandardLocation.CLASS_PATH;
51 import static javax.tools.StandardLocation.SOURCE_PATH;
52 import static javax.tools.StandardLocation.CLASS_OUTPUT;
53
54 public class TestJavacTaskScanner extends ToolTester {
55
56 final JavacTaskImpl task;
57 final Elements elements;
58 final Types types;
59
60 int numTokens;
61 int numParseTypeElements;
62 int numAllMembers;
63
64 TestJavacTaskScanner(File file) {
65 final Iterable<? extends JavaFileObject> compilationUnits =
66 fm.getJavaFileObjects(new File[] {file});
67 StandardJavaFileManager fm = getLocalFileManager(tool, null, null);
68 task = (JavacTaskImpl)tool.getTask(null, fm, null, null, null, compilationUnits);
69 task.getContext().put(ScannerFactory.scannerFactoryKey,
70 new MyScanner.Factory(task.getContext(), this));
71 elements = task.getElements();
72 types = task.getTypes();
73 }
74
75 public void run() {
76 Iterable<? extends TypeElement> toplevels;
77 try {
78 toplevels = task.enter(task.parse());
79 } catch (IOException ex) {
80 throw new AssertionError(ex);
81 }
82 for (TypeElement clazz : toplevels) {
83 System.out.format("Testing %s:%n%n", clazz.getSimpleName());
84 testParseType(clazz);
85 testGetAllMembers(clazz);
86 System.out.println();
87 System.out.println();
88 System.out.println();
89 }
90
91 System.out.println("#tokens: " + numTokens);
92 System.out.println("#parseTypeElements: " + numParseTypeElements);
93 System.out.println("#allMembers: " + numAllMembers);
94
95 check(numTokens, "#Tokens", 1222);
96 check(numParseTypeElements, "#parseTypeElements", 136);
97 check(numAllMembers, "#allMembers", 52);
98 }
99
100 void check(int value, String name, int expected) {
101 // allow some slop in the comparison to allow for minor edits in the
102 // test and in the platform
103 if (value < expected * 9 / 10)
104 throw new Error(name + " lower than expected; expected " + expected + "; found: " + value);
105 if (value > expected * 11 / 10)
106 throw new Error(name + " higher than expected; expected " + expected + "; found: " + value);
107 }
108
109 void testParseType(TypeElement clazz) {
110 DeclaredType type = (DeclaredType)task.parseType("List<String>", clazz);
111 for (Element member : elements.getAllMembers((TypeElement)type.asElement())) {
112 TypeMirror mt = types.asMemberOf(type, member);
113 System.out.format("%s : %s -> %s%n", member.getSimpleName(), member.asType(), mt);
114 numParseTypeElements++;
115 }
116 }
117
118 public static void main(String... args) throws IOException {
119 String srcdir = System.getProperty("test.src");
120 new TestJavacTaskScanner(new File(srcdir, args[0])).run();
121 }
122
123 private void testGetAllMembers(TypeElement clazz) {
124 for (Element member : elements.getAllMembers(clazz)) {
125 System.out.format("%s : %s%n", member.getSimpleName(), member.asType());
126 numAllMembers++;
127 }
128 }
129
130 /* Similar to ToolTester.getFileManager, except that this version also ensures
131 * javac classes will be available on the classpath. The javac classes are assumed
132 * to be on the classpath used to run this test (this is true when using jtreg).
133 * The classes are found by obtaining the URL for a sample javac class, using
134 * getClassLoader().getResource(), and then deconstructing the URL to find the
135 * underlying directory or jar file to place on the classpath.
136 */
137 public StandardJavaFileManager getLocalFileManager(JavaCompiler tool,
138 DiagnosticListener<JavaFileObject> dl,
139 Charset encoding) {
140 File javac_classes;
141 try {
142 final String javacMainClass = "com/sun/tools/javac/Main.class";
143 URL url = getClass().getClassLoader().getResource(javacMainClass);
144 if (url == null)
145 throw new Error("can't locate javac classes");
146 URI uri = url.toURI();
147 String scheme = uri.getScheme();
148 String ssp = uri.getSchemeSpecificPart();
149 if (scheme.equals("jar")) {
150 javac_classes = new File(new URI(ssp.substring(0, ssp.indexOf("!/"))));
151 } else if (scheme.equals("file")) {
152 javac_classes = new File(ssp.substring(0, ssp.indexOf(javacMainClass)));
153 } else
154 throw new Error("unknown URL: " + url);
155 } catch (URISyntaxException e) {
156 throw new Error(e);
157 }
158 System.err.println("javac_classes: " + javac_classes);
159
160 StandardJavaFileManager fm = tool.getStandardFileManager(dl, null, encoding);
161 try {
162 fm.setLocation(SOURCE_PATH, Arrays.asList(test_src));
163 fm.setLocation(CLASS_PATH, Arrays.asList(test_classes, javac_classes));
164 fm.setLocation(CLASS_OUTPUT, Arrays.asList(test_classes));
165 } catch (IOException e) {
166 throw new AssertionError(e);
167 }
168 return fm;
169 }
170 }
171
172 class MyScanner extends Scanner {
173
174 public static class Factory extends ScannerFactory {
175 public Factory(Context context, TestJavacTaskScanner test) {
176 super(context);
177 this.test = test;
178 }
179
180 @Override
181 public Scanner newScanner(CharSequence input, boolean keepDocComments) {
182 assert !keepDocComments;
183 if (input instanceof CharBuffer) {
184 return new MyScanner(this, (CharBuffer)input, test);
185 } else {
186 char[] array = input.toString().toCharArray();
187 return newScanner(array, array.length, keepDocComments);
188 }
189 }
190
191 @Override
192 public Scanner newScanner(char[] input, int inputLength, boolean keepDocComments) {
193 assert !keepDocComments;
194 return new MyScanner(this, input, inputLength, test);
195 }
196
197 private TestJavacTaskScanner test;
198 }
199 protected MyScanner(ScannerFactory fac, CharBuffer buffer, TestJavacTaskScanner test) {
200 super(fac, buffer);
201 this.test = test;
202 }
203 protected MyScanner(ScannerFactory fac, char[] input, int inputLength, TestJavacTaskScanner test) {
204 super(fac, input, inputLength);
205 this.test = test;
206 }
207
208 public void nextToken() {
209 super.nextToken();
210 Token tk = token();
211 System.err.format("Saw token %s %n", tk.kind);
212 test.numTokens++;
213 }
214
215 private TestJavacTaskScanner test;
216
217 }