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1 /* |
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2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 |
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24 /** |
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25 * @test |
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26 * @bug 7021650 |
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27 * @summary Fix Context issues |
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28 * @library /tools/javac/lib |
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29 * @build JavacTestingAbstractProcessor T7021650 |
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30 * @run main T7021650 |
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31 */ |
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32 |
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33 import java.io.*; |
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34 import java.net.*; |
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35 import java.util.*; |
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36 import javax.annotation.processing.*; |
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37 import javax.lang.model.element.*; |
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38 import javax.tools.*; |
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39 |
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40 import com.sun.tools.javac.comp.Attr; |
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41 import com.sun.tools.javac.file.JavacFileManager; |
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42 import com.sun.tools.javac.main.Main; |
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43 import com.sun.tools.javac.processing.JavacProcessingEnvironment; |
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44 import com.sun.tools.javac.util.Context; |
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45 |
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46 public class T7021650 extends JavacTestingAbstractProcessor { |
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47 public static void main(String... args) throws Exception { |
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48 new T7021650().run(); |
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49 } |
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50 |
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51 static File testSrc = new File(System.getProperty("test.src")); |
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52 static final int MAX_ROUNDS = 3; |
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53 |
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54 /** |
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55 * Perform a compilation with custom factories registered in the context, |
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56 * and verify that corresponding objects are created in each round. |
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57 */ |
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58 void run() throws Exception { |
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59 Counter demoCounter = new Counter(); |
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60 Counter myAttrCounter = new Counter(); |
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61 |
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62 Context context = new Context(); |
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63 // Use a custom file manager which creates classloaders for annotation |
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64 // processors with a sensible delegation parent, so that all instances |
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65 // of test classes come from the same class loader. This is important |
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66 // because the test performs class checks on the instances of classes |
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67 // found in the context for each round or processing. |
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68 context.put(JavaFileManager.class, new Context.Factory<JavaFileManager>() { |
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69 public JavaFileManager make(Context c) { |
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70 return new JavacFileManager(c, true, null) { |
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71 @Override |
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72 protected ClassLoader getClassLoader(URL[] urls) { |
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73 return new URLClassLoader(urls, T7021650.class.getClassLoader()); |
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74 } |
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75 }; |
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76 } |
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77 }); |
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78 |
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79 Demo.preRegister(context, demoCounter); |
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80 MyAttr.preRegister(context, myAttrCounter); |
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81 |
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82 String[] args = { |
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83 "-d", ".", |
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84 "-processor", T7021650.class.getName(), |
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85 "-XprintRounds", |
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86 new File(testSrc, T7021650.class.getName() + ".java").getPath() |
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87 }; |
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88 |
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89 compile(context, args); |
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90 |
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91 // Expect to create Demo for initial round, then MAX_ROUNDS in which |
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92 // GenX files are generated, then standard final round of processing. |
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93 checkEqual("demoCounter", demoCounter.count, MAX_ROUNDS + 2); |
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94 |
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95 // Expect to create MyAttr for same processing rounds as for Demo, |
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96 // plus additional context for final compilation. |
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97 checkEqual("myAttrCounter", myAttrCounter.count, MAX_ROUNDS + 3); |
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98 } |
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99 |
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100 void compile(Context context, String... args) throws Exception { |
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101 StringWriter sw = new StringWriter(); |
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102 PrintWriter pw = new PrintWriter(sw); |
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103 Main m = new Main("javac", pw); |
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104 Main.Result res = m.compile(args, context); |
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105 pw.close(); |
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106 String out = sw.toString(); |
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107 if (!out.isEmpty()) |
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108 System.err.println(out); |
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109 if (!res.isOK()) |
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110 throw new Exception("compilation failed unexpectedly: result=" + res); |
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111 } |
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112 |
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113 void checkEqual(String label, int found, int expect) throws Exception { |
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114 if (found != expect) |
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115 throw new Exception("unexpected value for " + label |
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116 + ": expected " + expect |
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117 + ": found " + found); |
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118 } |
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119 |
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120 //--------------- |
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121 |
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122 /* |
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123 * A custom class unknown to javac but nonetheless registered in the context. |
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124 */ |
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125 static class Demo { |
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126 static void preRegister(Context context, final Counter counter) { |
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127 context.put(Demo.class, new Context.Factory<Demo>() { |
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128 public Demo make(Context c) { |
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129 counter.count++; |
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130 return new Demo(c); |
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131 } |
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132 }); |
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133 } |
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134 |
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135 Demo(Context c) { |
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136 c.put(Demo.class, this); |
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137 } |
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138 |
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139 static Demo instance(Context context) { |
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140 return context.get(Demo.class); |
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141 } |
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142 } |
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143 |
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144 /** |
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145 * A custom version of a standard javac component. |
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146 */ |
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147 static class MyAttr extends Attr { |
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148 static void preRegister(Context context, final Counter counter) { |
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149 context.put(attrKey, new Context.Factory<Attr>() { |
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150 public Attr make(Context c) { |
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151 counter.count++; |
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152 return new MyAttr(c); |
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153 } |
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154 }); |
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155 } |
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156 |
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157 MyAttr(Context c) { |
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158 super(c); |
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159 } |
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160 } |
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161 |
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162 static class Counter { |
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163 int count; |
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164 } |
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165 |
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166 //--------------- |
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167 |
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168 int round = 0; |
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169 |
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170 @Override |
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171 public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) { |
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172 round++; |
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173 |
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174 Context context = ((JavacProcessingEnvironment) processingEnv).getContext(); |
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175 |
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176 // verify items in context as expected |
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177 check("Demo", Demo.instance(context), Demo.class); |
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178 check("Attr", Attr.instance(context), MyAttr.class); |
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179 |
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180 // For a few rounds, generate new source files, so that we can check whether |
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181 // values in the context are correctly handled in subsequent processing rounds |
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182 if (round <= MAX_ROUNDS) { |
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183 String pkg = "p"; |
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184 String currClass = "Gen" + round; |
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185 String curr = pkg + "." + currClass; |
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186 String next = (pkg + ".Gen" + (round + 1)); |
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187 StringBuilder text = new StringBuilder(); |
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188 text.append("package ").append(pkg).append(";\n"); |
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189 text.append("public class ").append(currClass).append(" {\n"); |
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190 if (round < MAX_ROUNDS) |
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191 text.append(" ").append(next).append(" x;\n"); |
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192 text.append("}\n"); |
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193 |
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194 try { |
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195 JavaFileObject fo = filer.createSourceFile(curr); |
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196 Writer out = fo.openWriter(); |
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197 try { |
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198 out.write(text.toString()); |
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199 } finally { |
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200 out.close(); |
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201 } |
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202 } catch (IOException e) { |
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203 throw new Error(e); |
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204 } |
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205 } |
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206 |
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207 return true; |
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208 } |
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209 |
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210 void check(String label, Object o, Class<?> clazz) { |
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211 if (o == null) |
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212 throw new IllegalStateException(label + ": no item found"); |
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213 if (!clazz.isAssignableFrom(o.getClass())) |
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214 throw new IllegalStateException(label + ": unexpected class: " + o.getClass()); |
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215 } |
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216 } |