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annotate graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/processor/Compile.java @ 21466:24d12404e70a

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author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Fri, 22 May 2015 09:39:22 +0200
parents fb17e716b03c
children b1530a6cce8c
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1 /*
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2 * Copyright (c) 2014, 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 package com.oracle.truffle.api.dsl.test.processor;
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24
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25 import java.io.ByteArrayOutputStream;
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26 import java.io.IOException;
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27 import java.io.OutputStream;
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28 import java.net.URI;
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29 import java.net.URISyntaxException;
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30 import java.util.ArrayList;
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31 import java.util.Arrays;
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32 import java.util.HashMap;
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33 import java.util.List;
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34 import java.util.Locale;
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35 import java.util.Map;
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36 import javax.tools.Diagnostic;
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37 import javax.tools.DiagnosticListener;
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38 import javax.tools.FileObject;
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39 import javax.tools.ForwardingJavaFileManager;
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40 import javax.tools.JavaFileManager;
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41 import javax.tools.JavaFileObject;
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42 import javax.tools.JavaFileObject.Kind;
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43 import javax.tools.SimpleJavaFileObject;
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44 import javax.tools.StandardJavaFileManager;
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45 import javax.tools.ToolProvider;
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46 import static org.junit.Assert.*;
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47
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48 final class Compile implements DiagnosticListener<JavaFileObject> {
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49 private final List<Diagnostic<? extends JavaFileObject>> errors = new ArrayList<>();
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50 private final Map<String, byte[]> classes;
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51 private final String sourceLevel;
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52
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53 private Compile(Class<?> processor, String code, String sl) {
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54 this.sourceLevel = sl;
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55 classes = compile(processor, code);
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56 }
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57
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58 /**
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59 * Performs compilation of given HTML page and associated Java code.
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60 */
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61 public static Compile create(Class<?> processor, String code) {
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62 return new Compile(processor, code, "1.7");
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63 }
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64
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65 /** Checks for given class among compiled resources. */
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66 public byte[] get(String res) {
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67 return classes.get(res);
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68 }
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69
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70 /**
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71 * Obtains errors created during compilation.
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72 */
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73 public List<Diagnostic<? extends JavaFileObject>> getErrors() {
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74 List<Diagnostic<? extends JavaFileObject>> err;
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75 err = new ArrayList<>();
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76 for (Diagnostic<? extends JavaFileObject> diagnostic : errors) {
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77 if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
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78 err.add(diagnostic);
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79 }
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80 }
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81 return err;
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82 }
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83
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84 private Map<String, byte[]> compile(Class<?> processor, final String code) {
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85 StandardJavaFileManager sjfm = ToolProvider.getSystemJavaCompiler().getStandardFileManager(this, null, null);
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86
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87 final Map<String, ByteArrayOutputStream> class2BAOS;
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88 class2BAOS = new HashMap<>();
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89
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90 JavaFileObject file = new SimpleJavaFileObject(URI.create("mem://mem"), Kind.SOURCE) {
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91 @Override
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92 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
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93 return code;
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94 }
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95 };
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96
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97 JavaFileManager jfm = new ForwardingJavaFileManager<JavaFileManager>(sjfm) {
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98 @Override
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99 public JavaFileObject getJavaFileForOutput(Location location, String className, Kind kind, FileObject sibling) throws IOException {
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100 if (kind == Kind.CLASS) {
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101 final ByteArrayOutputStream buffer = new ByteArrayOutputStream();
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102
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103 class2BAOS.put(className.replace('.', '/') + ".class", buffer);
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104 return new SimpleJavaFileObject(sibling.toUri(), kind) {
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105 @Override
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106 public OutputStream openOutputStream() {
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107 return buffer;
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108 }
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109 };
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110 }
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111
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112 if (kind == Kind.SOURCE) {
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113 final String n = className.replace('.', '/') + ".java";
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114 final URI un;
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115 try {
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116 un = new URI("mem://" + n);
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117 } catch (URISyntaxException ex) {
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118 throw new IOException(ex);
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119 }
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120 return new VirtFO(un/* sibling.toUri() */, kind, n);
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121 }
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122
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123 throw new IllegalStateException();
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124 }
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125
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126 @Override
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127 public boolean isSameFile(FileObject a, FileObject b) {
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128 if (a instanceof VirtFO && b instanceof VirtFO) {
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129 return ((VirtFO) a).getName().equals(((VirtFO) b).getName());
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130 }
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131
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132 return super.isSameFile(a, b);
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133 }
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134
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135 class VirtFO extends SimpleJavaFileObject {
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136
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137 private final String n;
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138
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139 public VirtFO(URI uri, Kind kind, String n) {
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140 super(uri, kind);
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141 this.n = n;
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142 }
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143
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144 private final ByteArrayOutputStream data = new ByteArrayOutputStream();
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145
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146 @Override
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147 public OutputStream openOutputStream() {
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148 return data;
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149 }
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150
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151 @Override
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152 public String getName() {
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153 return n;
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154 }
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155
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156 @Override
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157 public CharSequence getCharContent(boolean ignoreEncodingErrors) throws IOException {
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158 data.close();
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159 return new String(data.toByteArray());
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160 }
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161 }
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162 };
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163 List<String> args = Arrays.asList("-source", sourceLevel, "-target", "1.7", //
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164 "-processor", processor.getName());
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165
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166 ToolProvider.getSystemJavaCompiler().getTask(null, jfm, this, args, null, Arrays.asList(file)).call();
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167
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168 Map<String, byte[]> result = new HashMap<>();
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169
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170 for (Map.Entry<String, ByteArrayOutputStream> e : class2BAOS.entrySet()) {
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171 result.put(e.getKey(), e.getValue().toByteArray());
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172 }
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173
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174 return result;
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175 }
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176
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177 @Override
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178 public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
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179 errors.add(diagnostic);
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180 }
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181
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182 void assertErrors() {
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183 assertFalse("There are supposed to be some errors", getErrors().isEmpty());
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184 }
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185
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186 void assertNoErrors() {
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187 assertTrue("There are supposed to be no errors: " + getErrors(), getErrors().isEmpty());
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188 }
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189
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190 void assertError(String expMsg) {
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191 StringBuilder sb = new StringBuilder();
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192 sb.append("Can't find ").append(expMsg).append(" among:");
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193 for (Diagnostic<? extends JavaFileObject> e : errors) {
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194 String msg = e.getMessage(Locale.US);
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195 if (msg.contains(expMsg)) {
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196 return;
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197 }
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198 sb.append("\n");
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199 sb.append(msg);
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200 }
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201 fail(sb.toString());
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202 }
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203 }