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/*
* Copyright (C) 2009-2021 The Project Lombok Authors.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package lombok;
import static org.junit.Assert.fail;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.PrintStream;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Deque;
import java.util.IdentityHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.Stack;
import javax.annotation.processing.AbstractProcessor;
import javax.annotation.processing.ProcessingEnvironment;
import javax.annotation.processing.RoundEnvironment;
import javax.lang.model.SourceVersion;
import javax.lang.model.element.Element;
import javax.lang.model.element.TypeElement;
import com.sun.source.util.TreePath;
import com.sun.source.util.Trees;
import com.sun.tools.javac.code.Flags;
import com.sun.tools.javac.code.Symbol;
import com.sun.tools.javac.tree.JCTree;
import com.sun.tools.javac.tree.JCTree.JCAnnotation;
import com.sun.tools.javac.tree.JCTree.JCAssign;
import com.sun.tools.javac.tree.JCTree.JCClassDecl;
import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
import com.sun.tools.javac.tree.JCTree.JCIdent;
import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
import com.sun.tools.javac.tree.JCTree.JCModifiers;
import com.sun.tools.javac.tree.JCTree.JCPrimitiveTypeTree;
import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
import com.sun.tools.javac.tree.JCTree.TypeBoundKind;
import com.sun.tools.javac.tree.TreeScanner;
import lombok.delombok.Delombok;
import lombok.javac.CapturingDiagnosticListener;
import lombok.javac.CapturingDiagnosticListener.CompilerMessage;
import lombok.javac.Javac;
public class RunTestsViaDelombok extends AbstractRunTests {
private Delombok delombok = new Delombok();
@Override
public boolean transformCode(Collection messages, StringWriter result, final File file, String encoding, Map formatPreferences, int version, boolean checkPositions) throws Throwable {
delombok.setVerbose(true);
ChangedChecker cc = new ChangedChecker();
delombok.setFeedback(cc.feedback);
delombok.setForceProcess(true);
delombok.setCharset(encoding == null ? "UTF-8" : encoding);
delombok.setFormatPreferences(formatPreferences);
delombok.setDiagnosticsListener(new CapturingDiagnosticListener(file, messages));
if (checkPositions) delombok.addAdditionalAnnotationProcessor(new ValidatePositionProcessor(version));
delombok.addAdditionalAnnotationProcessor(new ValidateTypesProcessor());
delombok.addAdditionalAnnotationProcessor(new ValidateNoDuplicateTreeNodeProcessor());
delombok.addFile(file.getAbsoluteFile().getParentFile(), file.getName());
delombok.setSourcepath(file.getAbsoluteFile().getParent());
String bcp = System.getProperty("delombok.bootclasspath");
if (bcp != null) delombok.setBootclasspath(bcp);
delombok.setWriter(result);
Locale originalLocale = Locale.getDefault();
try {
Locale.setDefault(Locale.ENGLISH);
delombok.delombok();
return cc.isChanged();
} finally {
Locale.setDefault(originalLocale);
}
}
public static class ValidatePositionProcessor extends TreeProcessor {
private final int version;
public ValidatePositionProcessor(int version) {
this.version = version;
}
private String craftFailMsg(String problematicNode, Deque astContext) {
StringBuilder msg = new StringBuilder(problematicNode).append(" position of node not set: ");
for (JCTree t : astContext) {
msg.append("\n ").append(t.getClass().getSimpleName());
String asStr = t.toString();
if (asStr.length() < 80) msg.append(": ").append(asStr);
else if (t instanceof JCClassDecl) msg.append(": ").append(((JCClassDecl) t).name);
else if (t instanceof JCMethodDecl) msg.append(": ").append(((JCMethodDecl) t).name);
else if (t instanceof JCVariableDecl) msg.append(": ").append(((JCVariableDecl) t).name);
}
return msg.append("\n-------").toString();
}
@Override void processCompilationUnit(final JCCompilationUnit unit) {
final Deque astContext = new ArrayDeque();
unit.accept(new TreeScanner() {
@Override public void scan(JCTree tree) {
if (tree == null) return;
if (tree instanceof JCMethodDecl && (((JCMethodDecl) tree).mods.flags & Flags.GENERATEDCONSTR) != 0) return;
astContext.push(tree);
try {
if (tree instanceof JCModifiers) return;
if (!Javac.validateDocComment(unit, tree)) {
fail("Start position of doc comment (" + Javac.getDocComment(unit, tree) + ") of " + tree + " not set");
}
boolean check = true;
if (version < 8 && tree instanceof TypeBoundKind) {
// TypeBoundKind works differently in java6, and as a consequence,
// the position is not set properly.
// Given status of j6/j7, not worth properly testing.
check = false;
}
if (version < 8 && tree instanceof JCIdent) {
// explicit `super()` invocations do not appear to have end pos in j6/7.
if ("super".equals("" + ((JCIdent) tree).name)) check = false;
}
if (tree instanceof JCVariableDecl && (((JCVariableDecl) tree).mods.flags & Javac.GENERATED_MEMBER) != 0) return;
if (check && tree.pos == -1) fail(craftFailMsg("Start", astContext));
if (check && Javac.getEndPosition(tree, unit) == -1) {
fail(craftFailMsg("End", astContext));
}
} finally {
try {
super.scan(tree);
} finally {
astContext.pop();
}
}
}
@Override public void visitMethodDef(JCMethodDecl tree) {
super.visitMethodDef(tree);
}
@Override public void visitVarDef(JCVariableDecl tree) {
if ((tree.mods.flags & Flags.ENUM) != 0) return;
super.visitVarDef(tree);
}
@Override public void visitAnnotation(JCAnnotation tree) {
scan(tree.annotationType);
// Javac parser maps @Annotation("val") to @Annotation(value = "val") but does not add an end position for the new JCIdent...
if (tree.args.length() == 1 && tree.args.head instanceof JCAssign && ((JCIdent)((JCAssign) tree.args.head).lhs).name.toString().equals("value")) {
scan(((JCAssign) tree.args.head).rhs);
} else {
scan(tree.args);
}
}
});
}
}
public static class ValidateTypesProcessor extends TreeProcessor {
@Override void processCompilationUnit(final JCCompilationUnit unit) {
final Stack parents = new Stack();
parents.add(unit);
unit.accept(new TreeScanner() {
private JCTree parent;
@Override public void scan(JCTree tree) {
parent = parents.peek();
parents.push(tree);
super.scan(tree);
parents.pop();
}
@Override public void visitClassDef(JCClassDecl tree) {
// Skip anonymous or local classes, they have no symbol
if (!(parent instanceof JCClassDecl || parent instanceof JCCompilationUnit)) return;
validateSymbol(tree, tree.sym);
super.visitClassDef(tree);
};
@Override public void visitMethodDef(JCMethodDecl tree) {
validateSymbol(tree, tree.sym);
super.visitMethodDef(tree);
}
@Override public void visitVarDef(JCVariableDecl tree) {
// Skip local variables
if (!(parent instanceof JCClassDecl || parent instanceof JCMethodDecl)) return;
validateSymbol(tree, tree.sym);
super.visitVarDef(tree);
}
private void validateSymbol(JCTree tree, Symbol sym) {
if (sym == null) {
fail("Missing symbol for " + tree);
}
// Only classes have enclosed elements, skip everything else
if (!sym.owner.getKind().isClass()) return;
if (!sym.owner.getEnclosedElements().contains(sym)) {
fail(tree + " not added to parent");
}
}
});
}
}
public static class ValidateNoDuplicateTreeNodeProcessor extends TreeProcessor {
private String craftFailMsg(Collection astContext) {
StringBuilder msg = new StringBuilder();
for (JCTree t : astContext) {
msg.append("\n ").append(t.getClass().getSimpleName());
String asStr = t.toString();
if (asStr.length() < 80) msg.append(": ").append(asStr);
else if (t instanceof JCClassDecl) msg.append(": ").append(((JCClassDecl) t).name);
else if (t instanceof JCMethodDecl) msg.append(": ").append(((JCMethodDecl) t).name);
else if (t instanceof JCVariableDecl) msg.append(": ").append(((JCVariableDecl) t).name);
}
return msg.append("\n-------").toString();
}
@Override
void processCompilationUnit(JCCompilationUnit unit) {
final Deque parents = new ArrayDeque();
parents.add(unit);
final Map> knownTreeNode = new IdentityHashMap>();
unit.accept(new TreeScanner() {
private JCTree parent;
@Override
public void scan(JCTree tree) {
parent = parents.peek();
if (tree == null) return;
if (tree instanceof JCPrimitiveTypeTree) return;
// javac generates duplicates for record members
if (tree instanceof JCVariableDecl && (((JCVariableDecl) tree).mods.flags & Javac.GENERATED_MEMBER) != 0) return;
List knownNodeContext = knownTreeNode.put(tree, new ArrayList(parents));
if (knownNodeContext != null) {
// javac generates two JCVariableDecl elements for 'int a, b;'
if (parent instanceof JCVariableDecl) {
if (tree instanceof JCModifiers) return;
if (tree instanceof JCIdent) return;
}
fail("Node " + tree + " found twice:" + craftFailMsg(knownNodeContext) + craftFailMsg(parents));
}
parents.push(tree);
super.scan(tree);
parents.pop();
}
/**
* We always generate shallow copies for annotations
*/
@Override
public void visitAnnotation(JCAnnotation tree) {
return;
}
});
}
}
public static abstract class TreeProcessor extends AbstractProcessor {
private Trees trees;
@Override public synchronized void init(ProcessingEnvironment processingEnv) {
super.init(processingEnv);
trees = Trees.instance(processingEnv);
}
@Override public boolean process(Set annotations, RoundEnvironment roundEnv) {
for (Element element : roundEnv.getRootElements()) {
JCCompilationUnit unit = toUnit(element);
if (unit != null) {
processCompilationUnit(unit);
}
}
return false;
}
abstract void processCompilationUnit(JCCompilationUnit unit);
@Override public Set getSupportedAnnotationTypes() {
return Collections.singleton("*");
}
@Override public SourceVersion getSupportedSourceVersion() {
return SourceVersion.latest();
}
private JCCompilationUnit toUnit(Element element) {
TreePath path = null;
if (trees != null) {
try {
path = trees.getPath(element);
} catch (NullPointerException ignore) {
// Happens if a package-info.java doesn't contain a package declaration.
// https://github.com/projectlombok/lombok/issues/2184
// We can safely ignore those, since they do not need any processing
}
}
if (path == null) return null;
return (JCCompilationUnit) path.getCompilationUnit();
}
}
static class ChangedChecker {
private final ByteArrayOutputStream bytes = new ByteArrayOutputStream();
private final PrintStream feedback;
ChangedChecker() throws UnsupportedEncodingException {
feedback = new PrintStream(bytes, true, "UTF-8");
}
boolean isChanged() throws UnsupportedEncodingException {
feedback.flush();
return bytes.toString("UTF-8").endsWith("[delomboked]\n");
}
}
}