diff options
| author | Reinier Zwitserloot <reinier@tipit.to> | 2009-11-25 07:32:49 +0100 |
|---|---|---|
| committer | Reinier Zwitserloot <reinier@tipit.to> | 2009-11-25 07:32:49 +0100 |
| commit | 1a0e611a9c5e1ee518670647ce1a44beae559b44 (patch) | |
| tree | e5ef8f671bc6688f486e874d4e2e1a7813e4f0b2 /src/core/lombok/javac | |
| parent | 7fd947ea40c25dad9ee543ebc4b92de9a2e05efc (diff) | |
| download | lombok-1a0e611a9c5e1ee518670647ce1a44beae559b44.tar.gz lombok-1a0e611a9c5e1ee518670647ce1a44beae559b44.tar.bz2 lombok-1a0e611a9c5e1ee518670647ce1a44beae559b44.zip | |
Refactored the source folders.
Diffstat (limited to 'src/core/lombok/javac')
21 files changed, 3532 insertions, 0 deletions
diff --git a/src/core/lombok/javac/HandlerLibrary.java b/src/core/lombok/javac/HandlerLibrary.java new file mode 100644 index 00000000..bbe9dec0 --- /dev/null +++ b/src/core/lombok/javac/HandlerLibrary.java @@ -0,0 +1,219 @@ +/* + * Copyright © 2009 Reinier Zwitserloot and Roel Spilker. + * + * 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.javac; + +import java.lang.annotation.Annotation; +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Map; +import java.util.ServiceConfigurationError; +import java.util.ServiceLoader; + +import javax.annotation.processing.Messager; +import javax.tools.Diagnostic; + +import lombok.core.PrintAST; +import lombok.core.SpiLoadUtil; +import lombok.core.TypeLibrary; +import lombok.core.TypeResolver; +import lombok.core.AnnotationValues.AnnotationValueDecodeFail; + +import com.sun.tools.javac.tree.JCTree.JCAnnotation; +import com.sun.tools.javac.tree.JCTree.JCCompilationUnit; + +/** + * This class tracks 'handlers' and knows how to invoke them for any given AST node. + * + * This class can find the handlers (via SPI discovery) and will set up the given AST node, such as + * building an AnnotationValues instance. + */ +public class HandlerLibrary { + private final TypeLibrary typeLibrary = new TypeLibrary(); + private final Map<String, AnnotationHandlerContainer<?>> annotationHandlers = new HashMap<String, AnnotationHandlerContainer<?>>(); + private final Collection<JavacASTVisitor> visitorHandlers = new ArrayList<JavacASTVisitor>(); + private final Messager messager; + private boolean skipPrintAST = true; + + /** + * Creates a new HandlerLibrary that will report any problems or errors to the provided messager. + * You probably want to use {@link #load(Messager)} instead. + */ + public HandlerLibrary(Messager messager) { + this.messager = messager; + } + + private static class AnnotationHandlerContainer<T extends Annotation> { + private JavacAnnotationHandler<T> handler; + private Class<T> annotationClass; + + AnnotationHandlerContainer(JavacAnnotationHandler<T> handler, Class<T> annotationClass) { + this.handler = handler; + this.annotationClass = annotationClass; + } + + public boolean handle(final JavacNode node) { + return handler.handle(Javac.createAnnotation(annotationClass, node), (JCAnnotation)node.get(), node); + } + } + + /** + * Creates a new HandlerLibrary that will report any problems or errors to the provided messager, + * then uses SPI discovery to load all annotation and visitor based handlers so that future calls + * to the handle methods will defer to these handlers. + */ + public static HandlerLibrary load(Messager messager) { + HandlerLibrary library = new HandlerLibrary(messager); + + loadAnnotationHandlers(library); + loadVisitorHandlers(library); + + return library; + } + + /** Uses SPI Discovery to find implementations of {@link JavacAnnotationHandler}. */ + @SuppressWarnings("unchecked") + private static void loadAnnotationHandlers(HandlerLibrary lib) { + //No, that seemingly superfluous reference to JavacAnnotationHandler's classloader is not in fact superfluous! + Iterator<JavacAnnotationHandler> it = ServiceLoader.load(JavacAnnotationHandler.class, + JavacAnnotationHandler.class.getClassLoader()).iterator(); + while (it.hasNext()) { + try { + JavacAnnotationHandler<?> handler = it.next(); + Class<? extends Annotation> annotationClass = + SpiLoadUtil.findAnnotationClass(handler.getClass(), JavacAnnotationHandler.class); + AnnotationHandlerContainer<?> container = new AnnotationHandlerContainer(handler, annotationClass); + if (lib.annotationHandlers.put(container.annotationClass.getName(), container) != null) { + lib.javacWarning("Duplicate handlers for annotation type: " + container.annotationClass.getName()); + } + lib.typeLibrary.addType(container.annotationClass.getName()); + } catch (ServiceConfigurationError e) { + lib.javacWarning("Can't load Lombok annotation handler for javac", e); + } + } + } + + /** Uses SPI Discovery to find implementations of {@link JavacASTVisitor}. */ + private static void loadVisitorHandlers(HandlerLibrary lib) { + //No, that seemingly superfluous reference to JavacASTVisitor's classloader is not in fact superfluous! + Iterator<JavacASTVisitor> it = ServiceLoader.load(JavacASTVisitor.class, + JavacASTVisitor.class.getClassLoader()).iterator(); + while (it.hasNext()) { + try { + JavacASTVisitor handler = it.next(); + lib.visitorHandlers.add(handler); + } catch (ServiceConfigurationError e) { + lib.javacWarning("Can't load Lombok visitor handler for javac", e); + } + } + } + + /** Generates a warning in the Messager that was used to initialize this HandlerLibrary. */ + public void javacWarning(String message) { + javacWarning(message, null); + } + + /** Generates a warning in the Messager that was used to initialize this HandlerLibrary. */ + public void javacWarning(String message, Throwable t) { + messager.printMessage(Diagnostic.Kind.WARNING, message + (t == null ? "" : (": " + t))); + } + + /** Generates an error in the Messager that was used to initialize this HandlerLibrary. */ + public void javacError(String message) { + javacError(message, null); + } + + /** Generates an error in the Messager that was used to initialize this HandlerLibrary. */ + public void javacError(String message, Throwable t) { + messager.printMessage(Diagnostic.Kind.ERROR, message + (t == null ? "" : (": " + t))); + if (t != null) t.printStackTrace(); + } + + /** + * Handles the provided annotation node by first finding a qualifying instance of + * {@link JavacAnnotationHandler} and if one exists, calling it with a freshly cooked up + * instance of {@link lombok.core.AnnotationValues}. + * + * Note that depending on the printASTOnly flag, the {@link lombok.core.PrintAST} annotation + * will either be silently skipped, or everything that isn't {@code PrintAST} will be skipped. + * + * The HandlerLibrary will attempt to guess if the given annotation node represents a lombok annotation. + * For example, if {@code lombok.*} is in the import list, then this method will guess that + * {@code Getter} refers to {@code lombok.Getter}, presuming that {@link lombok.javac.handlers.HandleGetter} + * has been loaded. + * + * @param unit The Compilation Unit that contains the Annotation AST Node. + * @param node The Lombok AST Node representing the Annotation AST Node. + * @param annotation 'node.get()' - convenience parameter. + */ + public boolean handleAnnotation(JCCompilationUnit unit, JavacNode node, JCAnnotation annotation) { + TypeResolver resolver = new TypeResolver(typeLibrary, node.getPackageDeclaration(), node.getImportStatements()); + String rawType = annotation.annotationType.toString(); + boolean handled = false; + for (String fqn : resolver.findTypeMatches(node, rawType)) { + boolean isPrintAST = fqn.equals(PrintAST.class.getName()); + if (isPrintAST == skipPrintAST) continue; + AnnotationHandlerContainer<?> container = annotationHandlers.get(fqn); + if (container == null) continue; + + try { + handled |= container.handle(node); + } catch (AnnotationValueDecodeFail fail) { + fail.owner.setError(fail.getMessage(), fail.idx); + } catch (Throwable t) { + String sourceName = "(unknown).java"; + if (unit != null && unit.sourcefile != null) sourceName = unit.sourcefile.getName(); + javacError(String.format("Lombok annotation handler %s failed on " + sourceName, container.handler.getClass()), t); + } + } + + return handled; + } + + /** + * Will call all registered {@link JavacASTVisitor} instances. + */ + public void callASTVisitors(JavacAST ast) { + for (JavacASTVisitor visitor : visitorHandlers) try { + ast.traverse(visitor); + } catch (Throwable t) { + javacError(String.format("Lombok visitor handler %s failed", visitor.getClass()), t); + } + } + + /** + * Lombok does not currently support triggering annotations in a specified order; the order is essentially + * random right now. This lack of order is particularly annoying for the {@code PrintAST} annotation, + * which is almost always intended to run last. Hence, this hack, which lets it in fact run last. + * + * @see #skipAllButPrintAST() + */ + public void skipPrintAST() { + skipPrintAST = true; + } + + /** @see #skipPrintAST() */ + public void skipAllButPrintAST() { + skipPrintAST = false; + } +} diff --git a/src/core/lombok/javac/Javac.java b/src/core/lombok/javac/Javac.java new file mode 100644 index 00000000..58a24207 --- /dev/null +++ b/src/core/lombok/javac/Javac.java @@ -0,0 +1,162 @@ +/* + * Copyright © 2009 Reinier Zwitserloot and Roel Spilker. + * + * 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.javac; + +import java.lang.annotation.Annotation; +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import lombok.core.AnnotationValues; +import lombok.core.TypeLibrary; +import lombok.core.TypeResolver; +import lombok.core.AST.Kind; +import lombok.core.AnnotationValues.AnnotationValue; + +import com.sun.tools.javac.tree.JCTree.JCAnnotation; +import com.sun.tools.javac.tree.JCTree.JCAssign; +import com.sun.tools.javac.tree.JCTree.JCExpression; +import com.sun.tools.javac.tree.JCTree.JCFieldAccess; +import com.sun.tools.javac.tree.JCTree.JCIdent; +import com.sun.tools.javac.tree.JCTree.JCLiteral; +import com.sun.tools.javac.tree.JCTree.JCNewArray; +import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; + +/** + * Container for static utility methods relevant to lombok's operation on javac. + */ +public class Javac { + private Javac() { + //prevent instantiation + } + + /** + * Checks if the Annotation AST Node provided is likely to be an instance of the provided annotation type. + * + * @param type An actual annotation type, such as {@code lombok.Getter.class}. + * @param node A Lombok AST node representing an annotation in source code. + */ + public static boolean annotationTypeMatches(Class<? extends Annotation> type, JavacNode node) { + if (node.getKind() != Kind.ANNOTATION) return false; + String typeName = ((JCAnnotation)node.get()).annotationType.toString(); + + TypeLibrary library = new TypeLibrary(); + library.addType(type.getName()); + TypeResolver resolver = new TypeResolver(library, node.getPackageDeclaration(), node.getImportStatements()); + Collection<String> typeMatches = resolver.findTypeMatches(node, typeName); + + for (String match : typeMatches) { + if (match.equals(type.getName())) return true; + } + + return false; + } + + /** + * Creates an instance of {@code AnnotationValues} for the provided AST Node. + * + * @param type An annotation class type, such as {@code lombok.Getter.class}. + * @param node A Lombok AST node representing an annotation in source code. + */ + public static <A extends Annotation> AnnotationValues<A> createAnnotation(Class<A> type, final JavacNode node) { + Map<String, AnnotationValue> values = new HashMap<String, AnnotationValue>(); + JCAnnotation anno = (JCAnnotation) node.get(); + List<JCExpression> arguments = anno.getArguments(); + for (Method m : type.getDeclaredMethods()) { + if (!Modifier.isPublic(m.getModifiers())) continue; + String name = m.getName(); + List<String> raws = new ArrayList<String>(); + List<Object> guesses = new ArrayList<Object>(); + final List<DiagnosticPosition> positions = new ArrayList<DiagnosticPosition>(); + boolean isExplicit = false; + + for (JCExpression arg : arguments) { + String mName; + JCExpression rhs; + + if (arg instanceof JCAssign) { + JCAssign assign = (JCAssign) arg; + mName = assign.lhs.toString(); + rhs = assign.rhs; + } else { + rhs = arg; + mName = "value"; + } + + if (!mName.equals(name)) continue; + isExplicit = true; + if (rhs instanceof JCNewArray) { + List<JCExpression> elems = ((JCNewArray)rhs).elems; + for (JCExpression inner : elems) { + raws.add(inner.toString()); + guesses.add(calculateGuess(inner)); + positions.add(inner.pos()); + } + } else { + raws.add(rhs.toString()); + guesses.add(calculateGuess(rhs)); + positions.add(rhs.pos()); + } + } + + values.put(name, new AnnotationValue(node, raws, guesses, isExplicit) { + @Override public void setError(String message, int valueIdx) { + if (valueIdx < 0) node.addError(message); + else node.addError(message, positions.get(valueIdx)); + } + @Override public void setWarning(String message, int valueIdx) { + if (valueIdx < 0) node.addWarning(message); + else node.addWarning(message, positions.get(valueIdx)); + } + }); + } + + return new AnnotationValues<A>(type, values, node); + } + + /** + * Turns an expression into a guessed intended literal. Only works for literals, as you can imagine. + * + * Will for example turn a TrueLiteral into 'Boolean.valueOf(true)'. + */ + private static Object calculateGuess(JCExpression expr) { + if (expr instanceof JCLiteral) { + JCLiteral lit = (JCLiteral)expr; + if (lit.getKind() == com.sun.source.tree.Tree.Kind.BOOLEAN_LITERAL) { + return ((Number)lit.value).intValue() == 0 ? false : true; + } + return lit.value; + } else if (expr instanceof JCIdent || expr instanceof JCFieldAccess) { + String x = expr.toString(); + if (x.endsWith(".class")) x = x.substring(0, x.length() - 6); + else { + int idx = x.lastIndexOf('.'); + if (idx > -1) x = x.substring(idx + 1); + } + return x; + } else return null; + } +} diff --git a/src/core/lombok/javac/JavacAST.java b/src/core/lombok/javac/JavacAST.java new file mode 100644 index 00000000..f2c83fb8 --- /dev/null +++ b/src/core/lombok/javac/JavacAST.java @@ -0,0 +1,347 @@ +/* + * Copyright © 2009 Reinier Zwitserloot and Roel Spilker. + * + * 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.javac; + +import java.lang.reflect.Field; +import java.util.ArrayList; +import java.util.Collection; +import java.util.List; + +import javax.annotation.processing.Messager; +import javax.tools.Diagnostic; +import javax.tools.JavaFileObject; + +import lombok.core.AST; + +import com.sun.source.util.Trees; +import com.sun.tools.javac.code.Symtab; +import com.sun.tools.javac.tree.JCTree; +import com.sun.tools.javac.tree.TreeMaker; +import com.sun.tools.javac.tree.JCTree.JCAnnotation; +import com.sun.tools.javac.tree.JCTree.JCBlock; +import com.sun.tools.javac.tree.JCTree.JCClassDecl; +import com.sun.tools.javac.tree.JCTree.JCCompilationUnit; +import com.sun.tools.javac.tree.JCTree.JCExpression; +import com.sun.tools.javac.tree.JCTree.JCFieldAccess; +import com.sun.tools.javac.tree.JCTree.JCImport; +import com.sun.tools.javac.tree.JCTree.JCMethodDecl; +import com.sun.tools.javac.tree.JCTree.JCStatement; +import com.sun.tools.javac.tree.JCTree.JCVariableDecl; +import com.sun.tools.javac.util.Context; +import com.sun.tools.javac.util.Log; +import com.sun.tools.javac.util.Name; +import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; + +/** + * Wraps around javac's internal AST view to add useful features as well as the ability to visit parents from children, + * something javac's own AST system does not offer. + */ +public class JavacAST extends AST<JavacAST, JavacNode, JCTree> { + private final Messager messager; + private final Name.Table nameTable; + private final TreeMaker treeMaker; + private final Symtab symtab; + private final Log log; + private final Context context; + + /** + * Creates a new JavacAST of the provided Compilation Unit. + * + * @param trees The trees instance to use to inspect the compilation unit. Generate via: + * {@code Trees.getInstance(env)} + * @param messager A Messager for warning and error reporting. + * @param context A Context object for interfacing with the compiler. + * @param top The compilation unit, which serves as the top level node in the tree to be built. + */ + public JavacAST(Trees trees, Messager messager, Context context, JCCompilationUnit top) { + super(top.sourcefile == null ? null : top.sourcefile.toString()); + setTop(buildCompilationUnit(top)); + this.context = context; + this.messager = messager; + this.log = Log.instance(context); + this.nameTable = Name.Table.instance(context); + this.treeMaker = TreeMaker.instance(context); + this.symtab = Symtab.instance(context); + } + + public Context getContext() { + return context; + } + + /** {@inheritDoc} */ + @Override public String getPackageDeclaration() { + JCCompilationUnit unit = (JCCompilationUnit)top().get(); + return unit.pid instanceof JCFieldAccess ? unit.pid.toString() : null; + } + + /** {@inheritDoc} */ + @Override public Collection<String> getImportStatements() { + List<String> imports = new ArrayList<String>(); + JCCompilationUnit unit = (JCCompilationUnit)top().get(); + for (JCTree def : unit.defs) { + if (def instanceof JCImport) { + imports.add(((JCImport)def).qualid.toString()); + } + } + + return imports; + } + + /** + * Runs through the entire AST, starting at the compilation unit, calling the provided visitor's visit methods + * for each node, depth first. + */ + public void traverse(JavacASTVisitor visitor) { + top().traverse(visitor); + } + + void traverseChildren(JavacASTVisitor visitor, JavacNode node) { + for (JavacNode child : new ArrayList<JavacNode>(node.down())) { + child.traverse(visitor); + } + } + + /** @return A Name object generated for the proper name table belonging to this AST. */ + public Name toName(String name) { + return nameTable.fromString(name); + } + + /** @return A TreeMaker instance that you can use to create new AST nodes. */ + public TreeMaker getTreeMaker() { + return treeMaker; + } + + /** @return The symbol table used by this AST for symbols. */ + public Symtab getSymbolTable() { + return symtab; + } + + /** {@inheritDoc} */ + @Override protected JavacNode buildTree(JCTree node, Kind kind) { + switch (kind) { + case COMPILATION_UNIT: + return buildCompilationUnit((JCCompilationUnit) node); + case TYPE: + return buildType((JCClassDecl) node); + case FIELD: + return buildField((JCVariableDecl) node); + case INITIALIZER: + return buildInitializer((JCBlock) node); + case METHOD: + return buildMethod((JCMethodDecl) node); + case ARGUMENT: + return buildLocalVar((JCVariableDecl) node, kind); + case LOCAL: + return buildLocalVar((JCVariableDecl) node, kind); + case STATEMENT: + return buildStatementOrExpression(node); + case ANNOTATION: + return buildAnnotation((JCAnnotation) node); + default: + throw new AssertionError("Did not expect: " + kind); + } + } + + private JavacNode buildCompilationUnit(JCCompilationUnit top) { + List<JavacNode> childNodes = new ArrayList<JavacNode>(); + for (JCTree s : top.defs) { + if (s instanceof JCClassDecl) { + addIfNotNull(childNodes, buildType((JCClassDecl)s)); + } // else they are import statements, which we don't care about. Or Skip objects, whatever those are. + } + + return new JavacNode(this, top, childNodes, Kind.COMPILATION_UNIT); + } + + private JavacNode buildType(JCClassDecl type) { + if (setAndGetAsHandled(type)) return null; + List<JavacNode> childNodes = new ArrayList<JavacNode>(); + + for (JCTree def : type.defs) { + for (JCAnnotation annotation : type.mods.annotations) addIfNotNull(childNodes, buildAnnotation(annotation)); + /* A def can be: + * JCClassDecl for inner types + * JCMethodDecl for constructors and methods + * JCVariableDecl for fields + * JCBlock for (static) initializers + */ + if (def instanceof JCMethodDecl) addIfNotNull(childNodes, buildMethod((JCMethodDecl)def)); + else if (def instanceof JCClassDecl) addIfNotNull(childNodes, buildType((JCClassDecl)def)); + else if (def instanceof JCVariableDecl) addIfNotNull(childNodes, buildField((JCVariableDecl)def)); + else if (def instanceof JCBlock) addIfNotNull(childNodes, buildInitializer((JCBlock)def)); + } + + return putInMap(new JavacNode(this, type, childNodes, Kind.TYPE)); + } + + private JavacNode buildField(JCVariableDecl field) { + if (setAndGetAsHandled(field)) return null; + List<JavacNode> childNodes = new ArrayList<JavacNode>(); + for (JCAnnotation annotation : field.mods.annotations) addIfNotNull(childNodes, buildAnnotation(annotation)); + addIfNotNull(childNodes, buildExpression(field.init)); + return putInMap(new JavacNode(this, field, childNodes, Kind.FIELD)); + } + + private JavacNode buildLocalVar(JCVariableDecl local, Kind kind) { + if (setAndGetAsHandled(local)) return null; + List<JavacNode> childNodes = new ArrayList<JavacNode>(); + for (JCAnnotation annotation : local.mods.annotations) addIfNotNull(childNodes, buildAnnotation(annotation)); + addIfNotNull(childNodes, buildExpression(local.init)); + return putInMap(new JavacNode(this, local, childNodes, kind)); + } + + private JavacNode buildInitializer(JCBlock initializer) { + if (setAndGetAsHandled(initializer)) return null; + List<JavacNode> childNodes = new ArrayList<JavacNode>(); + for (JCStatement statement: initializer.stats) addIfNotNull(childNodes, buildStatement(statement)); + return putInMap(new JavacNode(this, initializer, childNodes, Kind.INITIALIZER)); + } + + private JavacNode buildMethod(JCMethodDecl method) { + if (setAndGetAsHandled(method)) return null; + List<JavacNode> childNodes = new ArrayList<JavacNode>(); + for (JCAnnotation annotation : method.mods.annotations) addIfNotNull(childNodes, buildAnnotation(annotation)); + for (JCVariableDecl param : method.params) addIfNotNull(childNodes, buildLocalVar(param, Kind.ARGUMENT)); + if (method.body != null && method.body.stats != null) { + for (JCStatement statement : method.body.stats) addIfNotNull(childNodes, buildStatement(statement)); + } + return putInMap(new JavacNode(this, method, childNodes, Kind.METHOD)); + } + + private JavacNode buildAnnotation(JCAnnotation annotation) { + if (setAndGetAsHandled(annotation)) return null; + return putInMap(new JavacNode(this, annotation, null, Kind.ANNOTATION)); + } + + private JavacNode buildExpression(JCExpression expression) { + return buildStatementOrExpression(expression); + } + + private JavacNode buildStatement(JCStatement statement) { + return buildStatementOrExpression(statement); + } + + private JavacNode buildStatementOrExpression(JCTree statement) { + if (statement == null) return null; + if (statement instanceof JCAnnotation) return null; + if (statement instanceof JCClassDecl) return buildType((JCClassDecl)statement); + if (statement instanceof JCVariableDecl) return buildLocalVar((JCVariableDecl)statement, Kind.LOCAL); + + if (setAndGetAsHandled(statement)) return null; + + return drill(statement); + } + + private JavacNode drill(JCTree statement) { + List<JavacNode> childNodes = new ArrayList<JavacNode>(); + for (FieldAccess fa : fieldsOf(statement.getClass())) childNodes.addAll(buildWithField(JavacNode.class, statement, fa)); + return putInMap(new JavacNode(this, statement, childNodes, Kind.STATEMENT)); + } + + /** For javac, both JCExpression and JCStatement are considered as valid children types. */ + @Override + protected Collection<Class<? extends JCTree>> getStatementTypes() { + Collection<Class<? extends JCTree>> collection = new ArrayList<Class<? extends JCTree>>(2); + collection.add(JCStatement.class); + collection.add(JCExpression.class); + return collection; + } + + private static void addIfNotNull(Collection<JavacNode> nodes, JavacNode node) { + if (node != null) nodes.add(node); + } + + /** Supply either a position or a node (in that case, position of the node is used) */ + void printMessage(Diagnostic.Kind kind, String message, JavacNode node, DiagnosticPosition pos) { + JavaFileObject oldSource = null; + JavaFileObject newSource = null; + JCTree astObject = node == null ? null : node.get(); + JCCompilationUnit top = (JCCompilationUnit) top().get(); + newSource = top.sourcefile; + if (newSource != null) { + oldSource = log.useSource(newSource); + if (pos == null) pos = astObject.pos(); + } + try { + switch (kind) { + case ERROR: + increaseErrorCount(messager); + boolean prev = log.multipleErrors; + log.multipleErrors = true; + try { + log.error(pos, "proc.messager", message); + } finally { + log.multipleErrors = prev; + } + break; + default: + case WARNING: + log.warning(pos, "proc.messager", message); + break; + } + } finally { + if (oldSource != null) log.useSource(oldSource); + } + } + + /** {@inheritDoc} */ + @Override protected void setElementInASTCollection(Field field, Object refField, List<Collection<?>> chain, Collection<?> collection, int idx, JCTree newN) throws IllegalAccessException { + com.sun.tools.javac.util.List<?> list = setElementInConsList(chain, collection, ((List<?>)collection).get(idx), newN); + field.set(refField, list); + } + + private com.sun.tools.javac.util.List<?> setElementInConsList(List<Collection<?>> chain, Collection<?> current, Object oldO, Object newO) { + com.sun.tools.javac.util.List<?> oldL = (com.sun.tools.javac.util.List<?>) current; + com.sun.tools.javac.util.List<?> newL = replaceInConsList(oldL, oldO, newO); + if (chain.isEmpty()) return newL; + List<Collection<?>> reducedChain = new ArrayList<Collection<?>>(chain); + Collection<?> newCurrent = reducedChain.remove(reducedChain.size() -1); + return setElementInConsList(reducedChain, newCurrent, oldL, newL); + } + + private com.sun.tools.javac.util.List<?> replaceInConsList(com.sun.tools.javac.util.List<?> oldL, Object oldO, Object newO) { + boolean repl = false; + Object[] a = oldL.toArray(); + for (int i = 0; i < a.length; i++) { + if (a[i] == oldO) { + a[i] = newO; + repl = true; + } + } + + if (repl) return com.sun.tools.javac.util.List.<Object>from(a); + return oldL; + } + + private void increaseErrorCount(Messager m) { + try { + Field f = m.getClass().getDeclaredField("errorCount"); + f.setAccessible(true); + if (f.getType() == int.class) { + int val = ((Number)f.get(m)).intValue(); + f.set(m, val +1); + } + } catch (Throwable t) { + //Very unfortunate, but in most cases it still works fine, so we'll silently swallow it. + } + } +} diff --git a/src/core/lombok/javac/JavacASTAdapter.java b/src/core/lombok/javac/JavacASTAdapter.java new file mode 100644 index 00000000..41bc46d3 --- /dev/null +++ b/src/core/lombok/javac/JavacASTAdapter.java @@ -0,0 +1,98 @@ +/* + * Copyright © 2009 Reinier Zwitserloot and Roel Spilker. + * + * 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.javac; + +import com.sun.tools.javac.tree.JCTree; +import com.sun.tools.javac.tre |
