Examples with JCVariableDecl com.sun.tools.javac.tree.JCTree.JCVariableDecl used on opensource projects

Example 1 with JCVariableDecl

use of com.sun.tools.javac.tree.JCTree.JCVariableDecl in project lombok by rzwitserloot.

the class HandleCleanup method handle.

@Override
public void handle(AnnotationValues<Cleanup> annotation, JCAnnotation ast, JavacNode annotationNode) {
    handleFlagUsage(annotationNode, ConfigurationKeys.CLEANUP_FLAG_USAGE, "@Cleanup");
    if (inNetbeansEditor(annotationNode))
        return;
    deleteAnnotationIfNeccessary(annotationNode, Cleanup.class);
    String cleanupName = annotation.getInstance().value();
    if (cleanupName.length() == 0) {
        annotationNode.addError("cleanupName cannot be the empty string.");
        return;
    }
    if (annotationNode.up().getKind() != Kind.LOCAL) {
        annotationNode.addError("@Cleanup is legal only on local variable declarations.");
        return;
    }
    JCVariableDecl decl = (JCVariableDecl) annotationNode.up().get();
    if (decl.init == null) {
        annotationNode.addError("@Cleanup variable declarations need to be initialized.");
        return;
    }
    JavacNode ancestor = annotationNode.up().directUp();
    JCTree blockNode = ancestor.get();
    final List<JCStatement> statements;
    if (blockNode instanceof JCBlock) {
        statements = ((JCBlock) blockNode).stats;
    } else if (blockNode instanceof JCCase) {
        statements = ((JCCase) blockNode).stats;
    } else if (blockNode instanceof JCMethodDecl) {
        statements = ((JCMethodDecl) blockNode).body.stats;
    } else {
        annotationNode.addError("@Cleanup is legal only on a local variable declaration inside a block.");
        return;
    }
    boolean seenDeclaration = false;
    ListBuffer<JCStatement> newStatements = new ListBuffer<JCStatement>();
    ListBuffer<JCStatement> tryBlock = new ListBuffer<JCStatement>();
    for (JCStatement statement : statements) {
        if (!seenDeclaration) {
            if (statement == decl)
                seenDeclaration = true;
            newStatements.append(statement);
        } else {
            tryBlock.append(statement);
        }
    }
    if (!seenDeclaration) {
        annotationNode.addError("LOMBOK BUG: Can't find this local variable declaration inside its parent.");
        return;
    }
    doAssignmentCheck(annotationNode, tryBlock.toList(), decl.name);
    JavacTreeMaker maker = annotationNode.getTreeMaker();
    JCFieldAccess cleanupMethod = maker.Select(maker.Ident(decl.name), annotationNode.toName(cleanupName));
    List<JCStatement> cleanupCall = List.<JCStatement>of(maker.Exec(maker.Apply(List.<JCExpression>nil(), cleanupMethod, List.<JCExpression>nil())));
    JCExpression preventNullAnalysis = preventNullAnalysis(maker, annotationNode, maker.Ident(decl.name));
    JCBinary isNull = maker.Binary(CTC_NOT_EQUAL, preventNullAnalysis, maker.Literal(CTC_BOT, null));
    JCIf ifNotNullCleanup = maker.If(isNull, maker.Block(0, cleanupCall), null);
    Context context = annotationNode.getContext();
    JCBlock finalizer = recursiveSetGeneratedBy(maker.Block(0, List.<JCStatement>of(ifNotNullCleanup)), ast, context);
    newStatements.append(setGeneratedBy(maker.Try(setGeneratedBy(maker.Block(0, tryBlock.toList()), ast, context), List.<JCCatch>nil(), finalizer), ast, context));
    if (blockNode instanceof JCBlock) {
        ((JCBlock) blockNode).stats = newStatements.toList();
    } else if (blockNode instanceof JCCase) {
        ((JCCase) blockNode).stats = newStatements.toList();
    } else if (blockNode instanceof JCMethodDecl) {
        ((JCMethodDecl) blockNode).body.stats = newStatements.toList();
    } else
        throw new AssertionError("Should not get here");
    ancestor.rebuild();
}

Example 2 with JCVariableDecl

use of com.sun.tools.javac.tree.JCTree.JCVariableDecl in project lombok by rzwitserloot.

the class HandleConstructor method createStaticConstructor.

public JCMethodDecl createStaticConstructor(String name, AccessLevel level, JavacNode typeNode, List<JavacNode> fields, JCTree source) {
    JavacTreeMaker maker = typeNode.getTreeMaker();
    JCClassDecl type = (JCClassDecl) typeNode.get();
    JCModifiers mods = maker.Modifiers(Flags.STATIC | toJavacModifier(level));
    JCExpression returnType, constructorType;
    ListBuffer<JCTypeParameter> typeParams = new ListBuffer<JCTypeParameter>();
    ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>();
    ListBuffer<JCExpression> typeArgs1 = new ListBuffer<JCExpression>();
    ListBuffer<JCExpression> typeArgs2 = new ListBuffer<JCExpression>();
    ListBuffer<JCExpression> args = new ListBuffer<JCExpression>();
    if (!type.typarams.isEmpty()) {
        for (JCTypeParameter param : type.typarams) {
            typeArgs1.append(maker.Ident(param.name));
            typeArgs2.append(maker.Ident(param.name));
            typeParams.append(maker.TypeParameter(param.name, param.bounds));
        }
        returnType = maker.TypeApply(maker.Ident(type.name), typeArgs1.toList());
        constructorType = maker.TypeApply(maker.Ident(type.name), typeArgs2.toList());
    } else {
        returnType = maker.Ident(type.name);
        constructorType = maker.Ident(type.name);
    }
    for (JavacNode fieldNode : fields) {
        JCVariableDecl field = (JCVariableDecl) fieldNode.get();
        Name fieldName = removePrefixFromField(fieldNode);
        JCExpression pType = cloneType(maker, field.vartype, source, typeNode.getContext());
        List<JCAnnotation> nonNulls = findAnnotations(fieldNode, NON_NULL_PATTERN);
        List<JCAnnotation> nullables = findAnnotations(fieldNode, NULLABLE_PATTERN);
        long flags = JavacHandlerUtil.addFinalIfNeeded(Flags.PARAMETER, typeNode.getContext());
        JCVariableDecl param = maker.VarDef(maker.Modifiers(flags, nonNulls.appendList(nullables)), fieldName, pType, null);
        params.append(param);
        args.append(maker.Ident(fieldName));
    }
    JCReturn returnStatement = maker.Return(maker.NewClass(null, List.<JCExpression>nil(), constructorType, args.toList(), null));
    JCBlock body = maker.Block(0, List.<JCStatement>of(returnStatement));
    return recursiveSetGeneratedBy(maker.MethodDef(mods, typeNode.toName(name), returnType, typeParams.toList(), params.toList(), List.<JCExpression>nil(), body, null), source, typeNode.getContext());
}

Example 3 with JCVariableDecl

use of com.sun.tools.javac.tree.JCTree.JCVariableDecl in project lombok by rzwitserloot.

the class JavacAST method buildTry.

private JavacNode buildTry(JCTry tryNode) {
    if (setAndGetAsHandled(tryNode))
        return null;
    List<JavacNode> childNodes = new ArrayList<JavacNode>();
    for (JCTree varDecl : getResourcesForTryNode(tryNode)) {
        if (varDecl instanceof JCVariableDecl) {
            addIfNotNull(childNodes, buildLocalVar((JCVariableDecl) varDecl, Kind.LOCAL));
        }
    }
    addIfNotNull(childNodes, buildStatement(tryNode.body));
    for (JCCatch jcc : tryNode.catchers) addIfNotNull(childNodes, buildTree(jcc, Kind.STATEMENT));
    addIfNotNull(childNodes, buildStatement(tryNode.finalizer));
    return putInMap(new JavacNode(this, tryNode, childNodes, Kind.STATEMENT));
}

Example 4 with JCVariableDecl

use of com.sun.tools.javac.tree.JCTree.JCVariableDecl in project lombok by rzwitserloot.

the class HandleDelegate method handle.

@Override
public void handle(AnnotationValues<Delegate> annotation, JCAnnotation ast, JavacNode annotationNode) {
    handleExperimentalFlagUsage(annotationNode, ConfigurationKeys.DELEGATE_FLAG_USAGE, "@Delegate");
    @SuppressWarnings("deprecation") Class<? extends Annotation> oldDelegate = lombok.Delegate.class;
    deleteAnnotationIfNeccessary(annotationNode, Delegate.class, oldDelegate);
    Type delegateType;
    Name delegateName = annotationNode.toName(annotationNode.up().getName());
    DelegateReceiver delegateReceiver;
    JavacResolution reso = new JavacResolution(annotationNode.getContext());
    JCTree member = annotationNode.up().get();
    if (annotationNode.up().getKind() == Kind.FIELD) {
        if ((((JCVariableDecl) member).mods.flags & Flags.STATIC) != 0) {
            annotationNode.addError(LEGALITY_OF_DELEGATE);
            return;
        }
        delegateReceiver = DelegateReceiver.FIELD;
        delegateType = member.type;
        if (delegateType == null)
            reso.resolveClassMember(annotationNode.up());
        delegateType = member.type;
    } else if (annotationNode.up().getKind() == Kind.METHOD) {
        if (!(member instanceof JCMethodDecl)) {
            annotationNode.addError(LEGALITY_OF_DELEGATE);
            return;
        }
        JCMethodDecl methodDecl = (JCMethodDecl) member;
        if (!methodDecl.params.isEmpty() || (methodDecl.mods.flags & Flags.STATIC) != 0) {
            annotationNode.addError(LEGALITY_OF_DELEGATE);
            return;
        }
        delegateReceiver = DelegateReceiver.METHOD;
        delegateType = methodDecl.restype.type;
        if (delegateType == null)
            reso.resolveClassMember(annotationNode.up());
        delegateType = methodDecl.restype.type;
    } else {
        // As the annotation is legal on fields and methods only, javac itself will take care of printing an error message for this.
        return;
    }
    List<Object> delegateTypes = annotation.getActualExpressions("types");
    List<Object> excludeTypes = annotation.getActualExpressions("excludes");
    List<Type> toDelegate = new ArrayList<Type>();
    List<Type> toExclude = new ArrayList<Type>();
    if (delegateTypes.isEmpty()) {
        if (delegateType != null)
            toDelegate.add(delegateType);
    } else {
        for (Object dt : delegateTypes) {
            if (dt instanceof JCFieldAccess && ((JCFieldAccess) dt).name.toString().equals("class")) {
                Type type = ((JCFieldAccess) dt).selected.type;
                if (type == null)
                    reso.resolveClassMember(annotationNode);
                type = ((JCFieldAccess) dt).selected.type;
                if (type != null)
                    toDelegate.add(type);
            }
        }
    }
    for (Object et : excludeTypes) {
        if (et instanceof JCFieldAccess && ((JCFieldAccess) et).name.toString().equals("class")) {
            Type type = ((JCFieldAccess) et).selected.type;
            if (type == null)
                reso.resolveClassMember(annotationNode);
            type = ((JCFieldAccess) et).selected.type;
            if (type != null)
                toExclude.add(type);
        }
    }
    List<MethodSig> signaturesToDelegate = new ArrayList<MethodSig>();
    List<MethodSig> signaturesToExclude = new ArrayList<MethodSig>();
    Set<String> banList = new HashSet<String>();
    banList.addAll(METHODS_IN_OBJECT);
    try {
        for (Type t : toExclude) {
            if (t instanceof ClassType) {
                ClassType ct = (ClassType) t;
                addMethodBindings(signaturesToExclude, ct, annotationNode.getTypesUtil(), banList);
            } else {
                annotationNode.addError("@Delegate can only use concrete class types, not wildcards, arrays, type variables, or primitives.");
                return;
            }
        }
        for (MethodSig sig : signaturesToExclude) {
            banList.add(printSig(sig.type, sig.name, annotationNode.getTypesUtil()));
        }
        for (Type t : toDelegate) {
            if (t instanceof ClassType) {
                ClassType ct = (ClassType) t;
                addMethodBindings(signaturesToDelegate, ct, annotationNode.getTypesUtil(), banList);
            } else {
                annotationNode.addError("@Delegate can only use concrete class types, not wildcards, arrays, type variables, or primitives.");
                return;
            }
        }
        for (MethodSig sig : signaturesToDelegate) generateAndAdd(sig, annotationNode, delegateName, delegateReceiver);
    } catch (DelegateRecursion e) {
        annotationNode.addError(String.format(RECURSION_NOT_ALLOWED, e.member, e.type));
    }
}

Example 5 with JCVariableDecl

use of com.sun.tools.javac.tree.JCTree.JCVariableDecl in project lombok by rzwitserloot.

the class HandleDelegate method createDelegateMethod.

public JCMethodDecl createDelegateMethod(MethodSig sig, JavacNode annotation, Name delegateName, DelegateReceiver delegateReceiver) throws TypeNotConvertibleException, CantMakeDelegates {
    /* public <T, U, ...> ReturnType methodName(ParamType1 name1, ParamType2 name2, ...) throws T1, T2, ... {
		 *      (return) delegate.<T, U>methodName(name1, name2);
		 *  }
		 */
    checkConflictOfTypeVarNames(sig, annotation);
    JavacTreeMaker maker = annotation.getTreeMaker();
    com.sun.tools.javac.util.List<JCAnnotation> annotations;
    if (sig.isDeprecated) {
        annotations = com.sun.tools.javac.util.List.of(maker.Annotation(genJavaLangTypeRef(annotation, "Deprecated"), com.sun.tools.javac.util.List.<JCExpression>nil()));
    } else {
        annotations = com.sun.tools.javac.util.List.nil();
    }
    JCModifiers mods = maker.Modifiers(PUBLIC, annotations);
    JCExpression returnType = JavacResolution.typeToJCTree((Type) sig.type.getReturnType(), annotation.getAst(), true);
    boolean useReturn = sig.type.getReturnType().getKind() != TypeKind.VOID;
    ListBuffer<JCVariableDecl> params = sig.type.getParameterTypes().isEmpty() ? null : new ListBuffer<JCVariableDecl>();
    ListBuffer<JCExpression> args = sig.type.getParameterTypes().isEmpty() ? null : new ListBuffer<JCExpression>();
    ListBuffer<JCExpression> thrown = sig.type.getThrownTypes().isEmpty() ? null : new ListBuffer<JCExpression>();
    ListBuffer<JCTypeParameter> typeParams = sig.type.getTypeVariables().isEmpty() ? null : new ListBuffer<JCTypeParameter>();
    ListBuffer<JCExpression> typeArgs = sig.type.getTypeVariables().isEmpty() ? null : new ListBuffer<JCExpression>();
    Types types = Types.instance(annotation.getContext());
    for (TypeMirror param : sig.type.getTypeVariables()) {
        Name name = ((TypeVar) param).tsym.name;
        ListBuffer<JCExpression> bounds = new ListBuffer<JCExpression>();
        for (Type type : types.getBounds((TypeVar) param)) {
            bounds.append(JavacResolution.typeToJCTree(type, annotation.getAst(), true));
        }
        typeParams.append(maker.TypeParameter(name, bounds.toList()));
        typeArgs.append(maker.Ident(name));
    }
    for (TypeMirror ex : sig.type.getThrownTypes()) {
        thrown.append(JavacResolution.typeToJCTree((Type) ex, annotation.getAst(), true));
    }
    int idx = 0;
    String[] paramNames = sig.getParameterNames();
    boolean varargs = sig.elem.isVarArgs();
    for (TypeMirror param : sig.type.getParameterTypes()) {
        long flags = JavacHandlerUtil.addFinalIfNeeded(Flags.PARAMETER, annotation.getContext());
        JCModifiers paramMods = maker.Modifiers(flags);
        Name name = annotation.toName(paramNames[idx++]);
        if (varargs && idx == paramNames.length) {
            paramMods.flags |= VARARGS;
        }
        params.append(maker.VarDef(paramMods, name, JavacResolution.typeToJCTree((Type) param, annotation.getAst(), true), null));
        args.append(maker.Ident(name));
    }
    JCExpression delegateCall = maker.Apply(toList(typeArgs), maker.Select(delegateReceiver.get(annotation, delegateName), sig.name), toList(args));
    JCStatement body = useReturn ? maker.Return(delegateCall) : maker.Exec(delegateCall);
    JCBlock bodyBlock = maker.Block(0, com.sun.tools.javac.util.List.of(body));
    return recursiveSetGeneratedBy(maker.MethodDef(mods, sig.name, returnType, toList(typeParams), toList(params), toList(thrown), bodyBlock, null), annotation.get(), annotation.getContext());
}