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

Example 6 with JCNewClass

use of com.sun.tools.javac.tree.JCTree.JCNewClass in project ceylon-compiler by ceylon.

the class ClassTransformer method transformObject.

private List<JCTree> transformObject(Node def, Tree.Declaration annotated, Tree.SatisfiedTypes satisfiesTypes, Value model, Class klass, ClassDefinitionBuilder containingClassBuilder, boolean makeLocalInstance) {
    naming.clearSubstitutions(klass);
    String name = klass.getName();
    String javaClassName = Naming.quoteClassName(name);
    ClassDefinitionBuilder objectClassBuilder = ClassDefinitionBuilder.object(this, javaClassName, name, Decl.isLocal(klass)).forDefinition(klass);
    if (Strategy.introduceJavaIoSerializable(klass, typeFact().getJavaIoSerializable())) {
        objectClassBuilder.introduce(make().QualIdent(syms().serializableType.tsym));
        if (def instanceof Tree.ObjectDefinition && klass.isMember() && (klass.isShared() || klass.isCaptured() || model.isCaptured())) {
            addWriteReplace(klass, objectClassBuilder);
        }
    }
    makeReadResolve(objectClassBuilder, klass, model);
    // Make sure top types satisfy reified type
    addReifiedTypeInterface(objectClassBuilder, klass);
    if (supportsReifiedAlias(klass))
        objectClassBuilder.reifiedAlias(klass.getType());
    CeylonVisitor visitor = gen().visitor;
    final ListBuffer<JCTree> prevDefs = visitor.defs;
    final boolean prevInInitializer = visitor.inInitializer;
    final ClassDefinitionBuilder prevClassBuilder = visitor.classBuilder;
    List<JCStatement> childDefs;
    try {
        visitor.defs = new ListBuffer<JCTree>();
        visitor.inInitializer = true;
        visitor.classBuilder = objectClassBuilder;
        def.visitChildren(visitor);
        childDefs = (List<JCStatement>) visitor.getResult().toList();
    } finally {
        visitor.classBuilder = prevClassBuilder;
        visitor.inInitializer = prevInInitializer;
        visitor.defs = prevDefs;
    }
    addMissingUnrefinedMembers(def, klass, objectClassBuilder);
    satisfaction(satisfiesTypes, klass, objectClassBuilder);
    serialization(klass, objectClassBuilder);
    if (model != null && Decl.isToplevel(model) && def instanceof Tree.ObjectDefinition) {
        // generate a field and getter
        AttributeDefinitionBuilder builder = AttributeDefinitionBuilder.wrapped(this, null, objectClassBuilder, model.getName(), model, true).userAnnotations(makeAtIgnore()).userAnnotationsSetter(makeAtIgnore()).immutable().initialValue(makeNewClass(naming.makeName(model, Naming.NA_FQ | Naming.NA_WRAPPER))).is(PUBLIC, Decl.isShared(klass)).is(STATIC, true);
        if (annotated != null) {
            builder.fieldAnnotations(expressionGen().transformAnnotations(OutputElement.FIELD, annotated));
            builder.userAnnotations(expressionGen().transformAnnotations(OutputElement.GETTER, annotated));
        }
        objectClassBuilder.defs(builder.build());
    }
    if (annotated != null) {
        objectClassBuilder.annotations(expressionGen().transformAnnotations(OutputElement.TYPE, annotated));
        objectClassBuilder.getInitBuilder().userAnnotations(expressionGen().transformAnnotations(OutputElement.CONSTRUCTOR, annotated));
    }
    // make sure we set the container in case we move it out
    addAtContainer(objectClassBuilder, klass);
    objectClassBuilder.annotations(makeAtObject()).satisfies(klass.getSatisfiedTypes()).defs((List) childDefs);
    objectClassBuilder.getInitBuilder().modifiers(PRIVATE);
    objectClassBuilder.addGetTypeMethod(klass.getType());
    if (model != null)
        objectClassBuilder.modelAnnotations(model.getAnnotations()).modifiers(transformObjectDeclFlags(model));
    List<JCTree> result = objectClassBuilder.build();
    if (makeLocalInstance) {
        if (model.isSelfCaptured()) {
            // if it's captured we need to box it and define the var before the class, so it can access it
            JCNewClass newInstance = makeNewClass(objectClassBuilder.getClassName(), false, null);
            JCFieldAccess setter = naming.makeSelect(Naming.getLocalValueName(model), Naming.getSetterName(model));
            JCStatement assign = make().Exec(make().Assign(setter, newInstance));
            result = result.prepend(assign);
            JCVariableDecl localDecl = makeVariableBoxDecl(null, model);
            result = result.prepend(localDecl);
        } else {
            // not captured, we can define the var after the class
            JCVariableDecl localDecl = makeLocalIdentityInstance(name, objectClassBuilder.getClassName(), false);
            result = result.append(localDecl);
        }
    } else if (model != null && Decl.withinClassOrInterface(model)) {
        boolean generateGetter = Decl.isCaptured(model);
        JCExpression type = makeJavaType(klass.getType());
        if (generateGetter) {
            int modifiers = TRANSIENT | PRIVATE;
            JCExpression initialValue = makeNull();
            containingClassBuilder.field(modifiers, name, type, initialValue, false);
            AttributeDefinitionBuilder getter = AttributeDefinitionBuilder.getter(this, name, model).modifiers(transformAttributeGetSetDeclFlags(model, false));
            if (def instanceof Tree.ObjectDefinition) {
                getter.userAnnotations(expressionGen().transformAnnotations(OutputElement.GETTER, ((Tree.ObjectDefinition) def)));
            }
            ListBuffer<JCStatement> stmts = ListBuffer.<JCStatement>lb();
            stmts.add(make().If(make().Binary(JCTree.EQ, naming.makeUnquotedIdent(Naming.quoteFieldName(name)), makeNull()), make().Exec(make().Assign(naming.makeUnquotedIdent(Naming.quoteFieldName(name)), makeNewClass(makeJavaType(klass.getType()), null))), null));
            stmts.add(make().Return(naming.makeUnquotedIdent(Naming.quoteFieldName(name))));
            getter.getterBlock(make().Block(0, stmts.toList()));
            result = result.appendList(getter.build());
        } else {
            int modifiers = FINAL;
            JCExpression initialValue = makeNewClass(makeJavaType(klass.getType()), null);
            containingClassBuilder.field(modifiers, name, type, initialValue, true);
        }
    }
    return result;
}

Example 7 with JCNewClass

use of com.sun.tools.javac.tree.JCTree.JCNewClass in project ceylon-compiler by ceylon.

the class ExpressionTransformer method transformSpreadOperator.

private JCExpression transformSpreadOperator(final Tree.QualifiedMemberOrTypeExpression expr, TermTransformer transformer) {
    at(expr);
    boolean spreadMethodReferenceOuter = !expr.equals(this.spreading) && !isWithinInvocation() && isCeylonCallableSubtype(expr.getTypeModel());
    boolean spreadMethodReferenceInner = expr.equals(this.spreading) && isWithinInvocation();
    Tree.QualifiedMemberOrTypeExpression oldSpreading = spreading;
    if (spreadMethodReferenceOuter) {
        spreading = expr;
    }
    try {
        Naming.SyntheticName varBaseName = naming.alias("spread");
        ListBuffer<JCStatement> letStmts = ListBuffer.<JCStatement>lb();
        final Naming.SyntheticName srcIterableName;
        if (spreadMethodReferenceInner) {
            // use the var we initialized in the outer
            srcIterableName = this.memberPrimary;
        } else {
            srcIterableName = varBaseName.suffixedBy(Suffix.$iterable$);
        }
        if (spreadMethodReferenceOuter) {
            // if we're in the outer, note then name of the var for use in the inner.
            this.memberPrimary = srcIterableName;
        }
        Naming.SyntheticName srcIteratorName = varBaseName.suffixedBy(Suffix.$iterator$);
        Type srcElementType = expr.getTarget().getQualifyingType();
        JCExpression srcIterableTypeExpr = makeJavaType(typeFact().getIterableType(srcElementType), JT_NO_PRIMITIVES);
        JCExpression srcIterableExpr;
        boolean isSuperOrSuperOf = false;
        if (spreadMethodReferenceInner) {
            srcIterableExpr = srcIterableName.makeIdent();
        } else {
            boolean isSuper = isSuper(expr.getPrimary());
            isSuperOrSuperOf = isSuper || isSuperOf(expr.getPrimary());
            if (isSuperOrSuperOf) {
                // so we just refer to it later
                if (isSuper) {
                    Declaration member = expr.getPrimary().getTypeModel().getDeclaration().getMember("iterator", null, false);
                    srcIterableExpr = transformSuper(expr, (TypeDeclaration) member.getContainer());
                } else
                    srcIterableExpr = transformSuperOf(expr, expr.getPrimary(), "iterator");
            } else {
                srcIterableExpr = transformExpression(expr.getPrimary(), BoxingStrategy.BOXED, typeFact().getIterableType(srcElementType));
            }
        }
        // do not capture the iterable for super invocations: see above
        if (!spreadMethodReferenceInner && !isSuperOrSuperOf) {
            JCVariableDecl srcIterable = null;
            srcIterable = makeVar(Flags.FINAL, srcIterableName, srcIterableTypeExpr, srcIterableExpr);
            letStmts.prepend(srcIterable);
        }
        Type resultElementType = expr.getTarget().getType();
        Type resultAbsentType = typeFact().getIteratedAbsentType(expr.getPrimary().getTypeModel());
        // private Iterator<srcElementType> iterator = srcIterableName.iterator();
        JCVariableDecl srcIterator = makeVar(Flags.FINAL, srcIteratorName, makeJavaType(typeFact().getIteratorType(srcElementType)), make().Apply(null, // for super we do not capture it because we can't and it's constant anyways
        naming.makeQualIdent(isSuperOrSuperOf ? srcIterableExpr : srcIterableName.makeIdent(), "iterator"), List.<JCExpression>nil()));
        Naming.SyntheticName iteratorResultName = varBaseName.suffixedBy(Suffix.$element$);
        /* public Object next() {
             *     Object result;
             *     if (!((result = iterator.next()) instanceof Finished)) {
             *         result = transformedMember(result);
             *     }
             *     return result;
             */
        /* Any arguments in the member of the spread would get re-evaluated on each iteration
             * so we need to shift them to the scope of the Let to ensure they're evaluated once. 
             */
        boolean aliasArguments = (transformer instanceof InvocationTermTransformer) && ((InvocationTermTransformer) transformer).invocation.getNode() instanceof Tree.InvocationExpression && ((Tree.InvocationExpression) ((InvocationTermTransformer) transformer).invocation.getNode()).getPositionalArgumentList() != null;
        if (aliasArguments) {
            ((InvocationTermTransformer) transformer).callBuilder.argumentHandling(CallBuilder.CB_ALIAS_ARGS, varBaseName);
        }
        JCNewClass iterableClass;
        boolean prevSyntheticClassBody = expressionGen().withinSyntheticClassBody(true);
        try {
            JCExpression transformedElement = applyErasureAndBoxing(iteratorResultName.makeIdent(), typeFact().getAnythingType(), CodegenUtil.hasTypeErased(expr.getPrimary()), true, BoxingStrategy.BOXED, srcElementType, 0);
            transformedElement = transformMemberExpression(expr, transformedElement, transformer);
            // be handled by the previous recursion
            if (spreadMethodReferenceOuter) {
                return make().LetExpr(letStmts.toList(), transformedElement);
            }
            transformedElement = applyErasureAndBoxing(transformedElement, resultElementType, // not necessarily of the applied member
            expr.getTarget().getDeclaration() instanceof TypedDeclaration ? CodegenUtil.hasTypeErased((TypedDeclaration) expr.getTarget().getDeclaration()) : false, !CodegenUtil.isUnBoxed(expr), BoxingStrategy.BOXED, resultElementType, 0);
            MethodDefinitionBuilder nextMdb = MethodDefinitionBuilder.systemMethod(this, "next");
            nextMdb.isOverride(true);
            nextMdb.annotationFlags(Annotations.IGNORE);
            nextMdb.modifiers(Flags.PUBLIC | Flags.FINAL);
            nextMdb.resultType(null, make().Type(syms().objectType));
            nextMdb.body(List.of(makeVar(iteratorResultName, make().Type(syms().objectType), null), make().If(make().Unary(JCTree.NOT, make().TypeTest(make().Assign(iteratorResultName.makeIdent(), make().Apply(null, naming.makeQualIdent(srcIteratorName.makeIdent(), "next"), List.<JCExpression>nil())), make().Type(syms().ceylonFinishedType))), make().Block(0, List.<JCStatement>of(make().Exec(make().Assign(iteratorResultName.makeIdent(), transformedElement)))), null), make().Return(iteratorResultName.makeIdent())));
            JCMethodDecl nextMethod = nextMdb.build();
            // new AbstractIterator()
            JCNewClass iteratorClass = make().NewClass(null, null, make().TypeApply(make().QualIdent(syms().ceylonAbstractIteratorType.tsym), List.of(makeJavaType(resultElementType, JT_TYPE_ARGUMENT))), List.of(makeReifiedTypeArgument(resultElementType)), make().AnonymousClassDef(make().Modifiers(0), List.of(srcIterator, nextMethod)));
            MethodDefinitionBuilder iteratorMdb = MethodDefinitionBuilder.systemMethod(this, "iterator");
            iteratorMdb.isOverride(true);
            iteratorMdb.annotationFlags(Annotations.IGNORE);
            iteratorMdb.modifiers(Flags.PUBLIC | Flags.FINAL);
            iteratorMdb.resultType(null, makeJavaType(typeFact().getIteratorType(resultElementType)));
            iteratorMdb.body(make().Return(iteratorClass));
            // new AbstractIterable()
            iterableClass = make().NewClass(null, null, make().TypeApply(make().QualIdent(syms().ceylonAbstractIterableType.tsym), List.of(makeJavaType(resultElementType, JT_TYPE_ARGUMENT), makeJavaType(resultAbsentType, JT_TYPE_ARGUMENT))), List.of(makeReifiedTypeArgument(resultElementType), makeReifiedTypeArgument(resultAbsentType)), make().AnonymousClassDef(make().Modifiers(0), List.<JCTree>of(iteratorMdb.build())));
        } finally {
            expressionGen().withinSyntheticClassBody(prevSyntheticClassBody);
        }
        if (aliasArguments) {
            letStmts = letStmts.appendList(((InvocationTermTransformer) transformer).callBuilder.getStatements());
        }
        JCMethodInvocation result = make().Apply(null, naming.makeQualIdent(iterableClass, "sequence"), List.<JCExpression>nil());
        JCExpression spread = letStmts.isEmpty() ? result : make().LetExpr(letStmts.toList(), result);
        // Do we *statically* know the result must be a Sequence 
        final boolean primaryIsSequence = typeFact().isNonemptyIterableType(expr.getPrimary().getTypeModel());
        Type returnElementType = expr.getTarget().getType();
        if (primaryIsSequence) {
            int flags = EXPR_DOWN_CAST;
            spread = applyErasureAndBoxing(spread, typeFact().getSequentialType(returnElementType), false, true, BoxingStrategy.BOXED, primaryIsSequence ? typeFact().getSequenceType(returnElementType) : typeFact().getSequentialType(returnElementType), flags);
        }
        return spread;
    } finally {
        spreading = oldSpreading;
    }
}

Example 8 with JCNewClass

use of com.sun.tools.javac.tree.JCTree.JCNewClass in project bazel by bazelbuild.

the class InternalUtils method constructor.

/**
     * Determines the symbol for a constructor given an invocation via
     * {@code new}.
     *
     * If the tree is a declaration of an anonymous class, then method returns
     * constructor that gets invoked in the extended class, rather than the
     * anonymous constructor implicitly added by the constructor (JLS 15.9.5.1)
     *
     * @param tree the constructor invocation
     * @return the {@link ExecutableElement} corresponding to the constructor
     *         call in {@code tree}
     */
public static ExecutableElement constructor(NewClassTree tree) {
    if (!(tree instanceof JCTree.JCNewClass)) {
        ErrorReporter.errorAbort("InternalUtils.constructor: not a javac internal tree");
        // dead code
        return null;
    }
    JCNewClass newClassTree = (JCNewClass) tree;
    if (RETURN_INVOKE_CONSTRUCTOR && tree.getClassBody() != null) {
        // anonymous constructor bodies should contain exactly one statement
        // in the form:
        //    super(arg1, ...)
        // or
        //    o.super(arg1, ...)
        //
        // which is a method invocation (!) to the actual constructor
        // the method call is guaranteed to return nonnull
        JCMethodDecl anonConstructor = (JCMethodDecl) TreeInfo.declarationFor(newClassTree.constructor, newClassTree);
        assert anonConstructor != null;
        assert anonConstructor.body.stats.size() == 1;
        JCExpressionStatement stmt = (JCExpressionStatement) anonConstructor.body.stats.head;
        JCTree.JCMethodInvocation superInvok = (JCMethodInvocation) stmt.expr;
        return (ExecutableElement) TreeInfo.symbol(superInvok.meth);
    }
    Element e = newClassTree.constructor;
    assert e instanceof ExecutableElement;
    return (ExecutableElement) e;
}

Example 9 with JCNewClass

use of com.sun.tools.javac.tree.JCTree.JCNewClass in project error-prone by google.

the class HeldLockAnalyzer method handleMonitorGuards.

private static HeldLockSet handleMonitorGuards(VisitorState state, HeldLockSet locks) {
    JCNewClass newClassTree = ASTHelpers.findEnclosingNode(state.getPath(), JCNewClass.class);
    if (newClassTree == null) {
        return locks;
    }
    Symbol clazzSym = ASTHelpers.getSymbol(newClassTree.clazz);
    if (!(clazzSym instanceof ClassSymbol)) {
        return locks;
    }
    if (!((ClassSymbol) clazzSym).fullname.contentEquals(MONITOR_GUARD_CLASS)) {
        return locks;
    }
    Optional<GuardedByExpression> lockExpression = GuardedByBinder.bindExpression(Iterables.getOnlyElement(newClassTree.getArguments()), state);
    if (!lockExpression.isPresent()) {
        return locks;
    }
    return locks.plus(lockExpression.get());
}

Example 10 with JCNewClass

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

the class PrettyPrinter method printEnumMember.

private void printEnumMember(JCVariableDecl tree) {
    printAnnotations(tree.mods.annotations, true);
    print(tree.name);
    if (tree.init instanceof JCNewClass) {
        JCNewClass constructor = (JCNewClass) tree.init;
        if (constructor.args != null && constructor.args.nonEmpty()) {
            print("(");
            print(constructor.args, ", ");
            print(")");
        }
        if (constructor.def != null && constructor.def.defs != null) {
            println(" {");
            indent++;
            printClassMembers(constructor.def.defs, false, false);
            consumeComments(endPos(tree));
            indent--;
            aPrint("}");
        }
    }
}