Examples with NullLiteral org.eclipse.jdt.internal.compiler.ast.NullLiteral used on opensource projects

Example 11 with NullLiteral

use of org.eclipse.jdt.internal.compiler.ast.NullLiteral in project lombok by rzwitserloot.

the class EclipseJavaUtilListSetSingularizer method generateClearMethod.

private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) {
    MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult);
    md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
    md.modifiers = ClassFileConstants.AccPublic;
    FieldReference thisDotField = new FieldReference(data.getPluralName(), 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    FieldReference thisDotField2 = new FieldReference(data.getPluralName(), 0L);
    thisDotField2.receiver = new ThisReference(0, 0);
    md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray();
    MessageSend clearMsg = new MessageSend();
    clearMsg.receiver = thisDotField2;
    clearMsg.selector = "clear".toCharArray();
    Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsg, 0, 0);
    md.statements = returnStatement != null ? new Statement[] { clearStatement, returnStatement } : new Statement[] { clearStatement };
    md.returnType = returnType;
    injectMethod(builderType, md);
}

Example 12 with NullLiteral

use of org.eclipse.jdt.internal.compiler.ast.NullLiteral in project lombok by rzwitserloot.

the class EclipseJavaUtilMapSingularizer method generateClearMethod.

private void generateClearMethod(TypeReference returnType, Statement returnStatement, SingularData data, EclipseNode builderType) {
    MethodDeclaration md = new MethodDeclaration(((CompilationUnitDeclaration) builderType.top().get()).compilationResult);
    md.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
    md.modifiers = ClassFileConstants.AccPublic;
    String pN = new String(data.getPluralName());
    char[] keyFieldName = (pN + "$key").toCharArray();
    char[] valueFieldName = (pN + "$value").toCharArray();
    FieldReference thisDotField = new FieldReference(keyFieldName, 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    FieldReference thisDotField2 = new FieldReference(keyFieldName, 0L);
    thisDotField2.receiver = new ThisReference(0, 0);
    FieldReference thisDotField3 = new FieldReference(valueFieldName, 0L);
    thisDotField3.receiver = new ThisReference(0, 0);
    md.selector = HandlerUtil.buildAccessorName("clear", new String(data.getPluralName())).toCharArray();
    MessageSend clearMsg1 = new MessageSend();
    clearMsg1.receiver = thisDotField2;
    clearMsg1.selector = "clear".toCharArray();
    MessageSend clearMsg2 = new MessageSend();
    clearMsg2.receiver = thisDotField3;
    clearMsg2.selector = "clear".toCharArray();
    Block clearMsgs = new Block(2);
    clearMsgs.statements = new Statement[] { clearMsg1, clearMsg2 };
    Statement clearStatement = new IfStatement(new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.NOT_EQUAL), clearMsgs, 0, 0);
    md.statements = returnStatement != null ? new Statement[] { clearStatement, returnStatement } : new Statement[] { clearStatement };
    md.returnType = returnType;
    injectMethod(builderType, md);
}

Example 13 with NullLiteral

use of org.eclipse.jdt.internal.compiler.ast.NullLiteral in project lombok by rzwitserloot.

the class EclipseJavaUtilSingularizer method createConstructBuilderVarIfNeeded.

protected Statement createConstructBuilderVarIfNeeded(SingularData data, EclipseNode builderType, boolean mapMode) {
    char[] v1Name, v2Name;
    if (mapMode) {
        String n = new String(data.getPluralName());
        v1Name = (n + "$key").toCharArray();
        v2Name = (n + "$value").toCharArray();
    } else {
        v1Name = data.getPluralName();
        v2Name = null;
    }
    FieldReference thisDotField = new FieldReference(v1Name, 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    Expression cond = new EqualExpression(thisDotField, new NullLiteral(0, 0), OperatorIds.EQUAL_EQUAL);
    thisDotField = new FieldReference(v1Name, 0L);
    thisDotField.receiver = new ThisReference(0, 0);
    TypeReference v1Type = new QualifiedTypeReference(JAVA_UTIL_ARRAYLIST, NULL_POSS);
    v1Type = addTypeArgs(1, false, builderType, v1Type, data.getTypeArgs());
    AllocationExpression constructArrayList = new AllocationExpression();
    constructArrayList.type = v1Type;
    Assignment initV1 = new Assignment(thisDotField, constructArrayList, 0);
    Statement thenPart;
    if (mapMode) {
        thisDotField = new FieldReference(v2Name, 0L);
        thisDotField.receiver = new ThisReference(0, 0);
        TypeReference v2Type = new QualifiedTypeReference(JAVA_UTIL_ARRAYLIST, NULL_POSS);
        List<TypeReference> tArgs = data.getTypeArgs();
        if (tArgs != null && tArgs.size() > 1)
            tArgs = Collections.singletonList(tArgs.get(1));
        else
            tArgs = Collections.emptyList();
        v2Type = addTypeArgs(1, false, builderType, v2Type, tArgs);
        constructArrayList = new AllocationExpression();
        constructArrayList.type = v2Type;
        Assignment initV2 = new Assignment(thisDotField, constructArrayList, 0);
        Block b = new Block(0);
        b.statements = new Statement[] { initV1, initV2 };
        thenPart = b;
    } else {
        thenPart = initV1;
    }
    return new IfStatement(cond, thenPart, 0, 0);
}

Example 14 with NullLiteral

use of org.eclipse.jdt.internal.compiler.ast.NullLiteral in project lombok by rzwitserloot.

the class HandleEqualsAndHashCode method createHashCode.

public MethodDeclaration createHashCode(EclipseNode type, Collection<EclipseNode> fields, boolean callSuper, ASTNode source, FieldAccess fieldAccess) {
    int pS = source.sourceStart, pE = source.sourceEnd;
    long p = (long) pS << 32 | pE;
    MethodDeclaration method = new MethodDeclaration(((CompilationUnitDeclaration) type.top().get()).compilationResult);
    setGeneratedBy(method, source);
    method.modifiers = toEclipseModifier(AccessLevel.PUBLIC);
    method.returnType = TypeReference.baseTypeReference(TypeIds.T_int, 0);
    setGeneratedBy(method.returnType, source);
    method.annotations = new Annotation[] { makeMarkerAnnotation(TypeConstants.JAVA_LANG_OVERRIDE, source) };
    method.selector = "hashCode".toCharArray();
    method.thrownExceptions = null;
    method.typeParameters = null;
    method.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
    method.bodyStart = method.declarationSourceStart = method.sourceStart = source.sourceStart;
    method.bodyEnd = method.declarationSourceEnd = method.sourceEnd = source.sourceEnd;
    method.arguments = null;
    List<Statement> statements = new ArrayList<Statement>();
    final boolean isEmpty = fields.isEmpty();
    /* final int PRIME = X; */
    {
        /* Without fields, PRIME isn't used, and that would trigger a 'local variable not used' warning. */
        if (!isEmpty) {
            LocalDeclaration primeDecl = new LocalDeclaration(PRIME, pS, pE);
            setGeneratedBy(primeDecl, source);
            primeDecl.modifiers |= Modifier.FINAL;
            primeDecl.type = TypeReference.baseTypeReference(TypeIds.T_int, 0);
            primeDecl.type.sourceStart = pS;
            primeDecl.type.sourceEnd = pE;
            setGeneratedBy(primeDecl.type, source);
            primeDecl.initialization = makeIntLiteral(String.valueOf(HandlerUtil.primeForHashcode()).toCharArray(), source);
            statements.add(primeDecl);
        }
    }
    /*int result = ... */
    {
        LocalDeclaration resultDecl = new LocalDeclaration(RESULT, pS, pE);
        setGeneratedBy(resultDecl, source);
        final Expression init;
        if (callSuper) {
            /* ... super.hashCode(); */
            MessageSend callToSuper = new MessageSend();
            setGeneratedBy(callToSuper, source);
            callToSuper.sourceStart = pS;
            callToSuper.sourceEnd = pE;
            callToSuper.receiver = new SuperReference(pS, pE);
            setGeneratedBy(callToSuper.receiver, source);
            callToSuper.selector = "hashCode".toCharArray();
            init = callToSuper;
        } else {
            /* ... 1; */
            init = makeIntLiteral("1".toCharArray(), source);
        }
        resultDecl.initialization = init;
        resultDecl.type = TypeReference.baseTypeReference(TypeIds.T_int, 0);
        resultDecl.type.sourceStart = pS;
        resultDecl.type.sourceEnd = pE;
        setGeneratedBy(resultDecl.type, source);
        statements.add(resultDecl);
    }
    for (EclipseNode field : fields) {
        TypeReference fType = getFieldType(field, fieldAccess);
        char[] dollarFieldName = ("$" + field.getName()).toCharArray();
        char[] token = fType.getLastToken();
        Expression fieldAccessor = createFieldAccessor(field, fieldAccess, source);
        if (fType.dimensions() == 0 && token != null) {
            if (Arrays.equals(TypeConstants.BOOLEAN, token)) {
                /* booleanField ? X : Y */
                IntLiteral intTrue = makeIntLiteral(String.valueOf(HandlerUtil.primeForTrue()).toCharArray(), source);
                IntLiteral intFalse = makeIntLiteral(String.valueOf(HandlerUtil.primeForFalse()).toCharArray(), source);
                ConditionalExpression intForBool = new ConditionalExpression(fieldAccessor, intTrue, intFalse);
                setGeneratedBy(intForBool, source);
                statements.add(createResultCalculation(source, intForBool));
            } else if (Arrays.equals(TypeConstants.LONG, token)) {
                statements.add(createLocalDeclaration(source, dollarFieldName, TypeReference.baseTypeReference(TypeIds.T_long, 0), fieldAccessor));
                SingleNameReference copy1 = new SingleNameReference(dollarFieldName, p);
                setGeneratedBy(copy1, source);
                SingleNameReference copy2 = new SingleNameReference(dollarFieldName, p);
                setGeneratedBy(copy2, source);
                statements.add(createResultCalculation(source, longToIntForHashCode(copy1, copy2, source)));
            } else if (Arrays.equals(TypeConstants.FLOAT, token)) {
                /* Float.floatToIntBits(fieldName) */
                MessageSend floatToIntBits = new MessageSend();
                floatToIntBits.sourceStart = pS;
                floatToIntBits.sourceEnd = pE;
                setGeneratedBy(floatToIntBits, source);
                floatToIntBits.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA_LANG_FLOAT);
                floatToIntBits.selector = "floatToIntBits".toCharArray();
                floatToIntBits.arguments = new Expression[] { fieldAccessor };
                statements.add(createResultCalculation(source, floatToIntBits));
            } else if (Arrays.equals(TypeConstants.DOUBLE, token)) {
                /* longToIntForHashCode(Double.doubleToLongBits(fieldName)) */
                MessageSend doubleToLongBits = new MessageSend();
                doubleToLongBits.sourceStart = pS;
                doubleToLongBits.sourceEnd = pE;
                setGeneratedBy(doubleToLongBits, source);
                doubleToLongBits.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA_LANG_DOUBLE);
                doubleToLongBits.selector = "doubleToLongBits".toCharArray();
                doubleToLongBits.arguments = new Expression[] { fieldAccessor };
                statements.add(createLocalDeclaration(source, dollarFieldName, TypeReference.baseTypeReference(TypeIds.T_long, 0), doubleToLongBits));
                SingleNameReference copy1 = new SingleNameReference(dollarFieldName, p);
                setGeneratedBy(copy1, source);
                SingleNameReference copy2 = new SingleNameReference(dollarFieldName, p);
                setGeneratedBy(copy2, source);
                statements.add(createResultCalculation(source, longToIntForHashCode(copy1, copy2, source)));
            } else if (BUILT_IN_TYPES.contains(new String(token))) {
                statements.add(createResultCalculation(source, fieldAccessor));
            } else /* objects */
            {
                /* final java.lang.Object $fieldName = this.fieldName; */
                /* $fieldName == null ? NULL_PRIME : $fieldName.hashCode() */
                statements.add(createLocalDeclaration(source, dollarFieldName, generateQualifiedTypeRef(source, TypeConstants.JAVA_LANG_OBJECT), fieldAccessor));
                SingleNameReference copy1 = new SingleNameReference(dollarFieldName, p);
                setGeneratedBy(copy1, source);
                SingleNameReference copy2 = new SingleNameReference(dollarFieldName, p);
                setGeneratedBy(copy2, source);
                MessageSend hashCodeCall = new MessageSend();
                hashCodeCall.sourceStart = pS;
                hashCodeCall.sourceEnd = pE;
                setGeneratedBy(hashCodeCall, source);
                hashCodeCall.receiver = copy1;
                hashCodeCall.selector = "hashCode".toCharArray();
                NullLiteral nullLiteral = new NullLiteral(pS, pE);
                setGeneratedBy(nullLiteral, source);
                EqualExpression objIsNull = new EqualExpression(copy2, nullLiteral, OperatorIds.EQUAL_EQUAL);
                setGeneratedBy(objIsNull, source);
                IntLiteral intMagic = makeIntLiteral(String.valueOf(HandlerUtil.primeForNull()).toCharArray(), source);
                ConditionalExpression nullOrHashCode = new ConditionalExpression(objIsNull, intMagic, hashCodeCall);
                nullOrHashCode.sourceStart = pS;
                nullOrHashCode.sourceEnd = pE;
                setGeneratedBy(nullOrHashCode, source);
                statements.add(createResultCalculation(source, nullOrHashCode));
            }
        } else if (fType.dimensions() > 0 && token != null) {
            /* Arrays.deepHashCode(array)  //just hashCode for simple arrays */
            MessageSend arraysHashCodeCall = new MessageSend();
            arraysHashCodeCall.sourceStart = pS;
            arraysHashCodeCall.sourceEnd = pE;
            setGeneratedBy(arraysHashCodeCall, source);
            arraysHashCodeCall.receiver = generateQualifiedNameRef(source, TypeConstants.JAVA, TypeConstants.UTIL, "Arrays".toCharArray());
            if (fType.dimensions() > 1 || !BUILT_IN_TYPES.contains(new String(token))) {
                arraysHashCodeCall.selector = "deepHashCode".toCharArray();
            } else {
                arraysHashCodeCall.selector = "hashCode".toCharArray();
            }
            arraysHashCodeCall.arguments = new Expression[] { fieldAccessor };
            statements.add(createResultCalculation(source, arraysHashCodeCall));
        }
    }
    /* return result; */
    {
        SingleNameReference resultRef = new SingleNameReference(RESULT, p);
        setGeneratedBy(resultRef, source);
        ReturnStatement returnStatement = new ReturnStatement(resultRef, pS, pE);
        setGeneratedBy(returnStatement, source);
        statements.add(returnStatement);
    }
    method.statements = statements.toArray(new Statement[statements.size()]);
    return method;
}

Example 15 with NullLiteral

use of org.eclipse.jdt.internal.compiler.ast.NullLiteral in project lombok by rzwitserloot.

the class HandleVal method visitLocal.

@Override
public void visitLocal(EclipseNode localNode, LocalDeclaration local) {
    TypeReference type = local.type;
    boolean isVal = typeMatches(val.class, localNode, type);
    boolean isVar = typeMatches(var.class, localNode, type);
    if (!(isVal || isVar))
        return;
    if (isVal)
        handleFlagUsage(localNode, ConfigurationKeys.VAL_FLAG_USAGE, "val");
    if (isVar)
        handleFlagUsage(localNode, ConfigurationKeys.VAR_FLAG_USAGE, "var");
    boolean variableOfForEach = false;
    if (localNode.directUp().get() instanceof ForeachStatement) {
        ForeachStatement fs = (ForeachStatement) localNode.directUp().get();
        variableOfForEach = fs.elementVariable == local;
    }
    String annotation = isVal ? "val" : "var";
    if (local.initialization == null && !variableOfForEach) {
        localNode.addError("'" + annotation + "' on a local variable requires an initializer expression");
        return;
    }
    if (local.initialization instanceof ArrayInitializer) {
        localNode.addError("'" + annotation + "' is not compatible with array initializer expressions. Use the full form (new int[] { ... } instead of just { ... })");
        return;
    }
    ASTNode parentRaw = localNode.directUp().get();
    if (isVal && parentRaw instanceof ForStatement) {
        localNode.addError("'val' is not allowed in old-style for loops");
        return;
    }
    if (parentRaw instanceof ForStatement && ((ForStatement) parentRaw).initializations != null && ((ForStatement) parentRaw).initializations.length > 1) {
        localNode.addError("'var' is not allowed in old-style for loops if there is more than 1 initializer");
        return;
    }
    if (local.initialization != null && local.initialization.getClass().getName().equals("org.eclipse.jdt.internal.compiler.ast.LambdaExpression")) {
        localNode.addError("'" + annotation + "' is not allowed with lambda expressions.");
        return;
    }
    if (isVar && local.initialization instanceof NullLiteral) {
        localNode.addError("variable initializer is 'null'");
        return;
    }
}