Examples with BooleanExpression org.codehaus.groovy.ast.expr.BooleanExpression used on opensource projects

Example 16 with BooleanExpression

use of org.codehaus.groovy.ast.expr.BooleanExpression in project grails-core by grails.

the class ControllerActionTransformer method initializeStringParameter.

protected void initializeStringParameter(final ClassNode classNode, final BlockStatement wrapper, final Parameter param, final String requestParameterName) {
    final ClassNode paramTypeClassNode = param.getType();
    final String methodParamName = param.getName();
    Expression getParamsExpression = buildGetPropertyExpression(new VariableExpression("this"), "params", classNode);
    final Expression paramsContainsKeyMethodArguments = new ArgumentListExpression(new ConstantExpression(requestParameterName));
    final BooleanExpression containsKeyExpression = new BooleanExpression(applyDefaultMethodTarget(new MethodCallExpression(getParamsExpression, "containsKey", paramsContainsKeyMethodArguments), Map.class));
    final Statement initializeParameterStatement = new ExpressionStatement(new DeclarationExpression(new VariableExpression(methodParamName, paramTypeClassNode), Token.newSymbol(Types.EQUALS, 0, 0), new TernaryExpression(containsKeyExpression, buildGetMapExpression(getParamsExpression, requestParameterName), new ConstantExpression(null))));
    wrapper.addStatement(initializeParameterStatement);
}

Example 17 with BooleanExpression

use of org.codehaus.groovy.ast.expr.BooleanExpression in project groovy-core by groovy.

the class IfElseTest method testLoop.

public void testLoop() throws Exception {
    ClassNode classNode = new ClassNode("Foo", ACC_PUBLIC, ClassHelper.OBJECT_TYPE);
    classNode.addConstructor(new ConstructorNode(ACC_PUBLIC, null));
    classNode.addProperty(new PropertyNode("bar", ACC_PUBLIC, ClassHelper.STRING_TYPE, classNode, null, null, null));
    classNode.addProperty(new PropertyNode("result", ACC_PUBLIC, ClassHelper.STRING_TYPE, classNode, null, null, null));
    BooleanExpression expression = new BooleanExpression(new BinaryExpression(new FieldExpression(new FieldNode("bar", ACC_PRIVATE, ClassHelper.STRING_TYPE, classNode, ConstantExpression.NULL)), Token.newSymbol("==", 0, 0), new ConstantExpression("abc")));
    Statement trueStatement = new ExpressionStatement(new BinaryExpression(new FieldExpression(new FieldNode("result", ACC_PRIVATE, ClassHelper.STRING_TYPE, classNode, ConstantExpression.NULL)), Token.newSymbol("=", 0, 0), new ConstantExpression("worked")));
    Statement falseStatement = createPrintlnStatement(new ConstantExpression("false"));
    IfStatement statement = new IfStatement(expression, trueStatement, falseStatement);
    classNode.addMethod(new MethodNode("ifDemo", ACC_PUBLIC, ClassHelper.VOID_TYPE, Parameter.EMPTY_ARRAY, ClassNode.EMPTY_ARRAY, statement));
    Class fooClass = loadClass(classNode);
    assertTrue("Loaded a new class", fooClass != null);
    Object bean = fooClass.newInstance();
    assertTrue("Managed to create bean", bean != null);
    assertSetProperty(bean, "bar", "abc");
    System.out.println("################ Now about to invoke method");
    Object[] array = {};
    InvokerHelper.invokeMethod(bean, "ifDemo", array);
    System.out.println("################ Done");
    assertGetProperty(bean, "result", "worked");
}

Example 18 with BooleanExpression

use of org.codehaus.groovy.ast.expr.BooleanExpression in project groovy-core by groovy.

the class BinaryExpressionTransformer method transformBinaryExpression.

Expression transformBinaryExpression(final BinaryExpression bin) {
    if (bin instanceof DeclarationExpression) {
        Expression optimized = transformDeclarationExpression(bin);
        if (optimized != null) {
            return optimized;
        }
    }
    Object[] list = bin.getNodeMetaData(BINARY_EXP_TARGET);
    Token operation = bin.getOperation();
    int operationType = operation.getType();
    Expression rightExpression = bin.getRightExpression();
    Expression leftExpression = bin.getLeftExpression();
    if (bin instanceof DeclarationExpression && leftExpression instanceof VariableExpression) {
        ClassNode declarationType = ((VariableExpression) leftExpression).getOriginType();
        if (rightExpression instanceof ConstantExpression) {
            ClassNode unwrapper = ClassHelper.getUnwrapper(declarationType);
            ClassNode wrapper = ClassHelper.getWrapper(declarationType);
            if (!rightExpression.getType().equals(declarationType) && wrapper.isDerivedFrom(ClassHelper.Number_TYPE) && WideningCategories.isDoubleCategory(unwrapper)) {
                ConstantExpression constant = (ConstantExpression) rightExpression;
                if (constant.getValue() != null) {
                    return optimizeConstantInitialization(bin, operation, constant, leftExpression, declarationType);
                }
            }
        }
    }
    if (operationType == Types.EQUAL && leftExpression instanceof PropertyExpression) {
        MethodNode directMCT = leftExpression.getNodeMetaData(StaticTypesMarker.DIRECT_METHOD_CALL_TARGET);
        if (directMCT != null) {
            return transformPropertyAssignmentToSetterCall((PropertyExpression) leftExpression, rightExpression, directMCT);
        }
    }
    if (operationType == Types.COMPARE_EQUAL || operationType == Types.COMPARE_NOT_EQUAL) {
        // let's check if one of the operands is the null constant
        CompareToNullExpression compareToNullExpression = null;
        if (isNullConstant(leftExpression)) {
            compareToNullExpression = new CompareToNullExpression(staticCompilationTransformer.transform(rightExpression), operationType == Types.COMPARE_EQUAL);
        } else if (isNullConstant(rightExpression)) {
            compareToNullExpression = new CompareToNullExpression(staticCompilationTransformer.transform(leftExpression), operationType == Types.COMPARE_EQUAL);
        }
        if (compareToNullExpression != null) {
            compareToNullExpression.setSourcePosition(bin);
            return compareToNullExpression;
        }
    } else if (operationType == Types.KEYWORD_IN) {
        return convertInOperatorToTernary(bin, rightExpression, leftExpression);
    }
    if (list != null) {
        if (operationType == Types.COMPARE_TO) {
            StaticTypesTypeChooser typeChooser = staticCompilationTransformer.getTypeChooser();
            ClassNode classNode = staticCompilationTransformer.getClassNode();
            ClassNode leftType = typeChooser.resolveType(leftExpression, classNode);
            if (leftType.implementsInterface(ClassHelper.COMPARABLE_TYPE)) {
                ClassNode rightType = typeChooser.resolveType(rightExpression, classNode);
                if (rightType.implementsInterface(ClassHelper.COMPARABLE_TYPE)) {
                    Expression left = staticCompilationTransformer.transform(leftExpression);
                    Expression right = staticCompilationTransformer.transform(rightExpression);
                    MethodCallExpression call = new MethodCallExpression(left, "compareTo", new ArgumentListExpression(right));
                    call.setImplicitThis(false);
                    call.setMethodTarget(COMPARE_TO_METHOD);
                    CompareIdentityExpression compareIdentity = new CompareIdentityExpression(left, right);
                    compareIdentity.putNodeMetaData(StaticTypesMarker.INFERRED_RETURN_TYPE, ClassHelper.boolean_TYPE);
                    TernaryExpression result = new TernaryExpression(// a==b
                    new BooleanExpression(compareIdentity), CONSTANT_ZERO, new TernaryExpression(// a==null
                    new BooleanExpression(new CompareToNullExpression(left, true)), CONSTANT_MINUS_ONE, new TernaryExpression(// b==null
                    new BooleanExpression(new CompareToNullExpression(right, true)), CONSTANT_ONE, call)));
                    compareIdentity.putNodeMetaData(StaticTypesMarker.INFERRED_RETURN_TYPE, ClassHelper.int_TYPE);
                    result.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, ClassHelper.int_TYPE);
                    TernaryExpression expr = (TernaryExpression) result.getFalseExpression();
                    expr.putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, ClassHelper.int_TYPE);
                    expr.getFalseExpression().putNodeMetaData(StaticTypesMarker.INFERRED_TYPE, ClassHelper.int_TYPE);
                    return result;
                }
            }
        }
        boolean isAssignment = StaticTypeCheckingSupport.isAssignment(operationType);
        MethodCallExpression call;
        MethodNode node = (MethodNode) list[0];
        String name = (String) list[1];
        Expression left = staticCompilationTransformer.transform(leftExpression);
        Expression right = staticCompilationTransformer.transform(rightExpression);
        BinaryExpression optimized = tryOptimizeCharComparison(left, right, bin);
        if (optimized != null) {
            optimized.removeNodeMetaData(BINARY_EXP_TARGET);
            return transformBinaryExpression(optimized);
        }
        call = new MethodCallExpression(left, name, new ArgumentListExpression(right));
        call.setImplicitThis(false);
        call.setMethodTarget(node);
        MethodNode adapter = StaticCompilationTransformer.BYTECODE_BINARY_ADAPTERS.get(operationType);
        if (adapter != null) {
            ClassExpression sba = new ClassExpression(StaticCompilationTransformer.BYTECODE_ADAPTER_CLASS);
            // replace with compareEquals
            call = new MethodCallExpression(sba, "compareEquals", new ArgumentListExpression(left, right));
            call.setMethodTarget(adapter);
            call.setImplicitThis(false);
        }
        if (!isAssignment)
            return call;
        // the method represents the operation type only, and we must add an assignment
        return new BinaryExpression(left, Token.newSymbol("=", operation.getStartLine(), operation.getStartColumn()), call);
    }
    if (bin.getOperation().getType() == Types.EQUAL && leftExpression instanceof TupleExpression && rightExpression instanceof ListExpression) {
        // multiple assignment
        ListOfExpressionsExpression cle = new ListOfExpressionsExpression();
        boolean isDeclaration = bin instanceof DeclarationExpression;
        List<Expression> leftExpressions = ((TupleExpression) leftExpression).getExpressions();
        List<Expression> rightExpressions = ((ListExpression) rightExpression).getExpressions();
        Iterator<Expression> leftIt = leftExpressions.iterator();
        Iterator<Expression> rightIt = rightExpressions.iterator();
        if (isDeclaration) {
            while (leftIt.hasNext()) {
                Expression left = leftIt.next();
                if (rightIt.hasNext()) {
                    Expression right = rightIt.next();
                    BinaryExpression bexp = new DeclarationExpression(left, bin.getOperation(), right);
                    bexp.setSourcePosition(right);
                    cle.addExpression(bexp);
                }
            }
        } else {
            // (next, result) = [ result, next+result ]
            // -->
            // def tmp1 = result
            // def tmp2 = next+result
            // next = tmp1
            // result = tmp2
            int size = rightExpressions.size();
            List<Expression> tmpAssignments = new ArrayList<Expression>(size);
            List<Expression> finalAssignments = new ArrayList<Expression>(size);
            for (int i = 0; i < Math.min(size, leftExpressions.size()); i++) {
                Expression left = leftIt.next();
                Expression right = rightIt.next();
                VariableExpression tmpVar = new VariableExpression("$tmpVar$" + tmpVarCounter++);
                BinaryExpression bexp = new DeclarationExpression(tmpVar, bin.getOperation(), right);
                bexp.setSourcePosition(right);
                tmpAssignments.add(bexp);
                bexp = new BinaryExpression(left, bin.getOperation(), new VariableExpression(tmpVar));
                bexp.setSourcePosition(left);
                finalAssignments.add(bexp);
            }
            for (Expression tmpAssignment : tmpAssignments) {
                cle.addExpression(tmpAssignment);
            }
            for (Expression finalAssignment : finalAssignments) {
                cle.addExpression(finalAssignment);
            }
        }
        return staticCompilationTransformer.transform(cle);
    }
    return staticCompilationTransformer.superTransform(bin);
}

Example 19 with BooleanExpression

use of org.codehaus.groovy.ast.expr.BooleanExpression in project groovy-core by groovy.

the class TraitComposer method createSuperFallback.

private static Statement createSuperFallback(MethodNode forwarderMethod, ClassNode returnType) {
    ArgumentListExpression args = new ArgumentListExpression();
    Parameter[] forwarderMethodParameters = forwarderMethod.getParameters();
    for (final Parameter forwarderMethodParameter : forwarderMethodParameters) {
        args.addExpression(new VariableExpression(forwarderMethodParameter));
    }
    BinaryExpression instanceOfExpr = new BinaryExpression(new VariableExpression("this"), Token.newSymbol(Types.KEYWORD_INSTANCEOF, -1, -1), new ClassExpression(Traits.GENERATED_PROXY_CLASSNODE));
    MethodCallExpression superCall = new MethodCallExpression(new VariableExpression("super"), forwarderMethod.getName(), args);
    superCall.setImplicitThis(false);
    CastExpression proxyReceiver = new CastExpression(Traits.GENERATED_PROXY_CLASSNODE, new VariableExpression("this"));
    MethodCallExpression getProxy = new MethodCallExpression(proxyReceiver, "getProxyTarget", ArgumentListExpression.EMPTY_ARGUMENTS);
    getProxy.setImplicitThis(true);
    StaticMethodCallExpression proxyCall = new StaticMethodCallExpression(ClassHelper.make(InvokerHelper.class), "invokeMethod", new ArgumentListExpression(getProxy, new ConstantExpression(forwarderMethod.getName()), new ArrayExpression(ClassHelper.OBJECT_TYPE, args.getExpressions())));
    IfStatement stmt = new IfStatement(new BooleanExpression(instanceOfExpr), new ExpressionStatement(new CastExpression(returnType, proxyCall)), new ExpressionStatement(superCall));
    return stmt;
}

Example 20 with BooleanExpression

use of org.codehaus.groovy.ast.expr.BooleanExpression in project gcontracts by andresteingress.

the class PreconditionGenerator method generatePreconditionAssertionStatement.

/**
     * Injects a precondition assertion statement in the given <tt>method</tt>, based on the given <tt>annotation</tt> of
     * type {@link org.gcontracts.annotations.Requires}.
     *
     * @param method the {@link org.codehaus.groovy.ast.MethodNode} for assertion injection
     * @param precondition the {@link org.gcontracts.domain.Precondition} the assertion statement should be generated from
     */
public void generatePreconditionAssertionStatement(final MethodNode method, final org.gcontracts.domain.Precondition precondition) {
    final BooleanExpression preconditionBooleanExpression = addCallsToSuperMethodNodeAnnotationClosure(method.getDeclaringClass(), method, Precondition.class, precondition.booleanExpression(), false);
    BlockStatement blockStatement;
    final BlockStatement originalBlockStatement = precondition.originalBlockStatement();
    // if use execution tracker flag is found in the meta-data the annotation closure visitor discovered
    // method calls which might be subject to cycling boolean expressions -> no inline mode possible
    final boolean useExecutionTracker = originalBlockStatement == null || Boolean.TRUE.equals(originalBlockStatement.getNodeMetaData(AnnotationClosureVisitor.META_DATA_USE_EXECUTION_TRACKER));
    if (!useExecutionTracker && Boolean.TRUE.equals(method.getNodeMetaData(META_DATA_USE_INLINE_MODE))) {
        blockStatement = getInlineModeBlockStatement(precondition.originalBlockStatement());
    } else {
        blockStatement = wrapAssertionBooleanExpression(method.getDeclaringClass(), method, preconditionBooleanExpression, "precondition");
    }
    addPrecondition(method, blockStatement);
}