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

Example 1 with TernaryExpression

use of org.codehaus.groovy.ast.expr.TernaryExpression in project groovy by apache.

the class BinaryExpressionTransformer method convertInOperatorToTernary.

private Expression convertInOperatorToTernary(final BinaryExpression bin, final Expression rightExpression, final Expression leftExpression) {
    MethodCallExpression call = new MethodCallExpression(rightExpression, "isCase", leftExpression);
    call.setMethodTarget((MethodNode) bin.getNodeMetaData(StaticTypesMarker.DIRECT_METHOD_CALL_TARGET));
    call.setSourcePosition(bin);
    call.copyNodeMetaData(bin);
    TernaryExpression tExp = new TernaryExpression(new BooleanExpression(new BinaryExpression(rightExpression, Token.newSymbol("==", -1, -1), new ConstantExpression(null))), new BinaryExpression(leftExpression, Token.newSymbol("==", -1, -1), new ConstantExpression(null)), call);
    return staticCompilationTransformer.transform(tExp);
}

Example 2 with TernaryExpression

use of org.codehaus.groovy.ast.expr.TernaryExpression in project groovy by apache.

the class BinaryExpressionHelper method evaluateNormalTernary.

private void evaluateNormalTernary(TernaryExpression expression) {
    MethodVisitor mv = controller.getMethodVisitor();
    OperandStack operandStack = controller.getOperandStack();
    TypeChooser typeChooser = controller.getTypeChooser();
    Expression boolPart = expression.getBooleanExpression();
    Expression truePart = expression.getTrueExpression();
    Expression falsePart = expression.getFalseExpression();
    ClassNode truePartType = typeChooser.resolveType(truePart, controller.getClassNode());
    ClassNode falsePartType = typeChooser.resolveType(falsePart, controller.getClassNode());
    ClassNode common = WideningCategories.lowestUpperBound(truePartType, falsePartType);
    // we compile b?x:y as 
    //      boolean(b)?S(x):S(y), S = common super type of x,y
    // so we load b, do boolean conversion. 
    // In the true part load x and cast it to S, 
    // in the false part load y and cast y to S 
    // load b and convert to boolean
    int mark = operandStack.getStackLength();
    boolPart.visit(controller.getAcg());
    operandStack.castToBool(mark, true);
    Label l0 = operandStack.jump(IFEQ);
    // true part: load x and cast to S
    truePart.visit(controller.getAcg());
    operandStack.doGroovyCast(common);
    Label l1 = new Label();
    mv.visitJumpInsn(GOTO, l1);
    // false part: load y and cast to S
    mv.visitLabel(l0);
    falsePart.visit(controller.getAcg());
    operandStack.doGroovyCast(common);
    // finish and cleanup
    mv.visitLabel(l1);
    controller.getOperandStack().replace(common, 2);
}

Example 3 with TernaryExpression

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

the class BinaryExpressionHelper method evaluateNormalTernary.

private void evaluateNormalTernary(TernaryExpression expression) {
    MethodVisitor mv = controller.getMethodVisitor();
    OperandStack operandStack = controller.getOperandStack();
    TypeChooser typeChooser = controller.getTypeChooser();
    Expression boolPart = expression.getBooleanExpression();
    Expression truePart = expression.getTrueExpression();
    Expression falsePart = expression.getFalseExpression();
    ClassNode truePartType = typeChooser.resolveType(truePart, controller.getClassNode());
    ClassNode falsePartType = typeChooser.resolveType(falsePart, controller.getClassNode());
    ClassNode common = WideningCategories.lowestUpperBound(truePartType, falsePartType);
    // we compile b?x:y as 
    //      boolean(b)?S(x):S(y), S = common super type of x,y
    // so we load b, do boolean conversion. 
    // In the true part load x and cast it to S, 
    // in the false part load y and cast y to S 
    // load b and convert to boolean
    int mark = operandStack.getStackLength();
    boolPart.visit(controller.getAcg());
    operandStack.castToBool(mark, true);
    Label l0 = operandStack.jump(IFEQ);
    // true part: load x and cast to S
    truePart.visit(controller.getAcg());
    operandStack.doGroovyCast(common);
    Label l1 = new Label();
    mv.visitJumpInsn(GOTO, l1);
    // false part: load y and cast to S
    mv.visitLabel(l0);
    falsePart.visit(controller.getAcg());
    operandStack.doGroovyCast(common);
    // finish and cleanup
    mv.visitLabel(l1);
    controller.getOperandStack().replace(common, 2);
}

Example 4 with TernaryExpression

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

the class BinaryExpressionTransformer method convertInOperatorToTernary.

private Expression convertInOperatorToTernary(final BinaryExpression bin, final Expression rightExpression, final Expression leftExpression) {
    MethodCallExpression call = new MethodCallExpression(rightExpression, "isCase", leftExpression);
    call.setMethodTarget((MethodNode) bin.getNodeMetaData(StaticTypesMarker.DIRECT_METHOD_CALL_TARGET));
    call.setSourcePosition(bin);
    call.copyNodeMetaData(bin);
    TernaryExpression tExp = new TernaryExpression(new BooleanExpression(new BinaryExpression(rightExpression, Token.newSymbol("==", -1, -1), new ConstantExpression(null))), new BinaryExpression(leftExpression, Token.newSymbol("==", -1, -1), new ConstantExpression(null)), call);
    return staticCompilationTransformer.transform(tExp);
}

Example 5 with TernaryExpression

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

the class ControllerActionTransformer method initializePrimitiveOrTypeWrapperParameter.

protected void initializePrimitiveOrTypeWrapperParameter(final ClassNode classNode, final BlockStatement wrapper, final Parameter param, final String requestParameterName) {
    final ClassNode paramTypeClassNode = param.getType();
    final String methodParamName = param.getName();
    final Expression defaultValueExpression;
    if (paramTypeClassNode.equals(ClassHelper.Boolean_TYPE)) {
        defaultValueExpression = new ConstantExpression(false);
    } else if (PRIMITIVE_CLASS_NODES.contains(paramTypeClassNode)) {
        defaultValueExpression = new ConstantExpression(0);
    } else {
        defaultValueExpression = new ConstantExpression(null);
    }
    final ConstantExpression paramConstantExpression = new ConstantExpression(requestParameterName);
    final Expression paramsTypeConversionMethodArguments = new ArgumentListExpression(paramConstantExpression, /*, defaultValueExpression*/
    new ConstantExpression(null));
    final String conversionMethodName;
    if (TYPE_WRAPPER_CLASS_TO_CONVERSION_METHOD_NAME.containsKey(paramTypeClassNode)) {
        conversionMethodName = TYPE_WRAPPER_CLASS_TO_CONVERSION_METHOD_NAME.get(paramTypeClassNode);
    } else {
        conversionMethodName = paramTypeClassNode.getName();
    }
    Expression getParamsExpression = buildGetPropertyExpression(new VariableExpression("this"), "params", classNode);
    final MethodCallExpression retrieveConvertedValueExpression = new MethodCallExpression(getParamsExpression, conversionMethodName, paramsTypeConversionMethodArguments);
    // choose any
    Class<?> defaultValueClass = null;
    if ("char".equals(conversionMethodName)) {
        // TypeConvertingMap.'char' method has 2 different signatures, choose the one with "Character 'char'(String name, Integer defaultValue)" signature
        defaultValueClass = Integer.class;
    }
    applyMethodTarget(retrieveConvertedValueExpression, TypeConvertingMap.class, null, defaultValueClass);
    final Expression paramsContainsKeyMethodArguments = new ArgumentListExpression(paramConstantExpression);
    final BooleanExpression containsKeyExpression = new BooleanExpression(applyDefaultMethodTarget(new MethodCallExpression(getParamsExpression, "containsKey", paramsContainsKeyMethodArguments), Map.class));
    final Token equalsToken = Token.newSymbol(Types.EQUALS, 0, 0);
    final VariableExpression convertedValueExpression = new VariableExpression("___converted_" + methodParamName, new ClassNode(Object.class));
    final DeclarationExpression declareConvertedValueExpression = new DeclarationExpression(convertedValueExpression, equalsToken, new EmptyExpression());
    Statement declareVariableStatement = new ExpressionStatement(declareConvertedValueExpression);
    wrapper.addStatement(declareVariableStatement);
    final VariableExpression methodParamExpression = new VariableExpression(methodParamName, paramTypeClassNode);
    final DeclarationExpression declareParameterVariableStatement = new DeclarationExpression(methodParamExpression, equalsToken, new EmptyExpression());
    declareVariableStatement = new ExpressionStatement(declareParameterVariableStatement);
    wrapper.addStatement(declareVariableStatement);
    final Expression assignmentExpression = new BinaryExpression(convertedValueExpression, equalsToken, new TernaryExpression(containsKeyExpression, retrieveConvertedValueExpression, defaultValueExpression));
    wrapper.addStatement(new ExpressionStatement(assignmentExpression));
    Expression rejectValueMethodCallExpression = getRejectValueExpression(classNode, methodParamName);
    BlockStatement ifConvertedValueIsNullBlockStatement = new BlockStatement();
    ifConvertedValueIsNullBlockStatement.addStatement(new ExpressionStatement(rejectValueMethodCallExpression));
    ifConvertedValueIsNullBlockStatement.addStatement(new ExpressionStatement(new BinaryExpression(methodParamExpression, equalsToken, defaultValueExpression)));
    final BooleanExpression isConvertedValueNullExpression = new BooleanExpression(new BinaryExpression(convertedValueExpression, Token.newSymbol(Types.COMPARE_EQUAL, 0, 0), new ConstantExpression(null)));
    final ExpressionStatement assignConvertedValueToParamStatement = new ExpressionStatement(new BinaryExpression(methodParamExpression, equalsToken, convertedValueExpression));
    final Statement ifStatement = new IfStatement(isConvertedValueNullExpression, ifConvertedValueIsNullBlockStatement, assignConvertedValueToParamStatement);
    wrapper.addStatement(new IfStatement(new BooleanExpression(containsKeyExpression), ifStatement, new ExpressionStatement(new EmptyExpression())));
}