Examples with ASTVariableDeclaratorId net.sourceforge.pmd.lang.java.ast.ASTVariableDeclaratorId used on opensource projects

Example 11 with ASTVariableDeclaratorId

use of net.sourceforge.pmd.lang.java.ast.ASTVariableDeclaratorId in project pmd by pmd.

the class DoubleCheckedLockingRule method checkLocalVariableUsage.

private boolean checkLocalVariableUsage(ASTMethodDeclaration node, String returnVariableName) {
    List<ASTLocalVariableDeclaration> locals = node.findDescendantsOfType(ASTLocalVariableDeclaration.class);
    ASTVariableInitializer initializer = null;
    for (ASTLocalVariableDeclaration l : locals) {
        ASTVariableDeclaratorId id = l.getFirstDescendantOfType(ASTVariableDeclaratorId.class);
        if (id != null && id.hasImageEqualTo(returnVariableName)) {
            initializer = l.getFirstDescendantOfType(ASTVariableInitializer.class);
            break;
        }
    }
    // the return variable name doesn't seem to be a local variable
    if (initializer == null) {
        return false;
    }
    // verify the value with which the local variable is initialized
    if (initializer.jjtGetNumChildren() > 0 && initializer.jjtGetChild(0) instanceof ASTExpression && initializer.jjtGetChild(0).jjtGetNumChildren() > 0 && initializer.jjtGetChild(0).jjtGetChild(0) instanceof ASTPrimaryExpression && initializer.jjtGetChild(0).jjtGetChild(0).jjtGetNumChildren() > 0 && initializer.jjtGetChild(0).jjtGetChild(0).jjtGetChild(0) instanceof ASTPrimaryPrefix && initializer.jjtGetChild(0).jjtGetChild(0).jjtGetChild(0).jjtGetNumChildren() > 0 && initializer.jjtGetChild(0).jjtGetChild(0).jjtGetChild(0).jjtGetChild(0) instanceof ASTName) {
        ASTName name = (ASTName) initializer.jjtGetChild(0).jjtGetChild(0).jjtGetChild(0).jjtGetChild(0);
        if (name == null || !volatileFields.contains(name.getImage())) {
            return false;
        }
    } else {
        // not a simple assignment
        return false;
    }
    // now check every usage/assignment of the variable
    List<ASTName> names = node.findDescendantsOfType(ASTName.class);
    for (ASTName n : names) {
        if (!n.hasImageEqualTo(returnVariableName)) {
            continue;
        }
        Node expression = n.getNthParent(3);
        if (expression instanceof ASTEqualityExpression) {
            continue;
        }
        if (expression instanceof ASTStatementExpression) {
            if (expression.jjtGetNumChildren() > 2 && expression.jjtGetChild(1) instanceof ASTAssignmentOperator) {
                ASTName value = expression.jjtGetChild(2).getFirstDescendantOfType(ASTName.class);
                if (value == null || !volatileFields.contains(value.getImage())) {
                    return false;
                }
            }
        }
    }
    return true;
}

Example 12 with ASTVariableDeclaratorId

use of net.sourceforge.pmd.lang.java.ast.ASTVariableDeclaratorId in project pmd by pmd.

the class ClassScope method createBuiltInMethodDeclaration.

/**
 * Creates a fake method name declaration for built-in methods from Java
 * like the Enum Method "valueOf".
 *
 * @param methodName
 *            the method name
 * @param parameterTypes
 *            the reference types of each parameter of the method
 * @return a method name declaration
 */
private MethodNameDeclaration createBuiltInMethodDeclaration(final String methodName, final String... parameterTypes) {
    ASTMethodDeclaration methodDeclaration = new ASTMethodDeclaration(JavaParserTreeConstants.JJTMETHODDECLARATION);
    methodDeclaration.setPublic(true);
    methodDeclaration.setScope(this);
    ASTMethodDeclarator methodDeclarator = new ASTMethodDeclarator(JavaParserTreeConstants.JJTMETHODDECLARATOR);
    methodDeclarator.setImage(methodName);
    methodDeclarator.setScope(this);
    ASTFormalParameters formalParameters = new ASTFormalParameters(JavaParserTreeConstants.JJTFORMALPARAMETERS);
    formalParameters.setScope(this);
    methodDeclaration.jjtAddChild(methodDeclarator, 0);
    methodDeclarator.jjtSetParent(methodDeclaration);
    methodDeclarator.jjtAddChild(formalParameters, 0);
    formalParameters.jjtSetParent(methodDeclarator);
    /*
         * jjtAddChild resizes it's child node list according to known indexes.
         * Going backwards makes sure the first time it gets the right size avoiding copies.
         */
    for (int i = parameterTypes.length - 1; i >= 0; i--) {
        ASTFormalParameter formalParameter = new ASTFormalParameter(JavaParserTreeConstants.JJTFORMALPARAMETER);
        formalParameters.jjtAddChild(formalParameter, i);
        formalParameter.jjtSetParent(formalParameters);
        ASTVariableDeclaratorId variableDeclaratorId = new ASTVariableDeclaratorId(JavaParserTreeConstants.JJTVARIABLEDECLARATORID);
        variableDeclaratorId.setImage("arg" + i);
        formalParameter.jjtAddChild(variableDeclaratorId, 1);
        variableDeclaratorId.jjtSetParent(formalParameter);
        ASTType type = new ASTType(JavaParserTreeConstants.JJTTYPE);
        formalParameter.jjtAddChild(type, 0);
        type.jjtSetParent(formalParameter);
        if (PRIMITIVE_TYPES.contains(parameterTypes[i])) {
            ASTPrimitiveType primitiveType = new ASTPrimitiveType(JavaParserTreeConstants.JJTPRIMITIVETYPE);
            primitiveType.setImage(parameterTypes[i]);
            type.jjtAddChild(primitiveType, 0);
            primitiveType.jjtSetParent(type);
        } else {
            ASTReferenceType referenceType = new ASTReferenceType(JavaParserTreeConstants.JJTREFERENCETYPE);
            type.jjtAddChild(referenceType, 0);
            referenceType.jjtSetParent(type);
            // TODO : this could actually be a primitive array...
            ASTClassOrInterfaceType classOrInterfaceType = new ASTClassOrInterfaceType(JavaParserTreeConstants.JJTCLASSORINTERFACETYPE);
            classOrInterfaceType.setImage(parameterTypes[i]);
            referenceType.jjtAddChild(classOrInterfaceType, 0);
            classOrInterfaceType.jjtSetParent(referenceType);
        }
    }
    return new MethodNameDeclaration(methodDeclarator);
}

Example 13 with ASTVariableDeclaratorId

use of net.sourceforge.pmd.lang.java.ast.ASTVariableDeclaratorId in project pmd by pmd.

the class VariableNameDeclaration method isArray.

public boolean isArray() {
    ASTVariableDeclaratorId astVariableDeclaratorId = (ASTVariableDeclaratorId) node;
    ASTType typeNode = astVariableDeclaratorId.getTypeNode();
    if (typeNode != null) {
        return ((Dimensionable) typeNode.jjtGetParent()).isArray();
    } else {
        return false;
    }
}

Example 14 with ASTVariableDeclaratorId

use of net.sourceforge.pmd.lang.java.ast.ASTVariableDeclaratorId in project pmd by pmd.

the class ForLoopCanBeForeachRule method indexStartsAtZero.

/* We only report loops with int initializers starting at zero. */
private boolean indexStartsAtZero(VariableNameDeclaration index) {
    ASTVariableDeclaratorId name = (ASTVariableDeclaratorId) index.getNode();
    ASTVariableDeclarator declarator = name.getFirstParentOfType(ASTVariableDeclarator.class);
    if (declarator == null) {
        return false;
    }
    try {
        List<Node> zeroLiteral = declarator.findChildNodesWithXPath("./VariableInitializer/Expression/PrimaryExpression/PrimaryPrefix/Literal[@Image='0' and " + "@StringLiteral='false']");
        if (!zeroLiteral.isEmpty()) {
            return true;
        }
    } catch (JaxenException je) {
        throw new RuntimeException(je);
    }
    return false;
}

Example 15 with ASTVariableDeclaratorId

use of net.sourceforge.pmd.lang.java.ast.ASTVariableDeclaratorId in project pmd by pmd.

the class ArrayIsStoredDirectlyRule method checkForDirectAssignment.

/**
 * Checks if the variable designed in parameter is written to a field (not
 * local variable) in the statements.
 */
private boolean checkForDirectAssignment(Object ctx, final ASTFormalParameter parameter, final List<ASTBlockStatement> bs) {
    final ASTVariableDeclaratorId vid = parameter.getFirstDescendantOfType(ASTVariableDeclaratorId.class);
    final String varName = vid.getImage();
    for (ASTBlockStatement b : bs) {
        if (b.hasDescendantOfType(ASTAssignmentOperator.class)) {
            final ASTStatementExpression se = b.getFirstDescendantOfType(ASTStatementExpression.class);
            if (se == null || !(se.jjtGetChild(0) instanceof ASTPrimaryExpression)) {
                continue;
            }
            String assignedVar = getExpressionVarName(se);
            if (assignedVar == null) {
                continue;
            }
            ASTPrimaryExpression pe = (ASTPrimaryExpression) se.jjtGetChild(0);
            Node n = pe.getFirstParentOfType(ASTMethodDeclaration.class);
            if (n == null) {
                n = pe.getFirstParentOfType(ASTConstructorDeclaration.class);
                if (n == null) {
                    continue;
                }
            }
            if (!isLocalVariable(assignedVar, n)) {
                // something
                if (se.jjtGetNumChildren() < 3) {
                    continue;
                }
                ASTExpression e = (ASTExpression) se.jjtGetChild(2);
                if (e.hasDescendantOfType(ASTEqualityExpression.class)) {
                    continue;
                }
                String val = getExpressionVarName(e);
                if (val == null) {
                    continue;
                }
                ASTPrimarySuffix foo = e.getFirstDescendantOfType(ASTPrimarySuffix.class);
                if (foo != null && foo.isArrayDereference()) {
                    continue;
                }
                if (val.equals(varName)) {
                    Node md = parameter.getFirstParentOfType(ASTMethodDeclaration.class);
                    if (md == null) {
                        md = pe.getFirstParentOfType(ASTConstructorDeclaration.class);
                    }
                    if (!isLocalVariable(varName, md)) {
                        addViolation(ctx, parameter, varName);
                    }
                }
            }
        }
    }
    return false;
}