Examples with ExpressionTree org.sonar.plugins.java.api.tree.ExpressionTree used on opensource projects

Example 56 with ExpressionTree

use of org.sonar.plugins.java.api.tree.ExpressionTree in project sonar-java by SonarSource.

the class NullDereferenceInConditionalCheck method visitBinaryExpression.

@Override
public void visitBinaryExpression(BinaryExpressionTree tree) {
    if (isAndWithNullComparison(tree) || isOrWithNullExclusion(tree)) {
        ExpressionTree nonNullOperand = getNonNullOperand(tree.leftOperand());
        IdentifierTree identifierTree = getIdentifier(nonNullOperand);
        if (identifierTree != null) {
            IdentifierVisitor visitor = new IdentifierVisitor(identifierTree);
            tree.rightOperand().accept(visitor);
            if (visitor.raiseIssue) {
                context.reportIssue(this, tree, "Either reverse the equality operator in the \"" + identifierTree.name() + "\" null test, or reverse the logical operator that follows it.");
            }
        }
    }
    super.visitBinaryExpression(tree);
}

Example 57 with ExpressionTree

use of org.sonar.plugins.java.api.tree.ExpressionTree in project sonar-java by SonarSource.

the class ModulusEqualityCheck method checkModulusAndIntLiteral.

private void checkModulusAndIntLiteral(ExpressionTree operand1, ExpressionTree operand2) {
    if (operand1.is(Tree.Kind.REMAINDER)) {
        BinaryExpressionTree modulusExp = (BinaryExpressionTree) operand1;
        Integer intValue = LiteralUtils.intLiteralValue(operand2);
        ExpressionTree leftOperand = modulusExp.leftOperand();
        ExpressionTree rightOperand = modulusExp.rightOperand();
        boolean usesMethodParam = isMethodParameter(leftOperand) || isMethodParameter(rightOperand);
        boolean usesSize = isSizeAccessor(leftOperand) || isSizeAccessor(rightOperand);
        if (intValue != null && intValue != 0 && usesMethodParam && !usesSize) {
            String sign = intValue > 0 ? "positive" : "negative";
            reportIssue(modulusExp.operatorToken(), "The results of this modulus operation may not be " + sign + ".");
        }
    }
}

Example 58 with ExpressionTree

use of org.sonar.plugins.java.api.tree.ExpressionTree in project sonar-java by SonarSource.

the class MutableMembersUsageCheck method visitAssignmentExpression.

@Override
public void visitAssignmentExpression(AssignmentExpressionTree tree) {
    super.visitAssignmentExpression(tree);
    if (!isMutableType(tree.expression())) {
        return;
    }
    ExpressionTree variable = tree.variable();
    Symbol leftSymbol = null;
    if (variable.is(Tree.Kind.IDENTIFIER)) {
        IdentifierTree identifierTree = (IdentifierTree) variable;
        leftSymbol = identifierTree.symbol();
    } else if (variable.is(Tree.Kind.MEMBER_SELECT)) {
        MemberSelectExpressionTree mit = (MemberSelectExpressionTree) variable;
        leftSymbol = mit.identifier().symbol();
    }
    if (leftSymbol != null && leftSymbol.isPrivate()) {
        checkStore(tree.expression());
    }
}

Example 59 with ExpressionTree

use of org.sonar.plugins.java.api.tree.ExpressionTree in project sonar-java by SonarSource.

the class MutableMembersUsageCheck method visitVariable.

@Override
public void visitVariable(VariableTree tree) {
    super.visitVariable(tree);
    ExpressionTree initializer = tree.initializer();
    if (initializer == null || !isMutableType(initializer)) {
        return;
    }
    checkStore(initializer);
}

Example 60 with ExpressionTree

use of org.sonar.plugins.java.api.tree.ExpressionTree in project sonar-java by SonarSource.

the class MutableMembersUsageCheck method visitReturnStatement.

@Override
public void visitReturnStatement(ReturnStatementTree tree) {
    super.visitReturnStatement(tree);
    ExpressionTree expressionTree = tree.expression();
    if (expressionTree == null || !isMutableType(expressionTree)) {
        return;
    }
    checkReturnedExpression(expressionTree);
}