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

Example 81 with ExpressionTree

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

the class CollectionSizeAndArrayLengthCheck method visitNode.

@Override
public void visitNode(Tree tree) {
    if (!hasSemantic()) {
        return;
    }
    BinaryExpressionTree bet = (BinaryExpressionTree) tree;
    ExpressionTree leftOperand = ExpressionUtils.skipParentheses(bet.leftOperand());
    ExpressionTree rightOperand = ExpressionUtils.skipParentheses(bet.rightOperand());
    boolean leftIsZero = isZero(leftOperand);
    boolean rightIsZero = isZero(rightOperand);
    if (!leftIsZero && !rightIsZero) {
        return;
    }
    ExpressionTree testedValue = leftIsZero ? rightOperand : leftOperand;
    if (testedValue.is(Tree.Kind.METHOD_INVOCATION)) {
        checkCollectionSize((MethodInvocationTree) testedValue, bet, leftIsZero);
    } else if (testedValue.is(Tree.Kind.MEMBER_SELECT)) {
        checkArrayLength((MemberSelectExpressionTree) testedValue, bet, leftIsZero);
    }
}

Example 82 with ExpressionTree

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

the class CompareToResultTestCheck method isIdentifierContainingCompareToResult.

private static boolean isIdentifierContainingCompareToResult(IdentifierTree identifier) {
    Symbol variableSymbol = identifier.symbol();
    if (!variableSymbol.isVariableSymbol()) {
        return false;
    }
    VariableTree variableDefinition = ((Symbol.VariableSymbol) variableSymbol).declaration();
    if (variableDefinition != null) {
        ExpressionTree initializer = variableDefinition.initializer();
        if (initializer != null && initializer.is(Tree.Kind.METHOD_INVOCATION) && variableSymbol.owner().isMethodSymbol()) {
            MethodTree method = ((Symbol.MethodSymbol) variableSymbol.owner()).declaration();
            return method != null && COMPARE_TO.matches((MethodInvocationTree) initializer) && !isReassigned(variableSymbol, method);
        }
    }
    return false;
}

Example 83 with ExpressionTree

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

the class ConcatenationWithStringValueOfCheck method visitBinaryExpression.

@Override
public void visitBinaryExpression(BinaryExpressionTree tree) {
    if (!tree.is(Kind.PLUS)) {
        super.visitBinaryExpression(tree);
        return;
    }
    Set<ExpressionTree> valueOfTrees = Sets.newHashSet();
    boolean flagIssue = false;
    ExpressionTree current = tree;
    while (current.is(Kind.PLUS)) {
        BinaryExpressionTree binOp = (BinaryExpressionTree) current;
        scan(binOp.rightOperand());
        if (isStringValueOf(binOp.rightOperand())) {
            valueOfTrees.add(binOp.rightOperand());
        }
        flagIssue |= binOp.leftOperand().is(Kind.STRING_LITERAL);
        if (!valueOfTrees.isEmpty()) {
            flagIssue |= binOp.rightOperand().is(Kind.STRING_LITERAL);
        }
        current = ((BinaryExpressionTree) current).leftOperand();
    }
    if (flagIssue) {
        for (ExpressionTree valueOfTree : valueOfTrees) {
            context.reportIssue(this, valueOfTree, "Directly append the argument of String.valueOf().");
        }
    }
    scan(current);
}

Example 84 with ExpressionTree

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

the class ConstantMethodCheck method visitNode.

@Override
public void visitNode(Tree tree) {
    MethodTree methodTree = (MethodTree) tree;
    BlockTree body = methodTree.block();
    if (!methodTree.modifiers().annotations().isEmpty() || ModifiersUtils.hasModifier(methodTree.modifiers(), Modifier.DEFAULT)) {
        return;
    }
    if (Boolean.FALSE.equals(methodTree.isOverriding()) && body != null && body.body().size() == 1) {
        StatementTree uniqueStatement = body.body().get(0);
        if (uniqueStatement.is(Kind.RETURN_STATEMENT)) {
            ExpressionTree returnedExpression = ((ReturnStatementTree) uniqueStatement).expression();
            if (isConstant(returnedExpression)) {
                reportIssue(returnedExpression, "Remove this method and declare a constant for this value.");
            }
        }
    }
}

Example 85 with ExpressionTree

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

the class CollectionMethodsWithLinearComplexityCheck method findAssignedTypes.

private static Set<String> findAssignedTypes(Symbol symbol) {
    Set<String> types = new HashSet<>();
    Tree declaration = symbol.declaration();
    if (declaration != null && declaration.is(Tree.Kind.VARIABLE)) {
        ExpressionTree initializer = ((VariableTree) declaration).initializer();
        if (initializer != null) {
            types.add(initializer.symbolType().fullyQualifiedName());
        }
    }
    symbol.usages().stream().flatMap(CollectionMethodsWithLinearComplexityCheck::usageInAssignment).map(assignment -> assignment.expression().symbolType().fullyQualifiedName()).forEach(types::add);
    return types;
}