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

Example 6 with ExpressionTree

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

the class IgnoredReturnValueCheck method visitNode.

@Override
public void visitNode(Tree tree) {
    ExpressionTree expr = ((ExpressionStatementTree) tree).expression();
    if (expr.is(Tree.Kind.METHOD_INVOCATION)) {
        MethodInvocationTree mit = (MethodInvocationTree) expr;
        if (isExcluded(mit)) {
            return;
        }
        Symbol methodSymbol = mit.symbol();
        if (!isVoidOrUnknown(mit.symbolType()) && isCheckedType(methodSymbol.owner().type()) && methodSymbol.isPublic() && !isConstructor(methodSymbol)) {
            IdentifierTree methodName = ExpressionUtils.methodName(mit);
            reportIssue(methodName, "The return value of \"" + methodName.name() + "\" must be used.");
        }
    }
}

Example 7 with ExpressionTree

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

the class HardcodedURICheck method isHardcodedURI.

private static boolean isHardcodedURI(ExpressionTree expr) {
    ExpressionTree newExpr = ExpressionUtils.skipParentheses(expr);
    if (!newExpr.is(Tree.Kind.STRING_LITERAL)) {
        return false;
    }
    String stringLiteral = LiteralUtils.trimQuotes(((LiteralTree) newExpr).value());
    return URI_PATTERN.matcher(stringLiteral).find();
}

Example 8 with ExpressionTree

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

the class EnumSetCheck method visitNode.

@Override
public void visitNode(Tree tree) {
    if (!hasSemantic()) {
        return;
    }
    VariableTree variableTree = (VariableTree) tree;
    ExpressionTree initializer = variableTree.initializer();
    if (initializer == null) {
        return;
    }
    if (initializer.is(Kind.METHOD_INVOCATION)) {
        MethodInvocationTree mit = (MethodInvocationTree) initializer;
        if (COLLECTIONS_UNMODIFIABLE.matches(mit)) {
            // check the collection used as parameter
            initializer = mit.arguments().get(0);
        } else if (!SET_CREATION_METHODS.anyMatch(mit) || "immutableEnumSet".equals(mit.symbol().name())) {
            // but discard any other method invocations (killing the noise)
            return;
        }
    }
    checkIssue(initializer.symbolType(), initializer, variableTree.type());
}

Example 9 with ExpressionTree

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

the class ForLoopTerminationConditionCheck method visitForStatement.

@Override
public void visitForStatement(ForStatementTree forStatement) {
    ExpressionTree condition = forStatement.condition();
    if (condition == null || !condition.is(Tree.Kind.NOT_EQUAL_TO)) {
        return;
    }
    BinaryExpressionTree inequalityCondition = (BinaryExpressionTree) condition;
    IntInequality loopVarAndTerminalValue = IntInequality.of(inequalityCondition);
    if (loopVarAndTerminalValue != null) {
        IdentifierTree loopIdentifier = loopVarAndTerminalValue.identifier;
        int terminationValue = loopVarAndTerminalValue.literalValue;
        Integer initialValue = initialValue(loopIdentifier, forStatement);
        if (initialValue != null && initialValue != terminationValue) {
            checkIncrement(forStatement, loopIdentifier, initialValue < terminationValue);
        }
    }
}

Example 10 with ExpressionTree

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

the class IdenticalOperandOnBinaryExpressionCheck method checkEqualsMethods.

private void checkEqualsMethods(MethodInvocationTree mit) {
    if (EQUALS_MATCHER.matches(mit)) {
        if (mit.methodSelect().is(Tree.Kind.MEMBER_SELECT)) {
            ExpressionTree leftOp = ((MemberSelectExpressionTree) mit.methodSelect()).expression();
            ExpressionTree rightOp = mit.arguments().get(0);
            if (SyntacticEquivalence.areEquivalent(leftOp, rightOp)) {
                reportIssue(rightOp, "Correct one of the identical sub-expressions on both sides of equals.", ImmutableList.of(new JavaFileScannerContext.Location("", leftOp)), null);
            }
        }
    } else if (DEEP_EQUALS_MATCHER.matches(mit) || OBJECTS_EQUALS_MATCHER.matches(mit)) {
        ExpressionTree leftOp = mit.arguments().get(0);
        ExpressionTree rightOp = mit.arguments().get(1);
        if (SyntacticEquivalence.areEquivalent(leftOp, rightOp)) {
            reportIssue(rightOp, "Correct one of the identical argument sub-expressions.", ImmutableList.of(new JavaFileScannerContext.Location("", leftOp)), null);
        }
    }
}