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

Example 96 with ExpressionTree

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

the class ReplaceLambdaByMethodRefCheck method hasNonFinalFieldInMethodSelect.

private static boolean hasNonFinalFieldInMethodSelect(MethodInvocationTree mit) {
    MemberSelectExpressionTree mse = getMemberSelect(mit);
    if (mse == null) {
        return false;
    }
    ExpressionTree expression = ExpressionUtils.skipParentheses(mse.expression());
    Symbol symbol = null;
    if (expression.is(Tree.Kind.IDENTIFIER)) {
        symbol = ((IdentifierTree) expression).symbol();
    } else if (expression.is(Tree.Kind.MEMBER_SELECT)) {
        symbol = ((MemberSelectExpressionTree) expression).identifier().symbol();
    }
    return symbol != null && symbol.owner().isTypeSymbol() && !isThisOrSuper(symbol.name()) && !symbol.isFinal();
}

Example 97 with ExpressionTree

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

the class ReplaceLambdaByMethodRefCheck method getNullCheck.

private static Optional<String> getNullCheck(@Nullable Tree statement, LambdaExpressionTree tree) {
    if (statement == null) {
        return Optional.empty();
    }
    Tree expr = statement;
    if (expr.is(Tree.Kind.PARENTHESIZED_EXPRESSION)) {
        expr = ExpressionUtils.skipParentheses((ParenthesizedTree) statement);
    }
    if (expr.is(Tree.Kind.EQUAL_TO, Tree.Kind.NOT_EQUAL_TO)) {
        BinaryExpressionTree bet = (BinaryExpressionTree) expr;
        ExpressionTree leftOperand = ExpressionUtils.skipParentheses(bet.leftOperand());
        ExpressionTree rightOperand = ExpressionUtils.skipParentheses(bet.rightOperand());
        if (nullAgainstParam(leftOperand, rightOperand, tree) || nullAgainstParam(rightOperand, leftOperand, tree)) {
            return Optional.of(expr.is(Tree.Kind.EQUAL_TO) ? "isNull" : "nonNull");
        }
    }
    return Optional.empty();
}

Example 98 with ExpressionTree

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

the class RedundantStreamCollectCheck method onMethodInvocationFound.

@Override
protected void onMethodInvocationFound(MethodInvocationTree collectMIT) {
    ExpressionTree argument = collectMIT.arguments().get(0);
    if (argument.is(Tree.Kind.METHOD_INVOCATION)) {
        MethodInvocationTree methodInvocation = (MethodInvocationTree) argument;
        REPLACEMENTS.entrySet().stream().filter(e -> e.getKey().matches(methodInvocation)).findFirst().ifPresent(e -> context.reportIssue(this, ExpressionUtils.methodName(methodInvocation), "Use \"" + e.getValue() + "\" instead."));
    }
}

Example 99 with ExpressionTree

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

the class RedundantTypeCastCheck method requiredForMemberAccess.

private static boolean requiredForMemberAccess(TypeCastTree typeCastTree) {
    ExpressionTree expression = typeCastTree.expression();
    if (!expression.is(Tree.Kind.METHOD_INVOCATION)) {
        Tree parent = typeCastTree.parent();
        return expression.is(Tree.Kind.METHOD_REFERENCE) && parent != null && skipParentheses(parent).is(Tree.Kind.MEMBER_SELECT);
    }
    Symbol symbol = ((MethodInvocationTree) expression).symbol();
    if (!symbol.isMethodSymbol()) {
        return false;
    }
    Type returnType = ((Symbol.MethodSymbol) symbol).returnType().type();
    if (!(returnType instanceof TypeVariableJavaType) || ((TypeVariableJavaType) returnType).bounds().get(0).is("java.lang.Object")) {
        return false;
    }
    // as the member accessed could have also been part of initial type
    return skipParentheses(typeCastTree.parent()).is(Tree.Kind.MEMBER_SELECT);
}

Example 100 with ExpressionTree

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

the class StringLiteralDuplicatedCheck method visitVariable.

@Override
public void visitVariable(VariableTree tree) {
    ExpressionTree initializer = tree.initializer();
    if (initializer != null && initializer.is(Tree.Kind.STRING_LITERAL) && ModifiersUtils.hasModifier(tree.modifiers(), Modifier.STATIC) && ModifiersUtils.hasModifier(tree.modifiers(), Modifier.FINAL)) {
        constants.putIfAbsent(((LiteralTree) initializer).value(), tree);
        return;
    }
    super.visitVariable(tree);
}