NestedIfDepth
Since Checkstyle 3.2
Description
Restricts nested if-else blocks to a specified depth.
Properties
Examples
To configure the check:
<module name="Checker">
<module name="TreeWalker">
<module name="NestedIfDepth"/>
</module>
</module>
Example:
class Example1 {
void Example1() {
if (true) {
if (true) {}
else {}
}
if (true) {
if (true) {
if (true) {} // violation, nested if-else depth is 2 (max allowed is 1)
else{}
}
}
if (true) {
if (true) {
if (true) { // violation, nested if-else depth is 2 (max allowed is 1)
if (true) {} // violation, nested if-else depth is 2 (max allowed is 1)
else {}
}
}
}
if (true) {
if (true) {
if (true) { // violation, nested if-else depth is 2 (max allowed is 1)
if (true) { // violation, nested if-else depth is 2 (max allowed is 1)
if (true) { // violation, nested if-else depth is 4 (max allowed is 1)
if (true) {} // violation, nested if-else depth is 5 (max allowed is 1)
else {}
}
}
}
}
}
}
}
To configure the check to allow nesting depth 3:
<module name="Checker">
<module name="TreeWalker">
<module name="NestedIfDepth">
<property name="max" value="3"/>
</module>
</module>
</module>
Example:
class Example2 {
void Example2() {
if (true) {
if (true) {}
else {}
}
if (true) {
if (true) {
if (true) {}
else{}
}
}
if (true) {
if (true) {
if (true) {
if (true) {}
else {}
}
}
}
if (true) {
if (true) {
if (true) {
if (true) {
if (true) { // violation, nested if-else depth is 4 (max allowed is 3)
if (true) {} // violation, nested if-else depth is 5 (max allowed is 3)
else {}
}
}
}
}
}
}
}
Example of Usage
Violation Messages
All messages can be customized if the default message doesn't suit you. Please see the documentation to learn how to.
Package
com.puppycrawl.tools.checkstyle.checks.coding