1 /***
2 * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
3 */
4 package net.sourceforge.pmd.rules;
5
6 import net.sourceforge.pmd.AbstractRule;
7 import net.sourceforge.pmd.ast.ASTCompilationUnit;
8 import net.sourceforge.pmd.ast.ASTIfStatement;
9
10 public class AvoidDeeplyNestedIfStmtsRule extends AbstractRule {
11
12 private int depth;
13
14 public Object visit(ASTCompilationUnit node, Object data) {
15 depth = 0;
16 return super.visit(node, data);
17 }
18
19 public Object visit(ASTIfStatement node, Object data) {
20 if (!node.hasElse()) {
21 depth++;
22 }
23 super.visit(node, data);
24 if (depth == getIntProperty("problemDepth")) {
25 addViolation(data, node);
26 }
27 depth--;
28 return data;
29 }
30
31 }