/**
* BSD-style license; for more info see http://pmd.sourceforge.net/license.html
*/
package net.sourceforge.pmd.lang.java.rule.design;
import net.sourceforge.pmd.lang.java.ast.ASTCompilationUnit;
import net.sourceforge.pmd.lang.java.ast.ASTIfStatement;
import net.sourceforge.pmd.lang.java.rule.AbstractJavaRule;
import net.sourceforge.pmd.lang.rule.properties.IntegerProperty;
public class AvoidDeeplyNestedIfStmtsRule extends AbstractJavaRule {
private int depth;
private int depthLimit;
private static final IntegerProperty PROBLEM_DEPTH_DESCRIPTOR = new IntegerProperty("problemDepth",
"The if statement depth reporting threshold", 1, 25, 3, 1.0f);
public AvoidDeeplyNestedIfStmtsRule() {
definePropertyDescriptor(PROBLEM_DEPTH_DESCRIPTOR);
}
public Object visit(ASTCompilationUnit node, Object data) {
depth = 0;
depthLimit = getProperty(PROBLEM_DEPTH_DESCRIPTOR);
return super.visit(node, data);
}
public Object visit(ASTIfStatement node, Object data) {
if (!node.hasElse()) {
depth++;
}
super.visit(node, data);
if (depth == depthLimit) {
addViolation(data, node);
}
depth--;
return data;
}
}