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| package net.sourceforge.pmd.rules.design; |
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| import net.sourceforge.pmd.AbstractRule; |
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| import net.sourceforge.pmd.ast.ASTClassOrInterfaceDeclaration; |
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| import net.sourceforge.pmd.ast.ASTClassOrInterfaceType; |
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| import net.sourceforge.pmd.ast.ASTCompilationUnit; |
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| import net.sourceforge.pmd.ast.ASTConstructorDeclaration; |
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| import net.sourceforge.pmd.ast.ASTFieldDeclaration; |
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| import net.sourceforge.pmd.ast.ASTMethodDeclaration; |
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| import net.sourceforge.pmd.ast.ASTResultType; |
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| public class UseSingleton extends AbstractRule { |
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| private boolean isOK; |
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| private int methodCount; |
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| public Object visit(ASTCompilationUnit cu, Object data) {
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| methodCount = 0;
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| isOK = false;
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| Object result = cu.childrenAccept(this, data);
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| if (!isOK && methodCount > 0) {
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| addViolation(data, cu);
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| } |
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| return result;
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| } |
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| public Object visit(ASTFieldDeclaration decl, Object data) {
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| if (!decl.isStatic()) {
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| isOK = true;
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| } |
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| return data;
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| } |
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| public Object visit(ASTConstructorDeclaration decl, Object data) {
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| if (decl.isPrivate()) {
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| isOK = true;
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| } |
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| return data;
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| } |
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| public Object visit(ASTClassOrInterfaceDeclaration decl, Object data) {
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| if (decl.isAbstract()) {
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| isOK = true;
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| } |
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| return super.visit(decl, data);
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| } |
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| public Object visit(ASTMethodDeclaration decl, Object data) {
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| methodCount++;
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| if (!isOK && !decl.isStatic()) {
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| isOK = true;
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| } |
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| if (decl.getMethodName().equals("suite")) {
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| ASTResultType res = (ASTResultType) decl.getFirstChildOfType(ASTResultType.class);
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| ASTClassOrInterfaceType c = (ASTClassOrInterfaceType) res.getFirstChildOfType(ASTClassOrInterfaceType.class);
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| if (c != null && c.getImage().equals("Test")) {
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| isOK = true;
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| } |
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| } |
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| return data;
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| } |
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| } |