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| package net.sourceforge.pmd.rules.strings; |
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| import net.sourceforge.pmd.ast.Node; |
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| import net.sourceforge.pmd.ast.SimpleNode; |
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| import net.sourceforge.pmd.rules.AbstractInefficientZeroCheck; |
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| import net.sourceforge.pmd.symboltable.NameOccurrence; |
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| public class InefficientEmptyStringCheck extends AbstractInefficientZeroCheck { |
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| public boolean isTargetMethod(NameOccurrence occ) {
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| if (occ.getNameForWhichThisIsAQualifier() != null
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| && occ.getNameForWhichThisIsAQualifier().getImage().indexOf("trim") != -1) { |
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| Node pExpression = occ.getLocation().jjtGetParent().jjtGetParent();
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| if (pExpression.jjtGetNumChildren() >= 3
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| && "length".equals(((SimpleNode) pExpression.jjtGetChild(2)).getImage())) { |
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| return true;
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| } |
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| } |
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| return false;
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| } |
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| public boolean appliesToClassName(String name) {
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| return "String".equals(name);
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| } |
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| } |