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package com.puppycrawl.tools.checkstyle.checks.metrics; |
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import java.math.BigInteger; |
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import com.puppycrawl.tools.checkstyle.api.DetailAST; |
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import com.puppycrawl.tools.checkstyle.api.TokenTypes; |
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public final class NPathComplexityCheck extends AbstractComplexityCheck |
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{ |
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private static final int DEFAULT_MAX = 200; |
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public NPathComplexityCheck() |
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{ |
46 | 2 | super(DEFAULT_MAX); |
47 | 2 | } |
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@Override |
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public int[] getDefaultTokens() |
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{ |
52 | 2 | return new int[] { |
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TokenTypes.CTOR_DEF, |
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TokenTypes.METHOD_DEF, |
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TokenTypes.STATIC_INIT, |
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TokenTypes.INSTANCE_INIT, |
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TokenTypes.LITERAL_WHILE, |
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TokenTypes.LITERAL_DO, |
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TokenTypes.LITERAL_FOR, |
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TokenTypes.LITERAL_IF, |
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TokenTypes.LITERAL_ELSE, |
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TokenTypes.LITERAL_SWITCH, |
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TokenTypes.LITERAL_CASE, |
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TokenTypes.LITERAL_TRY, |
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TokenTypes.LITERAL_CATCH, |
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TokenTypes.QUESTION, |
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}; |
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} |
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@Override |
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public void visitToken(DetailAST aAST) |
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{ |
73 | 119 | switch (aAST.getType()) { |
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case TokenTypes.LITERAL_WHILE: |
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case TokenTypes.LITERAL_DO: |
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case TokenTypes.LITERAL_FOR: |
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case TokenTypes.LITERAL_IF: |
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case TokenTypes.QUESTION: |
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case TokenTypes.LITERAL_TRY: |
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case TokenTypes.LITERAL_SWITCH: |
81 | 98 | visitMultiplyingConditional(); |
82 | 98 | break; |
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case TokenTypes.LITERAL_ELSE: |
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case TokenTypes.LITERAL_CATCH: |
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case TokenTypes.LITERAL_CASE: |
86 | 10 | visitAddingConditional(); |
87 | 10 | break; |
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default: |
89 | 11 | super.visitToken(aAST); |
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} |
91 | 119 | } |
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@Override |
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public void leaveToken(DetailAST aAST) |
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{ |
96 | 119 | switch (aAST.getType()) { |
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case TokenTypes.LITERAL_WHILE: |
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case TokenTypes.LITERAL_DO: |
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case TokenTypes.LITERAL_FOR: |
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case TokenTypes.LITERAL_IF: |
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case TokenTypes.QUESTION: |
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case TokenTypes.LITERAL_TRY: |
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case TokenTypes.LITERAL_SWITCH: |
104 | 98 | leaveMultiplyingConditional(); |
105 | 98 | break; |
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case TokenTypes.LITERAL_ELSE: |
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case TokenTypes.LITERAL_CATCH: |
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case TokenTypes.LITERAL_CASE: |
109 | 10 | leaveAddingConditional(); |
110 | 10 | break; |
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default: |
112 | 11 | super.leaveToken(aAST); |
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} |
114 | 119 | } |
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@Override |
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protected String getMessageID() |
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{ |
119 | 11 | return "npathComplexity"; |
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} |
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private void visitAddingConditional() |
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{ |
125 | 10 | pushValue(); |
126 | 10 | } |
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private void leaveAddingConditional() |
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{ |
131 | 10 | setCurrentValue( |
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getCurrentValue().subtract(BigInteger.ONE).add(popValue())); |
133 | 10 | } |
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private void visitMultiplyingConditional() |
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{ |
138 | 98 | pushValue(); |
139 | 98 | } |
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private void leaveMultiplyingConditional() |
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{ |
144 | 98 | setCurrentValue( |
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getCurrentValue().add(BigInteger.ONE).multiply(popValue())); |
146 | 98 | } |
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} |