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1 # ################################################################# |
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2 # Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 # All rights reserved. |
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4 # |
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5 # Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: |
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6 # |
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7 # * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. |
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8 # * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. |
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9 # * Neither the name of Nokia Corporation nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. |
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10 # |
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11 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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12 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS |
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13 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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14 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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15 # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.# |
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16 # |
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17 # null.py |
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18 # |
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19 # Checks : NULL equality check. |
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20 # |
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21 # Reason : There is no need to compare pointer variables to NULL. |
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22 # Use If(ptr). |
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23 # |
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24 # ################################################################# |
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25 |
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26 script = CScript("null") |
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27 script.iReString = r""" |
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28 [!=]=\s*NULL |
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29 """ |
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30 script.iFileExts = ["cpp"] |
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31 script.iCategory = KCategoryCodingStandards |
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32 script.iIgnore = KIgnoreCommentsAndQuotes |
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33 script.iSeverity = KSeverityLow |
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34 |
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35 def nullcompare(lines, currentline, rematch, filename): |
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36 # It's OK to compare against NULL in return statement |
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37 line = lines[currentline] |
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38 m = rematch.search(line) |
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39 if m: |
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40 if (line.find("return") > -1): |
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41 return 0 |
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42 if (line.find("ASSERT") > -1): |
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43 return 0 |
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44 return 1 |
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45 |
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46 return 0 |
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47 |
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48 script.iCompare = nullcompare |
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49 scanner.AddScript(script) |