srcanamdw/codescanner/scripts/nonleavenew.py
changeset 1 22878952f6e2
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0:509e4801c378 1:22878952f6e2
       
     1 # #################################################################
       
     2 # Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
       
     3 # All rights reserved.
       
     4 # 
       
     5 # Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
       
     6 # 
       
     7 # * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
       
     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.
       
     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.
       
    10 # 
       
    11 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 
       
    12 # THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 
       
    13 # BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 
       
    14 # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 
       
    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.#
       
    16 #
       
    17 # nonleavenew.py
       
    18 #
       
    19 # Checks : Use of new without (ELeave).
       
    20 #
       
    21 # Reason : Using new without (ELeave) is only used in special 
       
    22 # circumstances. The leaving variant should typically be used in 
       
    23 # preference. A common exception is for application creation, 
       
    24 # where NULL is returned for failed creation.
       
    25 #
       
    26 # #################################################################
       
    27 
       
    28 script = CScript("nonleavenew")
       
    29 script.iReString = r"""
       
    30 	(=|\(|,)		# equals, open bracket or comma
       
    31 	\s*				# optional whitespace
       
    32 	new\s+			# "new" plus at least one whitespace char
       
    33 	([^\(\s]		# a character other than a bracket
       
    34 	.*)
       
    35 	"""
       
    36 script.iFileExts = ["cpp"]
       
    37 script.iCategory = KCategoryCodeReviewGuides
       
    38 script.iIgnore = KIgnoreCommentsAndQuotes
       
    39 script.iSeverity = KSeverityLow
       
    40 
       
    41 currentfilename = ""
       
    42 iswindowsfile = 0
       
    43 rewindows = re.compile("^\s*#include\s+<(windows|wchar).h>", re.IGNORECASE)
       
    44 
       
    45 def checkforwindowsinclude(lines, filename):
       
    46 	global currentfilename
       
    47 	global iswindowsfile
       
    48 	global rewindows
       
    49 
       
    50 	if (currentfilename <> filename):
       
    51 		currentfilename = filename
       
    52 		iswindowsfile = 0
       
    53 		for line in lines:
       
    54 			m = rewindows.search(line)
       
    55 			if m:
       
    56 				iswindowsfile = 1
       
    57 				break
       
    58 
       
    59 	return iswindowsfile
       
    60 
       
    61 def nonleavenewcompare(lines, currentline, rematch, filename):
       
    62 	m = rematch.search(lines[currentline])
       
    63 	if m:
       
    64 		if (m.group(2).find("Application") <> -1):
       
    65 			return 0
       
    66 		else:				
       
    67 			return not checkforwindowsinclude(lines, filename)
       
    68 
       
    69 	return 0
       
    70 
       
    71 script.iCompare = nonleavenewcompare
       
    72 scanner.AddScript(script)