# #################################################################

# Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

# All rights reserved.

# 

# Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

# 

# * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

# * 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.

# * 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.

# 

# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 

# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS 

# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 

# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 

# 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.#

#

# leavingoperators.py

#

# Checks : Leaving functions called in operator functions.

#

# Reason : It is not obvious that operator functions can leave. 

# Calling leaving functions in operator functions should be 

# considered carefully.

#

# #################################################################

script = CScript("leavingoperators")

script.iReString = "(\w*[a-z]\w*L(C*|D|P))\s*\(|ELeave|User::Leave|tream\s+<<|tream\s+>>"

script.iFileExts = ["cpp"]

script.iCategory = KCategoryCodeReviewGuides

script.iIgnore = KIgnoreCommentsAndQuotes

script.iSeverity = KSeverityLow

reOperatorMethod = re.compile("""

	operator

	""", re.VERBOSE)

def leavecompare(lines, currentline, rematch, filename):

	currentMethod = scanner.iCurrentMethodName

	if (currentMethod <> "") and (currentMethod[:5] <> "Leave"):

		m = rematch.search(lines[currentline])

		if m and reOperatorMethod.search(currentMethod):

			line = lines[currentline]

			startline = currentline

			if (lines[currentline].find("TRAP") != -1):

				return 0

			bracketCount = line.count("(") - line.count(")")

			startBracketCount = bracketCount

			while (currentline > startline - 20) and (currentline >= 0):

				currentline -= 1

				line = lines[currentline]

				bracketCount += line.count("(") - line.count(")")

				if (lines[currentline].find("TRAP") != -1) and (bracketCount == startBracketCount + 1):

					return 0

			return 1

	return 0

script.iCompare = leavecompare

scanner.AddScript(script)