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

# 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.#

#

# noleavetrap.py

#

# Checks : TRAP used with no leaving functions.

#

# Reason : A TRAP is unnecessary if there are no leaving functions.

#

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

script = CScript("noleavetrap")

script.iReString = "^\s*TRAPD?"

script.iFileExts = ["cpp"]

script.iCategory = KCategoryCodeReviewGuides

script.iIgnore = KIgnoreCommentsAndQuotes

script.iSeverity = KSeverityLow

reLeave = re.compile("(L[CDP]?\s*\(|ELeave|\)\s*\(|<<|>>)")

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

    line = lines[currentline]

    m = rematch.search(line)

    if m:

    	if (line.find("(") == -1) and (currentline + 1 < len(lines)):

    		currentline += 1

    		line = lines[currentline]

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

        found = reLeave.search(line) 

        while (bracketCount > 0) and (currentline + 1 < len(lines)):

            currentline += 1

            line = lines[currentline]

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

            if not found:

                found = reLeave.search(line) 

        if found:

            return 0

        else:

        	return 1

    return 0

script.iCompare = noleavetrapcompare

scanner.AddScript(script)