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96 lines (70 loc) · 2.91 KB
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#!/usr/bin/env python
"""
Check for errors in process definitions.
Copyright (C) Sarah Mount, 2010.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
import compiler
import compiler.ast as ast
import compiler.visitor as visitor
import exstatic.cspwarnings
__author__ = 'Sarah Mount <s.mount@wlv.ac.uk>'
__date__ = 'May 2010'
__all__ = ['ProcessChecker']
class ProcessChecker(visitor.ASTVisitor):
"""Check that documented readsets and writesets are correct
w.r.t. code.
"""
def __init__(self, filename):
visitor.ASTVisitor.__init__(self)
self.filename = filename
self.current_process = ''
self.current_process_lineno = 0
return
def is_process(self, decorators):
"""Determine whether or not the current function is a CSP
process.
"""
for decorator in decorators:
if (decorator.name == 'process' or decorator.name == 'forever'):
return True
return False
def visitFunction(self, node):
"""Visit function definition.
"""
# If this function definition is not a CSP process, ignore it.
if (node.decorators is None or
self.is_process(node.decorators) is None):
return
# Store useful information about this process.
self.current_process = node.name
self.current_process_lineno = node.lineno
# 'I001':'Function is a CSP process or server process',
exstatic.cspwarnings.create_error(self.filename,
self.current_process_lineno,
self.current_process,
'I001')
# 'W004':'@process or @forever applied to method (rather than function)'
if 'self' in node.argnames:
exstatic.cspwarnings.create_error(self.filename,
self.current_process_lineno,
self.current_process,
'W004')
return
if __name__ == '__main__':
import sys
lint = ProcessChecker(sys.argv[1])
compiler.walk(compiler.parseFile(sys.argv[1]),
lint,
walker=lint,
verbose=5)
exstatic.cspwarnings.print_errors(excluded=[])