def collect_post_assumes(self):
"""For all call sites collect postconditions from callee's contracts and add as assume."""
self._get_spos()
if self.spos is None:
raise UF.CHCError('No supporting proof obligations found for ' +
str(self.cfun.name) + ' in file ' +
str(self.cfile.name))
self.spos.collect_post_assumes()
def _get_spos(self, force=False):
if self.spos is None or force:
xnode = UF.get_spo_xnode(self.capp.path, self.cfile.name,
self.cfun.name)
if not xnode is None:
self.spos = CFunctionSPOs(self, xnode)
else:
raise UF.CHCError('Unable to load spos for ' + self.cfun.name +
' in file ' + self.cfile.name)
def report_preconditions(self):
lines = []
try:
if len(self.preconditions) == 1:
return (' ' + self.name + ': ' +
self.preconditions.values()[0].pretty())
elif len(self.preconditions) > 1:
lines.append(' ' + self.name)
pclines = []
for pc in self.preconditions.values():
pclines.append(' ' + pc.pretty())
lines = lines + sorted(pclines)
return '\n'.join(lines)
return ''
except UF.CHCError as e:
msg = ('Error in contract function: ' + self.name + ' in file: ' +
self.cfilecontracts.cfile.name + ': ' + str(e))
raise UF.CHCError(msg)
def report_preconditions(self):
lines = []
try:
if len(self.preconditions) == 1:
return " " + self.name + ": " + self.preconditions.values(
)[0].pretty()
elif len(self.preconditions) > 1:
lines.append(" " + self.name)
pclines = []
for pc in self.preconditions.values():
pclines.append(" " + pc.pretty())
lines = lines + sorted(pclines)
return "\n".join(lines)
return ""
except UF.CHCError as e:
msg = ("Error in contract function: " + self.name + " in file: " +
self.cfilecontracts.cfile.name + ": " + str(e))
raise UF.CHCError(msg)
def get_constant(self):
try:
return int(self.tags[1])
except ValueError as e:
raise UF.CHCError(str(e))