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RD and Live variable.py
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RD and Live variable.py
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class A():
def __init__(self,V,c,edges,gen,kill):
self.V=V
self.c=0
self.edges=edges
self.gen=gen
self.kill=kill
#function for operator
def operator(self,op):
if op['_type']=='Sub':
return "-"
elif op['_type']=='Add':
return "+"
elif op['_type']=='Mult':
return "*"
elif op['_type']=='Div':
return "/"
elif op['_type']=='Mod':
return "%"
elif op['_type']=='Pow':
return "**"
elif op['_type']=='BitOr':
return "|"
elif op['_type']=='BitAnd':
return "&"
elif op['_type']=='BitXor':
return "^"
elif op['_type']=='LShift':
return "<<"
elif op['_type']=='RShift':
return ">>"
elif op['_type']=='FloorDiv':
return "//"
#function for operation
def operation(self,ops):
for op in ops:
if op['_type']=='Gt':
return ">"
elif op['_type']=='Lt':
return "<"
elif op['_type']=='LtE':
return "<="
elif op['_type']=='GtE':
return ">="
elif op['_type']=='Eq':
return "=="
elif op['_type']=='NotEq':
return "!="
def exp(self,value):
s=""
p=""
if len(value['args'])>0:
for i in value['args']:
if i['_type']=='Name':
p+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
p+=i['func']['id']+'('
for j in i['args']:
p+=j['id']
self.gen[self.c].append(j['id'])
p+=','
p+=')'
elif i['_type']=='Constant':
p+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['left']['value'])
if v2:
p+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
p+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['right']['value'])
if v2:
p+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
p+=','
if value['_type']=='Call':
s+=value['func']['id']+'('+p[0:-1]+')'
if self.c in self.V:
self.V[self.c]+=s+"\n"
else:
self.V[self.c]=s+"\n"
#function for AugAssign
def AugAssign(self,targets,op,value):
#print(p)
s=""
if value['_type']=='Constant':
s=str(value['value'])
elif value['_type']=='Name':
s=str(value['id'])
self.gen[self.c].append(value['id'])
elif value['_type']=='Call':
p=""
if len(value['args'])>0:
for i in value['args']:
if i['_type']=='Name':
p+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
p+=i['func']['id']+'()'
elif i['_type']=='Constant':
p+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['left']['value'])
if v2:
p+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
p+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['right']['value'])
if v2:
p+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
p+=','
s=value['func']['id']+'('+p[0:-1]+')'
elif value['_type']=='Compare':
w,x=0,0
for k in value['left']:
if k=='value':
w=1
if k=='id':
x=1
l=str()
n,m=0,0
for i in value['comparators']:
for j in i:
if j=='value':
n=1
if j=='id':
m=1
if n:
l=value['comparators'][0]['id']
self.gen[self.c].append(value['comparators'][0]['id'])
if m:
l=value['comparators'][0]['value']
if w:
s=str(value['left']['value'])+obj.operation(value['ops'])+str(l)
if x:
s=str(value['left']['id'])+obj.operation(value['ops'])+str(l)
self.gen[self.c].append(value['left']['id'])
if targets==0:
return str(s)
elif value['_type']=='BinOp':
w,x,v,p,t,y=0,0,0,0,0,0
m=""
n=""
for k in value['left']:
if k=='value':
w=1
if k=='id':
x=1
self.gen[self.c].append(value['left']['id'])
if k=='func':
y=1
self.gen[self.c].append(value['left']['func']['id'])
if y:
for i in value['left']['args']:
if i['_type']=='Name':
m+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
m+=i['func']['id']+'()'
elif i['_type']=='Constant':
m+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
m+=str(i['left']['value'])
if v2:
m+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
m+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
m+=str(i['right']['value'])
if v2:
m+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
m+=','
for k in value['right']:
if k=='value':
v=1
if k=='id':
p=1
self.gen[self.c].append(value['right']['id'])
if k=='func':
t=1
self.gen[self.c].append(value['right']['func']['id'])
if t:
for i in value['right']['args']:
if i['_type']=='Name':
n+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
n+=i['func']['id']+'()'
elif i['_type']=='Constant':
n+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
n+=str(i['left']['value'])
if v2:
n+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
n+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
n+=str(i['right']['value'])
if v2:
n+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
n+=','
if v and w:
s=str(value['left']['value'])+obj.operator(value['op'])+str(value['right']['value'])
if x and v:
s=str(value['left']['id'])+obj.operator(value['op'])+str(value['right']['value'])
if p and x:
s=str(value['left']['id'])+obj.operator(value['op'])+str(value['right']['id'])
if p and w:
s=str(value['left']['value'])+obj.operator(value['op'])+str(value['right']['id'])
if w and t:
s=str(value['left']['value'])+obj.operator(value['op'])+str(value['right']['func']['id'])+'('+n[0:-1]+')'
if v and y:
s=str(value['left']['func']['id'])+'('+m[0:-1]+')'+obj.operator(value['op'])+str(value['right']['id'])
if x and t:
s=str(value['left']['id'])+obj.operator(value['op'])+str(value['right']['func']['id'])+'('+n[0:-1]+')'
if y and t:
s=str(value['left']['func']['id'])+'('+m[0:-1]+')'+obj.operator(value['op'])+str(value['right']['func']['id'])+'('+n[0:-1]+')'
if y and p:
s=str(value['left']['func']['id'])+'('+m[0:-1]+')'+obj.operator(value['op'])+str(value['right']['id'])
#print("Assignment Statement: "+targets['id']+str(p)+"="+s)
if self.c in self.V:
self.V[self.c]+=targets['id']+str(op)+"="+s+"\n"
else:
self.V[self.c]=targets['id']+str(op)+"="+s+"\n"
self.kill[self.c].append(targets['id'])
#function for Assignment
def Assignment(self,targets,value):
s=""
if value['_type']=='Constant':
s=str(value['value'])
elif value['_type']=='Call':
p=""
if len(value['args'])>0:
for i in value['args']:
if i['_type']=='Name':
p+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
p+=i['func']['id']+'()'
elif i['_type']=='Constant':
p+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['left']['value'])
if v2:
p+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
p+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['right']['value'])
if v2:
p+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
p+=','
s=value['func']['id']+'('+p[0:-1]+')'
elif value['_type']=='Compare':
w,x=0,0
for k in value['left']:
if k=='value':
w=1
if k=='id':
x=1
l=str()
n,m=0,0
for i in value['comparators']:
for j in i:
if j=='value':
n=1
if j=='id':
m=1
if m:
l=value['comparators'][0]['id']
self.gen[self.c].append(value['comparators'][0]['id'])
if n:
l=value['comparators'][0]['value']
if w:
s=str(value['left']['value'])+obj.operation(value['ops'])+str(l)
if x:
s=str(value['left']['id'])+obj.operation(value['ops'])+str(l)
self.gen[self.c].append(value['left']['id'])
if targets==0:
return str(s)
elif value['_type']=='BinOp':
w,x,v,p,t,y=0,0,0,0,0,0
m=""
n=""
for k in value['left']:
if k=='value':
w=1
if k=='id':
x=1
self.gen[self.c].append(value['left']['id'])
if k=='func':
y=1
self.gen[self.c].append(value['left']['func']['id'])
if y:
for i in value['left']['args']:
if i['_type']=='Name':
m+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
m+=i['func']['id']+'()'
elif i['_type']=='Constant':
m+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
m+=str(i['left']['value'])
if v2:
m+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
m+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
m+=str(i['right']['value'])
if v2:
m+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
m+=','
for k in value['right']:
if k=='value':
v=1
if k=='id':
p=1
self.gen[self.c].append(value['right']['id'])
if k=='func':
t=1
self.gen[self.c].append(value['right']['func']['id'])
if t:
for i in value['right']['args']:
if i['_type']=='Name':
n+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
n+=i['func']['id']+'()'
elif i['_type']=='Constant':
n+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
n+=str(i['left']['value'])
if v2:
n+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
n+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
n+=str(i['right']['value'])
if v2:
n+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
n+=','
if v and w:
s=str(value['left']['value'])+obj.operator(value['op'])+str(value['right']['value'])
if x and v:
s=str(value['left']['id'])+obj.operator(value['op'])+str(value['right']['value'])
if p and x:
s=str(value['left']['id'])+obj.operator(value['op'])+str(value['right']['id'])
if p and w:
s=str(value['left']['value'])+obj.operator(value['op'])+str(value['right']['id'])
if w and t:
s=str(value['left']['value'])+obj.operator(value['op'])+str(value['right']['func']['id'])+'('+n[0:-1]+')'
if v and y:
s=str(value['left']['func']['id'])+'('+m[0:-1]+')'+obj.operator(value['op'])+str(value['right']['id'])
if x and t:
s=str(value['left']['id'])+obj.operator(value['op'])+str(value['right']['func']['id'])+'('+n[0:-1]+')'
if y and t:
s=str(value['left']['func']['id'])+'('+m[0:-1]+')'+obj.operator(value['op'])+str(value['right']['func']['id'])+'('+n[0:-1]+')'
if y and p:
s=str(value['left']['func']['id'])+'('+m[0:-1]+')'+obj.operator(value['op'])+str(value['right']['id'])
elif value['_type']=='Name':
s=value['id']
self.gen[self.c].append(value['id'])
if targets==0:
return str(s)
for target in targets:
#print("Assignment Statement: "+target['id']+" = "+s)
if self.c in self.V:
self.V[self.c]+=target['id']+"="+s+"\n"
else:
self.V[self.c]=target['id']+"="+s+"\n"
self.kill[self.c].append(target['id'])
#function for while loop
def whileLoop(self,body,test):
self.c+=1
self.edges[self.c-1].append(self.c)
l=0
for i in test:
if i=='ops':
l=1
ops=obj.operation(test['ops'])
if l:
s=""
for comp in test['comparators']:
if comp['_type']=='Constant':
s+=str(comp['value'])
elif comp['_type']=='Name':
s+=comp['id']
self.gen[self.c].append(comp['id'])
elif comp['_type']=='Call':
p=""
if len(comp['args'])>0:
for i in comp['args']:
if i['_type']=='Name':
p+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
p+=i['func']['id']+'()'
elif i['_type']=='Constant':
p+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['left']['value'])
if v2:
p+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
p+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['right']['value'])
if v2:
p+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
p+=','
s+=comp['func']['id']+'('+p[0:-1]+')'
#print("Branch condition: "+test['left']['id']+ops+s)
self.V[self.c]='while '+test['left']['id']+ops+s+"\n"
self.gen[self.c].append(test['left']['id'])
else:
self.V[self.c]='branch['+test['id']+']'+"\n"
self.gen[self.c].append(test['id'])
p=self.c
q=self.c
if len(body)>0:
self.c+=1
self.edges[self.c-1].append(self.c)
self.edges[self.c].append(p)
g=0
for i in body:
if i['_type']=='While':
if not g:
self.c-=1
else:
self.edges[self.c-1].append(self.c)
obj.whileLoop(i['body'],i['test'])
elif i['_type']=='Assign':
g=1
obj.Assignment(i['targets'],i['value'])
elif i['_type']=='AugAssign':
g=1
s=obj.operator(i['op'])
obj.AugAssign(i['target'],s,i['value'])
elif i['_type']=='If':
q=self.c
if not g:
self.c-=1
else:
self.edges[self.c].append(self.c+1)
obj.condition(i['body'],i['orelse'],i['test'])
self.edges[self.c].append(p)
self.edges[q+2].append(p)
elif i['_type']=='Expr':
obj.exp(i['value'])
elif i['_type']=='Call':
s=""
if len(value['args'])>0:
for j in value['args']:
if i['_type']=='Name':
s+=j['id']
self.gen[self.c].append(j['id'])
elif j['_type']=='Call':
s+=j['func']['id']+'()'
elif j['_type']=='Constant':
s+=str(j['value'])
elif j['_type']=='BinOp':
v1,v2=0,0
for k in j['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
s+=str(i['left']['value'])
if v2:
s+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
s+=str(obj.operator(i['op']))
v1,v2=0,0
for k in j['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
s+=str(i['right']['value'])
if v2:
s+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
s+=','
s1=value['func']['id']+'('+s[0:-1]+')'
if self.c in self.V:
self.V[self.c]+=s1+"\n"
else:
self.V[self.c]=s1+"\n"
return p
#function for condition(if else)
def condition(self,body,orelse,test):
#print(type(body))
self.c+=1
q=self.c
if self.c==1:
self.edges[self.c-1].append(self.c)
l=0
for i in test:
if i=='ops':
l=1
ops=obj.operation(test['ops'])
if l:
s=""
for comp in test['comparators']:
if comp['_type']=='Constant':
s+=str(comp['value'])
elif comp['_type']=='Name':
s+=comp['id']
self.gen[self.c].append(comp['id'])
elif comp['_type']=='Call':
p=""
if len(comp['args'])>0:
for i in comp['args']:
if i['_type']=='Name':
p+=i['id']
self.gen[self.c].append(i['id'])
elif i['_type']=='Call':
p+=i['func']['id']+'()'
elif i['_type']=='Constant':
p+=str(i['value'])
elif i['_type']=='BinOp':
v1,v2=0,0
for k in i['left']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['left']['value'])
if v2:
p+=i['left']['id']
self.gen[self.c].append(i['left']['id'])
p+=str(obj.operator(i['op']))
v1,v2=0,0
for k in i['right']:
if k=='value':
v1=1
if k=='id':
v2=1
if v1:
p+=str(i['right']['value'])
if v2:
p+=i['right']['id']
self.gen[self.c].append(i['right']['id'])
p+=','
s+=comp['func']['id']+'('+p[0:-1]+')'
#print("Branch condition: "+test['left']['id']+ops+s)
self.V[self.c]='if '+test['left']['id']+ops+s+"\n"
self.gen[self.c].append(test['left']['id'])
else:
self.V[self.c]='branch['+test['id']+']'+"\n"
self.gen[self.c].append(test['id'])
p=self.c
m=0
n=-1
if len(body)>0:
self.c+=1
self.edges[self.c-1].append(self.c)
g=0
for i in body:
if i['_type']=='If':
if not g:
self.c-=1
else:
self.edges[self.c].append(self.c+1)
obj.condition(i['body'],i['orelse'],i['test'])
elif i['_type']=='While':
if not g:
self.c-=1
else:
self.edges[self.c].append(self.c+1)
obj.whileLoop(i['body'],i['test'])
n=self.c-1
elif i['_type']=='Assign':
g=1
obj.Assignment(i['targets'],i['value'])
elif i['_type']=='AugAssign':
g=1
s=obj.operator(i['op'])
obj.AugAssign(i['target'],s,i['value'])
elif i['_type']=='Expr':
obj.exp(i['value'])
if len(orelse)>0:
m=1
self.c+=1
self.edges[p].append(self.c)
#if self.c+1 not in self.edges[self.c]:
# self.edges[self.c].append(self.c+1)
f=0
for j in orelse:
if j['_type']=='If':
if not f:
self.c-=1
else:
print(self.c)
self.edges[c].append(self.c+1)
obj.condition(j['body'],j['orelse'],j['test'])
#print(self.V)
elif j['_type']=='While':
f=1
obj.whileLoop(j['body'],j['test'])
elif j['_type']=='Assign':
f=1
obj.Assignment(j['targets'],j['value'])
elif j['_type']=='AugAssign':
f=1
s=obj.operator(j['op'])
obj.AugAssign(j['target'],s,j['value'])
elif j['_type']=='Expr':
obj.exp(j['value'])
if n!=-1 and self.c+1 not in self.edges[n]:
self.edges[n].append(self.c+1)
if not m:
return q
else:
return -1
#Main function
if __name__=="__main__":
import json
from graphviz import Digraph
with open('sample.json', 'r') as openfile:
ast=json.load(openfile)
data=ast['body']
V=dict()
c=0
edges=[[] for i in range(30)]
gen=[[] for i in range(30)]
kill=[[] for i in range(30)]
obj=A(V,c,edges,gen,kill)
f=0
for i in data:
if i['_type']=='Assign':
if f:
obj.c+=1
for j in range(obj.c):
if len(edges[j])==0:
obj.edges[j].append(obj.c)
f=0
obj.Assignment(i['targets'],i['value'])
elif i['_type']=='AugAssign':
if f:
obj.c+=1
for j in range(obj.c):
if len(edges[j])==0:
obj.edges[j].append(obj.c)
f=0
s=obj.operator(i['op'])
obj.AugAssign(i['target'],s,i['value'])
elif i['_type']=='While':
f=0
k=obj.whileLoop(i['body'],i['test'])
obj.c+=1
obj.edges[k].append(obj.c)
#obj.edges[k].append(obj.c+1)
#print(k,obj.c)
elif i['_type']=='Expr':
if f:
obj.c+=1
for j in range(obj.c):
if len(edges[j])==0:
obj.edges[j].append(obj.c)
f=0
obj.exp(i['value'])
elif i['_type']=='If':
f=1
q=obj.condition(i['body'],i['orelse'],i['test'])
if q!=-1 and obj.c+1 not in obj.edges[q]:
obj.edges[q].append(obj.c+1)
obj.edges=[list(set(i)) for i in obj.edges]
for i in range(len(obj.gen)):
p=set(obj.gen[i])
obj.gen[i]=list(p)
for i in range(len(obj.kill)):
p=set(obj.kill[i])
obj.kill[i]=list(p)
OUT=[[] for i in range(30)]
IN=[[] for i in range(30)]
change=True
while(change):
change=False
for i in range(obj.c,-1,-1):
OLDIN=IN[i]
OLDOUT=OUT[i]
p=list()
for j in obj.edges[i]:
#print(j)
if len(IN[j])>0:
p.extend(IN[j])
OUT[i]=list(set(p))
p=list(set(set(OUT[i])-set(kill[i])|set(gen[i])))
IN[i]=p
if OLDIN!=IN[i] or OLDOUT!=OUT[i]:
change=True
D=dict()
m=0
for i in obj.V:
p=V[i].split("\n")
loc_gen=set()
for j in range(len(p)-2,-1,-1):
res=p[j].find('=')
if res!=-1:
q=p[j][0:res]
if q not in OUT[m] and q not in loc_gen:
continue
else:
if m not in D:
D[m]=p[j]+"\n"
else:
D[m]+=p[j]+"\n"
else:
if m not in D:
D[m]=p[j]+"\n"
else:
D[m]+=p[j]+"\n"
for k in gen[m]:
if p[j].find(k)!=-1:
loc_gen.add(k)
if res!=-1 and q in loc_gen:
loc_gen.remove(q)
m+=1
for i in D:
p=D[i].split("\n")
p=p[::-1]
D[i]='\n'.join(p)
dot = Digraph(comment='CFG')
m='A'
for i in D:
dot.node(m,D[i])
m=chr(ord(m)+1)
m='A'
#print(obj.c)
for i in range(len(D)):
p=set(edges[i])
edges[i]=list(p)
for j in range(len(edges[i])):
dot.edge(m,chr(edges[i][j]+65))
m=chr(ord(m)+1)
dot.render('output', view=True)