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# -*- coding: UTF-8 -*-
"""
The core of an exercise tester in the spirit of the Ganesh project
Copyright (C) 1998-2003 Rogério Reis & Nelma Moreira {rvr,nam}@ncc.up.pt
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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
@author: Rogério Reis & Nelma Moreira {rvr,nam}@ncc.up.pt
"""
from constants import *
from vpu import Vpu, ReadProgram, CantRead, isNumber, isRegName
import constants, vpu
# constants need to be imported twice because of -v option...
import sys, stat, posix, string
__version = "$Id: vpu_tutor.py,v 1.29 2006-11-13 11:11:59 rvr Exp $"
class Vpu_Tutor(Vpu):
def doIt(self):
try:
input = open(self.tutorFile,'r')
except IOError:
CantRead(self.tutorFile)
self.ggrade = 0
last, loaded, run = 'ready',0,0
tutor = []
# remove commands and create a tutor command list
while 1:
line = input.readline()
if not line: break
if len(line) == 1: continue
line = string.split(line)
if line:
if line[0][0] == '#':
continue
flag = 1
for i in range(len(line)):
if line[i][0] != '#' and flag:
continue
else:
flag = 0
del(line[i])
tutor.append(line)
# now lets parse and execute the tutor file
for line in tutor:
if not line:
continue
if line[0] == 'load':
if last != 'ready':
sys.stderr.write("error: load out of order\n")
sys.exit(1)
last = 'load'
run = 0
elif line[0] == 'initial':
if last != 'ready' or not loaded:
sys.stderr.write("error: initial out of order\n")
sys.exit(1)
last = line[0]
run = 0
labelReq1 = {}
labelReq2 = {}
for arg in line[1:]:
if ':' in arg:
a = string.split(arg,':')
labelReq1[a[0]] = ParseValuesM(a[1])
elif ';' in arg:
a = string.split(arg,';')
labelReq2[a[0]] = int(a[1])
else:
sys.stderr.write("error: bad arguments for initial\n")
sys.exit(1)
elif line[0] == 'init':
if last == 'load':
sys.stdout.write("error: Not testing the initial set of values\n")
sys.exit(1)
elif not loaded:
sys.stdout.write("error: program not loaded\n")
sys.exit(1)
else:
self.load(program)
for arg in line[1:]:
foo = string.split(arg,':')
if isRegName(foo[0]):
bar = int(foo[0][1:])
self.reg[bar] = int(foo[1])
else:
self.VerifyLabelM(foo[0])
Values = ParseValuesM(foo[1])
# lets verify if the values fit
# in the originally allocated space
if len(Values) > self.labelms[foo[0]]:
self.reserveMemory(foo[0],len(Values))
add = self.labelm[foo[0]]
for i in Values:
self.RAM[add] = i
add = add + 1
last = line[0]
run = 0
elif line[0] == 'exec':
if not loaded:
sys.stdout.write("error: program not loaded\n")
sys.exit(1)
else:
if len(line) == 1:
target = ""
else:
target = line[1]
run = 1
last = line[0]
elif line[0] == 'final' or line[0] == '+final':
last = line[0]
if not run:
sys.stdout.write("error: need to run the program before testing the results\n")
sys.exit(1)
RegVal = {}
LabelReq1 = {}
for arg in line[1:]:
foo = string.split(arg,':')
if isRegName(foo[0]):
RegVal[int(foo[0][1:])] = int(foo[1])
else:
LabelReq1[foo[0]] = ParseValuesM(foo[1])
elif line[0] == 'end':
if self.NoErrorsp():
sys.stdout.write("%d OK\n"%self.ggrade)
else:
sys.stdout.write("%d %s"%(self.ggrade,self.ErrMessage))
sys.exit(0)
elif line[0] == 'value':
grade = int(line[1])
if not last in ['load','initial','exec','final','+final']:
sys.stderr.write("error: value out of order\n")
sys.exit(1)
elif last == 'load':
program = ReadProgram(self.programFile)
try:
self.load(program)
except vpuError, obj:
self.respond(obj.message,obj.line)
loaded = 1
self.ggrade = self.ggrade + grade
last = 'ready'
elif last == 'initial':
for l in labelReq1.keys():
self.VerifyLabel1(l,labelReq1[l])
for l in labelReq2.keys():
self.VerifyLabel2(l,labelReq2[l])
self.ggrade = self.ggrade + grade
elif last == 'exec':
if target == "":
try:
self.run()
except EndOfProgram:
self.ggrade = self.ggrade + grade
except ArithmeticError:
self.respond(sys.exc_type)
except vpuError, obj:
self.respond(obj.message)
except: # this should NEVER happen!
print sys.exc_type, sys.exc_value
elif last == 'final':
for r in RegVal.keys():
self.VerifyReg(r,RegVal[r])
for r in LabelReq1.keys():
self.VerifyLabel1(r,LabelReq1[r])
self.ggrade = self.ggrade + grade
elif last == '+final':
nErrors = 0
for r in RegVal.keys():
nErrors = nErrors + self.VerifyReg(r,RegVal[r],True)
for r in LabelReq1.keys():
nErrors = nErrors + self.VerifyLabel1(r,LabelReq1[r],True)
if not nErrors:
self.ggrade = self.ggrade + grade
def VerifyReg(self, r, value, NotVital=False):
if self.reg[r] != value:
if NotVital:
self.SetErrMsg("Register R%d does not have the right value\n"%r)
return 1
else:
sys.stdout.write("%d Register R%d does not have the right value\n"%(self.ggrade,r))
sys.exit(0)
else:
return 0
def VerifyLabelM(self,label):
if not label in self.labelm.keys():
sys.stdout.write("%d Label %s not created\n"%(self.ggrade,label))
sys.exit(0)
def VerifyLabel1(self, label, values, NotVital=False):
self.VerifyLabelM(label)
add = self.labelm[label]
for v in values:
try: Wrong = self.RAM[add] != v
except IndexError:
Wrong = True
if Wrong:
if NotVital:
self.SetErrMsg("Label %s does not have the right value\n"%label)
return 1
else:
sys.stdout.write("%d Label %s does not have the right value\n"%(self.ggrade,label))
sys.exit(0)
add = add + 1
return 0
def VerifyLabel2(self, label, size):
self.VerifyLabelM(label)
if self.labelms[label] != size:
sys.stdout.write("%d Label %s does not have the right size assigned\n"%(self.ggrade,label))
sys.exit(0)
def NoErrorsp(self):
try:
foo = self.ErrMessage
except AttributeError:
return True
return False
def SetErrMsg(self,msg):
try:
foo = self.ErrMessage
except AttributeError:
self.ErrMessage = msg
def respond(self,message,line=0):
if line != 0:
sys.stdout.write("%d %s in line %d\n"%(self.ggrade,message,line))
sys.exit(0)
else:
sys.stdout.write("%d %s\n"%(self.ggrade,message))
sys.exit(0)
def ParseValuesM(str):
l1 = string.split(str,',')
list = []
for i in l1:
list.append(int(i))
return list
def readable(path):
try:
mode = posix.stat(path)[stat.ST_MODE]
except OSError: # File doesn't exist
sys.stderr.write("%s not found\n"%path)
sys.exit(1)
if not stat.S_ISREG(mode): # or it's not readable
sys.stderr.write("%s not readable\n"%path)
sys.exit(1)
# just to use inside pdb
def test(a,b):
vPu = Vpu_Tutor()
vPu.tutorFile = a
vPu.programFile = b
vPu.doIt()
if __name__ == '__main__':
if (len(sys.argv) == 2 and sys.argv[1] == "-v"):
sys.stderr.write("%s\n"%__version)
sys.stderr.write("%s\n"%vpu.__version)
sys.stderr.write("%s\n"%constants.__version)
sys.exit(0)
elif (len(sys.argv) != 3):
sys.stderr.write("Usage: apoo-tutor tutor-file apoo-program\n")
sys.exit(1)
for i in [sys.argv[1],sys.argv[2]]:
readable(i)
vpu = Vpu_Tutor()
vpu.tutorFile = sys.argv[1]
vpu.programFile = sys.argv[2]
vpu.doIt()
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