python写的调试器
生成调试文件的源代码
#!/usr/bin/python
#_*_coding:utf8_*_
import os
import sys
import re
"""行匹配(必须是对应的符号)，例{},(),[]等，head表示前半部分，tail表示后半部分"""
def match(head, tail,fileName):
try:
f = open(fileName)
lineSum = 0
line = f.readline()
while line:
summary = 0
lineSum += 1
s = line
biaoji=0
i = 0
sign = 0
note = 0
while i < len(s):
"""若当前字符为“#”，表示后面文字为注释：无需再进行遍历"""
if s[i] == '#':
break;
"""处理“”“的注释:note表示记录”“”的个数，奇数个时表示后面文字是注释。偶数个时表示后面文字是有效代码"""
if i < len(s)-2 and s[i] == '\"' and s[i+1] == '\"' and s[i+2] == '\"':
note += 1
i = i + 1
if note % 2 == 1:
i += 1
continue
if s[i] == head:
summary += 1
elif s[i] == tail:
summary -= 1
if summary < 0:
sign = 1
print "匹配错误:%d 行 中 %s 与 %s 不匹配，缺少 %s" % (lineSum, head, tail, head)
f.close()
return 0
"""记录最后一个有效字符（去除：空格、换行符、退隔键等）"""
if s[i] != ' ' and s[i] != '\b' and s[i] != '\t' and s[i] != '\n':
biaoji = s[i]
"""当最后一个有效字符为"换行键"的时候，则需要遍历下一行，进行循环判断"""
if i == len(s) - 1 and biaoji == '\\':
line = f.readline()
if line :
lineSum += 1
s = line
i = 0
else:
print "续行符\\下一行无内容"
f.close()
return 0
i += 1
if summary > 0:
print "匹配错误:%d 行 中 %s 与 %s 不匹配，缺少 %s" % (lineSum, head, tail, tail)
f.close()
return 0
line = f.readline()
f.close()
return 1
except Exception, e:
print e
######生成调试文件#########
def ReadSourceFile():
#获得需要调试的文件名并判断是否存在
try :
fileName = raw_input("请输入需要调试的文件名：")
while os.path.isfile(fileName) == False:
fileName = raw_input("请输文件名不存在请重新输入:")
except:
os.system("clear")
print "程序出错！即将退出"
#结束当前的进程后面的代码都不执行
sys.exit()
###调用函数检查语法匹配
if (match("(",")",fileName) ==0):
sys.exit()
if (match("{","}",fileName) ==0):
sys.exit()
if (match("[","]",fileName) ==0):
sys.exit()
#以写模式打开调试文件
writeDebugFile = open ("debugFile.py","w")
writeDebugFile.write("#!/usr/bin/python\n")
writeDebugFile.write("#_*_coding:utf8_*_\n")
writeDebugFile.write("POINTS = [ ]\n")
writeDebugFile.write("ERRPOINT = [ ]\n")
writeDebugFile.write('SRC ="'+fileName+'"\n')
#以读的模式打开系统文件,将系统文件中的信息插入到调试文件中
sysFile=open("sys.py","r")
while True:
sysLine=sysFile.readline()
if (len(sysLine)!=0):
writeDebugFile.write(sysLine) #插入系统文件信息
else :
break
sysFile.close() #关闭系统文件
#以读模式打开源程序
srcFile=file(fileName)
pattern1=re.compile("^[ \t]*#")
pattern2=re.compile("^[ \t]*$")
pat = re.compile("^\t$") #tab匹配
pat1= re.compile("^ $") #匹配空格
pat2= re.compile("^[ \t]*else")#匹配关键字
lineCount = 0 #用于统计源文件的行数
while True:
j=0
lineCount=lineCount + 1
line=srcFile.readline()
if len(line)==0:
break
else :
#删除注释，空行
if pattern1.match(line)==None and pattern2.match(line)==None :
#非空行和注释，则统计空格的个数一个tab等于8个空格
for i in line :
if (pat.match(i)!=None):
j=j+8
elif (pat1.match(i)!=None):
j=j+1
else:
break
#判断本行是不是else，eslf，except，如果是着缩进一个tab
if (pat2.match(line)!=None):
j= j + 8
#将源文件信息和调试文件信息写到调试文件中
blankString=" " * j + 'debug_wait("'+fileName+'",'+str(lineCount)+")"+"\n";
writeDebugFile.write(blankString)
writeDebugFile.write(line)
else :
ERRPOINT.append(lineCount)
srcFile.close()#关闭源程序
writeDebugFile.close()#关闭调试文件
ERRPOINT = []
ReadSourceFile()
os.system("chmod +x debugFile.py")
os.system("python debugFile.py")
系统函数
import re
def canBePoint():
#以读模式打开源程序
srcFile=file(SRC)
pattern1=re.compile("^[ \t]*#")
pattern2=re.compile("^[ \t]*$")
lineCount = 0 #用于统计源文件的行数
while True:
j=0
lineCount=lineCount + 1
line=srcFile.readline()
if len(line)==0:
break
else :
#删除注释，空行
if pattern1.match(line)==None and pattern2.match(line)==None :
pass
else :
ERRPOINT.append(lineCount)
print ERRPOINT
def set_point():
while True:
point = raw_input('请输入断点：--->')
try:
k = int(point)
except ValueError:
print '输入不合法，请重新输入'
continue
if int(point) == 0:
break
else:
flag = 0
for i in range(len(ERRPOINT)):
if int(point) == ERRPOINT[i]:
flag = 1
if flag == 0:
POINTS.append( [SRC,int(point)] )
else:
print '该点不能设为断点！'
continue
def is_break(SRC,line):
for i in range(0,len(POINTS)):
if str(SRC) == POINTS[i][0] and line == POINTS[i][1]:
return True
return False
def debug_wait(SRC,line):
#try:
#global name
#print name
#except NameError:
#print '还没有这个变量'
l = line + 1
if is_break(SRC,l):
print ' '
print '当前为第%d行,下一句为段点' % (line)
while True:
command = raw_input('输入操作--->')
print ' '
try:
k = int(command)
except ValueError:
print '输入不合发,请重新输入!'
continue
if int(command) == 1:
flag = 0
#print 1
nextl = l + 1
global POINTS
for i in range(0,len(POINTS)):
if nextl == POINTS[i][1]:
flag = 1
if flag == 0:
POINTS.append( [SRC,nextl] )
#print POINTS
break
elif int(command) == 2:
print ' 》》程序将执行到下一个断点'
break
elif int(command) == 3:
#print 3
POINTS = [ ]
break
else:
print '没有这项操作,重新输入!'
continue
canBePoint()
print '————————————————————————————————'
print ' *请输入断点* '
print '————————————————————————————————'
set_point()
#print POINTS
print '————————————————————————————————'
print ' *操作提示* '
print ''
print ' 1,单步调试 '
print ' 2,运行到下一个断点 '
print ' 3,运行程序 '
print '————————————————————————————————'
#!/usr/bin/python
#_*_coding:utf8_*_
def p_t():
print '调试6'
print '调试7'
print '调试8'
key = raw_input('SRC--请输入key:')
print '调试1'
print '调试2'
print '调试3'
p_t()
print '调试4'
print '调试5'
if key == 'test':
print '好的'
else:
print '不好'
