# Character constant 'c' or L'c'
t_CCONST = r'(L)?\'([^\\\n]|(\\.))*?\''
# Comments
def t_comment_1(t):
r' /\*(.|\n)*?\*/'
t.lineno += t.value.count('\n')
def t_comment_2(t):
r' //.*\n'
t.lineno += 1
# Preprocessor directive (ignored)
def t_preprocessor(t):
r'\#(.)*?\n'
t.lineno += 1
def t_error(t):
print "Illegal character %s" % repr(t.value[0])
t.skip(1)
lexer = lex.lex(optimize=1)
if __name__ == "__main__":
lex.runmain(lexer)
r'\n+'
t.lexer.lineno += len(t.value)
# A string containing ignored characters (spaces and tabs)
t_ignore = ' \t'
# Error handling rule
def t_error(t):
print "BoxesLexerError: Illegal character '%s'" % t.value[0]
t.lexer.skip(1)
exit(1)
lexer = lex.lex()
if __name__ == "__main__":
lex.runmain(lexer)
#LEXER SOLO
# Build the lexer
#lexer = lex.lex()
# Test it out
#data = '''
#program hola_2;
#var hola_1,hola_2:float;
#hola_3,hola_4:int;
#{
# prueba_prueba=10;
# if(7>9){
# prueba_prueba2=5;{{{{{{
# }else{
r'/\*(.|\n)*?\*/'
t.lexer.lineno += t.value.count('\n')
# Preprocessor directive (ignored)
def t_preprocessor(self, t):
r'\#(.)*?\n'
t.lexer.lineno += 1
def t_error(self, t):
print("Illegal character %s" % repr(t.value[0]))
t.lexer.skip(1)
# use class method, supply build 使用类的方法需要解决的问题
def build(self, **kwargs):
self.lexer = lex.lex(module=self, **kwargs)
def test(self, data):
self.lexer.input(data)
while True:
tok = lexer.token()
if not tok: break
print tok
if __name__ == "__main__":
# a simple unit test 一个简单的单元测试
cm = {}
mylex = clex(cm)
#mylex.build(lextab="clextab")
lex.runmain(mylex.lexer)
print(cm)
# Build the lexer
lexer = lex.lex()
###############################################################################
if __name__ == '__main__':
import sys
import os
if len(sys.argv) == 1:
print "Just handle one simple verilog netlist in os.get_cwd() dir"
while (1):
fname = raw_input("plz enter the file name:")
console = sys.stdout
lexerlog = open(os.path.splitext(fname)[0] + "_lexer.log", 'w')
sys.stdout = lexerlog
with open(fname, 'r') as fobj:
all_lines = fobj.read()
lex.runmain(lexer, all_lines)
sys.stdout = console
lexerlog.close()
print "Note: %s_lexer.log has been generated succfully " % fname
#elif sys.argv[1]=='many':
# parent_dir=os.getcwd()
# while(1):
# tmp1=raw_input('Plz enter the verilog source sub dir:')
# input_file_dir=parent_dir+"\\test_input_netlist\\"+tmp1
# if os.path.exists(input_file_dir)==False:
# print 'Error : this dir dont exists!'
# continue
# else:
# break
# for eachFile in os.listdir(input_file_dir):
# print eachFile
# Build the lexer
lexer = lex.lex()
###############################################################################
if __name__=='__main__':
import sys
import os
if len(sys.argv)==1:
print "Just handle one simple verilog netlist in os.get_cwd() dir"
while(1):
fname=raw_input("plz enter the file name:")
console = sys.stdout
lexerlog = open(os.path.splitext(fname)[0]+"_lexer.log",'w')
sys.stdout = lexerlog
with open(fname,'r') as fobj:
all_lines=fobj.read()
lex.runmain(lexer,all_lines)
sys.stdout = console
lexerlog.close()
print "Note: %s_lexer.log has been generated succfully " % fname
#elif sys.argv[1]=='many':
# parent_dir=os.getcwd()
# while(1):
# tmp1=raw_input('Plz enter the verilog source sub dir:')
# input_file_dir=parent_dir+"\\test_input_netlist\\"+tmp1
# if os.path.exists(input_file_dir)==False:
# print 'Error : this dir dont exists!'
# continue
# else:
# break
# for eachFile in os.listdir(input_file_dir):
# print eachFile
