def click(self):
gram=self.textEdit.toPlainText().split('\n')
sentence=self.lineEdit.text()
grammar=Grammar()
grammar.insert_from_arr(gram)
if grammar.have_left_recursion()==True:
grammar.eliminating_left_recursion()
if grammar.have_left_factor()==True:
grammar.left_factoring()
follow=grammar.follow()
if grammar.is_LL1()==False:
print('不是LL(1)文法')
return
table=grammar.consuct_predictive_parsing_table(follow)
step = grammar.predictive_parsing(table, sentence)
for i in range(len(step)):
self.tableWidget.insertRow(self.tableWidget.rowCount())
for i in range(self.tableWidget.rowCount()):
for j in range(self.tableWidget.columnCount()):
self.tableWidget.setItem(i,j,QTableWidgetItem(step[i][j]))
#把分析过程写入Excel文件中
from pyexcelerate import Workbook
data = step # data is a 2D array
wb = Workbook()
wb.new_sheet("step", data=data)
wb.save("output.xlsx")
