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Main.py
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Main.py
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import sys
import traceback
import time
import re
from PyQt5.QtCore import QThread, pyqtSignal
from PyQt5.QtGui import QTextCursor, QColor, QTextCharFormat
from PyQt5.QtWidgets import QMainWindow, QApplication, QWidget, QFileDialog, qApp, QLabel, QMessageBox, QAction
from CompilerUi.Highlighter import Pl0Highlighter
from Pl0compiler import Error
from Pl0compiler.Interpreter import Interpreter
from Pl0compiler.Praser import Praser, SymbolTable
from Pl0compiler.Scanner import Scanner
from CompilerUi.about import Ui_Form
from CompilerUi.mainWindow import Ui_MainWindow
from CompilerUi.pcodeRun import Ui_runCodeForm
class MainWindow(QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.runcodeForm = RunCodeForm()
self.about = About()
self.setupUi(self)
self.tableSelectHorizontalSlider.setRange(0, 2)
self.highlighter = Pl0Highlighter(self.sourceCodePlainTextEdit.document())
self.filePath = None
self.compileFin = False
self.table = []
self.pcodeList = None
self.permanent = QLabel()
self.permanent.setText("line 1 col 0")
self.statusbar.addPermanentWidget(self.permanent)
self.tableSelectHorizontalSlider.setVisible(False)
self.lastTag = -1
def menubarTriggle(self, action):
if self.actionNewFile == action:
self.newFile()
if self.actionOpenFile == action:
self.openFile()
elif self.actionSaveFile == action:
self.saveFile()
elif self.actionSaveAs == action:
self.saveAs()
elif self.actionExit == action:
qApp.quit()
elif self.actionAbout == action:
self.about.show()
elif self.actionSavePcode == action:
self.savePcode()
def newFile(self):
self.filePath = None
self.lastTag = -1
self.compileFin = False
self.pcodePlainTextEdit.clear()
self.tableTextEdit.clear()
self.setWindowTitle("Pl0文法编译器 untitled")
self.sourceCodePlainTextEdit.clear()
self.ErrortextBrowser.clear()
def openFile(self):
fileName = QFileDialog.getOpenFileName(self, "打开文件", "",
"Text files(*.txt);;Pl0 files(*.pl);;Python files(*.py)")
if fileName != ('', ''):
try:
with open(fileName[0], 'r', encoding="utf-8") as fp:
src = fp.read()
except:
with open(fileName[0], 'r', encoding="gbk") as fp:
src = fp.read()
finally:
self.filePath = fileName[0]
self.lastTag = -1
self.compileFin = False
self.setWindowTitle("Pl0文法编译器 " + self.filePath)
self.sourceCodePlainTextEdit.document().clear()
self.sourceCodePlainTextEdit.setPlainText(src)
self.ErrortextBrowser.clear()
self.pcodePlainTextEdit.clear()
self.tableTextEdit.clear()
def saveFile(self):
if self.filePath == None:
filename = QFileDialog.getSaveFileName(self, '保存文件', "",
"Text files(*.txt);;Pl0 files(*.pl);;Python files(*.py)")
if filename != ('', ''):
# if filename[1][0]=="T" and filename[0][-4:-1]!=".txt": #this is for linux
# arg=".txt"
# elif filename[1]=="Pl0 files(*.pl)" and filename[0][-3:-1]!=".pl":
# arg=".pl"
# elif filename[1]=="Python files(*.py)" and filename[0][-3:-1]!=".py":
# arg=".py"
# else:
# arg=""
# self.filePath = filename[0]+arg
self.filePath = filename[0]
self.setWindowTitle("Pl0文法编译器 " + self.filePath)
else:
return
with open(self.filePath, 'w') as f:
my_text = self.sourceCodePlainTextEdit.toPlainText()
f.write(my_text)
self.statusbar.showMessage("保存成功")
def saveAs(self):
filename = QFileDialog.getSaveFileName(self, '保存文件', "",
"Text files(*.txt);;Pl0 files(*.pl);;Python files(*.py)")
if filename == ('', ''):
return
with open(filename[0], 'w') as f:
my_text = self.sourceCodePlainTextEdit.toPlainText()
f.write(my_text)
self.statusbar.showMessage("保存成功")
def updateColLine(self):
self.permanent.setText("line " + str(self.sourceCodePlainTextEdit.textCursor().blockNumber() + 1) + " " + str(
self.sourceCodePlainTextEdit.textCursor().columnNumber()))
def savePcode(self):
filename = QFileDialog.getSaveFileName(self, '保存文件', "",
"Text files(*.txt);;Pcode files(*.pcode);;Python files(*.py)")
if filename == ('', ''):
return
with open(filename[0], 'w') as f:
my_text = self.pcodePlainTextEdit.toPlainText()
f.write(my_text)
self.statusbar.showMessage("保存成功")
def runPcode(self):
try:
if not self.compileFin:
QMessageBox.warning(self, "警告",
"编译未完成,请先编译")
else:
self.runcodeForm.setPcodeList(self.pcodeList)
self.runcodeForm.runInterper()
self.runcodeForm.show()
except:
print(traceback.format_exc())
def changeTable(self, pos):
self.tableTextEdit.clear()
self.tableTextEdit.insertHtml(self.table[pos])
def showTable(self):
try:
if not self.compileFin:
QMessageBox.warning(self, "警告",
"编译未完成,请先编译")
else:
self.tableTextEdit.clear()
if len(self.table) > 1:
self.tableSelectHorizontalSlider.setRange(0, len(self.table) - 1)
self.tableSelectHorizontalSlider.setVisible(True)
self.tableSelectHorizontalSlider.setValue(0)
self.tableSelectHorizontalSlider.setFocus(True)
self.tableTextEdit.insertHtml(self.table[0])
except:
print(traceback.format_exc())
def showError(self, url):
line = int(url.fileName()[:-1])
if self.lastTag != -1:
self.highlightCurrentLine(self.lastTag, 0)
self.highlightCurrentLine(line, 1)
self.lastTag = line
def highlightCurrentLine(self, line, status):
try:
selection = self.sourceCodePlainTextEdit.document().findBlockByLineNumber(line)
cursor = self.sourceCodePlainTextEdit.textCursor()
line = selection.text() + " "
cursor.setPosition(selection.position())
cursor.movePosition(QTextCursor.EndOfLine, QTextCursor.KeepAnchor)
formats = QTextCharFormat()
if status:
formats.setBackground(QColor('red'))
cursor.removeSelectedText()
cursor.insertText(line, formats)
except:
print(traceback.format_exc())
def producePcode(self):
##
self.compileFin = False
self.ErrortextBrowser.clear()
self.pcodePlainTextEdit.clear()
self.tableTextEdit.clear()
self.tableSelectHorizontalSlider.setValue(0)
self.tableSelectHorizontalSlider.setVisible(False)
if self.lastTag != -1:
self.highlightCurrentLine(self.lastTag, 0)
s = Scanner(content=WrapperQPlianText(self.sourceCodePlainTextEdit))
praser = Praser(s, SymbolTable(), Interpreter())
if praser.prase():
self.statusbar.showMessage("编译成功")
self.compileFin = True
self.pcodeList = praser.interperter.pcodeList
text = ""
for i in praser.interperter.pcodeList:
text += i.toString() + "\n"
self.pcodePlainTextEdit.setPlainText(text)
self.table = praser.table.tableshow
else:
self.statusbar.showMessage("编译中出现错误")
self.ErrortextBrowser.insertHtml(Error.Error.errinfo)
class WrapperQPlianText:
def __init__(self, plainText):
self.plainText = plainText
self.pos = 0
def readline(self):
eof = 0
textCursor = self.plainText.textCursor()
textCursor.setPosition(self.pos)
textCursor.movePosition(QTextCursor.Down, QTextCursor.KeepAnchor)
endPos = textCursor.position()
if self.pos == endPos:
textCursor.movePosition(QTextCursor.EndOfLine, QTextCursor.KeepAnchor)
eof = 1
endPos = textCursor.position()
line = textCursor.selectedText()
self.pos = endPos
line = line.encode(encoding='ascii', errors='ignore').decode("ascii")
if not eof:
line += "\n"
elif line != "":
line += "\n"
return line
class InterpreterThread(QThread, Interpreter):
updateSingnal = pyqtSignal(int, str)
def __init__(self):
super(InterpreterThread, self).__init__()
self.hasInput = False
self.inputBuffer = ""
def setPcodeList(self, pcodeList):
self.pcodeList = pcodeList
def readNum(self):
self.updateSingnal.emit(0, "请输入一个数字")
while not self.hasInput:
time.sleep(0.3)
while 1:
try:
a = self.inputBuffer
self.hasInput = False
self.inputBuffer = ""
a = int(a)
return a
except:
pass
def errorshow(self, errormsg):
self.updateSingnal.emit(1, errormsg)
def printInstruct(self, msg):
self.updateSingnal.emit(0, msg)
def printRun(self, num, status):
if status == 1:
self.updateSingnal.emit(0, "\n")
else:
self.updateSingnal.emit(0, str(num) + " ")
def run(self):
self.interperter(self.pcodeList)
class RunCodeForm(QWidget, Ui_runCodeForm):
def __init__(self, parent=None):
super(RunCodeForm, self).__init__(parent)
self.setupUi(self)
self.interpre = None
exitAction = QAction(self)
exitAction.setShortcut('ESC')
exitAction.triggered.connect(self.close)
self.addAction(exitAction)
def setPcodeList(self, pcodeList):
self.interpre = InterpreterThread()
self.interpre.setPcodeList(pcodeList)
def runInterper(self):
self.errorMonitortextEdit.clear()
self.runMonitporTextEdit.clear()
self.inputLineEdit.setFocus(True)
self.interpre.updateSingnal.connect(self.updateUI)
self.interpre.start()
def updateUI(self, status, msg):
if status == 1:
self.errorMonitortextEdit.append(msg)
else:
self.runMonitporTextEdit.append(msg)
self.runMonitporTextEdit.moveCursor(QTextCursor.StartOfLine)
self.runMonitporTextEdit.textCursor().deletePreviousChar()
self.runMonitporTextEdit.moveCursor(QTextCursor.EndOfLine)
def sendData(self):
if self.interpre.hasInput:
QMessageBox.warning(self, "警告",
"数据已发送,请稍等后重试")
elif self.inputLineEdit.text() != "":
self.interpre.inputBuffer = self.inputLineEdit.text()
self.inputLineEdit.clear()
self.interpre.hasInput = True
class About(QWidget, Ui_Form):
def __init__(self, parent=None):
super(About, self).__init__(parent)
self.setupUi(self)
def closeAbout(self):
self.close()
if __name__ == "__main__":
app = QApplication(sys.argv)
mainWindow = MainWindow()
mainWindow.show()
sys.exit(app.exec_())