import sys
from PyQt6.QtWidgets import QApplication, QWidget, QTextEdit, QHBoxLayout
from PyQt6.QtCore import Qt
from quickjs import Context

class MyApp(QWidget):
 def __init__(self):
   super().__init__()
   self.setWindowTitle("QuickMathPad")
   self.setMinimumSize(512, 320)
   self.resize(512, 320)
   
   self.layout = QHBoxLayout()
   self.setLayout(self.layout)
   
   self.text_edit_left = QTextEdit()
   self.layout.addWidget(self.text_edit_left)
   
   self.text_edit_right = QTextEdit()
   self.layout.addWidget(self.text_edit_right)

   self.text_edit_left.textChanged.connect(self.evaluate_expression)

   self.context = Context()
   self.context.eval(open("math.js").read())

 def evaluate_expression(self):
   lines = self.text_edit_left.toPlainText().split('\n')
   results = []
   for line in lines:
     try:
       result = self.context.eval(line)
       results.append(str(result))
     except Exception as e:
       results.append(str(e))
   self.text_edit_right.setText('\n'.join(results))

app = QApplication(sys.argv)
window = MyApp()
window.show()
sys.exit(app.exec())