def grammar(self): # 展示语法分析中可以计算的集合和表
syntax = Syntax()
syntax.syntax_init('./help/syntax.json')
syntax.get_follow()
self.grammar_window = QDialog()
ui = syntax_grammar.Ui_dialog()
init_win(self.grammar_window, ui)
set_grammar_tbl(ui, syntax)
def callback(res):
lexical = Lexical()
lexical.get_dfa('./help/dfa.json') # 读取DFA转换表
lexical_res = lexical.lexical_run(str(res).replace(
'\r\n', '\n')) # 得到词法分析的token序列
tokens, nums_attr = [], []
if not lexical_res[0] and not lexical_res[1]:
QMessageBox.warning(self, '输入无效', '请输入有效程序文本')
return
for idx in range(len(
lexical_res[0])): # item[1]为种别码,item[3]为行号,item[2]为属性值
item = lexical_res[0][idx]
if 'comment' not in item[1]:
tokens.append(item[1])
nums_attr.append((item[3], item[2]))
syntax = Syntax()
syntax.syntax_init('./help/syntax.json')
syntax_lst, syntax_err = syntax.syntax_run(tokens, nums_attr)
self.syntax_window = QDialog()
ui = syntax_res.Ui_Dialog()
init_win(self.syntax_window, ui)
set_syntax_win(ui, syntax, syntax_lst, lexical_res[1], syntax_err)
class MainWindow(QMainWindow):
# noinspection PyArgumentList
def __init__(self, editor):
super().__init__()
self.editor = editor
self.setFixedSize(width, height)
self.setWindowTitle('编译器@zjr')
self.setWindowIcon(QIcon('help/system.ico'))
self.setCentralWidget(editor)
self.file_path = None # 打开的文件的目录
self.menu_bar = QMenuBar(self) # 菜单栏
self.file_menu = QMenu('文件', self.menu_bar)
self.open_file_action = QAction('打开',
shortcut=QKeySequence.Open,
triggered=self.open_file)
self.save_file_action = QAction('保存',
shortcut=QKeySequence.Save,
triggered=self.save_file)
self.save_as_action = QAction('另存为',
shortcut='ctrl+shift+s',
triggered=self.save_as_file)
self.lexical_menu = QMenu('词法分析', self.menu_bar)
self.lexical_run_action = QAction('运行',
shortcut='ctrl+f1',
triggered=self.lexical_run)
self.dfa_action = QAction('DFA转换表', triggered=self.dfa)
self.nfa_action = QAction('NFA转换表', triggered=self.nfa)
self.syntax_menu = QMenu('语法分析', self.menu_bar)
self.syntax_run_action = QAction('运行',
shortcut='ctrl+f2',
triggered=self.syntax_run)
self.grammar_action = QAction('语法信息', triggered=self.grammar)
self.semantic_menu = QMenu('语义分析', self.menu_bar)
self.semantic_run_action = QAction('运行',
shortcut='ctrl+f3',
triggered=self.semantic_run)
self.semantic_info_action = QAction('语义信息',
triggered=self.semantic_info)
self.about_menu = QMenu('关于', self.menu_bar)
self.more_action = QAction('待实现', triggered=self.more)
self.init_menu_bar()
self.lexical_window = None
self.dfa_window = None
self.nfa_window = None
self.syntax_window = None
self.grammar_window = None
self.semantic_win = None # 语义分析结果窗口
self.semantic_info_win = None # 语义信息窗口
self.syntax = None
def init_menu_bar(self):
self.menu_bar.setGeometry(0, 0, width, bar_height)
for menu_bar in [
self.file_menu, self.lexical_menu, self.syntax_menu,
self.semantic_menu, self.about_menu
]:
self.menu_bar.addMenu(menu_bar)
self.file_menu.addAction(self.open_file_action)
self.file_menu.addAction(self.save_file_action)
self.file_menu.addAction(self.save_as_action)
self.lexical_menu.addAction(self.lexical_run_action)
self.lexical_menu.addAction(self.dfa_action)
self.lexical_menu.addAction(self.nfa_action)
self.syntax_menu.addAction(self.syntax_run_action)
self.syntax_menu.addAction(self.grammar_action)
self.semantic_menu.addAction(self.semantic_run_action)
self.semantic_menu.addAction(self.semantic_info_action)
self.about_menu.addAction(self.more_action)
def open_file(self): # 打开文件
self.file_path = QFileDialog.getOpenFileName(self, '',
os.getcwd() + '/input',
'C(*.c);;Txt(*.txt)')[0]
if self.file_path:
with open(self.file_path, 'r', encoding='utf-8') as f:
self.editor.set_text(f.read())
def save_file(self): # 保存文件
def callback(res):
if self.file_path:
with open(self.file_path, 'w', encoding='utf-8',
newline='') as f:
f.write(res)
else:
self.save_as_file()
self.editor.get_text(callback)
def save_as_file(self): # 文件另存为
def callback(res):
if self.file_path:
with open(self.file_path, 'w', encoding='utf-8',
newline='') as f:
f.write(res)
self.file_path = QFileDialog.getSaveFileName(self, '',
os.getcwd() + '/input',
'C(*.c);;Txt(*.txt)')[0]
self.editor.get_text(callback)
def lexical_run(self): # 运行词法分析
def callback(res):
lexical = Lexical()
lexical.get_dfa('./help/dfa.json')
res = lexical.lexical_run(str(res).replace(
'\r\n', '\n')) # 词法分析的token序列，要将window换行符'\r\n'转换
self.lexical_window = LexicalWindow(res)
self.lexical_window.show()
self.editor.get_text(callback)
def dfa(self): # dfa转换表
lexical = Lexical()
lexical.get_dfa('./help/dfa.json')
self.dfa_window = DFAWindow(lexical.get_dfa_table())
self.dfa_window.show()
def nfa(self): # nfa转换表
path = QFileDialog.getOpenFileName(self, '',
os.getcwd() + '/help/nfa.json',
'Json(*.json)')[0]
if path:
lexical = Lexical()
lexical.get_nfa(path)
self.nfa_window = NFAWindow(lexical.nfa, lexical.nfa2dfa())
self.nfa_window.show()
def syntax_run(self): # 运行语法分析
def callback(res):
lexical = Lexical()
lexical.get_dfa('./help/dfa.json') # 读取DFA转换表
lexical_res = lexical.lexical_run(str(res).replace(
'\r\n', '\n')) # 得到词法分析的token序列
tokens, nums_attr = [], []
if not lexical_res[0] and not lexical_res[1]:
QMessageBox.warning(self, '输入无效', '请输入有效程序文本')
return
for idx in range(len(
lexical_res[0])): # item[1]为种别码,item[3]为行号,item[2]为属性值
item = lexical_res[0][idx]
if 'comment' not in item[1]:
tokens.append(item[1])
nums_attr.append((item[3], item[2]))
syntax = Syntax()
syntax.syntax_init('./help/syntax.json')
syntax_lst, syntax_err = syntax.syntax_run(tokens, nums_attr)
self.syntax_window = QDialog()
ui = syntax_res.Ui_Dialog()
init_win(self.syntax_window, ui)
set_syntax_win(ui, syntax, syntax_lst, lexical_res[1], syntax_err)
self.editor.get_text(callback)
def grammar(self): # 展示语法分析中可以计算的集合和表
syntax = Syntax()
syntax.syntax_init('./help/syntax.json')
syntax.get_follow()
self.grammar_window = QDialog()
ui = syntax_grammar.Ui_dialog()
init_win(self.grammar_window, ui)
set_grammar_tbl(ui, syntax)
def semantic_run(self): # 语义分析
def callback(res):
lexical = Lexical()
lexical.get_dfa('./help/dfa.json') # 读取DFA转换表
lexical_res = lexical.lexical_run(str(res).replace(
'\r\n', '\n')) # 得到词法分析的token序列
tokens, nums_attr = [], []
if not lexical_res[0] and not lexical_res[1]:
QMessageBox.warning(self, '输入无效', '请输入有效程序文本')
return
for idx in range(len(
lexical_res[0])): # item[1]为种别码,item[3]为行号,item[2]为属性值
item = lexical_res[0][idx]
if 'comment' not in item[1]:
tokens.append(item[1])
nums_attr.append((item[3], item[2]))
if not self.syntax:
self.syntax = Syntax()
self.syntax.syntax_init('./help/semantic.json')
semantic = Semantic()
res_lst, res_err = semantic.semantic_run(tokens, nums_attr,
self.syntax)
self.semantic_win = QDialog()
ui = semantic_res.Ui_Dialog()
init_win(self.semantic_win, ui)
set_semantic_win(ui, semantic)
self.editor.get_text(callback)
def semantic_info(self): # 语义相关信息
if not self.syntax:
self.syntax = Syntax()
self.syntax.syntax_init('./help/semantic.json')
self.semantic_info_win = QDialog()
ui = semantic_info.Ui_Dialog()
init_win(self.semantic_info_win, ui)
_set_grammar_tbl(ui.grammar_tbl, self.syntax)
def more(self): # 待实现
pass