def main():
'''if len(sys.argv) == 1:
print(f"Usage; {sys.argv[0]} [-t | <file_name>]")
return
string = None
if sys.argv[1] == "-t":
string = sys.stdin.read()
else:
with open(sys.argv[1], "r") as f:
string = f.read()
if string is None:
print("Unknown Error, try again")
return'''
#string = sys.stdin.read()
string ="""
int main(){
int x;
x = 5;
print(0, x, false);
return 0;
}
"""
lexer = MyLexer()
token_list = []
for token in lexer.tokenize(string):
token.index = find_column(string, token)
token_list.append(token)
parser = MyParser(token_list)
out = parser.parse(iter(token_list))
if out is None:
print(False)
else:
print(out[1])
def toJson(data):
lexer = MyLexer()
parser = MyParser()
try:
result = parser.parse(lexer.tokenize(data))
new_result = normalize(result)
json_str = json.dumps(new_result, indent=4, ensure_ascii=False)
json_str = json_str.replace('"\\\"', '"').replace('\\""', '"')
return json_str
except TypeError:
return 'Syntax error!'
except EOFError:
return 'EOF error!'
#!/usr/bin/env python
from MyParser import MyParser
if __name__ == '__main__':
parser = MyParser("Books.xml")
parser.parse()
parser.print_books()
def parse(token_list: list) -> tuple:
parser = MyParser(token_list)
return parser.parse(iter(token_list))
def test_PathToFileIsSetAndFoundFileThatIsNotEmpty(self):
parser = MyParser("Books.xml")
parser.parse()
self.assertNotEqual(0, len(parser._books_list))
}
"""
# 词法分析器获得输入
lexer.input(source_str)
# 标记化
# for tok in lexer:
# print(tok)
# 语法分析
# 构建语法分析器
parser = MyParser("AST")
# 语法分析器分析输入
root_node = parser.parse(source_str, lexer=lexer)
# 语义分析器构建符号表和错误检查
my_semantic_analyzer = MySemanticAnalyzer()
my_semantic_analyzer.build_semantic_analyzer(root_node)
if not my_semantic_analyzer.error:
# 代码生成初始化
build_code_generator(root_node)
print(emit_util.result)
# 打印语法树
# root_node.print()
# 打印作用域和符号表信息
# print_scope()
