162 lines
4.5 KiB
Python
162 lines
4.5 KiB
Python
import os
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import sys
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import dataclasses
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from lex_c import lex_token
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from lex_c import lex
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import lex_c
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from node_declear import dist_node_type_struct
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from node_declear import dist_node_type_union
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from node_declear import dist_node_type_enum
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from node_declear import dist_node_type_typedef
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_NodeTypeTable=[
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"file","vdecl","fdef"
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]
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@dataclasses.dataclass
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class node:
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name:str
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type:str="base"
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token_list:list[lex_token]=dataclasses.field(default_factory=list)
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# 文件节点
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@dataclasses.dataclass
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class node_file(node):
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type:str="file"
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body:list=dataclasses.field(default_factory=list)
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# 变量定义节点
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@dataclasses.dataclass
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class node_variable_def(node):
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type:str="variable_def"
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vvalue=None
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vtype:str="unknown"
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vattr:list[str]=dataclasses.field(default_factory=list)
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# 结构体声明节点
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@dataclasses.dataclass
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class node_struct_decl(node):
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type:str="struct_decl"
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# 结构体定义节点
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@dataclasses.dataclass
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class node_struct_def(node):
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type:str="struct_def"
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body:list[node_variable_def]=dataclasses.field(default_factory=list)
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# 联合体声明节点
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@dataclasses.dataclass
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class node_union_decl(node):
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type:str="union_decl"
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# 联合体定义节点
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@dataclasses.dataclass
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class node_union_def(node):
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type:str="union_def"
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body:list[node_variable_def]=dataclasses.field(default_factory=list)
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# 枚举声明节点
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@dataclasses.dataclass
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class node_enum_decl(node):
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type:str="enum_decl"
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# 枚举定义节点
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@dataclasses.dataclass
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class node_enum_def(node):
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type:str="enum_def"
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body:list[dict]=dataclasses.field(default_factory=list)
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# 函数声明节点
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@dataclasses.dataclass
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class node_func_decl(node):
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type:str="func_decl"
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rettype:str="unknown"
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retattr:list[str]=dataclasses.field(default_factory=list)
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para:list[node_variable_def]=dataclasses.field(default_factory=list)
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#typedef 节点
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@dataclasses.dataclass
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class node_typedef(node):
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type:str="typedef"
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attr:list[str]=dataclasses.field(default_factory=list)
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body:node=None
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# 函数定义节点
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@dataclasses.dataclass
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class node_func_def(node):
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type:str="func_def"
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rettype:str="unknown"
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retattr:list[str]=dataclasses.field(default_factory=list)
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para:list[node_variable_def]=dataclasses.field(default_factory=list)
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body:list[node]=dataclasses.field(default_factory=list)
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# 找到闭合的括号
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def find_close(token_list:list[lex_token],token:tuple[int,int]):
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if token_list[0].token!=token[0]:
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return 0
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num=0
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for index,item in enumerate(token_list):
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if(item.token==token[0]):
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num+=1
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elif(item.token==token[1]):
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num-=1
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if(num==0):
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return index
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raise Exception(f"没有找到闭合的符号 {token[1]}")
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# 找到一个完整的语句
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def find_sentence(token_list:list[lex_token]):
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bracket_flag=False
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index=0
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while index<len(token_list):
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if(token_list[index].token==lex_c.TOKEN("(")):
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bracket_index=find_close(token_list[index:],(lex_c.TOKEN("("),lex_c.TOKEN(")")))
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if(bracket_index>0):
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bracket_flag=True
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index+=bracket_index
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elif(token_list[index].token==lex_c.TOKEN("{")):
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bracket_index=find_close(token_list[index:],(lex_c.TOKEN("{"),lex_c.TOKEN("}")))
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if(bracket_index>0):
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index+=bracket_index
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if(bracket_flag==True):
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return token_list[:index+1]
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elif(token_list[index].token==lex_c.TOKEN(";")):
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return token_list[:index+1]
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index+=1
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raise Exception(f"没有找到完整的语句")
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# 判断一个语句的类型
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def dist_node_type(token_list:list[lex_token]):
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if(token_list[0].token==lex_c.TOKEN_EXTERN):
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token_list=token_list[1:]
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if(token_list[-1].token==lex_c.TOKEN(";")):
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token_list=token_list[:-1]
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if(token_list[0].token==lex_c.TOKEN_STRUCT):
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return dist_node_type_struct(token_list=token_list)
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if(token_list[0].token==lex_c.TOKEN_UNION):
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return dist_node_type_union(token_list=token_list)
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if(token_list[0].token==lex_c.TOKEN_ENUM):
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return dist_node_type_enum(token_list=token_list)
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if(token_list[0].token==lex_c.TOKEN_TYPEDEF):
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return dist_node_type_typedef(token_list=token_list)
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raise Exception(f"无法处理的token类型 {token_list[0]}")
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if __name__ == "__main__":
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file_name="main.c"
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with open(file_name,mode='rb') as f:
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token_list=lex(f.read())
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file=node_file(name=file_name,token_list=token_list,body=[])
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while len(token_list)>0:
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sentence=find_sentence(token_list)
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node_d=dist_node_type(sentence)
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file.body.append(node_d)
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print('找到一个语句：')
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for item in sentence:
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print(f"\t{item}")
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token_list=token_list[len(sentence):] |