floraachy/Nasal-Interpreter
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add trace back info

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This commit is contained in:
Li Haokun
2021-07-16 17:18:13 +08:00
committed by GitHub
parent 9da029b8fe
commit 9fe7a86a3b
7 changed files with 147 additions and 121 deletions
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nasal_import.h
+21 -17
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@@ -4,21 +4,22 @@
class nasal_import
{
private:
int error;
nasal_lexer import_lex;
nasal_parse import_par;
nasal_ast import_ast;
int error;
nasal_lexer import_lex;
nasal_parse import_par;
nasal_ast import_ast;
std::vector<std::string> filename_table;
void die(std::string&,const char*);
bool check_import(nasal_ast&);
bool check_exist(std::string&);
void linker(nasal_ast&,nasal_ast&&);
void die(std::string&,const char*);
bool check_import(nasal_ast&);
bool check_exist(std::string&);
void linker(nasal_ast&,nasal_ast&&);
nasal_ast file_import(nasal_ast&);
nasal_ast load(nasal_ast&);
nasal_ast load(nasal_ast&,uint16_t);
public:
int get_error(){return error;}
void link(nasal_ast&);
int get_error(){return error;}
void link(nasal_ast&,std::string&);
nasal_ast& get_root(){return import_ast;}
std::vector<std::string>& get_file(){return filename_table;}
};
void nasal_import::die(std::string& filename,const char* error_stage)
@@ -91,7 +92,6 @@ nasal_ast nasal_import::file_import(nasal_ast& node)
return tmp;
}
import_par.set_toklist(import_lex.get_token_list());
import_lex.get_token_list().clear();
import_par.main_process();
if(import_par.get_error())
{
@@ -99,30 +99,34 @@ nasal_ast nasal_import::file_import(nasal_ast& node)
return tmp;
}
tmp=std::move(import_par.get_root());
import_par.get_root().clear();
// check if tmp has 'import'
return load(tmp);
return load(tmp,filename_table.size()-1);
}
nasal_ast nasal_import::load(nasal_ast& root)
nasal_ast nasal_import::load(nasal_ast& root,uint16_t fileindex)
{
nasal_ast new_root(0,ast_root);
for(auto& i:root.get_children())
if(check_import(i))
linker(new_root,file_import(i));
// add root to the back of new_root
nasal_ast file_head(0,ast_file);
file_head.set_num(fileindex);
new_root.add_child(std::move(file_head));
linker(new_root,std::move(root));
return new_root;
}
void nasal_import::link(nasal_ast& root)
void nasal_import::link(nasal_ast& root,std::string& self)
{
// initializing
error=0;
filename_table.clear();
filename_table.push_back(self);
import_ast.clear();
// scan root and import files,then generate a new ast and return to import_ast
import_ast=load(root);
// the main file's index is 0
import_ast=load(root,0);
return;
}