floraachy/Nasal-Interpreter
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This commit is contained in:
Valk Richard Li
2020-03-04 10:01:00 +08:00
committed by GitHub
parent 4ccbce36ce
commit 8289716511
2 changed files with 81 additions and 34 deletions
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version2.0/nasal_gc.h
+51 -21
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@@ -35,13 +35,16 @@ class nasal_scalar
void set_string(std::string&);
void vector_push(int);
int vector_pop();
int vector_get_member(int);
void hash_add_new_member(std::string,int);
void hash_delete_member(std::string);
int hash_get_member(std::string);
int get_type();
double get_number();
std::string get_string();
nasal_function& get_function();
int get_type();
double get_number();
std::string get_string();
std::vector<int>& get_vector();
std::map<std::string,int>& get_hash();
nasal_function& get_function();
};
struct gc_unit
@@ -105,22 +108,6 @@ class gc_manager
free_space.clear();
return;
}
void gc_scanner()
{
int memory_size=memory.size();
for(int i=0;i<memory_size;++i)
if((memory[i].refcnt<=0) && (!memory[i].collected))
{
// need more details here
// especially vector and hash
memory[i].set_clear();
free_space.push_back(i);
std::cout<<">> [Gc] collected ";
prt_hex(i);
std::cout<<"."<<std::endl;
}
return;
}
int gc_alloc()
{
if(free_space.empty())
@@ -156,7 +143,35 @@ class gc_manager
void reference_delete(const int place)
{
if(place<memory.size())
{
--memory[place].refcnt;
if(!memory[place].refcnt)
{
memory[place].collected=true;
if(memory[place].elem.get_type()==scalar_vector)
{
int vec_size=memory[place].elem.get_vector().size();
for(int i=0;i<vec_size;++i)
reference_delete(memory[place].elem.get_vector()[i]);
}
else if(memory[place].elem.get_type()==scalar_hash)
{
std::map<std::string,int>::iterator begin_node=memory[place].elem.get_hash().begin();
std::map<std::string,int>::iterator end_node=memory[place].elem.get_hash().end();
for(std::map<std::string,int>::iterator iter=begin_node;iter!=end_node;++iter)
reference_delete(iter->second);
}
else if(memory[place].elem.get_type()==scalar_function)
{
std::list<std::map<std::string,int> >::iterator begin_scope=memory[place].elem.get_function().get_local_scope().begin();
std::list<std::map<std::string,int> >::iterator end_scope=memory[place].elem.get_function().get_local_scope().end();
for(std::list<std::map<std::string,int> >::iterator scope_iter=begin_scope;scope_iter!=end_scope;++scope_iter)
for(std::map<std::string,int>::iterator i=scope_iter->begin();i!=scope_iter->end();++i)
reference_delete(i->second);
}
memory[place].elem.set_clear();
}
}
else
{
std::cout<<">> [Gc] fatal error: unexpected memory place ";
@@ -264,7 +279,8 @@ void nasal_scalar::set_clear()
type=scalar_nil;
var_string.clear();
var_number=0;
var_array.clear();
std::vector<int> tmp_vec;
var_array.swap(tmp_vec);
var_hash.clear();
var_func.set_clear();
return;
@@ -296,6 +312,12 @@ int nasal_scalar::vector_pop()
var_array.pop_back();
return ret;
}
int nasal_scalar::vector_get_member(int place)
{
if(place<0 || place>=var_array.size())
return -1;
return var_array[place];
}
void nasal_scalar::hash_add_new_member(std::string member_name,int addr)
{
// if hash has a new function member
@@ -334,6 +356,14 @@ std::string nasal_scalar::get_string()
{
return var_string;
}
std::vector<int>& nasal_scalar::get_vector()
{
return var_array;
}
std::map<std::string,int>& nasal_scalar::get_hash()
{
return var_hash;
}
nasal_function& nasal_scalar::get_function()
{
return var_func;