floraachy/Nasal-Interpreter
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This commit is contained in:
Valk Richard Li
2020-12-09 15:33:33 +08:00
parent d0206abb8d
commit 14852bfc2e
3 changed files with 139 additions and 133 deletions
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nasal_gc.h
+17 -46
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@@ -87,13 +87,11 @@ private:
// and this memory_manager_memory space stores an address to garbage_collector_memory
// and this address points to an nasal_hash
nasal_virtual_machine& vm;
std::list<std::map<std::string,int> > elems;
std::map<std::string,int> elems;
public:
nasal_closure(nasal_virtual_machine&);
~nasal_closure();
void set_vm(nasal_virtual_machine&);
void add_scope();
void del_scope();
void add_new_value(std::string,int);
int get_value_address(std::string);
int get_mem_address(std::string);
@@ -448,75 +446,48 @@ nasal_closure::nasal_closure(nasal_virtual_machine& nvm):vm(nvm)
}
nasal_closure::~nasal_closure()
{
for(std::list<std::map<std::string,int> >::iterator i=elems.begin();i!=elems.end();++i)
for(std::map<std::string,int>::iterator j=i->begin();j!=i->end();++j)
vm.mem_free(j->second);
elems.clear();
return;
}
void nasal_closure::add_scope()
{
std::map<std::string,int> new_scope;
elems.push_back(new_scope);
return;
}
void nasal_closure::del_scope()
{
if(this->elems.empty())
return;
for(std::map<std::string,int>::iterator i=elems.back().begin();i!=elems.back().end();++i)
for(std::map<std::string,int>::iterator i=elems.begin();i!=elems.end();++i)
vm.mem_free(i->second);
this->elems.pop_back();
elems.clear();
return;
}
void nasal_closure::add_new_value(std::string key,int value_address)
{
int new_mem_address=vm.mem_alloc(value_address);
if(elems.back().find(key)!=elems.back().end())
if(elems.find(key)!=elems.end())
{
// if this value already exists,delete the old value and update a new value
int old_mem_address=elems.back()[key];
int old_mem_address=elems[key];
vm.mem_free(old_mem_address);
}
elems.back()[key]=new_mem_address;
elems[key]=new_mem_address;
return;
}
int nasal_closure::get_value_address(std::string key)
{
int ret_address=-1;
for(std::list<std::map<std::string,int> >::iterator i=elems.begin();i!=elems.end();++i)
{
if(i->find(key)!=i->end())
ret_address=vm.mem_get((*i)[key]);
}
if(elems.find(key)!=elems.end())
ret_address=vm.mem_get(elems[key]);
return ret_address;
}
int nasal_closure::get_mem_address(std::string key)
{
int ret_address=-1;
for(std::list<std::map<std::string,int> >::iterator i=elems.begin();i!=elems.end();++i)
{
if(i->find(key)!=i->end())
ret_address=(*i)[key];
}
if(elems.find(key)!=elems.end())
ret_address=elems[key];
return ret_address;
}
void nasal_closure::set_closure(nasal_closure& tmp)
{
for(std::list<std::map<std::string,int> >::iterator i=elems.begin();i!=elems.end();++i)
for(std::map<std::string,int>::iterator j=i->begin();j!=i->end();++j)
vm.mem_free(j->second);
for(std::map<std::string,int>::iterator i=elems.begin();i!=elems.end();++i)
vm.mem_free(i->second);
elems.clear();
for(std::list<std::map<std::string,int> >::iterator i=tmp.elems.begin();i!=tmp.elems.end();++i)
for(std::map<std::string,int>::iterator i=tmp.elems.begin();i!=tmp.elems.end();++i)
{
this->add_scope();
for(std::map<std::string,int>::iterator j=i->begin();j!=i->end();++j)
{
int value_addr=vm.mem_get(j->second);
int new_mem_addr=vm.mem_alloc(value_addr);
vm.add_reference(value_addr);
elems.back()[j->first]=new_mem_addr;
}
int value_addr=vm.mem_get(i->second);
int new_mem_addr=vm.mem_alloc(value_addr);
vm.add_reference(value_addr);
elems[i->first]=new_mem_addr;
}
return;
}