floraachy/Nasal-Interpreter
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This commit is contained in:
Valk Richard Li
2019-11-09 00:02:21 +08:00
committed by GitHub
parent da6fc18e3a
commit c5cc577eeb
5 changed files with 55 additions and 11 deletions
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32
balloon/abstract_syntax_tree.cpp
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@@ -1,15 +1,14 @@
#ifndef __ABSTRACT_SYNTAX_TREE_CPP__
#define __ABSTRACT_SYNTAX_TREE_CPP__
balloon_scope global;
int exit_type=0;
var abstract_syntax_tree::call_id()
{
var temp;
if(children.empty())
{
if(global.search_var(name))
temp=global.get_var(name);
if(scope.search_var(name))
temp=scope.get_var(name);
else
{
std::cout<<">>[Runtime-error] cannot find a var named \'"<<name<<"\'."<<std::endl;
@@ -59,7 +58,7 @@ var abstract_syntax_tree::get_value()
}
void abstract_syntax_tree::run_root()
{
global.set_clear();
scope.set_clear();
int beg_time,end_time;
exit_type=__process_exited_successfully;
beg_time=time(NULL);
@@ -70,10 +69,10 @@ void abstract_syntax_tree::run_root()
var new_var;
std::list<abstract_syntax_tree>::iterator j=i->children.begin();
std::string _name=j->name;
if(!global.search_var(_name))
if(!scope.search_var(_name))
{
new_var.set_name(_name);
global.add_var(new_var);
scope.add_new_var(new_var);
}
else
{
@@ -87,7 +86,7 @@ void abstract_syntax_tree::run_root()
else if(i->type==__string)
std::cout<<i->str<<std::endl;
else if(i->type==__id)
i->call_id();
std::cout<<i->call_id().get_name()<<std::endl;
else if(i->type==__while)
{
;
@@ -96,17 +95,34 @@ void abstract_syntax_tree::run_root()
{
;
}
if(exit_type!=__process_exited_successfully)
break;
}
end_time=time(NULL);
std::cout<<"-------------------------------------------------------------------------------------------"<<std::endl;
std::cout<<">>[Runtime] process exited after "<<end_time-beg_time<<" sec(s) with returned state \'";
print_exit_type(exit_type);
std::cout<<"\'."<<std::endl;
scope.set_clear();
return;
}
void abstract_syntax_tree::run_func()
{
scope.add_new_block_scope();
scope.add_new_local_scope();
scope.pop_last_block_scope();
return;
}
void abstract_syntax_tree::run_block(int block_type)
{
scope.add_new_local_scope();
scope.pop_last_local_scope();
return;
}