floraachy/Nasal-Interpreter
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fixed bug when meeting }}}}}}}}}}}}

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This commit is contained in:
Valk Richard Li
2019-11-10 23:44:36 +08:00
committed by GitHub
parent ed2910f708
commit 5134f4eea2
4 changed files with 88 additions and 28 deletions
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86
balloon/abstract_syntax_tree.cpp
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@@ -1,6 +1,6 @@
#ifndef __ABSTRACT_SYNTAX_TREE_CPP__
#define __ABSTRACT_SYNTAX_TREE_CPP__
#include "abstract_syntax_tree.h"
int exit_type=0;
bool abstract_syntax_tree::check()
@@ -12,15 +12,17 @@ bool abstract_syntax_tree::check()
var abstract_syntax_tree::call_id()
{
var temp;
if(children.empty())
if(scope.search_var(name))
temp=scope.get_var(name);
else
{
if(scope.search_var(name))
temp=scope.get_var(name);
else
{
std::cout<<">>[Runtime-error] cannot find a var named \'"<<name<<"\'."<<std::endl;
exit_type=__find_var_failure;
}
std::cout<<">>[Runtime-error] cannot find a var named \'"<<name<<"\'."<<std::endl;
exit_type=__find_var_failure;
return temp;
}
if(!children.empty())
{
;
}
return temp;
}
@@ -113,7 +115,7 @@ void abstract_syntax_tree::run_root()
break;
}
end_time=time(NULL);
std::cout<<"-------------------------------------------------------------------------------------------"<<std::endl;
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;
@@ -128,7 +130,7 @@ void abstract_syntax_tree::run_loop()
abstract_syntax_tree condition=children.front();
abstract_syntax_tree blk=children.back();
while(condition.check())
blk.run_block(__loop);
blk.run_block();
scope.pop_last_local_scope();
return;
}
@@ -150,12 +152,68 @@ void abstract_syntax_tree::run_func()
return;
}
void abstract_syntax_tree::run_block(int block_type)
int abstract_syntax_tree::run_block()
{
scope.add_new_local_scope();
for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
{
if(i->type==__definition)
{
var new_var;
std::list<abstract_syntax_tree>::iterator j=i->children.begin();
std::string _name=j->name;
if(!scope.search_var(_name))
{
++j;
if(j!=i->children.end())
new_var=j->get_value();
new_var.set_name(_name);
scope.add_new_var(new_var);
}
else
{
std::cout<<">>[Runtime-error] redeclaration of \'"<<_name<<"\'."<<std::endl;
exit_type=__redeclaration;
break;
}
}
else if(i->type==__number)
std::cout<<i->number<<std::endl;
else if(i->type==__string)
std::cout<<i->str<<std::endl;
else if(i->type==__id)
std::cout<<i->call_id().get_name()<<std::endl;
else if(i->type==__while)
i->run_loop();
else if(i->type==__ifelse)
i->run_ifelse();
else if(i->type==__continue)
{
return __continue;
// else
// {
// std::cout<<">>[Runtime-error] must use \'continue\' in a loop."<<std::endl;
// exit_type=__error_command_use;
// }
}
else if(i->type==__break)
{
return __loop;
// else
// {
// std::cout<<">>[Runtime-error] must use \'continue\' in a loop."<<std::endl;
// exit_type=__error_command_use;
// }
}
else if(i->type==__return)
{
break;
}
if(exit_type!=__process_exited_successfully)
break;
}
scope.pop_last_local_scope();
return;
return 0;
}