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Add new functions

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This commit is contained in:
Valk Richard Li
2019-11-27 16:01:11 +08:00
committed by GitHub
parent e58b10cd8a
commit ab199ea780
4 changed files with 62 additions and 0 deletions
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balloon/abstract_syntax_tree.cpp
+40
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@@ -694,8 +694,11 @@ void abstract_syntax_tree::run_root()
{
recursion_depth=0;
++recursion_depth;
// before running initializing
while(!ret_stack.empty())ret_stack.pop();
scope.set_clear();
srand(unsigned(time(NULL)));
int beg_time,end_time;
exit_type=__process_exited_successfully;
@@ -1057,6 +1060,43 @@ var abstract_syntax_tree::run_func(std::list<var> parameter,var self_func)
ret.set_string(str_for_input);
ret_stack.push(ret);
}
else if(self_func.get_name()=="size")
{
if(!parameter.empty())
{
std::list<var>::iterator i=parameter.begin();
if(i->get_type()==__var_array)
{
int cnt=0;
cnt=i->get_array_size();
ret.set_type(__var_number);
ret.set_number((double)cnt);
}
else
{
exit_type=__error_value_type;
std::cout<<">>[Runtime-error] line "<<this->line<<": incorrect value type.must use an array."<<std::endl;
}
}
else
{
exit_type=__lack_parameter;
std::cout<<">>[Runtime-error] line "<<this->line<<": lack parameter(s)."<<std::endl;
}
// this must be added when running a function
if(exit_type!=__process_exited_successfully)
ret.set_type(__null_type);
ret_stack.push(ret);
}
else if(self_func.get_name()=="rand")
{
ret.set_type(__var_number);
double content=rand();
while(content>=1)content/=10;
ret.set_number(content);
// this must be added when running a function
ret_stack.push(ret);
}
else
{
for(;para_name!=para.children.end();++para_name,++para_value)