forked from xxq250/Nasal-Interpreter
Valk Richard Li
133 lines
2.6 KiB
C++
133 lines
2.6 KiB
C++
#ifndef __BALLOON_VAR_H__
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#define __BALLOON_VAR_H__
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enum var_type
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{
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__null_type,
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__var_number,
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__var_string,
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__var_array,
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__var_hash
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};
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class var
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{
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private:
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int type;
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double number;
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std::string str;
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std::string name;
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std::list<var> balloon_array;
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std::list<var> balloon_hash;
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public:
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var()
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{
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number=0;
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str="";
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name="";
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balloon_array.clear();
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balloon_hash.clear();
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return;
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}
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var(const var& p)
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{
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type=p.type;
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number=p.number;
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str=p.str;
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name=p.name;
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balloon_array=p.balloon_array;
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balloon_hash=p.balloon_hash;
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return;
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}
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var& operator=(const var& p)
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{
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type=p.type;
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number=p.number;
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str=p.str;
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name=p.name;
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balloon_array.clear();
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balloon_hash.clear();
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balloon_array=p.balloon_array;
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balloon_hash=p.balloon_hash;
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return *this;
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}
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void set_type(int);
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void set_name(std::string);
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void set_number(double);
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void set_string(std::string);
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void append_array(var);
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void append_hash(var);
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std::string get_name();
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double get_number();
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std::string get_string();
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var& get_array_member(int);
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var& get_hash_member(std::string);
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};
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var error_var;
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void var::set_type(int _type)
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{
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type=_type;
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return;
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}
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void var::set_name(std::string _name)
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{
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name=_name;
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return;
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}
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void var::set_number(double _num)
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{
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number=_num;
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return;
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}
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void var::set_string(std::string _str)
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{
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str=_str;
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return;
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}
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void var::append_array(var _new_var)
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{
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balloon_array.push_back(_new_var);
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return;
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}
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void var::append_hash(var _new_var)
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{
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balloon_hash.push_back(_new_var);
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return;
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}
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std::string var::get_name()
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{
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return name;
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}
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double var::get_number()
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{
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return number;
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}
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std::string var::get_string()
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{
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return str;
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}
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var& var::get_array_member(int _place)
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{
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if(balloon_array.empty())
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{
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std::cout<<">>[Runtime-error] overflow when searching member "<<_place<<" but the max size of array \'"<<name<<"\' is 0."<<std::endl;
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return error_var;
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}
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int cnt=0;
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for(std::list<var>::iterator i=balloon_array.begin();i!=balloon_array.end();++i,++cnt)
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if(cnt==_place)
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return *i;
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std::cout<<">>[Runtime-error] overflow when searching member "<<_place<<" but the max size of array \'"<<name<<"\' is "<<cnt<<"(this means 0-"<<cnt-1<<")."<<std::endl;
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return error_var;
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}
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var& var::get_hash_member(std::string _name)
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{
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for(std::list<var>::iterator i=balloon_hash.begin();i!=balloon_hash.end();++i)
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if(i->name==_name)
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return *i;
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std::cout<<">>[Runtime-error] hash \'"<<name<<"\' does not have a member named \'"<<_name<<"\'"<<std::endl;
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return error_var;
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}
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#endif
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