forked from xxq250/Nasal-Interpreter
881 lines
26 KiB
C++
881 lines
26 KiB
C++
#ifndef __ABSTRACT_SYNTAX_TREE_CPP__
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#define __ABSTRACT_SYNTAX_TREE_CPP__
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#include "abstract_syntax_tree.h"
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int exit_type=0;
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std::stack<var> ret_stack;// for function ret use
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std::list<var> parameter;// for function call use
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var abstract_syntax_tree::calculation()
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{
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var temp;
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temp.set_type(__null_type);
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if(this->type==__number)
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{
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temp.set_type(__var_number);
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temp.set_number(number);
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return temp;
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}
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else if(this->type==__string)
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{
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temp.set_type(__var_string);
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temp.set_string(str);
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return temp;
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}
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else if(this->type==__id)
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{
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temp=this->call_identifier();
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return temp;
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}
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else if(this->type==__array)
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{
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temp=this->array_generation();
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return temp;
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}
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else if(this->type==__hash)
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{
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temp=this->hash_generation();
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return temp;
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}
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else if(this->type==__function)
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{
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temp.set_type(__var_function);
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temp.set_function(*this);
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return temp;
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}
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if(this->type==__nor_operator)
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{
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temp.set_type(__var_number);
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temp=children.front().calculation();
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if(temp.get_type()!=__var_number)
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'!\' but use \'";
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print_scalar(temp.get_type());
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std::cout<<"\'."<<std::endl;
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}
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else
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{
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if(temp.get_number())
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temp.set_number(0);
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else
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temp.set_number(1);
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}
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return temp;
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}
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else if(this->type==__add_operator)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
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temp.set_number(left_child.get_number()+right_child.get_number());
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'+\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__sub_operator)
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{
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temp.set_type(__var_number);
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std::list<abstract_syntax_tree>::iterator i=children.begin();
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++i;
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if(i==children.end())
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{
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temp=children.front().calculation();
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if(temp.get_type()==__var_number)
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temp.set_number(temp.get_number()*(-1));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'-\' but use \'";
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print_scalar(temp.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
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temp.set_number(left_child.get_number()-right_child.get_number());
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'-\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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}
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else if(this->type==__mul_operator)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
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temp.set_number(left_child.get_number()*right_child.get_number());
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'*\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__div_operator)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
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{
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temp.set_number(left_child.get_number()/right_child.get_number());
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if(std::isnan(temp.get_number()) || std::isinf(temp.get_number()))
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{
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exit_type=__sigfpe_arithmetic_exception;
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std::cout<<">>[Runtime-error] line "<<line<<": get number \'NaN\' or \'Inf\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a number to use \'/\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__link_operator)
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{
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temp.set_type(__var_string);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==__var_string && right_child.get_type()==__var_string)
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temp.set_string(left_child.get_string()+right_child.get_string());
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a string to use \'~\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__cmp_equal)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==right_child.get_type())
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{
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if(left_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number()==right_child.get_number()));
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else if(left_child.get_type()==__var_string)
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temp.set_number((double)(left_child.get_string()==right_child.get_string()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'==\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'==\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__cmp_not_equal)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==right_child.get_type())
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{
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if(left_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number()!=right_child.get_number()));
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else if(left_child.get_type()==__var_string)
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temp.set_number((double)(left_child.get_string()!=right_child.get_string()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'!=\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'!=\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__cmp_less)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==right_child.get_type())
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{
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if(left_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number()<right_child.get_number()));
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else if(left_child.get_type()==__var_string)
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temp.set_number((double)(left_child.get_string()<right_child.get_string()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'<\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'<\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__cmp_more)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==right_child.get_type())
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{
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if(left_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number()>right_child.get_number()));
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else if(left_child.get_type()==__var_string)
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temp.set_number((double)(left_child.get_string()>right_child.get_string()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'>\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'>\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__cmp_less_or_equal)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==right_child.get_type())
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{
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if(left_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number()<=right_child.get_number()));
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else if(left_child.get_type()==__var_string)
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temp.set_number((double)(left_child.get_string()<=right_child.get_string()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'<=\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'<=\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__cmp_more_or_equal)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==right_child.get_type())
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{
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if(left_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number()>=right_child.get_number()));
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else if(left_child.get_type()==__var_string)
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temp.set_number((double)(left_child.get_string()>=right_child.get_string()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use number or string to use \'>=\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'>=\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__or_operator)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number() || right_child.get_number()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'or\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else if(this->type==__and_operator)
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{
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temp.set_type(__var_number);
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var left_child=children.front().calculation();
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var right_child=children.back().calculation();
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if(left_child.get_type()==__var_number && right_child.get_type()==__var_number)
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temp.set_number((double)(left_child.get_number() && right_child.get_number()));
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use same type to use \'and\' but use \'";
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print_scalar(left_child.get_type());
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std::cout<<"\' and \'";
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print_scalar(right_child.get_type());
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std::cout<<"\'."<<std::endl;
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}
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": error type \'";
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print_detail_token(this->type);
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std::cout<<"\' occurred when doing calculation."<<std::endl;
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}
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return temp;
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}
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bool abstract_syntax_tree::condition_check()
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{
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bool ret=false;
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var temp=calculation();
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if(temp.get_type()==__var_number)
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{
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if(temp.get_number())
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ret=true;
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}
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": must use a number to make a choice but use \'";
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print_scalar(temp.get_type());
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std::cout<<"\'."<<std::endl;
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}
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return ret;
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}
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var abstract_syntax_tree::call_identifier()
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{
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var temp;
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temp.set_type(__null_type);
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if(scope.search_var(name))
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temp=scope.get_var(name);
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else
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{
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std::cout<<">>[Runtime-error] line "<<line<<": cannot find a var named \'"<<name<<"\'."<<std::endl;
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exit_type=__find_var_failure;
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return temp;
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}
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if(!children.empty())
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{
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for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
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{
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if(i->type==__call_array && temp.get_type()==__var_array)
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{
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var place=i->children.front().calculation();
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if(place.get_type()==__var_number)
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temp=temp.get_array_member((int)place.get_number());
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else
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{
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exit_type=__error_value_type;
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std::cout<<">>[Runtime-error] line "<<line<<": ";
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print_detail_token(i->type);
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std::cout<<": incorrect type \'";
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print_scalar(temp.get_type());
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std::cout<<"\'."<<std::endl;
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break;
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}
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}
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else if(i->type==__call_hash && temp.get_type()==__var_hash)
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{
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temp=temp.get_hash_member(i->name);
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if(temp.get_type()==__null_type)
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{
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exit_type=__get_value_failure;
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std::cout<<">>[Runtime-error] line "<<line<<": cannot find a hash-member named \'"<<i->name<<"\' or this value is set to __null_type. detail: ";
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temp.print_var();
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std::cout<<"."<<std::endl;
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break;
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}
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}
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else if(i->type==__call_function && temp.get_type()==__var_function)
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{
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parameter.clear();
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for(std::list<abstract_syntax_tree>::iterator j=i->children.begin();j!=i->children.end();++j)
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parameter.push_back(j->calculation());
|
|
temp=temp.get_function().run_func();
|
|
}
|
|
else
|
|
{
|
|
exit_type=__error_value_type;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": ";
|
|
print_detail_token(i->type);
|
|
std::cout<<": incorrect type \'";
|
|
print_scalar(temp.get_type());
|
|
std::cout<<"\'."<<std::endl;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return temp;
|
|
}
|
|
|
|
var abstract_syntax_tree::array_generation()
|
|
{
|
|
var new_var;
|
|
new_var.set_type(__var_array);
|
|
if(!children.empty())
|
|
for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
|
|
new_var.append_array(i->calculation());
|
|
return new_var;
|
|
}
|
|
|
|
var abstract_syntax_tree::hash_generation()
|
|
{
|
|
var new_var;
|
|
new_var.set_type(__var_hash);
|
|
if(!children.empty())
|
|
for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
|
|
{
|
|
var temp;
|
|
temp=i->children.front().calculation();
|
|
temp.set_name(i->name);
|
|
new_var.append_hash(temp);
|
|
}
|
|
return new_var;
|
|
}
|
|
|
|
var* abstract_syntax_tree::get_var_addr()
|
|
{
|
|
var* addr=&error_var;
|
|
if(scope.search_var(name))
|
|
addr=scope.get_addr(name);
|
|
else
|
|
{
|
|
std::cout<<">>[Runtime-error] line "<<line<<": cannot find a var named \'"<<name<<"\'."<<std::endl;
|
|
exit_type=__find_var_failure;
|
|
return addr;
|
|
}
|
|
if(!children.empty())
|
|
{
|
|
for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
|
|
{
|
|
if(i->type==__call_array && addr->get_type()==__var_array)
|
|
{
|
|
var place=i->children.front().calculation();
|
|
if(place.get_type()==__var_number)
|
|
addr=addr->get_array_member_addr((int)place.get_number());
|
|
else
|
|
{
|
|
exit_type=__error_value_type;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": ";
|
|
print_detail_token(i->type);
|
|
std::cout<<": incorrect type \'";
|
|
print_scalar(addr->get_type());
|
|
std::cout<<"\'."<<std::endl;
|
|
break;
|
|
}
|
|
}
|
|
else if(i->type==__call_hash && addr->get_type()==__var_hash)
|
|
{
|
|
addr=addr->get_hash_member_addr(i->name);
|
|
if(addr->get_type()==__null_type)
|
|
{
|
|
exit_type=__get_value_failure;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": cannot find a hash-member named \'"<<i->name<<"\'."<<std::endl;
|
|
break;
|
|
}
|
|
}
|
|
else if(i->type==__call_function && addr->get_type()==__var_function)
|
|
{
|
|
exit_type=__error_value_type;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": function-returned value cannot be assigned."<<std::endl;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
exit_type=__error_value_type;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": ";
|
|
print_detail_token(i->type);
|
|
std::cout<<": incorrect type \'";
|
|
print_scalar(addr->get_type());
|
|
std::cout<<"\'."<<std::endl;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
return addr;
|
|
}
|
|
|
|
var abstract_syntax_tree::assignment()
|
|
{
|
|
var ret,temp;
|
|
abstract_syntax_tree id=children.front();
|
|
abstract_syntax_tree value=children.back();
|
|
var* addr=id.get_var_addr();
|
|
if(value.type==__equal || value.type==__add_equal || value.type==__sub_equal || value.type==__mul_equal || value.type==__div_equal || value.type==__link_equal)
|
|
temp=value.assignment();
|
|
else
|
|
temp=value.calculation();
|
|
if(type==__equal)
|
|
{
|
|
std::string tname=addr->get_name();
|
|
*addr=temp;
|
|
addr->set_name(tname);
|
|
}
|
|
else if(type==__add_equal || type==__sub_equal || type==__mul_equal || type==__div_equal)
|
|
{
|
|
if(addr->get_type()==__var_number && temp.get_type()==__var_number)
|
|
{
|
|
switch(type)
|
|
{
|
|
case __add_equal:addr->set_number(addr->get_number()+temp.get_number());break;
|
|
case __sub_equal:addr->set_number(addr->get_number()-temp.get_number());break;
|
|
case __mul_equal:addr->set_number(addr->get_number()*temp.get_number());break;
|
|
case __div_equal:addr->set_number(addr->get_number()/temp.get_number());break;
|
|
}
|
|
if(std::isnan(addr->get_number()) || std::isinf(addr->get_number()))
|
|
{
|
|
exit_type=__sigfpe_arithmetic_exception;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": get number \'NaN\' or \'Inf\'."<<std::endl;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
exit_type=__error_value_type;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": incorrect type \'";
|
|
print_scalar(addr->get_type());
|
|
std::cout<<"\' and \'";
|
|
print_scalar(temp.get_type());
|
|
std::cout<<"\' but this operator ";
|
|
print_detail_token(type);
|
|
std::cout<<" must use \'number\' and \'number\'."<<std::endl;
|
|
}
|
|
}
|
|
else if(type==__link_equal)
|
|
{
|
|
if(addr->get_type()==__var_string && temp.get_type()==__string)
|
|
addr->set_string(addr->get_string()+temp.get_string());
|
|
else
|
|
{
|
|
exit_type=__error_value_type;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": incorrect type \'";
|
|
print_scalar(addr->get_type());
|
|
std::cout<<"\' and \'";
|
|
print_scalar(temp.get_type());
|
|
std::cout<<"\' but this operator ~ must use \'string\' and \'string\'."<<std::endl;
|
|
}
|
|
}
|
|
|
|
ret=*addr;
|
|
return ret;
|
|
}
|
|
|
|
void abstract_syntax_tree::run_root()
|
|
{
|
|
while(!ret_stack.empty())ret_stack.pop();
|
|
scope.set_clear();
|
|
int beg_time,end_time;
|
|
exit_type=__process_exited_successfully;
|
|
|
|
beg_time=time(NULL);
|
|
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->calculation();
|
|
new_var.set_name(_name);
|
|
scope.add_new_var(new_var);
|
|
}
|
|
else
|
|
{
|
|
std::cout<<">>[Runtime-error] line "<<line<<": redeclaration of \'"<<_name<<"\'."<<std::endl;
|
|
exit_type=__redeclaration;
|
|
break;
|
|
}
|
|
}
|
|
else if(i->type==__equal || i->type==__add_equal || i->type==__sub_equal || i->type==__mul_equal || i->type==__div_equal || i->type==__link_equal)
|
|
i->assignment();
|
|
else if(i->type==__add_operator || i->type==__sub_operator || i->type==__mul_operator || i->type==__div_operator || i->type==__link_operator || i->type==__or_operator || i->type==__and_operator || i->type==__nor_operator)
|
|
{
|
|
var t=i->calculation();
|
|
if(t.get_type()==__var_number)
|
|
std::cout<<t.get_number()<<std::endl;
|
|
else if(t.get_type()==__var_string)
|
|
std::cout<<t.get_string()<<std::endl;
|
|
}
|
|
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)
|
|
{
|
|
var t=i->call_identifier();
|
|
if(t.get_type()==__var_number)
|
|
std::cout<<t.get_number()<<std::endl;
|
|
else if(t.get_type()==__var_string)
|
|
std::cout<<t.get_string()<<std::endl;
|
|
}
|
|
else if(i->type==__while)
|
|
{
|
|
scope.add_new_block_scope();
|
|
i->run_loop();
|
|
scope.pop_last_block_scope();
|
|
}
|
|
else if(i->type==__ifelse)
|
|
{
|
|
scope.add_new_block_scope();
|
|
i->run_ifelse();
|
|
scope.pop_last_block_scope();
|
|
}
|
|
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;
|
|
}
|
|
|
|
int abstract_syntax_tree::run_loop()
|
|
{
|
|
int ret=0;
|
|
scope.add_new_local_scope();
|
|
|
|
abstract_syntax_tree condition=children.front();
|
|
abstract_syntax_tree blk=children.back();
|
|
while(condition.condition_check())
|
|
{
|
|
int type=blk.run_block();
|
|
if(type==__break)
|
|
break;
|
|
else if(type==__return)
|
|
{
|
|
ret=__return;
|
|
break;
|
|
}
|
|
if(exit_type!=__process_exited_successfully)
|
|
break;
|
|
}
|
|
scope.pop_last_local_scope();
|
|
return ret;
|
|
}
|
|
|
|
int abstract_syntax_tree::run_ifelse()
|
|
{
|
|
int ret=0;
|
|
scope.add_new_local_scope();
|
|
for(std::list<abstract_syntax_tree>::iterator i=children.begin();i!=children.end();++i)
|
|
{
|
|
if((i->type==__if || i->type==__elsif) && i->children.front().condition_check())
|
|
{
|
|
ret=i->children.back().run_block();
|
|
break;
|
|
}
|
|
else if(i->type==__else)
|
|
{
|
|
ret=i->children.back().run_block();
|
|
break;
|
|
}
|
|
}
|
|
scope.pop_last_local_scope();
|
|
return ret;
|
|
}
|
|
|
|
var abstract_syntax_tree::run_func()
|
|
{
|
|
var ret;
|
|
scope.add_new_block_scope();
|
|
scope.add_new_local_scope();
|
|
abstract_syntax_tree para=children.front();
|
|
abstract_syntax_tree blk=children.back();
|
|
std::list<abstract_syntax_tree>::iterator para_name=para.children.begin();
|
|
std::list<var>::iterator para_value=parameter.begin();
|
|
|
|
for(;para_name!=para.children.end();++para_name,++para_value)
|
|
{
|
|
if(para_value==parameter.end() && para_name!=para.children.end())
|
|
{
|
|
exit_type=__lack_parameter;
|
|
std::cout<<">>[Runtime-error] line "<<line<<": lack parameter(s)."<<std::endl;
|
|
break;
|
|
}
|
|
var new_var;
|
|
new_var=*para_value;
|
|
new_var.set_name(para_name->name);
|
|
scope.add_new_var(new_var);
|
|
}
|
|
if(exit_type==__process_exited_successfully)
|
|
{
|
|
int _t=blk.run_block();
|
|
if(_t!=__return)
|
|
ret_stack.push(error_var);
|
|
}
|
|
|
|
else
|
|
ret_stack.push(error_var);
|
|
|
|
//get return
|
|
scope.pop_last_block_scope();
|
|
ret=ret_stack.top();
|
|
ret_stack.pop();
|
|
|
|
return ret;
|
|
}
|
|
|
|
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->calculation();
|
|
new_var.set_name(_name);
|
|
scope.add_new_var(new_var);
|
|
}
|
|
else
|
|
{
|
|
std::cout<<">>[Runtime-error] line "<<line<<": redeclaration of \'"<<_name<<"\'."<<std::endl;
|
|
exit_type=__redeclaration;
|
|
}
|
|
}
|
|
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)
|
|
{
|
|
var t=i->call_identifier();
|
|
if(t.get_type()==__var_number)
|
|
std::cout<<t.get_number()<<std::endl;
|
|
else if(t.get_type()==__var_string)
|
|
std::cout<<t.get_string()<<std::endl;
|
|
}
|
|
else if(i->type==__equal || i->type==__add_equal || i->type==__sub_equal || i->type==__mul_equal || i->type==__div_equal || i->type==__link_equal)
|
|
i->assignment();
|
|
else if(i->type==__add_operator || i->type==__sub_operator || i->type==__mul_operator || i->type==__div_operator || i->type==__link_operator || i->type==__or_operator || i->type==__and_operator || i->type==__nor_operator)
|
|
{
|
|
var t=i->calculation();
|
|
if(t.get_type()==__var_number)
|
|
std::cout<<t.get_number()<<std::endl;
|
|
else if(t.get_type()==__var_string)
|
|
std::cout<<t.get_string()<<std::endl;
|
|
}
|
|
else if(i->type==__while)
|
|
{
|
|
int type=i->run_loop();
|
|
if(type)
|
|
{
|
|
if(type==__return)
|
|
return type;
|
|
else
|
|
{
|
|
std::cout<<"[Runtime-error] line "<<line<<": incorrect use of break/continue."<<std::endl;
|
|
exit_type=__error_command_use;
|
|
}
|
|
}
|
|
}
|
|
else if(i->type==__ifelse)
|
|
{
|
|
int type=i->run_ifelse();
|
|
if(type)
|
|
return type;
|
|
}
|
|
else if(i->type==__continue)
|
|
return __continue;
|
|
else if(i->type==__break)
|
|
return __break;
|
|
else if(i->type==__return)
|
|
{
|
|
var temp;
|
|
temp.set_type(__null_type);
|
|
if(!(i->children.empty()))
|
|
temp=i->children.front().calculation();
|
|
ret_stack.push(temp);
|
|
return __return;
|
|
}
|
|
if(exit_type!=__process_exited_successfully)
|
|
break;
|
|
}
|
|
scope.pop_last_local_scope();
|
|
return 0;
|
|
}
|
|
|
|
|
|
#endif
|