Delete abstract_syntax_tree.h
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Valk Richard Li
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#ifndef __ABSTRACT_SYNTAX_TREE_H__
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#define __ABSTRACT_SYNTAX_TREE_H__
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class abstract_syntax_tree
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{
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private:
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// basic elements
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int line;
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int symbol_number;
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bool symbol_is_global;
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int node_type;
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std::list<abstract_syntax_tree> children;
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// is this node is a number|string|identifier node
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// then the three elements below is of great use
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double var_number;
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std::string var_string;
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std::string var_name;
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// var_name is set for __id
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public:
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// basic
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abstract_syntax_tree();
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abstract_syntax_tree(const abstract_syntax_tree&);
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~abstract_syntax_tree();
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abstract_syntax_tree& operator=(const abstract_syntax_tree&);
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// main functions
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// print
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void print_tree();
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void print_tree_block(const int);
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// set
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void set_clear();
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void set_node_type(const int);
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void set_node_line(const int);
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void set_symbol_number(const int);
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void set_var_string(std::string);
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void set_var_number(std::string);
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void set_var_name(std::string);
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void set_var_scope(bool);// true means it exists in global scope
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void add_children(abstract_syntax_tree);
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// get
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int get_node_type();
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int get_node_line();
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int get_symbol_number();
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double get_var_number();
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std::string get_var_string();
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std::string get_var_name();
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bool get_var_scope();
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std::list<abstract_syntax_tree>& get_children();
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};
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abstract_syntax_tree::abstract_syntax_tree()
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{
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node_type=__null_type;
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line=0;
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symbol_number=-1;
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symbol_is_global=false;
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var_number=0;
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var_string="";
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var_name="";
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children.clear();
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return;
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}
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abstract_syntax_tree::abstract_syntax_tree(const abstract_syntax_tree& tmp)
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{
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node_type=tmp.node_type;
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line=tmp.line;
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symbol_number=tmp.symbol_number;
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symbol_is_global=tmp.symbol_is_global;
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var_number=tmp.var_number;
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var_string=tmp.var_string;
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var_name=tmp.var_name;
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children=tmp.children;
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return;
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}
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abstract_syntax_tree::~abstract_syntax_tree()
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{
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node_type=__null_type;
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line=0;
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symbol_number=-1;
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symbol_is_global=false;
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var_number=0;
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var_string.clear();
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var_name.clear();
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children.clear();
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return;
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}
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abstract_syntax_tree& abstract_syntax_tree::operator=(const abstract_syntax_tree& tmp)
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{
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node_type=tmp.node_type;
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line=tmp.line;
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symbol_number=tmp.symbol_number;
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symbol_is_global=tmp.symbol_is_global;
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var_number=tmp.var_number;
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var_string=tmp.var_string;
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var_name=tmp.var_name;
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children.clear();
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children=tmp.children;
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return *this;
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}
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void abstract_syntax_tree::print_tree()
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{
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std::cout<<">> [Abstract-syntax-tree] get tree root: "<<(this)<<""<<std::endl;
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print_tree_block(1);
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return;
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}
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void abstract_syntax_tree::print_tree_block(const int n)
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{
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std::string __str="";
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for(int i=0;i<n;++i)
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__str+="| ";
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std::cout<<__str;
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print_parse_token(node_type);
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switch(node_type)
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{
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case __number: std::cout<<": "<<var_number;break;
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case __string: std::cout<<": "<<var_string;break;
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case __id:
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case __dynamic_id:
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case __call_hash:
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std::cout<<": "<<var_name<<" (sym_num:"<<symbol_number<<"["<<(symbol_is_global? "global":"local")<<"])";
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break;
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case __call_vector:
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case __call_function:break;
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default:break;
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}
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std::cout<<std::endl;
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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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i->print_tree_block(n+1);
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}
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return;
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}
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void abstract_syntax_tree::set_clear()
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{
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node_type=__null_type;
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line=0;
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symbol_number=-1;
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var_number=0;
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var_string="";
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var_name="";
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children.clear();
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return;
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}
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void abstract_syntax_tree::set_node_type(const int __node_type)
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{
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node_type=__node_type;
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return;
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}
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void abstract_syntax_tree::set_node_line(const int __line)
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{
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if(__line>=0)
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line=__line;
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else
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{
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std::cout<<">> [Abstract-syntax-tree-warning] incorrect line under 0: "<<__line<<"."<<std::endl;
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line=0;
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}
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return;
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}
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void abstract_syntax_tree::set_symbol_number(const int __sym_num)
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{
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symbol_number=__sym_num;
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return;
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}
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void abstract_syntax_tree::set_var_string(std::string __str)
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{
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var_string=__str;
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return;
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}
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void abstract_syntax_tree::set_var_number(std::string __str)
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{
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var_number=trans_string_to_number(__str);
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return;
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}
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void abstract_syntax_tree::set_var_name(std::string __str)
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{
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var_name=__str;
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return;
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}
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void abstract_syntax_tree::set_var_scope(bool is_global)
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{
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symbol_is_global=is_global;
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return;
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}
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void abstract_syntax_tree::add_children(abstract_syntax_tree p)
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{
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// use abstract_syntax_tree instead of abstract_syntax_tree&
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// because when this function get a 'p' from returned value of
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// another function,this may result in s SIGSEGV.
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children.push_back(p);
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return;
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}
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int abstract_syntax_tree::get_node_type()
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{
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return node_type;
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}
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int abstract_syntax_tree::get_node_line()
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{
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return line;
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}
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int abstract_syntax_tree::get_symbol_number()
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{
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return symbol_number;
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}
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double abstract_syntax_tree::get_var_number()
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{
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return var_number;
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}
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std::string abstract_syntax_tree::get_var_string()
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{
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return var_string;
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}
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std::string abstract_syntax_tree::get_var_name()
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{
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return var_name;
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}
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bool abstract_syntax_tree::get_var_scope()
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{
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return symbol_is_global;
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}
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std::list<abstract_syntax_tree>& abstract_syntax_tree::get_children()
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{
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return children;
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}
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#endif
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