Delete abstract_syntax_tree.h

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Valk Richard Li 2019-10-02 18:47:23 +08:00 committed by GitHub
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#ifndef __ABSTRACT_SYNTAX_TREE_H__
#define __ABSTRACT_SYNTAX_TREE_H__
#include "nasal_parser.h"
class ast_tree_node
{
protected:
int line;
int type;
std::list<ast_tree_node> children;
double num;
public:
ast_tree_node()
{
line=0;
type=0;
children.clear();
}
void set_line(int _line)
{
line=_line;
}
void set_type(int _type)
{
type=_type;
}
int return_line()
{
return line;
}
int return_type()
{
return type;
}
int child_num()
{
int cnt=0;
for(std::list<ast_tree_node>::iterator i=children.begin();i!=children.end();++i)
++cnt;
return cnt;
}
std::list<ast_tree_node>& return_list()
{
return children;
}
void print_all_tree(int tabnum=0)
{
for(int i=0;i<tabnum;++i)
std::cout<<" ";
if(type==__number)
{
std::cout<<"[ "<<num<<" ]"<<std::endl;
return;
}
std::cout<<"{ ";
print_token(type);
std::cout<<std::endl;
for(std::list<ast_tree_node>::iterator i=children.begin();i!=children.end();++i)
{
i->print_all_tree(tabnum+1);
}
for(int i=0;i<tabnum;++i)
std::cout<<" ";
std::cout<<"}"<<std::endl;
return;
}
double run()
{
if(type==__number)
return num;
if(type==__add_operator)
{
double sum=0;
std::list<ast_tree_node>::iterator i=children.begin();
sum=i->run()+(++i)->run();
return sum;
}
else if(type==__sub_operator)
{
double sum=0;
std::list<ast_tree_node>::iterator i=children.begin();
sum=i->run()-(++i)->run();
return sum;
}
else
{
for(std::list<ast_tree_node>::iterator i=children.begin();i!=children.end();++i)
std::cout<<i->run()<<std::endl;
return 0;
}
return 0;
}
};
class ast_node:public ast_tree_node
{
public:
ast_node():ast_tree_node()
{
;
}
};
class ast_leaf:public ast_tree_node
{
public:
ast_leaf():ast_tree_node()
{
;
}
};
class operator_expr:public ast_node
{
public:
operator_expr():ast_node()
{
;
}
};
class number_node:public ast_leaf
{
public:
number_node():ast_leaf()
{
num=0;
}
void set_number(std::string& str)
{
type=__number;
double is_float=false;
int DotPlace=0;
for(int i=0;i<(int)str.length();++i)
if(str[i]=='.')
{
is_float=true;
DotPlace=i;
break;
}
if(!is_float)
{
num=0;
double acc=1;
for(int i=(int)str.length()-1;i>=0;--i)
{
num+=acc*((double)(str[i]-'0'));
acc*=10;
}
}
else
{
num=0;
double acc=1;
double aff=0.1;
for(int i=DotPlace+1;i<(int)str.length();++i)
{
num+=aff*((double)(str[i]-'0'));
aff*=0.1;
}
for(int i=DotPlace-1;i>=0;--i)
{
num+=acc*((double)(str[i]-'0'));
acc*=10;
}
}
return;
}
};
#endif