cpp-gpengine/include/SymbolStack.h at master · manast/cpp-gpengine · GitHub

45 lines (37 loc) · 926 Bytes

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

#ifndef _GP_SYMBOL_STACK_H

#define _GP_SYMBOL_STACK_H

#include <vector>

#include "Symbol.h"

using namespace std;

class SymbolStack {

public:

bool empty() const

{return (c.empty()); }

int size() const

{return (c.size()); }

Symbol* top()

{return (c.back()); }

const Symbol* top() const

{return (c.back()); }

void push(Symbol* x)

{c.push_back(x); }

void pop()

{c.pop_back(); }

bool operator==(const SymbolStack& x) const

{return (c == x.c); }

bool operator!=(const SymbolStack& x) const

{return (!(*this == x)); }

bool operator<(const SymbolStack& x) const

{return (c < x.c); }

bool operator>(const SymbolStack& x) const

{return (x < *this); }

bool operator<=(const SymbolStack& x) const

{return (!(x < *this)); }

bool operator>=(const SymbolStack& x) const

{return (!(*this < x)); }

vector <Symbol*> get_vector ()

{return c;}

protected:

vector <Symbol*> c;

};

#endif