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muParserStack.h
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1 /*
2  __________
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4  / \ | | \| ___/\__ \ \_ __ \/ ___/_/ __ \\_ __ \
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8  Copyright (C) 2004-2011 Ingo Berg
9 
10  Permission is hereby granted, free of charge, to any person obtaining a copy of this
11  software and associated documentation files (the "Software"), to deal in the Software
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17  substantial portions of the Software.
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24 */
25 
26 #ifndef MU_PARSER_STACK_H
27 #define MU_PARSER_STACK_H
28 
29 #include <cassert>
30 #include <string>
31 #include <stack>
32 #include <vector>
33 
34 #include "muParserError.h"
35 #include "muParserToken.h"
36 
41 namespace mu
42 {
43 
52  template <typename TValueType>
53  class ParserStack
54  {
55  private:
56 
58  typedef std::stack<TValueType, std::vector<TValueType> > impl_type;
59 
60  impl_type m_Stack;
61 
62  public:
63 
64  //---------------------------------------------------------------------------
65  ParserStack()
66  :m_Stack()
67  {}
68 
69  //---------------------------------------------------------------------------
70  virtual ~ParserStack()
71  {}
72 
73  //---------------------------------------------------------------------------
82  TValueType pop()
83  {
84  if (empty())
85  throw ParserError( _T("stack is empty.") );
86 
87  TValueType el = top();
88  m_Stack.pop();
89  return el;
90  }
91 
97  void push(const TValueType& a_Val)
98  {
99  m_Stack.push(a_Val);
100  }
101 
103  unsigned size() const
104  {
105  return (unsigned)m_Stack.size();
106  }
107 
109  bool empty() const
110  {
111  return m_Stack.empty();
112  }
113 
118  TValueType& top()
119  {
120  return m_Stack.top();
121  }
122  };
123 } // namespace MathUtils
124 
125 #endif