SCFG/GrammarSymbol.C at master · bmajoros/SCFG · GitHub

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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
/****************************************************************
 GrammarSymbol.C
 william.majoros@duke.edu

 This is open-source software, governed by the ARTISTIC LICENSE
 (see www.opensource.org).
 ****************************************************************/
#include <iostream>
#include "GrammarSymbol.H"
#include "BOOM/Constants.H"
using namespace std;
using namespace BOOM;


GrammarSymbol::GrammarSymbol(SymbolType t,const BOOM::String &lexeme)
  : type(t), lexeme(lexeme)
{
  // ctor
}


GrammarSymbol::GrammarSymbol()
{
  // ctor
}


BOOM::String &GrammarSymbol::getLexeme()
{
    return lexeme;
}


SymbolType &GrammarSymbol::getType()
{
    return type;
}


bool GrammarSymbol::isTerminal() const
{
    return type==TERMINAL_SYMBOL;
}


bool GrammarSymbol::isNonterminal() const
{
    return type==NONTERMINAL_SYMBOL;
}


unsigned GrammarSymbol::hash() const
{
  //unsigned u=reinterpret_cast<unsigned>(this);
  //return u%UINT_MAX;
  return lexeme.hash();
}


bool GrammarSymbol::operator==(const GrammarSymbol &other)
{
  //return this==&other;
  return type==other.type && lexeme==other.lexeme;
}


void GrammarSymbol::printOn(ostream &os) const
{
  os<<lexeme;
}


ostream &operator<<(ostream &os,const GrammarSymbol &S)
{
  S.printOn(os);
  return os;
}