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1 # ----------------------------------------------------------------------
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2 # ctokens.py
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3 #
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4 # Token specifications for symbols in ANSI C and C++. This file is
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5 # meant to be used as a library in other tokenizers.
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6 # ----------------------------------------------------------------------
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7
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8 # Reserved words
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9
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10 tokens = [
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11 # Literals (identifier, integer constant, float constant, string constant, char const)
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12 'ID', 'TYPEID', 'INTEGER', 'FLOAT', 'STRING', 'CHARACTER',
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13
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14 # Operators (+,-,*,/,%,|,&,~,^,<<,>>, ||, &&, !, <, <=, >, >=, ==, !=)
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15 'PLUS', 'MINUS', 'TIMES', 'DIVIDE', 'MODULO',
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16 'OR', 'AND', 'NOT', 'XOR', 'LSHIFT', 'RSHIFT',
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17 'LOR', 'LAND', 'LNOT',
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18 'LT', 'LE', 'GT', 'GE', 'EQ', 'NE',
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19
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20 # Assignment (=, *=, /=, %=, +=, -=, <<=, >>=, &=, ^=, |=)
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21 'EQUALS', 'TIMESEQUAL', 'DIVEQUAL', 'MODEQUAL', 'PLUSEQUAL', 'MINUSEQUAL',
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22 'LSHIFTEQUAL','RSHIFTEQUAL', 'ANDEQUAL', 'XOREQUAL', 'OREQUAL',
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23
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24 # Increment/decrement (++,--)
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25 'INCREMENT', 'DECREMENT',
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26
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27 # Structure dereference (->)
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28 'ARROW',
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29
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30 # Ternary operator (?)
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31 'TERNARY',
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32
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33 # Delimeters ( ) [ ] { } , . ; :
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34 'LPAREN', 'RPAREN',
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35 'LBRACKET', 'RBRACKET',
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36 'LBRACE', 'RBRACE',
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37 'COMMA', 'PERIOD', 'SEMI', 'COLON',
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38
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39 # Ellipsis (...)
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40 'ELLIPSIS',
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41 ]
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42
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43 # Operators
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44 t_PLUS = r'\+'
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45 t_MINUS = r'-'
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46 t_TIMES = r'\*'
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47 t_DIVIDE = r'/'
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48 t_MODULO = r'%'
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49 t_OR = r'\|'
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50 t_AND = r'&'
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51 t_NOT = r'~'
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52 t_XOR = r'\^'
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53 t_LSHIFT = r'<<'
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54 t_RSHIFT = r'>>'
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55 t_LOR = r'\|\|'
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56 t_LAND = r'&&'
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57 t_LNOT = r'!'
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58 t_LT = r'<'
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59 t_GT = r'>'
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60 t_LE = r'<='
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61 t_GE = r'>='
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62 t_EQ = r'=='
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63 t_NE = r'!='
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64
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65 # Assignment operators
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66
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67 t_EQUALS = r'='
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68 t_TIMESEQUAL = r'\*='
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69 t_DIVEQUAL = r'/='
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70 t_MODEQUAL = r'%='
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71 t_PLUSEQUAL = r'\+='
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72 t_MINUSEQUAL = r'-='
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73 t_LSHIFTEQUAL = r'<<='
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74 t_RSHIFTEQUAL = r'>>='
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75 t_ANDEQUAL = r'&='
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76 t_OREQUAL = r'\|='
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77 t_XOREQUAL = r'\^='
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78
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79 # Increment/decrement
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80 t_INCREMENT = r'\+\+'
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81 t_DECREMENT = r'--'
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82
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83 # ->
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84 t_ARROW = r'->'
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85
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86 # ?
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87 t_TERNARY = r'\?'
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88
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89 # Delimeters
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90 t_LPAREN = r'\('
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91 t_RPAREN = r'\)'
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92 t_LBRACKET = r'\['
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93 t_RBRACKET = r'\]'
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94 t_LBRACE = r'\{'
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95 t_RBRACE = r'\}'
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96 t_COMMA = r','
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97 t_PERIOD = r'\.'
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98 t_SEMI = r';'
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99 t_COLON = r':'
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100 t_ELLIPSIS = r'\.\.\.'
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101
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102 # Identifiers
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103 t_ID = r'[A-Za-z_][A-Za-z0-9_]*'
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104
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105 # Integer literal
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106 t_INTEGER = r'\d+([uU]|[lL]|[uU][lL]|[lL][uU])?'
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107
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108 # Floating literal
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109 t_FLOAT = r'((\d+)(\.\d+)(e(\+|-)?(\d+))? | (\d+)e(\+|-)?(\d+))([lL]|[fF])?'
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110
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111 # String literal
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112 t_STRING = r'\"([^\\\n]|(\\.))*?\"'
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113
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114 # Character constant 'c' or L'c'
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115 t_CHARACTER = r'(L)?\'([^\\\n]|(\\.))*?\''
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116
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117 # Comment (C-Style)
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118 def t_COMMENT(t):
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119 r'/\*(.|\n)*?\*/'
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120 t.lexer.lineno += t.value.count('\n')
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121 return t
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122
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123 # Comment (C++-Style)
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124 def t_CPPCOMMENT(t):
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125 r'//.*\n'
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126 t.lexer.lineno += 1
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127 return t
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128
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129
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130
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131
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132
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133
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