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1 #include "context.h"
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2
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3 static char* tokenizer_version="$Id:";
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4
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5 enum state {s_init,
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6 s_token,
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7 s_string,
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8 s_ignore, // whitespace
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9 s_eol, // ignore to eol
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10 end_state,
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11
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12 s_term, // token terminator
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13 s_single,
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14 s_string1, // first " of string
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15 s_string2, // last " of string
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16 s_slash, // possible start of ignore to eol
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17 };
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18
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19 typedef state PARSE[end_state];
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20
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21 static PARSE parse_table[256] = {
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22 // s_init s_token s_string s_ignore s_eol
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23 { s_single, s_term, s_string, s_single, s_eol, }, // 0x00
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24 { s_single, s_term, s_string, s_single, s_eol, }, // 0x01
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25 { s_single, s_term, s_string, s_single, s_eol, }, // 0x02
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26 { s_single, s_term, s_string, s_single, s_eol, }, // 0x03
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27 { s_single, s_term, s_string, s_single, s_eol, }, // 0x04
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28 { s_single, s_term, s_string, s_single, s_eol, }, // 0x05
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29 { s_single, s_term, s_string, s_single, s_eol, }, // 0x06
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30 { s_single, s_term, s_string, s_single, s_eol, }, // 0x07
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31 { s_single, s_term, s_string, s_single, s_eol, }, // 0x08
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32 { s_ignore, s_term, s_string, s_ignore, s_eol, }, // 0x09 <tab>
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33 { s_ignore, s_term, s_string2, s_ignore, s_ignore, }, // 0x0a <lf>
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34 { s_single, s_term, s_string, s_single, s_eol, }, // 0x0b
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35 { s_single, s_term, s_string, s_single, s_eol, }, // 0x0c
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36 { s_ignore, s_term, s_string2, s_ignore, s_eol, }, // 0x0d <cr>
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37 { s_single, s_term, s_string, s_single, s_eol, }, // 0x0e
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38 { s_single, s_term, s_string, s_single, s_eol, }, // 0x0f
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39 { s_single, s_term, s_string, s_single, s_eol, }, // 0x10
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40 { s_single, s_term, s_string, s_single, s_eol, }, // 0x11 xon char
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41 { s_single, s_term, s_string, s_single, s_eol, }, // 0x12
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42 { s_single, s_term, s_string, s_single, s_eol, }, // 0x13 xoff char
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43 { s_single, s_term, s_string, s_single, s_eol, }, // 0x14
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44 { s_single, s_term, s_string, s_single, s_eol, }, // 0x15
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45 { s_single, s_term, s_string, s_single, s_eol, }, // 0x16
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46 { s_single, s_term, s_string, s_single, s_eol, }, // 0x17
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47 { s_single, s_term, s_string, s_single, s_eol, }, // 0x18
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48 { s_single, s_term, s_string, s_single, s_eol, }, // 0x19
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49 { s_single, s_term, s_string, s_single, s_eol, }, // 0x1a
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50 { s_single, s_term, s_string, s_single, s_eol, }, // 0x1b
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51 { s_single, s_term, s_string, s_single, s_eol, }, // 0x1c
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52 { s_single, s_term, s_string, s_single, s_eol, }, // 0x1d
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53 { s_single, s_term, s_string, s_single, s_eol, }, // 0x1e
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54 { s_single, s_term, s_string, s_single, s_eol, }, // 0x1f
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55 { s_ignore, s_term, s_string, s_ignore, s_eol, }, // 0x20 space
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56 { s_single, s_term, s_string, s_single, s_eol, }, // 0x21 !
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57 { s_string1, s_term, s_string2, s_string1, s_eol, }, // 0x22 "
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58 { s_eol, s_term, s_string, s_eol, s_eol, }, // 0x23 #
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59 { s_single, s_term, s_string, s_single, s_eol, }, // 0x24 $
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60 { s_single, s_term, s_string, s_single, s_eol, }, // 0x25 %
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61 { s_single, s_term, s_string, s_single, s_eol, }, // 0x26 &
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62 { s_single, s_term, s_string, s_single, s_eol, }, // 0x27 '
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63 { s_single, s_term, s_string, s_single, s_eol, }, // 0x28 (
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64 { s_single, s_term, s_string, s_single, s_eol, }, // 0x29 )
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65 { s_single, s_term, s_string, s_single, s_eol, }, // 0x2A *
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66 { s_single, s_term, s_string, s_single, s_eol, }, // 0x2B +
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67 { s_single, s_term, s_string, s_single, s_eol, }, // 0x2C ,
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68 { s_single, s_token, s_string, s_single, s_eol, }, // 0x2D -
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69 { s_single, s_token, s_string, s_single, s_eol, }, // 0x2E .
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70 { s_slash, s_term, s_string, s_slash, s_eol, }, // 0x2F /
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71 { s_token, s_token, s_string, s_token, s_eol, }, // 0x30 0
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72 { s_token, s_token, s_string, s_token, s_eol, }, // 0x31 1
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73 { s_token, s_token, s_string, s_token, s_eol, }, // 0x32 2
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74 { s_token, s_token, s_string, s_token, s_eol, }, // 0x33 3
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75 { s_token, s_token, s_string, s_token, s_eol, }, // 0x34 4
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76 { s_token, s_token, s_string, s_token, s_eol, }, // 0x35 5
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77 { s_token, s_token, s_string, s_token, s_eol, }, // 0x36 6
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78 { s_token, s_token, s_string, s_token, s_eol, }, // 0x37 7
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79 { s_token, s_token, s_string, s_token, s_eol, }, // 0x38 8
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80 { s_token, s_token, s_string, s_token, s_eol, }, // 0x39 9
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81 { s_single, s_term, s_string, s_single, s_eol, }, // 0x3A :
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82 { s_single, s_term, s_string, s_single, s_eol, }, // 0x3B ;
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83 { s_single, s_term, s_string, s_single, s_eol, }, // 0x3C <
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84 { s_single, s_term, s_string, s_single, s_eol, }, // 0x3D =
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85 { s_single, s_term, s_string, s_single, s_eol, }, // 0x3E >
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86 { s_single, s_term, s_string, s_single, s_eol, }, // 0x3F ?
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87 { s_single, s_token, s_string, s_single, s_eol, }, // 0x40 @
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88 { s_token, s_token, s_string, s_token, s_eol, }, // 0x41 A
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89 { s_token, s_token, s_string, s_token, s_eol, }, // 0x42 B
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90 { s_token, s_token, s_string, s_token, s_eol, }, // 0x43 C
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91 { s_token, s_token, s_string, s_token, s_eol, }, // 0x44 D
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92 { s_token, s_token, s_string, s_token, s_eol, }, // 0x45 E
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93 { s_token, s_token, s_string, s_token, s_eol, }, // 0x46 F
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94 { s_token, s_token, s_string, s_token, s_eol, }, // 0x47 G
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95 { s_token, s_token, s_string, s_token, s_eol, }, // 0x48 H
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96 { s_token, s_token, s_string, s_token, s_eol, }, // 0x49 I
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97 { s_token, s_token, s_string, s_token, s_eol, }, // 0x4A J
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98 { s_token, s_token, s_string, s_token, s_eol, }, // 0x4B K
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99 { s_token, s_token, s_string, s_token, s_eol, }, // 0x4C L
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100 { s_token, s_token, s_string, s_token, s_eol, }, // 0x4D M
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101 { s_token, s_token, s_string, s_token, s_eol, }, // 0x4E N
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102 { s_token, s_token, s_string, s_token, s_eol, }, // 0x4F O
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103 { s_token, s_token, s_string, s_token, s_eol, }, // 0x50 P
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104 { s_token, s_token, s_string, s_token, s_eol, }, // 0x51 Q
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105 { s_token, s_token, s_string, s_token, s_eol, }, // 0x52 R
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106 { s_token, s_token, s_string, s_token, s_eol, }, // 0x53 S
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107 { s_token, s_token, s_string, s_token, s_eol, }, // 0x54 T
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108 { s_token, s_token, s_string, s_token, s_eol, }, // 0x55 U
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109 { s_token, s_token, s_string, s_token, s_eol, }, // 0x56 V
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110 { s_token, s_token, s_string, s_token, s_eol, }, // 0x57 W
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111 { s_token, s_token, s_string, s_token, s_eol, }, // 0x58 X
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112 { s_token, s_token, s_string, s_token, s_eol, }, // 0x59 Y
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113 { s_token, s_token, s_string, s_token, s_eol, }, // 0x5A Z
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114 { s_single, s_term, s_string, s_single, s_eol, }, // 0x5B [
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115 { s_single, s_term, s_string, s_single, s_eol, }, // 0x5C backslash
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116 { s_single, s_term, s_string, s_single, s_eol, }, // 0x5D ]
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117 { s_single, s_term, s_string, s_single, s_eol, }, // 0x5E ^
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118 { s_single, s_token, s_string, s_single, s_eol, }, // 0x5F _
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119 { s_single, s_term, s_string, s_single, s_eol, }, // 0x60 `
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120 { s_token, s_token, s_string, s_token, s_eol, }, // 0x61 a
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121 { s_token, s_token, s_string, s_token, s_eol, }, // 0x62 b
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122 { s_token, s_token, s_string, s_token, s_eol, }, // 0x63 c
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123 { s_token, s_token, s_string, s_token, s_eol, }, // 0x64 d
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124 { s_token, s_token, s_string, s_token, s_eol, }, // 0x65 e
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125 { s_token, s_token, s_string, s_token, s_eol, }, // 0x66 f
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126 { s_token, s_token, s_string, s_token, s_eol, }, // 0x67 g
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127 { s_token, s_token, s_string, s_token, s_eol, }, // 0x68 h
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128 { s_token, s_token, s_string, s_token, s_eol, }, // 0x69 i
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129 { s_token, s_token, s_string, s_token, s_eol, }, // 0x6A j
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130 { s_token, s_token, s_string, s_token, s_eol, }, // 0x6B k
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131 { s_token, s_token, s_string, s_token, s_eol, }, // 0x6C l
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132 { s_token, s_token, s_string, s_token, s_eol, }, // 0x6D m
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133 { s_token, s_token, s_string, s_token, s_eol, }, // 0x6E n
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134 { s_token, s_token, s_string, s_token, s_eol, }, // 0x6F o
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135 { s_token, s_token, s_string, s_token, s_eol, }, // 0x70 p
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136 { s_token, s_token, s_string, s_token, s_eol, }, // 0x71 q
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137 { s_token, s_token, s_string, s_token, s_eol, }, // 0x72 r
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138 { s_token, s_token, s_string, s_token, s_eol, }, // 0x73 s
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139 { s_token, s_token, s_string, s_token, s_eol, }, // 0x74 t
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140 { s_token, s_token, s_string, s_token, s_eol, }, // 0x75 u
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141 { s_token, s_token, s_string, s_token, s_eol, }, // 0x76 v
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142 { s_token, s_token, s_string, s_token, s_eol, }, // 0x77 w
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143 { s_token, s_token, s_string, s_token, s_eol, }, // 0x78 x
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144 { s_token, s_token, s_string, s_token, s_eol, }, // 0x79 y
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145 { s_token, s_token, s_string, s_token, s_eol, }, // 0x7A z
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146 { s_single, s_term, s_string, s_single, s_eol, }, // 0x7B {
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147 { s_single, s_term, s_string, s_single, s_eol, }, // 0x7C |
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148 { s_single, s_term, s_string, s_single, s_eol, }, // 0x7D }
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149 { s_single, s_term, s_string, s_single, s_eol, }, // 0x7E ~
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150 { s_single, s_term, s_string, s_single, s_eol, }, // 0x7f
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151 { s_single, s_term, s_string, s_single, s_eol, }, // 0x80
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152 { s_single, s_term, s_string, s_single, s_eol, }, // 0x81
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153 { s_single, s_term, s_string, s_single, s_eol, }, // 0x82
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154 { s_single, s_term, s_string, s_single, s_eol, }, // 0x83
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155 { s_single, s_term, s_string, s_single, s_eol, }, // 0x84
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156 { s_single, s_term, s_string, s_single, s_eol, }, // 0x85
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157 { s_single, s_term, s_string, s_single, s_eol, }, // 0x86
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158 { s_single, s_term, s_string, s_single, s_eol, }, // 0x87
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159 { s_single, s_term, s_string, s_single, s_eol, }, // 0x88
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160 { s_single, s_term, s_string, s_single, s_eol, }, // 0x89
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161 { s_single, s_term, s_string, s_single, s_eol, }, // 0x8a
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162 { s_single, s_term, s_string, s_single, s_eol, }, // 0x8b
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163 { s_single, s_term, s_string, s_single, s_eol, }, // 0x8c
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164 { s_single, s_term, s_string, s_single, s_eol, }, // 0x8d
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165 { s_single, s_term, s_string, s_single, s_eol, }, // 0x8e
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166 { s_single, s_term, s_string, s_single, s_eol, }, // 0x8f
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167 { s_single, s_term, s_string, s_single, s_eol, }, // 0x90
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168 { s_single, s_term, s_string, s_single, s_eol, }, // 0x91
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169 { s_single, s_term, s_string, s_single, s_eol, }, // 0x92
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170 { s_single, s_term, s_string, s_single, s_eol, }, // 0x93
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171 { s_single, s_term, s_string, s_single, s_eol, }, // 0x94
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172 { s_single, s_term, s_string, s_single, s_eol, }, // 0x95
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173 { s_single, s_term, s_string, s_single, s_eol, }, // 0x96
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174 { s_single, s_term, s_string, s_single, s_eol, }, // 0x97
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175 { s_single, s_term, s_string, s_single, s_eol, }, // 0x98
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176 { s_single, s_term, s_string, s_single, s_eol, }, // 0x99
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177 { s_single, s_term, s_string, s_single, s_eol, }, // 0x9a
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178 { s_single, s_term, s_string, s_single, s_eol, }, // 0x9b
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179 { s_single, s_term, s_string, s_single, s_eol, }, // 0x9c
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180 { s_single, s_term, s_string, s_single, s_eol, }, // 0x9d
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181 { s_single, s_term, s_string, s_single, s_eol, }, // 0x9e
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182 { s_single, s_term, s_string, s_single, s_eol, }, // 0x9f
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183 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa0
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184 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa1
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185 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa2
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186 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa3
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187 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa4
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188 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa5
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189 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa6
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190 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa7
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191 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa8
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192 { s_single, s_term, s_string, s_single, s_eol, }, // 0xa9
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193 { s_single, s_term, s_string, s_single, s_eol, }, // 0xaa
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194 { s_single, s_term, s_string, s_single, s_eol, }, // 0xab
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195 { s_single, s_term, s_string, s_single, s_eol, }, // 0xac
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196 { s_single, s_term, s_string, s_single, s_eol, }, // 0xad
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197 { s_single, s_term, s_string, s_single, s_eol, }, // 0xae
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198 { s_single, s_term, s_string, s_single, s_eol, }, // 0xaf
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199 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb0
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200 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb1
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201 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb2
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202 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb3
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203 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb4
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204 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb5
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205 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb6
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206 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb7
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207 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb8
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208 { s_single, s_term, s_string, s_single, s_eol, }, // 0xb9
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209 { s_single, s_term, s_string, s_single, s_eol, }, // 0xba
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210 { s_single, s_term, s_string, s_single, s_eol, }, // 0xbb
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211 { s_single, s_term, s_string, s_single, s_eol, }, // 0xbc
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212 { s_single, s_term, s_string, s_single, s_eol, }, // 0xbd
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213 { s_single, s_term, s_string, s_single, s_eol, }, // 0xbe
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214 { s_single, s_term, s_string, s_single, s_eol, }, // 0xbf
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215 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc0
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216 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc1
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217 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc2
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|
218 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc3
|
|
|
219 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc4
|
|
|
220 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc5
|
|
|
221 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc6
|
|
|
222 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc7
|
|
|
223 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc8
|
|
|
224 { s_single, s_term, s_string, s_single, s_eol, }, // 0xc9
|
|
|
225 { s_single, s_term, s_string, s_single, s_eol, }, // 0xca
|
|
|
226 { s_single, s_term, s_string, s_single, s_eol, }, // 0xcb
|
|
|
227 { s_single, s_term, s_string, s_single, s_eol, }, // 0xcc
|
|
|
228 { s_single, s_term, s_string, s_single, s_eol, }, // 0xcd
|
|
|
229 { s_single, s_term, s_string, s_single, s_eol, }, // 0xce
|
|
|
230 { s_single, s_term, s_string, s_single, s_eol, }, // 0xcf
|
|
|
231 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd0
|
|
|
232 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd1
|
|
|
233 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd2
|
|
|
234 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd3
|
|
|
235 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd4
|
|
|
236 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd5
|
|
|
237 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd6
|
|
|
238 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd7
|
|
|
239 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd8
|
|
|
240 { s_single, s_term, s_string, s_single, s_eol, }, // 0xd9
|
|
|
241 { s_single, s_term, s_string, s_single, s_eol, }, // 0xda
|
|
|
242 { s_single, s_term, s_string, s_single, s_eol, }, // 0xdb
|
|
|
243 { s_single, s_term, s_string, s_single, s_eol, }, // 0xdc
|
|
|
244 { s_single, s_term, s_string, s_single, s_eol, }, // 0xdd
|
|
|
245 { s_single, s_term, s_string, s_single, s_eol, }, // 0xde
|
|
|
246 { s_single, s_term, s_string, s_single, s_eol, }, // 0xdf
|
|
|
247 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe0
|
|
|
248 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe1
|
|
|
249 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe2
|
|
|
250 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe3
|
|
|
251 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe4
|
|
|
252 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe5
|
|
|
253 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe6
|
|
|
254 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe7
|
|
|
255 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe8
|
|
|
256 { s_single, s_term, s_string, s_single, s_eol, }, // 0xe9
|
|
|
257 { s_single, s_term, s_string, s_single, s_eol, }, // 0xea
|
|
|
258 { s_single, s_term, s_string, s_single, s_eol, }, // 0xeb
|
|
|
259 { s_single, s_term, s_string, s_single, s_eol, }, // 0xec
|
|
|
260 { s_single, s_term, s_string, s_single, s_eol, }, // 0xed
|
|
|
261 { s_single, s_term, s_string, s_single, s_eol, }, // 0xee
|
|
|
262 { s_single, s_term, s_string, s_single, s_eol, }, // 0xef
|
|
|
263 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf0
|
|
|
264 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf1
|
|
|
265 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf2
|
|
|
266 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf3
|
|
|
267 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf4
|
|
|
268 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf5
|
|
|
269 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf6
|
|
|
270 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf7
|
|
|
271 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf8
|
|
|
272 { s_single, s_term, s_string, s_single, s_eol, }, // 0xf9
|
|
|
273 { s_single, s_term, s_string, s_single, s_eol, }, // 0xfa
|
|
|
274 { s_single, s_term, s_string, s_single, s_eol, }, // 0xfb
|
|
|
275 { s_single, s_term, s_string, s_single, s_eol, }, // 0xfc
|
|
|
276 { s_single, s_term, s_string, s_single, s_eol, }, // 0xfd
|
|
|
277 { s_single, s_term, s_string, s_single, s_eol, }, // 0xfe
|
|
|
278 { s_single, s_term, s_string, s_single, s_eol, }, // 0xff
|
|
|
279 };
|
|
|
280
|
|
|
281
|
|
|
282 TOKEN::TOKEN(char *fn, string_set *includes) {
|
|
|
283 pushed = false;
|
|
|
284 include_files = includes;
|
|
|
285 include(fn);
|
|
|
286 }
|
|
|
287
|
|
|
288
|
|
|
289 TOKEN::~TOKEN() {
|
|
|
290 while (!streams.empty()) pop();
|
|
|
291 }
|
|
|
292
|
|
|
293
|
|
|
294 void TOKEN::pop() {
|
|
|
295 ifstream *is = streams.front();
|
|
|
296 char *fn = filenames.front();
|
|
|
297 streams.pop_front();
|
|
|
298 filenames.pop_front();
|
|
|
299 filenamess.erase(fn);
|
|
|
300 linenumbers.pop_front();
|
|
|
301 is->close();
|
|
|
302 delete is;
|
|
|
303 }
|
|
|
304
|
|
|
305
|
|
|
306 void TOKEN::push_char(u_char c) {
|
|
|
307 pushed = true;
|
|
|
308 pushed_char = c;
|
|
|
309 }
|
|
|
310
|
|
|
311
|
|
|
312 bool TOKEN::next_char(u_char &uc) {
|
|
|
313 if (pushed) {
|
|
|
314 uc = pushed_char;
|
|
|
315 pushed = false;
|
|
|
316 return true;
|
|
|
317 }
|
|
|
318 while (!streams.empty() && streams.front()->eof()) {
|
|
|
319 pop();
|
|
|
320 }
|
|
|
321 if (streams.empty()) return false;
|
|
|
322 ifstream *is = streams.front();
|
|
|
323 uc = (u_char)is->get();
|
|
|
324 if (is->eof()) return next_char(uc);
|
|
|
325 if (uc == (u_char)'\n') {
|
|
|
326 int &line = linenumbers.front();
|
|
|
327 line++;
|
|
|
328 }
|
|
|
329 return true;
|
|
|
330 }
|
|
|
331
|
|
|
332
|
|
|
333 bool TOKEN::include(char *fn) {
|
|
|
334 string_set::iterator i = filenamess.find(fn);
|
|
|
335 if (i != filenamess.end()) {
|
|
|
336 my_syslog("redundant or recursive include file detected");
|
|
|
337 return false;
|
|
|
338 }
|
|
|
339 ifstream *is = new ifstream;
|
|
|
340 is->open(fn);
|
|
|
341 if (is->fail()) {
|
|
|
342 char buf[1000];
|
|
|
343 snprintf(buf, sizeof(buf), "include file %s not found", fn);
|
|
|
344 token_error(buf);
|
|
|
345 return false;
|
|
|
346 }
|
|
|
347 string_set &inc = *include_files;
|
|
|
348 inc.insert(fn);
|
|
|
349 streams.push_front(is);
|
|
|
350 filenames.push_front(fn);
|
|
|
351 filenamess.insert(fn);
|
|
|
352 linenumbers.push_front(1);
|
|
|
353 return true;
|
|
|
354 }
|
|
|
355
|
|
|
356
|
|
|
357 char *TOKEN::next() {
|
|
|
358 if (!pending_tokens.empty()) {
|
|
|
359 char *t = pending_tokens.front();
|
|
|
360 pending_tokens.pop_front();
|
|
|
361 return t;
|
|
|
362 }
|
|
|
363 if (streams.empty()) return NULL;
|
|
|
364 const int PENDING_LIMIT = 1000;
|
|
|
365 static u_char buffer[PENDING_LIMIT];
|
|
|
366 int count = 0;
|
|
|
367 state st = s_init;
|
|
|
368 while (true) {
|
|
|
369 if (count == (PENDING_LIMIT-1)) {
|
|
|
370 token_error("token too long");
|
|
|
371 break;
|
|
|
372 }
|
|
|
373 if (st >= end_state) {
|
|
|
374 token_error("finite state machine error");
|
|
|
375 break;
|
|
|
376 }
|
|
|
377 u_char c;
|
|
|
378 if (!next_char(c)) break;
|
|
|
379 st = parse_table[c][st];
|
|
|
380 switch (st) {
|
|
|
381 case s_string:
|
|
|
382 case s_token: {
|
|
|
383 buffer[count++] = c;
|
|
|
384 } break;
|
|
|
385
|
|
|
386 case s_term: {
|
|
|
387 push_char(c);
|
|
|
388 st = s_init;
|
|
|
389 } break;
|
|
|
390
|
|
|
391 case s_string1: {
|
|
|
392 st = s_string;
|
|
|
393 } break;
|
|
|
394
|
|
|
395 case s_string2: {
|
|
|
396 st = s_init;
|
|
|
397 } break;
|
|
|
398
|
|
|
399 case s_single: {
|
|
|
400 buffer[count++] = c;
|
|
|
401 st = s_init;
|
|
|
402 } break;
|
|
|
403
|
|
|
404 case s_ignore:
|
|
|
405 case s_eol: {
|
|
|
406 } break;
|
|
|
407
|
|
|
408
|
|
|
409 case s_slash: {
|
|
|
410 buffer[count++] = c;
|
|
|
411 if (next_char(c)) {
|
|
|
412 if (c == (u_char)'/') {
|
|
|
413 // start of ignore to eol on //
|
|
|
414 count--;
|
|
|
415 st = s_eol;
|
|
|
416 }
|
|
|
417 else {
|
|
|
418 // not a // token, just return this single /
|
|
|
419 push_char(c);
|
|
|
420 st = s_init;
|
|
|
421 }
|
|
|
422 }
|
|
|
423 else {
|
|
|
424 // cannot get another char
|
|
|
425 st = s_init;
|
|
|
426 }
|
|
|
427 } break;
|
|
|
428
|
|
|
429 default: {
|
|
|
430 token_error();
|
|
|
431 token_error("unknown state %d %s \n", st, " ");
|
|
|
432 } break;
|
|
|
433 }
|
|
|
434 if (st == s_init) break;
|
|
|
435 }
|
|
|
436
|
|
|
437 buffer[count] = '\0';
|
|
|
438 if (count == 0) return NULL;
|
|
|
439 char *t = register_string((char*)buffer);
|
|
|
440 if (t == token_include) {
|
|
|
441 char *f = next(); // should be file name
|
|
|
442 char *s = next(); // should be semicolon
|
|
|
443 if (s == token_semi) {
|
|
|
444 include(f);
|
|
|
445 return next();
|
|
|
446 }
|
|
|
447 else {
|
|
|
448 push(s);
|
|
|
449 push(f);
|
|
|
450 return t;
|
|
|
451 }
|
|
|
452 }
|
|
|
453 return t;
|
|
|
454 }
|
|
|
455
|
|
|
456
|
|
|
457 int TOKEN::nextint() {
|
|
|
458 char *t = next();
|
|
|
459 char *e;
|
|
|
460 long i = strtol(t, &e, 10);
|
|
|
461 if (*e != '\0') {
|
|
|
462 token_error("integer", t);
|
|
|
463 return 0;
|
|
|
464 }
|
|
|
465 return (int)i;
|
|
|
466 }
|
|
|
467
|
|
|
468
|
|
|
469 void TOKEN::skipeol() {
|
|
|
470 while (true) {
|
|
|
471 u_char c;
|
|
|
472 if (!next_char(c)) break;
|
|
|
473 if (c == (u_char)'\n') break;
|
|
|
474 }
|
|
|
475 }
|
|
|
476
|
|
|
477
|
|
|
478 void TOKEN::token_error(const char *err) {
|
|
|
479 token_error();
|
|
|
480 printf("%s \n", err);
|
|
|
481 }
|
|
|
482
|
|
|
483
|
|
|
484 void TOKEN::token_error(const char *fmt, int d, const char *s) {
|
|
|
485 printf(fmt, d, s);
|
|
|
486 }
|
|
|
487
|
|
|
488
|
|
|
489 void TOKEN::token_error(const char *fmt, const char *t, const char *h) {
|
|
|
490 if (!h) h = "null";
|
|
|
491 printf(fmt, t, h);
|
|
|
492 }
|
|
|
493
|
|
|
494
|
|
|
495 void TOKEN::token_error(const char *token, const char *have) {
|
|
|
496 token_error();
|
|
|
497 token_error("expecting %s, found %s \n", token, have);
|
|
|
498 }
|
|
|
499
|
|
|
500
|
|
|
501 void TOKEN::token_error() {
|
|
|
502 token_error("syntax error at line %d in file %s -- ", cur_line(), cur_fn());
|
|
|
503 }
|
|
|
504
|
