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1
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#include "Core.h"
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2
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3
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namespace Upp {
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4
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5
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#define LLOG(x)
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6
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#define LTIMING(x)
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7
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8
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void CParser::ThrowError(const char *s) {
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9
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LLOG("CParser::Error: " << s);
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10
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LLOG(~String(term, min((int)strlen((const char *)term), 512)));
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11
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Pos pos = GetPos();
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12
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Error err(fn + Format("(%d,%d): ", line, pos.GetColumn()) + s);
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13
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14
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throw err;
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15
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}
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16
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17
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CParser& CParser::SkipComments(bool b)
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18
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{
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19
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skipcomments = b;
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20
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term = wspc;
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21
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Spaces0();
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22
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return *this;
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23
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}
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24
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25
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CParser& CParser::NestComments(bool b)
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26
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{
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27
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nestcomments = b;
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28
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term = wspc;
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29
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Spaces0();
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30
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return *this;
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31
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}
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32
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33
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bool CParser::Spaces0() {
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34
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LTIMING("Spaces");
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35
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if((byte)*term > ' ' &&
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36
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!(term[0] == '/' && term[1] == '/') &&
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37
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!(term[0] == '/' && term[1] == '*'))
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38
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return false;
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39
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for(;;) {
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40
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if(*term == LINEINFO_ESC) {
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41
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term++;
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42
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fn.Clear();
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43
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while(*term) {
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44
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if(*term == LINEINFO_ESC) {
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45
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++term;
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46
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break;
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47
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}
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48
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if(*term == '\3') {
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49
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line = atoi(++term);
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50
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while(*term) {
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51
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if(*term == LINEINFO_ESC) {
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52
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++term;
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53
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break;
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54
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}
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55
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term++;
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56
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}
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57
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break;
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58
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}
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59
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fn.Cat(*term++);
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60
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}
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61
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continue;
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62
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}
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63
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else
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64
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if(term[0] == '/' && term[1] == '/' && skipcomments) {
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65
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term += 2;
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66
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while(*term && *term != '\n')
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67
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term++;
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68
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}
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69
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else
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70
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if(term[0] == '/' && term[1] == '*' && skipcomments) {
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71
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if(nestcomments == false) {
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72
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term += 2;
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73
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while(*term) {
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74
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if(term[0] == '*' && term[1] == '/') {
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75
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term += 2;
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76
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break;
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77
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}
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78
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if(*term++ == '\n') line++;
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79
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}
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80
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}
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81
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else {
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82
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int count = 1;
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83
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term += 2;
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84
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while(*term) {
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85
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if(term[0] == '*' && term[1] == '/') {
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86
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term += 2;
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87
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count--;
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88
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if (count == 0)
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89
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break;
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90
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}
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91
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else if(term[0] == '/' && term[1] == '*')
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92
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count++;
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93
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94
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if(*term++ == '\n') line++;
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95
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}
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96
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}
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97
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}
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98
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if(!*term) break;
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99
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if((byte)*term > ' ') break;
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100
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if(*term == '\n') {
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101
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line++;
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102
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lineptr = term + 1;
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103
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}
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104
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term++;
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105
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}
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106
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return true;
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107
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}
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108
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109
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String CParser::LineInfoComment(const String& file, int line, int column)
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110
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{
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111
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return String().Cat() << (char)LINEINFO_ESC << file << '\3'
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112
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<< line << '\3' << column << (char)LINEINFO_ESC;
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113
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}
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114
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115
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String CParser::GetLineInfoComment(int tabsize) const
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116
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{
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117
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return LineInfoComment(GetFileName(), GetLine(), GetColumn(tabsize));
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118
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}
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119
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120
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const char *CParser::IsId0(const char *s) const {
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121
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const char *t = term + 1;
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122
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s++;
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123
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while(*s) {
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124
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if(*t != *s)
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125
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return NULL;
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126
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t++;
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127
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s++;
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128
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}
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129
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return IsAlNum(*t) || *t == '_' ? NULL : t;
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130
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}
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131
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132
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bool CParser::Id0(const char *s) {
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133
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LTIMING("Id");
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134
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const char *t = IsId0(s);
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135
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if(!t)
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136
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return false;
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137
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term = t;
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138
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DoSpaces();
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139
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return true;
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140
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}
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141
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142
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void CParser::PassId(const char *s) throw(Error) {
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143
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LTIMING("PassId");
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144
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if(!Id(s))
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145
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ThrowError(String("missing '") + s + "\'");
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146
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}
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147
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148
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void CParser::PassChar(char c) throw(Error) {
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149
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LTIMING("PassChar");
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150
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if(!Char(c))
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151
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ThrowError(String("missing '") + c + "\'");
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152
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}
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153
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154
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void CParser::PassChar2(char c1, char c2) throw(Error) {
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155
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LTIMING("PassChar2");
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156
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if(!Char2(c1, c2))
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157
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ThrowError(String("missing '") + c1 + c2 + "\'");
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158
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}
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159
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160
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void CParser::PassChar3(char c1, char c2, char c3) throw(Error) {
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161
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LTIMING("PassChar3");
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162
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if(!Char3(c1, c2, c3))
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163
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ThrowError(String("missing '") + c1 + c2 + c3 + "\'");
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164
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}
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165
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166
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String CParser::ReadId() throw(Error) {
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167
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LTIMING("ReadId");
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168
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if(!IsId())
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169
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ThrowError("missing id");
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170
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String result;
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171
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const char *b = term;
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172
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const char *p = b;
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173
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while(iscid(*p))
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174
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p++;
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175
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term = p;
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176
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DoSpaces();
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177
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return String(b, (int)(uintptr_t)(p - b));
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178
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}
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179
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180
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String CParser::ReadIdt() throw(Error) {
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181
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if(!IsId())
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182
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ThrowError("missing id");
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183
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StringBuffer result;
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184
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int lvl = 0;
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185
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while(IsAlNum(*term) || *term == '_' || *term == '<' || *term == '>' ||
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186
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*term == ':' || (*term == ',' || *term == ' ' ) && lvl > 0 ) {
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187
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if(*term == '<') lvl++;
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188
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if(*term == '>') lvl--;
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189
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result.Cat(*term++);
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190
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}
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191
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DoSpaces();
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192
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return result;
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193
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}
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194
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195
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bool CParser::IsInt() const {
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196
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LTIMING("IsInt");
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197
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const char *t = term;
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198
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if(*t == '-' || *t == '+') {
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199
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t++;
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200
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while(*t <= ' ')
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201
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t++;
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202
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}
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203
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return IsDigit(*t);
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204
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}
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205
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206
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int CParser::Sgn()
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207
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{
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208
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int sign = 1;
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209
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if(*term == '-') {
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210
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sign = -1;
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211
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term++;
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212
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}
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213
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else
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214
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if(*term == '+')
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215
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term++;
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216
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Spaces();
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217
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return sign;
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218
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}
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219
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220
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int CParser::ReadInt() throw(Error) {
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221
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LTIMING("ReadInt");
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222
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int sign = Sgn();
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223
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uint32 n = ReadNumber(10);
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224
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if(sign > 0 ? n > INT_MAX : n > (uint32)INT_MAX + 1)
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225
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ThrowError("number is too big");
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226
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return sign * (int)n;
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227
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}
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228
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229
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int CParser::ReadInt(int min, int max) throw(Error)
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230
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{
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231
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int n = ReadInt();
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232
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if(n < min || n > max)
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233
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ThrowError("number is out of range");
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234
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return n;
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235
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}
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236
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237
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int64 CParser::ReadInt64() throw(Error)
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238
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{
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239
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LTIMING("ReadInt64");
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240
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int sign = Sgn();
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241
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uint64 n = ReadNumber64(10);
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242
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if(sign > 0 ? n > INT64_MAX : n > (uint64)INT64_MAX + 1)
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243
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ThrowError("number is too big");
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244
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return sign * n;
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245
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}
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246
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247
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int64 CParser::ReadInt64(int64 min, int64 max) throw(Error)
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248
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{
|
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249
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int64 n = ReadInt64();
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250
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if(n < min || n > max)
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251
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ThrowError("number is out of range");
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252
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return n;
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253
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}
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254
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|
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255
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bool CParser::IsNumber(int base) const
|
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256
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{
|
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257
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if(IsDigit(*term))
|
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258
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return true;
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259
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int q = ToUpper(*term) - 'A';
|
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260
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return q >= 0 && q < base - 10;
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261
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}
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|
262
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|
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263
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uint32 CParser::ReadNumber(int base) throw(Error)
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264
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{
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265
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LTIMING("ReadNumber");
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266
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uint32 n = 0;
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267
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int q = ctoi(*term);
|
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268
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if(q < 0 || q >= base)
|
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269
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ThrowError("missing number");
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270
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for(;;) {
|
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271
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int c = ctoi(*term);
|
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272
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if(c < 0 || c >= base)
|
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273
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break;
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274
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uint32 n1 = n;
|
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275
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n = base * n + c;
|
|
276
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if(n1 > n)
|
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277
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ThrowError("number is too big");
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278
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term++;
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279
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}
|
|
280
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DoSpaces();
|
|
281
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return n;
|
|
282
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}
|
|
283
|
|
|
284
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uint64 CParser::ReadNumber64(int base) throw(Error)
|
|
285
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{
|
|
286
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LTIMING("ReadNumber");
|
|
287
|
uint64 n = 0;
|
|
288
|
int q = ctoi(*term);
|
|
289
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if(q < 0 || q >= base)
|
|
290
|
ThrowError("missing number");
|
|
291
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for(;;) {
|
|
292
|
int c = ctoi(*term);
|
|
293
|
if(c < 0 || c >= base)
|
|
294
|
break;
|
|
295
|
uint64 n1 = n;
|
|
296
|
n = base * n + c;
|
|
297
|
if(n1 > n)
|
|
298
|
ThrowError("number is too big");
|
|
299
|
term++;
|
|
300
|
}
|
|
301
|
DoSpaces();
|
|
302
|
return n;
|
|
303
|
}
|
|
304
|
|
|
305
|
double CParser::ReadDouble() throw(Error)
|
|
306
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{
|
|
307
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LTIMING("ReadDouble");
|
|
308
|
int sign = Sgn();
|
|
309
|
if(!IsDigit(*term) && *term != '.')
|
|
310
|
ThrowError("missing number");
|
|
311
|
double n = 0;
|
|
312
|
while(IsDigit(*term))
|
|
313
|
n = 10 * n + *term++ - '0';
|
|
314
|
if(Char('.')) {
|
|
315
|
double q = 1;
|
|
316
|
while(IsDigit(*term)) {
|
|
317
|
q = q / 10;
|
|
318
|
n += q * (*term++ - '0');
|
|
319
|
}
|
|
320
|
}
|
|
321
|
if(Char('e') || Char('E'))
|
|
322
|
n *= pow(10.0, ReadInt());
|
|
323
|
DoSpaces();
|
|
324
|
n = sign * n;
|
|
325
|
if(!IsFin(n))
|
|
326
|
ThrowError("number is too big");
|
|
327
|
return n;
|
|
328
|
}
|
|
329
|
|
|
330
|
String CParser::ReadOneString(int delim, bool chkend) throw(Error) {
|
|
331
|
if(!IsChar(delim))
|
|
332
|
ThrowError("missing string");
|
|
333
|
term++;
|
|
334
|
StringBuffer result;
|
|
335
|
for(;;) {
|
|
336
|
if(*term == delim) {
|
|
337
|
term++;
|
|
338
|
DoSpaces();
|
|
339
|
return result;
|
|
340
|
}
|
|
341
|
else
|
|
342
|
if(*term == '\\') {
|
|
343
|
switch(*++term) {
|
|
344
|
case 'a': result.Cat('\a'); term++; break;
|
|
345
|
case 'b': result.Cat('\b'); term++; break;
|
|
346
|
case 't': result.Cat('\t'); term++; break;
|
|
347
|
case 'v': result.Cat('\v'); term++; break;
|
|
348
|
case 'n': result.Cat('\n'); term++; break;
|
|
349
|
case 'r': result.Cat('\r'); term++; break;
|
|
350
|
case 'f': result.Cat('\f'); term++; break;
|
|
351
|
case 'x': {
|
|
352
|
int hex = 0;
|
|
353
|
if(IsXDigit(*++term)) {
|
|
354
|
hex = ctoi(*term);
|
|
355
|
if(IsXDigit(*++term)) {
|
|
356
|
hex = 16 * hex + (*term >= 'A' ? ToUpper(*term) - 'A' + 10 : *term - '0');
|
|
357
|
term++;
|
|
358
|
}
|
|
359
|
}
|
|
360
|
result.Cat(hex);
|
|
361
|
break;
|
|
362
|
}
|
|
363
|
case 'u':
|
|
364
|
if(uescape) {
|
|
365
|
int hex = 0;
|
|
366
|
if(IsXDigit(*++term)) {
|
|
367
|
hex = ctoi(*term);
|
|
368
|
if(IsXDigit(*++term)) {
|
|
369
|
hex = 16 * hex + (*term >= 'A' ? ToUpper(*term) - 'A' + 10 : *term - '0');
|
|
370
|
if(IsXDigit(*++term)) {
|
|
371
|
hex = 16 * hex + (*term >= 'A' ? ToUpper(*term) - 'A' + 10 : *term - '0');
|
|
372
|
if(IsXDigit(*++term)) {
|
|
373
|
hex = 16 * hex + (*term >= 'A' ? ToUpper(*term) - 'A' + 10 : *term - '0');
|
|
374
|
term++;
|
|
375
|
}
|
|
376
|
}
|
|
377
|
}
|
|
378
|
}
|
|
379
|
result.Cat(WString(hex, 1).ToString());
|
|
380
|
}
|
|
381
|
else
|
|
382
|
result.Cat(*term++);
|
|
383
|
break;
|
|
384
|
default:
|
|
385
|
if(*term >= '0' && *term <= '7') {
|
|
386
|
int oct = *term++ - '0';
|
|
387
|
if(*term >= '0' && *term <= '7')
|
|
388
|
oct = 8 * oct + *term++ - '0';
|
|
389
|
if(*term >= '0' && *term <= '7')
|
|
390
|
oct = 8 * oct + *term++ - '0';
|
|
391
|
result.Cat(oct);
|
|
392
|
}
|
|
393
|
else
|
|
394
|
result.Cat(*term++);
|
|
395
|
break;
|
|
396
|
}
|
|
397
|
}
|
|
398
|
else {
|
|
399
|
if((byte)*term < ' ' && *term != '\t') {
|
|
400
|
if(chkend) {
|
|
401
|
ThrowError("Unterminated string");
|
|
402
|
return result;
|
|
403
|
}
|
|
404
|
if(*term == '\0')
|
|
405
|
return result;
|
|
406
|
}
|
|
407
|
result.Cat(*term++);
|
|
408
|
}
|
|
409
|
}
|
|
410
|
DoSpaces();
|
|
411
|
return result;
|
|
412
|
}
|
|
413
|
|
|
414
|
String CParser::ReadOneString(bool chkend) throw(Error)
|
|
415
|
{
|
|
416
|
return ReadOneString('\"', chkend);
|
|
417
|
}
|
|
418
|
|
|
419
|
String CParser::ReadString(int delim, bool chkend) throw(Error) {
|
|
420
|
LTIMING("ReadString");
|
|
421
|
String result;
|
|
422
|
do
|
|
423
|
result.Cat(ReadOneString(delim, chkend));
|
|
424
|
while(IsChar(delim));
|
|
425
|
return result;
|
|
426
|
}
|
|
427
|
|
|
428
|
String CParser::ReadString(bool chkend) throw(Error)
|
|
429
|
{
|
|
430
|
return ReadString('\"', chkend);
|
|
431
|
}
|
|
432
|
|
|
433
|
char CParser::GetChar()
|
|
434
|
{
|
|
435
|
char c = *term++;
|
|
436
|
if(c == '\n')
|
|
437
|
line++;
|
|
438
|
return c;
|
|
439
|
}
|
|
440
|
|
|
441
|
void CParser::SkipTerm()
|
|
442
|
{
|
|
443
|
LTIMING("SkipTerm");
|
|
444
|
if(IsId())
|
|
445
|
while(iscid(*term))
|
|
446
|
term++;
|
|
447
|
else
|
|
448
|
if(IsNumber())
|
|
449
|
while(IsDigit(*term))
|
|
450
|
term++;
|
|
451
|
else
|
|
452
|
if(IsString())
|
|
453
|
ReadString();
|
|
454
|
else
|
|
455
|
if(IsChar('\''))
|
|
456
|
ReadString('\'', false);
|
|
457
|
else
|
|
458
|
if(*term) {
|
|
459
|
if(*term == '\n')
|
|
460
|
line++;
|
|
461
|
term++;
|
|
462
|
}
|
|
463
|
DoSpaces();
|
|
464
|
}
|
|
465
|
|
|
466
|
CParser::Pos CParser::GetPos() const
|
|
467
|
{
|
|
468
|
Pos p;
|
|
469
|
p.line = line;
|
|
470
|
p.fn = fn;
|
|
471
|
p.ptr = term;
|
|
472
|
p.wspc = wspc;
|
|
473
|
p.lineptr = lineptr;
|
|
474
|
return p;
|
|
475
|
}
|
|
476
|
|
|
477
|
int CParser::Pos::GetColumn(int tabsize) const
|
|
478
|
{
|
|
479
|
int pos = 1;
|
|
480
|
for(const char *s = lineptr; s < ptr; s++) {
|
|
481
|
if(*s == CParser::LINEINFO_ESC) {
|
|
482
|
s++;
|
|
483
|
while(s < ptr && *s != CParser::LINEINFO_ESC)
|
|
484
|
if(*s++ == '\3')
|
|
485
|
pos = atoi(s);
|
|
486
|
}
|
|
487
|
else
|
|
488
|
if(*s == '\t')
|
|
489
|
pos = (pos + tabsize - 1) / tabsize * tabsize + 1;
|
|
490
|
else
|
|
491
|
pos++;
|
|
492
|
}
|
|
493
|
return pos;
|
|
494
|
}
|
|
495
|
|
|
496
|
int CParser::GetColumn(int tabsize) const
|
|
497
|
{
|
|
498
|
return GetPos().GetColumn(tabsize);
|
|
499
|
}
|
|
500
|
|
|
501
|
void CParser::SetPos(const CParser::Pos& p)
|
|
502
|
{
|
|
503
|
LLOG("SetPos " << p.fn << ":" << p.line);
|
|
504
|
line = p.line;
|
|
505
|
fn = p.fn;
|
|
506
|
term = p.ptr;
|
|
507
|
wspc = p.wspc;
|
|
508
|
lineptr = p.lineptr;
|
|
509
|
if(skipspaces)
|
|
510
|
DoSpaces();
|
|
511
|
}
|
|
512
|
|
|
513
|
CParser::CParser(const char *ptr)
|
|
514
|
: term(ptr), wspc(ptr), lineptr(ptr)
|
|
515
|
{
|
|
516
|
line = 1;
|
|
517
|
skipspaces = skipcomments = true;
|
|
518
|
nestcomments = false;
|
|
519
|
uescape = false;
|
|
520
|
Spaces();
|
|
521
|
}
|
|
522
|
|
|
523
|
CParser::CParser(const char *ptr, const char *fn, int line)
|
|
524
|
: term(ptr), wspc(ptr), lineptr(ptr), line(line), fn(fn)
|
|
525
|
{
|
|
526
|
skipspaces = skipcomments = true;
|
|
527
|
nestcomments = false;
|
|
528
|
uescape = false;
|
|
529
|
Spaces();
|
|
530
|
}
|
|
531
|
|
|
532
|
CParser::CParser()
|
|
533
|
{
|
|
534
|
term = lineptr = wspc = NULL;
|
|
535
|
line = 0;
|
|
536
|
skipspaces = skipcomments = true;
|
|
537
|
nestcomments = false;
|
|
538
|
uescape = false;
|
|
539
|
}
|
|
540
|
|
|
541
|
void CParser::Set(const char *_ptr, const char *_fn, int _line)
|
|
542
|
{
|
|
543
|
term = lineptr = wspc = _ptr;
|
|
544
|
fn = _fn;
|
|
545
|
line = _line;
|
|
546
|
if(skipspaces)
|
|
547
|
Spaces();
|
|
548
|
LLOG("Set " << fn << ":" << line);
|
|
549
|
}
|
|
550
|
|
|
551
|
void CParser::Set(const char *_ptr)
|
|
552
|
{
|
|
553
|
Set(_ptr, "", 1);
|
|
554
|
}
|
|
555
|
|
|
556
|
inline void NextCStringLine(String& t, const char *linepfx, int& pl)
|
|
557
|
{
|
|
558
|
t << "\"\r\n" << (linepfx ? linepfx : "") << "\"";
|
|
559
|
pl = t.GetLength();
|
|
560
|
}
|
|
561
|
|
|
562
|
inline int HexDigit(int c)
|
|
563
|
{
|
|
564
|
return "0123456789ABCDEF"[c & 15];
|
|
565
|
}
|
|
566
|
|
|
567
|
String AsCString(const char *s, const char *lim, int linemax, const char *linepfx, dword flags)
|
|
568
|
{
|
|
569
|
String t;
|
|
570
|
t.Cat('\"');
|
|
571
|
int pl = 0;
|
|
572
|
bool wasspace = false;
|
|
573
|
while(s < lim) {
|
|
574
|
if(t.GetLength() - pl > linemax && (!(flags & ASCSTRING_SMART) || wasspace))
|
|
575
|
NextCStringLine(t, linepfx, pl);
|
|
576
|
wasspace = false;
|
|
577
|
switch(*s) {
|
|
578
|
case '\a': t.Cat("\\a"); break;
|
|
579
|
case '\b': t.Cat("\\b"); break;
|
|
580
|
case '\f': t.Cat("\\f"); break;
|
|
581
|
case '\t': t.Cat("\\t"); break;
|
|
582
|
case '\v': t.Cat("\\v"); break;
|
|
583
|
case '\r': t.Cat("\\r"); break;
|
|
584
|
case '\"': t.Cat("\\\""); break;
|
|
585
|
case '\\': t.Cat("\\\\"); break;
|
|
586
|
case '\n': t.Cat("\\n"); wasspace = true; break;
|
|
587
|
default:
|
|
588
|
if(byte(*s) < 32 || (byte)*s >= 0x7f && (flags & ASCSTRING_OCTALHI) || (byte)*s == 0xff || (byte)*s == 0x7f) {
|
|
589
|
if(flags & ASCSTRING_JSON) {
|
|
590
|
char h[6];
|
|
591
|
int q = (byte)*s;
|
|
592
|
h[0] = '\\';
|
|
593
|
h[1] = 'u';
|
|
594
|
h[2] = '0';
|
|
595
|
h[3] = '0';
|
|
596
|
h[4] = HexDigit(q >> 4);
|
|
597
|
h[5] = HexDigit(q);
|
|
598
|
t.Cat(h, 6);
|
|
599
|
}
|
|
600
|
else {
|
|
601
|
char h[4];
|
|
602
|
int q = (byte)*s;
|
|
603
|
h[0] = '\\';
|
|
604
|
h[1] = (3 & (q >> 6)) + '0';
|
|
605
|
h[2] = (7 & (q >> 3)) + '0';
|
|
606
|
h[3] = (7 & q) + '0';
|
|
607
|
t.Cat(h, 4);
|
|
608
|
}
|
|
609
|
}
|
|
610
|
else {
|
|
611
|
t.Cat(*s);
|
|
612
|
if(*s == ' ')
|
|
613
|
wasspace = true;
|
|
614
|
}
|
|
615
|
break;
|
|
616
|
}
|
|
617
|
s++;
|
|
618
|
}
|
|
619
|
t.Cat('\"');
|
|
620
|
return t;
|
|
621
|
}
|
|
622
|
|
|
623
|
String AsCString(const char *s, int linemax, const char *linepfx, dword flags)
|
|
624
|
{
|
|
625
|
return AsCString(s, s + strlen(s), linemax, linepfx, flags);
|
|
626
|
}
|
|
627
|
|
|
628
|
String AsCString(const String& s, int linemax, const char *linepfx, dword flags)
|
|
629
|
{
|
|
630
|
return AsCString(s, s.End(), linemax, linepfx, flags);
|
|
631
|
}
|
|
632
|
|
|
633
|
}
|