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annotate trunk/src/dil/Information.d @ 486:bd176bc73e43

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Fixed a few things in the Parser. Refactored some code that used parseArguments() to using parseExpressionList(). Added calls to set() and tidied up the code of the Parser a bit. Fixed parsing DotIdentifier in parseAsmPrimaryExpression(). Added charLiteral member to class CharExpression. Added class InformationManager. Added member infoMan to class Scope.
author Aziz K?ksal <aziz.koeksal@gmail.com>
date Sat, 01 Dec 2007 18:22:56 +0100
parents cac9c8d637ad
children 47be6bfe39cd
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1 /++
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2 Author: Aziz Köksal
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3 License: GPL3
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4 +/
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5 module dil.Information;
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6 import dil.Messages;
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7 import common;
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8
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9 enum InfoType
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10 {
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11 Lexer,
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12 Parser,
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13 Semantic
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14 }
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15
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16 class Information
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17 {
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18 MID id;
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19 InfoType type;
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20 Location location;
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21 uint column;
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22 string message;
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23
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24 this(InfoType type, MID id, Location location, string message)
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25 {
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26 assert(location !is null);
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27 this.id = id;
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28 this.type = type;
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29 this.location = location;
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30 this.message = message;
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31 }
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32
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33 string getMsg()
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34 {
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35 return this.message;
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36 }
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37
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38 size_t loc()
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39 {
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40 return location.lineNum;
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41 }
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42
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43 size_t col()
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44 {
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45 if (column == 0)
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46 column = location.calculateColumn();
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47 return column;
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48 }
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49
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50 string filePath()
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51 {
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52 return location.filePath;
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53 }
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54 }
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55
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56 class InformationManager
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57 {
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58 Information[] info;
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59 }
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60
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61 final class Location
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62 {
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63 char[] filePath;
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64 size_t lineNum;
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65 char* lineBegin, to; // Used to calculate column.
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66
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67 this(char[] filePath, size_t lineNum)
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68 {
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69 set(filePath, lineNum);
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70 }
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71
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72 this(char[] filePath, size_t lineNum, char* lineBegin, char* to)
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73 {
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74 set(filePath, lineNum, lineBegin, to);
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75 }
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76
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77 Location clone()
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78 {
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79 return new Location(filePath, lineNum, lineBegin, to);
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80 }
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81
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82 void set(char[] filePath, size_t lineNum)
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83 {
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84 set(filePath, lineNum, null, null);
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85 }
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86
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87 void set(char[] filePath, size_t lineNum, char* lineBegin, char* to)
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88 {
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89 this.filePath = filePath;
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90 set(lineNum, lineBegin, to);
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91 }
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92
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93 void set(size_t lineNum, char* lineBegin, char* to)
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94 {
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95 assert(lineBegin !is null && to !is null);
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96 assert(lineBegin <= to);
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97 this.lineNum = lineNum;
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98 this.lineBegin = lineBegin;
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99 this.to = to;
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100 }
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101
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102 void setFilePath(char[] filePath)
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103 {
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104 this.filePath = filePath;
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105 }
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106
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107 /++
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108 This is a primitive method to count the number of characters in a string.
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109 Unicode compound characters and other special characters are not
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110 taken into account.
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111 +/
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112 uint calculateColumn()
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113 {
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114 uint col;
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115 auto p = lineBegin;
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116 for (; p <= to; ++p)
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117 {
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118 assert(delegate ()
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119 {
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120 const char[3] LS = \u2028;
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121 const char[3] PS = \u2029;
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122 // Check that there is no newline between p and to.
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123 // But 'to' may point to a newline.
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124 if (p != to && (*p == '\n' || *p == '\r'))
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125 return false;
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126 if (to-p >= 2)
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127 {
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128 if (*p == LS[0] && p[1] == LS[1] && (p[2] == LS[2] || p[2] == PS[2]))
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129 return false;
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130 }
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131 return true;
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132 }() == true
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133 );
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134
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135 // Skip this byte if it is a trail byte of a UTF-8 sequence.
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136 if ((*p & 0xC0) == 0x80)
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137 continue; // *p == 0b10xx_xxxx
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138 // Only count ASCII characters and the first byte of a UTF-8 sequence.
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139 ++col;
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140 }
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141 return col;
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142 }
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143 }