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1 /* |
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2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * Header READER.CPP |
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16 * |
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17 */ |
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18 |
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19 |
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20 #include "READER.H" |
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21 |
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22 Reader::Reader() |
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23 { |
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24 iLexAnal = NULL; |
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25 } |
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26 |
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27 boolean Reader::Open(const String& aFilename) |
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28 { |
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29 boolean state; |
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30 String string = aFilename; |
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31 if (iLexAnal != NULL) |
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32 delete iLexAnal; |
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33 iLexAnal = new LexAnal(string.Text()); |
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34 |
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35 if (iLexAnal) |
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36 { |
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37 state = etrue; |
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38 iLex =& (iLexAnal->iLex); |
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39 iLexAnal->Read(); // reads first lexical |
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40 } |
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41 else |
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42 state = efalse; |
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43 |
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44 return state; |
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45 } |
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46 |
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47 Reader::~Reader() |
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48 { |
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49 if (iLexAnal != NULL) |
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50 delete iLexAnal; |
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51 } |
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52 |
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53 boolean Reader::_EOF() |
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54 { |
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55 return ((iLex->iType) == ELexEOF); |
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56 } |
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57 |
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58 boolean Reader::NewLine() |
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59 { |
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60 boolean state; |
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61 if (iLex->iType == ELexNL) |
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62 { |
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63 iLexAnal->Read(); |
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64 state = etrue; |
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65 } |
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66 else |
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67 { |
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68 Error(String("Newline expected")); |
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69 state = efalse; |
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70 } |
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71 return state; |
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72 } |
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73 |
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74 boolean Reader::Number(int& aNumber) |
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75 { |
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76 boolean state; |
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77 if (iLex->iType == ELexNumber) |
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78 { |
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79 aNumber = iLex->iNumber; |
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80 iLexAnal->Read(); |
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81 state = etrue; |
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82 } |
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83 else |
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84 { |
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85 Error(String("Number expected")); |
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86 state = efalse; |
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87 } |
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88 return state; |
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89 } |
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90 |
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91 boolean Reader::IdentComp(const String& aIdent) |
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92 { |
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93 boolean state; |
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94 if (iLex->iType == ELexIdent) |
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95 { |
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96 if (aIdent == iLex->iText) |
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97 { |
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98 iLexAnal->Read(); |
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99 state = etrue; |
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100 } |
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101 else |
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102 state = efalse; |
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103 } |
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104 else |
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105 { |
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106 state = efalse; |
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107 } |
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108 return state; |
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109 } |
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110 |
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111 boolean Reader::IdentCopy(String& aIdent) |
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112 { |
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113 boolean state; |
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114 if (iLex->iType == ELexIdent) |
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115 { |
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116 aIdent = iLex->iText; |
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117 iLexAnal->Read(); |
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118 state = etrue; |
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119 } |
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120 else |
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121 { |
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122 Error(String("Identifier expected")); |
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123 state = efalse; |
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124 } |
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125 return state; |
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126 } |
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127 |
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128 boolean Reader::StringCopy(String& aString) |
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129 { |
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130 boolean state; |
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131 if (iLex->iType == ELexString) |
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132 { |
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133 aString = iLex->iText; |
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134 iLexAnal->Read(); |
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135 state = etrue; |
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136 } |
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137 else |
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138 { |
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139 Error(String("String expected")); |
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140 state = efalse; |
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141 } |
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142 return state; |
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143 } |
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144 |
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145 boolean Reader::Operator(char& aCh) |
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146 { |
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147 boolean state; |
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148 if (iLex->iType == ELexOperator) |
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149 { |
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150 aCh = iLex->iText[0]; |
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151 iLexAnal->Read(); |
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152 state = etrue; |
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153 } |
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154 else |
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155 { |
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156 Error(String("Operator expected")); |
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157 state = efalse; |
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158 } |
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159 return state; |
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160 } |
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161 |
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162 EXPORT_C void Reader::Error(const String& aString) |
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163 { |
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164 cerr << "Error: " << aString; |
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165 iLexAnal->Report(); |
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166 while ((iLex->iType != ELexNL) && (iLex->iType != ELexEOF)) |
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167 iLexAnal->Read(); |
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168 } |