1 | ' Classes/System/String.ab
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2 |
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3 | #require <basic/function.sbp>
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4 | #require <Classes/System/Text/StringBuilder.ab>
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5 | #require <Classes/ActiveBasic/Strings/Strings.ab>
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6 |
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7 | #ifdef __STRING_IS_NOT_ALWAYS_UNICODE
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8 |
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9 | #ifndef UNICODE
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10 | TypeDef StrChar = Char
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11 | #define __STRING_IS_NOT_UNICODE
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12 | #endif
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13 |
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14 | #endif
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15 |
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16 | #ifndef __STRING_IS_NOT_UNICODE
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17 | TypeDef StrChar = WCHAR
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18 |
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19 | #ifdef UNICODE
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20 | #define __STRING_IS_UNICODE
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21 | #else
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22 | #define __STRING_UNICODE_WINDOWS_ANSI
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23 | #endif
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24 | #endif
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25 |
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26 | Namespace System
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27 |
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28 | Class String
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29 | ' Inherits IComparable, ICloneable, IConvertible, IEnumerable
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30 |
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31 | m_Length As Long
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32 | Chars As *StrChar
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33 |
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34 | Sub validPointerCheck(p As VoidPtr, size = 1 As Long)
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35 | If p As ULONG_PTR < &h10000 Then
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36 | 'Throw ArgumentException
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37 | Debug
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38 | ElseIf IsBadReadPtr(p, size As ULONG_PTR) Then
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39 | 'Throw ArgumentException
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40 | Debug
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41 | End If
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42 | End Sub
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43 | Public
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44 | Static Const Empty = New String
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45 |
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46 | Sub String()
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47 | ' Chars = 0
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48 | ' m_Length = 0
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49 | End Sub
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50 |
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51 | Sub String(initStr As PCWSTR)
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52 | validPointerCheck(initStr)
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53 | Assign(initStr, lstrlenW(initStr))
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54 | End Sub
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55 |
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56 | Sub String(initStr As PCWSTR, length As Long)
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57 | validPointerCheck(initStr, length)
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58 | Assign(initStr, length)
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59 | End Sub
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60 |
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61 | Sub String(initStr As PCWSTR, start As Long, length As Long)
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62 | If start < 0 Or length Or start + length < 0 Then
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63 | Throw New ArgumentOutOfRangeException("String constractor: One or more arguments are out of range value.", "start or length or both")
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64 | End If
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65 | validPointerCheck(initStr + start, length)
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66 | Assign(initStr + start, length)
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67 | End Sub
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68 |
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69 | Sub String(initStr As PCSTR)
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70 | validPointerCheck(initStr)
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71 | Assign(initStr, lstrlenA(initStr))
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72 | End Sub
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73 |
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74 | Sub String(initStr As PCSTR, length As Long)
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75 | validPointerCheck(initStr, length)
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76 | Assign(initStr, length)
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77 | End Sub
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78 |
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79 | Sub String(initStr As PCSTR, start As Long, length As Long)
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80 | If start < 0 Or length < 0 Then
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81 | Throw New ArgumentOutOfRangeException("String constructor: One or more arguments are out of range value.", "start or length or both")
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82 | End If
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83 | validPointerCheck(initStr + start, length)
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84 | Assign(initStr + start, length)
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85 | End Sub
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86 |
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87 | Sub String(initStr As String)
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88 | If Not String.IsNullOrEmpty(initStr) Then
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89 | Assign(initStr.Chars, initStr.m_Length)
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90 | End If
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91 | End Sub
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92 |
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93 | Sub String(initChar As StrChar, length As Long)
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94 | AllocStringBuffer(length)
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95 | ActiveBasic.Strings.ChrFill(Chars, length, initChar)
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96 | Chars[length] = 0
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97 | End Sub
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98 |
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99 | Sub String(sb As Text.StringBuilder)
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100 | Chars = StrPtr(sb)
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101 | m_Length = sb.Length
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102 | sb.__Stringized()
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103 | End Sub
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104 |
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105 | Const Function Length() As Long
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106 | Return m_Length
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107 | End Function
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108 |
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109 | Function Operator() As *StrChar
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110 | Return Chars
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111 | End Function
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112 |
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113 | Const Function Operator [] (n As Long) As StrChar
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114 | rangeCheck(n)
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115 | Return Chars[n]
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116 | End Function
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117 |
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118 | Const Function Operator + (y As PCSTR) As String
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119 | If y = 0 Then
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120 | Return This
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121 | Else
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122 | Return Concat(y, lstrlenA(y))
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123 | End If
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124 | End Function
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125 |
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126 | Const Function Operator + (y As PCWSTR) As String
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127 | If y = 0 Then
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128 | Return This
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129 | Else
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130 | Return Concat(y, lstrlenW(y))
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131 | End If
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132 | End Function
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133 |
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134 | Const Function Operator + (y As String) As String
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135 | If ActiveBasic.IsNothing(y) Then
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136 | Return This
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137 | Else
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138 | Return Concat(y.Chars, y.m_Length)
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139 | End If
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140 | End Function
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141 |
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142 | Const Function Operator & (y As PCSTR) As String
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143 | Return This + y
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144 | End Function
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145 |
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146 | Const Function Operator & (y As PCWSTR) As String
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147 | Return This + y
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148 | End Function
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149 |
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150 | Const Function Operator & (y As String) As String
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151 | Return This + y
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152 | End Function
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153 |
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154 | Const Function Operator == (y As String) As Boolean
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155 | Return String.Compare(This, y) = 0
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156 | End Function
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157 |
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158 | Const Function Operator == (y As *StrChar) As Boolean
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159 | Return String.Compare(This, y) = 0
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160 | End Function
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161 |
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162 | Const Function Operator <> (y As String) As Boolean
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163 | Return String.Compare(This, y) <> 0
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164 | End Function
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165 |
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166 | Const Function Operator <> (y As *StrChar) As Boolean
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167 | Return String.Compare(This, y) <> 0
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168 | End Function
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169 |
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170 | Const Function Operator < (y As String) As Boolean
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171 | Return String.Compare(This, y) < 0
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172 | End Function
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173 |
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174 | Const Function Operator < (y As *StrChar) As Boolean
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175 | Return String.Compare(This, y) < 0
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176 | End Function
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177 |
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178 | Const Function Operator > (y As String) As Boolean
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179 | Return String.Compare(This, y) > 0
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180 | End Function
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181 |
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182 | Const Function Operator > (y As *StrChar) As Boolean
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183 | Return String.Compare(This, y) > 0
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184 | End Function
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185 |
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186 | Const Function Operator <= (y As String) As Boolean
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187 | Return String.Compare(This, y) <= 0
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188 | End Function
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189 |
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190 | Const Function Operator <= (y As *StrChar) As Boolean
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191 | Return String.Compare(This, y) <= 0
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192 | End Function
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193 |
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194 | Const Function Operator >= (y As String) As Boolean
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195 | Return String.Compare(This, y) >= 0
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196 | End Function
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197 |
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198 | Const Function Operator >= (y As *StrChar) As Boolean
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199 | Return String.Compare(This, y) >= 0
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200 | End Function
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201 |
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202 | Static Function Compare(x As String, y As String) As Long
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203 | Return CompareOrdinal(x, y)
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204 | End Function
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205 |
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206 | Public
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207 | Static Function Compare(x As String, indexX As Long, y As String, indexY As Long, length As Long) As Long
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208 | Return String.CompareOrdinal(x, indexX, y, indexY, length)
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209 | End Function
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210 |
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211 | Static Function CompareOrdinal(x As String, y As String) As Long
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212 | Return String.CompareOrdinal(x.Chars, y.Chars)
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213 | End Function
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214 |
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215 | Static Function CompareOrdinal(x As String, indexX As Long, y As String, indexY As Long, length As Long) As Long
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216 | Return String.CompareOrdinal(x.Chars, indexX, y.Chars, indexY, length)
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217 | End Function
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218 | Private
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219 | Static Function Compare(x As String, y As *StrChar) As Long
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220 | Return String.CompareOrdinal(x, y)
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221 | End Function
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222 |
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223 | Static Function CompareOrdinal(x As String, y As *StrChar) As Long
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224 | Return String.CompareOrdinal(x.Chars, y)
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225 | End Function
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226 |
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227 | Static Function CompareOrdinal(x As *StrChar, y As *StrChar) As Long
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228 | If x = 0 Then
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229 | If y = 0 Then
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230 | Return 0
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231 | Else
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232 | Return -1
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233 | End If
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234 | ElseIf y = 0 Then
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235 | Return 1
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236 | End If
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237 | Return ActiveBasic.Strings.StrCmp(x, y)
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238 | End Function
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239 |
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240 | Static Function CompareOrdinal(x As *StrChar, indexX As Long, y As *StrChar, indexY As Long, length As Long) As Long
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241 | If x = 0 Then
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242 | If y = 0 Then
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243 | Return 0
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244 | Else
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245 | Return -1
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246 | End If
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247 | ElseIf y = 0 Then
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248 | Return 1
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249 | End If
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250 | Return ActiveBasic.Strings.ChrCmp(VarPtr(x[indexX]), VarPtr(y[indexY]), length As SIZE_T)
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251 | End Function
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252 | Public
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253 | Function CompareTo(y As String) As Long
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254 | Return String.Compare(This, y)
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255 | End Function
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256 |
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257 | Function CompareTo(y As Object) As Long
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258 | If Not Object.Equals(This.GetType(), y.GetType()) Then
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259 | Throw New ArgumentException("String.CompareTo: An argument is out of range value.", "y")
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260 | End If
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261 | Return CompareTo(y As String)
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262 | End Function
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263 |
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264 | Function Equals(s As String) As Boolean
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265 | Return This = s
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266 | End Function
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267 |
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268 | Override Function Equals(s As Object) As Boolean
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269 | If Object.Equals( This.GetType(), s.GetType() ) Then
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270 | Return This.Equals(s As String)
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271 | End If
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272 | Return False
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273 | End Function
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274 |
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275 | Const Function StrPtr() As *StrChar
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276 | Return Chars
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277 | End Function
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278 | Private
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279 |
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280 | Sub Assign(text As PCSTR, textLengthA As Long)
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281 | #ifdef __STRING_IS_NOT_UNICODE
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282 | AssignFromStrChar(text, textLengthA)
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283 | #else
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284 | Dim textLengthW = MultiByteToWideChar(CP_THREAD_ACP, 0, text, textLengthA, 0, 0)
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285 | If AllocStringBuffer(textLengthW) <> 0 Then
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286 | MultiByteToWideChar(CP_THREAD_ACP, 0, text, textLengthA, Chars, textLengthW)
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287 | Chars[textLengthW] = 0
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288 | End If
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289 | #endif
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290 | End Sub
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291 |
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292 | Sub Assign(text As PCWSTR, textLengthW As Long)
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293 | #ifdef __STRING_IS_NOT_UNICODE
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294 | Dim textLengthA = WideCharToMultiByte(CP_THREAD_ACP, 0, text, textLengthW, 0, 0, 0, 0)
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295 | If AllocStringBuffer(textLengthA) <> 0 Then
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296 | WideCharToMultiByte(CP_THREAD_ACP, 0, text, textLengthW, Chars, textLengthA, 0, 0)
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297 | Chars[textLengthA] = 0
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298 | End If
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299 | #else
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300 | AssignFromStrChar(text, textLengthW)
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301 | #endif
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302 | End Sub
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303 |
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304 | Private
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305 | Static Function ConcatStrChar(text1 As *StrChar, text1Length As Long, text2 As *StrChar, text2Length As Long) As String
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306 | ConcatStrChar = New String()
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307 | With ConcatStrChar
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308 | .AllocStringBuffer(text1Length + text2Length)
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309 | ActiveBasic.Strings.ChrCopy(.Chars, text1, text1Length As SIZE_T)
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310 | ActiveBasic.Strings.ChrCopy(VarPtr(.Chars[text1Length]), text2, text2Length As SIZE_T)
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311 | .Chars[text1Length + text2Length] = 0
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312 | End With
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313 | End Function
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314 | Public
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315 | Const Function Concat(text As PCSTR, len As Long) As String
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316 | #ifdef __STRING_IS_NOT_UNICODE
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317 | Return ConcatStrChar(This.Chars, m_Length, text, len)
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318 | #else
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319 | With Concat
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320 | Dim lenW = MultiByteToWideChar(CP_THREAD_ACP, 0, text, len, 0, 0)
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321 | Concat = New String
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322 | .AllocStringBuffer(m_Length + lenW)
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323 | ActiveBasic.Strings.ChrCopy(.Chars, This.Chars, m_Length As SIZE_T)
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324 | MultiByteToWideChar(CP_THREAD_ACP, 0, text, len, VarPtr(.Chars[m_Length]), lenW)
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325 | .Chars[m_Length + lenW] = 0
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326 | End With
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327 | #endif
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328 | End Function
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329 |
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330 | Const Function Concat(text As PCWSTR, len As Long) As String
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331 | #ifdef __STRING_IS_NOT_UNICODE
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332 | With Concat
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333 | Concat = New String
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334 | Dim lenA = WideCharToMultiByte(CP_THREAD_ACP, 0, text, len, 0, 0, 0, 0)
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335 | .AllocStringBuffer(m_Length + lenA)
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336 | ActiveBasic.Strings.ChrCopy(.Chars, This.Chars, m_Length As SIZE_T)
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337 | WideCharToMultiByte(CP_THREAD_ACP, 0, text, len, VarPtr(.Chars[m_Length]), lenA, 0, 0)
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338 | .Chars[m_Length + lenA] = 0
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339 | End With
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340 | #else
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341 | Return ConcatStrChar(This.Chars, m_Length, text, len)
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342 | #endif
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343 | End Function
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344 |
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345 | Static Function Concat(x As String, y As String) As String
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346 | If String.IsNullOrEmpty(x) Then
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347 | Return y
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348 | Else
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349 | Return x.Concat(y.Chars, y.m_Length)
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350 | End If
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351 | End Function
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352 |
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353 | Static Function Concat(x As Object, y As Object) As String
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354 | Return String.Concat(x.ToString, y.ToString)
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355 | End Function
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356 |
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357 | Const Function Contains(c As StrChar) As Boolean
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358 | Return IndexOf(c) >= 0
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359 | End Function
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360 |
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361 | Const Function Contains(s As String) As Boolean
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362 | If Object.ReferenceEquals(s, Nothing) Then
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363 | Throw New ArgumentNullException("String.Contains: An argument is null value.", "s")
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364 | ElseIf s = "" Then
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365 | Return True
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366 | Else
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367 | Return IndexOf(s, 0, m_Length) >= 0
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368 | End If
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369 | End Function
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370 |
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371 | Const Function IndexOf(c As StrChar) As Long
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372 | Return indexOfCore(c, 0, m_Length)
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373 | End Function
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374 |
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375 | Const Function IndexOf(c As StrChar, start As Long) As Long
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376 | rangeCheck(start)
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377 | Return indexOfCore(c, start, m_Length - start)
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378 | End Function
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379 |
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380 | Const Function IndexOf(c As StrChar, start As Long, count As Long) As Long
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381 | rangeCheck(start, count)
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382 | Return indexOfCore(c, start, count)
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383 | End Function
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384 | Private
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385 | Const Function indexOfCore(c As StrChar, start As Long, count As Long) As Long
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386 | indexOfCore = ActiveBasic.Strings.ChrFind(VarPtr(Chars[start]), count, c) As Long
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387 | If indexOfCore <> -1 Then
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388 | indexOfCore += start
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389 | End If
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390 | End Function
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391 | Public
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392 | Const Function IndexOf(s As String) As Long
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393 | Return IndexOf(s, 0, m_Length)
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394 | End Function
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395 |
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396 | Const Function IndexOf(s As String, startIndex As Long) As Long
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397 | Return IndexOf(s, startIndex, m_Length - startIndex)
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398 | End Function
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399 |
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400 | Const Function IndexOf(s As String, startIndex As Long, count As Long) As Long
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401 | rangeCheck(startIndex, count)
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402 | If Object.ReferenceEquals(s, Nothing) Then
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403 | Throw New ArgumentNullException("String.IndexOf: An argument is out of range value.", "s")
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404 | End If
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405 |
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406 | Dim length = s.Length
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407 | If length = 0 Then Return startIndex
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408 |
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409 | Dim i As Long, j As Long
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410 | For i = startIndex To startIndex + count - 1
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411 | For j = 0 To length - 1
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412 | If Chars[i + j] = s[j] Then
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413 | If j = length - 1 Then Return i
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414 | Else
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415 | Exit For
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416 | End If
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417 | Next
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418 | Next
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419 | Return -1
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420 | End Function
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421 |
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422 | Const Function LastIndexOf(c As StrChar) As Long
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423 | Return lastIndexOf(c, m_Length - 1, m_Length)
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424 | End Function
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425 |
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426 | Const Function LastIndexOf(c As StrChar, start As Long) As Long
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427 | rangeCheck(start)
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428 | Return lastIndexOf(c, start, start + 1)
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429 | End Function
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430 |
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431 | Const Function LastIndexOf(c As StrChar, start As Long, count As Long) As Long
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432 | rangeCheck(start)
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433 | Dim lastFindPos = start - (count - 1)
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434 | If Not (m_Length > lastFindPos And lastFindPos >= 0) Then
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435 | Throw New ArgumentOutOfRangeException("String.LastIndexOf: An argument is out of range value.", "count")
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436 | End If
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437 | Return lastIndexOf(c, start, count)
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438 | End Function
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439 | Private
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440 | Const Function lastIndexOf(c As StrChar, start As Long, count As Long) As Long
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441 | Dim lastFindPos = start - (count - 1)
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442 | Dim i As Long
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443 | For i = start To lastFindPos Step -1
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444 | If Chars[i] = c Then
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445 | Return i
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446 | End If
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447 | Next
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448 | Return -1
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449 | End Function
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450 |
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451 | Public
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452 | Const Function LastIndexOf(s As String) As Long
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453 | Return LastIndexOf(s, m_Length - 1, m_Length)
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454 | End Function
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455 |
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456 | Const Function LastIndexOf(s As String, startIndex As Long) As Long
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457 | Return LastIndexOf(s, startIndex, startIndex + 1)
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458 | End Function
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459 |
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460 | Const Function LastIndexOf(s As String, start As Long, count As Long) As Long
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461 | If Object.ReferenceEquals(s, Nothing) Then
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462 | Throw New ArgumentNullException("String.LastIndexOf: An argument is out of range value.", "s")
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463 | End If
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464 |
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465 | If start < 0 Or start > m_Length - 1 Or _
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466 | count < 0 Or count > start + 2 Then
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467 | Throw New ArgumentOutOfRangeException("String.LastIndexOf: One or more arguments are out of range value.", "start or count or both")
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468 | End If
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469 | Dim length = s.m_Length
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470 | If length > m_Length Then Return -1
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471 | If length = 0 Then Return start
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472 |
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473 | Dim i As Long, j As Long
|
---|
474 | For i = start To start - count + 1 Step -1
|
---|
475 | For j = length - 1 To 0 Step -1
|
---|
476 | If Chars[i + j] = s[j] Then
|
---|
477 | If j = 0 Then Return i
|
---|
478 | Else
|
---|
479 | Exit For
|
---|
480 | End If
|
---|
481 | Next
|
---|
482 | Next
|
---|
483 | Return -1
|
---|
484 | End Function
|
---|
485 |
|
---|
486 | Const Function StartsWith(c As StrChar) As Boolean
|
---|
487 | Return IndexOf(c) = 0
|
---|
488 | End Function
|
---|
489 |
|
---|
490 | Const Function StartsWith(s As String) As Boolean
|
---|
491 | Return IndexOf(s) = 0
|
---|
492 | End Function
|
---|
493 |
|
---|
494 | Const Function EndsWith(c As StrChar) As Boolean
|
---|
495 | Return LastIndexOf(c) = m_Length - 1
|
---|
496 | End Function
|
---|
497 |
|
---|
498 | Const Function EndsWith(s As String) As Boolean
|
---|
499 | Return LastIndexOf(s) = m_Length - s.Length
|
---|
500 | End Function
|
---|
501 |
|
---|
502 | Const Function Insert(startIndex As Long, text As String) As String
|
---|
503 | Dim sb = New Text.StringBuilder(This)
|
---|
504 | sb.Insert(startIndex, text)
|
---|
505 | Return sb.ToString
|
---|
506 | End Function
|
---|
507 |
|
---|
508 | Const Function Substring(startIndex As Long) As String
|
---|
509 | rangeCheck(startIndex)
|
---|
510 | Return Substring(startIndex, m_Length - startIndex)
|
---|
511 | End Function
|
---|
512 |
|
---|
513 | Const Function Substring(startIndex As Long, length As Long) As String
|
---|
514 | rangeCheck(startIndex, length)
|
---|
515 | Return New String(Chars, startIndex, length)
|
---|
516 | End Function
|
---|
517 |
|
---|
518 | Const Function Remove(startIndex As Long) As String
|
---|
519 | rangeCheck(startIndex)
|
---|
520 | Remove = Substring(0, startIndex)
|
---|
521 | End Function
|
---|
522 |
|
---|
523 | Const Function Remove(startIndex As Long, count As Long) As String
|
---|
524 | Dim sb = New Text.StringBuilder(This)
|
---|
525 | sb.Remove(startIndex, count)
|
---|
526 | Remove = sb.ToString
|
---|
527 | End Function
|
---|
528 |
|
---|
529 | Static Function IsNullOrEmpty(s As String) As Boolean
|
---|
530 | If Not Object.ReferenceEquals(s, Nothing) Then
|
---|
531 | If s.m_Length > 0 Then
|
---|
532 | Return False
|
---|
533 | End If
|
---|
534 | End If
|
---|
535 | Return True
|
---|
536 | End Function
|
---|
537 |
|
---|
538 | Const Function Replace(oldChar As StrChar, newChar As StrChar) As String
|
---|
539 | Dim sb = New Text.StringBuilder(This)
|
---|
540 | sb.Replace(oldChar, newChar)
|
---|
541 | Replace = sb.ToString
|
---|
542 | End Function
|
---|
543 |
|
---|
544 | Const Function Replace(oldStr As String, newStr As String) As String
|
---|
545 | Dim sb = New Text.StringBuilder(This)
|
---|
546 | sb.Replace(oldStr, newStr)
|
---|
547 | Return sb.ToString
|
---|
548 | End Function
|
---|
549 |
|
---|
550 | Const Function ToLower() As String
|
---|
551 | Dim sb = New Text.StringBuilder(m_Length)
|
---|
552 | sb.Length = m_Length
|
---|
553 | Dim i As Long
|
---|
554 | For i = 0 To ELM(m_Length)
|
---|
555 | sb[i] = ActiveBasic.CType.ToLower(Chars[i])
|
---|
556 | Next
|
---|
557 | Return sb.ToString
|
---|
558 | End Function
|
---|
559 |
|
---|
560 | Const Function ToUpper() As String
|
---|
561 | Dim sb = New Text.StringBuilder(m_Length)
|
---|
562 | sb.Length = m_Length
|
---|
563 | Dim i As Long
|
---|
564 | For i = 0 To ELM(m_Length)
|
---|
565 | sb[i] = ActiveBasic.CType.ToUpper(Chars[i])
|
---|
566 | Next
|
---|
567 | Return sb.ToString
|
---|
568 | End Function
|
---|
569 |
|
---|
570 | Override Function ToString() As String
|
---|
571 | ToString = This
|
---|
572 | End Function
|
---|
573 |
|
---|
574 | Const Function Clone() As String
|
---|
575 | Clone = This
|
---|
576 | End Function
|
---|
577 |
|
---|
578 | Static Function Copy(s As String) As String
|
---|
579 | Copy = New String(s.Chars, s.m_Length)
|
---|
580 | End Function
|
---|
581 |
|
---|
582 | Sub CopyTo(sourceIndex As Long, destination As *StrChar, destinationIndex As Long, count As Long)
|
---|
583 | ActiveBasic.Strings.ChrCopy(VarPtr(destination[destinationIndex]), VarPtr(Chars[sourceIndex]), count As SIZE_T)
|
---|
584 | End Sub
|
---|
585 |
|
---|
586 | Override Function GetHashCode() As Long
|
---|
587 | #ifdef __STRING_IS_NOT_UNICODE
|
---|
588 | Dim size = (m_Length + 1) >> 1
|
---|
589 | #else
|
---|
590 | Dim size = m_Length
|
---|
591 | #endif
|
---|
592 | Return _System_GetHashFromWordArray(Chars As *Word, size) Xor m_Length
|
---|
593 | End Function
|
---|
594 |
|
---|
595 | Function PadLeft(total As Long) As String
|
---|
596 | PadLeft(total, &h30 As StrChar)
|
---|
597 | End Function
|
---|
598 |
|
---|
599 | Function PadLeft(total As Long, c As StrChar) As String
|
---|
600 | If total < 0 Then
|
---|
601 | Throw New ArgumentOutOfRangeException("String.PadLeft: An arguments is out of range value.", "total")
|
---|
602 | End If
|
---|
603 | If total >= m_Length Then
|
---|
604 | Return This
|
---|
605 | End If
|
---|
606 | Dim sb = New Text.StringBuilder(total)
|
---|
607 | sb.Append(c, total - m_Length)
|
---|
608 | sb.Append(This)
|
---|
609 | Return sb.ToString
|
---|
610 | End Function
|
---|
611 |
|
---|
612 | Function PadRight(total As Long) As String
|
---|
613 | PadRight(total, &h30 As StrChar)
|
---|
614 | End Function
|
---|
615 |
|
---|
616 | Function PadRight(total As Long, c As StrChar) As String
|
---|
617 | If total < 0 Then
|
---|
618 | Throw New ArgumentOutOfRangeException("String.PadRight: An arguments is out of range value.", "total")
|
---|
619 | End If
|
---|
620 | If total >= m_Length Then
|
---|
621 | Return This
|
---|
622 | End If
|
---|
623 | Dim sb = New Text.StringBuilder(total)
|
---|
624 | sb.Append(This)
|
---|
625 | sb.Append(c, total - m_Length)
|
---|
626 | Return sb.ToString
|
---|
627 | End Function
|
---|
628 | Private
|
---|
629 | Function AllocStringBuffer(textLength As Long) As *StrChar
|
---|
630 | If textLength < 0 Then
|
---|
631 | Return 0
|
---|
632 | End If
|
---|
633 | AllocStringBuffer = GC_malloc_atomic(SizeOf(StrChar) * (textLength + 1))
|
---|
634 | If AllocStringBuffer = 0 Then
|
---|
635 | 'Throw New OutOfMemoryException
|
---|
636 | End If
|
---|
637 | m_Length = textLength
|
---|
638 | Chars = AllocStringBuffer
|
---|
639 | End Function
|
---|
640 |
|
---|
641 | Sub AssignFromStrChar(text As *StrChar, textLength As Long)
|
---|
642 | AllocStringBuffer(textLength)
|
---|
643 | ActiveBasic.Strings.ChrCopy(Chars, text, textLength As SIZE_T)
|
---|
644 | Chars[m_Length] = 0
|
---|
645 | End Sub
|
---|
646 |
|
---|
647 | Const Sub rangeCheck(index As Long)
|
---|
648 | If index < 0 Or index > m_Length Then
|
---|
649 | Throw New ArgumentOutOfRangeException("String: An arguments is out of range value.", "index")
|
---|
650 | End If
|
---|
651 | End Sub
|
---|
652 |
|
---|
653 | Const Sub rangeCheck(start As Long, length As Long)
|
---|
654 | If start < 0 Or start > This.m_Length Or length < 0 Then
|
---|
655 | Throw New ArgumentOutOfRangeException("String: One or more arguments are out of range value.", "start or length or both")
|
---|
656 | End If
|
---|
657 | End Sub
|
---|
658 | End Class
|
---|
659 |
|
---|
660 | End Namespace
|
---|