wasCSharpSQLite – Blame information for rev 1
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1 | office | 1 | /* |
2 | * TclIndex.java |
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3 | * |
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4 | * This file implements objects of type "index". This object type |
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5 | * is used to lookup a keyword in a table of valid values and cache |
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6 | * the index of the matching entry. |
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7 | * |
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8 | * Copyright (c) 1997 Sun Microsystems, Inc. |
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9 | * |
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10 | * See the file "license.terms" for information on usage and |
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11 | * redistribution of this file, and for a DISCLAIMER OF ALL |
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12 | * WARRANTIES. |
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13 | * |
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14 | * Included in SQLite3 port to C# for use in testharness only; 2008 Noah B Hart |
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15 | * |
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16 | * RCS @(#) $Id: TclIndex.java,v 1.5 2003/01/10 01:35:58 mdejong Exp $ |
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17 | */ |
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18 | using System.Text; |
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19 | namespace tcl.lang |
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20 | { |
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21 | |||
22 | public class TclIndex : InternalRep |
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23 | { |
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24 | |||
25 | /// <summary> The variable slots for this object.</summary> |
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26 | private int index; |
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27 | |||
28 | /// <summary> Table of valid options.</summary> |
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29 | |||
30 | private string[] table; |
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31 | |||
32 | /// <summary> Construct a TclIndex representation with the given index & table.</summary> |
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33 | private TclIndex( int i, string[] tab ) |
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34 | { |
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35 | index = i; |
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36 | table = tab; |
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37 | } |
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38 | |||
39 | /// <summary> Returns a dupilcate of the current object.</summary> |
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40 | /// <param name="obj">the TclObject that contains this internalRep. |
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41 | /// </param> |
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42 | public InternalRep duplicate() |
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43 | { |
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44 | return new TclIndex( index, table ); |
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45 | } |
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46 | |||
47 | /// <summary> Implement this no-op for the InternalRep interface.</summary> |
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48 | |||
49 | public void dispose() |
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50 | { |
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51 | } |
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52 | |||
53 | /// <summary> Called to query the string representation of the Tcl object. This |
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54 | /// method is called only by TclObject.toString() when |
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55 | /// TclObject.stringRep is null. |
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56 | /// |
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57 | /// </summary> |
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58 | /// <returns> the string representation of the Tcl object. |
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59 | /// </returns> |
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60 | public override string ToString() |
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61 | { |
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62 | return table[index]; |
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63 | } |
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64 | |||
65 | /// <summary> Tcl_GetIndexFromObj -> get |
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66 | /// |
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67 | /// Gets the index into the table of the object. Generate an error |
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68 | /// it it doesn't occur. This also converts the object to an index |
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69 | /// which should catch the lookup for speed improvement. |
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70 | /// |
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71 | /// </summary> |
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72 | /// <param name="interp">the interperter or null |
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73 | /// </param> |
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74 | /// <param name="tobj">the object to operate on. |
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75 | /// @paran table the list of commands |
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76 | /// @paran msg used as part of any error messages |
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77 | /// @paran flags may be TCL.EXACT. |
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78 | /// </param> |
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79 | |||
80 | public static int get( Interp interp, TclObject tobj, string[] table, string msg, int flags ) |
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81 | { |
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82 | InternalRep rep = tobj.InternalRep; |
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83 | |||
84 | if ( rep is TclIndex ) |
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85 | { |
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86 | if ( ( (TclIndex)rep ).table == table ) |
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87 | { |
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88 | return ( (TclIndex)rep ).index; |
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89 | } |
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90 | } |
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91 | |||
92 | string str = tobj.ToString(); |
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93 | int strLen = str.Length; |
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94 | int tableLen = table.Length; |
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95 | int index = -1; |
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96 | int numAbbrev = 0; |
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97 | |||
98 | { |
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99 | if ( strLen > 0 ) |
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100 | { |
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101 | |||
102 | for ( int i = 0; i < tableLen; i++ ) |
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103 | { |
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104 | string option = table[i]; |
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105 | |||
106 | if ( ( ( flags & TCL.EXACT ) == TCL.EXACT ) && ( option.Length != strLen ) ) |
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107 | { |
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108 | continue; |
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109 | } |
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110 | if ( option.Equals( str ) ) |
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111 | { |
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112 | // Found an exact match already. Return it. |
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113 | |||
114 | index = i; |
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115 | goto checking_brk; |
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116 | } |
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117 | if ( option.StartsWith( str ) ) |
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118 | { |
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119 | numAbbrev++; |
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120 | index = i; |
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121 | } |
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122 | } |
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123 | } |
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124 | if ( numAbbrev != 1 ) |
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125 | { |
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126 | StringBuilder sbuf = new StringBuilder(); |
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127 | if ( numAbbrev > 1 ) |
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128 | { |
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129 | sbuf.Append( "ambiguous " ); |
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130 | } |
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131 | else |
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132 | { |
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133 | sbuf.Append( "bad " ); |
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134 | } |
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135 | sbuf.Append( msg ); |
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136 | sbuf.Append( " \"" ); |
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137 | sbuf.Append( str ); |
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138 | sbuf.Append( "\"" ); |
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139 | sbuf.Append( ": must be " ); |
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140 | sbuf.Append( table[0] ); |
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141 | for ( int i = 1; i < tableLen; i++ ) |
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142 | { |
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143 | if ( i == ( tableLen - 1 ) ) |
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144 | { |
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145 | sbuf.Append( ( i > 1 ) ? ", or " : " or " ); |
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146 | } |
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147 | else |
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148 | { |
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149 | sbuf.Append( ", " ); |
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150 | } |
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151 | sbuf.Append( table[i] ); |
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152 | } |
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153 | throw new TclException( interp, sbuf.ToString() ); |
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154 | } |
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155 | } |
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156 | checking_brk: |
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157 | ; |
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158 | // Create a new index object. |
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159 | tobj.InternalRep = new TclIndex( index, table ); |
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160 | return index; |
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161 | } |
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162 | } |
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163 | } |