wasCSharpSQLite – Blame information for rev 4
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1 | office | 1 | /* |
2 | * ForCmd.java |
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3 | * |
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4 | * Copyright (c) 1997 Cornell University. |
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5 | * Copyright (c) 1997 Sun Microsystems, Inc. |
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6 | * |
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7 | * See the file "license.terms" for information on usage and |
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8 | * redistribution of this file, and for a DISCLAIMER OF ALL |
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9 | * WARRANTIES. |
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10 | * |
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11 | * Included in SQLite3 port to C# for use in testharness only; 2008 Noah B Hart |
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12 | * |
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13 | * RCS @(#) $Id: ForCmd.java,v 1.1.1.1 1998/10/14 21:09:19 cvsadmin Exp $ |
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14 | * |
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15 | */ |
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16 | using System; |
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17 | namespace tcl.lang |
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18 | { |
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19 | |||
20 | /// <summary> This class implements the built-in "for" command in Tcl.</summary> |
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21 | |||
22 | class ForCmd : Command |
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23 | { |
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24 | /* |
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25 | * This procedure is invoked to process the "for" Tcl command. |
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26 | * See the user documentation for details on what it does. |
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27 | * |
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28 | * @param interp the current interpreter. |
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29 | * @param argv command arguments. |
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30 | * @exception TclException if script causes error. |
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31 | */ |
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32 | |||
33 | public TCL.CompletionCode cmdProc( Interp interp, TclObject[] argv ) |
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34 | { |
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35 | if ( argv.Length != 5 ) |
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36 | { |
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37 | throw new TclNumArgsException( interp, 1, argv, "start test next command" ); |
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38 | } |
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39 | |||
40 | TclObject start = argv[1]; |
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41 | |||
42 | string test = argv[2].ToString(); |
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43 | TclObject next = argv[3]; |
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44 | TclObject command = argv[4]; |
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45 | |||
46 | bool done = false; |
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47 | try |
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48 | { |
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49 | interp.eval( start, 0 ); |
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50 | } |
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51 | catch ( TclException e ) |
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52 | { |
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53 | interp.addErrorInfo( "\n (\"for\" initial command)" ); |
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54 | throw; |
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55 | } |
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56 | |||
57 | while ( !done ) |
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58 | { |
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59 | if ( !interp.expr.evalBoolean( interp, test ) ) |
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60 | { |
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61 | break; |
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62 | } |
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63 | |||
64 | try |
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65 | { |
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66 | interp.eval( command, 0 ); |
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67 | } |
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68 | catch ( TclException e ) |
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69 | { |
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70 | switch ( e.getCompletionCode() ) |
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71 | { |
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72 | |||
73 | case TCL.CompletionCode.BREAK: |
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74 | done = true; |
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75 | break; |
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76 | |||
77 | |||
78 | case TCL.CompletionCode.CONTINUE: |
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79 | break; |
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80 | |||
81 | |||
82 | case TCL.CompletionCode.ERROR: |
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83 | interp.addErrorInfo( "\n (\"for\" body line " + interp.errorLine + ")" ); |
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84 | throw; |
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85 | |||
86 | |||
87 | default: |
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88 | throw; |
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89 | |||
90 | } |
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91 | } |
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92 | |||
93 | if ( !done ) |
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94 | { |
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95 | try |
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96 | { |
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97 | interp.eval( next, 0 ); |
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98 | } |
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99 | catch ( TclException e ) |
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100 | { |
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101 | switch ( e.getCompletionCode() ) |
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102 | { |
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103 | |||
104 | case TCL.CompletionCode.BREAK: |
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105 | done = true; |
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106 | break; |
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107 | |||
108 | |||
109 | case TCL.CompletionCode.CONTINUE: |
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110 | break; |
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111 | |||
112 | |||
113 | default: |
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114 | interp.addErrorInfo( "\n (\"for\" loop-end command)" ); |
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115 | throw; |
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116 | |||
117 | } |
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118 | } |
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119 | } |
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120 | } |
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121 | |||
122 | interp.resetResult(); |
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123 | return TCL.CompletionCode.RETURN; |
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124 | } |
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125 | } |
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126 | } |