[457] | 1 | /*
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| 2 | * Created by SharpDevelop.
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| 3 | * User: lextm
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| 4 | * Date: 2008/5/18
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| 5 | * Time: 13:24
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| 6 | *
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| 7 | * To change this template use Tools | Options | Coding | Edit Standard Headers.
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| 8 | */
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| 9 | using System;
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| 10 | using System.Collections.Generic;
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| 11 |
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| 12 | namespace Lextm.SharpSnmpLib.Mib.Elements.Types
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| 13 | {
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| 14 | /* Please be aware of the following possible constructs:
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| 15 | *
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| 16 | * isnsRegEntityIndex OBJECT-TYPE
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| 17 | * SYNTAX IsnsEntityIndexIdOrZero
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| 18 | * ( 1 .. 4294967295 )
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| 19 | * MAX-ACCESS not-accessible
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| 20 | *
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| 21 | *
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| 22 | */
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| 23 |
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| 24 | /// <summary/>
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| 25 | /// </summary>
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| 26 | public sealed class TypeAssignment : ITypeAssignment
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| 27 | {
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| 28 | private IModule _module;
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| 29 | private string _name;
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| 30 | private string _type;
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| 31 | private ValueRanges _ranges;
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| 32 | private ValueMap _map;
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| 33 |
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| 34 | /// <summary>
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| 35 | /// Creates an <see cref="TypeAssignment" />.
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| 36 | /// </summary>
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| 37 | /// <param name="module">The module.</param>
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| 38 | /// <param name="name">The name.</param>
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| 39 | /// <param name="type">The type.</param>
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| 40 | /// <param name="symbols">The symbols.</param>
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| 41 | /// <param name="isMacroSyntax">if set to <c>true</c> indicates that the syntax clause of a macro is parsed (e.g. OBJECT-TYPE, TEXTUAL-CONVENTION).</param>
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| 42 | public TypeAssignment(IModule module, string name, Symbol type, ISymbolEnumerator symbols, bool isMacroSyntax)
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| 43 | {
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| 44 | _module = module;
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| 45 | _name = name;
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| 46 |
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| 47 | SymbolList typeSymbols = new SymbolList();
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| 48 | typeSymbols.Add(type);
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| 49 |
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| 50 | Symbol current = symbols.NextSymbol();
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| 51 | while (current != Symbol.EOL)
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| 52 | {
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| 53 | if (current == Symbol.OpenParentheses)
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| 54 | {
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| 55 | // parse range of unknown type
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| 56 | symbols.PutBack(current);
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| 57 | _ranges = Lexer.DecodeRanges(symbols);
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| 58 | break;
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| 59 | }
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| 60 | else if (current == Symbol.OpenBracket)
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| 61 | {
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| 62 | symbols.PutBack(current);
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| 63 | _map = Lexer.DecodeEnumerations(symbols);
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| 64 | break;
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| 65 | }
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| 66 |
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| 67 | typeSymbols.Add(current);
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| 68 | current = symbols.NextSymbol();
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| 69 | }
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| 70 |
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| 71 | _type = typeSymbols.Join(" ");
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| 72 |
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| 73 | if ((_ranges == null) && (_map == null))
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| 74 | {
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| 75 | current = symbols.NextNonEOLSymbol();
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| 76 | if (current == Symbol.OpenParentheses)
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| 77 | {
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| 78 | // parse range of unknown type
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| 79 | symbols.PutBack(current);
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| 80 | _ranges = Lexer.DecodeRanges(symbols);
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| 81 | }
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| 82 | else if (current == Symbol.OpenBracket)
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| 83 | {
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| 84 | symbols.PutBack(current);
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| 85 | _map = Lexer.DecodeEnumerations(symbols);
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| 86 | }
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| 87 | else if (current != null)
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| 88 | {
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| 89 | symbols.PutBack(current);
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| 90 | }
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| 91 | }
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| 92 |
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| 93 | if (isMacroSyntax)
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| 94 | {
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| 95 | // inside a macro the syntax is limited to one line, except there are brackets used for ranges/enums
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| 96 | return;
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| 97 | }
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| 98 |
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| 99 | // outside macro Syntax clause we wait for two consecutive linebreaks with a following valid identifier as end condition
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| 100 | Symbol previous = current;
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| 101 | Symbol veryPrevious = null;
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| 102 |
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| 103 | while ((current = symbols.NextSymbol()) != null)
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| 104 | {
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| 105 | if ((veryPrevious == Symbol.EOL) && (previous == Symbol.EOL) && current.IsValidIdentifier())
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| 106 | {
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| 107 | symbols.PutBack(current);
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| 108 | return;
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| 109 | }
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| 110 |
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| 111 | veryPrevious = previous;
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| 112 | previous = current;
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| 113 | }
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| 114 |
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| 115 | previous.Assert(false, "end of file reached");
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| 116 | }
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| 117 |
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| 118 | public string Type
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| 119 | {
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| 120 | get { return _type; }
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| 121 | }
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| 122 |
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| 123 | public ValueRanges Ranges
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| 124 | {
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| 125 | get { return _ranges; }
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| 126 | }
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| 127 |
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| 128 | public IDictionary<long, string> Map
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| 129 | {
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| 130 | get { return _map; }
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| 131 | }
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| 132 |
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| 133 | #region ITypeAssignment Member
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| 134 |
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| 135 | public IModule Module
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| 136 | {
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| 137 | get { return _module; }
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| 138 | }
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| 139 |
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| 140 | public string Name
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| 141 | {
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| 142 | get { return _name; }
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| 143 | }
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| 144 |
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| 145 | #endregion
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| 146 | }
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| 147 | }
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