[14] | 1 | /**CFile*********************************************************************** |
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| 2 | |
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| 3 | FileName [absCatalog.c] |
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| 4 | |
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| 5 | PackageName [abs] |
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| 6 | |
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| 7 | Synopsis [Functions to handle a catalog of sub-formulas to detect |
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| 8 | common sub-expressions] |
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| 9 | |
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| 10 | Author [Abelardo Pardo <abel@vlsi.colorado.edu>] |
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| 11 | |
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| 12 | Copyright [This file was created at the University of Colorado at |
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| 13 | Boulder. The University of Colorado at Boulder makes no warranty |
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| 14 | about the suitability of this software for any purpose. It is |
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| 15 | presented on an AS IS basis.] |
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| 16 | |
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| 17 | ******************************************************************************/ |
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| 18 | |
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| 19 | #include "absInt.h" |
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| 20 | |
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| 21 | static char rcsid[] UNUSED = "$Id: absCatalog.c,v 1.8 2005/04/16 04:22:21 fabio Exp $"; |
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| 22 | |
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| 23 | |
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| 24 | /*---------------------------------------------------------------------------*/ |
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| 25 | /* Structure declarations */ |
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| 26 | /*---------------------------------------------------------------------------*/ |
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| 27 | |
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| 28 | /**Struct********************************************************************** |
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| 29 | |
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| 30 | Synopsis [A struct to keep list of subformulas to detect common |
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| 31 | subexpressions] |
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| 32 | |
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| 33 | SeeAlso [AbsVerificationInfo] |
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| 34 | |
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| 35 | ******************************************************************************/ |
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| 36 | |
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| 37 | struct AbsVertexCatalog { |
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| 38 | lsList fixedPoints; |
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| 39 | lsList booleanOps; |
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| 40 | lsList negations; |
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| 41 | lsList preImages; |
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| 42 | lsList identifiers; |
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| 43 | lsList variables; |
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| 44 | }; |
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| 45 | |
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| 46 | /*---------------------------------------------------------------------------*/ |
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| 47 | /* Macro declarations */ |
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| 48 | /*---------------------------------------------------------------------------*/ |
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| 49 | |
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| 50 | /**Macro*********************************************************************** |
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| 51 | |
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| 52 | Synopsis [Macro to read the fixedPoints field from a AbsVertexCatalog_t |
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| 53 | structure] |
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| 54 | |
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| 55 | SideEffects [] |
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| 56 | |
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| 57 | SeeAlso [AbsVertexCatalog] |
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| 58 | |
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| 59 | ******************************************************************************/ |
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| 60 | #define AbsVertexCatalogReadFixedPoints(\ |
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| 61 | /* AbsVertexCatalog_t * */ cPtr \ |
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| 62 | ) \ |
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| 63 | (cPtr->fixedPoints) |
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| 64 | |
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| 65 | /**Macro*********************************************************************** |
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| 66 | |
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| 67 | Synopsis [Macro to read the booleanOps field from a AbsVertexCatalog_t |
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| 68 | structure] |
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| 69 | |
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| 70 | SideEffects [] |
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| 71 | |
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| 72 | SeeAlso [AbsVertexCatalog] |
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| 73 | |
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| 74 | ******************************************************************************/ |
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| 75 | #define AbsVertexCatalogReadBooleanOps(\ |
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| 76 | /* AbsVertexCatalog_t * */ cPtr \ |
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| 77 | ) \ |
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| 78 | (cPtr->booleanOps) |
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| 79 | |
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| 80 | /**Macro*********************************************************************** |
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| 81 | |
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| 82 | Synopsis [Macro to read the negations field from a AbsVertexCatalog_t |
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| 83 | structure] |
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| 84 | |
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| 85 | SideEffects [] |
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| 86 | |
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| 87 | SeeAlso [AbsVertexCatalog] |
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| 88 | |
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| 89 | ******************************************************************************/ |
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| 90 | #define AbsVertexCatalogReadNegations(\ |
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| 91 | /* AbsVertexCatalog_t * */ cPtr \ |
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| 92 | ) \ |
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| 93 | (cPtr->negations) |
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| 94 | |
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| 95 | /**Macro*********************************************************************** |
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| 96 | |
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| 97 | Synopsis [Macro to read the preImages field from a AbsVertexCatalog_t |
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| 98 | structure] |
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| 99 | |
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| 100 | SideEffects [] |
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| 101 | |
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| 102 | SeeAlso [AbsVertexCatalog] |
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| 103 | |
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| 104 | ******************************************************************************/ |
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| 105 | #define AbsVertexCatalogReadPreImages(\ |
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| 106 | /* AbsVertexCatalog_t * */ cPtr \ |
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| 107 | ) \ |
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| 108 | (cPtr->preImages) |
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| 109 | |
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| 110 | /**Macro*********************************************************************** |
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| 111 | |
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| 112 | Synopsis [Macro to read the identifiers field from a AbsVertexCatalog_t |
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| 113 | structure] |
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| 114 | |
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| 115 | SideEffects [] |
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| 116 | |
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| 117 | SeeAlso [AbsVertexCatalog] |
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| 118 | |
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| 119 | ******************************************************************************/ |
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| 120 | #define AbsVertexCatalogReadIdentifiers(\ |
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| 121 | /* AbsVertexCatalog_t * */ cPtr \ |
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| 122 | ) \ |
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| 123 | (cPtr->identifiers) |
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| 124 | |
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| 125 | /**Macro*********************************************************************** |
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| 126 | |
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| 127 | Synopsis [Macro to read the variables field from a AbsVertexCatalog_t |
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| 128 | structure] |
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| 129 | |
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| 130 | SideEffects [] |
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| 131 | |
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| 132 | SeeAlso [AbsVertexCatalog] |
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| 133 | |
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| 134 | ******************************************************************************/ |
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| 135 | #define AbsVertexCatalogReadVariables(\ |
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| 136 | /* AbsVertexCatalog_t * */ cPtr \ |
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| 137 | ) \ |
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| 138 | (cPtr->variables) |
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| 139 | |
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| 140 | /**Macro*********************************************************************** |
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| 141 | |
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| 142 | Synopsis [Macro to set the fixedPoints field from a AbsVertexCatalog_t |
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| 143 | structure] |
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| 144 | |
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| 145 | SideEffects [] |
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| 146 | |
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| 147 | SeeAlso [AbsVertexCatalog] |
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| 148 | |
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| 149 | ******************************************************************************/ |
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| 150 | #define AbsVertexCatalogSetFixedPoints(\ |
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| 151 | /* AbsVertexCatalog_t * */ cPtr, \ |
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| 152 | /* lsList */ data \ |
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| 153 | ) \ |
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| 154 | (cPtr->fixedPoints) = (data) |
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| 155 | |
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| 156 | /**Macro*********************************************************************** |
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| 157 | |
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| 158 | Synopsis [Macro to set the booleanOps field from a AbsVertexCatalog_t |
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| 159 | structure] |
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| 160 | |
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| 161 | SideEffects [] |
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| 162 | |
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| 163 | SeeAlso [AbsVertexCatalog] |
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| 164 | |
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| 165 | ******************************************************************************/ |
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| 166 | #define AbsVertexCatalogSetBooleanOps(\ |
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| 167 | /* AbsVertexCatalog_t * */ cPtr, \ |
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| 168 | /* lsList */ data \ |
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| 169 | ) \ |
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| 170 | (cPtr->booleanOps) = (data) |
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| 171 | |
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| 172 | /**Macro*********************************************************************** |
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| 173 | |
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| 174 | Synopsis [Macro to set the negations field from a AbsVertexCatalog_t |
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| 175 | structure] |
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| 176 | |
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| 177 | SideEffects [AbsVertexCatalog] |
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| 178 | |
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| 179 | SeeAlso [] |
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| 180 | |
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| 181 | ******************************************************************************/ |
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| 182 | #define AbsVertexCatalogSetNegations(\ |
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| 183 | /* AbsVertexCatalog_t * */ cPtr, \ |
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| 184 | /* lsList */ data \ |
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| 185 | ) \ |
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| 186 | (cPtr->negations) = (data) |
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| 187 | |
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| 188 | /**Macro*********************************************************************** |
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| 189 | |
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| 190 | Synopsis [Macro to set the preImages field from a AbsVertexCatalog_t |
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| 191 | structure] |
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| 192 | |
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| 193 | SideEffects [] |
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| 194 | |
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| 195 | SeeAlso [AbsVertexCatalog] |
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| 196 | |
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| 197 | ******************************************************************************/ |
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| 198 | #define AbsVertexCatalogSetPreImages(\ |
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| 199 | /* AbsVertexCatalog_t * */ cPtr, \ |
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| 200 | /* lsList */ data \ |
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| 201 | ) \ |
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| 202 | (cPtr->preImages) = (data) |
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| 203 | |
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| 204 | /**Macro*********************************************************************** |
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| 205 | |
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| 206 | Synopsis [Macro to set the identifiers field from a AbsVertexCatalog_t |
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| 207 | structure] |
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| 208 | |
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| 209 | SideEffects [] |
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| 210 | |
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| 211 | SeeAlso [AbsVertexCatalog] |
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| 212 | |
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| 213 | ******************************************************************************/ |
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| 214 | #define AbsVertexCatalogSetIdentifiers(\ |
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| 215 | /* AbsVertexCatalog_t * */ cPtr, \ |
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| 216 | /* lsList */ data \ |
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| 217 | ) \ |
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| 218 | (cPtr->identifiers) = (data) |
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| 219 | |
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| 220 | /**Macro*********************************************************************** |
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| 221 | |
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| 222 | Synopsis [Macro to set the variables field from a AbsVertexCatalog_t |
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| 223 | structure] |
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| 224 | |
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| 225 | SideEffects [] |
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| 226 | |
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| 227 | SeeAlso [AbsVertexCatalog] |
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| 228 | |
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| 229 | ******************************************************************************/ |
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| 230 | #define AbsVertexCatalogSetVariables(\ |
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| 231 | /* AbsVertexCatalog_t * */ cPtr, \ |
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| 232 | /* lsList */ data \ |
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| 233 | ) \ |
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| 234 | (cPtr->variables) = (data) |
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| 235 | |
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| 236 | /**AutomaticStart*************************************************************/ |
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| 237 | |
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| 238 | /*---------------------------------------------------------------------------*/ |
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| 239 | /* Static function prototypes */ |
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| 240 | /*---------------------------------------------------------------------------*/ |
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| 241 | |
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| 242 | static AbsVertexInfo_t * LookUpBooleanOp(lsList vertexList, AbsVertex_t type, boolean polarity, AbsVertexInfo_t *leftKid, AbsVertexInfo_t *rightKid); |
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| 243 | static AbsVertexInfo_t * LookUpFixedPoint(lsList vertexList, boolean polarity, AbsVertexInfo_t *leftKid, int localId); |
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| 244 | static AbsVertexInfo_t * LookUpIdentifier(lsList vertexList, boolean polarity, char *name, char *value); |
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| 245 | static AbsVertexInfo_t * LookUpPreImage(lsList vertexList, boolean polarity, AbsVertexInfo_t *leftKid); |
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| 246 | static AbsVertexInfo_t * LookUpVariable(lsList vertexList, boolean polarity, int localId); |
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| 247 | |
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| 248 | /**AutomaticEnd***************************************************************/ |
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| 249 | |
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| 250 | |
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| 251 | /*---------------------------------------------------------------------------*/ |
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| 252 | /* Definition of exported functions */ |
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| 253 | /*---------------------------------------------------------------------------*/ |
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| 254 | |
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| 255 | /*---------------------------------------------------------------------------*/ |
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| 256 | /* Definition of internal functions */ |
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| 257 | /*---------------------------------------------------------------------------*/ |
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| 258 | |
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| 259 | /**Function******************************************************************** |
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| 260 | |
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| 261 | Synopsis [Allocate the structure to store the catalog of vertices] |
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| 262 | |
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| 263 | SideEffects [] |
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| 264 | |
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| 265 | SeeAlso [AbsVertexCatalog] |
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| 266 | |
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| 267 | ******************************************************************************/ |
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| 268 | AbsVertexCatalog_t * |
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| 269 | AbsVertexCatalogInitialize(void) |
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| 270 | { |
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| 271 | AbsVertexCatalog_t *result; |
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| 272 | |
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| 273 | result = ALLOC(AbsVertexCatalog_t, 1); |
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| 274 | |
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| 275 | AbsVertexCatalogSetFixedPoints(result, lsCreate()); |
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| 276 | AbsVertexCatalogSetBooleanOps(result, lsCreate()); |
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| 277 | AbsVertexCatalogSetNegations(result, lsCreate()); |
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| 278 | AbsVertexCatalogSetPreImages(result, lsCreate()); |
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| 279 | AbsVertexCatalogSetIdentifiers(result, lsCreate()); |
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| 280 | AbsVertexCatalogSetVariables(result, lsCreate()); |
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| 281 | |
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| 282 | return result; |
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| 283 | } /* End of AbsVertexCatalogInitialize */ |
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| 284 | |
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| 285 | /**Function******************************************************************** |
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| 286 | |
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| 287 | Synopsis [Deallocate the structure storing the catalog vertices] |
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| 288 | |
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| 289 | SideEffects [] |
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| 290 | |
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| 291 | SeeAlso [AbsVertexCatalog] |
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| 292 | |
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| 293 | ******************************************************************************/ |
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| 294 | void |
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| 295 | AbsVertexCatalogFree( |
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| 296 | AbsVertexCatalog_t *c) |
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| 297 | { |
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| 298 | lsDestroy(AbsVertexCatalogReadFixedPoints(c), (void (*)(lsGeneric))0); |
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| 299 | lsDestroy(AbsVertexCatalogReadBooleanOps(c), (void (*)(lsGeneric))0); |
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| 300 | lsDestroy(AbsVertexCatalogReadNegations(c), (void (*)(lsGeneric))0); |
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| 301 | lsDestroy(AbsVertexCatalogReadPreImages(c), (void (*)(lsGeneric))0); |
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| 302 | lsDestroy(AbsVertexCatalogReadIdentifiers(c), (void (*)(lsGeneric))0); |
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| 303 | lsDestroy(AbsVertexCatalogReadVariables(c), (void (*)(lsGeneric))0); |
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| 304 | |
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| 305 | FREE(c); |
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| 306 | |
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| 307 | return; |
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| 308 | } /* End of AbsVertexCatalogFree */ |
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| 309 | |
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| 310 | /**Function******************************************************************** |
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| 311 | |
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| 312 | Synopsis [Find or create the vertex with the given sub-formula in the vertex |
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| 313 | catalog] |
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| 314 | |
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| 315 | SideEffects [] |
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| 316 | |
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| 317 | SeeAlso [AbsVertexCatalog] |
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| 318 | |
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| 319 | ******************************************************************************/ |
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| 320 | AbsVertexInfo_t * |
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| 321 | AbsVertexCatalogFindOrAdd( |
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| 322 | AbsVertexCatalog_t *catalog, |
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| 323 | AbsVertex_t type, |
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| 324 | boolean polarity, |
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| 325 | AbsVertexInfo_t *leftKid, |
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| 326 | AbsVertexInfo_t *rightKid, |
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| 327 | int localId, |
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| 328 | char *idName, |
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| 329 | char *idValue |
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| 330 | ) |
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| 331 | { |
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| 332 | if (type == fixedPoint_c) { |
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| 333 | return LookUpFixedPoint(AbsVertexCatalogReadFixedPoints(catalog), |
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| 334 | polarity, leftKid, localId); |
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| 335 | } |
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| 336 | |
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| 337 | if (type == and_c || type == xor_c || type == xnor_c) { |
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| 338 | return LookUpBooleanOp(AbsVertexCatalogReadBooleanOps(catalog), |
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| 339 | type, polarity, leftKid, rightKid); |
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| 340 | } |
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| 341 | |
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| 342 | if (type == not_c) { |
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| 343 | return LookUpPreImage(AbsVertexCatalogReadNegations(catalog), |
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| 344 | polarity, leftKid); |
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| 345 | } |
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| 346 | |
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| 347 | if (type == preImage_c) { |
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| 348 | return LookUpPreImage(AbsVertexCatalogReadPreImages(catalog), |
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| 349 | polarity, leftKid); |
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| 350 | } |
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| 351 | |
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| 352 | if (type == identifier_c) { |
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| 353 | return LookUpIdentifier(AbsVertexCatalogReadIdentifiers(catalog), |
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| 354 | polarity, idName, idValue); |
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| 355 | } |
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| 356 | |
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| 357 | if (type == variable_c) { |
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| 358 | return LookUpVariable(AbsVertexCatalogReadVariables(catalog), |
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| 359 | polarity, localId); |
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| 360 | } |
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| 361 | |
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| 362 | (void) fprintf(vis_stderr, "** abs error: Unknown vertex type in function "); |
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| 363 | (void) fprintf(vis_stderr, "AbsVertexCatalogFindOrAdd.\n"); |
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| 364 | |
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| 365 | return NIL(AbsVertexInfo_t); |
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| 366 | |
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| 367 | } /* End of AbsVertexCatalogFindOrAdd */ |
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| 368 | |
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| 369 | /**Function******************************************************************** |
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| 370 | |
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| 371 | Synopsis [Delete a vertex from the catalog] |
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| 372 | |
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| 373 | SideEffects [] |
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| 374 | |
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| 375 | SeeAlso [AbsVertexFree] |
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| 376 | |
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| 377 | ******************************************************************************/ |
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| 378 | void |
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| 379 | AbsCatalogDelete( |
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| 380 | AbsVertexCatalog_t *catalog, |
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| 381 | AbsVertexInfo_t *vertex) |
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| 382 | { |
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| 383 | AbsVertex_t type; |
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| 384 | AbsVertexInfo_t *result; |
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| 385 | lsList vertexList; |
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| 386 | lsGen listGen; |
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| 387 | lsHandle item; |
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| 388 | lsGeneric userData; |
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| 389 | |
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| 390 | vertexList = 0; |
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| 391 | type = AbsVertexReadType(vertex); |
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| 392 | |
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| 393 | /* Select the proper list from the catalog */ |
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| 394 | if (type == fixedPoint_c) { |
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| 395 | vertexList = AbsVertexCatalogReadFixedPoints(catalog); |
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| 396 | } |
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| 397 | |
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| 398 | if (type == and_c || type == xor_c || type == xnor_c) { |
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| 399 | vertexList = AbsVertexCatalogReadBooleanOps(catalog); |
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| 400 | } |
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| 401 | |
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| 402 | if (type == not_c) { |
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| 403 | vertexList = AbsVertexCatalogReadNegations(catalog); |
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| 404 | } |
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| 405 | |
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| 406 | if (type == preImage_c) { |
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| 407 | vertexList = AbsVertexCatalogReadPreImages(catalog); |
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| 408 | } |
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| 409 | |
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| 410 | if (type == identifier_c) { |
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| 411 | vertexList = AbsVertexCatalogReadIdentifiers(catalog); |
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| 412 | } |
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| 413 | |
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| 414 | if (type == variable_c) { |
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| 415 | vertexList = AbsVertexCatalogReadVariables(catalog); |
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| 416 | } |
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| 417 | |
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| 418 | listGen = lsStart(vertexList); |
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| 419 | while(lsNext(listGen, &result, &item) == LS_OK) { |
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| 420 | if (result == vertex) { |
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| 421 | lsRemoveItem(item, &userData); |
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| 422 | assert(vertex == (AbsVertexInfo_t *)userData); |
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| 423 | lsFinish(listGen); |
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| 424 | return; |
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| 425 | } |
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| 426 | } |
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| 427 | |
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| 428 | (void) fprintf(vis_stderr, "** abs error: Removing non-existent vertex from"); |
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| 429 | (void) fprintf(vis_stderr, " catalog\n"); |
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| 430 | |
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| 431 | return; |
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| 432 | } /* End of AbsCatalogDelete */ |
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| 433 | |
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| 434 | /*---------------------------------------------------------------------------*/ |
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| 435 | /* Definition of static functions */ |
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| 436 | /*---------------------------------------------------------------------------*/ |
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| 437 | |
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| 438 | /**Function******************************************************************** |
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| 439 | |
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| 440 | Synopsis [Find or add a vertex to the list of boolean ops] |
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| 441 | |
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| 442 | SideEffects [] |
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| 443 | |
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| 444 | SeeAlso [AbsVertexCatalogFindOrAdd] |
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| 445 | |
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| 446 | ******************************************************************************/ |
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| 447 | static AbsVertexInfo_t * |
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| 448 | LookUpBooleanOp( |
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| 449 | lsList vertexList, |
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| 450 | AbsVertex_t type, |
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| 451 | boolean polarity, |
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| 452 | AbsVertexInfo_t *leftKid, |
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| 453 | AbsVertexInfo_t *rightKid) |
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| 454 | { |
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| 455 | lsGen listGen; |
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| 456 | AbsVertexInfo_t *result; |
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| 457 | |
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| 458 | /* Start the generator and traverse the list */ |
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| 459 | listGen = lsStart(vertexList); |
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| 460 | while(lsNext(listGen, &result, NIL(lsHandle)) == LS_OK) { |
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| 461 | if (AbsVertexReadType(result) == type && |
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| 462 | AbsVertexReadLeftKid(result) == leftKid && |
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| 463 | AbsVertexReadRightKid(result) == rightKid && |
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| 464 | AbsVertexReadPolarity(result) == polarity) { |
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| 465 | AbsVertexReadRefs(result)++; |
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| 466 | lsFinish(listGen); |
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| 467 | return result; |
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| 468 | } |
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| 469 | } |
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| 470 | |
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| 471 | /* Item has not been found */ |
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| 472 | lsFinish(listGen); |
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| 473 | result = AbsVertexInitialize(); |
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| 474 | lsNewBegin(vertexList, (lsGeneric)result, NIL(lsHandle)); |
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| 475 | |
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| 476 | return result; |
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| 477 | } /* End of LookUpBooleanOp */ |
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| 478 | |
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| 479 | /**Function******************************************************************** |
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| 480 | |
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| 481 | Synopsis [Find or add a vertex to the list of fixedpoints] |
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| 482 | |
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| 483 | SideEffects [] |
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| 484 | |
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| 485 | SeeAlso [AbsVertexCatalogFindOrAdd] |
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| 486 | |
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| 487 | ******************************************************************************/ |
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| 488 | static AbsVertexInfo_t * |
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| 489 | LookUpFixedPoint( |
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| 490 | lsList vertexList, |
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| 491 | boolean polarity, |
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| 492 | AbsVertexInfo_t *leftKid, |
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| 493 | int localId) |
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| 494 | { |
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| 495 | lsGen listGen; |
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| 496 | AbsVertexInfo_t *result; |
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| 497 | |
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| 498 | /* Start the generator and traverse the list */ |
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| 499 | listGen = lsStart(vertexList); |
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| 500 | while(lsNext(listGen, &result, NIL(lsHandle)) == LS_OK) { |
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| 501 | if (AbsVertexReadLeftKid(result) == leftKid && |
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| 502 | AbsVertexReadPolarity(result) == polarity && |
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| 503 | AbsVertexReadVarId(AbsVertexReadFpVar(result)) == localId) { |
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| 504 | AbsVertexReadRefs(result)++; |
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| 505 | lsFinish(listGen); |
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| 506 | return result; |
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| 507 | } |
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| 508 | } |
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| 509 | |
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| 510 | /* Item has not been found */ |
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| 511 | lsFinish(listGen); |
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| 512 | result = AbsVertexInitialize(); |
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| 513 | lsNewBegin(vertexList, (lsGeneric)result, NIL(lsHandle)); |
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| 514 | |
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| 515 | return result; |
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| 516 | } /* End of LookUpFixedPoint */ |
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| 517 | |
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| 518 | /**Function******************************************************************** |
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| 519 | |
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| 520 | Synopsis [Find or add a vertex to the list of identifiers] |
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| 521 | |
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| 522 | SideEffects [] |
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| 523 | |
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| 524 | SeeAlso [AbsVertexCatalogFindOrAdd] |
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| 525 | |
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| 526 | ******************************************************************************/ |
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| 527 | static AbsVertexInfo_t * |
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| 528 | LookUpIdentifier( |
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| 529 | lsList vertexList, |
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| 530 | boolean polarity, |
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| 531 | char *name, |
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| 532 | char *value) |
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| 533 | { |
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| 534 | lsGen listGen; |
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| 535 | AbsVertexInfo_t *result; |
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| 536 | |
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| 537 | /* Start the generator and traverse the list */ |
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| 538 | listGen = lsStart(vertexList); |
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| 539 | while(lsNext(listGen, &result, NIL(lsHandle)) == LS_OK) { |
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| 540 | if (AbsVertexReadPolarity(result) == polarity && |
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| 541 | strcmp(AbsVertexReadName(result), name) == 0 && |
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| 542 | strcmp(AbsVertexReadValue(result), value) == 0) { |
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| 543 | AbsVertexReadRefs(result)++; |
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| 544 | lsFinish(listGen); |
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| 545 | return result; |
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| 546 | } |
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| 547 | } |
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| 548 | |
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| 549 | /* Item has not been found */ |
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| 550 | lsFinish(listGen); |
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| 551 | result = AbsVertexInitialize(); |
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| 552 | lsNewBegin(vertexList, (lsGeneric)result, NIL(lsHandle)); |
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| 553 | |
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| 554 | return result; |
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| 555 | } /* End of LookUpIdentifier */ |
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| 556 | |
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| 557 | /**Function******************************************************************** |
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| 558 | |
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| 559 | Synopsis [Find or add a vertex to the list of preimages] |
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| 560 | |
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| 561 | SideEffects [] |
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| 562 | |
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| 563 | SeeAlso [AbsVertexCatalogFindOrAdd] |
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| 564 | |
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| 565 | ******************************************************************************/ |
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| 566 | static AbsVertexInfo_t * |
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| 567 | LookUpPreImage( |
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| 568 | lsList vertexList, |
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| 569 | boolean polarity, |
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| 570 | AbsVertexInfo_t *leftKid) |
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| 571 | { |
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| 572 | lsGen listGen; |
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| 573 | AbsVertexInfo_t *result; |
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| 574 | |
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| 575 | /* Start the generator and traverse the list */ |
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| 576 | listGen = lsStart(vertexList); |
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| 577 | while(lsNext(listGen, &result, NIL(lsHandle)) == LS_OK) { |
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| 578 | if (AbsVertexReadLeftKid(result) == leftKid && |
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| 579 | AbsVertexReadPolarity(result) == polarity) { |
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| 580 | AbsVertexReadRefs(result)++; |
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| 581 | lsFinish(listGen); |
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| 582 | return result; |
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| 583 | } |
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| 584 | } |
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| 585 | |
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| 586 | /* Item has not been found */ |
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| 587 | lsFinish(listGen); |
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| 588 | result = AbsVertexInitialize(); |
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| 589 | lsNewBegin(vertexList, (lsGeneric)result, NIL(lsHandle)); |
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| 590 | |
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| 591 | return result; |
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| 592 | } /* End of LookUpPreImage */ |
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| 593 | |
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| 594 | /**Function******************************************************************** |
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| 595 | |
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| 596 | Synopsis [Find or add a vertex to the list of variables] |
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| 597 | |
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| 598 | SideEffects [] |
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| 599 | |
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| 600 | SeeAlso [AbsVertexCatalogFindOrAdd] |
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| 601 | |
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| 602 | ******************************************************************************/ |
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| 603 | static AbsVertexInfo_t * |
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| 604 | LookUpVariable( |
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| 605 | lsList vertexList, |
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| 606 | boolean polarity, |
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| 607 | int localId) |
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| 608 | { |
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| 609 | lsGen listGen; |
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| 610 | AbsVertexInfo_t *result; |
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| 611 | |
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| 612 | /* Start the generator and traverse the list */ |
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| 613 | listGen = lsStart(vertexList); |
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| 614 | while(lsNext(listGen, &result, NIL(lsHandle)) == LS_OK) { |
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| 615 | if (AbsVertexReadPolarity(result) == polarity && |
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| 616 | AbsVertexReadVarId(result) == localId) { |
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| 617 | AbsVertexReadRefs(result)++; |
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| 618 | lsFinish(listGen); |
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| 619 | return result; |
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| 620 | } |
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| 621 | } |
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| 622 | |
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| 623 | /* Item has not been found */ |
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| 624 | lsFinish(listGen); |
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| 625 | result = AbsVertexInitialize(); |
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| 626 | lsNewBegin(vertexList, (lsGeneric)result, NIL(lsHandle)); |
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| 627 | |
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| 628 | return result; |
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| 629 | } /* End of LookUpVariable */ |
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| 630 | |
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