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...a/hu/bme/mit/theta/frontend/transformation/grammar/expression/UnsupportedInitializer.java
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| package hu.bme.mit.theta.frontend.transformation.grammar.expression; | ||
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| import hu.bme.mit.theta.core.model.Valuation; | ||
| import hu.bme.mit.theta.core.type.LitExpr; | ||
| import hu.bme.mit.theta.core.type.NullaryExpr; | ||
| import hu.bme.mit.theta.core.type.inttype.IntType; | ||
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| import static hu.bme.mit.theta.core.type.inttype.IntExprs.Int; | ||
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| public class UnsupportedInitializer extends NullaryExpr<IntType> { | ||
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| @Override | ||
| public IntType getType() { | ||
| return Int(); | ||
| } | ||
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| @Override | ||
| public LitExpr<IntType> eval(Valuation val) { | ||
| throw new UnsupportedOperationException("UnsupportedInitializer expressions are not supported."); | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return "UnsupportedInitializer"; | ||
| } | ||
| } |
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51
subprojects/xcfa/xcfa/src/main/java/hu/bme/mit/theta/xcfa/passes/UnusedWriteRemovalPass.kt
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| /* | ||
| * Copyright 2023 Budapest University of Technology and Economics | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
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| package hu.bme.mit.theta.xcfa.passes | ||
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| import hu.bme.mit.theta.core.decl.VarDecl | ||
| import hu.bme.mit.theta.core.stmt.AssignStmt | ||
| import hu.bme.mit.theta.core.stmt.HavocStmt | ||
| import hu.bme.mit.theta.xcfa.collectVarsWithAccessType | ||
| import hu.bme.mit.theta.xcfa.isRead | ||
| import hu.bme.mit.theta.xcfa.model.* | ||
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| /** | ||
| * Remove unused writes from the program. | ||
| * Requires the ProcedureBuilder to be `deterministic` (@see DeterministicPass) | ||
| */ | ||
| class UnusedWriteRemovalPass : ProcedurePass { | ||
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| override fun run(builder: XcfaProcedureBuilder): XcfaProcedureBuilder { | ||
| checkNotNull(builder.metaData["deterministic"]) | ||
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| val usedVars = mutableSetOf<VarDecl<*>>() | ||
| builder.getEdges().forEach { | ||
| it.label.collectVarsWithAccessType().forEach { (varDecl, access) -> | ||
| if (access.isRead) usedVars.add(varDecl) | ||
| } | ||
| } | ||
| val unusedVars = builder.getVars() subtract usedVars subtract builder.getParams().map { it.first }.toSet() | ||
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| builder.getEdges().toList().forEach { edge -> | ||
| val newLabel = edge.label.removeUnusedWrites(unusedVars) | ||
| builder.removeEdge(edge) | ||
| builder.addEdge(edge.withLabel(newLabel)) | ||
| } | ||
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| return builder | ||
| } | ||
| } |
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