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88 changes: 88 additions & 0 deletions
88
...rojects/common/core/src/main/java/hu/bme/mit/theta/core/type/bvtype/BvSignChangeExpr.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| /* | ||
| * 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.core.type.bvtype; | ||
|
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| import hu.bme.mit.theta.core.model.Valuation; | ||
| import hu.bme.mit.theta.core.type.Expr; | ||
| import hu.bme.mit.theta.core.type.abstracttype.PosExpr; | ||
|
|
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| import static hu.bme.mit.theta.core.utils.TypeUtils.castBv; | ||
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| public final class BvSignChangeExpr extends PosExpr<BvType> { | ||
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| private static final int HASH_SEED = 8963; | ||
| private static final String OPERATOR_LABEL = "bvpos"; | ||
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| private final BvType newType; | ||
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| private BvSignChangeExpr(final Expr<BvType> op, final BvType newType) { | ||
| super(op); | ||
| this.newType = newType; | ||
| } | ||
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| public static BvSignChangeExpr of(final Expr<BvType> op, final BvType newType) { | ||
| return new BvSignChangeExpr(op, newType); | ||
| } | ||
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| public static BvSignChangeExpr create(final Expr<?> op, final BvType newType) { | ||
| final Expr<BvType> newOp = castBv(op); | ||
| return BvSignChangeExpr.of(newOp, newType); | ||
| } | ||
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| @Override | ||
| public BvType getType() { | ||
| return newType; | ||
| } | ||
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| @Override | ||
| public BvLitExpr eval(final Valuation val) { | ||
| final BvLitExpr opVal = (BvLitExpr) getOp().eval(val); | ||
| return opVal.pos(); | ||
| } | ||
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| @Override | ||
| public BvSignChangeExpr with(final Expr<BvType> op) { | ||
| if (op == getOp()) { | ||
| return this; | ||
| } else { | ||
| return BvSignChangeExpr.of(op, newType); | ||
| } | ||
| } | ||
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| @Override | ||
| public boolean equals(final Object obj) { | ||
| if (this == obj) { | ||
| return true; | ||
| } else if (obj != null && this.getClass() == obj.getClass()) { | ||
| final BvSignChangeExpr that = (BvSignChangeExpr) obj; | ||
| return this.getOp().equals(that.getOp()) && this.getType().equals(that.getType()); | ||
| } else { | ||
| return false; | ||
| } | ||
| } | ||
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| @Override | ||
| protected int getHashSeed() { | ||
| return HASH_SEED; | ||
| } | ||
|
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| @Override | ||
| public String getOperatorLabel() { | ||
| return OPERATOR_LABEL; | ||
| } | ||
|
|
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| } |
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