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93
cpg-core/src/main/kotlin/de/fraunhofer/aisec/cpg/graph/statements/ThrowStatement.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| /* | ||
| * Copyright (c) 2024, Fraunhofer AISEC. All rights reserved. | ||
| * | ||
| * 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. | ||
| * | ||
| * $$$$$$\ $$$$$$$\ $$$$$$\ | ||
| * $$ __$$\ $$ __$$\ $$ __$$\ | ||
| * $$ / \__|$$ | $$ |$$ / \__| | ||
| * $$ | $$$$$$$ |$$ |$$$$\ | ||
| * $$ | $$ ____/ $$ |\_$$ | | ||
| * $$ | $$\ $$ | $$ | $$ | | ||
| * \$$$$$ |$$ | \$$$$$ | | ||
| * \______/ \__| \______/ | ||
| * | ||
| */ | ||
| package de.fraunhofer.aisec.cpg.graph.statements | ||
|
|
||
| import de.fraunhofer.aisec.cpg.graph.ArgumentHolder | ||
| import de.fraunhofer.aisec.cpg.graph.edges.ast.astOptionalEdgeOf | ||
| import de.fraunhofer.aisec.cpg.graph.edges.unwrapping | ||
| import de.fraunhofer.aisec.cpg.graph.statements.expressions.Expression | ||
| import java.util.Objects | ||
| import org.apache.commons.lang3.builder.ToStringBuilder | ||
| import org.neo4j.ogm.annotation.Relationship | ||
|
|
||
| /** Represents a `throw` or `raise` statement. */ | ||
| class ThrowStatement : Statement(), ArgumentHolder { | ||
|
|
||
| /** The exception object to be raised. */ | ||
| @Relationship(value = "EXCEPTION") var exceptionEdge = astOptionalEdgeOf<Expression>() | ||
| var exception by unwrapping(ThrowStatement::exceptionEdge) | ||
|
|
||
| /** | ||
| * Some languages (Python) can add a parent exception (or `cause`) to indicate that an exception | ||
| * was raised while handling another exception. | ||
| */ | ||
| @Relationship(value = "PARENT_EXCEPTION") | ||
| var parentExceptionEdge = astOptionalEdgeOf<Expression>() | ||
| var parentException by unwrapping(ThrowStatement::parentExceptionEdge) | ||
|
|
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| override fun addArgument(expression: Expression) { | ||
| when { | ||
| exception == null -> exception = expression | ||
| parentException == null -> parentException = expression | ||
| } | ||
| } | ||
|
|
||
| override fun replaceArgument(old: Expression, new: Expression): Boolean { | ||
| return when { | ||
| exception == old -> { | ||
| exception = new | ||
| true | ||
| } | ||
| parentException == old -> { | ||
| parentException = new | ||
| true | ||
| } | ||
| else -> false | ||
| } | ||
| } | ||
|
|
||
| override fun hasArgument(expression: Expression): Boolean { | ||
| return exception == expression || parentException == expression | ||
| } | ||
|
|
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| override fun equals(other: Any?): Boolean { | ||
| if (this === other) return true | ||
| if (other !is ThrowStatement) return false | ||
| return super.equals(other) && | ||
| exception == other.exception && | ||
| parentException == other.parentException | ||
| } | ||
|
|
||
| override fun hashCode() = Objects.hash(super.hashCode(), exception, parentException) | ||
|
|
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| override fun toString(): String { | ||
| return ToStringBuilder(this, TO_STRING_STYLE) | ||
| .appendSuper(super.toString()) | ||
| .append("exception", exception) | ||
| .append("parentException", parentException) | ||
| .toString() | ||
| } | ||
| } |
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