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72
...anguage-ruby/src/main/kotlin/de/fraunhofer/aisec/cpg/frontends/ruby/DeclarationHandler.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,27 +1,91 @@ | ||
| /* | ||
| * Copyright (c) 2023, 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.frontends.ruby | ||
|
|
||
| import de.fraunhofer.aisec.cpg.frontends.Handler | ||
| import de.fraunhofer.aisec.cpg.graph.declarations.Declaration | ||
| import de.fraunhofer.aisec.cpg.graph.declarations.FunctionDeclaration | ||
| import de.fraunhofer.aisec.cpg.graph.declarations.ProblemDeclaration | ||
| import de.fraunhofer.aisec.cpg.graph.newFunctionDeclaration | ||
| import de.fraunhofer.aisec.cpg.graph.newParameterDeclaration | ||
| import de.fraunhofer.aisec.cpg.graph.newReturnStatement | ||
| import de.fraunhofer.aisec.cpg.graph.statements.ReturnStatement | ||
| import de.fraunhofer.aisec.cpg.graph.statements.expressions.Block | ||
| import org.jruby.ast.ArgumentNode | ||
| import org.jruby.ast.MethodDefNode | ||
| import org.jruby.ast.Node | ||
|
|
||
| class DeclarationHandler(lang: RubyLanguageFrontend) : | ||
| Handler<Declaration, Node, RubyLanguageFrontend>({ ProblemDeclaration() }, lang) { | ||
|
|
||
| init { | ||
| map.put(ArgumentNode::class.java, ::handleArgumentNode) | ||
| map.put(MethodDefNode::class.java, ::handleMethodDefNode) | ||
| } | ||
|
|
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| private fun handleArgumentNode(node: Node?): Declaration? { | ||
| if (node !is ArgumentNode) { | ||
| return null | ||
| } | ||
|
|
||
| return newParameterDeclaration( | ||
| node.name.idString(), | ||
| variadic = false | ||
| ) | ||
| return newParameterDeclaration(node.name.idString(), variadic = false) | ||
| } | ||
|
|
||
| private fun handleMethodDefNode(node: Node): FunctionDeclaration? { | ||
| if (node !is MethodDefNode) { | ||
| return null | ||
| } | ||
|
|
||
| val func = newFunctionDeclaration(node.name.idString()) | ||
|
|
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| frontend.scopeManager.enterScope(func) | ||
|
|
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| for (arg in node.argsNode.args) { | ||
| val param = this.handle(arg) | ||
| param?.let { frontend.scopeManager.addDeclaration(it) } | ||
| } | ||
|
|
||
| val body = frontend.statementHandler.handle(node.bodyNode) | ||
| if (body is Block) { | ||
| // get the last statement | ||
| val lastStatement = body.statements.lastOrNull() | ||
|
|
||
| // add an implicit return statement, if there is no return statement | ||
| if (lastStatement !is ReturnStatement) { | ||
| val returnStatement = newReturnStatement("return") | ||
| returnStatement.isImplicit = true | ||
| body += returnStatement | ||
|
|
||
| // TODO: Ruby returns the last expression, if there is no explicit return | ||
| } | ||
| } | ||
| func.body = body | ||
|
|
||
| frontend.scopeManager.leaveScope(func) | ||
|
|
||
| return func | ||
| } | ||
| } |
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26 changes: 25 additions & 1 deletion
26
cpg-language-ruby/src/main/kotlin/de/fraunhofer/aisec/cpg/frontends/ruby/RubyLanguage.kt
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