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🦄 refactor: Redesign local variables
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src/main/java/com/caoccao/javet/buddy/ts2java/ast/Ts2JavaAstVarDecl.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,97 @@ | ||
| /* | ||
| * Copyright (c) 2024-2024. caoccao.com Sam Cao | ||
| * | ||
| * 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 com.caoccao.javet.buddy.ts2java.ast; | ||
|
|
||
| import com.caoccao.javet.buddy.ts2java.compiler.JavaClassCast; | ||
| import com.caoccao.javet.buddy.ts2java.compiler.JavaFunctionContext; | ||
| import com.caoccao.javet.buddy.ts2java.compiler.JavaLocalVariable; | ||
| import com.caoccao.javet.buddy.ts2java.exceptions.Ts2JavaAstException; | ||
| import com.caoccao.javet.swc4j.ast.expr.Swc4jAstIdent; | ||
| import com.caoccao.javet.swc4j.ast.interfaces.ISwc4jAstExpr; | ||
| import com.caoccao.javet.swc4j.ast.interfaces.ISwc4jAstPat; | ||
| import com.caoccao.javet.swc4j.ast.pat.Swc4jAstBindingIdent; | ||
| import com.caoccao.javet.swc4j.ast.stmt.Swc4jAstVarDecl; | ||
| import com.caoccao.javet.swc4j.ast.stmt.Swc4jAstVarDeclarator; | ||
| import com.caoccao.javet.swc4j.ast.ts.Swc4jAstTsTypeAnn; | ||
| import com.caoccao.javet.utils.SimpleFreeMarkerFormat; | ||
| import com.caoccao.javet.utils.SimpleMap; | ||
| import net.bytebuddy.description.type.TypeDescription; | ||
| import net.bytebuddy.implementation.bytecode.StackManipulation; | ||
| import net.bytebuddy.implementation.bytecode.member.MethodVariableAccess; | ||
|
|
||
| import java.util.Optional; | ||
|
|
||
| public final class Ts2JavaAstVarDecl implements ITs2JavaAstStackManipulation<Swc4jAstVarDecl> { | ||
| @Override | ||
| public Optional<TypeDescription> manipulate(JavaFunctionContext functionContext, Swc4jAstVarDecl ast) { | ||
| for (Swc4jAstVarDeclarator varDeclarator : ast.getDecls()) { | ||
| Optional<TypeDescription> optionalFromType = Optional.empty(); | ||
| if (varDeclarator.getInit().isPresent()) { | ||
| ISwc4jAstExpr expression = varDeclarator.getInit().get(); | ||
| switch (expression.getType()) { | ||
| case Ident: { | ||
| String name = expression.as(Swc4jAstIdent.class).getSym(); | ||
| JavaLocalVariable localVariable = functionContext.getLocalVariable(name); | ||
| MethodVariableAccess methodVariableAccess = MethodVariableAccess.of(localVariable.getType()); | ||
| StackManipulation stackManipulation = methodVariableAccess.loadFrom(localVariable.getOffset()); | ||
| functionContext.addStackManipulation(stackManipulation); | ||
| optionalFromType = Optional.of(localVariable.getType()); | ||
| break; | ||
| } | ||
| default: | ||
| throw new Ts2JavaAstException( | ||
| expression, | ||
| SimpleFreeMarkerFormat.format("VarDecl init type ${type} is not supported.", | ||
| SimpleMap.of("type", expression.getType().name()))); | ||
| } | ||
| } | ||
| ISwc4jAstPat pat = varDeclarator.getName(); | ||
| switch (pat.getType()) { | ||
| case BindingIdent: { | ||
| Swc4jAstBindingIdent bindingIdent = pat.as(Swc4jAstBindingIdent.class); | ||
| String name = bindingIdent.getId().getSym(); | ||
| if (bindingIdent.getTypeAnn().isPresent()) { | ||
| Swc4jAstTsTypeAnn tsTypeAnn = bindingIdent.getTypeAnn().get(); | ||
| TypeDescription toType = Ts2JavaAstTsTypeAnn.getTypeDescription(tsTypeAnn); | ||
| if (optionalFromType.isPresent()) { | ||
| TypeDescription fromType = optionalFromType.get(); | ||
| JavaClassCast.getUpCastStackManipulation(fromType, toType) | ||
| .ifPresent(functionContext::addStackManipulation); | ||
| } | ||
| JavaLocalVariable localVariable = new JavaLocalVariable(name, toType); | ||
| MethodVariableAccess methodVariableAccess = MethodVariableAccess.of(localVariable.getType()); | ||
| StackManipulation stackManipulation = methodVariableAccess.storeAt(functionContext.getMaxLocals()); | ||
| functionContext.addStackManipulation(stackManipulation); | ||
| functionContext.addLocalVariable(localVariable); | ||
| } else { | ||
| throw new Ts2JavaAstException( | ||
| bindingIdent, | ||
| SimpleFreeMarkerFormat.format("VarDecl name ${name} type annotation is missing.", | ||
| SimpleMap.of("name", name))); | ||
| } | ||
| break; | ||
| } | ||
| default: | ||
| throw new Ts2JavaAstException( | ||
| pat, | ||
| SimpleFreeMarkerFormat.format("VarDecl name type ${type} is not supported.", | ||
| SimpleMap.of("type", pat.getType().name()))); | ||
| } | ||
| } | ||
| return Optional.empty(); | ||
| } | ||
| } |
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