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add javac handler
Conflicts: src/core/lombok/experimental/SuperBuilder.java
This commit is contained in:
Jan Rieke authored and Jan Rieke committed
1 parent
3eea3b9589
commit
aef9cdc392
1 file changed
+649
@@ -0,0 +1,649 @@
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/*
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* Copyright (C) 2013-2018 The Project Lombok Authors.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package lombok.javac.handlers;
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import static lombok.core.handlers.HandlerUtil.*;
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import static lombok.javac.Javac.*;
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import static lombok.javac.handlers.JavacHandlerUtil.*;
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import java.util.ArrayList;
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import org.mangosdk.spi.ProviderFor;
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import com.sun.tools.javac.code.Flags;
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import com.sun.tools.javac.tree.JCTree;
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import com.sun.tools.javac.tree.JCTree.JCAnnotation;
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import com.sun.tools.javac.tree.JCTree.JCBlock;
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import com.sun.tools.javac.tree.JCTree.JCClassDecl;
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import com.sun.tools.javac.tree.JCTree.JCExpression;
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import com.sun.tools.javac.tree.JCTree.JCFieldAccess;
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import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
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import com.sun.tools.javac.tree.JCTree.JCMethodInvocation;
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import com.sun.tools.javac.tree.JCTree.JCModifiers;
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import com.sun.tools.javac.tree.JCTree.JCStatement;
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import com.sun.tools.javac.tree.JCTree.JCTypeApply;
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import com.sun.tools.javac.tree.JCTree.JCTypeParameter;
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import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
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import com.sun.tools.javac.util.List;
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import com.sun.tools.javac.util.ListBuffer;
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import com.sun.tools.javac.util.Name;
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import lombok.AccessLevel;
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import lombok.Builder;
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import lombok.Builder.ObtainVia;
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import lombok.ConfigurationKeys;
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import lombok.Singular;
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import lombok.core.AST.Kind;
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import lombok.core.AnnotationValues;
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import lombok.core.HandlerPriority;
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import lombok.core.handlers.HandlerUtil;
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import lombok.experimental.NonFinal;
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import lombok.experimental.SuperBuilder;
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import lombok.javac.Javac;
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import lombok.javac.JavacAnnotationHandler;
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import lombok.javac.JavacNode;
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import lombok.javac.JavacTreeMaker;
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import lombok.javac.handlers.JavacHandlerUtil.FieldAccess;
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import lombok.javac.handlers.JavacHandlerUtil.MemberExistsResult;
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import lombok.javac.handlers.JavacSingularsRecipes.JavacSingularizer;
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import lombok.javac.handlers.JavacSingularsRecipes.SingularData;
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@ProviderFor(JavacAnnotationHandler.class)
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@HandlerPriority(-1024) //-2^10; to ensure we've picked up @FieldDefault's changes (-2048) but @Value hasn't removed itself yet (-512), so that we can error on presence of it on the builder classes.
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public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> {
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// private HandleConstructor handleConstructor = new HandleConstructor();
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// private static final boolean toBoolean(Object expr, boolean defaultValue) {
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// if (expr == null) return defaultValue;
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// if (expr instanceof JCLiteral) return ((Integer) ((JCLiteral) expr).value) != 0;
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// return ((Boolean) expr).booleanValue();
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// }
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private static class BuilderFieldData {
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JCExpression type;
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Name rawName;
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Name name;
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Name nameOfDefaultProvider;
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Name nameOfSetFlag;
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SingularData singularData;
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ObtainVia obtainVia;
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JavacNode obtainViaNode;
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JavacNode originalFieldNode;
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java.util.List<JavacNode> createdFields = new ArrayList<JavacNode>();
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}
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@Override public void handle(AnnotationValues<SuperBuilder> annotation, JCAnnotation ast, JavacNode annotationNode) {
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SuperBuilder builderInstance = annotation.getInstance();
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String builderMethodName = builderInstance.builderMethodName();
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String buildMethodName = builderInstance.buildMethodName();
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String builderClassName = builderInstance.builderClassName();
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String superclassBuilderClassName = builderInstance.superclassBuilderClassName();
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boolean inherit = builderInstance.inherit();
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String toBuilderMethodName = "toBuilder";
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boolean toBuilder = builderInstance.toBuilder();
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if (builderMethodName == null) builderMethodName = "builder";
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if (buildMethodName == null) buildMethodName = "build";
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if (builderClassName == null) builderClassName = "";
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if (superclassBuilderClassName == null) superclassBuilderClassName = "";
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if (!checkName("builderMethodName", builderMethodName, annotationNode)) return;
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if (!checkName("buildMethodName", buildMethodName, annotationNode)) return;
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if (!builderClassName.isEmpty()) {
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if (!checkName("builderClassName", builderClassName, annotationNode)) return;
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}
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JavacNode tdParent = annotationNode.up();
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java.util.List<BuilderFieldData> builderFields = new ArrayList<BuilderFieldData>();
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JCExpression returnType;
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List<JCTypeParameter> typeParams = List.nil();
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List<JCExpression> thrownExceptions = List.nil();
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boolean addCleaning = false;
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if (!(tdParent.get() instanceof JCClassDecl)) {
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annotationNode.addError("@SuperBuilder is only supported on types.");
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return;
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}
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// Gather all fields of the class that should be set by the builder.
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JCClassDecl td = (JCClassDecl) tdParent.get();
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ListBuffer<JavacNode> allFields = new ListBuffer<JavacNode>();
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boolean valuePresent = (hasAnnotation(lombok.Value.class, tdParent) || hasAnnotation("lombok.experimental.Value", tdParent));
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for (JavacNode fieldNode : HandleConstructor.findAllFields(tdParent, true)) {
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JCVariableDecl fd = (JCVariableDecl) fieldNode.get();
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JavacNode isDefault = findAnnotation(Builder.Default.class, fieldNode, true);
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boolean isFinal = (fd.mods.flags & Flags.FINAL) != 0 || (valuePresent && !hasAnnotation(NonFinal.class, fieldNode));
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BuilderFieldData bfd = new BuilderFieldData();
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bfd.rawName = fd.name;
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bfd.name = removePrefixFromField(fieldNode);
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bfd.type = fd.vartype;
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bfd.singularData = getSingularData(fieldNode);
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bfd.originalFieldNode = fieldNode;
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if (bfd.singularData != null && isDefault != null) {
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isDefault.addError("@Builder.Default and @Singular cannot be mixed.");
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isDefault = null;
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}
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if (fd.init == null && isDefault != null) {
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isDefault.addWarning("@Builder.Default requires an initializing expression (' = something;').");
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isDefault = null;
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}
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if (fd.init != null && isDefault == null) {
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if (isFinal) continue;
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fieldNode.addWarning("@SuperBuilder will ignore the initializing expression entirely. If you want the initializing expression to serve as default, add @Builder.Default. If it is not supposed to be settable during building, make the field final.");
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}
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if (isDefault != null) {
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bfd.nameOfDefaultProvider = tdParent.toName("$default$" + bfd.name);
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bfd.nameOfSetFlag = tdParent.toName(bfd.name + "$set");
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JCMethodDecl md = generateDefaultProvider(bfd.nameOfDefaultProvider, fieldNode, td.typarams);
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recursiveSetGeneratedBy(md, ast, annotationNode.getContext());
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if (md != null) injectMethod(tdParent, md);
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}
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addObtainVia(bfd, fieldNode);
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builderFields.add(bfd);
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allFields.append(fieldNode);
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}
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// Set the default names of the builder classes if not customized via annotation.
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if (builderClassName.isEmpty()) builderClassName = td.name.toString() + "Builder";
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String builderImplClassName = builderClassName + "Impl";
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JCTree extendsClause = Javac.getExtendsClause(td);
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if (superclassBuilderClassName.isEmpty() && extendsClause != null) {
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superclassBuilderClassName = extendsClause + "Builder";
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}
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boolean useInheritanceOnBuilder = extendsClause != null && inherit;
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generateBuilderBasedConstructor(tdParent, builderFields, annotationNode, builderClassName, useInheritanceOnBuilder);
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returnType = namePlusTypeParamsToTypeReference(tdParent.getTreeMaker(), td.name, td.typarams);
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typeParams = td.typarams;
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thrownExceptions = List.nil();
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// Create the abstract builder class.
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JavacNode builderType = findInnerClass(tdParent, builderClassName);
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if (builderType == null) {
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builderType = makeBuilderClass(true, true, annotationNode, tdParent, builderClassName, useInheritanceOnBuilder ? superclassBuilderClassName : null, typeParams, ast);
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} else {
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annotationNode.addError("@SuperBuilder does not support customized builders. Use @Builder instead.");
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}
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// Create the builder implementation class.
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JavacNode builderImplType = findInnerClass(tdParent, builderImplClassName);
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if (builderImplType == null) {
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builderImplType = makeBuilderClass(false, false, annotationNode, tdParent, builderImplClassName, builderClassName, typeParams, ast);
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} else {
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annotationNode.addError("@SuperBuilder does not support customized builders. Use @Builder instead.");
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}
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// Check that all builder fields for @Singular and @ObtainVia.
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for (BuilderFieldData bfd : builderFields) {
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if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) {
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if (bfd.singularData.getSingularizer().requiresCleaning()) {
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addCleaning = true;
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break;
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}
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}
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if (bfd.obtainVia != null) {
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if (bfd.obtainVia.field().isEmpty() == bfd.obtainVia.method().isEmpty()) {
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bfd.obtainViaNode.addError("The syntax is either @ObtainVia(field = \"fieldName\") or @ObtainVia(method = \"methodName\").");
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return;
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}
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if (bfd.obtainVia.method().isEmpty() && bfd.obtainVia.isStatic()) {
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bfd.obtainViaNode.addError("@ObtainVia(isStatic = true) is not valid unless 'method' has been set.");
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return;
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}
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}
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}
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// Generate the fields in the builder class that hold the values for the instance.
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generateBuilderFields(builderType, builderFields, ast);
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if (addCleaning) {
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JavacTreeMaker maker = builderType.getTreeMaker();
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JCVariableDecl uncleanField = maker.VarDef(maker.Modifiers(Flags.PRIVATE), builderType.toName("$lombokUnclean"), maker.TypeIdent(CTC_BOOLEAN), null);
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injectFieldAndMarkGenerated(builderType, uncleanField);
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}
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// Create a simple constructor for the builder class.
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JCMethodDecl cd = HandleConstructor.createConstructor(AccessLevel.PRIVATE, List.<JCAnnotation>nil(), builderImplType, List.<JavacNode>nil(), false, annotationNode);
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if (cd != null) injectMethod(builderImplType, cd);
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// Create the setter methods in the abstract builder.
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for (BuilderFieldData bfd : builderFields) {
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makeSetterMethodsForBuilder(builderType, bfd, annotationNode);
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}
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// Create the build() method in the BuilderImpl.
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if (methodExists(buildMethodName, builderType, -1) == MemberExistsResult.NOT_EXISTS) {
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JCMethodDecl md = generateBuildMethod(tdParent, buildMethodName, returnType, builderImplType, thrownExceptions, ast);
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if (md != null) injectMethod(builderImplType, md);
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}
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// Create the toString() method for the abstract builder.
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if (methodExists("toString", builderType, 0) == MemberExistsResult.NOT_EXISTS) {
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java.util.List<JavacNode> fieldNodes = new ArrayList<JavacNode>();
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for (BuilderFieldData bfd : builderFields) {
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fieldNodes.addAll(bfd.createdFields);
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}
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JCMethodDecl md = HandleToString.createToString(builderType, fieldNodes, true, false, FieldAccess.ALWAYS_FIELD, ast);
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if (md != null) injectMethod(builderType, md);
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}
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if (addCleaning) injectMethod(builderType, generateCleanMethod(builderFields, builderType, ast));
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// Add the builder() method to the annotated class.
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if (methodExists(builderMethodName, tdParent, -1) == MemberExistsResult.NOT_EXISTS) {
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JCMethodDecl md = generateBuilderMethod(builderMethodName, builderClassName, builderImplClassName, annotationNode, tdParent, typeParams);
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recursiveSetGeneratedBy(md, ast, annotationNode.getContext());
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if (md != null) injectMethod(tdParent, md);
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}
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if (toBuilder) {
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switch (methodExists(toBuilderMethodName, tdParent, 0)) {
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case EXISTS_BY_USER:
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annotationNode.addWarning("Not generating toBuilder() as it already exists.");
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return;
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case NOT_EXISTS:
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List<JCTypeParameter> tps = typeParams;
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JCMethodDecl md = generateToBuilderMethod(toBuilderMethodName, builderClassName, tdParent, tps, builderFields, ast);
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if (md != null) injectMethod(tdParent, md);
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}
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}
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recursiveSetGeneratedBy(builderType.get(), ast, annotationNode.getContext());
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recursiveSetGeneratedBy(builderImplType.get(), ast, annotationNode.getContext());
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}
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// private static String unpack(JCExpression expr) {
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// StringBuilder sb = new StringBuilder();
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// unpack(sb, expr);
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// return sb.toString();
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// }
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// private static void unpack(StringBuilder sb, JCExpression expr) {
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// if (expr instanceof JCIdent) {
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// sb.append(((JCIdent) expr).name.toString());
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// return;
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// }
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//
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// if (expr instanceof JCFieldAccess) {
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// JCFieldAccess jcfa = (JCFieldAccess) expr;
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// unpack(sb, jcfa.selected);
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// sb.append(".").append(jcfa.name.toString());
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// return;
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// }
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//
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// if (expr instanceof JCTypeApply) {
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// sb.setLength(0);
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// sb.append("ERR:");
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// sb.append("@Builder(toBuilder=true) is not supported if returning a type with generics applied to an intermediate.");
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// sb.append("__ERR__");
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// return;
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// }
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//
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// sb.setLength(0);
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// sb.append("ERR:");
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// sb.append("Expected a type of some sort, not a " + expr.getClass().getName());
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// sb.append("__ERR__");
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// }
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/**
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* Generates a constructor that has a builder as the only parameter.
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* The values from the builder are used to initialize the fields of new instances.
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*
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* @param typeNode
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* the type (with the {@code @Builder} annotation) for which a
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* constructor should be generated.
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* @param builderFields a list of fields in the builder which should be assigned to new instances.
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* @param source the annotation (used for setting source code locations for the generated code).
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* @param callBuilderBasedSuperConstructor
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* If {@code true}, the constructor will explicitly call a super
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* constructor with the builder as argument. Requires
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* {@code builderClassAsParameter != null}.
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*/
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private void generateBuilderBasedConstructor(JavacNode typeNode, java.util.List<BuilderFieldData> builderFields, JavacNode source, String builderClassName, boolean callBuilderBasedSuperConstructor) {
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JavacTreeMaker maker = typeNode.getTreeMaker();
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AccessLevel level = AccessLevel.PROTECTED;
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boolean isEnum = (((JCClassDecl) typeNode.get()).mods.flags & Flags.ENUM) != 0;
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if (isEnum) {
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level = AccessLevel.PRIVATE;
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}
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ListBuffer<JCStatement> nullChecks = new ListBuffer<JCStatement>();
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ListBuffer<JCStatement> statements = new ListBuffer<JCStatement>();
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Name builderVariableName = typeNode.toName("b");
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for (BuilderFieldData bfd : builderFields) {
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List<JCAnnotation> nonNulls = findAnnotations(bfd.originalFieldNode, NON_NULL_PATTERN);
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if (!nonNulls.isEmpty()) {
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JCStatement nullCheck = generateNullCheck(maker, bfd.originalFieldNode, source);
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if (nullCheck != null) {
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nullChecks.append(nullCheck);
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}
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}
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JCExpression rhs;
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if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) {
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bfd.singularData.getSingularizer().appendBuildCode(bfd.singularData, bfd.originalFieldNode, bfd.type, statements, bfd.name);
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rhs = maker.Ident(bfd.singularData.getPluralName());
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} else {
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rhs = maker.Select(maker.Ident(builderVariableName), bfd.rawName);
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}
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JCFieldAccess thisX = maker.Select(maker.Ident(bfd.originalFieldNode.toName("this")), bfd.rawName);
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JCExpression assign = maker.Assign(thisX, rhs);
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statements.append(maker.Exec(assign));
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}
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JCModifiers mods = maker.Modifiers(toJavacModifier(level), List.<JCAnnotation>nil());
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// Create a constructor that has just the builder as parameter.
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ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>();
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long flags = JavacHandlerUtil.addFinalIfNeeded(Flags.PARAMETER, typeNode.getContext());
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Name builderClassname = typeNode.toName(builderClassName);
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JCVariableDecl param = maker.VarDef(maker.Modifiers(flags), builderVariableName, maker.Ident(builderClassname), null);
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params.append(param);
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if (callBuilderBasedSuperConstructor) {
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// The first statement must be the call to the super constructor.
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JCMethodInvocation callToSuperConstructor = maker.Apply(List.<JCExpression>nil(),
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maker.Ident(typeNode.toName("super")),
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List.<JCExpression>of(maker.Ident(builderVariableName)));
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statements.prepend(maker.Exec(callToSuperConstructor));
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}
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JCMethodDecl constr = recursiveSetGeneratedBy(maker.MethodDef(mods, typeNode.toName("<init>"),
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null, List.<JCTypeParameter>nil(), params.toList(), List.<JCExpression>nil(),
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maker.Block(0L, nullChecks.appendList(statements).toList()), null), source.get(), typeNode.getContext());
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injectMethod(typeNode, constr, null, Javac.createVoidType(typeNode.getSymbolTable(), CTC_VOID));
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}
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private JCMethodDecl generateToBuilderMethod(String toBuilderMethodName, String builderClassName, JavacNode type, List<JCTypeParameter> typeParams, java.util.List<BuilderFieldData> builderFields, JCAnnotation ast) {
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// return new ThingieBuilder<A, B>().setA(this.a).setB(this.b);
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JavacTreeMaker maker = type.getTreeMaker();
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ListBuffer<JCExpression> typeArgs = new ListBuffer<JCExpression>();
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for (JCTypeParameter typeParam : typeParams) {
|
||||
typeArgs.append(maker.Ident(typeParam.name));
|
||||
}
|
||||
|
||||
JCExpression call = maker.NewClass(null, List.<JCExpression>nil(), namePlusTypeParamsToTypeReference(maker, type.toName(builderClassName), typeParams), List.<JCExpression>nil(), null);
|
||||
JCExpression invoke = call;
|
||||
for (BuilderFieldData bfd : builderFields) {
|
||||
Name setterName = bfd.name;
|
||||
JCExpression arg;
|
||||
if (bfd.obtainVia == null || !bfd.obtainVia.field().isEmpty()) {
|
||||
arg = maker.Select(maker.Ident(type.toName("this")), bfd.obtainVia == null ? bfd.rawName : type.toName(bfd.obtainVia.field()));
|
||||
} else {
|
||||
if (bfd.obtainVia.isStatic()) {
|
||||
JCExpression c = maker.Select(maker.Ident(type.toName(type.getName())), type.toName(bfd.obtainVia.method()));
|
||||
arg = maker.Apply(List.<JCExpression>nil(), c, List.<JCExpression>of(maker.Ident(type.toName("this"))));
|
||||
} else {
|
||||
JCExpression c = maker.Select(maker.Ident(type.toName("this")), type.toName(bfd.obtainVia.method()));
|
||||
arg = maker.Apply(List.<JCExpression>nil(), c, List.<JCExpression>nil());
|
||||
}
|
||||
}
|
||||
invoke = maker.Apply(List.<JCExpression>nil(), maker.Select(invoke, setterName), List.of(arg));
|
||||
}
|
||||
JCStatement statement = maker.Return(invoke);
|
||||
|
||||
JCBlock body = maker.Block(0, List.<JCStatement>of(statement));
|
||||
return maker.MethodDef(maker.Modifiers(Flags.PUBLIC), type.toName(toBuilderMethodName), namePlusTypeParamsToTypeReference(maker, type.toName(builderClassName), typeParams), List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null);
|
||||
}
|
||||
|
||||
private JCMethodDecl generateCleanMethod(java.util.List<BuilderFieldData> builderFields, JavacNode type, JCTree source) {
|
||||
JavacTreeMaker maker = type.getTreeMaker();
|
||||
ListBuffer<JCStatement> statements = new ListBuffer<JCStatement>();
|
||||
|
||||
for (BuilderFieldData bfd : builderFields) {
|
||||
if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) {
|
||||
bfd.singularData.getSingularizer().appendCleaningCode(bfd.singularData, type, source, statements);
|
||||
}
|
||||
}
|
||||
|
||||
statements.append(maker.Exec(maker.Assign(maker.Select(maker.Ident(type.toName("this")), type.toName("$lombokUnclean")), maker.Literal(CTC_BOOLEAN, 0))));
|
||||
JCBlock body = maker.Block(0, statements.toList());
|
||||
return maker.MethodDef(maker.Modifiers(Flags.PUBLIC), type.toName("$lombokClean"), maker.Type(Javac.createVoidType(type.getSymbolTable(), CTC_VOID)), List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null);
|
||||
/*
|
||||
* if (shouldReturnThis) {
|
||||
methodType = cloneSelfType(field);
|
||||
}
|
||||
|
||||
if (methodType == null) {
|
||||
//WARNING: Do not use field.getSymbolTable().voidType - that field has gone through non-backwards compatible API changes within javac1.6.
|
||||
methodType = treeMaker.Type(Javac.createVoidType(treeMaker, CTC_VOID));
|
||||
shouldReturnThis = false;
|
||||
}
|
||||
|
||||
*/
|
||||
}
|
||||
|
||||
private JCMethodDecl generateBuildMethod(JavacNode tdParent, String buildName, JCExpression returnType, JavacNode type, List<JCExpression> thrownExceptions, JCTree source) {
|
||||
JavacTreeMaker maker = type.getTreeMaker();
|
||||
|
||||
JCExpression call;
|
||||
ListBuffer<JCStatement> statements = new ListBuffer<JCStatement>();
|
||||
|
||||
// Use a constructor that only has this builder as parameter.
|
||||
List<JCExpression> builderArg = List.<JCExpression>of(maker.Ident(type.toName("this")));
|
||||
call = maker.NewClass(null, List.<JCExpression>nil(), returnType, builderArg, null);
|
||||
statements.append(maker.Return(call));
|
||||
|
||||
JCBlock body = maker.Block(0, statements.toList());
|
||||
|
||||
return maker.MethodDef(maker.Modifiers(Flags.PUBLIC), type.toName(buildName), returnType, List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), thrownExceptions, body, null);
|
||||
}
|
||||
|
||||
public JCMethodDecl generateDefaultProvider(Name methodName, JavacNode fieldNode, List<JCTypeParameter> params) {
|
||||
JavacTreeMaker maker = fieldNode.getTreeMaker();
|
||||
JCVariableDecl field = (JCVariableDecl) fieldNode.get();
|
||||
|
||||
JCStatement statement = maker.Return(field.init);
|
||||
field.init = null;
|
||||
|
||||
JCBlock body = maker.Block(0, List.<JCStatement>of(statement));
|
||||
int modifiers = Flags.PRIVATE | Flags.STATIC;
|
||||
return maker.MethodDef(maker.Modifiers(modifiers), methodName, cloneType(maker, field.vartype, field, fieldNode.getContext()), copyTypeParams(fieldNode, params), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null);
|
||||
}
|
||||
|
||||
public JCMethodDecl generateBuilderMethod(String builderMethodName, String builderClassName, String builderImplClassName, JavacNode source, JavacNode type, List<JCTypeParameter> typeParams) {
|
||||
JavacTreeMaker maker = type.getTreeMaker();
|
||||
|
||||
ListBuffer<JCExpression> typeArgs = new ListBuffer<JCExpression>();
|
||||
for (JCTypeParameter typeParam : typeParams) {
|
||||
typeArgs.append(maker.Ident(typeParam.name));
|
||||
}
|
||||
|
||||
JCExpression call = maker.NewClass(null, List.<JCExpression>nil(), namePlusTypeParamsToTypeReference(maker, type.toName(builderImplClassName), typeParams), List.<JCExpression>nil(), null);
|
||||
JCStatement statement = maker.Return(call);
|
||||
|
||||
JCBlock body = maker.Block(0, List.<JCStatement>of(statement));
|
||||
int modifiers = Flags.PUBLIC;
|
||||
modifiers |= Flags.STATIC;
|
||||
return maker.MethodDef(maker.Modifiers(modifiers), type.toName(builderMethodName), namePlusTypeParamsToTypeReference(maker, type.toName(builderClassName), typeParams), copyTypeParams(source, typeParams), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null);
|
||||
}
|
||||
|
||||
public void generateBuilderFields(JavacNode builderType, java.util.List<BuilderFieldData> builderFields, JCTree source) {
|
||||
int len = builderFields.size();
|
||||
java.util.List<JavacNode> existing = new ArrayList<JavacNode>();
|
||||
for (JavacNode child : builderType.down()) {
|
||||
if (child.getKind() == Kind.FIELD) existing.add(child);
|
||||
}
|
||||
|
||||
for (int i = len - 1; i >= 0; i--) {
|
||||
BuilderFieldData bfd = builderFields.get(i);
|
||||
if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) {
|
||||
bfd.createdFields.addAll(bfd.singularData.getSingularizer().generateFields(bfd.singularData, builderType, source));
|
||||
} else {
|
||||
JavacNode field = null, setFlag = null;
|
||||
for (JavacNode exists : existing) {
|
||||
Name n = ((JCVariableDecl) exists.get()).name;
|
||||
if (n.equals(bfd.name)) field = exists;
|
||||
if (n.equals(bfd.nameOfSetFlag)) setFlag = exists;
|
||||
}
|
||||
JavacTreeMaker maker = builderType.getTreeMaker();
|
||||
if (field == null) {
|
||||
JCModifiers mods = maker.Modifiers(Flags.PRIVATE);
|
||||
JCVariableDecl newField = maker.VarDef(mods, bfd.name, cloneType(maker, bfd.type, source, builderType.getContext()), null);
|
||||
field = injectFieldAndMarkGenerated(builderType, newField);
|
||||
}
|
||||
if (setFlag == null && bfd.nameOfSetFlag != null) {
|
||||
JCModifiers mods = maker.Modifiers(Flags.PRIVATE);
|
||||
JCVariableDecl newField = maker.VarDef(mods, bfd.nameOfSetFlag, maker.TypeIdent(CTC_BOOLEAN), null);
|
||||
injectFieldAndMarkGenerated(builderType, newField);
|
||||
}
|
||||
bfd.createdFields.add(field);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public void makeSetterMethodsForBuilder(JavacNode builderType, BuilderFieldData fieldNode, JavacNode source) {
|
||||
boolean deprecate = isFieldDeprecated(fieldNode.originalFieldNode);
|
||||
if (fieldNode.singularData == null || fieldNode.singularData.getSingularizer() == null) {
|
||||
makeSimpleSetterMethodForBuilder(builderType, deprecate, fieldNode.createdFields.get(0), fieldNode.nameOfSetFlag, source, true, true);
|
||||
} else {
|
||||
fieldNode.singularData.getSingularizer().generateMethods(fieldNode.singularData, deprecate, builderType, source.get(), true, true);
|
||||
}
|
||||
}
|
||||
|
||||
private void makeSimpleSetterMethodForBuilder(JavacNode builderType, boolean deprecate, JavacNode fieldNode, Name nameOfSetFlag, JavacNode source, boolean fluent, boolean chain) {
|
||||
Name fieldName = ((JCVariableDecl) fieldNode.get()).name;
|
||||
|
||||
for (JavacNode child : builderType.down()) {
|
||||
if (child.getKind() != Kind.METHOD) continue;
|
||||
JCMethodDecl methodDecl = (JCMethodDecl) child.get();
|
||||
Name existingName = methodDecl.name;
|
||||
if (existingName.equals(fieldName) && !isTolerate(fieldNode, methodDecl)) return;
|
||||
}
|
||||
|
||||
String setterName = fluent ? fieldNode.getName() : HandlerUtil.buildAccessorName("set", fieldNode.getName());
|
||||
|
||||
JavacTreeMaker maker = fieldNode.getTreeMaker();
|
||||
|
||||
JCMethodDecl newMethod = HandleSetter.createSetter(Flags.PUBLIC, deprecate, fieldNode, maker, setterName, nameOfSetFlag, chain, source, List.<JCAnnotation>nil(), List.<JCAnnotation>nil());
|
||||
|
||||
injectMethod(builderType, newMethod);
|
||||
}
|
||||
|
||||
public JavacNode findInnerClass(JavacNode parent, String name) {
|
||||
for (JavacNode child : parent.down()) {
|
||||
if (child.getKind() != Kind.TYPE) continue;
|
||||
JCClassDecl td = (JCClassDecl) child.get();
|
||||
if (td.name.contentEquals(name)) return child;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
public JavacNode makeBuilderClass(boolean isAbstract, boolean isPublic, JavacNode source, JavacNode tdParent, String builderClassName, String parentBuilderClassName, List<JCTypeParameter> typeParams, JCAnnotation ast) {
|
||||
JavacTreeMaker maker = tdParent.getTreeMaker();
|
||||
int modifiers = Flags.STATIC;
|
||||
if (isAbstract) modifiers |= Flags.ABSTRACT;
|
||||
if (isPublic) {
|
||||
modifiers |= Flags.PUBLIC;
|
||||
} else {
|
||||
modifiers |= Flags.PRIVATE;
|
||||
}
|
||||
JCModifiers mods = maker.Modifiers(modifiers);
|
||||
|
||||
JCExpression extending = null;
|
||||
if (parentBuilderClassName != null) {
|
||||
extending = maker.Ident(tdParent.toName(parentBuilderClassName));
|
||||
}
|
||||
JCClassDecl builder = maker.ClassDef(mods, tdParent.toName(builderClassName), copyTypeParams(source, typeParams), extending, List.<JCExpression>nil(), List.<JCTree>nil());
|
||||
return injectType(tdParent, builder);
|
||||
}
|
||||
|
||||
private void addObtainVia(BuilderFieldData bfd, JavacNode node) {
|
||||
for (JavacNode child : node.down()) {
|
||||
if (!annotationTypeMatches(ObtainVia.class, child)) continue;
|
||||
AnnotationValues<ObtainVia> ann = createAnnotation(ObtainVia.class, child);
|
||||
bfd.obtainVia = ann.getInstance();
|
||||
bfd.obtainViaNode = child;
|
||||
deleteAnnotationIfNeccessary(child, ObtainVia.class);
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the explicitly requested singular annotation on this node (field
|
||||
* or parameter), or null if there's no {@code @Singular} annotation on it.
|
||||
*
|
||||
* @param node The node (field or method param) to inspect for its name and potential {@code @Singular} annotation.
|
||||
*/
|
||||
private SingularData getSingularData(JavacNode node) {
|
||||
for (JavacNode child : node.down()) {
|
||||
if (!annotationTypeMatches(Singular.class, child)) continue;
|
||||
Name pluralName = node.getKind() == Kind.FIELD ? removePrefixFromField(node) : ((JCVariableDecl) node.get()).name;
|
||||
AnnotationValues<Singular> ann = createAnnotation(Singular.class, child);
|
||||
deleteAnnotationIfNeccessary(child, Singular.class);
|
||||
String explicitSingular = ann.getInstance().value();
|
||||
if (explicitSingular.isEmpty()) {
|
||||
if (Boolean.FALSE.equals(node.getAst().readConfiguration(ConfigurationKeys.SINGULAR_AUTO))) {
|
||||
node.addError("The singular must be specified explicitly (e.g. @Singular(\"task\")) because auto singularization is disabled.");
|
||||
explicitSingular = pluralName.toString();
|
||||
} else {
|
||||
explicitSingular = autoSingularize(pluralName.toString());
|
||||
if (explicitSingular == null) {
|
||||
node.addError("Can't singularize this name; please specify the singular explicitly (i.e. @Singular(\"sheep\"))");
|
||||
explicitSingular = pluralName.toString();
|
||||
}
|
||||
}
|
||||
}
|
||||
Name singularName = node.toName(explicitSingular);
|
||||
|
||||
JCExpression type = null;
|
||||
if (node.get() instanceof JCVariableDecl) {
|
||||
type = ((JCVariableDecl) node.get()).vartype;
|
||||
}
|
||||
|
||||
String name = null;
|
||||
List<JCExpression> typeArgs = List.nil();
|
||||
if (type instanceof JCTypeApply) {
|
||||
typeArgs = ((JCTypeApply) type).arguments;
|
||||
type = ((JCTypeApply) type).clazz;
|
||||
}
|
||||
|
||||
name = type.toString();
|
||||
|
||||
String targetFqn = JavacSingularsRecipes.get().toQualified(name);
|
||||
JavacSingularizer singularizer = JavacSingularsRecipes.get().getSingularizer(targetFqn);
|
||||
if (singularizer == null) {
|
||||
node.addError("Lombok does not know how to create the singular-form builder methods for type '" + name + "'; they won't be generated.");
|
||||
return null;
|
||||
}
|
||||
|
||||
return new SingularData(child, singularName, pluralName, typeArgs, targetFqn, singularizer);
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
}
|
||||
Reference in new issue
Block a user