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Diffstat (limited to 'src/core')
| -rw-r--r-- | src/core/lombok/javac/handlers/HandleSuperBuilder.java | 649 |
1 files changed, 649 insertions, 0 deletions
diff --git a/src/core/lombok/javac/handlers/HandleSuperBuilder.java b/src/core/lombok/javac/handlers/HandleSuperBuilder.java new file mode 100644 index 00000000..74b24bdb --- /dev/null +++ b/src/core/lombok/javac/handlers/HandleSuperBuilder.java @@ -0,0 +1,649 @@ +/* + * Copyright (C) 2013-2018 The Project Lombok Authors. + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +package lombok.javac.handlers; + +import static lombok.core.handlers.HandlerUtil.*; +import static lombok.javac.Javac.*; +import static lombok.javac.handlers.JavacHandlerUtil.*; + +import java.util.ArrayList; + +import org.mangosdk.spi.ProviderFor; + +import com.sun.tools.javac.code.Flags; +import com.sun.tools.javac.tree.JCTree; +import com.sun.tools.javac.tree.JCTree.JCAnnotation; +import com.sun.tools.javac.tree.JCTree.JCBlock; +import com.sun.tools.javac.tree.JCTree.JCClassDecl; +import com.sun.tools.javac.tree.JCTree.JCExpression; +import com.sun.tools.javac.tree.JCTree.JCFieldAccess; +import com.sun.tools.javac.tree.JCTree.JCMethodDecl; +import com.sun.tools.javac.tree.JCTree.JCMethodInvocation; +import com.sun.tools.javac.tree.JCTree.JCModifiers; +import com.sun.tools.javac.tree.JCTree.JCStatement; +import com.sun.tools.javac.tree.JCTree.JCTypeApply; +import com.sun.tools.javac.tree.JCTree.JCTypeParameter; +import com.sun.tools.javac.tree.JCTree.JCVariableDecl; +import com.sun.tools.javac.util.List; +import com.sun.tools.javac.util.ListBuffer; +import com.sun.tools.javac.util.Name; + +import lombok.AccessLevel; +import lombok.Builder; +import lombok.Builder.ObtainVia; +import lombok.ConfigurationKeys; +import lombok.Singular; +import lombok.core.AST.Kind; +import lombok.core.AnnotationValues; +import lombok.core.HandlerPriority; +import lombok.core.handlers.HandlerUtil; +import lombok.experimental.NonFinal; +import lombok.experimental.SuperBuilder; +import lombok.javac.Javac; +import lombok.javac.JavacAnnotationHandler; +import lombok.javac.JavacNode; +import lombok.javac.JavacTreeMaker; +import lombok.javac.handlers.JavacHandlerUtil.FieldAccess; +import lombok.javac.handlers.JavacHandlerUtil.MemberExistsResult; +import lombok.javac.handlers.JavacSingularsRecipes.JavacSingularizer; +import lombok.javac.handlers.JavacSingularsRecipes.SingularData; + +@ProviderFor(JavacAnnotationHandler.class) +@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. +public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> { +// private HandleConstructor handleConstructor = new HandleConstructor(); + +// private static final boolean toBoolean(Object expr, boolean defaultValue) { +// if (expr == null) return defaultValue; +// if (expr instanceof JCLiteral) return ((Integer) ((JCLiteral) expr).value) != 0; +// return ((Boolean) expr).booleanValue(); +// } + + private static class BuilderFieldData { + JCExpression type; + Name rawName; + Name name; + Name nameOfDefaultProvider; + Name nameOfSetFlag; + SingularData singularData; + ObtainVia obtainVia; + JavacNode obtainViaNode; + JavacNode originalFieldNode; + + java.util.List<JavacNode> createdFields = new ArrayList<JavacNode>(); + } + + @Override public void handle(AnnotationValues<SuperBuilder> annotation, JCAnnotation ast, JavacNode annotationNode) { + SuperBuilder builderInstance = annotation.getInstance(); + + String builderMethodName = builderInstance.builderMethodName(); + String buildMethodName = builderInstance.buildMethodName(); + String builderClassName = builderInstance.builderClassName(); + String superclassBuilderClassName = builderInstance.superclassBuilderClassName(); + boolean inherit = builderInstance.inherit(); + String toBuilderMethodName = "toBuilder"; + boolean toBuilder = builderInstance.toBuilder(); + + if (builderMethodName == null) builderMethodName = "builder"; + if (buildMethodName == null) buildMethodName = "build"; + if (builderClassName == null) builderClassName = ""; + if (superclassBuilderClassName == null) superclassBuilderClassName = ""; + + if (!checkName("builderMethodName", builderMethodName, annotationNode)) return; + if (!checkName("buildMethodName", buildMethodName, annotationNode)) return; + if (!builderClassName.isEmpty()) { + if (!checkName("builderClassName", builderClassName, annotationNode)) return; + } + + JavacNode tdParent = annotationNode.up(); + + java.util.List<BuilderFieldData> builderFields = new ArrayList<BuilderFieldData>(); + JCExpression returnType; + List<JCTypeParameter> typeParams = List.nil(); + List<JCExpression> thrownExceptions = List.nil(); + + boolean addCleaning = false; + + if (!(tdParent.get() instanceof JCClassDecl)) { + annotationNode.addError("@SuperBuilder is only supported on types."); + return; + } + + // Gather all fields of the class that should be set by the builder. + JCClassDecl td = (JCClassDecl) tdParent.get(); + ListBuffer<JavacNode> allFields = new ListBuffer<JavacNode>(); + boolean valuePresent = (hasAnnotation(lombok.Value.class, tdParent) || hasAnnotation("lombok.experimental.Value", tdParent)); + for (JavacNode fieldNode : HandleConstructor.findAllFields(tdParent, true)) { + JCVariableDecl fd = (JCVariableDecl) fieldNode.get(); + JavacNode isDefault = findAnnotation(Builder.Default.class, fieldNode, true); + boolean isFinal = (fd.mods.flags & Flags.FINAL) != 0 || (valuePresent && !hasAnnotation(NonFinal.class, fieldNode)); + BuilderFieldData bfd = new BuilderFieldData(); + bfd.rawName = fd.name; + bfd.name = removePrefixFromField(fieldNode); + bfd.type = fd.vartype; + bfd.singularData = getSingularData(fieldNode); + bfd.originalFieldNode = fieldNode; + + if (bfd.singularData != null && isDefault != null) { + isDefault.addError("@Builder.Default and @Singular cannot be mixed."); + isDefault = null; + } + + if (fd.init == null && isDefault != null) { + isDefault.addWarning("@Builder.Default requires an initializing expression (' = something;')."); + isDefault = null; + } + + if (fd.init != null && isDefault == null) { + if (isFinal) continue; + 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."); + } + + if (isDefault != null) { + bfd.nameOfDefaultProvider = tdParent.toName("$default$" + bfd.name); + bfd.nameOfSetFlag = tdParent.toName(bfd.name + "$set"); + JCMethodDecl md = generateDefaultProvider(bfd.nameOfDefaultProvider, fieldNode, td.typarams); + recursiveSetGeneratedBy(md, ast, annotationNode.getContext()); + if (md != null) injectMethod(tdParent, md); + } + addObtainVia(bfd, fieldNode); + builderFields.add(bfd); + allFields.append(fieldNode); + } + + // Set the default names of the builder classes if not customized via annotation. + if (builderClassName.isEmpty()) builderClassName = td.name.toString() + "Builder"; + String builderImplClassName = builderClassName + "Impl"; + JCTree extendsClause = Javac.getExtendsClause(td); + if (superclassBuilderClassName.isEmpty() && extendsClause != null) { + superclassBuilderClassName = extendsClause + "Builder"; + } + + boolean useInheritanceOnBuilder = extendsClause != null && inherit; + generateBuilderBasedConstructor(tdParent, builderFields, annotationNode, builderClassName, useInheritanceOnBuilder); + + returnType = namePlusTypeParamsToTypeReference(tdParent.getTreeMaker(), td.name, td.typarams); + typeParams = td.typarams; + thrownExceptions = List.nil(); + + // Create the abstract builder class. + JavacNode builderType = findInnerClass(tdParent, builderClassName); + if (builderType == null) { + builderType = makeBuilderClass(true, true, annotationNode, tdParent, builderClassName, useInheritanceOnBuilder ? superclassBuilderClassName : null, typeParams, ast); + } else { + annotationNode.addError("@SuperBuilder does not support customized builders. Use @Builder instead."); + } + + // Create the builder implementation class. + JavacNode builderImplType = findInnerClass(tdParent, builderImplClassName); + if (builderImplType == null) { + builderImplType = makeBuilderClass(false, false, annotationNode, tdParent, builderImplClassName, builderClassName, typeParams, ast); + } else { + annotationNode.addError("@SuperBuilder does not support customized builders. Use @Builder instead."); + } + + // Check that all builder fields for @Singular and @ObtainVia. + for (BuilderFieldData bfd : builderFields) { + if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) { + if (bfd.singularData.getSingularizer().requiresCleaning()) { + addCleaning = true; + break; + } + } + if (bfd.obtainVia != null) { + if (bfd.obtainVia.field().isEmpty() == bfd.obtainVia.method().isEmpty()) { + bfd.obtainViaNode.addError("The syntax is either @ObtainVia(field = \"fieldName\") or @ObtainVia(method = \"methodName\")."); + return; + } + if (bfd.obtainVia.method().isEmpty() && bfd.obtainVia.isStatic()) { + bfd.obtainViaNode.addError("@ObtainVia(isStatic = true) is not valid unless 'method' has been set."); + return; + } + } + } + + // Generate the fields in the builder class that hold the values for the instance. + generateBuilderFields(builderType, builderFields, ast); + if (addCleaning) { + JavacTreeMaker maker = builderType.getTreeMaker(); + JCVariableDecl uncleanField = maker.VarDef(maker.Modifiers(Flags.PRIVATE), builderType.toName("$lombokUnclean"), maker.TypeIdent(CTC_BOOLEAN), null); + injectFieldAndMarkGenerated(builderType, uncleanField); + } + + // Create a simple constructor for the builder class. + JCMethodDecl cd = HandleConstructor.createConstructor(AccessLevel.PRIVATE, List.<JCAnnotation>nil(), builderImplType, List.<JavacNode>nil(), false, annotationNode); + if (cd != null) injectMethod(builderImplType, cd); + + // Create the setter methods in the abstract builder. + for (BuilderFieldData bfd : builderFields) { + makeSetterMethodsForBuilder(builderType, bfd, annotationNode); + } + + // Create the build() method in the BuilderImpl. + if (methodExists(buildMethodName, builderType, -1) == MemberExistsResult.NOT_EXISTS) { + JCMethodDecl md = generateBuildMethod(tdParent, buildMethodName, returnType, builderImplType, thrownExceptions, ast); + if (md != null) injectMethod(builderImplType, md); + } + + // Create the toString() method for the abstract builder. + if (methodExists("toString", builderType, 0) == MemberExistsResult.NOT_EXISTS) { + java.util.List<JavacNode> fieldNodes = new ArrayList<JavacNode>(); + for (BuilderFieldData bfd : builderFields) { + fieldNodes.addAll(bfd.createdFields); + } + JCMethodDecl md = HandleToString.createToString(builderType, fieldNodes, true, false, FieldAccess.ALWAYS_FIELD, ast); + if (md != null) injectMethod(builderType, md); + } + + if (addCleaning) injectMethod(builderType, generateCleanMethod(builderFields, builderType, ast)); + + // Add the builder() method to the annotated class. + if (methodExists(builderMethodName, tdParent, -1) == MemberExistsResult.NOT_EXISTS) { + JCMethodDecl md = generateBuilderMethod(builderMethodName, builderClassName, builderImplClassName, annotationNode, tdParent, typeParams); + recursiveSetGeneratedBy(md, ast, annotationNode.getContext()); + if (md != null) injectMethod(tdParent, md); + } + + if (toBuilder) { + switch (methodExists(toBuilderMethodName, tdParent, 0)) { + case EXISTS_BY_USER: + annotationNode.addWarning("Not generating toBuilder() as it already exists."); + return; + case NOT_EXISTS: + List<JCTypeParameter> tps = typeParams; + JCMethodDecl md = generateToBuilderMethod(toBuilderMethodName, builderClassName, tdParent, tps, builderFields, ast); + if (md != null) injectMethod(tdParent, md); + } + } + + recursiveSetGeneratedBy(builderType.get(), ast, annotationNode.getContext()); + recursiveSetGeneratedBy(builderImplType.get(), ast, annotationNode.getContext()); + } + +// private static String unpack(JCExpression expr) { +// StringBuilder sb = new StringBuilder(); +// unpack(sb, expr); +// return sb.toString(); +// } + +// private static void unpack(StringBuilder sb, JCExpression expr) { +// if (expr instanceof JCIdent) { +// sb.append(((JCIdent) expr).name.toString()); +// return; +// } +// +// if (expr instanceof JCFieldAccess) { +// JCFieldAccess jcfa = (JCFieldAccess) expr; +// unpack(sb, jcfa.selected); +// sb.append(".").append(jcfa.name.toString()); +// return; +// } +// +// if (expr instanceof JCTypeApply) { +// sb.setLength(0); +// sb.append("ERR:"); +// sb.append("@Builder(toBuilder=true) is not supported if returning a type with generics applied to an intermediate."); +// sb.append("__ERR__"); +// return; +// } +// +// sb.setLength(0); +// sb.append("ERR:"); +// sb.append("Expected a type of some sort, not a " + expr.getClass().getName()); +// sb.append("__ERR__"); +// } + + + /** + * Generates a constructor that has a builder as the only parameter. + * The values from the builder are used to initialize the fields of new instances. + * + * @param typeNode + * the type (with the {@code @Builder} annotation) for which a + * constructor should be generated. + * @param builderFields a list of fields in the builder which should be assigned to new instances. + * @param source the annotation (used for setting source code locations for the generated code). + * @param callBuilderBasedSuperConstructor + * If {@code true}, the constructor will explicitly call a super + * constructor with the builder as argument. Requires + * {@code builderClassAsParameter != null}. + */ + private void generateBuilderBasedConstructor(JavacNode typeNode, java.util.List<BuilderFieldData> builderFields, JavacNode source, String builderClassName, boolean callBuilderBasedSuperConstructor) { + JavacTreeMaker maker = typeNode.getTreeMaker(); + + AccessLevel level = AccessLevel.PROTECTED; + boolean isEnum = (((JCClassDecl) typeNode.get()).mods.flags & Flags.ENUM) != 0; + if (isEnum) { + level = AccessLevel.PRIVATE; + } + + ListBuffer<JCStatement> nullChecks = new ListBuffer<JCStatement>(); + ListBuffer<JCStatement> statements = new ListBuffer<JCStatement>(); + + Name builderVariableName = typeNode.toName("b"); + for (BuilderFieldData bfd : builderFields) { + List<JCAnnotation> nonNulls = findAnnotations(bfd.originalFieldNode, NON_NULL_PATTERN); + if (!nonNulls.isEmpty()) { + JCStatement nullCheck = generateNullCheck(maker, bfd.originalFieldNode, source); + if (nullCheck != null) { + nullChecks.append(nullCheck); + } + } + + JCExpression rhs; + if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) { + bfd.singularData.getSingularizer().appendBuildCode(bfd.singularData, bfd.originalFieldNode, bfd.type, statements, bfd.name); + rhs = maker.Ident(bfd.singularData.getPluralName()); + } else { + rhs = maker.Select(maker.Ident(builderVariableName), bfd.rawName); + } + JCFieldAccess thisX = maker.Select(maker.Ident(bfd.originalFieldNode.toName("this")), bfd.rawName); + + JCExpression assign = maker.Assign(thisX, rhs); + + statements.append(maker.Exec(assign)); + } + + JCModifiers mods = maker.Modifiers(toJavacModifier(level), List.<JCAnnotation>nil()); + + // Create a constructor that has just the builder as parameter. + ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); + long flags = JavacHandlerUtil.addFinalIfNeeded(Flags.PARAMETER, typeNode.getContext()); + Name builderClassname = typeNode.toName(builderClassName); + JCVariableDecl param = maker.VarDef(maker.Modifiers(flags), builderVariableName, maker.Ident(builderClassname), null); + params.append(param); + + if (callBuilderBasedSuperConstructor) { + // The first statement must be the call to the super constructor. + JCMethodInvocation callToSuperConstructor = maker.Apply(List.<JCExpression>nil(), + maker.Ident(typeNode.toName("super")), + List.<JCExpression>of(maker.Ident(builderVariableName))); + statements.prepend(maker.Exec(callToSuperConstructor)); + } + + JCMethodDecl constr = recursiveSetGeneratedBy(maker.MethodDef(mods, typeNode.toName("<init>"), + null, List.<JCTypeParameter>nil(), params.toList(), List.<JCExpression>nil(), + maker.Block(0L, nullChecks.appendList(statements).toList()), null), source.get(), typeNode.getContext()); + + injectMethod(typeNode, constr, null, Javac.createVoidType(typeNode.getSymbolTable(), CTC_VOID)); + } + + private JCMethodDecl generateToBuilderMethod(String toBuilderMethodName, String builderClassName, JavacNode type, List<JCTypeParameter> typeParams, java.util.List<BuilderFieldData> builderFields, JCAnnotation ast) { + // return new ThingieBuilder<A, B>().setA(this.a).setB(this.b); + 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(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; + } +} |