diff options
Diffstat (limited to 'src/core/lombok/javac/handlers/JavacSingularsRecipes.java')
| -rw-r--r-- | src/core/lombok/javac/handlers/JavacSingularsRecipes.java | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/core/lombok/javac/handlers/JavacSingularsRecipes.java b/src/core/lombok/javac/handlers/JavacSingularsRecipes.java index 6a8a8f7c..f1804ac8 100644 --- a/src/core/lombok/javac/handlers/JavacSingularsRecipes.java +++ b/src/core/lombok/javac/handlers/JavacSingularsRecipes.java @@ -21,6 +21,8 @@ */ package lombok.javac.handlers; +import static lombok.javac.handlers.JavacHandlerUtil.*; + import java.io.IOException; import java.util.HashMap; import java.util.Map; @@ -29,10 +31,15 @@ import lombok.core.LombokImmutableList; import lombok.core.SpiLoadUtil; import lombok.core.TypeLibrary; import lombok.javac.JavacNode; +import lombok.javac.JavacTreeMaker; +import com.sun.source.tree.Tree.Kind; +import com.sun.tools.javac.code.BoundKind; import com.sun.tools.javac.tree.JCTree; import com.sun.tools.javac.tree.JCTree.JCExpression; import com.sun.tools.javac.tree.JCTree.JCStatement; +import com.sun.tools.javac.tree.JCTree.JCWildcard; +import com.sun.tools.javac.util.Context; import com.sun.tools.javac.util.List; import com.sun.tools.javac.util.ListBuffer; import com.sun.tools.javac.util.Name; @@ -138,5 +145,70 @@ public class JavacSingularsRecipes { public void appendCleaningCode(SingularData data, JavacNode builderType, JCTree source, ListBuffer<JCStatement> statements) { } + + // -- Utility methods -- + + /** + * Adds the requested number of type arguments to the provided type, copying each argument in {@code typeArgs}. If typeArgs is too long, the extra elements are ignored. + * If {@code typeArgs} is null or too short, {@code java.lang.Object} will be substituted for each missing type argument. + * + * @param count The number of type arguments requested. + * @param addExtends If {@code true}, all bounds are either '? extends X' or just '?'. If false, the reverse is applied, and '? extends Foo' is converted to Foo, '?' to Object, etc. + * @param node Some node in the same AST. Just used to obtain makers and contexts and such. + * @param type The type to add generics to. + * @param typeArgs the list of type args to clone. + * @param source The source annotation that is the root cause of this code generation. + */ + protected JCExpression addTypeArgs(int count, boolean addExtends, JavacNode node, JCExpression type, List<JCExpression> typeArgs, JCTree source) { + JavacTreeMaker maker = node.getTreeMaker(); + Context context = node.getContext(); + + if (count < 0) throw new IllegalArgumentException("count is negative"); + if (count == 0) return type; + ListBuffer<JCExpression> arguments = new ListBuffer<JCExpression>(); + + if (typeArgs != null) for (JCExpression orig : typeArgs) { + if (!addExtends) { + if (orig.getKind() == Kind.UNBOUNDED_WILDCARD || orig.getKind() == Kind.SUPER_WILDCARD) { + arguments.append(chainDots(node, "java", "lang", "Object")); + } else if (orig.getKind() == Kind.EXTENDS_WILDCARD) { + JCExpression inner; + try { + inner = (JCExpression) ((JCWildcard) orig).inner; + } catch (Exception e) { + inner = chainDots(node, "java", "lang", "Object"); + } + arguments.append(cloneType(maker, inner, source, context)); + } else { + arguments.append(cloneType(maker, orig, source, context)); + } + } else { + if (orig.getKind() == Kind.UNBOUNDED_WILDCARD || orig.getKind() == Kind.SUPER_WILDCARD) { + arguments.append(maker.Wildcard(maker.TypeBoundKind(BoundKind.UNBOUND), null)); + } else if (orig.getKind() == Kind.EXTENDS_WILDCARD) { + arguments.append(cloneType(maker, orig, source, context)); + } else { + arguments.append(maker.Wildcard(maker.TypeBoundKind(BoundKind.EXTENDS), cloneType(maker, orig, source, context))); + } + } + if (--count == 0) break; + } + + while (count-- > 0) { + if (addExtends) { + arguments.append(maker.Wildcard(maker.TypeBoundKind(BoundKind.UNBOUND), null)); + } else { + arguments.append(chainDots(node, "java", "lang", "Object")); + } + } + return maker.TypeApply(type, arguments.toList()); + } + + /** Generates 'this.<em>name</em>.size()' as an expression. */ + protected JCExpression getSize(JavacTreeMaker maker, JavacNode builderType, Name name) { + JCExpression fn = maker.Select(maker.Select(maker.Ident(builderType.toName("this")), name), builderType.toName("size")); + return maker.Apply(List.<JCExpression>nil(), fn, List.<JCExpression>nil()); + } + } } |