| /* |
| * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package com.sun.tools.javac.util; |
| |
| import java.nio.file.Path; |
| import java.util.EnumMap; |
| import java.util.EnumSet; |
| import java.util.HashMap; |
| import java.util.LinkedHashMap; |
| import java.util.Locale; |
| import java.util.Map; |
| |
| import com.sun.tools.javac.code.Printer; |
| import com.sun.tools.javac.code.Symbol; |
| import com.sun.tools.javac.code.Symbol.*; |
| import com.sun.tools.javac.code.Symtab; |
| import com.sun.tools.javac.code.Type; |
| import com.sun.tools.javac.code.Type.*; |
| import com.sun.tools.javac.code.Types; |
| |
| import static com.sun.tools.javac.code.Flags.*; |
| import static com.sun.tools.javac.code.TypeTag.*; |
| import static com.sun.tools.javac.code.Kinds.*; |
| import static com.sun.tools.javac.code.Kinds.Kind.*; |
| import static com.sun.tools.javac.util.LayoutCharacters.*; |
| import static com.sun.tools.javac.util.RichDiagnosticFormatter.RichConfiguration.*; |
| |
| /** |
| * A rich diagnostic formatter is a formatter that provides better integration |
| * with javac's type system. A diagostic is first preprocessed in order to keep |
| * track of each types/symbols in it; after these informations are collected, |
| * the diagnostic is rendered using a standard formatter, whose type/symbol printer |
| * has been replaced by a more refined version provided by this rich formatter. |
| * The rich formatter currently enables three different features: (i) simple class |
| * names - that is class names are displayed used a non qualified name (thus |
| * omitting package info) whenever possible - (ii) where clause list - a list of |
| * additional subdiagnostics that provide specific info about type-variables, |
| * captured types, intersection types that occur in the diagnostic that is to be |
| * formatted and (iii) type-variable disambiguation - when the diagnostic refers |
| * to two different type-variables with the same name, their representation is |
| * disambiguated by appending an index to the type variable name. |
| * |
| * <p><b>This is NOT part of any supported API. |
| * If you write code that depends on this, you do so at your own risk. |
| * This code and its internal interfaces are subject to change or |
| * deletion without notice.</b> |
| */ |
| public class RichDiagnosticFormatter extends |
| ForwardingDiagnosticFormatter<JCDiagnostic, AbstractDiagnosticFormatter> { |
| |
| final Symtab syms; |
| final Types types; |
| final JCDiagnostic.Factory diags; |
| final JavacMessages messages; |
| |
| /* name simplifier used by this formatter */ |
| protected ClassNameSimplifier nameSimplifier; |
| |
| /* type/symbol printer used by this formatter */ |
| private RichPrinter printer; |
| |
| /* map for keeping track of a where clause associated to a given type */ |
| Map<WhereClauseKind, Map<Type, JCDiagnostic>> whereClauses; |
| |
| /** Get the DiagnosticFormatter instance for this context. */ |
| public static RichDiagnosticFormatter instance(Context context) { |
| RichDiagnosticFormatter instance = context.get(RichDiagnosticFormatter.class); |
| if (instance == null) |
| instance = new RichDiagnosticFormatter(context); |
| return instance; |
| } |
| |
| protected RichDiagnosticFormatter(Context context) { |
| super((AbstractDiagnosticFormatter)Log.instance(context).getDiagnosticFormatter()); |
| setRichPrinter(new RichPrinter()); |
| this.syms = Symtab.instance(context); |
| this.diags = JCDiagnostic.Factory.instance(context); |
| this.types = Types.instance(context); |
| this.messages = JavacMessages.instance(context); |
| whereClauses = new EnumMap<>(WhereClauseKind.class); |
| configuration = new RichConfiguration(Options.instance(context), formatter); |
| for (WhereClauseKind kind : WhereClauseKind.values()) |
| whereClauses.put(kind, new LinkedHashMap<Type, JCDiagnostic>()); |
| } |
| |
| @Override |
| public String format(JCDiagnostic diag, Locale l) { |
| StringBuilder sb = new StringBuilder(); |
| nameSimplifier = new ClassNameSimplifier(); |
| for (WhereClauseKind kind : WhereClauseKind.values()) |
| whereClauses.get(kind).clear(); |
| preprocessDiagnostic(diag); |
| sb.append(formatter.format(diag, l)); |
| if (getConfiguration().isEnabled(RichFormatterFeature.WHERE_CLAUSES)) { |
| List<JCDiagnostic> clauses = getWhereClauses(); |
| String indent = formatter.isRaw() ? "" : |
| formatter.indentString(DetailsInc); |
| for (JCDiagnostic d : clauses) { |
| String whereClause = formatter.format(d, l); |
| if (whereClause.length() > 0) { |
| sb.append('\n' + indent + whereClause); |
| } |
| } |
| } |
| return sb.toString(); |
| } |
| |
| @Override |
| public String formatMessage(JCDiagnostic diag, Locale l) { |
| nameSimplifier = new ClassNameSimplifier(); |
| preprocessDiagnostic(diag); |
| return super.formatMessage(diag, l); |
| } |
| |
| /** |
| * Sets the type/symbol printer used by this formatter. |
| * @param printer the rich printer to be set |
| */ |
| protected void setRichPrinter(RichPrinter printer) { |
| this.printer = printer; |
| formatter.setPrinter(printer); |
| } |
| |
| /** |
| * Returns the type/symbol printer used by this formatter. |
| * @return type/symbol rich printer |
| */ |
| protected RichPrinter getRichPrinter() { |
| return printer; |
| } |
| |
| /** |
| * Preprocess a given diagnostic by looking both into its arguments and into |
| * its subdiagnostics (if any). This preprocessing is responsible for |
| * generating info corresponding to features like where clauses, name |
| * simplification, etc. |
| * |
| * @param diag the diagnostic to be preprocessed |
| */ |
| protected void preprocessDiagnostic(JCDiagnostic diag) { |
| for (Object o : diag.getArgs()) { |
| if (o != null) { |
| preprocessArgument(o); |
| } |
| } |
| if (diag.isMultiline()) { |
| for (JCDiagnostic d : diag.getSubdiagnostics()) |
| preprocessDiagnostic(d); |
| } |
| } |
| |
| /** |
| * Preprocess a diagnostic argument. A type/symbol argument is |
| * preprocessed by specialized type/symbol preprocessors. |
| * |
| * @param arg the argument to be translated |
| */ |
| protected void preprocessArgument(Object arg) { |
| if (arg instanceof Type) { |
| preprocessType((Type)arg); |
| } |
| else if (arg instanceof Symbol) { |
| preprocessSymbol((Symbol)arg); |
| } |
| else if (arg instanceof JCDiagnostic) { |
| preprocessDiagnostic((JCDiagnostic)arg); |
| } |
| else if (arg instanceof Iterable<?> && !(arg instanceof Path)) { |
| for (Object o : (Iterable<?>)arg) { |
| preprocessArgument(o); |
| } |
| } |
| } |
| |
| /** |
| * Build a list of multiline diagnostics containing detailed info about |
| * type-variables, captured types, and intersection types |
| * |
| * @return where clause list |
| */ |
| protected List<JCDiagnostic> getWhereClauses() { |
| List<JCDiagnostic> clauses = List.nil(); |
| for (WhereClauseKind kind : WhereClauseKind.values()) { |
| List<JCDiagnostic> lines = List.nil(); |
| for (Map.Entry<Type, JCDiagnostic> entry : whereClauses.get(kind).entrySet()) { |
| lines = lines.prepend(entry.getValue()); |
| } |
| if (!lines.isEmpty()) { |
| String key = kind.key(); |
| if (lines.size() > 1) |
| key += ".1"; |
| JCDiagnostic d = diags.fragment(key, whereClauses.get(kind).keySet()); |
| d = new JCDiagnostic.MultilineDiagnostic(d, lines.reverse()); |
| clauses = clauses.prepend(d); |
| } |
| } |
| return clauses.reverse(); |
| } |
| |
| private int indexOf(Type type, WhereClauseKind kind) { |
| int index = 1; |
| for (Type t : whereClauses.get(kind).keySet()) { |
| if (t.tsym == type.tsym) { |
| return index; |
| } |
| if (kind != WhereClauseKind.TYPEVAR || |
| t.toString().equals(type.toString())) { |
| index++; |
| } |
| } |
| return -1; |
| } |
| |
| private boolean unique(TypeVar typevar) { |
| typevar = (TypeVar)typevar.stripMetadataIfNeeded(); |
| |
| int found = 0; |
| for (Type t : whereClauses.get(WhereClauseKind.TYPEVAR).keySet()) { |
| if (t.toString().equals(typevar.toString())) { |
| found++; |
| } |
| } |
| if (found < 1) |
| throw new AssertionError("Missing type variable in where clause " + typevar); |
| return found == 1; |
| } |
| //where |
| /** |
| * This enum defines all posssible kinds of where clauses that can be |
| * attached by a rich diagnostic formatter to a given diagnostic |
| */ |
| enum WhereClauseKind { |
| |
| /** where clause regarding a type variable */ |
| TYPEVAR("where.description.typevar"), |
| /** where clause regarding a captured type */ |
| CAPTURED("where.description.captured"), |
| /** where clause regarding an intersection type */ |
| INTERSECTION("where.description.intersection"); |
| |
| /** resource key for this where clause kind */ |
| private final String key; |
| |
| WhereClauseKind(String key) { |
| this.key = key; |
| } |
| |
| String key() { |
| return key; |
| } |
| } |
| |
| // <editor-fold defaultstate="collapsed" desc="name simplifier"> |
| /** |
| * A name simplifier keeps track of class names usages in order to determine |
| * whether a class name can be compacted or not. Short names are not used |
| * if a conflict is detected, e.g. when two classes with the same simple |
| * name belong to different packages - in this case the formatter reverts |
| * to fullnames as compact names might lead to a confusing diagnostic. |
| */ |
| protected class ClassNameSimplifier { |
| |
| /* table for keeping track of all short name usages */ |
| Map<Name, List<Symbol>> nameClashes = new HashMap<>(); |
| |
| /** |
| * Add a name usage to the simplifier's internal cache |
| */ |
| protected void addUsage(Symbol sym) { |
| Name n = sym.getSimpleName(); |
| List<Symbol> conflicts = nameClashes.get(n); |
| if (conflicts == null) { |
| conflicts = List.nil(); |
| } |
| if (!conflicts.contains(sym)) |
| nameClashes.put(n, conflicts.append(sym)); |
| } |
| |
| public String simplify(Symbol s) { |
| String name = s.getQualifiedName().toString(); |
| if (!s.type.isCompound() && !s.type.isPrimitive()) { |
| List<Symbol> conflicts = nameClashes.get(s.getSimpleName()); |
| if (conflicts == null || |
| (conflicts.size() == 1 && |
| conflicts.contains(s))) { |
| List<Name> l = List.nil(); |
| Symbol s2 = s; |
| while (s2.type.hasTag(CLASS) && |
| s2.type.getEnclosingType().hasTag(CLASS) && |
| s2.owner.kind == TYP) { |
| l = l.prepend(s2.getSimpleName()); |
| s2 = s2.owner; |
| } |
| l = l.prepend(s2.getSimpleName()); |
| StringBuilder buf = new StringBuilder(); |
| String sep = ""; |
| for (Name n2 : l) { |
| buf.append(sep); |
| buf.append(n2); |
| sep = "."; |
| } |
| name = buf.toString(); |
| } |
| } |
| return name; |
| } |
| } |
| // </editor-fold> |
| |
| // <editor-fold defaultstate="collapsed" desc="rich printer"> |
| /** |
| * Enhanced type/symbol printer that provides support for features like simple names |
| * and type variable disambiguation. This enriched printer exploits the info |
| * discovered during type/symbol preprocessing. This printer is set on the delegate |
| * formatter so that rich type/symbol info can be properly rendered. |
| */ |
| protected class RichPrinter extends Printer { |
| |
| @Override |
| public String localize(Locale locale, String key, Object... args) { |
| return formatter.localize(locale, key, args); |
| } |
| |
| @Override |
| public String capturedVarId(CapturedType t, Locale locale) { |
| return indexOf(t, WhereClauseKind.CAPTURED) + ""; |
| } |
| |
| @Override |
| public String visitType(Type t, Locale locale) { |
| String s = super.visitType(t, locale); |
| if (t == syms.botType) |
| s = localize(locale, "compiler.misc.type.null"); |
| return s; |
| } |
| |
| @Override |
| public String visitCapturedType(CapturedType t, Locale locale) { |
| if (getConfiguration().isEnabled(RichFormatterFeature.WHERE_CLAUSES)) { |
| return localize(locale, |
| "compiler.misc.captured.type", |
| indexOf(t, WhereClauseKind.CAPTURED)); |
| } |
| else |
| return super.visitCapturedType(t, locale); |
| } |
| |
| @Override |
| public String visitClassType(ClassType t, Locale locale) { |
| if (t.isCompound() && |
| getConfiguration().isEnabled(RichFormatterFeature.WHERE_CLAUSES)) { |
| return localize(locale, |
| "compiler.misc.intersection.type", |
| indexOf(t, WhereClauseKind.INTERSECTION)); |
| } |
| else |
| return super.visitClassType(t, locale); |
| } |
| |
| @Override |
| protected String className(ClassType t, boolean longform, Locale locale) { |
| Symbol sym = t.tsym; |
| if (sym.name.length() == 0 || |
| !getConfiguration().isEnabled(RichFormatterFeature.SIMPLE_NAMES)) { |
| return super.className(t, longform, locale); |
| } |
| else if (longform) |
| return nameSimplifier.simplify(sym).toString(); |
| else |
| return sym.name.toString(); |
| } |
| |
| @Override |
| public String visitTypeVar(TypeVar t, Locale locale) { |
| if (unique(t) || |
| !getConfiguration().isEnabled(RichFormatterFeature.UNIQUE_TYPEVAR_NAMES)) { |
| return t.toString(); |
| } |
| else { |
| return localize(locale, |
| "compiler.misc.type.var", |
| t.toString(), indexOf(t, WhereClauseKind.TYPEVAR)); |
| } |
| } |
| |
| @Override |
| public String visitClassSymbol(ClassSymbol s, Locale locale) { |
| if (s.type.isCompound()) { |
| return visit(s.type, locale); |
| } |
| String name = nameSimplifier.simplify(s); |
| if (name.length() == 0 || |
| !getConfiguration().isEnabled(RichFormatterFeature.SIMPLE_NAMES)) { |
| return super.visitClassSymbol(s, locale); |
| } |
| else { |
| return name; |
| } |
| } |
| |
| @Override |
| public String visitMethodSymbol(MethodSymbol s, Locale locale) { |
| String ownerName = visit(s.owner, locale); |
| if (s.isStaticOrInstanceInit()) { |
| return ownerName; |
| } else { |
| String ms = (s.name == s.name.table.names.init) |
| ? ownerName |
| : s.name.toString(); |
| if (s.type != null) { |
| if (s.type.hasTag(FORALL)) { |
| ms = "<" + visitTypes(s.type.getTypeArguments(), locale) + ">" + ms; |
| } |
| ms += "(" + printMethodArgs( |
| s.type.getParameterTypes(), |
| (s.flags() & VARARGS) != 0, |
| locale) + ")"; |
| } |
| return ms; |
| } |
| } |
| } |
| // </editor-fold> |
| |
| // <editor-fold defaultstate="collapsed" desc="type scanner"> |
| /** |
| * Preprocess a given type looking for (i) additional info (where clauses) to be |
| * added to the main diagnostic (ii) names to be compacted. |
| */ |
| protected void preprocessType(Type t) { |
| typePreprocessor.visit(t); |
| } |
| //where |
| protected Types.UnaryVisitor<Void> typePreprocessor = |
| new Types.UnaryVisitor<Void>() { |
| |
| public Void visit(List<Type> ts) { |
| for (Type t : ts) |
| visit(t); |
| return null; |
| } |
| |
| @Override |
| public Void visitForAll(ForAll t, Void ignored) { |
| visit(t.tvars); |
| visit(t.qtype); |
| return null; |
| } |
| |
| @Override |
| public Void visitMethodType(MethodType t, Void ignored) { |
| visit(t.argtypes); |
| visit(t.restype); |
| return null; |
| } |
| |
| @Override |
| public Void visitErrorType(ErrorType t, Void ignored) { |
| Type ot = t.getOriginalType(); |
| if (ot != null) |
| visit(ot); |
| return null; |
| } |
| |
| @Override |
| public Void visitArrayType(ArrayType t, Void ignored) { |
| visit(t.elemtype); |
| return null; |
| } |
| |
| @Override |
| public Void visitWildcardType(WildcardType t, Void ignored) { |
| visit(t.type); |
| return null; |
| } |
| |
| public Void visitType(Type t, Void ignored) { |
| return null; |
| } |
| |
| @Override |
| public Void visitCapturedType(CapturedType t, Void ignored) { |
| if (indexOf(t, WhereClauseKind.CAPTURED) == -1) { |
| String suffix = t.lower == syms.botType ? ".1" : ""; |
| JCDiagnostic d = diags.fragment("where.captured"+ suffix, t, t.bound, t.lower, t.wildcard); |
| whereClauses.get(WhereClauseKind.CAPTURED).put(t, d); |
| visit(t.wildcard); |
| visit(t.lower); |
| visit(t.bound); |
| } |
| return null; |
| } |
| |
| @Override |
| public Void visitClassType(ClassType t, Void ignored) { |
| if (t.isCompound()) { |
| if (indexOf(t, WhereClauseKind.INTERSECTION) == -1) { |
| Type supertype = types.supertype(t); |
| List<Type> interfaces = types.interfaces(t); |
| JCDiagnostic d = diags.fragment("where.intersection", t, interfaces.prepend(supertype)); |
| whereClauses.get(WhereClauseKind.INTERSECTION).put(t, d); |
| visit(supertype); |
| visit(interfaces); |
| } |
| } else if (t.tsym.name.isEmpty()) { |
| //anon class |
| ClassType norm = (ClassType) t.tsym.type; |
| if (norm != null) { |
| if (norm.interfaces_field != null && norm.interfaces_field.nonEmpty()) { |
| visit(norm.interfaces_field.head); |
| } else { |
| visit(norm.supertype_field); |
| } |
| } |
| } |
| nameSimplifier.addUsage(t.tsym); |
| visit(t.getTypeArguments()); |
| if (t.getEnclosingType() != Type.noType) |
| visit(t.getEnclosingType()); |
| return null; |
| } |
| |
| @Override |
| public Void visitTypeVar(TypeVar t, Void ignored) { |
| t = (TypeVar)t.stripMetadataIfNeeded(); |
| if (indexOf(t, WhereClauseKind.TYPEVAR) == -1) { |
| //access the bound type and skip error types |
| Type bound = t.bound; |
| while ((bound instanceof ErrorType)) |
| bound = ((ErrorType)bound).getOriginalType(); |
| //retrieve the bound list - if the type variable |
| //has not been attributed the bound is not set |
| List<Type> bounds = (bound != null) && |
| (bound.hasTag(CLASS) || bound.hasTag(TYPEVAR)) ? |
| types.getBounds(t) : |
| List.<Type>nil(); |
| |
| nameSimplifier.addUsage(t.tsym); |
| |
| boolean boundErroneous = bounds.head == null || |
| bounds.head.hasTag(NONE) || |
| bounds.head.hasTag(ERROR); |
| |
| if ((t.tsym.flags() & SYNTHETIC) == 0) { |
| //this is a true typevar |
| JCDiagnostic d = diags.fragment("where.typevar" + |
| (boundErroneous ? ".1" : ""), t, bounds, |
| kindName(t.tsym.location()), t.tsym.location()); |
| whereClauses.get(WhereClauseKind.TYPEVAR).put(t, d); |
| symbolPreprocessor.visit(t.tsym.location(), null); |
| visit(bounds); |
| } else { |
| Assert.check(!boundErroneous); |
| //this is a fresh (synthetic) tvar |
| JCDiagnostic d = diags.fragment("where.fresh.typevar", t, bounds); |
| whereClauses.get(WhereClauseKind.TYPEVAR).put(t, d); |
| visit(bounds); |
| } |
| |
| } |
| return null; |
| } |
| }; |
| // </editor-fold> |
| |
| // <editor-fold defaultstate="collapsed" desc="symbol scanner"> |
| /** |
| * Preprocess a given symbol looking for (i) additional info (where clauses) to be |
| * added to the main diagnostic (ii) names to be compacted |
| */ |
| protected void preprocessSymbol(Symbol s) { |
| symbolPreprocessor.visit(s, null); |
| } |
| //where |
| protected Types.DefaultSymbolVisitor<Void, Void> symbolPreprocessor = |
| new Types.DefaultSymbolVisitor<Void, Void>() { |
| |
| @Override |
| public Void visitClassSymbol(ClassSymbol s, Void ignored) { |
| if (s.type.isCompound()) { |
| typePreprocessor.visit(s.type); |
| } else { |
| nameSimplifier.addUsage(s); |
| } |
| return null; |
| } |
| |
| @Override |
| public Void visitSymbol(Symbol s, Void ignored) { |
| return null; |
| } |
| |
| @Override |
| public Void visitMethodSymbol(MethodSymbol s, Void ignored) { |
| visit(s.owner, null); |
| if (s.type != null) |
| typePreprocessor.visit(s.type); |
| return null; |
| } |
| }; |
| // </editor-fold> |
| |
| @Override |
| public RichConfiguration getConfiguration() { |
| //the following cast is always safe - see init |
| return (RichConfiguration)configuration; |
| } |
| |
| /** |
| * Configuration object provided by the rich formatter. |
| */ |
| public static class RichConfiguration extends ForwardingDiagnosticFormatter.ForwardingConfiguration { |
| |
| /** set of enabled rich formatter's features */ |
| protected java.util.EnumSet<RichFormatterFeature> features; |
| |
| @SuppressWarnings("fallthrough") |
| public RichConfiguration(Options options, AbstractDiagnosticFormatter formatter) { |
| super(formatter.getConfiguration()); |
| features = formatter.isRaw() ? EnumSet.noneOf(RichFormatterFeature.class) : |
| EnumSet.of(RichFormatterFeature.SIMPLE_NAMES, |
| RichFormatterFeature.WHERE_CLAUSES, |
| RichFormatterFeature.UNIQUE_TYPEVAR_NAMES); |
| String diagOpts = options.get("diags"); |
| if (diagOpts != null) { |
| for (String args: diagOpts.split(",")) { |
| if (args.equals("-where")) { |
| features.remove(RichFormatterFeature.WHERE_CLAUSES); |
| } |
| else if (args.equals("where")) { |
| features.add(RichFormatterFeature.WHERE_CLAUSES); |
| } |
| if (args.equals("-simpleNames")) { |
| features.remove(RichFormatterFeature.SIMPLE_NAMES); |
| } |
| else if (args.equals("simpleNames")) { |
| features.add(RichFormatterFeature.SIMPLE_NAMES); |
| } |
| if (args.equals("-disambiguateTvars")) { |
| features.remove(RichFormatterFeature.UNIQUE_TYPEVAR_NAMES); |
| } |
| else if (args.equals("disambiguateTvars")) { |
| features.add(RichFormatterFeature.UNIQUE_TYPEVAR_NAMES); |
| } |
| } |
| } |
| } |
| |
| /** |
| * Returns a list of all the features supported by the rich formatter. |
| * @return list of supported features |
| */ |
| public RichFormatterFeature[] getAvailableFeatures() { |
| return RichFormatterFeature.values(); |
| } |
| |
| /** |
| * Enable a specific feature on this rich formatter. |
| * @param feature feature to be enabled |
| */ |
| public void enable(RichFormatterFeature feature) { |
| features.add(feature); |
| } |
| |
| /** |
| * Disable a specific feature on this rich formatter. |
| * @param feature feature to be disabled |
| */ |
| public void disable(RichFormatterFeature feature) { |
| features.remove(feature); |
| } |
| |
| /** |
| * Is a given feature enabled on this formatter? |
| * @param feature feature to be tested |
| */ |
| public boolean isEnabled(RichFormatterFeature feature) { |
| return features.contains(feature); |
| } |
| |
| /** |
| * The advanced formatting features provided by the rich formatter |
| */ |
| public enum RichFormatterFeature { |
| /** a list of additional info regarding a given type/symbol */ |
| WHERE_CLAUSES, |
| /** full class names simplification (where possible) */ |
| SIMPLE_NAMES, |
| /** type-variable names disambiguation */ |
| UNIQUE_TYPEVAR_NAMES |
| } |
| } |
| } |