content: /*
   * Copyright (c) 2014, 2019, 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
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   */
  
  package openjdk.tools.sjavac.pubapi;
  
  import java.io.Serializable;
  
  import jdkx.lang.model.type.ArrayType;
  import jdkx.lang.model.type.DeclaredType;
  import jdkx.lang.model.type.ErrorType;
  import jdkx.lang.model.type.NoType;
  import jdkx.lang.model.type.PrimitiveType;
  import jdkx.lang.model.type.TypeKind;
  import jdkx.lang.model.type.TypeMirror;
  import jdkx.lang.model.type.TypeVariable;
  import jdkx.lang.model.type.TypeVisitor;
  import jdkx.lang.model.util.SimpleTypeVisitor14;
  
  import openjdk.tools.javac.code.Type.ClassType;
  import openjdk.tools.javac.util.DefinedBy;
  import openjdk.tools.javac.util.DefinedBy.Api;
  import openjdk.tools.javac.util.StringUtils;
  
  public abstract class TypeDesc implements Serializable {
  
      private static final long serialVersionUID = -8201634143915519172L;
  
      TypeKind typeKind;
  
      public TypeDesc(TypeKind typeKind) {
          this.typeKind = typeKind;
      }
  
      public static TypeDesc decodeString(String s) {
          s = s.trim();
          if (s.endsWith("[]")) {
              String componentPart = s.substring(0, s.length()-2);
              return new ArrayTypeDesc(decodeString(componentPart));
          }
  
          if (s.startsWith("#"))
              return new TypeVarTypeDesc(s.substring(1));
  
          if (s.matches("boolean|byte|char|double|float|int|long|short|void")) {
              TypeKind tk = TypeKind.valueOf(StringUtils.toUpperCase(s));
              return new PrimitiveTypeDesc(tk);
          }
  
          return new ReferenceTypeDesc(s);
      }
  
      public static String encodeAsString(TypeDesc td) {
          if (td.typeKind.isPrimitive() || td.typeKind == TypeKind.VOID)
              return StringUtils.toLowerCase(td.typeKind.toString());
  
          if (td.typeKind == TypeKind.ARRAY)
              return encodeAsString(((ArrayTypeDesc) td).compTypeDesc) + "[]";
  
          if (td.typeKind == TypeKind.TYPEVAR)
              return "#" + ((TypeVarTypeDesc) td).identifier;
  
          if (td.typeKind == TypeKind.DECLARED)
              return ((ReferenceTypeDesc) td).javaType.toString();
  
          throw new AssertionError("Unhandled type: " + td.typeKind);
      }
  
      public static TypeDesc fromType(TypeMirror type) {
          TypeVisitor<TypeDesc, Void> v = new SimpleTypeVisitor14<TypeDesc, Void>() {
              @Override @DefinedBy(Api.LANGUAGE_MODEL)
              public TypeDesc visitArray(ArrayType t, Void p) {
                  return new ArrayTypeDesc(t.getComponentType().accept(this, p));
              }
  
              @Override @DefinedBy(Api.LANGUAGE_MODEL)
              public TypeDesc visitDeclared(DeclaredType t, Void p) {
                  return new ReferenceTypeDesc(((ClassType) t).tsym.flatName().toString());
              }
  
              @Override @DefinedBy(Api.LANGUAGE_MODEL)
              public TypeDesc visitNoType(NoType t, Void p) {
                  return new PrimitiveTypeDesc(TypeKind.VOID);
              }
  
              @Override @DefinedBy(Api.LANGUAGE_MODEL)
              public TypeDesc visitTypeVariable(TypeVariable t, Void p) {
                  return new TypeVarTypeDesc(t.toString());
              }
  
              @Override @DefinedBy(Api.LANGUAGE_MODEL)
              public TypeDesc visitPrimitive(PrimitiveType t, Void p) {
                  return new PrimitiveTypeDesc(t.getKind());
              }
  
              @Override @DefinedBy(Api.LANGUAGE_MODEL)
              public TypeDesc visitError(ErrorType t, Void p) {
                  return new ReferenceTypeDesc("<error type>");
              }
          };
  
          TypeDesc td = v.visit(type);
          if (td == null)
              throw new AssertionError("Unhandled type mirror: " + type + " (" + type.getClass() + ")");
          return td;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (getClass() != obj.getClass())
              return false;
          return typeKind.equals(((TypeDesc) obj).typeKind);
      }
  
      @Override
      public int hashCode() {
          return typeKind.hashCode();
      }
  }
  