jdk8-mips64-public/corba: src/share/classes/sun/rmi/rmic/iiop/ContextStack.java@6845b95cba6b (annotated)

src/share/classes/sun/rmi/rmic/iiop/ContextStack.java@6845b95cba6b (annotated)

src/share/classes/sun/rmi/rmic/iiop/ContextStack.java

Thu, 31 Aug 2017 18:10:36 +0800

author: aoqi
date: Thu, 31 Aug 2017 18:10:36 +0800
changeset 748: 6845b95cba6b
parent 158: 91006f157c46
parent 0: 7ef37b2cdcad
permissions: -rw-r--r--

merge

 /*
  * Copyright (c) 1998, 2007, 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.
  */
 /*
  * Licensed Materials - Property of IBM
  * RMI-IIOP v1.0
  * Copyright IBM Corp. 1998 1999  All Rights Reserved
  *
  */
 package sun.rmi.rmic.iiop;
 import sun.tools.java.CompilerError;
 /**
  * ContextStack provides a mechanism to record parsing state.
  *
  * @author      Bryan Atsatt
  */
 public class ContextStack {
     // Context codes.
     public static final int TOP = 1;
     public static final int METHOD = 2;
     public static final int METHOD_RETURN = 3;
     public static final int METHOD_ARGUMENT = 4;
     public static final int METHOD_EXCEPTION = 5;
     public static final int MEMBER = 6;
     public static final int MEMBER_CONSTANT = 7;
     public static final int MEMBER_STATIC = 8;
     public static final int MEMBER_TRANSIENT = 9;
     public static final int IMPLEMENTS = 10;
     public static final int EXTENDS = 11;
     // String versions of context codes.
     private static final String[] CODE_NAMES = {
         "UNKNOWN ",
         "Top level type ",
         "Method ",
         "Return parameter ",
         "Parameter ",
         "Exception ",
         "Member ",
         "Constant member ",
         "Static member ",
         "Transient member ",
         "Implements ",
         "Extends ",
     };
     // Member data.
     private int currentIndex = -1;
     private int maxIndex = 100;
     private TypeContext[] stack = new TypeContext[maxIndex];
     private int newCode = TOP;
     private BatchEnvironment env = null;
     private boolean trace = false;
     private TypeContext tempContext = new TypeContext();
     private static final String TRACE_INDENT = "   ";
     /**
      * Constructor.
      */
     public ContextStack (BatchEnvironment env) {
         this.env = env;
         env.contextStack = this;
     }
     /**
      * Return true if env.nerrors > 0.
      */
     public boolean anyErrors () {
         return env.nerrors > 0;
     }
     /**
      * Enable/disable tracing.
      */
     public void setTrace(boolean trace) {
         this.trace = trace;
     }
     /**
      * Check trace flag.
      */
     public boolean isTraceOn() {
         return trace;
     }
     /**
      * Get the environment.
      */
     public BatchEnvironment getEnv() {
         return env;
     }
     /**
      * Set the new context.
      */
     public void setNewContextCode(int code) {
         newCode = code;
     }
     /**
      * Get the current context code.
      */
     public int getCurrentContextCode() {
         return newCode;
     }
     /**
      * If tracing on, write the current call stack (not the context stack) to
      * System.out.
      */
     final void traceCallStack () {
         if (trace) dumpCallStack();
     }
     public final static void dumpCallStack() {
         new Error().printStackTrace(System.out);
     }
     /**
      * Print a line indented by stack depth.
      */
     final private void tracePrint (String text, boolean line) {
         int length = text.length() + (currentIndex * TRACE_INDENT.length());
         StringBuffer buffer = new StringBuffer(length);
         for (int i = 0; i < currentIndex; i++) {
             buffer.append(TRACE_INDENT);
         }
         buffer.append(text);
         if (line) {
             buffer.append("\n");
         }
         System.out.print(buffer.toString());
     }
     /**
      * If tracing on, print a line.
      */
     final void trace (String text) {
         if (trace) {
             tracePrint(text,false);
         }
     }
     /**
      * If tracing on, print a line followed by a '\n'.
      */
     final void traceln (String text) {
         if (trace) {
             tracePrint(text,true);
         }
     }
     /**
      * If tracing on, print a pre-mapped ContextElement.
      */
     final void traceExistingType (Type type) {
         if (trace) {
             tempContext.set(newCode,type);
             traceln(toResultString(tempContext,true,true));
         }
     }
     /**
      * Push a new element on the stack.
      * @return the new element.
      */
     public TypeContext push (ContextElement element) {
         currentIndex++;
         // Grow array if need to...
         if (currentIndex == maxIndex) {
             int newMax = maxIndex * 2;
             TypeContext[] newStack = new TypeContext[newMax];
             System.arraycopy(stack,0,newStack,0,maxIndex);
             maxIndex = newMax;
             stack = newStack;
         }
         // Make sure we have a context object to use at this position...
         TypeContext it = stack[currentIndex];
         if (it == null) {
             it = new TypeContext();
             stack[currentIndex] = it;
         }
         // Set the context object...
         it.set(newCode,element);
         // Trace...
         traceln(toTrialString(it));
         // Return...
         return it;
     }
     /**
      * Pop an element from the stack.
      * @return the new current element or null if top.
      */
     public TypeContext pop (boolean wasValid) {
         if (currentIndex < 0) {
             throw new CompilerError("Nothing on stack!");
         }
         newCode = stack[currentIndex].getCode();
         traceln(toResultString(stack[currentIndex],wasValid,false));
         Type last = stack[currentIndex].getCandidateType();
         if (last != null) {
             // Set status...
             if (wasValid) {
                 last.setStatus(Constants.STATUS_VALID);
             } else {
                 last.setStatus(Constants.STATUS_INVALID);
             }
         }
         currentIndex--;
         if (currentIndex < 0) {
             // Done parsing, so update the invalid types
             // if this type was valid...
             if (wasValid) {
                 Type.updateAllInvalidTypes(this);
             }
             return null;
         } else {
             return stack[currentIndex];
         }
     }
     /**
      * Get the current size.
      */
     public int size () {
         return currentIndex + 1;
     }
     /**
      * Get a specific context.
      */
     public TypeContext getContext (int index) {
         if (currentIndex < index) {
             throw new Error("Index out of range");
         }
         return stack[index];
     }
     /**
      * Get the current top context.
      */
     public TypeContext getContext () {
         if (currentIndex < 0) {
             throw new Error("Nothing on stack!");
         }
         return stack[currentIndex];
     }
     /**
      * Is parent context a value type?
      */
     public boolean isParentAValue () {
         if (currentIndex > 0) {
             return stack[currentIndex - 1].isValue();
         } else {
             return false;
         }
     }
     /**
      * Get parent context. Null if none.
      */
     public TypeContext getParentContext () {
         if (currentIndex > 0) {
             return stack[currentIndex - 1];
         } else {
             return null;
         }
     }
     /**
      * Get a string for the context name...
      */
     public String getContextCodeString () {
         if (currentIndex >= 0) {
             return CODE_NAMES[newCode];
         } else {
             return CODE_NAMES[0];
         }
     }
     /**
      * Get a string for the given context code...
      */
     public static String getContextCodeString (int contextCode) {
         return CODE_NAMES[contextCode];
     }
     private String toTrialString(TypeContext it) {
         int code = it.getCode();
         if (code != METHOD && code != MEMBER) {
             return it.toString() + " (trying " + it.getTypeDescription() + ")";
         } else {
             return it.toString();
         }
     }
     private String toResultString (TypeContext it, boolean result, boolean preExisting) {
         int code = it.getCode();
         if (code != METHOD && code != MEMBER) {
             if (result) {
                 String str = it.toString() + " --> " + it.getTypeDescription();
                 if (preExisting) {
                     return str + " [Previously mapped]";
                 } else {
                     return str;
                 }
             }
         } else {
             if (result) {
                 return it.toString() + " --> [Mapped]";
             }
         }
         return it.toString() + " [Did not map]";
     }
     public void clear () {
         for (int i = 0; i < stack.length; i++) {
             if (stack[i] != null) stack[i].destroy();
         }
     }
 }
 class TypeContext {
     public void set(int code, ContextElement element) {
         this.code = code;
         this.element = element;
         if (element instanceof ValueType) {
             isValue = true;
         } else {
             isValue = false;
         }
     }
     public int getCode() {
         return code;
     }
     public String getName() {
         return element.getElementName();
     }
     public Type getCandidateType() {
         if (element instanceof Type) {
             return (Type) element;
         } else {
             return null;
         }
 }
 public String getTypeDescription() {
     if (element instanceof Type) {
         return ((Type) element).getTypeDescription();
     } else {
         return "[unknown type]";
     }
 }
 public String toString () {
     if (element != null) {
         return ContextStack.getContextCodeString(code) + element.getElementName();
     } else {
         return ContextStack.getContextCodeString(code) + "null";
     }
 }
 public boolean isValue () {
     return isValue;
 }
     public boolean isConstant () {
         return code == ContextStack.MEMBER_CONSTANT;
     }
     public void destroy() {
         if (element instanceof Type) {
             ((Type)element).destroy();
         }
         element = null;
     }
     private int code = 0;
     private ContextElement element = null;
     private boolean isValue = false;
 }

Mercurial > jdk8-mips64-public > corba / annotate

src/share/classes/sun/rmi/rmic/iiop/ContextStack.java@6845b95cba6b (annotated)

src/share/classes/sun/rmi/rmic/iiop/ContextStack.java