JDK8/Java8源码在线阅读
/*
* Copyright (c) 1998, 2011, 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 com.sun.tools.jdi;
import com.sun.tools.jdi.*;
import com.sun.jdi.*;
import com.sun.jdi.connect.*;
import com.sun.jdi.InternalException;
import java.util.Collections;
import java.util.Collection;
import java.util.Map;
import java.util.List;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.ResourceBundle;
import java.io.Serializable;
abstract class ConnectorImpl implements Connector {
Map<String,Argument> defaultArguments = new java.util.LinkedHashMap<String,Argument>();
// Used by BooleanArgument
static String trueString = null;
static String falseString;
public Map<String,Argument> defaultArguments() {
Map<String,Argument> defaults = new java.util.LinkedHashMap<String,Argument>();
Collection<Argument> values = defaultArguments.values();
Iterator<Argument> iter = values.iterator();
while (iter.hasNext()) {
ArgumentImpl argument = (ArgumentImpl)iter.next();
defaults.put(argument.name(), (Argument)argument.clone());
}
return defaults;
}
void addStringArgument(String name, String label, String description,
String defaultValue, boolean mustSpecify) {
defaultArguments.put(name,
new StringArgumentImpl(name, label,
description,
defaultValue,
mustSpecify));
}
void addBooleanArgument(String name, String label, String description,
boolean defaultValue, boolean mustSpecify) {
defaultArguments.put(name,
new BooleanArgumentImpl(name, label,
description,
defaultValue,
mustSpecify));
}
void addIntegerArgument(String name, String label, String description,
String defaultValue, boolean mustSpecify,
int min, int max) {
defaultArguments.put(name,
new IntegerArgumentImpl(name, label,
description,
defaultValue,
mustSpecify,
min, max));
}
void addSelectedArgument(String name, String label, String description,
String defaultValue, boolean mustSpecify,
List<String> list) {
defaultArguments.put(name,
new SelectedArgumentImpl(name, label,
description,
defaultValue,
mustSpecify, list));
}
ArgumentImpl argument(String name, Map<String, ? extends Argument> arguments)
throws IllegalConnectorArgumentsException {
ArgumentImpl argument = (ArgumentImpl)arguments.get(name);
if (argument == null) {
throw new IllegalConnectorArgumentsException(
"Argument missing", name);
}
String value = argument.value();
if (value == null || value.length() == 0) {
if (argument.mustSpecify()) {
throw new IllegalConnectorArgumentsException(
"Argument unspecified", name);
}
} else if(!argument.isValid(value)) {
throw new IllegalConnectorArgumentsException(
"Argument invalid", name);
}
return argument;
}
private ResourceBundle messages = null;
String getString(String key) {
if (messages == null) {
messages = ResourceBundle.getBundle("com.sun.tools.jdi.resources.jdi");
}
return messages.getString(key);
}
public String toString() {
String string = name() + " (defaults: ";
Iterator<Argument> iter = defaultArguments().values().iterator();
boolean first = true;
while (iter.hasNext()) {
ArgumentImpl argument = (ArgumentImpl)iter.next();
if (!first) {
string += ", ";
}
string += argument.toString();
first = false;
}
string += ")";
return string;
}
abstract class ArgumentImpl implements Connector.Argument, Cloneable, Serializable {
private String name;
private String label;
private String description;
private String value;
private boolean mustSpecify;
ArgumentImpl(String name, String label, String description,
String value,
boolean mustSpecify) {
this.name = name;
this.label = label;
this.description = description;
this.value = value;
this.mustSpecify = mustSpecify;
}
public abstract boolean isValid(String value);
public String name() {
return name;
}
public String label() {
return label;
}
public String description() {
return description;
}
public String value() {
return value;
}
public void setValue(String value) {
if (value == null) {
throw new NullPointerException("Can't set null value");
}
this.value = value;
}
public boolean mustSpecify() {
return mustSpecify;
}
public boolean equals(Object obj) {
if ((obj != null) && (obj instanceof Connector.Argument)) {
Connector.Argument other = (Connector.Argument)obj;
return (name().equals(other.name())) &&
(description().equals(other.description())) &&
(mustSpecify() == other.mustSpecify()) &&
(value().equals(other.value()));
} else {
return false;
}
}
public int hashCode() {
return description().hashCode();
}
public Object clone() {
try {
return super.clone();
} catch (CloneNotSupportedException e) {
// Object should always support clone
throw new InternalException();
}
}
public String toString() {
return name() + "=" + value();
}
}
class BooleanArgumentImpl extends ConnectorImpl.ArgumentImpl
implements Connector.BooleanArgument {
private static final long serialVersionUID = 1624542968639361316L;
BooleanArgumentImpl(String name, String label, String description,
boolean value,
boolean mustSpecify) {
super(name, label, description, null, mustSpecify);
if(trueString == null) {
trueString = getString("true");
falseString = getString("false");
}
setValue(value);
}
/**
* Sets the value of the argument.
*/
public void setValue(boolean value) {
setValue(stringValueOf(value));
}
/**
* Performs basic sanity check of argument.
* @return <code>true</code> if value is a string
* representation of a boolean value.
* @see #stringValueOf(boolean)
*/
public boolean isValid(String value) {
return value.equals(trueString) || value.equals(falseString);
}
/**
* Return the string representation of the <code>value</code>
* parameter.
* Does not set or examine the value or the argument.
* @return the localized String representation of the
* boolean value.
*/
public String stringValueOf(boolean value) {
return value? trueString : falseString;
}
/**
* Return the value of the argument as a boolean. Since
* the argument may not have been set or may have an invalid
* value {@link #isValid(String)} should be called on
* {@link #value()} to check its validity. If it is invalid
* the boolean returned by this method is undefined.
* @return the value of the argument as a boolean.
*/
public boolean booleanValue() {
return value().equals(trueString);
}
}
class IntegerArgumentImpl extends ConnectorImpl.ArgumentImpl
implements Connector.IntegerArgument {
private static final long serialVersionUID = 763286081923797770L;
private final int min;
private final int max;
IntegerArgumentImpl(String name, String label, String description,
String value,
boolean mustSpecify, int min, int max) {
super(name, label, description, value, mustSpecify);
this.min = min;
this.max = max;
}
/**
* Sets the value of the argument.
* The value should be checked with {@link #isValid(int)}
* before setting it; invalid values will throw an exception
* when the connection is established - for example,
* on {@link LaunchingConnector#launch}
*/
public void setValue(int value) {
setValue(stringValueOf(value));
}
/**
* Performs basic sanity check of argument.
* @return <code>true</code> if value represents an int that is
* <code>{@link #min()} <= value <= {@link #max()}</code>
*/
public boolean isValid(String value) {
if (value == null) {
return false;
}
try {
return isValid(Integer.decode(value).intValue());
} catch(NumberFormatException exc) {
return false;
}
}
/**
* Performs basic sanity check of argument.
* @return <code>true</code> if
* <code>{@link #min()} <= value <= {@link #max()}</code>
*/
public boolean isValid(int value) {
return min <= value && value <= max;
}
/**
* Return the string representation of the <code>value</code>
* parameter.
* Does not set or examine the value or the argument.
* @return the String representation of the
* int value.
*/
public String stringValueOf(int value) {
// *** Should this be internationalized????
// *** Even Brian Beck was unsure if an Arabic programmer
// *** would expect port numbers in Arabic numerals,
// *** so punt for now.
return ""+value;
}
/**
* Return the value of the argument as a int. Since
* the argument may not have been set or may have an invalid
* value {@link #isValid(String)} should be called on
* {@link #value()} to check its validity. If it is invalid
* the int returned by this method is undefined.
* @return the value of the argument as a int.
*/
public int intValue() {
if (value() == null) {
return 0;
}
try {
return Integer.decode(value()).intValue();
} catch(NumberFormatException exc) {
return 0;
}
}
/**
* The upper bound for the value.
* @return the maximum allowed value for this argument.
*/
public int max() {
return max;
}
/**
* The lower bound for the value.
* @return the minimum allowed value for this argument.
*/
public int min() {
return min;
}
}
class StringArgumentImpl extends ConnectorImpl.ArgumentImpl
implements Connector.StringArgument {
private static final long serialVersionUID = 7500484902692107464L;
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