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Standard Widget Toolkit for GTK on ppc64le
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/*******************************************************************************
* Copyright (c) 2003, 2018 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.swt.browser;
import java.util.*;
import java.util.List;
import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
abstract class WebBrowser {
Browser browser;
Map functions = new HashMap<> ();
AuthenticationListener[] authenticationListeners = new AuthenticationListener[0];
CloseWindowListener[] closeWindowListeners = new CloseWindowListener[0];
LocationListener[] locationListeners = new LocationListener[0];
OpenWindowListener[] openWindowListeners = new OpenWindowListener[0];
ProgressListener[] progressListeners = new ProgressListener[0];
StatusTextListener[] statusTextListeners = new StatusTextListener[0];
TitleListener[] titleListeners = new TitleListener[0];
VisibilityWindowListener[] visibilityWindowListeners = new VisibilityWindowListener[0];
boolean jsEnabledOnNextPage = true, jsEnabled = true;
int nextFunctionIndex = 1;
Object evaluateResult;
static final String ERROR_ID = "org.eclipse.swt.browser.error"; // $NON-NLS-1$
static final String EXECUTE_ID = "SWTExecuteTemporaryFunction"; // $NON-NLS-1$
static List NativePendingCookies = new ArrayList<> ();
static String CookieName, CookieValue, CookieUrl;
static boolean CookieResult;
static Runnable NativeClearSessions;
static Runnable NativeGetCookie;
static Runnable NativeSetCookie;
/* Key Mappings */
static final int [][] KeyTable = {
/* Keyboard and Mouse Masks */
{18, SWT.ALT},
{16, SWT.SHIFT},
{17, SWT.CONTROL},
{224, SWT.COMMAND},
/* Literal Keys */
{65, 'a'},
{66, 'b'},
{67, 'c'},
{68, 'd'},
{69, 'e'},
{70, 'f'},
{71, 'g'},
{72, 'h'},
{73, 'i'},
{74, 'j'},
{75, 'k'},
{76, 'l'},
{77, 'm'},
{78, 'n'},
{79, 'o'},
{80, 'p'},
{81, 'q'},
{82, 'r'},
{83, 's'},
{84, 't'},
{85, 'u'},
{86, 'v'},
{87, 'w'},
{88, 'x'},
{89, 'y'},
{90, 'z'},
{48, '0'},
{49, '1'},
{50, '2'},
{51, '3'},
{52, '4'},
{53, '5'},
{54, '6'},
{55, '7'},
{56, '8'},
{57, '9'},
{32, ' '},
{59, ';'},
{61, '='},
{188, ','},
{190, '.'},
{191, '/'},
{219, '['},
{221, ']'},
{222, '\''},
{192, '`'},
{220, '\\'},
{108, '|'},
{226, '<'},
/* Non-Numeric Keypad Keys */
{37, SWT.ARROW_LEFT},
{39, SWT.ARROW_RIGHT},
{38, SWT.ARROW_UP},
{40, SWT.ARROW_DOWN},
{45, SWT.INSERT},
{36, SWT.HOME},
{35, SWT.END},
{46, SWT.DEL},
{33, SWT.PAGE_UP},
{34, SWT.PAGE_DOWN},
/* Virtual and Ascii Keys */
{8, SWT.BS},
{13, SWT.CR},
{9, SWT.TAB},
{27, SWT.ESC},
{12, SWT.DEL},
/* Functions Keys */
{112, SWT.F1},
{113, SWT.F2},
{114, SWT.F3},
{115, SWT.F4},
{116, SWT.F5},
{117, SWT.F6},
{118, SWT.F7},
{119, SWT.F8},
{120, SWT.F9},
{121, SWT.F10},
{122, SWT.F11},
{123, SWT.F12},
{124, SWT.F13},
{125, SWT.F14},
{126, SWT.F15},
{127, 0},
{128, 0},
{129, 0},
{130, 0},
{131, 0},
{132, 0},
{133, 0},
{134, 0},
{135, 0},
/* Numeric Keypad Keys */
{96, SWT.KEYPAD_0},
{97, SWT.KEYPAD_1},
{98, SWT.KEYPAD_2},
{99, SWT.KEYPAD_3},
{100, SWT.KEYPAD_4},
{101, SWT.KEYPAD_5},
{102, SWT.KEYPAD_6},
{103, SWT.KEYPAD_7},
{104, SWT.KEYPAD_8},
{105, SWT.KEYPAD_9},
{14, SWT.KEYPAD_CR},
{107, SWT.KEYPAD_ADD},
{109, SWT.KEYPAD_SUBTRACT},
{106, SWT.KEYPAD_MULTIPLY},
{111, SWT.KEYPAD_DIVIDE},
{110, SWT.KEYPAD_DECIMAL},
/* Other keys */
{20, SWT.CAPS_LOCK},
{144, SWT.NUM_LOCK},
{145, SWT.SCROLL_LOCK},
{44, SWT.PRINT_SCREEN},
{6, SWT.HELP},
{19, SWT.PAUSE},
{3, SWT.BREAK},
/* WebKit-specific */
{186, ';'},
{187, '='},
{189, '-'},
};
public class EvaluateFunction extends BrowserFunction {
public EvaluateFunction (Browser browser, String name) {
super (browser, name, true, new String[0], false);
}
@Override
public Object function (Object[] arguments) {
if (arguments[0] instanceof String string) {
if (string.startsWith (ERROR_ID)) {
String errorString = ExtractError (string);
if (errorString.length () > 0) {
evaluateResult = new SWTException (SWT.ERROR_FAILED_EVALUATE, errorString);
} else {
evaluateResult = new SWTException (SWT.ERROR_FAILED_EVALUATE);
}
return null;
}
}
evaluateResult = arguments[0];
return null;
}
}
public void addAuthenticationListener (AuthenticationListener listener) {
AuthenticationListener[] newAuthenticationListeners = new AuthenticationListener[authenticationListeners.length + 1];
System.arraycopy(authenticationListeners, 0, newAuthenticationListeners, 0, authenticationListeners.length);
authenticationListeners = newAuthenticationListeners;
authenticationListeners[authenticationListeners.length - 1] = listener;
}
public void addCloseWindowListener (CloseWindowListener listener) {
CloseWindowListener[] newCloseWindowListeners = new CloseWindowListener[closeWindowListeners.length + 1];
System.arraycopy(closeWindowListeners, 0, newCloseWindowListeners, 0, closeWindowListeners.length);
closeWindowListeners = newCloseWindowListeners;
closeWindowListeners[closeWindowListeners.length - 1] = listener;
}
public void addLocationListener (LocationListener listener) {
LocationListener[] newLocationListeners = new LocationListener[locationListeners.length + 1];
System.arraycopy(locationListeners, 0, newLocationListeners, 0, locationListeners.length);
locationListeners = newLocationListeners;
locationListeners[locationListeners.length - 1] = listener;
}
public void addOpenWindowListener (OpenWindowListener listener) {
OpenWindowListener[] newOpenWindowListeners = new OpenWindowListener[openWindowListeners.length + 1];
System.arraycopy(openWindowListeners, 0, newOpenWindowListeners, 0, openWindowListeners.length);
openWindowListeners = newOpenWindowListeners;
openWindowListeners[openWindowListeners.length - 1] = listener;
}
public void addProgressListener (ProgressListener listener) {
ProgressListener[] newProgressListeners = new ProgressListener[progressListeners.length + 1];
System.arraycopy(progressListeners, 0, newProgressListeners, 0, progressListeners.length);
progressListeners = newProgressListeners;
progressListeners[progressListeners.length - 1] = listener;
}
public void addStatusTextListener (StatusTextListener listener) {
StatusTextListener[] newStatusTextListeners = new StatusTextListener[statusTextListeners.length + 1];
System.arraycopy(statusTextListeners, 0, newStatusTextListeners, 0, statusTextListeners.length);
statusTextListeners = newStatusTextListeners;
statusTextListeners[statusTextListeners.length - 1] = listener;
}
public void addTitleListener (TitleListener listener) {
TitleListener[] newTitleListeners = new TitleListener[titleListeners.length + 1];
System.arraycopy(titleListeners, 0, newTitleListeners, 0, titleListeners.length);
titleListeners = newTitleListeners;
titleListeners[titleListeners.length - 1] = listener;
}
public void addVisibilityWindowListener (VisibilityWindowListener listener) {
VisibilityWindowListener[] newVisibilityWindowListeners = new VisibilityWindowListener[visibilityWindowListeners.length + 1];
System.arraycopy(visibilityWindowListeners, 0, newVisibilityWindowListeners, 0, visibilityWindowListeners.length);
visibilityWindowListeners = newVisibilityWindowListeners;
visibilityWindowListeners[visibilityWindowListeners.length - 1] = listener;
}
public abstract boolean back ();
public static void clearSessions () {
if (NativeClearSessions != null) NativeClearSessions.run ();
}
public static String GetCookie (String name, String url) {
CookieName = name; CookieUrl = url; CookieValue = null;
if (NativeGetCookie != null) NativeGetCookie.run ();
String result = CookieValue;
CookieName = CookieValue = CookieUrl = null;
return result;
}
public static boolean SetCookie (String value, String url, boolean addToPending) {
CookieValue = value; CookieUrl = url;
CookieResult = false;
if (NativeSetCookie != null) {
NativeSetCookie.run ();
} else {
if (addToPending && NativePendingCookies != null) {
NativePendingCookies.add (new String[] {value, url});
}
}
CookieValue = CookieUrl = null;
return CookieResult;
}
static void SetPendingCookies (List pendingCookies) {
for (String[] current : pendingCookies) {
SetCookie (current[0], current[1], false);
}
}
public abstract void create (Composite parent, int style);
static String CreateErrorString (String error) {
return ERROR_ID + error;
}
static String ExtractError (String error) {
return error.substring (ERROR_ID.length ());
}
public boolean close () {
return true;
}
public void createFunction (BrowserFunction function) {
/*
* If an existing function with the same name is found then
* remove it so that it is not recreated on subsequent pages
* (the new function overwrites the old one).
*/
for (BrowserFunction current : functions.values()) {
if (current.name.equals (function.name)) {
deregisterFunction (current);
break;
}
}
function.index = getNextFunctionIndex ();
registerFunction (function);
StringBuilder functionBuffer = new StringBuilder (function.name);
functionBuffer.append (" = function "); //$NON-NLS-1$
functionBuffer.append (function.name);
functionBuffer.append ("() {var result = callJava("); //$NON-NLS-1$
functionBuffer.append (function.index);
functionBuffer.append (",'"); //$NON-NLS-1$
functionBuffer.append (function.token);
functionBuffer.append ("',Array.prototype.slice.call(arguments)); if (typeof result == 'string' && result.indexOf('"); //$NON-NLS-1$
functionBuffer.append (ERROR_ID);
functionBuffer.append ("') == 0) {var error = new Error(result.substring("); //$NON-NLS-1$
functionBuffer.append (ERROR_ID.length ());
functionBuffer.append (")); throw error;} return result;};"); //$NON-NLS-1$
String javaCallDeclaration = getJavaCallDeclaration();
StringBuilder buffer = new StringBuilder ();
buffer.append (javaCallDeclaration);
if (function.top) {
buffer.append (functionBuffer.toString ());
}
buffer.append ("var frameIds = null;"); //$NON-NLS-1$
if (function.frameNames != null) {
buffer.append ("frameIds = {"); //$NON-NLS-1$
for (String frameName : function.frameNames) {
buffer.append ('\'');
buffer.append (frameName);
buffer.append ("':1,"); //$NON-NLS-1$
}
if (function.frameNames.length > 0) {
buffer.deleteCharAt(buffer.length () - 1);
}
buffer.append ("};"); //$NON-NLS-1$
}
buffer.append ("for (var i = 0; i < frames.length; i++) {try {if (!frameIds || (frames[i].name && frameIds[frames[i].name])) {"); //$NON-NLS-1$
buffer.append ("if (!frames[i].callJava) {frames[i].callJava = window.callJava;} frames[i]."); //$NON-NLS-1$
buffer.append (functionBuffer.toString ());
buffer.append ("}} catch(e) {}};"); //$NON-NLS-1$
function.functionString = buffer.toString ();
nonBlockingExecute (function.functionString);
}
/**
* Designed to be overriden.
* @return javaScrit code that defines the 'callJava' syntax for javascript.
*/
String getJavaCallDeclaration() {
return "if (!window.callJava) {\n"
+ " window.callJava = function callJava(index, token, args) {\n"
+ " return external.callJava(index,token,args);\n"
+ " }\n"
+ "};\n";
}
void deregisterFunction (BrowserFunction function) {
functions.remove (function.index);
}
public void destroyFunction (BrowserFunction function) {
String deleteString = getDeleteFunctionString (function.name);
StringBuilder buffer = new StringBuilder ("for (var i = 0; i < frames.length; i++) {try {frames[i].eval(\""); //$NON-NLS-1$
buffer.append (deleteString);
buffer.append ("\");} catch (e) {}}"); //$NON-NLS-1$
nonBlockingExecute (buffer.toString ());
nonBlockingExecute (deleteString);
deregisterFunction (function);
}
// Designed to be overriden by platform implementations, used for optimization and avoiding deadlocks.
// Webkit2 is async, we often don't need to bother waiting for a return type if we never use it.
void nonBlockingExecute(String script) {
execute(script);
}
public abstract boolean execute (String script);
public Object evaluate (String script, boolean trusted) throws SWTException {
return evaluate(script);
}
public Object evaluate (String script) throws SWTException {
// Gtk Developer note:
// Webkit1 uses this mechanism.
// Webkit2 uses a different mechanism. See WebKit:evaluate();
BrowserFunction function = new EvaluateFunction (browser, ""); // $NON-NLS-1$
int index = getNextFunctionIndex ();
function.index = index;
function.isEvaluate = true; // Note, Webkit2 doesn't use 'isEvaluate' machinery because it doesn't use a function for evaluation.
registerFunction (function);
String functionName = EXECUTE_ID + index;
StringBuilder buffer = new StringBuilder ("window."); // $NON-NLS-1$
buffer.append (functionName);
buffer.append (" = function "); // $NON-NLS-1$
buffer.append (functionName);
buffer.append ("() {\n"); // $NON-NLS-1$
buffer.append (script);
buffer.append ("\n};"); // $NON-NLS-1$
nonBlockingExecute (buffer.toString ());
buffer = new StringBuilder ("if (window."); // $NON-NLS-1$
buffer.append (functionName);
buffer.append (" == undefined) {window.external.callJava("); // $NON-NLS-1$
buffer.append (index);
buffer.append (",'"); //$NON-NLS-1$
buffer.append (function.token);
buffer.append ("', ['"); // $NON-NLS-1$
buffer.append (ERROR_ID);
buffer.append ("']);} else {try {var result = "); // $NON-NLS-1$
buffer.append (functionName);
buffer.append ("(); window.external.callJava("); // $NON-NLS-1$
buffer.append (index);
buffer.append (",'"); //$NON-NLS-1$
buffer.append (function.token);
buffer.append ("', [result]);} catch (e) {window.external.callJava("); // $NON-NLS-1$
buffer.append (index);
buffer.append (",'"); //$NON-NLS-1$
buffer.append (function.token);
buffer.append ("', ['"); // $NON-NLS-1$
buffer.append (ERROR_ID);
buffer.append ("' + e.message]);}}"); // $NON-NLS-1$
nonBlockingExecute (buffer.toString ());
nonBlockingExecute (getDeleteFunctionString (functionName));
deregisterFunction (function);
Object result = evaluateResult;
evaluateResult = null;
if (result instanceof SWTException) throw (SWTException)result;
return result;
}
public abstract boolean forward ();
public abstract String getBrowserType ();
String getDeleteFunctionString (String functionName) {
return "delete window." + functionName; //$NON-NLS-1$
}
int getNextFunctionIndex () {
return nextFunctionIndex++;
}
public abstract String getText ();
public abstract String getUrl ();
public Object getWebBrowser () {
return null;
}
public abstract boolean isBackEnabled ();
public boolean isFocusControl () {
return false;
}
public abstract boolean isForwardEnabled ();
public abstract void refresh ();
void registerFunction (BrowserFunction function) {
functions.put (function.index, function);
}
public void removeAuthenticationListener (AuthenticationListener listener) {
if (authenticationListeners.length == 0) return;
int index = -1;
for (int i = 0; i < authenticationListeners.length; i++) {
if (listener == authenticationListeners[i]) {
index = i;
break;
}
}
if (index == -1) return;
if (authenticationListeners.length == 1) {
authenticationListeners = new AuthenticationListener[0];
return;
}
AuthenticationListener[] newAuthenticationListeners = new AuthenticationListener[authenticationListeners.length - 1];
System.arraycopy (authenticationListeners, 0, newAuthenticationListeners, 0, index);
System.arraycopy (authenticationListeners, index + 1, newAuthenticationListeners, index, authenticationListeners.length - index - 1);
authenticationListeners = newAuthenticationListeners;
}
public void removeCloseWindowListener (CloseWindowListener listener) {
if (closeWindowListeners.length == 0) return;
int index = -1;
for (int i = 0; i < closeWindowListeners.length; i++) {
if (listener == closeWindowListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (closeWindowListeners.length == 1) {
closeWindowListeners = new CloseWindowListener[0];
return;
}
CloseWindowListener[] newCloseWindowListeners = new CloseWindowListener[closeWindowListeners.length - 1];
System.arraycopy (closeWindowListeners, 0, newCloseWindowListeners, 0, index);
System.arraycopy (closeWindowListeners, index + 1, newCloseWindowListeners, index, closeWindowListeners.length - index - 1);
closeWindowListeners = newCloseWindowListeners;
}
public void removeLocationListener (LocationListener listener) {
if (locationListeners.length == 0) return;
int index = -1;
for (int i = 0; i < locationListeners.length; i++) {
if (listener == locationListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (locationListeners.length == 1) {
locationListeners = new LocationListener[0];
return;
}
LocationListener[] newLocationListeners = new LocationListener[locationListeners.length - 1];
System.arraycopy (locationListeners, 0, newLocationListeners, 0, index);
System.arraycopy (locationListeners, index + 1, newLocationListeners, index, locationListeners.length - index - 1);
locationListeners = newLocationListeners;
}
public void removeOpenWindowListener (OpenWindowListener listener) {
if (openWindowListeners.length == 0) return;
int index = -1;
for (int i = 0; i < openWindowListeners.length; i++) {
if (listener == openWindowListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (openWindowListeners.length == 1) {
openWindowListeners = new OpenWindowListener[0];
return;
}
OpenWindowListener[] newOpenWindowListeners = new OpenWindowListener[openWindowListeners.length - 1];
System.arraycopy (openWindowListeners, 0, newOpenWindowListeners, 0, index);
System.arraycopy (openWindowListeners, index + 1, newOpenWindowListeners, index, openWindowListeners.length - index - 1);
openWindowListeners = newOpenWindowListeners;
}
public void removeProgressListener (ProgressListener listener) {
if (progressListeners.length == 0) return;
int index = -1;
for (int i = 0; i < progressListeners.length; i++) {
if (listener == progressListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (progressListeners.length == 1) {
progressListeners = new ProgressListener[0];
return;
}
ProgressListener[] newProgressListeners = new ProgressListener[progressListeners.length - 1];
System.arraycopy (progressListeners, 0, newProgressListeners, 0, index);
System.arraycopy (progressListeners, index + 1, newProgressListeners, index, progressListeners.length - index - 1);
progressListeners = newProgressListeners;
}
public void removeStatusTextListener (StatusTextListener listener) {
if (statusTextListeners.length == 0) return;
int index = -1;
for (int i = 0; i < statusTextListeners.length; i++) {
if (listener == statusTextListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (statusTextListeners.length == 1) {
statusTextListeners = new StatusTextListener[0];
return;
}
StatusTextListener[] newStatusTextListeners = new StatusTextListener[statusTextListeners.length - 1];
System.arraycopy (statusTextListeners, 0, newStatusTextListeners, 0, index);
System.arraycopy (statusTextListeners, index + 1, newStatusTextListeners, index, statusTextListeners.length - index - 1);
statusTextListeners = newStatusTextListeners;
}
public void removeTitleListener (TitleListener listener) {
if (titleListeners.length == 0) return;
int index = -1;
for (int i = 0; i < titleListeners.length; i++) {
if (listener == titleListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (titleListeners.length == 1) {
titleListeners = new TitleListener[0];
return;
}
TitleListener[] newTitleListeners = new TitleListener[titleListeners.length - 1];
System.arraycopy (titleListeners, 0, newTitleListeners, 0, index);
System.arraycopy (titleListeners, index + 1, newTitleListeners, index, titleListeners.length - index - 1);
titleListeners = newTitleListeners;
}
public void removeVisibilityWindowListener (VisibilityWindowListener listener) {
if (visibilityWindowListeners.length == 0) return;
int index = -1;
for (int i = 0; i < visibilityWindowListeners.length; i++) {
if (listener == visibilityWindowListeners[i]){
index = i;
break;
}
}
if (index == -1) return;
if (visibilityWindowListeners.length == 1) {
visibilityWindowListeners = new VisibilityWindowListener[0];
return;
}
VisibilityWindowListener[] newVisibilityWindowListeners = new VisibilityWindowListener[visibilityWindowListeners.length - 1];
System.arraycopy (visibilityWindowListeners, 0, newVisibilityWindowListeners, 0, index);
System.arraycopy (visibilityWindowListeners, index + 1, newVisibilityWindowListeners, index, visibilityWindowListeners.length - index - 1);
visibilityWindowListeners = newVisibilityWindowListeners;
}
boolean sendKeyEvent (Event event) {
int traversal = SWT.TRAVERSE_NONE;
boolean traverseDoit = true;
switch (event.keyCode) {
case SWT.ESC: {
traversal = SWT.TRAVERSE_ESCAPE;
traverseDoit = true;
break;
}
case SWT.CR: {
traversal = SWT.TRAVERSE_RETURN;
traverseDoit = false;
break;
}
case SWT.ARROW_DOWN:
case SWT.ARROW_RIGHT: {
traversal = SWT.TRAVERSE_ARROW_NEXT;
traverseDoit = false;
break;
}
case SWT.ARROW_UP:
case SWT.ARROW_LEFT: {
traversal = SWT.TRAVERSE_ARROW_PREVIOUS;
traverseDoit = false;
break;
}
case SWT.TAB: {
traversal = (event.stateMask & SWT.SHIFT) != 0 ? SWT.TRAVERSE_TAB_PREVIOUS : SWT.TRAVERSE_TAB_NEXT;
traverseDoit = (event.stateMask & SWT.CTRL) != 0;
break;
}
case SWT.PAGE_DOWN: {
if ((event.stateMask & SWT.CTRL) != 0) {
traversal = SWT.TRAVERSE_PAGE_NEXT;
traverseDoit = true;
}
break;
}
case SWT.PAGE_UP: {
if ((event.stateMask & SWT.CTRL) != 0) {
traversal = SWT.TRAVERSE_PAGE_PREVIOUS;
traverseDoit = true;
}
break;
}
default: {
if (translateMnemonics ()) {
if (event.character != 0 && (event.stateMask & (SWT.ALT | SWT.CTRL)) == SWT.ALT) {
traversal = SWT.TRAVERSE_MNEMONIC;
traverseDoit = true;
}
}
break;
}
}
boolean doit = true;
if (traversal != SWT.TRAVERSE_NONE) {
boolean oldEventDoit = event.doit;
event.doit = traverseDoit;
doit = !browser.traverse (traversal, event);
event.doit = oldEventDoit;
}
if (doit) {
browser.notifyListeners (event.type, event);
doit = event.doit;
}
return doit;
}
public void setBrowser (Browser browser) {
this.browser = browser;
}
public abstract boolean setText (String html, boolean trusted);
public abstract boolean setUrl (String url, String postData, String[] headers);
public abstract void stop ();
int translateKey (int key) {
for (int[] element : KeyTable) {
if (element[0] == key) return element[1];
}
return 0;
}
boolean translateMnemonics () {
return true;
}
}
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