Source Code Cross Referenced for CompilerEnvirons.java in  » Scripting » rhino » org » mozilla » javascript » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Scripting » rhino » org.mozilla.javascript 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /* -*- Mode: java; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
002:         *
003:         * ***** BEGIN LICENSE BLOCK *****
004:         * Version: MPL 1.1/GPL 2.0
005:         *
006:         * The contents of this file are subject to the Mozilla Public License Version
007:         * 1.1 (the "License"); you may not use this file except in compliance with
008:         * the License. You may obtain a copy of the License at
009:         * http://www.mozilla.org/MPL/
010:         *
011:         * Software distributed under the License is distributed on an "AS IS" basis,
012:         * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
013:         * for the specific language governing rights and limitations under the
014:         * License.
015:         *
016:         * The Original Code is Rhino code, released
017:         * May 6, 1999.
018:         *
019:         * The Initial Developer of the Original Code is
020:         * Netscape Communications Corporation.
021:         * Portions created by the Initial Developer are Copyright (C) 1997-1999
022:         * the Initial Developer. All Rights Reserved.
023:         *
024:         * Contributor(s):
025:         *   Igor Bukanov, igor@fastmail.fm
026:         *   Bob Jervis
027:         *
028:         * Alternatively, the contents of this file may be used under the terms of
029:         * the GNU General Public License Version 2 or later (the "GPL"), in which
030:         * case the provisions of the GPL are applicable instead of those above. If
031:         * you wish to allow use of your version of this file only under the terms of
032:         * the GPL and not to allow others to use your version of this file under the
033:         * MPL, indicate your decision by deleting the provisions above and replacing
034:         * them with the notice and other provisions required by the GPL. If you do
035:         * not delete the provisions above, a recipient may use your version of this
036:         * file under either the MPL or the GPL.
037:         *
038:         * ***** END LICENSE BLOCK ***** */
039:
040:        package org.mozilla.javascript;
041:
042:        import java.util.Hashtable;
043:
044:        public class CompilerEnvirons {
045:            public CompilerEnvirons() {
046:                errorReporter = DefaultErrorReporter.instance;
047:                languageVersion = Context.VERSION_DEFAULT;
048:                generateDebugInfo = true;
049:                useDynamicScope = false;
050:                reservedKeywordAsIdentifier = false;
051:                allowMemberExprAsFunctionName = false;
052:                xmlAvailable = true;
053:                optimizationLevel = 0;
054:                generatingSource = true;
055:                strictMode = false;
056:                warningAsError = false;
057:                generateObserverCount = false;
058:            }
059:
060:            public void initFromContext(Context cx) {
061:                setErrorReporter(cx.getErrorReporter());
062:                this .languageVersion = cx.getLanguageVersion();
063:                useDynamicScope = cx.compileFunctionsWithDynamicScopeFlag;
064:                generateDebugInfo = (!cx.isGeneratingDebugChanged() || cx
065:                        .isGeneratingDebug());
066:                reservedKeywordAsIdentifier = cx
067:                        .hasFeature(Context.FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER);
068:                allowMemberExprAsFunctionName = cx
069:                        .hasFeature(Context.FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME);
070:                strictMode = cx.hasFeature(Context.FEATURE_STRICT_MODE);
071:                warningAsError = cx
072:                        .hasFeature(Context.FEATURE_WARNING_AS_ERROR);
073:                xmlAvailable = cx.hasFeature(Context.FEATURE_E4X);
074:
075:                optimizationLevel = cx.getOptimizationLevel();
076:
077:                generatingSource = cx.isGeneratingSource();
078:                activationNames = cx.activationNames;
079:
080:                // Observer code generation in compiled code :
081:                generateObserverCount = cx.generateObserverCount;
082:            }
083:
084:            public final ErrorReporter getErrorReporter() {
085:                return errorReporter;
086:            }
087:
088:            public void setErrorReporter(ErrorReporter errorReporter) {
089:                if (errorReporter == null)
090:                    throw new IllegalArgumentException();
091:                this .errorReporter = errorReporter;
092:            }
093:
094:            public final int getLanguageVersion() {
095:                return languageVersion;
096:            }
097:
098:            public void setLanguageVersion(int languageVersion) {
099:                Context.checkLanguageVersion(languageVersion);
100:                this .languageVersion = languageVersion;
101:            }
102:
103:            public final boolean isGenerateDebugInfo() {
104:                return generateDebugInfo;
105:            }
106:
107:            public void setGenerateDebugInfo(boolean flag) {
108:                this .generateDebugInfo = flag;
109:            }
110:
111:            public final boolean isUseDynamicScope() {
112:                return useDynamicScope;
113:            }
114:
115:            public final boolean isReservedKeywordAsIdentifier() {
116:                return reservedKeywordAsIdentifier;
117:            }
118:
119:            public void setReservedKeywordAsIdentifier(boolean flag) {
120:                reservedKeywordAsIdentifier = flag;
121:            }
122:
123:            public final boolean isAllowMemberExprAsFunctionName() {
124:                return allowMemberExprAsFunctionName;
125:            }
126:
127:            public void setAllowMemberExprAsFunctionName(boolean flag) {
128:                allowMemberExprAsFunctionName = flag;
129:            }
130:
131:            public final boolean isXmlAvailable() {
132:                return xmlAvailable;
133:            }
134:
135:            public void setXmlAvailable(boolean flag) {
136:                xmlAvailable = flag;
137:            }
138:
139:            public final int getOptimizationLevel() {
140:                return optimizationLevel;
141:            }
142:
143:            public void setOptimizationLevel(int level) {
144:                Context.checkOptimizationLevel(level);
145:                this .optimizationLevel = level;
146:            }
147:
148:            public final boolean isGeneratingSource() {
149:                return generatingSource;
150:            }
151:
152:            public final boolean isStrictMode() {
153:                return strictMode;
154:            }
155:
156:            public final boolean reportWarningAsError() {
157:                return warningAsError;
158:            }
159:
160:            /**
161:             * Specify whether or not source information should be generated.
162:             * <p>
163:             * Without source information, evaluating the "toString" method
164:             * on JavaScript functions produces only "[native code]" for
165:             * the body of the function.
166:             * Note that code generated without source is not fully ECMA
167:             * conformant.
168:             */
169:            public void setGeneratingSource(boolean generatingSource) {
170:                this .generatingSource = generatingSource;
171:            }
172:
173:            /**
174:             * @return true iff code will be generated with callbacks to enable
175:             * instruction thresholds
176:             */
177:            public boolean isGenerateObserverCount() {
178:                return generateObserverCount;
179:            }
180:
181:            /**
182:             * Turn on or off generation of code with callbacks to
183:             * track the count of executed instructions.
184:             * Currently only affects JVM byte code generation: this slows down the
185:             * generated code, but code generated without the callbacks will not
186:             * be counted toward instruction thresholds. Rhino's interpretive
187:             * mode does instruction counting without inserting callbacks, so
188:             * there is no requirement to compile code differently.
189:             * @param generateObserverCount if true, generated code will contain
190:             * calls to accumulate an estimate of the instructions executed.
191:             */
192:            public void setGenerateObserverCount(boolean generateObserverCount) {
193:                this .generateObserverCount = generateObserverCount;
194:            }
195:
196:            private ErrorReporter errorReporter;
197:
198:            private int languageVersion;
199:            private boolean generateDebugInfo;
200:            private boolean useDynamicScope;
201:            private boolean reservedKeywordAsIdentifier;
202:            private boolean allowMemberExprAsFunctionName;
203:            private boolean xmlAvailable;
204:            private int optimizationLevel;
205:            private boolean generatingSource;
206:            private boolean strictMode;
207:            private boolean warningAsError;
208:            private boolean generateObserverCount;
209:            Hashtable activationNames;
210:        }
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