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* Enhancement to add ECMAScript 6 support (#1574)
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131 changes: 131 additions & 0 deletions
131
...ne.script.javascript/src/org/eclipse/birt/report/engine/javascript/JavascriptVersion.java
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| package org.eclipse.birt.report.engine.javascript; | ||
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| /** | ||
| * Copyright (c) 2024 Thomas Gutmann. | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Eclipse Public License 2.0 which is available at | ||
| * https://www.eclipse.org/legal/epl-2.0/. | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| * | ||
| * Handling of the JavaScript version evaluation | ||
| * | ||
| * Contributors: Thomas Gutmann - initial implementation | ||
| * | ||
| * @since 4.16 | ||
| * | ||
| */ | ||
| public class JavascriptVersion { | ||
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| /** | ||
| * Constructor | ||
| */ | ||
| public JavascriptVersion() { | ||
| evaluateEcmaScriptVersion(); | ||
| } | ||
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| /** Valid JavaScript versions */ | ||
| /** JavaScript 1.0 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_0 = 100; | ||
| /** JavaScript 1.1 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_1 = 110; | ||
| /** JavaScript 1.2 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_2 = 120; | ||
| /** JavaScript 1.3 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_3 = 130; | ||
| /** JavaScript 1.4 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_4 = 140; | ||
| /** JavaScript 1.5 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_5 = 150; | ||
| /** JavaScript 1.6 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_6 = 160; | ||
| /** JavaScript 1.7 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_7 = 170; | ||
| /** JavaScript 1.8 */ | ||
| private static final int ECMA_SCRIPT_VERSION_1_8 = 180; | ||
| /** JavaScript 1.8 */ | ||
| private static final int ECMA_SCRIPT_VERSION_ES6 = 200; | ||
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| /** System property of the JavaScript version */ | ||
| private static final String ECMA_SCRIPT_VERSION_PROPERTY_KEY = "birt.ecmascript.version"; //$NON-NLS-1$ | ||
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| /** Valid keys of the system property */ | ||
| private static final String ECMA_SCRIPT_VERSION_1_0_KEY = "1.0"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_1_KEY = "1.1"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_2_KEY = "1.2"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_3_KEY = "1.3"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_4_KEY = "1.4"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_5_KEY = "1.5"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_6_KEY = "1.6"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_7_KEY = "1.7"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_1_8_KEY = "1.8"; //$NON-NLS-1$ | ||
| private static final String ECMA_SCRIPT_VERSION_ES6_KEY = "ES6"; //$NON-NLS-1$ | ||
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| private int valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_ES6; | ||
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| private String configuredECMAScriptVersion; | ||
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| /** | ||
| * Get the EMCAScript version number | ||
| * | ||
| * @return the ECMAScript version number | ||
| */ | ||
| public int getECMAScriptVersion() { | ||
| return this.valueEcmaScriptVersion; | ||
| } | ||
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| /** | ||
| * Get the configured EMCAScript version of JVM | ||
| * | ||
| * @return the ECMAScript version configured at JVM | ||
| */ | ||
| public String getConfiguredECMAScriptVersion() { | ||
| return this.configuredECMAScriptVersion; | ||
| } | ||
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| /** | ||
| * Evaluate the system property to set the version number of the Rhino engine | ||
| */ | ||
| private void evaluateEcmaScriptVersion() { | ||
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| /* System property: -Dbirt.ecmascript.version */ | ||
| configuredECMAScriptVersion = System.getProperty(ECMA_SCRIPT_VERSION_PROPERTY_KEY); | ||
| if (configuredECMAScriptVersion != null) { | ||
| switch (configuredECMAScriptVersion) { | ||
| case ECMA_SCRIPT_VERSION_1_0_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_0; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_1_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_1; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_2_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_2; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_3_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_3; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_4_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_4; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_5_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_5; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_6_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_6; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_7_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_7; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_1_8_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_1_8; | ||
| break; | ||
| case ECMA_SCRIPT_VERSION_ES6_KEY: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_ES6; | ||
| break; | ||
| default: | ||
| this.valueEcmaScriptVersion = ECMA_SCRIPT_VERSION_ES6; | ||
| } | ||
| } | ||
| } | ||
| } |
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...ngine.script.javascript/src/org/eclipse/birt/report/engine/javascript/README.md
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| # Eclipse BIRT | ||
| Introduction to use the configuration of the JavaScript language version. | ||
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| ## Reason | ||
| The JavaScript engine of BIRT is based on the Rhino engine. The default language version of the Rhino engine is JavaScript version 1.6. Rhino supports different language versions of JavaScript including the latest version ECMAScript 6. | ||
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| On **BIRT** side the Rhino engine will be run with the latest version **ECMAScript 6**. | ||
| To be compatible with earlier JavaScript versions a global system property is given which can be set at JVM level to change the JavaScript language version. | ||
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| All supported JavaScript language versions of the Rhino engine can be configured. | ||
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| ### JVM configuration of the JavaScript language version | ||
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| The configuration will be done as a global starting parameter of the JVM. | ||
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| **birt.ecmascript.version** | ||
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| Content configuration of the JavaScript language version | ||
| Parameter -Dbirt.ecmascript.version | ||
| Location JVM | ||
| Data type string | ||
| Values value of the supported language version | ||
| Supported 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, ES6 | ||
| Default ES6 (= EMCAScript 6) | ||
| Version 4.16 | ||
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| ** Function reference of Rhino** | ||
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| - An overview of Rhino engine supported functions are listed here: [Rhino ES2015 Support](https://mozilla.github.io/rhino/compat/engines.html) | ||
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| - The Rhino engine will be integrated at BIRT through the Orbit-project: [Orbit Aggregation Summary](https://download.eclipse.org/tools/orbit/simrel/orbit-aggregation/table.html) |
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