| /******************************************************************************* |
| * Copyright (c) 2014 Sierra Wireless and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Sierra Wireless - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.ldt.core.internal.grammar; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.ProjectScope; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IConfigurationElement; |
| import org.eclipse.core.runtime.Platform; |
| import org.eclipse.core.runtime.preferences.IScopeContext; |
| import org.eclipse.core.runtime.preferences.InstanceScope; |
| import org.eclipse.ldt.core.buildpath.LuaExecutionEnvironment; |
| import org.eclipse.ldt.core.grammar.IGrammar; |
| import org.eclipse.ldt.core.grammar.ILuaSourceValidator; |
| import org.eclipse.ldt.core.internal.Activator; |
| import org.eclipse.ldt.core.internal.LuaLanguageToolkit; |
| import org.eclipse.ldt.core.internal.PreferenceInitializer; |
| import org.eclipse.ui.preferences.ScopedPreferenceStore; |
| |
| public final class LuaGrammarManager { |
| |
| private static final String EXTENSION_POINT_ID = "org.eclipse.ldt.luaGrammar"; //$NON-NLS-1$ |
| private static final String ATTRIBUTE_NAME = "name"; //$NON-NLS-1$ |
| private static final String ATTRIBUTE_VALIDATOR = "validator"; //$NON-NLS-1$ |
| private static final String ATTRIBUTE_KEYWORDS = "keywords"; //$NON-NLS-1$ |
| private static final String KEYWORDS_SEPARATOR = ","; //$NON-NLS-1$ |
| |
| private LuaGrammarManager() { |
| } |
| |
| private static IConfigurationElement getGrammarContribution(String name) throws CoreException { |
| if (name == null) |
| return null; |
| |
| // search plug-in contribution |
| IConfigurationElement[] contributions = Platform.getExtensionRegistry().getConfigurationElementsFor(EXTENSION_POINT_ID); |
| for (int i = 0; i < contributions.length; i++) { |
| String nameAttribute = contributions[i].getAttribute(ATTRIBUTE_NAME); |
| |
| if (name.equals(nameAttribute)) { |
| return contributions[i]; |
| } |
| } |
| return null; |
| } |
| |
| private static IGrammar getGrammarFromContribution(final String name) throws CoreException { |
| // search plug-in contribution |
| IConfigurationElement grammarContribution = getGrammarContribution(name); |
| if (grammarContribution != null) { |
| |
| final ILuaSourceValidator validator = (ILuaSourceValidator) grammarContribution.createExecutableExtension(ATTRIBUTE_VALIDATOR); |
| |
| final String keywordsAttribute = grammarContribution.getAttribute(ATTRIBUTE_KEYWORDS); |
| final List<String> keywords = new ArrayList<String>(); |
| if (keywordsAttribute != null) { |
| for (String word : keywordsAttribute.split(KEYWORDS_SEPARATOR)) { |
| // TODO validate the keyword ? no special char, ... |
| String cleanWord = word.trim(); |
| if (!cleanWord.isEmpty()) |
| keywords.add(cleanWord); |
| } |
| } |
| |
| return new IGrammar() { |
| |
| @Override |
| public ILuaSourceValidator getValidator() { |
| return validator; |
| } |
| |
| @Override |
| public String getName() { |
| return name; |
| } |
| |
| @Override |
| public List<String> getKeywords() { |
| return keywords; |
| } |
| }; |
| } |
| return null; |
| } |
| |
| public static IGrammar getAvailableGrammar(String name) throws CoreException { |
| return getGrammarFromContribution(name); |
| } |
| |
| public static List<String> getAvailableGrammars() { |
| List<String> grammars = new ArrayList<String>(); |
| |
| // search plug-in contribution |
| IConfigurationElement[] contributions = Platform.getExtensionRegistry().getConfigurationElementsFor(EXTENSION_POINT_ID); |
| for (int i = 0; i < contributions.length; i++) { |
| String nameAttribute = contributions[i].getAttribute(ATTRIBUTE_NAME); |
| |
| if (nameAttribute != null && !nameAttribute.isEmpty()) { |
| grammars.add(nameAttribute); |
| } |
| } |
| |
| return grammars; |
| } |
| |
| private static IGrammar getGrammarWithLua51GrammarFallback(String name) { |
| // check the grammar is available |
| try { |
| IGrammar defaultGrammar = getAvailableGrammar(name); |
| if (defaultGrammar != null) |
| return defaultGrammar; |
| } catch (CoreException e) { |
| String message = String.format("The default grammar %s is not available.", name);//$NON-NLS-1$ |
| Activator.logWarning(message, e); |
| } |
| |
| // use grammar 5.1 by default |
| try { |
| return getAvailableGrammar("lua-5.1"); //$NON-NLS-1$ |
| } catch (CoreException e) { |
| String message = "The lua 5.1 grammar must be available. Check if you have the org.eclise.ldt.support.lua51 installed!"; //$NON-NLS-1$ |
| Activator.logError(message, e); |
| throw new RuntimeException(message, e); |
| } |
| } |
| |
| public static IGrammar getDefaultGrammar() { |
| // get in preference the default grammar |
| ScopedPreferenceStore preferenceStore = new ScopedPreferenceStore(InstanceScope.INSTANCE, LuaLanguageToolkit.getDefault() |
| .getPreferenceQualifier()); |
| String defaultGrammarID = preferenceStore.getString(PreferenceInitializer.GRAMMAR_DEFAULT_ID); |
| |
| return getGrammarWithLua51GrammarFallback(defaultGrammarID); |
| } |
| |
| public static IGrammar getDefaultGrammarFor(IProject project) { |
| // Create context |
| IScopeContext[] context; |
| if (project != null) |
| context = new IScopeContext[] { new ProjectScope(project), InstanceScope.INSTANCE }; |
| else |
| context = new IScopeContext[] { InstanceScope.INSTANCE }; |
| |
| // Get grammarName |
| String grammarName = Platform.getPreferencesService().getString(LuaLanguageToolkit.getDefault().getPreferenceQualifier(), |
| PreferenceInitializer.GRAMMAR_DEFAULT_ID, PreferenceInitializer.GRAMMAR_DEFAULT_ID_VALUE, context); |
| |
| // Get grammar |
| return getGrammarWithLua51GrammarFallback(grammarName); |
| } |
| |
| public static IGrammar getDefaultGrammarFor(LuaExecutionEnvironment ee) { |
| // if ee has no grammar defined use the default one |
| if (ee == null || ee.getLuaGrammar() == null) |
| return getDefaultGrammar(); |
| |
| // check the grammar is available |
| try { |
| IGrammar availableGrammar = getAvailableGrammar(ee.getLuaGrammar()); |
| if (availableGrammar != null) |
| return availableGrammar; |
| } catch (CoreException e) { |
| String message = String.format( |
| "The default grammar %s for the execution environment %s is not available.", ee.getLuaGrammar(), ee.getEEIdentifier());//$NON-NLS-1$ |
| Activator.logWarning(message, e); |
| // use default grammar instead... |
| } |
| return getDefaultGrammar(); |
| } |
| } |