wudsn-ide/com.wudsn.ide.lng/src/com/wudsn/ide/lng/compiler/CompilerRegistry.java

277 lines
9.7 KiB
Java

/**
* Copyright (C) 2009 - 2021 <a href="https://www.wudsn.com" target="_top">Peter Dell</a>
*
* This file is part of WUDSN IDE.
*
* WUDSN IDE is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* WUDSN IDE 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 for more details.
*
* You should have received a copy of the GNU General Public License
* along with WUDSN IDE. If not, see <http://www.gnu.org/licenses/>.
*/
package com.wudsn.ide.lng.compiler;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.TreeMap;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IConfigurationElement;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionPoint;
import org.eclipse.core.runtime.IExtensionRegistry;
import org.eclipse.core.runtime.Platform;
import com.wudsn.ide.base.hardware.Hardware;
import com.wudsn.ide.lng.Language;
import com.wudsn.ide.lng.Target;
import com.wudsn.ide.lng.compiler.syntax.CompilerSyntax;
import com.wudsn.ide.lng.compiler.CompilerDefinition.HelpDocument;
/**
* Registry for compilers, based on the extension points
* {@value CompilerRegistry#COMPILERS}.
*
* @author Peter Dell
*
*/
public final class CompilerRegistry {
/**
* The id of the extension point which provides the compilers.
*/
private static final String COMPILERS = "com.wudsn.ide.lng.compilers";
/**
* The registered compiler definition.
*/
private List<CompilerDefinition> compilerDefinitionList;
/**
* The cached map of compiler instances.
*/
private Map<String, Compiler> compilerMap;
/**
* Creation is public.
*/
public CompilerRegistry() {
compilerDefinitionList = Collections.emptyList();
compilerMap = Collections.emptyMap();
}
/**
* Initializes the list of available compilers.
*/
public void init() {
compilerDefinitionList = new ArrayList<CompilerDefinition>();
compilerMap = new TreeMap<String, Compiler>();
IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
IExtensionPoint extensionPoint = extensionRegistry.getExtensionPoint(COMPILERS);
if (extensionPoint == null) {
throw new IllegalStateException("Extension point '" + COMPILERS + "' is not defined.");
}
IExtension[] extensions = extensionPoint.getExtensions();
for (IExtension extension : extensions) {
IConfigurationElement[] configurationElements = extension.getConfigurationElements();
for (IConfigurationElement configurationElement : configurationElements) {
try {
CompilerDefinition compilerDefinition;
compilerDefinition = new CompilerDefinition();
compilerDefinition.setLanguage(configurationElement.getAttribute("language"));
compilerDefinition.setId(configurationElement.getAttribute("id"));
compilerDefinition.setName(configurationElement.getAttribute("name"));
compilerDefinition.setClassName(configurationElement.getAttribute("class"));
var helpDocumentsArray = configurationElement.getChildren("helpDocument");
var helpDocuments = new ArrayList<HelpDocument>(helpDocumentsArray.length);
for (var helpDocument : helpDocumentsArray) {
helpDocuments.add(new HelpDocument(helpDocument.getAttribute("path"),
helpDocument.getAttribute("language")));
}
compilerDefinition.setHelpDocuments(Collections.unmodifiableList(helpDocuments));
compilerDefinition.setHomePageURL(configurationElement.getAttribute("homePageURL"));
compilerDefinition.setDefaultParameters(configurationElement.getAttribute("defaultParameters"));
var supportedTargetsArray = configurationElement.getChildren("supportedTarget");
var supportedTargets = new ArrayList<Target>(supportedTargetsArray.length);
for (var supportedTarget : supportedTargetsArray) {
supportedTargets.add(Target.valueOf(supportedTarget.getAttribute("target")));
}
compilerDefinition.setSupportedTargets(Collections.unmodifiableList(supportedTargets));
compilerDefinition
.setDefaultHardware(Hardware.valueOf(configurationElement.getAttribute("defaultHardware")));
compilerDefinitionList.add(compilerDefinition);
addCompiler(configurationElement, compilerDefinition);
} catch (RuntimeException ex) {
throw new RuntimeException(
"Error during registration of compiler '" + configurationElement.getAttribute("id") + "'.",
ex);
}
}
}
compilerDefinitionList = new ArrayList<CompilerDefinition>(compilerDefinitionList);
Collections.sort(compilerDefinitionList);
compilerDefinitionList = Collections.unmodifiableList(compilerDefinitionList);
compilerMap = Collections.unmodifiableMap(compilerMap);
}
/**
* Adds a new compiler.
*
* @param configurationElement The configuration element used as class instance
* factory, not <code>null</code>.
*
* @param compilerDefinition The compiler definition, not <code>null</code>.
*/
private void addCompiler(IConfigurationElement configurationElement, CompilerDefinition compilerDefinition) {
if (configurationElement == null) {
throw new IllegalArgumentException("Parameter 'configurationElement' must not be null.");
}
if (compilerDefinition == null) {
throw new IllegalArgumentException("Parameter 'compilerDefinition' must not be null.");
}
String key = compilerDefinition.getKey();
Compiler compiler;
try {
// The class loading must be delegated to the framework.
compiler = (Compiler) configurationElement.createExecutableExtension("class");
} catch (CoreException ex) {
throw new RuntimeException("Cannot create compiler instance for key '" + key + "'.", ex);
}
// Build the list of common and specific syntax definition files.
List<Class<?>> compilerClasses = new ArrayList<Class<?>>(2);
compilerClasses.add(compiler.getClass());
compilerClasses.add(Compiler.class);
CompilerSyntax syntax;
syntax = new CompilerSyntax(key);
syntax.loadXMLData(compilerClasses);
compilerDefinition.setSyntax(syntax);
compiler.setDefinition(compilerDefinition);
compiler = compilerMap.put(key, compiler);
if (compiler != null) {
throw new RuntimeException("Compiler id '" + key + "' is already registered to class '"
+ compiler.getClass().getName() + "'.");
}
}
/**
* Gets the unmodifiable list of compiler definitions for a language, sorted by
* their key.
*
* @param language The language, not <code>null</code>.
* @return The unmodifiable list of compiler definitions, sorted by their key,
* may be empty, not <code>null</code>
*
* @since 1.6.1
*/
public List<CompilerDefinition> getCompilerDefinitions(Language language) {
if (language == null) {
throw new IllegalArgumentException("Parameter 'language' must not be null.");
}
List<CompilerDefinition> result = new ArrayList<CompilerDefinition>();
for (CompilerDefinition compilerDefinition : compilerDefinitionList) {
if (compilerDefinition.getLanguage().equals(language)) {
result.add(compilerDefinition);
}
}
return Collections.unmodifiableList(result);
}
/**
* Gets the compiler for a given class. Instances of compiler are stateless
* singletons within the plugin.
*
* @param key The compiler key, not <code>null</code>.
*
* @return The compiler, not <code>null</code>.
*/
public Compiler getCompilerByEditorClassName(String editorClassName) {
if (editorClassName == null) {
throw new IllegalArgumentException("Parameter 'editorClassName' must not be null.");
}
final String SUFFIX = "Editor";
int index = editorClassName.lastIndexOf(SUFFIX);
if (index < 0 || index + SUFFIX.length() != editorClassName.length()) {
throw new IllegalArgumentException("Parameter 'editorClassName' must end with 'Editor'.");
}
String compilerClassName = editorClassName.substring(0, index) + "Compiler";
synchronized (compilerMap) {
for (Compiler compiler : compilerMap.values()) {
if (compiler.getClass().getName().equals(compilerClassName)) {
return compiler;
}
}
}
throw new IllegalArgumentException("Unknown compiler class '" + compilerClassName + "'.");
}
/**
* Gets the compiler for a given key. Instances of compiler are stateless
* singletons within the plugin.
*
* @param key The compiler key, not <code>null</code>.
*
* @return The compiler, not <code>null</code>.
*/
private Compiler getCompilerByKey(String key) {
if (key == null) {
throw new IllegalArgumentException("Parameter 'key' must not be null.");
}
Compiler result;
synchronized (compilerMap) {
result = compilerMap.get(key);
}
if (result == null) {
throw new IllegalArgumentException("Unknown compiler id '" + key + "'.");
}
return result;
}
/**
* Gets the compiler for a given language and compiler Id
*
* @param language The language, not <code>null</code>.
* @param compilerId The compiler Id, not empty and not <code>null</code>.
*
* @return The compiler definition, not <code>null</code>.
*/
public CompilerDefinition getCompilerDefinitionById(Language language, String compilerId) {
var key = CompilerDefinition.getKey(language, compilerId);
return getCompilerByKey(key).getDefinition();
}
}