mirror of
https://github.com/peterdell/wudsn-ide.git
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245 lines
7.7 KiB
Java
245 lines
7.7 KiB
Java
/**
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* Copyright (C) 2009 - 2019 <a href="https://www.wudsn.com" target="_top">Peter Dell</a>
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*
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* This file is part of WUDSN IDE.
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*
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* WUDSN IDE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* WUDSN IDE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with WUDSN IDE. If not, see <http://www.gnu.org/licenses/>.
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*/
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package com.wudsn.ide.asm.compiler;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.List;
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import java.util.Map;
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import java.util.TreeMap;
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import org.eclipse.core.runtime.CoreException;
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import org.eclipse.core.runtime.IConfigurationElement;
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import org.eclipse.core.runtime.IExtension;
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import org.eclipse.core.runtime.IExtensionPoint;
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import org.eclipse.core.runtime.IExtensionRegistry;
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import org.eclipse.core.runtime.Platform;
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import com.wudsn.ide.asm.CPU;
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import com.wudsn.ide.asm.Hardware;
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import com.wudsn.ide.asm.compiler.syntax.CompilerSyntax;
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/**
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* Registry for compilers, based on the extension points
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* {@value CompilerRegistry#COMPILERS}.
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*
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* @author Peter Dell
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*
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*/
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public final class CompilerRegistry {
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/**
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* The id of the extension point which provides the compilers.
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*/
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private static final String COMPILERS = "com.wudsn.ide.asm.compilers";
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/**
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* The registered compiler definition.
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*/
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private List<CompilerDefinition> compilerDefinitionList;
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/**
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* The cached map of compiler instances.
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*/
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private Map<String, Compiler> compilerMap;
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/**
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* Creation is public.
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*/
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public CompilerRegistry() {
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compilerDefinitionList = Collections.emptyList();
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compilerMap = Collections.emptyMap();
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}
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/**
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* Initializes the list of available compilers.
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*/
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public void init() {
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compilerDefinitionList = new ArrayList<CompilerDefinition>();
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compilerMap = new TreeMap<String, Compiler>();
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IExtensionRegistry extensionRegistry = Platform.getExtensionRegistry();
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IExtensionPoint extensionPoint = extensionRegistry
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.getExtensionPoint(COMPILERS);
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if (extensionPoint == null) {
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throw new IllegalStateException("Extension point '" + COMPILERS
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+ "' is not defined.");
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}
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IExtension[] extensions = extensionPoint.getExtensions();
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for (IExtension extension : extensions) {
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IConfigurationElement[] configurationElements = extension
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.getConfigurationElements();
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for (IConfigurationElement configurationElement : configurationElements) {
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try {
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CompilerDefinition compilerDefinition;
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compilerDefinition = new CompilerDefinition();
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compilerDefinition.setId(configurationElement
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.getAttribute("id"));
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compilerDefinition.setName(configurationElement
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.getAttribute("name"));
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compilerDefinition.setClassName(configurationElement
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.getAttribute("class"));
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compilerDefinition.setHelpFilePaths(configurationElement
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.getAttribute("helpFilePaths"));
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compilerDefinition.setHomePageURL(configurationElement
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.getAttribute("homePageURL"));
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compilerDefinition
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.setDefaultParameters(configurationElement
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.getAttribute("defaultParameters"));
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configurationElement.getChildren("supportedCPU");
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IConfigurationElement[] supportedCPUArray;
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supportedCPUArray = configurationElement
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.getChildren("supportedCPU");
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List<CPU> supportedCPUs = new ArrayList<CPU>(
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supportedCPUArray.length);
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for (IConfigurationElement supportedCPU : supportedCPUArray) {
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supportedCPUs.add(CPU.valueOf(supportedCPU
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.getAttribute("cpu")));
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}
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supportedCPUs = Collections.unmodifiableList(supportedCPUs);
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compilerDefinition.setSupportedCPUs(supportedCPUs);
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compilerDefinition.setDefaultHardware(Hardware
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.valueOf(configurationElement
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.getAttribute("defaultHardware")));
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compilerDefinitionList.add(compilerDefinition);
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addCompiler(configurationElement, compilerDefinition);
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} catch (RuntimeException ex) {
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throw new RuntimeException(
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"Error during registration of compiler '"
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+ configurationElement.getAttribute("id")
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+ "'.", ex);
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}
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}
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}
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compilerDefinitionList = new ArrayList<CompilerDefinition>(
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compilerDefinitionList);
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Collections.sort(compilerDefinitionList);
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compilerDefinitionList = Collections
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.unmodifiableList(compilerDefinitionList);
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compilerMap = Collections.unmodifiableMap(compilerMap);
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}
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/**
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* Adds a new compiler.
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*
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* @param configurationElement
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* The configuration element used as class instance factory, not
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* <code>null</code>.
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*
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* @param compilerDefinition
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* The compiler definition, not <code>null</code>.
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*/
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private void addCompiler(IConfigurationElement configurationElement,
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CompilerDefinition compilerDefinition) {
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if (configurationElement == null) {
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throw new IllegalArgumentException(
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"Parameter 'configurationElement' must not be null.");
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}
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if (compilerDefinition == null) {
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throw new IllegalArgumentException(
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"Parameter 'compilerDefinition' must not be null.");
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}
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String id = compilerDefinition.getId();
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Compiler compiler;
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try {
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// The class loading must be delegated to the framework.
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compiler = (Compiler) configurationElement
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.createExecutableExtension("class");
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} catch (CoreException ex) {
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throw new RuntimeException(
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"Cannot create compiler instance for id '" + id + "'.", ex);
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}
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// Build the list of common and specific syntax definition files.
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List<Class<?>> compilerClasses = new ArrayList<Class<?>>(2);
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compilerClasses.add(compiler.getClass());
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compilerClasses.add(Compiler.class);
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CompilerSyntax syntax;
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syntax = new CompilerSyntax(id);
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syntax.loadXMLData(compilerClasses);
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compilerDefinition.setSyntax(syntax);
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compiler.setDefinition(compilerDefinition);
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compiler = compilerMap.put(id, compiler);
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if (compiler != null) {
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throw new RuntimeException("Compiler id '" + id
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+ "' is already registered to class '"
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+ compiler.getClass().getName() + "'.");
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}
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}
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/**
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* Gets the unmodifiable list of compiler definitions, sorted by their id.
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*
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*
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* @return The unmodifiable list of compiler definitions, sorted by their
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* id, may be empty, not <code>null</code>
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*
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* @since 1.6.1
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*/
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public List<CompilerDefinition> getCompilerDefinitions() {
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return compilerDefinitionList;
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}
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/**
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* Gets the compiler for a given id. Instances of compiler are stateless
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* singletons within the plugin.
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*
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* @param compilerId
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* The compiler id, not <code>null</code>.
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*
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* @return The compiler, not <code>null</code>.
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*/
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public Compiler getCompiler(String compilerId) {
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if (compilerId == null) {
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throw new IllegalArgumentException(
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"Parameter 'compilerId' must not be null.");
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}
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Compiler result;
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synchronized (compilerMap) {
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result = compilerMap.get(compilerId);
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}
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if (result == null) {
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throw new IllegalArgumentException("Unknown compiler id '"
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+ compilerId + "'.");
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}
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return result;
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}
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}
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