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InitCommand remains for now, so that you can @Grab a jar with custom commands if you so choose. Contributes to gh-212pull/234/head
6 changed files with 3 additions and 741 deletions
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|
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/* |
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* Copyright 2012-2013 the original author or authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.springframework.boot.cli.command; |
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import groovy.lang.Closure; |
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import groovy.lang.GroovyObject; |
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import java.util.Collection; |
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import java.util.Collections; |
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import org.springframework.boot.cli.Command; |
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import org.springframework.boot.cli.OptionHelp; |
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/** |
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* {@link Command} to run a Groovy script. |
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* |
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* @author Dave Syer |
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*/ |
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public class ScriptCommand implements Command { |
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private Object main; |
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private String defaultName; |
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public ScriptCommand(String name, Object main) { |
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this.main = main; |
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this.defaultName = name; |
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} |
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@Override |
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public String getName() { |
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if (this.main instanceof Command) { |
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return ((Command) this.main).getName(); |
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} |
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else if (this.main instanceof GroovyObject) { |
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GroovyObject object = (GroovyObject) this.main; |
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if (object.getMetaClass().hasProperty(object, "name") != null) { |
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return (String) object.getProperty("name"); |
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} |
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} |
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return this.defaultName; |
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} |
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@Override |
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public boolean isOptionCommand() { |
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return false; |
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} |
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@Override |
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public String getDescription() { |
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if (this.main instanceof Command) { |
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return ((Command) this.main).getDescription(); |
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} |
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return this.defaultName; |
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} |
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@Override |
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public String getHelp() { |
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if (this.main instanceof OptionHandler) { |
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return ((OptionHandler) this.main).getHelp(); |
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} |
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if (this.main instanceof Command) { |
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return ((Command) this.main).getHelp(); |
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} |
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return null; |
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} |
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@Override |
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public Collection<OptionHelp> getOptionsHelp() { |
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if (this.main instanceof OptionHandler) { |
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return ((OptionHandler) this.main).getOptionsHelp(); |
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} |
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if (this.main instanceof Command) { |
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return ((Command) this.main).getOptionsHelp(); |
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} |
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return Collections.emptyList(); |
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} |
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@Override |
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public void run(String... args) throws Exception { |
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if (this.main instanceof Command) { |
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((Command) this.main).run(args); |
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} |
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else if (this.main instanceof OptionHandler) { |
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((OptionHandler) this.main).run(args); |
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} |
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else if (this.main instanceof Closure) { |
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((Closure<?>) this.main).call((Object[]) args); |
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} |
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} |
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@Override |
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public String getUsageHelp() { |
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if (this.main instanceof Command) { |
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return ((Command) this.main).getDescription(); |
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} |
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return "[options] <args>"; |
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} |
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public static ScriptCommand command(Class<?> type) { |
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Object main = null; |
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try { |
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main = type.newInstance(); |
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} |
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catch (Exception ex) { |
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// Inner classes and closures will not be instantiatable
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return null; |
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} |
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if (main instanceof Command) { |
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return new ScriptCommand(type.getSimpleName(), main); |
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} |
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else if (main instanceof OptionHandler) { |
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((OptionHandler) main).options(); |
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return new ScriptCommand(type.getSimpleName(), main); |
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} |
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return null; |
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} |
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} |
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/* |
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* Copyright 2012-2013 the original author or authors. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package org.springframework.boot.cli.command; |
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import java.lang.reflect.Modifier; |
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import java.util.ArrayList; |
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import java.util.List; |
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import joptsimple.OptionParser; |
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import joptsimple.OptionSet; |
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import joptsimple.OptionSpecBuilder; |
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import org.codehaus.groovy.ast.ClassCodeVisitorSupport; |
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import org.codehaus.groovy.ast.ClassHelper; |
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import org.codehaus.groovy.ast.ClassNode; |
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import org.codehaus.groovy.ast.InnerClassNode; |
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import org.codehaus.groovy.ast.Parameter; |
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import org.codehaus.groovy.ast.PropertyNode; |
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import org.codehaus.groovy.ast.expr.ArgumentListExpression; |
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import org.codehaus.groovy.ast.expr.ClosureExpression; |
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import org.codehaus.groovy.ast.expr.ConstantExpression; |
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import org.codehaus.groovy.ast.expr.ConstructorCallExpression; |
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import org.codehaus.groovy.ast.expr.Expression; |
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import org.codehaus.groovy.ast.expr.MapExpression; |
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import org.codehaus.groovy.ast.expr.MethodCallExpression; |
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import org.codehaus.groovy.ast.stmt.BlockStatement; |
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import org.codehaus.groovy.ast.stmt.EmptyStatement; |
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import org.codehaus.groovy.ast.stmt.ExpressionStatement; |
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import org.codehaus.groovy.classgen.GeneratorContext; |
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import org.codehaus.groovy.control.CompilationFailedException; |
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import org.codehaus.groovy.control.CompilePhase; |
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import org.codehaus.groovy.control.SourceUnit; |
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import org.codehaus.groovy.control.customizers.CompilationCustomizer; |
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import org.codehaus.groovy.control.customizers.ImportCustomizer; |
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import org.springframework.boot.cli.Command; |
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import org.springframework.boot.cli.command.InitCommand.Commands; |
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/** |
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* Customizer for the compilation of CLI script commands. |
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* |
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* @author Dave Syer |
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*/ |
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public class ScriptCompilationCustomizer extends CompilationCustomizer { |
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public ScriptCompilationCustomizer() { |
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super(CompilePhase.CONVERSION); |
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} |
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@Override |
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public void call(SourceUnit source, GeneratorContext context, ClassNode classNode) |
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throws CompilationFailedException { |
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findCommands(source, classNode); |
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addImports(source, context, classNode); |
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} |
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/** |
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* If the script defines a block in this form: |
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* |
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* <pre> |
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* command("foo") { args -> |
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* println "Command foo called with args: ${args}" |
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* } |
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* </pre> |
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* |
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* Then the block is taken and used to create a Command named "foo" that runs the |
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* closure when it is executed. |
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* |
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* If you want to declare options (and provide help text), use this form: |
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* |
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* <pre> |
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* command("foo") { |
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* |
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* options { |
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* option "foo", "My Foo option" |
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* option "bar", "Bar has a value" withOptionalArg() ofType Integer |
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* } |
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* |
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* run { options -> |
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* println "Command foo called with bar=${options.valueOf('bar')}" |
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* } |
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* |
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* } |
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* </pre> |
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* |
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* In this case the "options" block is taken and used to override the |
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* {@link OptionHandler#options()} method. Each "option" is a call to |
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* {@link OptionHandler#option(String, String)}, and hence returns an |
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* {@link OptionSpecBuilder}. Makes a nice readable DSL for adding options. |
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* |
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* @param source the source node |
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* @param classNode the class node to manipulate |
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*/ |
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private void findCommands(SourceUnit source, ClassNode classNode) { |
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CommandVisitor visitor = new CommandVisitor(source, classNode); |
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classNode.visitContents(visitor); |
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visitor.addFactory(classNode); |
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} |
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/** |
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* Add imports to the class node to make writing simple commands easier. No need to |
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* import {@link OptionParser}, {@link OptionSet}, {@link Command} or |
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* {@link OptionHandler}. |
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* |
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* @param source the source node |
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* @param context the current context |
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* @param classNode the class node to manipulate |
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*/ |
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private void addImports(SourceUnit source, GeneratorContext context, |
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ClassNode classNode) { |
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ImportCustomizer importCustomizer = new ImportCustomizer(); |
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importCustomizer.addImports("joptsimple.OptionParser", "joptsimple.OptionSet", |
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OptionParsingCommand.class.getCanonicalName(), |
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Command.class.getCanonicalName(), OptionHandler.class.getCanonicalName()); |
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importCustomizer.call(source, context, classNode); |
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} |
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/** |
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* Helper to extract a Commands instance (adding that interface to the current class
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* node) so individual commands can be registered with the CLI. |
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* |
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* @author Dave Syer |
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*/ |
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private static class CommandVisitor extends ClassCodeVisitorSupport { |
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private SourceUnit source; |
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private MapExpression closures = new MapExpression(); |
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private MapExpression options = new MapExpression(); |
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private List<ExpressionStatement> statements = new ArrayList<ExpressionStatement>(); |
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private ExpressionStatement statement; |
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private ClassNode classNode; |
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public CommandVisitor(SourceUnit source, ClassNode classNode) { |
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this.source = source; |
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this.classNode = classNode; |
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} |
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private boolean hasCommands() { |
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return !this.closures.getMapEntryExpressions().isEmpty(); |
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} |
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private void addFactory(ClassNode classNode) { |
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if (!hasCommands()) { |
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return; |
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} |
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classNode.addInterface(ClassHelper.make(Commands.class)); |
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classNode.addProperty(new PropertyNode("commands", Modifier.PUBLIC |
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| Modifier.FINAL, ClassHelper.MAP_TYPE.getPlainNodeReference(), |
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classNode, this.closures, null, null)); |
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classNode.addProperty(new PropertyNode("options", Modifier.PUBLIC |
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| Modifier.FINAL, ClassHelper.MAP_TYPE.getPlainNodeReference(), |
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classNode, this.options, null, null)); |
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} |
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@Override |
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protected SourceUnit getSourceUnit() { |
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return this.source; |
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} |
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@Override |
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public void visitBlockStatement(BlockStatement block) { |
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this.statements.clear(); |
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super.visitBlockStatement(block); |
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block.getStatements().removeAll(this.statements); |
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} |
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@Override |
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public void visitExpressionStatement(ExpressionStatement statement) { |
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this.statement = statement; |
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super.visitExpressionStatement(statement); |
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} |
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@Override |
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public void visitMethodCallExpression(MethodCallExpression call) { |
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Expression methodCall = call.getMethod(); |
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if (methodCall instanceof ConstantExpression) { |
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ConstantExpression method = (ConstantExpression) methodCall; |
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if ("command".equals(method.getValue())) { |
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ArgumentListExpression arguments = (ArgumentListExpression) call |
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.getArguments(); |
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this.statements.add(this.statement); |
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ConstantExpression name = (ConstantExpression) arguments |
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.getExpression(0); |
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Expression expression = arguments.getExpression(1); |
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if (expression instanceof ClosureExpression) { |
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ClosureExpression closure = (ClosureExpression) expression; |
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ActionExtractorVisitor action = new ActionExtractorVisitor( |
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this.source, this.classNode, name.getText()); |
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closure.getCode().visit(action); |
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if (action.hasOptions()) { |
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this.options.addMapEntryExpression(name, action.getOptions()); |
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expression = action.getAction(); |
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} |
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else { |
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expression = new ClosureExpression( |
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new Parameter[] { new Parameter( |
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ClassHelper.make(String[].class), "args") }, |
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closure.getCode()); |
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} |
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this.closures.addMapEntryExpression(name, expression); |
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} |
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} |
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} |
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} |
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|
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} |
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|
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/** |
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* Helper to pull out options and action closures from a command declaration (if they |
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* are there). |
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* |
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* @author Dave Syer |
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*/ |
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private static class ActionExtractorVisitor extends ClassCodeVisitorSupport { |
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private static final Parameter[] OPTIONS_PARAMETERS = new Parameter[] { new Parameter( |
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ClassHelper.make(OptionSet.class), "options") }; |
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private SourceUnit source; |
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private ClassNode classNode; |
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private Expression options; |
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private ClosureExpression action; |
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private String name; |
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public ActionExtractorVisitor(SourceUnit source, ClassNode classNode, String name) { |
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this.source = source; |
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this.classNode = classNode; |
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this.name = name; |
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} |
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|
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@Override |
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protected SourceUnit getSourceUnit() { |
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return this.source; |
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} |
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public boolean hasOptions() { |
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return this.options != null; |
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} |
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|
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public Expression getOptions() { |
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return this.options; |
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} |
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|
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public ClosureExpression getAction() { |
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return this.action != null ? this.action : new ClosureExpression( |
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OPTIONS_PARAMETERS, new EmptyStatement()); |
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} |
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|
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@Override |
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public void visitMethodCallExpression(MethodCallExpression call) { |
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Expression methodCall = call.getMethod(); |
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if (methodCall instanceof ConstantExpression) { |
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ConstantExpression method = (ConstantExpression) methodCall; |
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if ("options".equals(method.getValue())) { |
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ArgumentListExpression arguments = (ArgumentListExpression) call |
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.getArguments(); |
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Expression expression = arguments.getExpression(0); |
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if (expression instanceof ClosureExpression) { |
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ClosureExpression closure = (ClosureExpression) expression; |
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InnerClassNode type = new InnerClassNode(this.classNode, |
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this.classNode.getName() + "$" + this.name |
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+ "OptionHandler", Modifier.PUBLIC, |
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ClassHelper.make(OptionHandler.class)); |
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type.addMethod("options", Modifier.PROTECTED, |
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ClassHelper.VOID_TYPE, Parameter.EMPTY_ARRAY, |
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ClassNode.EMPTY_ARRAY, closure.getCode()); |
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this.classNode.getModule().addClass(type); |
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this.options = new ConstructorCallExpression(type, |
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ArgumentListExpression.EMPTY_ARGUMENTS); |
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} |
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} |
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else if ("run".equals(method.getValue())) { |
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ArgumentListExpression arguments = (ArgumentListExpression) call |
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.getArguments(); |
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Expression expression = arguments.getExpression(0); |
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if (expression instanceof ClosureExpression) { |
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ClosureExpression closure = (ClosureExpression) expression; |
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this.action = new ClosureExpression(OPTIONS_PARAMETERS, |
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closure.getCode()); |
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} |
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} |
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} |
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} |
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} |
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|
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} |
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@ -1,77 +0,0 @@
@@ -1,77 +0,0 @@
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/* |
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* Copyright 2012-2013 the original author or authors. |
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* |
||||
* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
||||
* You may obtain a copy of the License at |
||||
* |
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* http://www.apache.org/licenses/LICENSE-2.0
|
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* |
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* Unless required by applicable law or agreed to in writing, software |
||||
* distributed under the License is distributed on an "AS IS" BASIS, |
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
||||
* limitations under the License. |
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*/ |
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|
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package org.springframework.boot.cli.command; |
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|
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import org.junit.After; |
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import org.junit.Before; |
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import org.junit.Rule; |
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import org.junit.Test; |
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import org.springframework.boot.OutputCapture; |
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import org.springframework.boot.cli.SpringCli; |
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|
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import static org.junit.Assert.assertTrue; |
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/** |
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* @author Dave Syer |
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*/ |
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public class ScriptCommandTests { |
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@Rule |
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public OutputCapture output = new OutputCapture(); |
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public static boolean executed = false; |
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private SpringCli cli; |
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private InitCommand init; |
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|
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private ClassLoader classLoader; |
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|
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@Before |
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public void init() { |
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this.classLoader = Thread.currentThread().getContextClassLoader(); |
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this.cli = new SpringCli(); |
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this.init = new InitCommand(this.cli); |
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executed = false; |
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} |
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|
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@After |
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public void close() { |
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Thread.currentThread().setContextClassLoader(this.classLoader); |
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} |
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|
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@Test |
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public void command() throws Exception { |
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this.init.run("src/test/resources/commands/command.groovy"); |
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this.cli.find("foo").run("Foo"); |
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assertTrue(this.output.toString().contains("Hello Foo")); |
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} |
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|
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@Test |
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public void handler() throws Exception { |
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this.init.run("src/test/resources/commands/handler.groovy"); |
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this.cli.find("foo").run("Foo", "--foo=bar"); |
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assertTrue(this.output.toString().contains("Hello [Foo]")); |
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} |
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|
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@Test |
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public void options() throws Exception { |
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this.init.run("src/test/resources/commands/options.groovy"); |
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this.cli.find("foo").run("Foo", "--foo=bar"); |
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assertTrue(this.output.toString().contains("Hello Foo")); |
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} |
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|
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} |
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@ -1,156 +0,0 @@
@@ -1,156 +0,0 @@
|
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/* |
||||
* Copyright 2012-2013 the original author or authors. |
||||
* |
||||
* Licensed under the Apache License, Version 2.0 (the "License"); |
||||
* you may not use this file except in compliance with the License. |
||||
* You may obtain a copy of the License at |
||||
* |
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
* |
||||
* Unless required by applicable law or agreed to in writing, software |
||||
* distributed under the License is distributed on an "AS IS" BASIS, |
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
||||
* See the License for the specific language governing permissions and |
||||
* limitations under the License. |
||||
*/ |
||||
|
||||
package org.springframework.boot.cli.command; |
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|
||||
import groovy.lang.Closure; |
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|
||||
import java.util.List; |
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import java.util.Map; |
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|
||||
import org.junit.Before; |
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import org.junit.Rule; |
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import org.junit.Test; |
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import org.springframework.boot.OutputCapture; |
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import org.springframework.boot.cli.Command; |
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import org.springframework.boot.cli.command.InitCommand.Commands; |
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import org.springframework.boot.cli.compiler.GroovyCompiler; |
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import org.springframework.boot.cli.compiler.GroovyCompilerConfiguration; |
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import org.springframework.boot.cli.compiler.GroovyCompilerScope; |
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import org.springframework.boot.cli.compiler.RepositoryConfigurationFactory; |
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import org.springframework.boot.cli.compiler.grape.RepositoryConfiguration; |
||||
|
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import static org.junit.Assert.assertEquals; |
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import static org.junit.Assert.assertTrue; |
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|
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/** |
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* @author Dave Syer |
||||
*/ |
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public class ScriptCompilationCustomizerTests { |
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|
||||
private TestGroovyCompilerConfiguration configuration = new TestGroovyCompilerConfiguration(); |
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private GroovyCompiler compiler = new GroovyCompiler(this.configuration); |
||||
|
||||
@Rule |
||||
public OutputCapture output = new OutputCapture(); |
||||
|
||||
@Before |
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public void init() { |
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this.compiler.addCompilationCustomizers(new ScriptCompilationCustomizer()); |
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} |
||||
|
||||
@Test |
||||
public void simpleCompile() throws Exception { |
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Class<?>[] types = this.compiler |
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.compile("src/test/resources/scripts/command.groovy"); |
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Class<?> main = types[0]; |
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assertEquals("org.test.command.TestCommand", main.getName()); |
||||
assertTrue(Command.class.isAssignableFrom(main)); |
||||
} |
||||
|
||||
@Test |
||||
public void addsOptionHandler() throws Exception { |
||||
Class<?>[] types = this.compiler.compile("classpath:/scripts/handler.groovy"); |
||||
Class<?> main = types[0]; |
||||
assertTrue(OptionHandler.class.isAssignableFrom(main)); |
||||
} |
||||
|
||||
@Test |
||||
public void addsCommands() throws Exception { |
||||
Class<?>[] types = this.compiler.compile("classpath:scripts/commands.groovy"); |
||||
Class<?> main = types[0]; |
||||
assertTrue(Commands.class.isAssignableFrom(main)); |
||||
} |
||||
|
||||
@Test |
||||
public void closureWithStringArgs() throws Exception { |
||||
Class<?>[] types = this.compiler.compile("classpath:scripts/commands.groovy"); |
||||
Class<?> main = types[0]; |
||||
Map<String, Closure<?>> commands = ((Commands) main.newInstance()).getCommands(); |
||||
assertEquals(1, commands.size()); |
||||
assertEquals("foo", commands.keySet().iterator().next()); |
||||
Closure<?> closure = commands.values().iterator().next(); |
||||
closure.call("foo", "bar"); |
||||
assertTrue(this.output.toString().contains("Hello Command")); |
||||
} |
||||
|
||||
@Test |
||||
public void closureWithEmptyArgs() throws Exception { |
||||
Class<?>[] types = this.compiler |
||||
.compile("src/test/resources/scripts/commands.groovy"); |
||||
Class<?> main = types[0]; |
||||
Map<String, Closure<?>> commands = ((Commands) main.newInstance()).getCommands(); |
||||
assertEquals(1, commands.size()); |
||||
assertEquals("foo", commands.keySet().iterator().next()); |
||||
Closure<?> closure = commands.values().iterator().next(); |
||||
closure.call(); |
||||
assertTrue(this.output.toString().contains("Hello Command")); |
||||
} |
||||
|
||||
@Test |
||||
public void closureAndOptionsDefined() throws Exception { |
||||
Class<?>[] types = this.compiler |
||||
.compile("src/test/resources/scripts/options.groovy"); |
||||
Class<?> main = types[0]; |
||||
Commands commands = (Commands) main.newInstance(); |
||||
Map<String, Closure<?>> closures = commands.getCommands(); |
||||
assertEquals(1, closures.size()); |
||||
assertEquals("foo", closures.keySet().iterator().next()); |
||||
final Closure<?> closure = closures.values().iterator().next(); |
||||
Map<String, OptionHandler> options = commands.getOptions(); |
||||
assertEquals(1, options.size()); |
||||
OptionHandler handler = options.get("foo"); |
||||
handler.setClosure(closure); |
||||
handler.run("--foo=bar", "--bar=blah", "spam"); |
||||
assertTrue(this.output.toString().contains("Hello [spam]: true blah")); |
||||
} |
||||
|
||||
private static class TestGroovyCompilerConfiguration implements |
||||
GroovyCompilerConfiguration { |
||||
|
||||
@Override |
||||
public GroovyCompilerScope getScope() { |
||||
return GroovyCompilerScope.EXTENSION; |
||||
} |
||||
|
||||
@Override |
||||
public boolean isGuessImports() { |
||||
return true; |
||||
} |
||||
|
||||
@Override |
||||
public boolean isGuessDependencies() { |
||||
return false; |
||||
} |
||||
|
||||
@Override |
||||
public boolean isAutoconfigure() { |
||||
return true; |
||||
} |
||||
|
||||
@Override |
||||
public String[] getClasspath() { |
||||
return new String[0]; |
||||
} |
||||
|
||||
@Override |
||||
public List<RepositoryConfiguration> getRepositoryConfiguration() { |
||||
return RepositoryConfigurationFactory.createDefaultRepositoryConfiguration(); |
||||
} |
||||
|
||||
} |
||||
|
||||
} |
||||
Loading…
Reference in new issue