使用 ant 构建 xtext 项目时出错：语法类的生成失败

Question

我正在为我的学士论文开发一个 Eclipse 应用程序的 xtext 插件项目。

我想在运行时使用执行 Mwe2Launcher 类的 ant 脚本执行“生成 Xtext Artifacts”，并在临时文件夹中进行生成。

我写了一个 Activator 在 temp 文件夹中创建一个项目文件夹并复制 mwe2 文件、我的语法文件和 ant 脚本。

执行 Ant 脚本会导致这个错误：

osgi> start 360
gen:
 [java] 0    INFO  StandaloneSetup    - Registering platform uri 'C:\Foo-test'
 [java] 2461 INFO  DirectoryCleaner   - Cleaning C:\Foo-test\org.xtext.example.foobar\..\org.xtext.example.foobar\src-gen
 [java] 2503 INFO  DirectoryCleaner   - Cleaning C:\Foo-test\org.xtext.example.foobar\..\org.xtext.example.foobar.ui\src-gen
 [java] 3056 INFO  LanguageConfig     - generating infrastructure for org.xtext.example.foobar.Foo with fragments : ImplicitRuntimeFragment, ImplicitUiFragment, GrammarAccessFragment, EcoreGeneratorFragment, ParseTreeConstructorFragment, ResourceFactoryFragment, XtextAntlrGeneratorFragment, JavaValidatorFragment, ImportNamespacesScopingFragment, QualifiedNamesFragment, BuilderIntegrationFragment, GeneratorFragment, FormatterFragment, LabelProviderFragment, OutlineTreeProviderFragment, QuickOutlineFragment, QuickfixProviderFragment, JavaBasedContentAssistFragment, XtextAntlrUiGeneratorFragment, TypesGeneratorFragment, XbaseGeneratorFragment, CodetemplatesGeneratorFragment
 [java] 6253 INFO  GenModelHelper     - Registered GenModel 'http://www.xtext.org/example/foobar/Foo' from 'file:/C:/Foo-test/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/Foo.genmodel'
 [java] org.eclipse.emf.common.util.WrappedException: java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/FooPackage.java' is unmapped
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generateJava(AbstractGeneratorAdapter.java:1112)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenPackageGeneratorAdapter.generatePackageInterface(GenPackageGeneratorAdapter.java:467)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenPackageGeneratorAdapter.generateModel(GenPackageGeneratorAdapter.java:219)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenBaseGeneratorAdapter.doGenerate(GenBaseGeneratorAdapter.java:221)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generate(AbstractGeneratorAdapter.java:290)
 [java]     at org.eclipse.emf.codegen.ecore.generator.Generator.generate(Generator.java:617)
 [java]     at org.eclipse.emf.codegen.ecore.generator.Generator.generate(Generator.java:528)
 [java]     at org.eclipse.xtext.generator.ecore.EcoreGeneratorFragment.doGenerate(EcoreGeneratorFragment.java:144)
 [java]     at org.eclipse.xtext.generator.ecore.EcoreGeneratorFragment.generate(EcoreGeneratorFragment.java:211)
 [java]     at org.eclipse.xtext.generator.CompositeGeneratorFragment.generate(CompositeGeneratorFragment.java:81)
 [java]     at org.eclipse.xtext.generator.LanguageConfig.generate(LanguageConfig.java:108)
 [java]     at org.eclipse.xtext.generator.Generator.generate(Generator.java:352)
 [java]     at org.eclipse.xtext.generator.Generator.invokeInternal(Generator.java:126)
 [java]     at org.eclipse.emf.mwe.core.lib.AbstractWorkflowComponent.invoke(AbstractWorkflowComponent.java:126)
 [java]     at org.eclipse.emf.mwe.core.lib.Mwe2Bridge.invoke(Mwe2Bridge.java:34)
 [java]     at org.eclipse.emf.mwe.core.lib.AbstractWorkflowComponent.invoke(AbstractWorkflowComponent.java:201)
 [java]     at org.eclipse.emf.mwe2.runtime.workflow.AbstractCompositeWorkflowComponent.invoke(AbstractCompositeWorkflowComponent.java:35)
 [java]     at org.eclipse.emf.mwe2.runtime.workflow.Workflow.run(Workflow.java:19)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:97)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:73)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.run(Mwe2Launcher.java:76)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.main(Mwe2Launcher.java:35)
 [java] Caused by: java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/FooPackage.java' is unmapped
 [java]     at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.createOutputStream(PlatformResourceURIHandlerImpl.java:428)
 [java]     at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.createOutputStream(ExtensibleURIConverterImpl.java:339)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.createOutputStream(AbstractGeneratorAdapter.java:1440)
 [java]     at org.eclipse.emf.mwe2.ecore.CvsIdFilteringGeneratorAdapterFactoryDescriptor$IdFilteringGenModelGeneratorAdapterFactory$IdFilteringGenPackageAdapter.createOutputStream(CvsIdFilteringGeneratorAdapterFactoryDescriptor.java:39)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generateJava(AbstractGeneratorAdapter.java:1104)
 [java]     ... 21 more
 [java] org.eclipse.emf.common.util.WrappedException: java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Model.java' is unmapped
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generateJava(AbstractGeneratorAdapter.java:1112)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenClassGeneratorAdapter.generateInterface(GenClassGeneratorAdapter.java:123)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenClassGeneratorAdapter.generateModel(GenClassGeneratorAdapter.java:106)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenBaseGeneratorAdapter.doGenerate(GenBaseGeneratorAdapter.java:221)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generate(AbstractGeneratorAdapter.java:290)
 [java]     at org.eclipse.emf.codegen.ecore.generator.Generator.generate(Generator.java:617)
 [java]     at org.eclipse.emf.codegen.ecore.generator.Generator.generate(Generator.java:528)
 [java]     at org.eclipse.xtext.generator.ecore.EcoreGeneratorFragment.doGenerate(EcoreGeneratorFragment.java:144)
 [java]     at org.eclipse.xtext.generator.ecore.EcoreGeneratorFragment.generate(EcoreGeneratorFragment.java:211)
 [java]     at org.eclipse.xtext.generator.CompositeGeneratorFragment.generate(CompositeGeneratorFragment.java:81)
 [java]     at org.eclipse.xtext.generator.LanguageConfig.generate(LanguageConfig.java:108)
 [java]     at org.eclipse.xtext.generator.Generator.generate(Generator.java:352)
 [java]     at org.eclipse.xtext.generator.Generator.invokeInternal(Generator.java:126)
 [java]     at org.eclipse.emf.mwe.core.lib.AbstractWorkflowComponent.invoke(AbstractWorkflowComponent.java:126)
 [java]     at org.eclipse.emf.mwe.core.lib.Mwe2Bridge.invoke(Mwe2Bridge.java:34)
 [java]     at org.eclipse.emf.mwe.core.lib.AbstractWorkflowComponent.invoke(AbstractWorkflowComponent.java:201)
 [java]     at org.eclipse.emf.mwe2.runtime.workflow.AbstractCompositeWorkflowComponent.invoke(AbstractCompositeWorkflowComponent.java:35)
 [java]     at org.eclipse.emf.mwe2.runtime.workflow.Workflow.run(Workflow.java:19)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:97)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:73)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.run(Mwe2Launcher.java:76)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.main(Mwe2Launcher.java:35)
 [java] Caused by: java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Model.java' is unmapped
 [java]     at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.createOutputStream(PlatformResourceURIHandlerImpl.java:428)
 [java]     at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.createOutputStream(ExtensibleURIConverterImpl.java:339)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.createOutputStream(AbstractGeneratorAdapter.java:1440)
 [java]     at org.eclipse.emf.mwe2.ecore.CvsIdFilteringGeneratorAdapterFactoryDescriptor$IdFilteringGenModelGeneratorAdapterFactory$IdFilteringGenClassAdapter.createOutputStream(CvsIdFilteringGeneratorAdapterFactoryDescriptor.java:73)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generateJava(AbstractGeneratorAdapter.java:1104)
 [java]     ... 21 more
 [java] org.eclipse.emf.common.util.WrappedException: java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Greeting.java' is unmapped
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generateJava(AbstractGeneratorAdapter.java:1112)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenClassGeneratorAdapter.generateInterface(GenClassGeneratorAdapter.java:123)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenClassGeneratorAdapter.generateModel(GenClassGeneratorAdapter.java:106)
 [java]     at org.eclipse.emf.codegen.ecore.genmodel.generator.GenBaseGeneratorAdapter.doGenerate(GenBaseGeneratorAdapter.java:221)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generate(AbstractGeneratorAdapter.java:290)
 [java]     at org.eclipse.emf.codegen.ecore.generator.Generator.generate(Generator.java:617)
 [java]     at org.eclipse.emf.codegen.ecore.generator.Generator.generate(Generator.java:528)
 [java]     at org.eclipse.xtext.generator.ecore.EcoreGeneratorFragment.doGenerate(EcoreGeneratorFragment.java:144)
 [java]     at org.eclipse.xtext.generator.ecore.EcoreGeneratorFragment.generate(EcoreGeneratorFragment.java:211)
 [java]     at org.eclipse.xtext.generator.CompositeGeneratorFragment.generate(CompositeGeneratorFragment.java:81)
 [java]     at org.eclipse.xtext.generator.LanguageConfig.generate(LanguageConfig.java:108)
 [java]     at org.eclipse.xtext.generator.Generator.generate(Generator.java:352)
 [java]     at org.eclipse.xtext.generator.Generator.invokeInternal(Generator.java:126)
 [java]     at org.eclipse.emf.mwe.core.lib.AbstractWorkflowComponent.invoke(AbstractWorkflowComponent.java:126)
 [java]     at org.eclipse.emf.mwe.core.lib.Mwe2Bridge.invoke(Mwe2Bridge.java:34)
 [java]     at org.eclipse.emf.mwe.core.lib.AbstractWorkflowComponent.invoke(AbstractWorkflowComponent.java:201)
 [java]     at org.eclipse.emf.mwe2.runtime.workflow.AbstractCompositeWorkflowComponent.invoke(AbstractCompositeWorkflowComponent.java:35)
 [java]     at org.eclipse.emf.mwe2.runtime.workflow.Workflow.run(Workflow.java:19)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:97)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:73)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.run(Mwe2Launcher.java:76)
 [java]     at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.main(Mwe2Launcher.java:35)
 [java] Caused by: java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Greeting.java' is unmapped
 [java]     at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.createOutputStream(PlatformResourceURIHandlerImpl.java:428)
 [java]     at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.createOutputStream(ExtensibleURIConverterImpl.java:339)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.createOutputStream(AbstractGeneratorAdapter.java:1440)
 [java]     at org.eclipse.emf.mwe2.ecore.CvsIdFilteringGeneratorAdapterFactoryDescriptor$IdFilteringGenModelGeneratorAdapterFactory$IdFilteringGenClassAdapter.createOutputStream(CvsIdFilteringGeneratorAdapterFactoryDescriptor.java:73)
 [java]     at org.eclipse.emf.codegen.ecore.generator.AbstractGeneratorAdapter.generateJava(AbstractGeneratorAdapter.java:1104)
 [java]     ... 21 more
 [java] 6768 INFO  EcoreGeneratorFragment - Diagnostic ERROR source=org.eclipse.emf.codegen.ecore code=0 Generating code data=[] [Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic ERROR source=org.eclipse.emf.codegen.ecore code=0 Generating Java interface org.xtext.example.foobar.foo.FooPackage failed with an unhandled exception data=[] [Diagnostic ERROR source=org.eclipse.emf.common code=0 IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/FooPackage.java' is unmapped data=[java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/FooPackage.java' is unmapped]], Diagnostic ERROR source=org.eclipse.emf.codegen.ecore code=0 Generating Java interface org.xtext.example.foobar.foo.Model failed with an unhandled exception data=[] [Diagnostic ERROR source=org.eclipse.emf.common code=0 IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Model.java' is unmapped data=[java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Model.java' is unmapped]], Diagnostic ERROR source=org.eclipse.emf.codegen.ecore code=0 Generating Java interface org.xtext.example.foobar.foo.Greeting failed with an unhandled exception data=[] [Diagnostic ERROR source=org.eclipse.emf.common code=0 IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Greeting.java' is unmapped data=[java.io.IOException: The path '/org.xtext.example.foobar/src-gen/org/xtext/example/foobar/foo/Greeting.java' is unmapped]], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[], Diagnostic OK source=org.eclipse.emf.common code=0 OK data=[]]
 [java] 10385 INFO  JavaValidatorFragment - generating Java-based EValidator API
 [java] 13246 INFO  Workflow           - Done. BUILD SUCCESSFUL Total time: 27 seconds

未映射的“.java”文件也没有生成。整个“/src-gen/...../foobar/foo”文件夹不见了。

我想这就是原因，应该解决什么问题。

我真的不知道，问题出在哪里。我已经在Eclipse forum 中进行过讨论，您可以在那里找到 build.xml，但对于另一个项目，还有一个 Activator 类来激活插件并执行复制内容并执行 ant 脚本，您还可以找到我使用的 mwe2 文件.

Answer 1

您必须确保在工作流程中将您的临时文件夹注册为平台 URI。 Xtext 使用 EMF 的 platform:/resource URI 方案。因此，必须注册平台根以根据平台路径定义从文件系统上的绝对位置到逻辑位置的路径映射。您也可以尝试复制 .project 文件。如果您已经将临时文件夹注册为平台路径，我认为这会有所帮助。