0
我在写一个Xtext语法,它可以访问在函数之前声明的文档。Xtext语法mixin导致Guice注入错误
我们目前的语法定义hidden(ML_COMMENT, SL_COMMENT,...)
有:
ML_COMMENT: '/*' -> '*/'
SL_COMMENT: '//' -> EOL
我现在已经创建了一个第二的Xtext项目,用下面的语法:
grammar my.DocumentationGrammar with my.OriginalGrammar hidden(WS, FUNCTION_BODY, EOL, SL_COMMENT)
import "http://www.originalGrammar.my"
generate documentationGrammar "http://www.documentationGrammar.my"
/* Parser rules */
TranslationUnit:
eds+=DoxExternalDefinition*
;
DoxExternalDefinition:
def = Definition
| lib = CtrlLibUsage
| comment=ML_COMMENT
;
FunctionDefinition:
aml=AccessModifiersList ts=TypeSpecifier? f=Function '(' pl=ParameterTypeList? ')' /* cs=CompoundStatement */ // the compound statement is ignored
;
//terminal DOXYGEN_COMMENT: ML_COMMENT;
terminal FUNCTION_BODY: '{' -> '}';
我已经创建的插件的依赖,并将此到
bean = StandaloneSetup {
scanClassPath = true
platformUri = "${runtimeProject}/.."
// The following two lines can be removed, if Xbase is not used.
registerGeneratedEPackage = "org.eclipse.xtext.xbase.XbasePackage"
registerGenModelFile = "platform:/resource/org.eclipse.xtext.xbase/model/Xbase.genmodel"
// we need to register the super genmodel
registerGeneratedEPackage = "my.OriginalGrammar.OriginalGrammarPackage"
registerGenModelFile = "platform:/resource/my.OriginalGrammar/model/generated/OriginalGrammar.genmodel"
}
现在,在我的第三个插件p roject,我想以独立的方式访问这个解析器。所以,我创建了下面的解析器文件(基于这个例子:http://davehofmann.de/blog/?p=101):
import java.io.IOException;
import java.io.Reader;
import java.nio.file.Path;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.xtext.parser.IParseResult;
import org.eclipse.xtext.parser.IParser;
import org.eclipse.xtext.parser.ParseException;
import org.eclipse.xtext.resource.XtextResource;
import org.eclipse.xtext.resource.XtextResourceSet;
import my.DocumentationGrammar.DocumentationGrammarStandaloneSetup;
import com.google.inject.Inject;
import com.google.inject.Injector;
public class DoxygenParser {
@Inject
private IParser parser;
private Injector injector;
public DoxygenParser() {
setupParser();
}
private void setupParser() {
injector = new DocumentationGrammarStandaloneSetup().createInjectorAndDoEMFRegistration();
injector.injectMembers(this);
}
/**
* Parses data provided by an input reader using Xtext and returns the root node of the resulting object tree.
* @param reader Input reader
* @return root object node
* @throws IOException when errors occur during the parsing process
*/
public EObject parse(Reader reader) throws IOException
{
IParseResult result = parser.parse(reader);
if(result.hasSyntaxErrors())
{
throw new ParseException("Provided input contains syntax errors.");
}
return result.getRootASTElement();
}
}
然而,当我尝试运行它,我收到吉斯注入错误说
com.google.inject.ProvisionException: Guice provision errors:
1) Error injecting constructor, org.eclipse.emf.common.util.WrappedException: java.lang.RuntimeException: Cannot create a resource for 'classpath:/my/documentationGrammar/DocumentationGrammar.xtextbin'; a registered resource factory is needed
我知道,解析器“应该”是正确的,因为当我使用OriginalGrammarStandaloneSetup时它工作得很好。