Xtext,多文件交叉引用 [英] Xtext, multi-file Cross-reference
本文介绍了Xtext,多文件交叉引用的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我想调用另一个文件中声明的变量.文件的包含是使用交叉引用完成的.以及声明的调用.这是语法:
I want to call variables declared in another file. The include of the file is done using cross referencing. and the call of the declared too. this is the grammar:
Script:
includes+=(Include)* assignments+=(Assignment)* g=GetLog? clock=Clock? tests+=Test*
;
Assignment:
Config |Cosem ;
Include:
'INCLUDE' includedScript=[Script|STRING];
Cosem:
name=ID '=' 'COSEM' '(' classid=INT ',' version=INT ',' obis=STRING ')' ;
AttributeRef:
name=[Cosem] "." attributeRef =IDValue
;
声明是Cosem
规则.
从文档中我知道我必须在 IResourceDescription
中做一些事情,但我不知道究竟是什么
from the documentation I understand that I must do something in the IResourceDescription
but I don't know what exactly
编辑
public class MyDslQNP extends DefaultDeclarativeQualifiedNameProvider {
QualifiedName qualifiedName(Script script) {
return QualifiedName.create(script.eResource().getURI().trimFileExtension().lastSegment(), script.eResource().getURI().fileExtension());
}
}
推荐答案
您正在寻找的称为范围"xtext.它在 YourDslScopeProvider
what you are looking for is called "scoping" xtext. it is implemented in YourDslScopeProvider
这看起来像
class MyDslScopeProvider extends AbstractMyDslScopeProvider {
override getScope(EObject context, EReference reference) {
if (reference === MyDslPackage.Literals.ATTRIBUTE_REF__NAME) {
// we are scoping the AttributeRef.name cross reference
val script = EcoreUtil2.getContainerOfType(context, Script)
if (script !== null) {
val allImportedCosems = script.includes.map[includedScript.assignments.filter(Cosem)].flatten
// put the imported cosems into scope
return Scopes.scopeFor(allImportedCosems)
}
}
super.getScope(context, reference)
}
}
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