Java INode.getSemanticElement方法代码示例

import org.eclipse.xtext.nodemodel.INode; //导入方法依赖的package包/类
@Override
protected void handleLastCompleteNodeIsAtEndOfDatatypeNode() {
	String prefix = getPrefix(lastCompleteNode);
	INode previousNode = getLastCompleteNodeByOffset(rootNode, lastCompleteNode.getOffset());
	EObject previousModel = previousNode.getSemanticElement();
	INode currentDatatypeNode = getContainingDatatypeRuleNode(currentNode);
	Collection<FollowElement> followElements = getParser().getFollowElements(rootNode, 0,
			lastCompleteNode.getOffset(), true);
	int prevSize = contextBuilders.size();
	doCreateContexts(previousNode, currentDatatypeNode, prefix, previousModel, followElements);

	if (lastCompleteNode instanceof ILeafNode && lastCompleteNode.getGrammarElement() == null
			&& contextBuilders.size() != prevSize) {
		handleLastCompleteNodeHasNoGrammarElement(contextBuilders.subList(prevSize, contextBuilders.size()),
				previousModel);
	}
}
 

import org.eclipse.xtext.nodemodel.INode; //导入方法依赖的package包/类
/**
 * Returns nodes which represent keywords and specified in keywords.
 *
 * @param keywords
 *            keywords in natural order used in Arrays#s
 */
protected List<ILeafNode> filterLeafsWithKeywordInsteadOfComma(EObject semanticElement, String stopAtKeyword,
		ICompositeNode node,
		final String... keywords) {
	List<ILeafNode> filteredLeaves = null;
	for (BidiTreeIterator<INode> iter = node.getAsTreeIterable().iterator(); iter.hasNext();) {
		INode child = iter.next();
		EObject childSemElement = child.getSemanticElement();
		if (child != node && childSemElement != null && childSemElement != semanticElement) {
			iter.prune();
		} else if (child instanceof ILeafNode) {
			ILeafNode leaf = (ILeafNode) child;
			EObject grammarElement = leaf.getGrammarElement();
			if (grammarElement instanceof Keyword) {
				String value = ((Keyword) grammarElement).getValue();
				if (stopAtKeyword.equals(value)) {
					break;
				}
				if (Arrays.binarySearch(keywords, value) >= 0) {
					if (grammarElement.eContainer() instanceof Alternatives) {
						AbstractElement first = ((Alternatives) (grammarElement.eContainer())).getElements().get(0);
						boolean inCommaAlternative = (first instanceof Keyword && ",".equals(((Keyword) first)
								.getValue()));
						if (inCommaAlternative) {
							if (filteredLeaves == null) {
								filteredLeaves = new ArrayList<>(5);
							}
							filteredLeaves.add(leaf);
						}
					}
				}
			}
		}
	}
	return filteredLeaves == null ? Collections.emptyList() : filteredLeaves;
}
 

import org.eclipse.xtext.nodemodel.INode; //导入方法依赖的package包/类
/**
 * Returns the first keyword with the given value, or null if no such keyword is found.
 */
private ILeafNode doFindLeafWithKeyword(EObject semanticElement, String stopAtKeyword, ICompositeNode node,
		String keyWord,
		boolean commaAlternative, int hitNumber) {
	EObject grammarElement;
	int foundHits = 0;

	for (BidiTreeIterator<INode> iter = node.getAsTreeIterable().iterator(); iter.hasNext();) {
		INode child = iter.next();
		EObject childSemElement = child.getSemanticElement();
		if (child != node && childSemElement != null && childSemElement != semanticElement) {
			iter.prune();
		} else if (child instanceof ILeafNode) {
			ILeafNode leaf = (ILeafNode) child;
			grammarElement = leaf.getGrammarElement();
			if (grammarElement instanceof Keyword) {
				String value = ((Keyword) grammarElement).getValue();
				if (stopAtKeyword.equals(value)) {
					return null;
				}
				if (keyWord.equals(value)) {
					if (grammarElement.eContainer() instanceof Alternatives) {
						AbstractElement first = ((Alternatives) (grammarElement.eContainer())).getElements().get(0);
						boolean inCommaAlternative = (first instanceof Keyword && ",".equals(((Keyword) first)
								.getValue()));
						if (inCommaAlternative == commaAlternative) {
							foundHits++;
							if (foundHits >= hitNumber) {
								return leaf;
							}
						}
					} else {
						if (!commaAlternative) {
							foundHits++;
							if (foundHits >= hitNumber) {
								return leaf;
							}
						}
					}
				}
			}
		}
	}
	return null;
}