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Merge pull request #2 from cyrilvrousos-tas/22-provide-language-serve…
…r-protocol 22 provide language server protocol
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53 changes: 53 additions & 0 deletions
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org.eclipse.xsmp.ide/src/org/eclipse/xsmp/ide/hover/XsmpcatHoverService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| /******************************************************************************* | ||
| * Copyright (C) 2023 THALES ALENIA SPACE FRANCE. | ||
| * | ||
| * All rights reserved. This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Public License 2.0 | ||
| * which accompanies this distribution, and is available at | ||
| * https://www.eclipse.org/legal/epl-2.0/ | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| ******************************************************************************/ | ||
| package org.eclipse.xsmp.ide.hover; | ||
|
|
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| import org.eclipse.emf.ecore.EObject; | ||
| import org.eclipse.xtext.Keyword; | ||
| import org.eclipse.xtext.ide.server.Document; | ||
| import org.eclipse.xtext.ide.server.hover.HoverContext; | ||
| import org.eclipse.xtext.ide.server.hover.HoverService; | ||
| import org.eclipse.xtext.resource.XtextResource; | ||
|
|
||
| import com.google.inject.Inject; | ||
|
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| public class XsmpcatHoverService extends HoverService | ||
| { | ||
| @Inject | ||
| private XsmpcatKeywordHovers keywordHovers; | ||
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|
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| @Inject | ||
| private XsmpcatKeywordAtOffsetHelper keywordHelper; | ||
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| @Override | ||
| public String getContents(EObject element) | ||
| { | ||
| if (element instanceof Keyword) | ||
| { | ||
| return keywordHovers.hoverText((Keyword) element); | ||
| } | ||
| return super.getContents(element); | ||
| } | ||
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| @Override | ||
| protected HoverContext createContext(Document document, XtextResource resource, int offset) | ||
| { | ||
| // Looking for a keyword | ||
| final var result = keywordHelper.resolveKeywordAt(resource, offset); | ||
| if (result != null) | ||
| { | ||
| return new HoverContext(document, resource, offset, result.getSecond(), result.getFirst()); | ||
| } | ||
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| return super.createContext(document, resource, offset); | ||
| } | ||
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|
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| } |
43 changes: 43 additions & 0 deletions
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org.eclipse.xsmp.ide/src/org/eclipse/xsmp/ide/hover/XsmpcatKeywordAtOffsetHelper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| /******************************************************************************* | ||
| * Copyright (C) 2023 THALES ALENIA SPACE FRANCE. | ||
| * | ||
| * All rights reserved. This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Public License 2.0 | ||
| * which accompanies this distribution, and is available at | ||
| * https://www.eclipse.org/legal/epl-2.0/ | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| ******************************************************************************/ | ||
| package org.eclipse.xsmp.ide.hover; | ||
|
|
||
| import org.eclipse.emf.ecore.EObject; | ||
| import org.eclipse.xtext.Keyword; | ||
| import org.eclipse.xtext.nodemodel.util.NodeModelUtils; | ||
| import org.eclipse.xtext.resource.XtextResource; | ||
| import org.eclipse.xtext.util.ITextRegion; | ||
| import org.eclipse.xtext.util.Pair; | ||
| import org.eclipse.xtext.util.TextRegion; | ||
| import org.eclipse.xtext.util.Tuples; | ||
|
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| public class XsmpcatKeywordAtOffsetHelper | ||
| { | ||
| public Pair<EObject, ITextRegion> resolveKeywordAt(XtextResource resource, int offset) | ||
| { | ||
| final var parseResult = resource.getParseResult(); | ||
| if (parseResult != null) | ||
| { | ||
| var leaf = NodeModelUtils.findLeafNodeAtOffset(parseResult.getRootNode(), offset); | ||
| if (leaf != null && leaf.isHidden() && leaf.getOffset() == offset) | ||
| { | ||
| leaf = NodeModelUtils.findLeafNodeAtOffset(parseResult.getRootNode(), offset - 1); | ||
| } | ||
| if (leaf != null && leaf.getGrammarElement() instanceof Keyword) | ||
| { | ||
| final var keyword = (Keyword) leaf.getGrammarElement(); | ||
| return Tuples.create((EObject) keyword, | ||
| (ITextRegion) new TextRegion(leaf.getOffset(), leaf.getLength())); | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
| } |
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