Examples with JavaContextType org.eclipse.jdt.ls.core.internal.corext.template.java.JavaContextType used on opensource projects

Example 1 with JavaContextType

use of org.eclipse.jdt.ls.core.internal.corext.template.java.JavaContextType in project eclipse.jdt.ls by eclipse.

the class SnippetCompletionProposal method evaluateGenericTemplate.

public static String evaluateGenericTemplate(ICompilationUnit cu, CompletionContext completionContext, Template template) {
    JavaContextType contextType = (JavaContextType) JavaLanguageServerPlugin.getInstance().getTemplateContextRegistry().getContextType(JavaContextType.ID_STATEMENTS);
    char[] completionToken = completionContext.getToken();
    if (contextType == null || completionToken == null) {
        return null;
    }
    TemplateBuffer buffer = null;
    try {
        IDocument document = new Document(cu.getSource());
        DocumentTemplateContext javaContext = contextType.createContext(document, completionContext.getOffset(), completionToken.length, cu);
        buffer = javaContext.evaluate(template);
    } catch (JavaModelException | BadLocationException | TemplateException e) {
        JavaLanguageServerPlugin.logException(e.getMessage(), e);
        return null;
    }
    if (buffer == null) {
        return null;
    }
    String content = buffer.getString();
    if (Strings.containsOnlyWhitespaces(content)) {
        return null;
    }
    return content;
}

Example 2 with JavaContextType

use of org.eclipse.jdt.ls.core.internal.corext.template.java.JavaContextType in project eclipse.jdt.ls by eclipse.

the class JavaLanguageServerPlugin method getTemplateContextRegistry.

/**
 * Returns the template context type registry for the java plug-in.
 *
 * @return the template context type registry for the java plug-in
 */
public synchronized ContextTypeRegistry getTemplateContextRegistry() {
    if (fContextTypeRegistry == null) {
        ContextTypeRegistry registry = new ContextTypeRegistry();
        JavaContextType statementContextType = new JavaContextType();
        statementContextType.setId(JavaContextType.ID_STATEMENTS);
        statementContextType.setName(JavaContextType.ID_STATEMENTS);
        statementContextType.initializeContextTypeResolvers();
        // Todo: Some of the resolvers is defined in the XML of the jdt.ui, now we have to add them manually.
        // See: https://github.com/eclipse/eclipse.jdt.ui/blob/cf6c42522ee5a5ea21a34fcfdecf3504d4750a04/org.eclipse.jdt.ui/plugin.xml#L5619-L5625
        TemplateVariableResolver resolver = new VarResolver();
        resolver.setType("var");
        statementContextType.addResolver(resolver);
        registry.addContextType(statementContextType);
        fContextTypeRegistry = registry;
    }
    return fContextTypeRegistry;
}

Example 3 with JavaContextType

use of org.eclipse.jdt.ls.core.internal.corext.template.java.JavaContextType in project eclipse.jdt.ls by eclipse.

the class SnippetCompletionProposal method getGenericSnippets.

private static List<CompletionItem> getGenericSnippets(SnippetCompletionContext scc) throws JavaModelException {
    CompletionResponse response = new CompletionResponse();
    response.setContext(scc.getCompletionContext());
    response.setOffset(scc.getCompletionContext().getOffset());
    List<CompletionItem> res = new ArrayList<>();
    CompletionContext completionContext = scc.getCompletionContext();
    char[] completionToken = completionContext.getToken();
    if (completionToken == null) {
        return Collections.emptyList();
    }
    int tokenLocation = completionContext.getTokenLocation();
    JavaContextType contextType = (JavaContextType) JavaLanguageServerPlugin.getInstance().getTemplateContextRegistry().getContextType(JavaContextType.ID_STATEMENTS);
    if (contextType == null) {
        return Collections.emptyList();
    }
    ICompilationUnit cu = scc.getCompilationUnit();
    IDocument document = new Document(cu.getSource());
    DocumentTemplateContext javaContext = contextType.createContext(document, completionContext.getOffset(), completionToken.length, cu);
    Template[] templates = null;
    if ((tokenLocation & CompletionContext.TL_STATEMENT_START) != 0) {
        templates = JavaLanguageServerPlugin.getInstance().getTemplateStore().getTemplates(JavaContextType.ID_STATEMENTS);
    } else {
    // We only support statement templates for now.
    }
    if (templates == null || templates.length == 0) {
        return Collections.emptyList();
    }
    String uri = JDTUtils.toURI(cu);
    Template[] availableTemplates = Arrays.stream(templates).filter(t -> javaContext.canEvaluate(t)).toArray(Template[]::new);
    List<CompletionProposal> proposals = new ArrayList<>();
    for (int i = 0; i < availableTemplates.length; i++) {
        Template template = availableTemplates[i];
        final CompletionItem item = new CompletionItem();
        item.setLabel(template.getName());
        item.setKind(CompletionItemKind.Snippet);
        item.setInsertTextFormat(InsertTextFormat.Snippet);
        item.setInsertText(SnippetUtils.templateToSnippet(template.getPattern()));
        item.setDetail(template.getDescription());
        Map<String, String> data = new HashMap<>(3);
        data.put(CompletionResolveHandler.DATA_FIELD_URI, uri);
        data.put(CompletionResolveHandler.DATA_FIELD_REQUEST_ID, String.valueOf(response.getId()));
        data.put(CompletionResolveHandler.DATA_FIELD_PROPOSAL_ID, String.valueOf(i));
        item.setData(data);
        proposals.add(i, new SnippetCompletionProposal(template));
        res.add(item);
    }
    response.setProposals(proposals);
    CompletionResponses.store(response);
    return res;
}