Examples with ParameterInformation org.graalvm.tools.lsp.server.types.ParameterInformation used on opensource projects

Example 1 with ParameterInformation

use of org.graalvm.tools.lsp.server.types.ParameterInformation in project graal by oracle.

the class SignatureHelpRequestHandler method signatureHelpWithEnteredContext.

public SignatureHelp signatureHelpWithEnteredContext(URI uri, int line, int originalCharacter) throws DiagnosticsNotification {
    TextDocumentSurrogate surrogate = surrogateMap.get(uri);
    if (isSignatureHelpTriggerCharOfLanguage(surrogate, line, originalCharacter)) {
        InstrumentableNode nodeAtCaret = findNodeAtCaret(surrogate, line, originalCharacter, StandardTags.CallTag.class);
        if (nodeAtCaret != null) {
            SourceSection signatureSection = ((Node) nodeAtCaret).getSourceSection();
            SourceSectionFilter.Builder builder = SourceCodeEvaluator.createSourceSectionFilter(surrogate.getUri(), signatureSection);
            SourceSectionFilter eventFilter = builder.tagIs(StandardTags.CallTag.class).build();
            SourceSectionFilter inputFilter = SourceSectionFilter.ANY;
            EvaluationResult evalResult = sourceCodeEvaluator.runToSectionAndEval(surrogate, signatureSection, eventFilter, inputFilter);
            // TODO: Are we asking for the signature on the correct object?
            if (evalResult.isEvaluationDone() && !evalResult.isError()) {
                Object result = evalResult.getResult();
                if (INTEROP.accepts(result) && INTEROP.isExecutable(result)) {
                    try {
                        Object signature = LSP_INTEROP.getSignature(result);
                        LanguageInfo langInfo = surrogate.getLanguageInfo();
                        String label = INTEROP.asString(INTEROP.toDisplayString(env.getLanguageView(langInfo, signature)));
                        SignatureInformation info = SignatureInformation.create(label, null);
                        if (signature instanceof TruffleObject) {
                            if (INTEROP.isMemberReadable(signature, PROP_DOCUMENTATION)) {
                                Object doc = INTEROP.readMember(signature, PROP_DOCUMENTATION);
                                Object documentation = completionHandler.getDocumentation(doc, langInfo);
                                if (documentation != null) {
                                    info.setDocumentation(documentation);
                                }
                            }
                            if (INTEROP.isMemberReadable(signature, PROP_PARAMETERS)) {
                                Object paramsObject = INTEROP.readMember(signature, PROP_PARAMETERS);
                                if (paramsObject instanceof TruffleObject && INTEROP.hasArrayElements(paramsObject)) {
                                    long size = INTEROP.getArraySize(paramsObject);
                                    List<ParameterInformation> paramInfos = new ArrayList<>((int) size);
                                    for (long i = 0; i < size; i++) {
                                        if (!INTEROP.isArrayElementReadable(paramsObject, i)) {
                                            continue;
                                        }
                                        Object param = INTEROP.readArrayElement(paramsObject, i);
                                        if (param instanceof TruffleObject) {
                                            ParameterInformation paramInfo = getParameterInformation(param, label, langInfo);
                                            if (paramInfo != null) {
                                                paramInfos.add(paramInfo);
                                            }
                                        }
                                    }
                                    info.setParameters(paramInfos);
                                }
                            }
                        }
                        Object nodeObject = nodeAtCaret.getNodeObject();
                        Integer numberOfArguments = InteropUtils.getNumberOfArguments(nodeObject, logger);
                        // parameter
                        return SignatureHelp.create(Arrays.asList(info), 0, numberOfArguments != null ? numberOfArguments - 1 : 0);
                    } catch (UnsupportedMessageException e) {
                        logger.log(Level.FINEST, "GET_SIGNATURE message not supported for TruffleObject: {0}", result);
                    } catch (InteropException e) {
                        e.printStackTrace(err);
                    }
                }
            }
        }
    }
    return SignatureHelp.create(Collections.emptyList(), null, null);
}

Example 2 with ParameterInformation

use of org.graalvm.tools.lsp.server.types.ParameterInformation in project graal by oracle.

the class SignatureHelpRequestHandler method getParameterInformation.

private ParameterInformation getParameterInformation(Object param, String label, LanguageInfo langInfo) throws UnsupportedMessageException, UnknownIdentifierException, InvalidArrayIndexException {
    Object paramLabelObject = INTEROP.isMemberReadable(param, PROP_LABEL) ? INTEROP.readMember(param, PROP_LABEL) : null;
    String paramLabel;
    if (paramLabelObject instanceof String) {
        paramLabel = (String) paramLabelObject;
    } else if (paramLabelObject instanceof TruffleObject && INTEROP.hasArrayElements(paramLabelObject)) {
        long size = INTEROP.getArraySize(paramLabelObject);
        if (size < 2) {
            logger.fine("ERROR: Insufficient number of label indexes: " + size + " from " + paramLabelObject);
            return null;
        }
        Object i1Obj = INTEROP.readArrayElement(paramLabelObject, 0);
        Object i2Obj = INTEROP.readArrayElement(paramLabelObject, 1);
        if (!INTEROP.fitsInInt(i1Obj) || !INTEROP.fitsInInt(i2Obj)) {
            logger.fine("ERROR: Label indexes of " + paramLabelObject + " are not numbers: " + i1Obj + ", " + i2Obj);
            return null;
        }
        paramLabel = label.substring(INTEROP.asInt(i1Obj), INTEROP.asInt(i2Obj));
    } else {
        logger.fine("ERROR: Unknown label object: " + paramLabelObject + " in " + param);
        return null;
    }
    ParameterInformation info = ParameterInformation.create(paramLabel, null);
    Object doc = INTEROP.isMemberReadable(param, PROP_DOCUMENTATION) ? INTEROP.readMember(param, PROP_DOCUMENTATION) : null;
    Object documentation = completionHandler.getDocumentation(doc, langInfo);
    if (documentation != null) {
        info.setDocumentation(documentation);
    }
    return info;
}