Function setupSignatureHelp

packages/monaco/src/lsp.ts:205–246

(
    documentUri: string,
    languageId: string,
    connection: ProtocolConnection,
    initResponse: InitializeResult<any>
)

}

function setupSignatureHelp(
    documentUri: string,
    languageId: string,
    connection: ProtocolConnection,
    initResponse: InitializeResult<any>
) {
    if (!initResponse.capabilities.signatureHelpProvider) {
        return;
    }

    // TODO: registration is global, this will break with multiple editors
    monaco.languages.registerSignatureHelpProvider(languageId, {
        async provideSignatureHelp(_, position, token, context) {
            const params: SignatureHelpParams = {
                position: {
                    character: position.column - 1,
                    line: position.lineNumber - 1
                },
                textDocument: {
                    uri: documentUri
                },
                context: {
                    isRetrigger: context.isRetrigger,
                    triggerKind: monacoToLspSignatureHelpTriggerKind(context.triggerKind),
                    activeSignatureHelp: context.activeSignatureHelp
                        ? monacoToLspSignatureHelp(context.activeSignatureHelp)
                        : undefined,
                    triggerCharacter: context.triggerCharacter
                }
            };

            const response = await connection.sendRequest(SignatureHelpRequest.type, params, token);
            if (response === null) {
                return null;
            }

            return lspToMonacoSignatureHelp(response);
        },
        signatureHelpRetriggerCharacters: initResponse.capabilities.signatureHelpProvider!.retriggerCharacters,
        signatureHelpTriggerCharacters: initResponse.capabilities.signatureHelpProvider!.triggerCharacters
    });
}
function setupCompletion(
    documentUri: string,
    languageId: string,